--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/graphics/GC.d	Fri Mar 20 23:03:58 2009 +0100
@@ -0,0 +1,4021 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2008 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module org.eclipse.swt.graphics.GC;
+
+import org.eclipse.swt.graphics.Image;
+
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.SWTException;
+import org.eclipse.swt.SWTError;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.Drawable;
+import org.eclipse.swt.graphics.Resource;
+import org.eclipse.swt.graphics.Device;
+import org.eclipse.swt.graphics.Font;
+import org.eclipse.swt.graphics.FontMetrics;
+import org.eclipse.swt.graphics.GCData;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.ImageData;
+import org.eclipse.swt.graphics.Path;
+import org.eclipse.swt.graphics.Pattern;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.RGB;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.graphics.Region;
+import org.eclipse.swt.graphics.Resource;
+import org.eclipse.swt.graphics.Transform;
+import org.eclipse.swt.graphics.LineAttributes;
+
+import org.eclipse.swt.internal.gtk.OS;
+import org.eclipse.swt.internal.cairo.Cairo;
+import org.eclipse.swt.internal.Converter;
+import org.eclipse.swt.internal.Compatibility;
+import java.lang.all;
+
+import tango.text.convert.Format;
+import tango.stdc.string;
+
+
+/**
+ * Class <code>GC</code> is where all of the drawing capabilities that are
+ * supported by SWT are located. Instances are used to draw on either an
+ * <code>Image</code>, a <code>Control</code>, or directly on a <code>Display</code>.
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>LEFT_TO_RIGHT, RIGHT_TO_LEFT</dd>
+ * </dl>
+ *
+ * <p>
+ * The SWT drawing coordinate system is the two-dimensional space with the origin
+ * (0,0) at the top left corner of the drawing area and with (x,y) values increasing
+ * to the right and downward respectively.
+ * </p>
+ *
+ * <p>
+ * Application code must explicitly invoke the <code>GC.dispose()</code>
+ * method to release the operating system resources managed by each instance
+ * when those instances are no longer required. This is <em>particularly</em>
+ * important on Windows95 and Windows98 where the operating system has a limited
+ * number of device contexts available.
+ * </p>
+ *
+ * <p>
+ * Note: Only one of LEFT_TO_RIGHT and RIGHT_TO_LEFT may be specified.
+ * </p>
+ *
+ * @see org.eclipse.swt.events.PaintEvent
+ * @see <a href="http://www.eclipse.org/swt/snippets/#gc">GC snippets</a>
+ * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Examples: GraphicsExample, PaintExample</a>
+ * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
+ */
+public final class GC : Resource {
+
+    alias Resource.init_ init_;
+
+    /**
+     * the handle to the OS device context
+     * (Warning: This field is platform dependent)
+     * <p>
+     * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT
+     * public API. It is marked public only so that it can be shared
+     * within the packages provided by SWT. It is not available on all
+     * platforms and should never be accessed from application code.
+     * </p>
+     */
+    public GdkGC* handle;
+
+    Drawable drawable;
+    GCData data;
+
+    const static int FOREGROUND = 1 << 0;
+    const static int BACKGROUND = 1 << 1;
+    const static int FONT = 1 << 2;
+    const static int LINE_STYLE = 1 << 3;
+    const static int LINE_CAP = 1 << 4;
+    const static int LINE_JOIN = 1 << 5;
+    const static int LINE_WIDTH = 1 << 6;
+    const static int LINE_MITERLIMIT = 1 << 7;
+    const static int BACKGROUND_BG = 1 << 8;
+    const static int DRAW_OFFSET = 1 << 9;
+    const static int DRAW = FOREGROUND | LINE_WIDTH | LINE_STYLE  | LINE_CAP  | LINE_JOIN | LINE_MITERLIMIT | DRAW_OFFSET;
+    const static int FILL = BACKGROUND;
+
+    static const float[] LINE_DOT = [1, 1];
+    static const float[] LINE_DASH = [3, 1];
+    static const float[] LINE_DASHDOT = [3, 1, 1, 1];
+    static const float[] LINE_DASHDOTDOT = [3, 1, 1, 1, 1, 1];
+    static const float[] LINE_DOT_ZERO = [3, 3];
+    static const float[] LINE_DASH_ZERO = [18, 6];
+    static const float[] LINE_DASHDOT_ZERO = [9, 6, 3, 6];
+    static const float[] LINE_DASHDOTDOT_ZERO = [9, 3, 3, 3, 3, 3];
+
+this() {
+}
+
+/**
+ * Constructs a new instance of this class which has been
+ * configured to draw on the specified drawable. Sets the
+ * foreground color, background color and font in the GC
+ * to match those in the drawable.
+ * <p>
+ * You must dispose the graphics context when it is no longer required.
+ * </p>
+ * @param drawable the drawable to draw on
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the drawable is null</li>
+ *    <li>ERROR_NULL_ARGUMENT - if there is no current device</li>
+ *    <li>ERROR_INVALID_ARGUMENT
+ *          - if the drawable is an image that is not a bitmap or an icon
+ *          - if the drawable is an image or printer that is already selected
+ *            into another graphics context</li>
+ * </ul>
+ * @exception SWTError <ul>
+ *    <li>ERROR_NO_HANDLES if a handle could not be obtained for GC creation</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li>
+ * </ul>
+ */
+public this(Drawable drawable) {
+    this(drawable, 0);
+}
+
+/**
+ * Constructs a new instance of this class which has been
+ * configured to draw on the specified drawable. Sets the
+ * foreground color, background color and font in the GC
+ * to match those in the drawable.
+ * <p>
+ * You must dispose the graphics context when it is no longer required.
+ * </p>
+ *
+ * @param drawable the drawable to draw on
+ * @param style the style of GC to construct
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the drawable is null</li>
+ *    <li>ERROR_NULL_ARGUMENT - if there is no current device</li>
+ *    <li>ERROR_INVALID_ARGUMENT
+ *          - if the drawable is an image that is not a bitmap or an icon
+ *          - if the drawable is an image or printer that is already selected
+ *            into another graphics context</li>
+ * </ul>
+ * @exception SWTError <ul>
+ *    <li>ERROR_NO_HANDLES if a handle could not be obtained for GC creation</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+public this(Drawable drawable, int style) {
+    if (drawable is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    GCData data = new GCData();
+    data.style = checkStyle(style);
+    auto gdkGC = drawable.internal_new_GC(data);
+    Device device = data.device;
+    if (device is null) device = Device.getDevice();
+    if (device is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    this.device = data.device = device;
+    init_(drawable, data, gdkGC);
+    init_();
+}
+
+static void addCairoString(cairo_t* cairo, String str, float x, float y, Font font) {
+    char* buffer = toStringz( str );
+    if (OS.GTK_VERSION >= OS.buildVERSION(2, 8, 0)) {
+        auto layout = OS.pango_cairo_create_layout(cairo);
+        if (layout is null) SWT.error(SWT.ERROR_NO_HANDLES);
+        OS.pango_layout_set_text(layout, buffer, -1);
+        OS.pango_layout_set_font_description(layout, font.handle);
+        double currentX, currentY;
+        Cairo.cairo_get_current_point(cairo, &currentX, &currentY);
+        if (currentX !is x || currentY !is y) {
+            Cairo.cairo_move_to(cairo, x, y);
+        }
+        OS.pango_cairo_layout_path(cairo, layout);
+        OS.g_object_unref(layout);
+    } else {
+        GC.setCairoFont(cairo, font);
+        cairo_font_extents_t* extents = new cairo_font_extents_t();
+        Cairo.cairo_font_extents(cairo, extents);
+        double baseline = y + extents.ascent;
+        Cairo.cairo_move_to(cairo, x, baseline);
+        Cairo.cairo_text_path(cairo, buffer);
+    }
+}
+
+static int checkStyle (int style) {
+    if ((style & SWT.LEFT_TO_RIGHT) !is 0) style &= ~SWT.RIGHT_TO_LEFT;
+    return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
+}
+
+public static GC gtk_new(GdkGC* handle, GCData data) {
+    GC gc = new GC();
+    gc.device = data.device;
+    gc.init_(null, data, handle);
+    return gc;
+}
+
+public static GC gtk_new(Drawable drawable, GCData data) {
+    GC gc = new GC();
+    auto gdkGC = drawable.internal_new_GC(data);
+    gc.device = data.device;
+    gc.init_(drawable, data, gdkGC);
+    return gc;
+}
+
+void checkGC (int mask) {
+    int state = data.state;
+    if ((state & mask) is mask) return;
+    state = (state ^ mask) & mask;
+    data.state |= mask;
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        if ((state & (BACKGROUND | FOREGROUND)) !is 0) {
+            GdkColor* color;
+            Pattern pattern;
+            if ((state & FOREGROUND) !is 0) {
+                color = data.foreground;
+                pattern = data.foregroundPattern;
+                data.state &= ~BACKGROUND;
+            } else {
+                color = data.background;
+                pattern = data.backgroundPattern;
+                data.state &= ~FOREGROUND;
+            }
+            if  (pattern !is null) {
+                if ((data.style & SWT.MIRRORED) !is 0 && pattern.surface !is null) {
+                    auto newPattern = Cairo.cairo_pattern_create_for_surface(pattern.surface);
+                    if (newPattern is null) SWT.error(SWT.ERROR_NO_HANDLES);
+                    Cairo.cairo_pattern_set_extend(newPattern, Cairo.CAIRO_EXTEND_REPEAT);
+                    double[6] matrix; matrix[0] = -1; matrix[1] = 0; matrix[2] = 0; matrix[3] = 1; matrix[4] = 0; matrix[5] = 0;
+                    Cairo.cairo_pattern_set_matrix(newPattern, cast(cairo_matrix_t*) matrix.ptr);
+                    Cairo.cairo_set_source(cairo, newPattern);
+                    Cairo.cairo_pattern_destroy(newPattern);
+                } else {
+                    Cairo.cairo_set_source(cairo, pattern.handle);
+                }
+            } else {
+                Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / cast(float)0xFFFF, (color.green & 0xFFFF) / cast(float)0xFFFF, (color.blue & 0xFFFF) / cast(float)0xFFFF, data.alpha / cast(float)0xFF);
+            }
+        }
+        if ((state & FONT) !is 0) {
+            if (data.layout !is null) {
+                Font font = data.font;
+                OS.pango_layout_set_font_description(data.layout, font.handle);
+            }
+            if (OS.GTK_VERSION < OS.buildVERSION(2, 8, 0)) {
+                setCairoFont(cairo, data.font);
+            }
+        }
+        if ((state & LINE_CAP) !is 0) {
+            int cap_style = 0;
+            switch (data.lineCap) {
+                case SWT.CAP_ROUND: cap_style = Cairo.CAIRO_LINE_CAP_ROUND; break;
+                case SWT.CAP_FLAT: cap_style = Cairo.CAIRO_LINE_CAP_BUTT; break;
+                case SWT.CAP_SQUARE: cap_style = Cairo.CAIRO_LINE_CAP_SQUARE; break;
+                default:
+            }
+            Cairo.cairo_set_line_cap(cairo, cap_style);
+        }
+        if ((state & LINE_JOIN) !is 0) {
+            int join_style = 0;
+            switch (data.lineJoin) {
+                case SWT.JOIN_MITER: join_style = Cairo.CAIRO_LINE_JOIN_MITER; break;
+                case SWT.JOIN_ROUND:  join_style = Cairo.CAIRO_LINE_JOIN_ROUND; break;
+                case SWT.JOIN_BEVEL: join_style = Cairo.CAIRO_LINE_JOIN_BEVEL; break;
+                default:
+            }
+            Cairo.cairo_set_line_join(cairo, join_style);
+        }
+        if ((state & LINE_WIDTH) !is 0) {
+            Cairo.cairo_set_line_width(cairo, data.lineWidth is 0 ? 1 : data.lineWidth);
+            switch (data.lineStyle) {
+                case SWT.LINE_DOT:
+                case SWT.LINE_DASH:
+                case SWT.LINE_DASHDOT:
+                case SWT.LINE_DASHDOTDOT:
+                    state |= LINE_STYLE;
+                default:
+            }
+        }
+        if ((state & LINE_STYLE) !is 0) {
+            float dashesOffset = 0;
+            float[] dashes = null;
+            float width = data.lineWidth;
+            switch (data.lineStyle) {
+                case SWT.LINE_SOLID: break;
+                case SWT.LINE_DASH: dashes = width !is 0 ? LINE_DASH : LINE_DASH_ZERO; break;
+                case SWT.LINE_DOT: dashes = width !is 0 ? LINE_DOT : LINE_DOT_ZERO; break;
+                case SWT.LINE_DASHDOT: dashes = width !is 0 ? LINE_DASHDOT : LINE_DASHDOT_ZERO; break;
+                case SWT.LINE_DASHDOTDOT: dashes = width !is 0 ? LINE_DASHDOTDOT : LINE_DASHDOTDOT_ZERO; break;
+                case SWT.LINE_CUSTOM: dashes = data.lineDashes; break;
+                default:
+            }
+            if (dashes !is null) {
+                dashesOffset = data.lineDashesOffset;
+                double[] cairoDashes = new double[dashes.length];
+                for (int i = 0; i < cairoDashes.length; i++) {
+                    cairoDashes[i] = width is 0 || data.lineStyle is SWT.LINE_CUSTOM ? dashes[i] : dashes[i] * width;
+                }
+                Cairo.cairo_set_dash(cairo, cairoDashes.ptr, cairoDashes.length, dashesOffset);
+            } else {
+                Cairo.cairo_set_dash(cairo, null, 0, 0);
+            }
+        }
+        if ((state & LINE_MITERLIMIT) !is 0) {
+            Cairo.cairo_set_miter_limit(cairo, data.lineMiterLimit);
+        }
+        if ((state & DRAW_OFFSET) !is 0) {
+            data.cairoXoffset = data.cairoYoffset = 0;
+            double[] matrix = new double[6];
+            Cairo.cairo_get_matrix(cairo,cast(cairo_matrix_t*) matrix.ptr);
+            double dx = 1;
+            double dy = 1;
+            Cairo.cairo_user_to_device_distance(cairo, &dx, &dy);
+            double scaling = dx;
+            if (scaling < 0) scaling = -scaling;
+            double strokeWidth = data.lineWidth * scaling;
+            if (strokeWidth is 0 || (cast(int)strokeWidth % 2) is 1) {
+                data.cairoXoffset = 0.5 / scaling;
+            }
+            scaling = dy;
+            if (scaling < 0) scaling = -scaling;
+            strokeWidth = data.lineWidth * scaling;
+            if (strokeWidth is 0 || (cast(int)strokeWidth % 2) is 1) {
+                data.cairoYoffset = 0.5 / scaling;
+            }
+        }
+        return;
+    }
+    if ((state & (BACKGROUND | FOREGROUND)) !is 0) {
+        GdkColor* foreground;
+        if ((state & FOREGROUND) !is 0) {
+            foreground = data.foreground;
+            data.state &= ~BACKGROUND;
+        } else {
+            foreground = data.background;
+            data.state &= ~FOREGROUND;
+        }
+        OS.gdk_gc_set_foreground(handle, foreground);
+    }
+    if ((state & BACKGROUND_BG) !is 0) {
+        GdkColor* background = data.background;
+        OS.gdk_gc_set_background(handle, background);
+    }
+    if ((state & FONT) !is 0) {
+        if (data.layout !is null) {
+            Font font = data.font;
+            OS.pango_layout_set_font_description(data.layout, font.handle);
+        }
+    }
+    if ((state & (LINE_CAP | LINE_JOIN | LINE_STYLE | LINE_WIDTH)) !is 0) {
+        int cap_style = 0;
+        int join_style = 0;
+        int width = cast(int)data.lineWidth;
+        int line_style = 0;
+        float[] dashes = null;
+        switch (data.lineCap) {
+            case SWT.CAP_ROUND: cap_style = OS.GDK_CAP_ROUND; break;
+            case SWT.CAP_FLAT: cap_style = OS.GDK_CAP_BUTT; break;
+            case SWT.CAP_SQUARE: cap_style = OS.GDK_CAP_PROJECTING; break;
+                default:
+        }
+        switch (data.lineJoin) {
+            case SWT.JOIN_ROUND: join_style = OS.GDK_JOIN_ROUND; break;
+            case SWT.JOIN_MITER: join_style = OS.GDK_JOIN_MITER; break;
+            case SWT.JOIN_BEVEL: join_style = OS.GDK_JOIN_BEVEL; break;
+                default:
+        }
+        switch (data.lineStyle) {
+            case SWT.LINE_SOLID: break;
+            case SWT.LINE_DASH: dashes = width !is 0 ? LINE_DASH : LINE_DASH_ZERO; break;
+            case SWT.LINE_DOT: dashes = width !is 0 ? LINE_DOT : LINE_DOT_ZERO; break;
+            case SWT.LINE_DASHDOT: dashes = width !is 0 ? LINE_DASHDOT : LINE_DASHDOT_ZERO; break;
+            case SWT.LINE_DASHDOTDOT: dashes = width !is 0 ? LINE_DASHDOTDOT : LINE_DASHDOTDOT_ZERO; break;
+            case SWT.LINE_CUSTOM: dashes = data.lineDashes; break;
+                default:
+        }
+        if (dashes !is null) {
+            if ((state & LINE_STYLE) !is 0) {
+                String dash_list = new char[dashes.length];
+                for (int i = 0; i < dash_list.length; i++) {
+                    dash_list[i] = cast(char)(width is 0 || data.lineStyle is SWT.LINE_CUSTOM ? dashes[i] : dashes[i] * width);
+                }
+                OS.gdk_gc_set_dashes(handle, 0, dash_list.ptr, dash_list.length);
+            }
+            line_style = OS.GDK_LINE_ON_OFF_DASH;
+        } else {
+            line_style = OS.GDK_LINE_SOLID;
+        }
+        OS.gdk_gc_set_line_attributes(handle, width, line_style, cap_style, join_style);
+    }
+}
+
+GdkRegion* convertRgn(GdkRegion* rgn, double[] matrix) {
+    auto newRgn = OS.gdk_region_new();
+    int nRects;
+    GdkRectangle* rects;
+    OS.gdk_region_get_rectangles(rgn, &rects, &nRects);
+    GdkRectangle* rect;
+    int[8] pointArray;
+    double x, y;
+    for (int i=0; i<nRects; i++) {
+        rect = rects +i;
+        x = rect.x;
+        y = rect.y;
+        Cairo.cairo_matrix_transform_point(cast(cairo_matrix_t*)matrix.ptr, &x, &y);
+        pointArray[0] = cast(int)x;
+        pointArray[1] = cast(int)y;
+        x = rect.x + rect.width;
+        y = rect.y;
+        Cairo.cairo_matrix_transform_point(cast(cairo_matrix_t*)matrix.ptr, &x, &y);
+        pointArray[2] = cast(int)Math.round(x);
+        pointArray[3] = cast(int)y;
+        x = rect.x + rect.width;
+        y = rect.y + rect.height;
+        Cairo.cairo_matrix_transform_point(cast(cairo_matrix_t*)matrix.ptr, &x, &y);
+        pointArray[4] = cast(int)Math.round(x);
+        pointArray[5] = cast(int)Math.round(y);
+        x = rect.x;
+        y = rect.y + rect.height;
+        Cairo.cairo_matrix_transform_point(cast(cairo_matrix_t*)matrix.ptr, &x, &y);
+        pointArray[6] = cast(int)x;
+        pointArray[7] = cast(int)Math.round(y);
+        auto polyRgn = OS.gdk_region_polygon(cast(GdkPoint*)pointArray.ptr, pointArray.length / 2, OS.GDK_EVEN_ODD_RULE);
+        OS.gdk_region_union(newRgn, polyRgn);
+        OS.gdk_region_destroy(polyRgn);
+    }
+    if (rects !is null) OS.g_free(rects);
+    return newRgn;
+}
+
+/**
+ * Copies a rectangular area of the receiver at the specified
+ * position into the image, which must be of type <code>SWT.BITMAP</code>.
+ *
+ * @param image the image to copy into
+ * @param x the x coordinate in the receiver of the area to be copied
+ * @param y the y coordinate in the receiver of the area to be copied
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the image is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the image is not a bitmap or has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void copyArea(Image image, int x, int y) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (image is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (image.type !is SWT.BITMAP || image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    Rectangle rect = image.getBounds();
+    auto gdkGC = OS.gdk_gc_new(image.pixmap);
+    if (gdkGC is null) SWT.error(SWT.ERROR_NO_HANDLES);
+    OS.gdk_gc_set_subwindow(gdkGC, OS.GDK_INCLUDE_INFERIORS);
+    OS.gdk_draw_drawable(image.pixmap, gdkGC, data.drawable, x, y, 0, 0, rect.width, rect.height);
+    OS.g_object_unref(gdkGC);
+}
+
+/**
+ * Copies a rectangular area of the receiver at the source
+ * position onto the receiver at the destination position.
+ *
+ * @param srcX the x coordinate in the receiver of the area to be copied
+ * @param srcY the y coordinate in the receiver of the area to be copied
+ * @param width the width of the area to copy
+ * @param height the height of the area to copy
+ * @param destX the x coordinate in the receiver of the area to copy to
+ * @param destY the y coordinate in the receiver of the area to copy to
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void copyArea(int srcX, int srcY, int width, int height, int destX, int destY) {
+    copyArea(srcX, srcY, width, height, destX, destY, true);
+}
+/**
+ * Copies a rectangular area of the receiver at the source
+ * position onto the receiver at the destination position.
+ *
+ * @param srcX the x coordinate in the receiver of the area to be copied
+ * @param srcY the y coordinate in the receiver of the area to be copied
+ * @param width the width of the area to copy
+ * @param height the height of the area to copy
+ * @param destX the x coordinate in the receiver of the area to copy to
+ * @param destY the y coordinate in the receiver of the area to copy to
+ * @param paint if <code>true</code> paint events will be generated for old and obscured areas
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public void copyArea(int srcX, int srcY, int width, int height, int destX, int destY, bool paint) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (width <= 0 || height <= 0) return;
+    int deltaX = destX - srcX, deltaY = destY - srcY;
+    if (deltaX is 0 && deltaY is 0) return;
+    auto drawable = data.drawable;
+    if (data.image is null && paint) OS.gdk_gc_set_exposures(handle, true);
+    OS.gdk_draw_drawable(drawable, handle, drawable, srcX, srcY, destX, destY, width, height);
+    if (data.image is null & paint) {
+        OS.gdk_gc_set_exposures(handle, false);
+        bool disjoint = (destX + width < srcX) || (srcX + width < destX) || (destY + height < srcY) || (srcY + height < destY);
+        GdkRectangle rect;
+        if (disjoint) {
+            rect.x = srcX;
+            rect.y = srcY;
+            rect.width = width;
+            rect.height = height;
+            OS.gdk_window_invalidate_rect (cast(GdkWindow*)drawable, &rect, false);
+//          OS.gdk_window_clear_area_e(drawable, srcX, srcY, width, height);
+        } else {
+            if (deltaX !is 0) {
+                int newX = destX - deltaX;
+                if (deltaX < 0) newX = destX + width;
+                rect.x = newX;
+                rect.y = srcY;
+                rect.width = Math.abs(deltaX);
+                rect.height = height;
+                OS.gdk_window_invalidate_rect (cast(GdkWindow*)drawable, &rect, false);
+//              OS.gdk_window_clear_area_e(drawable, newX, srcY, Math.abs(deltaX), height);
+            }
+            if (deltaY !is 0) {
+                int newY = destY - deltaY;
+                if (deltaY < 0) newY = destY + height;
+                rect.x = srcX;
+                rect.y = newY;
+                rect.width = width;
+                rect.height = Math.abs(deltaY);
+                OS.gdk_window_invalidate_rect (cast(GdkWindow*)drawable, &rect, false);
+//              OS.gdk_window_clear_area_e(drawable, srcX, newY, width, Math.abs(deltaY));
+            }
+        }
+    }
+}
+
+void createLayout() {
+    auto context = OS.gdk_pango_context_get();
+    if (context is null) SWT.error(SWT.ERROR_NO_HANDLES);
+    data.context = context;
+    auto layout = OS.pango_layout_new(context);
+    if (layout is null) SWT.error(SWT.ERROR_NO_HANDLES);
+    data.layout = layout;
+    OS.pango_context_set_language(context, OS.gtk_get_default_language());
+    OS.pango_context_set_base_dir(context, (data.style & SWT.MIRRORED) !is 0 ? OS.PANGO_DIRECTION_RTL : OS.PANGO_DIRECTION_LTR);
+    OS.gdk_pango_context_set_colormap(context, OS.gdk_colormap_get_system());
+    if (OS.GTK_VERSION >= OS.buildVERSION(2, 4, 0)) {
+        OS.pango_layout_set_auto_dir(layout, false);
+    }
+}
+
+void disposeLayout() {
+    data.str = null;
+    if (data.context !is null) OS.g_object_unref(data.context);
+    if (data.layout !is null) OS.g_object_unref(data.layout);
+    data.layout = null;
+    data.context = null;
+}
+
+void destroy() {
+    if (data.disposeCairo) {
+        auto cairo = data.cairo;
+        if (cairo !is null) Cairo.cairo_destroy(cairo);
+        data.cairo = null;
+    }
+
+    /* Free resources */
+    auto clipRgn = data.clipRgn;
+    if (clipRgn !is null) OS.gdk_region_destroy(clipRgn);
+    Image image = data.image;
+    if (image !is null) {
+        image.memGC = null;
+        if (image.transparentPixel !is -1) image.createMask();
+    }
+
+    disposeLayout();
+
+    /* Dispose the GC */
+    if (drawable !is null) {
+        drawable.internal_dispose_GC(handle, data);
+    }
+    data.drawable = null;
+    data.clipRgn = null;
+    drawable = null;
+    handle = null;
+    data.image = null;
+    data.str = null;
+    data = null;
+}
+
+/**
+ * Draws the outline of a circular or elliptical arc
+ * within the specified rectangular area.
+ * <p>
+ * The resulting arc begins at <code>startAngle</code> and extends
+ * for <code>arcAngle</code> degrees, using the current color.
+ * Angles are interpreted such that 0 degrees is at the 3 o'clock
+ * position. A positive value indicates a counter-clockwise rotation
+ * while a negative value indicates a clockwise rotation.
+ * </p><p>
+ * The center of the arc is the center of the rectangle whose origin
+ * is (<code>x</code>, <code>y</code>) and whose size is specified by the
+ * <code>width</code> and <code>height</code> arguments.
+ * </p><p>
+ * The resulting arc covers an area <code>width + 1</code> pixels wide
+ * by <code>height + 1</code> pixels tall.
+ * </p>
+ *
+ * @param x the x coordinate of the upper-left corner of the arc to be drawn
+ * @param y the y coordinate of the upper-left corner of the arc to be drawn
+ * @param width the width of the arc to be drawn
+ * @param height the height of the arc to be drawn
+ * @param startAngle the beginning angle
+ * @param arcAngle the angular extent of the arc, relative to the start angle
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    checkGC(DRAW);
+    if (width < 0) {
+        x = x + width;
+        width = -width;
+    }
+    if (height < 0) {
+        y = y + height;
+        height = -height;
+    }
+    if (width is 0 || height is 0 || arcAngle is 0) return;
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset;
+        if (width is height) {
+            if (arcAngle >= 0) {
+                Cairo.cairo_arc_negative(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f, width / 2f, -startAngle * cast(float)Compatibility.PI / 180, -(startAngle + arcAngle) * cast(float)Compatibility.PI / 180);
+            } else {
+                Cairo.cairo_arc(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f, width / 2f, -startAngle * cast(float)Compatibility.PI / 180, -(startAngle + arcAngle) * cast(float)Compatibility.PI / 180);
+            }
+        } else {
+            Cairo.cairo_save(cairo);
+            Cairo.cairo_translate(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f);
+            Cairo.cairo_scale(cairo, width / 2f, height / 2f);
+            if (arcAngle >= 0) {
+                Cairo.cairo_arc_negative(cairo, 0, 0, 1, -startAngle * cast(float)Compatibility.PI / 180, -(startAngle + arcAngle) * cast(float)Compatibility.PI / 180);
+            } else {
+                Cairo.cairo_arc(cairo, 0, 0, 1, -startAngle * cast(float)Compatibility.PI / 180, -(startAngle + arcAngle) * cast(float)Compatibility.PI / 180);
+            }
+            Cairo.cairo_restore(cairo);
+        }
+        Cairo.cairo_stroke(cairo);
+        return;
+    }
+    OS.gdk_draw_arc(data.drawable, handle, 0, x, y, width, height, startAngle * 64, arcAngle * 64);
+}
+
+/**
+ * Draws a rectangle, based on the specified arguments, which has
+ * the appearance of the platform's <em>focus rectangle</em> if the
+ * platform supports such a notion, and otherwise draws a simple
+ * rectangle in the receiver's foreground color.
+ *
+ * @param x the x coordinate of the rectangle
+ * @param y the y coordinate of the rectangle
+ * @param width the width of the rectangle
+ * @param height the height of the rectangle
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #drawRectangle(int, int, int, int)
+ */
+public void drawFocus(int x, int y, int width, int height) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    /*
+    * Feature in GTK.  The function gtk_widget_get_default_style()
+    * can't be used here because gtk_paint_focus() uses GCs, which
+    * are not valid in the default style. The fix is to use a style
+    * from a widget.
+    */
+    auto style = OS.gtk_widget_get_style(data.device.shellHandle);
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        checkGC(FOREGROUND);
+        int lineWidth;
+        OS.gtk_widget_style_get1(data.device.shellHandle, OS.focus_line_width.ptr, &lineWidth );
+        Cairo.cairo_save(cairo);
+        Cairo.cairo_set_line_width(cairo, lineWidth);
+        double[] dashes = [1, 1];
+        double dash_offset = -lineWidth / 2f;
+        while (dash_offset < 0) dash_offset += 2;
+        Cairo.cairo_set_dash(cairo, dashes.ptr, dashes.length, dash_offset);
+        Cairo.cairo_rectangle(cairo, x + lineWidth / 2f, y + lineWidth / 2f, width, height);
+        Cairo.cairo_stroke(cairo);
+        Cairo.cairo_restore(cairo);
+        return;
+    }
+    char dummy;
+    OS.gtk_paint_focus(style,cast(GdkWindow *) data.drawable, OS.GTK_STATE_NORMAL, null, data.device.shellHandle, &dummy, x, y, width, height);
+}
+
+/**
+ * Draws the given image in the receiver at the specified
+ * coordinates.
+ *
+ * @param image the image to draw
+ * @param x the x coordinate of where to draw
+ * @param y the y coordinate of where to draw
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the image is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the given coordinates are outside the bounds of the image</li>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ * @exception SWTError <ul>
+ *    <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li>
+ * </ul>
+ */
+public void drawImage(Image image, int x, int y) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (image is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    drawImage(image, 0, 0, -1, -1, x, y, -1, -1, true);
+}
+
+/**
+ * Copies a rectangular area from the source image into a (potentially
+ * different sized) rectangular area in the receiver. If the source
+ * and destination areas are of differing sizes, then the source
+ * area will be stretched or shrunk to fit the destination area
+ * as it is copied. The copy fails if any part of the source rectangle
+ * lies outside the bounds of the source image, or if any of the width
+ * or height arguments are negative.
+ *
+ * @param image the source image
+ * @param srcX the x coordinate in the source image to copy from
+ * @param srcY the y coordinate in the source image to copy from
+ * @param srcWidth the width in pixels to copy from the source
+ * @param srcHeight the height in pixels to copy from the source
+ * @param destX the x coordinate in the destination to copy to
+ * @param destY the y coordinate in the destination to copy to
+ * @param destWidth the width in pixels of the destination rectangle
+ * @param destHeight the height in pixels of the destination rectangle
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the image is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative.
+ *    <li>ERROR_INVALID_ARGUMENT - if the source rectangle is not contained within the bounds of the source image</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ * @exception SWTError <ul>
+ *    <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li>
+ * </ul>
+ */
+public void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (srcWidth is 0 || srcHeight is 0 || destWidth is 0 || destHeight is 0) return;
+    if (srcX < 0 || srcY < 0 || srcWidth < 0 || srcHeight < 0 || destWidth < 0 || destHeight < 0) {
+        SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+    }
+    if (image is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    drawImage(image, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false);
+}
+
+void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, bool simple) {
+    int width;
+    int height;
+    OS.gdk_drawable_get_size(srcImage.pixmap, &width, &height);
+    int imgWidth = width;
+    int imgHeight = height;
+    if (simple) {
+        srcWidth = destWidth = imgWidth;
+        srcHeight = destHeight = imgHeight;
+    } else {
+        simple = srcX is 0 && srcY is 0 &&
+            srcWidth is destWidth && destWidth is imgWidth &&
+            srcHeight is destHeight && destHeight is imgHeight;
+        if (srcX + srcWidth > imgWidth || srcY + srcHeight > imgHeight) {
+            SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+        }
+    }
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        if (data.alpha !is 0) {
+            srcImage.createSurface();
+            Cairo.cairo_save(cairo);
+            if ((data.style & SWT.MIRRORED) !is 0) {
+                Cairo.cairo_scale(cairo, -1f,  1);
+                Cairo.cairo_translate(cairo, - 2 * destX - destWidth, 0);
+            }
+            Cairo.cairo_rectangle(cairo, destX , destY, destWidth, destHeight);
+            Cairo.cairo_clip(cairo);
+            Cairo.cairo_translate(cairo, destX - srcX, destY - srcY);
+            if (srcWidth !is destWidth || srcHeight !is destHeight) {
+                Cairo.cairo_scale(cairo, destWidth / cast(float)srcWidth,  destHeight / cast(float)srcHeight);
+            }
+            int filter = Cairo.CAIRO_FILTER_GOOD;
+            switch (data.interpolation) {
+                case SWT.DEFAULT: filter = Cairo.CAIRO_FILTER_GOOD; break;
+                case SWT.NONE: filter = Cairo.CAIRO_FILTER_NEAREST; break;
+                case SWT.LOW: filter = Cairo.CAIRO_FILTER_FAST; break;
+                case SWT.HIGH: filter = Cairo.CAIRO_FILTER_BEST; break;
+                default:
+            }
+            auto pattern = Cairo.cairo_pattern_create_for_surface(srcImage.surface);
+            if (pattern is null) SWT.error(SWT.ERROR_NO_HANDLES);
+            if (srcWidth !is destWidth || srcHeight !is destHeight) {
+                /*
+                * Bug in Cairo.  When drawing the image streched with an interpolation
+                * alghorithm, the edges of the image are faded.  This is not a bug, but
+                * it is not desired.  To avoid the faded edges, it should be possible to
+                * use cairo_pattern_set_extend() to set the pattern extend to either
+                * CAIRO_EXTEND_REFLECT or CAIRO_EXTEND_PAD, but these are not implemented
+                * in some versions of cairo (1.2.x) and have bugs in others (in 1.4.2 it
+                * draws with black edges).  The fix is to implement CAIRO_EXTEND_REFLECT
+                * by creating an image that is 3 times bigger than the original, drawing
+                * the original image in every quadrant (with an appropriate transform) and
+                * use this image as the pattern.
+                *
+                * NOTE: For some reaons, it is necessary to use CAIRO_EXTEND_PAD with
+                * the image that was created or the edges are still faded.
+                */
+                if (Cairo.cairo_version () >= Cairo.CAIRO_VERSION_ENCODE(1, 4, 0)) {
+                    auto surface = Cairo.cairo_image_surface_create(Cairo.CAIRO_FORMAT_ARGB32, imgWidth * 3, imgHeight * 3);
+                    auto cr = Cairo.cairo_create(surface);
+                    Cairo.cairo_set_source_surface(cr, srcImage.surface, imgWidth, imgHeight);
+                    Cairo.cairo_paint(cr);
+                    Cairo.cairo_scale(cr, -1, -1);
+                    Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth, -imgHeight);
+                    Cairo.cairo_paint(cr);
+                    Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth * 3, -imgHeight);
+                    Cairo.cairo_paint(cr);
+                    Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth, -imgHeight * 3);
+                    Cairo.cairo_paint(cr);
+                    Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth * 3, -imgHeight * 3);
+                    Cairo.cairo_paint(cr);
+                    Cairo.cairo_scale(cr, 1, -1);
+                    Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth, imgHeight);
+                    Cairo.cairo_paint(cr);
+                    Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth * 3, imgHeight);
+                    Cairo.cairo_paint(cr);
+                    Cairo.cairo_scale(cr, -1, -1);
+                    Cairo.cairo_set_source_surface(cr, srcImage.surface, imgWidth, -imgHeight);
+                    Cairo.cairo_paint(cr);
+                    Cairo.cairo_set_source_surface(cr, srcImage.surface, imgWidth, -imgHeight * 3);
+                    Cairo.cairo_paint(cr);
+                    Cairo.cairo_destroy(cr);
+                    auto newPattern = Cairo.cairo_pattern_create_for_surface(surface);
+                    Cairo.cairo_surface_destroy(surface);
+                    if (newPattern is null) SWT.error(SWT.ERROR_NO_HANDLES);
+                    Cairo.cairo_pattern_destroy(pattern);
+                    pattern = newPattern;
+                    Cairo.cairo_pattern_set_extend(pattern, Cairo.CAIRO_EXTEND_PAD);
+                    double[] matrix = new double[6];
+                    Cairo.cairo_matrix_init_translate(cast(cairo_matrix_t*)matrix.ptr, imgWidth, imgHeight);
+                    Cairo.cairo_pattern_set_matrix(pattern, cast(cairo_matrix_t*)matrix.ptr);
+                }
+//              Cairo.cairo_pattern_set_extend(pattern, Cairo.CAIRO_EXTEND_REFLECT);
+            }
+            Cairo.cairo_pattern_set_filter(pattern, filter);
+            Cairo.cairo_set_source(cairo, pattern);
+            if (data.alpha !is 0xFF) {
+                Cairo.cairo_paint_with_alpha(cairo, data.alpha / cast(float)0xFF);
+            } else {
+                Cairo.cairo_paint(cairo);
+            }
+            Cairo.cairo_restore(cairo);
+            Cairo.cairo_pattern_destroy(pattern);
+        }
+        return;
+    }
+    if (srcImage.alpha !is -1 || srcImage.alphaData !is null) {
+        drawImageAlpha(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight);
+    } else if (srcImage.transparentPixel !is -1 || srcImage.mask !is null) {
+        drawImageMask(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight);
+    } else {
+        drawImage(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight);
+    }
+}
+void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, bool simple, int imgWidth, int imgHeight) {
+    if (srcWidth is destWidth && srcHeight is destHeight) {
+        OS.gdk_draw_drawable(data.drawable, handle, srcImage.pixmap, srcX, srcY, destX, destY, destWidth, destHeight);
+    } else {
+        if (device.useXRender) {
+            drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, null, -1);
+            return;
+        }
+        auto pixbuf = scale(srcImage.pixmap, srcX, srcY, srcWidth, srcHeight, destWidth, destHeight);
+        if (pixbuf !is null) {
+            OS.gdk_pixbuf_render_to_drawable(pixbuf, data.drawable, handle, 0, 0, destX, destY, destWidth, destHeight, OS.GDK_RGB_DITHER_NORMAL, 0, 0);
+            OS.g_object_unref(pixbuf);
+        }
+    }
+}
+void drawImageAlpha(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, bool simple, int imgWidth, int imgHeight) {
+    if (srcImage.alpha is 0) return;
+    if (srcImage.alpha is 255) {
+        drawImage(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight);
+        return;
+    }
+    if (device.useXRender) {
+        drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, srcImage.mask, OS.PictStandardA8);
+        return;
+    }
+    auto pixbuf = OS.gdk_pixbuf_new(OS.GDK_COLORSPACE_RGB, true, 8, srcWidth, srcHeight);
+    if (pixbuf is null) return;
+    auto colormap = OS.gdk_colormap_get_system();
+    OS.gdk_pixbuf_get_from_drawable(pixbuf, srcImage.pixmap, colormap, srcX, srcY, 0, 0, srcWidth, srcHeight);
+    int stride = OS.gdk_pixbuf_get_rowstride(pixbuf);
+    auto pixels = OS.gdk_pixbuf_get_pixels(pixbuf);
+    byte[] line = new byte[stride];
+    byte alpha = cast(byte)srcImage.alpha;
+    byte[] alphaData = srcImage.alphaData;
+    for (int y=0; y<srcHeight; y++) {
+        int alphaIndex = (y + srcY) * imgWidth + srcX;
+        memmove(line.ptr, pixels + (y * stride), stride);
+        for (int x=3; x<stride; x+=4) {
+            line[x] = alphaData is null ? alpha : alphaData[alphaIndex++];
+        }
+        memmove(pixels + (y * stride), line.ptr, stride);
+    }
+    if (srcWidth !is destWidth || srcHeight !is destHeight) {
+        auto scaledPixbuf = OS.gdk_pixbuf_scale_simple(pixbuf, destWidth, destHeight, OS.GDK_INTERP_BILINEAR);
+        OS.g_object_unref(pixbuf);
+        if (scaledPixbuf is null) return;
+        pixbuf = scaledPixbuf;
+    }
+    /*
+    * Feature in GTK.  gdk_draw_pixbuf was introduced in GTK+ 2.2.0 and
+    * supports clipping.
+    */
+    if (OS.GTK_VERSION >= OS.buildVERSION (2, 2, 0)) {
+        OS.gdk_draw_pixbuf(data.drawable, handle, pixbuf, 0, 0, destX, destY, destWidth, destHeight, OS.GDK_RGB_DITHER_NORMAL, 0, 0);
+    } else {
+        OS.gdk_pixbuf_render_to_drawable_alpha(pixbuf, data.drawable, 0, 0, destX, destY, destWidth, destHeight, OS.GDK_PIXBUF_ALPHA_BILEVEL, 128, OS.GDK_RGB_DITHER_NORMAL, 0, 0);
+    }
+    OS.g_object_unref(pixbuf);
+}
+void drawImageMask(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, bool simple, int imgWidth, int imgHeight) {
+    auto drawable = data.drawable;
+    auto colorPixmap = srcImage.pixmap;
+    /* Generate the mask if necessary. */
+    if (srcImage.transparentPixel !is -1) srcImage.createMask();
+    auto maskPixmap = srcImage.mask;
+
+    if (device.useXRender) {
+        drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, maskPixmap, OS.PictStandardA1);
+    } else {
+        if (srcWidth !is destWidth || srcHeight !is destHeight) {
+            auto pixbuf = OS.gdk_pixbuf_new(OS.GDK_COLORSPACE_RGB, true, 8, srcWidth, srcHeight);
+            if (pixbuf !is null) {
+                auto colormap = OS.gdk_colormap_get_system();
+                OS.gdk_pixbuf_get_from_drawable(pixbuf, colorPixmap, colormap, srcX, srcY, 0, 0, srcWidth, srcHeight);
+                auto maskPixbuf = OS.gdk_pixbuf_new(OS.GDK_COLORSPACE_RGB, false, 8, srcWidth, srcHeight);
+                if (maskPixbuf !is null) {
+                    OS.gdk_pixbuf_get_from_drawable(maskPixbuf, maskPixmap, null, srcX, srcY, 0, 0, srcWidth, srcHeight);
+                    int stride = OS.gdk_pixbuf_get_rowstride(pixbuf);
+                    auto pixels = OS.gdk_pixbuf_get_pixels(pixbuf);
+                    byte[] line = new byte[stride];
+                    int maskStride = OS.gdk_pixbuf_get_rowstride(maskPixbuf);
+                    auto maskPixels = OS.gdk_pixbuf_get_pixels(maskPixbuf);
+                    byte[] maskLine = new byte[maskStride];
+                    for (int y=0; y<srcHeight; y++) {
+                        auto offset = pixels + (y * stride);
+                        memmove(line.ptr, offset, stride);
+                        auto maskOffset = maskPixels + (y * maskStride);
+                        memmove(maskLine.ptr, maskOffset, maskStride);
+                        for (int x=0; x<srcWidth; x++) {
+                            if (maskLine[x * 3] is 0) {
+                                line[x*4+3] = 0;
+                            }
+                        }
+                        memmove(offset, line.ptr, stride);
+                    }
+                    OS.g_object_unref(maskPixbuf);
+                    auto scaledPixbuf = OS.gdk_pixbuf_scale_simple(pixbuf, destWidth, destHeight, OS.GDK_INTERP_BILINEAR);
+                    if (scaledPixbuf !is null) {
+                        GdkPixmap * colorBuffer;
+                        GdkBitmap * maskBuffer;
+                        OS.gdk_pixbuf_render_pixmap_and_mask(scaledPixbuf, &colorBuffer, &maskBuffer, 128);
+                        colorPixmap = cast(GdkDrawable *)colorBuffer;
+                        maskPixmap = cast(GdkDrawable *)maskBuffer;
+                        OS.g_object_unref(scaledPixbuf);
+                    }
+                }
+                OS.g_object_unref(pixbuf);
+            }
+            srcX = 0;
+            srcY = 0;
+            srcWidth = destWidth;
+            srcHeight = destHeight;
+        }
+
+        /* Merge clipping with mask if necessary */
+        if (data.clipRgn !is null) {
+            int newWidth =  srcX + srcWidth;
+            int newHeight = srcY + srcHeight;
+            int bytesPerLine = (newWidth + 7) / 8;
+            String maskData = new char[bytesPerLine * newHeight];
+            auto mask = cast(GdkDrawable *) OS.gdk_bitmap_create_from_data(null, maskData.ptr, newWidth, newHeight);
+            if (mask !is null) {
+                auto gc = OS.gdk_gc_new(mask);
+                OS.gdk_region_offset(data.clipRgn, -destX + srcX, -destY + srcY);
+                OS.gdk_gc_set_clip_region(gc, data.clipRgn);
+                OS.gdk_region_offset(data.clipRgn, destX - srcX, destY - srcY);
+                GdkColor* color = new GdkColor();
+                color.pixel = 1;
+                OS.gdk_gc_set_foreground(gc, color);
+                OS.gdk_draw_rectangle(mask, gc, 1, 0, 0, newWidth, newHeight);
+                OS.gdk_gc_set_function(gc, OS.GDK_AND);
+                OS.gdk_draw_drawable(mask, gc, maskPixmap, 0, 0, 0, 0, newWidth, newHeight);
+                OS.g_object_unref(gc);
+                if (maskPixmap !is null && srcImage.mask !is maskPixmap) OS.g_object_unref(maskPixmap);
+                maskPixmap = mask;
+            }
+        }
+
+        /* Blit cliping the mask */
+        GdkGCValues* values = new GdkGCValues();
+        OS.gdk_gc_get_values(handle, values);
+        OS.gdk_gc_set_clip_mask(handle, cast(GdkBitmap *)maskPixmap);
+        OS.gdk_gc_set_clip_origin(handle, destX - srcX, destY - srcY);
+        OS.gdk_draw_drawable(drawable, handle, colorPixmap, srcX, srcY, destX, destY, srcWidth, srcHeight);
+        OS.gdk_gc_set_values(handle, values, OS.GDK_GC_CLIP_MASK | OS.GDK_GC_CLIP_X_ORIGIN | OS.GDK_GC_CLIP_Y_ORIGIN);
+        if (data.clipRgn !is null) OS.gdk_gc_set_clip_region(handle, data.clipRgn);
+    }
+
+    /* Destroy scaled pixmaps */
+    if (colorPixmap !is null && srcImage.pixmap !is colorPixmap) OS.g_object_unref(colorPixmap);
+    if (maskPixmap !is null && srcImage.mask !is maskPixmap) OS.g_object_unref(maskPixmap);
+    /* Destroy the image mask if the there is a GC created on the image */
+    if (srcImage.transparentPixel !is -1 && srcImage.memGC !is null) srcImage.destroyMask();
+}
+void drawImageXRender(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, bool simple, int imgWidth, int imgHeight, GdkDrawable* maskPixmap, int maskType) {
+    int translateX = 0, translateY = 0;
+    auto drawable = data.drawable;
+    if (data.image is null && !data.realDrawable) {
+        int x, y;
+        GdkDrawable* real_drawable;
+        OS.gdk_window_get_internal_paint_info(cast(GdkWindow*)drawable, &real_drawable, &x, &y);
+        drawable = real_drawable;
+        translateX = -x;
+        translateY = -y;
+    }
+    auto xDisplay = OS.GDK_DISPLAY();
+    int maskPict = 0;
+    if (maskPixmap !is null) {
+        int attribCount = 0;
+        XRenderPictureAttributes* attrib;
+        if (srcImage.alpha !is -1) {
+            attribCount = 1;
+            attrib = new XRenderPictureAttributes();
+            attrib.repeat = true;
+        }
+        maskPict = OS.XRenderCreatePicture(cast(void*)xDisplay, OS.gdk_x11_drawable_get_xid(maskPixmap), OS.XRenderFindStandardFormat(cast(void*)xDisplay, maskType), attribCount, attrib);
+        if (maskPict is 0) SWT.error(SWT.ERROR_NO_HANDLES);
+    }
+    auto format = OS.XRenderFindVisualFormat(cast(void*)xDisplay, OS.gdk_x11_visual_get_xvisual(OS.gdk_visual_get_system()));
+    auto destPict = OS.XRenderCreatePicture(cast(void*)xDisplay, OS.gdk_x11_drawable_get_xid(drawable), format, 0, null);
+    if (destPict is 0) SWT.error(SWT.ERROR_NO_HANDLES);
+    int srcPict = OS.XRenderCreatePicture(xDisplay, OS.gdk_x11_drawable_get_xid(srcImage.pixmap), format, 0, null);
+    if (srcPict is 0) SWT.error(SWT.ERROR_NO_HANDLES);
+    if (srcWidth !is destWidth || srcHeight !is destHeight) {
+        int[] transform = [cast(int)((cast(float)srcWidth / destWidth) * 65536), 0, 0, 0, cast(int)((cast(float)srcHeight / destHeight) * 65536), 0, 0, 0, 65536];
+        OS.XRenderSetPictureTransform(xDisplay, srcPict, cast(XTransform*)transform.ptr);
+        if (maskPict !is 0) OS.XRenderSetPictureTransform(xDisplay, maskPict, cast(XTransform*)transform.ptr);
+        srcX *= destWidth / cast(float)srcWidth;
+        srcY *= destHeight / cast(float)srcHeight;
+    }
+    auto clipping = data.clipRgn;
+    if (data.damageRgn !is null) {
+        if (clipping is null) {
+            clipping = data.damageRgn;
+        } else {
+            clipping = OS.gdk_region_new();
+            OS.gdk_region_union(clipping, data.clipRgn);
+            OS.gdk_region_intersect(clipping, data.damageRgn);
+        }
+    }
+    if (clipping !is null) {
+        int nRects;
+        GdkRectangle* rects;
+        OS.gdk_region_get_rectangles(clipping, &rects, &nRects);
+        GdkRectangle* rect;
+        short[] xRects = new short[nRects * 4];
+        for (int i=0, j=0; i<nRects; i++, j+=4) {
+            rect = rects +i;
+            xRects[j  ] = cast(short)rect.x;
+            xRects[j+1] = cast(short)rect.y;
+            xRects[j+2] = cast(short)rect.width;
+            xRects[j+3] = cast(short)rect.height;
+        }
+        OS.XRenderSetPictureClipRectangles(xDisplay, destPict, translateX, translateY,cast(XRectangle*) xRects.ptr, nRects);
+        if (clipping !is data.clipRgn && clipping !is data.damageRgn) {
+            OS.gdk_region_destroy(clipping);
+        }
+        if (rects !is null) OS.g_free(rects);
+    }
+    OS.XRenderComposite(xDisplay, maskPict !is 0 ? OS.PictOpOver : OS.PictOpSrc, srcPict, maskPict, destPict, srcX, srcY, srcX, srcY, destX + translateX, destY + translateY, destWidth, destHeight);
+    OS.XRenderFreePicture(xDisplay, destPict);
+    OS.XRenderFreePicture(xDisplay, srcPict);
+    if (maskPict !is 0) OS.XRenderFreePicture(xDisplay, maskPict);
+}
+
+GdkPixbuf* scale(GdkDrawable* src, int srcX, int srcY, int srcWidth, int srcHeight, int destWidth, int destHeight) {
+    auto pixbuf = OS.gdk_pixbuf_new(OS.GDK_COLORSPACE_RGB, false, 8, srcWidth, srcHeight);
+    if (pixbuf is null) return null;
+    auto colormap = OS.gdk_colormap_get_system();
+    OS.gdk_pixbuf_get_from_drawable(pixbuf, src, colormap, srcX, srcY, 0, 0, srcWidth, srcHeight);
+    auto scaledPixbuf = OS.gdk_pixbuf_scale_simple(pixbuf, destWidth, destHeight, OS.GDK_INTERP_BILINEAR);
+    OS.g_object_unref(pixbuf);
+    return scaledPixbuf;
+}
+
+/**
+ * Draws a line, using the foreground color, between the points
+ * (<code>x1</code>, <code>y1</code>) and (<code>x2</code>, <code>y2</code>).
+ *
+ * @param x1 the first point's x coordinate
+ * @param y1 the first point's y coordinate
+ * @param x2 the second point's x coordinate
+ * @param y2 the second point's y coordinate
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawLine(int x1, int y1, int x2, int y2) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    checkGC(DRAW);
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset;
+        Cairo.cairo_move_to(cairo, x1 + xOffset, y1 + yOffset);
+        Cairo.cairo_line_to(cairo, x2 + xOffset, y2 + yOffset);
+        Cairo.cairo_stroke(cairo);
+        return;
+    }
+    OS.gdk_draw_line (data.drawable, handle, x1, y1, x2, y2);
+}
+
+/**
+ * Draws the outline of an oval, using the foreground color,
+ * within the specified rectangular area.
+ * <p>
+ * The result is a circle or ellipse that fits within the
+ * rectangle specified by the <code>x</code>, <code>y</code>,
+ * <code>width</code>, and <code>height</code> arguments.
+ * </p><p>
+ * The oval covers an area that is <code>width + 1</code>
+ * pixels wide and <code>height + 1</code> pixels tall.
+ * </p>
+ *
+ * @param x the x coordinate of the upper left corner of the oval to be drawn
+ * @param y the y coordinate of the upper left corner of the oval to be drawn
+ * @param width the width of the oval to be drawn
+ * @param height the height of the oval to be drawn
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawOval(int x, int y, int width, int height) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    checkGC(DRAW);
+    if (width < 0) {
+        x = x + width;
+        width = -width;
+    }
+    if (height < 0) {
+        y = y + height;
+        height = -height;
+    }
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset;
+        if (width is height) {
+            Cairo.cairo_arc_negative(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f, width / 2f, 0, -2 * cast(float)Compatibility.PI);
+        } else {
+            Cairo.cairo_save(cairo);
+            Cairo.cairo_translate(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f);
+            Cairo.cairo_scale(cairo, width / 2f, height / 2f);
+            Cairo.cairo_arc_negative(cairo, 0, 0, 1, 0, -2 * cast(float)Compatibility.PI);
+            Cairo.cairo_restore(cairo);
+        }
+        Cairo.cairo_stroke(cairo);
+        return;
+    }
+    OS.gdk_draw_arc(data.drawable, handle, 0, x, y, width, height, 0, 23040);
+}
+
+/**
+ * Draws the path described by the parameter.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param path the path to draw
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parameter is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see Path
+ *
+ * @since 3.1
+ */
+public void drawPath(Path path) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (path is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (path.handle is null) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    initCairo();
+    checkGC(DRAW);
+    auto cairo = data.cairo;
+    Cairo.cairo_save(cairo);
+    double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset;
+    Cairo.cairo_translate(cairo, xOffset, yOffset);
+    auto copy = Cairo.cairo_copy_path(path.handle);
+    if (copy is null) SWT.error(SWT.ERROR_NO_HANDLES);
+    Cairo.cairo_append_path(cairo, copy);
+    Cairo.cairo_path_destroy(copy);
+    Cairo.cairo_stroke(cairo);
+    Cairo.cairo_restore(cairo);
+}
+
+/**
+ * Draws a pixel, using the foreground color, at the specified
+ * point (<code>x</code>, <code>y</code>).
+ * <p>
+ * Note that the receiver's line attributes do not affect this
+ * operation.
+ * </p>
+ *
+ * @param x the point's x coordinate
+ * @param y the point's y coordinate
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public void drawPoint (int x, int y) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    checkGC(DRAW);
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        Cairo.cairo_rectangle(cairo, x, y, 1, 1);
+        Cairo.cairo_fill(cairo);
+        return;
+    }
+    OS.gdk_draw_point(data.drawable, handle, x, y);
+}
+
+/**
+ * Draws the closed polygon which is defined by the specified array
+ * of integer coordinates, using the receiver's foreground color. The array
+ * contains alternating x and y values which are considered to represent
+ * points which are the vertices of the polygon. Lines are drawn between
+ * each consecutive pair, and between the first pair and last pair in the
+ * array.
+ *
+ * @param pointArray an array of alternating x and y values which are the vertices of the polygon
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawPolygon(int[] pointArray) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    // SWT externsion: allow null array
+    //if (pointArray is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    checkGC(DRAW);
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        drawPolyline(cairo, pointArray, true);
+        Cairo.cairo_stroke(cairo);
+        return;
+    }
+    OS.gdk_draw_polygon(data.drawable, handle, 0, cast(GdkPoint*)pointArray.ptr, pointArray.length / 2);
+}
+
+/**
+ * Draws the polyline which is defined by the specified array
+ * of integer coordinates, using the receiver's foreground color. The array
+ * contains alternating x and y values which are considered to represent
+ * points which are the corners of the polyline. Lines are drawn between
+ * each consecutive pair, but not between the first pair and last pair in
+ * the array.
+ *
+ * @param pointArray an array of alternating x and y values which are the corners of the polyline
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawPolyline(int[] pointArray) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    // SWT externsion: allow null array
+    //if (pointArray is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    checkGC(DRAW);
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        drawPolyline(cairo, pointArray, false);
+        Cairo.cairo_stroke(cairo);
+        return;
+    }
+    OS.gdk_draw_lines(data.drawable, handle, cast(GdkPoint*)pointArray.ptr, pointArray.length / 2);
+}
+
+void drawPolyline(cairo_t* cairo, int[] pointArray, bool close) {
+    int count = pointArray.length / 2;
+    if (count is 0) return;
+    double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset;
+    Cairo.cairo_move_to(cairo, pointArray[0] + xOffset, pointArray[1] + yOffset);
+    for (int i = 1, j=2; i < count; i++, j += 2) {
+        Cairo.cairo_line_to(cairo, pointArray[j] + xOffset, pointArray[j + 1] + yOffset);
+    }
+    if (close) Cairo.cairo_close_path(cairo);
+}
+
+/**
+ * Draws the outline of the rectangle specified by the arguments,
+ * using the receiver's foreground color. The left and right edges
+ * of the rectangle are at <code>x</code> and <code>x + width</code>.
+ * The top and bottom edges are at <code>y</code> and <code>y + height</code>.
+ *
+ * @param x the x coordinate of the rectangle to be drawn
+ * @param y the y coordinate of the rectangle to be drawn
+ * @param width the width of the rectangle to be drawn
+ * @param height the height of the rectangle to be drawn
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawRectangle(int x, int y, int width, int height) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    checkGC(DRAW);
+    if (width < 0) {
+        x = x + width;
+        width = -width;
+    }
+    if (height < 0) {
+        y = y + height;
+        height = -height;
+    }
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset;
+        Cairo.cairo_rectangle(cairo, x + xOffset, y + yOffset, width, height);
+        Cairo.cairo_stroke(cairo);
+        return;
+    }
+    OS.gdk_draw_rectangle(data.drawable, handle, 0, x, y, width, height);
+}
+
+/**
+ * Draws the outline of the specified rectangle, using the receiver's
+ * foreground color. The left and right edges of the rectangle are at
+ * <code>rect.x</code> and <code>rect.x + rect.width</code>. The top
+ * and bottom edges are at <code>rect.y</code> and
+ * <code>rect.y + rect.height</code>.
+ *
+ * @param rect the rectangle to draw
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawRectangle(Rectangle rect) {
+    if (rect is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    drawRectangle (rect.x, rect.y, rect.width, rect.height);
+}
+/**
+ * Draws the outline of the round-cornered rectangle specified by
+ * the arguments, using the receiver's foreground color. The left and
+ * right edges of the rectangle are at <code>x</code> and <code>x + width</code>.
+ * The top and bottom edges are at <code>y</code> and <code>y + height</code>.
+ * The <em>roundness</em> of the corners is specified by the
+ * <code>arcWidth</code> and <code>arcHeight</code> arguments, which
+ * are respectively the width and height of the ellipse used to draw
+ * the corners.
+ *
+ * @param x the x coordinate of the rectangle to be drawn
+ * @param y the y coordinate of the rectangle to be drawn
+ * @param width the width of the rectangle to be drawn
+ * @param height the height of the rectangle to be drawn
+ * @param arcWidth the width of the arc
+ * @param arcHeight the height of the arc
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawRoundRectangle(int x, int y, int width, int height, int arcWidth, int arcHeight) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    checkGC(DRAW);
+    int nx = x;
+    int ny = y;
+    int nw = width;
+    int nh = height;
+    int naw = arcWidth;
+    int nah = arcHeight;
+    if (nw < 0) {
+        nw = 0 - nw;
+        nx = nx - nw;
+    }
+    if (nh < 0) {
+        nh = 0 - nh;
+        ny = ny -nh;
+    }
+    if (naw < 0) naw = 0 - naw;
+    if (nah < 0) nah = 0 - nah;
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset;
+        if (naw is 0 || nah is 0) {
+            Cairo.cairo_rectangle(cairo, x + xOffset, y + yOffset, width, height);
+        } else {
+            float naw2 = naw / 2f;
+            float nah2 = nah / 2f;
+            float fw = nw / naw2;
+            float fh = nh / nah2;
+            Cairo.cairo_save(cairo);
+            Cairo.cairo_translate(cairo, nx + xOffset, ny + yOffset);
+            Cairo.cairo_scale(cairo, naw2, nah2);
+            Cairo.cairo_move_to(cairo, fw - 1, 0);
+            Cairo.cairo_arc(cairo, fw - 1, 1, 1, Compatibility.PI + Compatibility.PI/2.0, Compatibility.PI*2.0);
+            Cairo.cairo_arc(cairo, fw - 1, fh - 1, 1, 0, Compatibility.PI/2.0);
+            Cairo.cairo_arc(cairo, 1, fh - 1, 1, Compatibility.PI/2, Compatibility.PI);
+            Cairo.cairo_arc(cairo, 1, 1, 1, Compatibility.PI, 270.0*Compatibility.PI/180.0);
+            Cairo.cairo_close_path(cairo);
+            Cairo.cairo_restore(cairo);
+        }
+        Cairo.cairo_stroke(cairo);
+        return;
+    }
+    int naw2 = naw / 2;
+    int nah2 = nah / 2;
+    auto drawable = data.drawable;
+    if (nw > naw) {
+        if (nh > nah) {
+            OS.gdk_draw_arc(drawable, handle, 0, nx, ny, naw, nah, 5760, 5760);
+            OS.gdk_draw_line(drawable, handle, nx + naw2, ny, nx + nw - naw2, ny);
+            OS.gdk_draw_arc(drawable, handle, 0, nx + nw - naw, ny, naw, nah, 0, 5760);
+            OS.gdk_draw_line(drawable, handle, nx + nw, ny + nah2, nx + nw, ny + nh - nah2);
+            OS.gdk_draw_arc(drawable, handle, 0, nx + nw - naw, ny + nh - nah, naw, nah, 17280, 5760);
+            OS.gdk_draw_line(drawable,handle, nx + naw2, ny + nh, nx + nw - naw2, ny + nh);
+            OS.gdk_draw_arc(drawable, handle, 0, nx, ny + nh - nah, naw, nah, 11520, 5760);
+            OS.gdk_draw_line(drawable, handle,  nx, ny + nah2, nx, ny + nh - nah2);
+        } else {
+            OS.gdk_draw_arc(drawable, handle, 0, nx, ny, naw, nh, 5760, 11520);
+            OS.gdk_draw_line(drawable, handle, nx + naw2, ny, nx + nw - naw2, ny);
+            OS.gdk_draw_arc(drawable, handle, 0, nx + nw - naw, ny, naw, nh, 17280, 11520);
+            OS.gdk_draw_line(drawable,handle, nx + naw2, ny + nh, nx + nw - naw2, ny + nh);
+        }
+    } else {
+        if (nh > nah) {
+            OS.gdk_draw_arc(drawable, handle, 0, nx, ny, nw, nah, 0, 11520);
+            OS.gdk_draw_line(drawable, handle, nx + nw, ny + nah2, nx + nw, ny + nh - nah2);
+            OS.gdk_draw_arc(drawable, handle, 0, nx, ny + nh - nah, nw, nah, 11520, 11520);
+            OS.gdk_draw_line(drawable,handle, nx, ny + nah2, nx, ny + nh - nah2);
+        } else {
+            OS.gdk_draw_arc(drawable, handle, 0, nx, ny, nw, nh, 0, 23040);
+        }
+    }
+}
+
+/**
+ * Draws the given str, using the receiver's current font and
+ * foreground color. No tab expansion or carriage return processing
+ * will be performed. The background of the rectangular area where
+ * the str is being drawn will be filled with the receiver's
+ * background color.
+ *
+ * @param str the str to be drawn
+ * @param x the x coordinate of the top left corner of the rectangular area where the str is to be drawn
+ * @param y the y coordinate of the top left corner of the rectangular area where the str is to be drawn
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawString (String str, int x, int y) {
+    drawString(str, x, y, false);
+}
+/**
+ * Draws the given str, using the receiver's current font and
+ * foreground color. No tab expansion or carriage return processing
+ * will be performed. If <code>isTransparent</code> is <code>true</code>,
+ * then the background of the rectangular area where the str is being
+ * drawn will not be modified, otherwise it will be filled with the
+ * receiver's background color.
+ *
+ * @param str the str to be drawn
+ * @param x the x coordinate of the top left corner of the rectangular area where the str is to be drawn
+ * @param y the y coordinate of the top left corner of the rectangular area where the str is to be drawn
+ * @param isTransparent if <code>true</code> the background will be transparent, otherwise it will be opaque
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawString(String str, int x, int y, bool isTransparent) {
+    drawText(str, x, y, isTransparent ? SWT.DRAW_TRANSPARENT : 0);
+}
+
+/**
+ * Draws the given str, using the receiver's current font and
+ * foreground color. Tab expansion and carriage return processing
+ * are performed. The background of the rectangular area where
+ * the text is being drawn will be filled with the receiver's
+ * background color.
+ *
+ * @param str the str to be drawn
+ * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
+ * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawText(String str, int x, int y) {
+    drawText(str, x, y, SWT.DRAW_DELIMITER | SWT.DRAW_TAB);
+}
+
+/**
+ * Draws the given str, using the receiver's current font and
+ * foreground color. Tab expansion and carriage return processing
+ * are performed. If <code>isTransparent</code> is <code>true</code>,
+ * then the background of the rectangular area where the text is being
+ * drawn will not be modified, otherwise it will be filled with the
+ * receiver's background color.
+ *
+ * @param str the str to be drawn
+ * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
+ * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
+ * @param isTransparent if <code>true</code> the background will be transparent, otherwise it will be opaque
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawText(String str, int x, int y, bool isTransparent) {
+    int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB;
+    if (isTransparent) flags |= SWT.DRAW_TRANSPARENT;
+    drawText(str, x, y, flags);
+}
+
+/**
+ * Draws the given str, using the receiver's current font and
+ * foreground color. Tab expansion, line delimiter and mnemonic
+ * processing are performed according to the specified flags. If
+ * <code>flags</code> includes <code>DRAW_TRANSPARENT</code>,
+ * then the background of the rectangular area where the text is being
+ * drawn will not be modified, otherwise it will be filled with the
+ * receiver's background color.
+ * <p>
+ * The parameter <code>flags</code> may be a combination of:
+ * <dl>
+ * <dt><b>DRAW_DELIMITER</b></dt>
+ * <dd>draw multiple lines</dd>
+ * <dt><b>DRAW_TAB</b></dt>
+ * <dd>expand tabs</dd>
+ * <dt><b>DRAW_MNEMONIC</b></dt>
+ * <dd>underline the mnemonic character</dd>
+ * <dt><b>DRAW_TRANSPARENT</b></dt>
+ * <dd>transparent background</dd>
+ * </dl>
+ * </p>
+ *
+ * @param str the str to be drawn
+ * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
+ * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
+ * @param flags the flags specifying how to process the text
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void drawText (String str, int x, int y, int flags) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    // SWT extension: allow null string
+    //if (str is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (str.length is 0) return;
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        if (OS.GTK_VERSION < OS.buildVERSION(2, 8, 0)) {
+            //TODO - honor flags
+            checkGC(FOREGROUND | FONT);
+            cairo_font_extents_t* extents = new cairo_font_extents_t();
+            Cairo.cairo_font_extents(cairo, extents);
+            double baseline = y + extents.ascent;
+            Cairo.cairo_move_to(cairo, x, baseline);
+            char* buffer = toStringz( str );
+            Cairo.cairo_show_text(cairo, buffer);
+            Cairo.cairo_new_path(cairo);
+            return;
+        }
+    }
+    setString(str, flags);
+    if (cairo !is null) {
+        if ((flags & SWT.DRAW_TRANSPARENT) is 0) {
+            checkGC(BACKGROUND);
+            int width, height;
+            OS.pango_layout_get_size(data.layout, &width, &height);
+            Cairo.cairo_rectangle(cairo, x, y, OS.PANGO_PIXELS(width), OS.PANGO_PIXELS(height));
+            Cairo.cairo_fill(cairo);
+        }
+        checkGC(FOREGROUND | FONT);
+        if ((data.style & SWT.MIRRORED) !is 0) {
+            Cairo.cairo_save(cairo);
+            int width, height;
+            OS.pango_layout_get_size(data.layout, &width, &height);
+            Cairo.cairo_scale(cairo, -1f,  1);
+            Cairo.cairo_translate(cairo, -2 * x - OS.PANGO_PIXELS(width), 0);
+        }
+        Cairo.cairo_move_to(cairo, x, y);
+        OS.pango_cairo_show_layout(cairo, data.layout);
+        if ((data.style & SWT.MIRRORED) !is 0) {
+            Cairo.cairo_restore(cairo);
+        }
+        Cairo.cairo_new_path(cairo);
+        return;
+    }
+    checkGC(FOREGROUND | FONT | BACKGROUND_BG);
+    GdkColor* background = null;
+    if ((flags & SWT.DRAW_TRANSPARENT) is 0) background = data.background;
+    if (!data.xorMode) {
+        OS.gdk_draw_layout_with_colors(data.drawable, handle, x, y, data.layout, null, background);
+    } else {
+        auto layout = data.layout;
+        int w, h;
+        OS.pango_layout_get_size(layout, &w, &h);
+        int width = OS.PANGO_PIXELS(w);
+        int height = OS.PANGO_PIXELS(h);
+        auto pixmap = OS.gdk_pixmap_new(cast(GdkDrawable*)OS.GDK_ROOT_PARENT(), width, height, -1);
+        if (pixmap is null) SWT.error(SWT.ERROR_NO_HANDLES);
+        auto gdkGC = OS.gdk_gc_new(cast(GdkDrawable*)pixmap);
+        if (gdkGC is null) SWT.error(SWT.ERROR_NO_HANDLES);
+        GdkColor* black = new GdkColor();
+        OS.gdk_gc_set_foreground(gdkGC, black);
+        OS.gdk_draw_rectangle(cast(GdkDrawable*)pixmap, gdkGC, 1, 0, 0, width, height);
+        OS.gdk_gc_set_foreground(gdkGC, data.foreground);
+        OS.gdk_draw_layout_with_colors(cast(GdkDrawable*)pixmap, gdkGC, 0, 0, layout, null, background);
+        OS.g_object_unref(gdkGC);
+        OS.gdk_draw_drawable(data.drawable, handle, cast(GdkDrawable*)pixmap, 0, 0, x, y, width, height);
+        OS.g_object_unref(pixmap);
+    }
+}
+
+/**
+ * Compares the argument to the receiver, and returns true
+ * if they represent the <em>same</em> object using a class
+ * specific comparison.
+ *
+ * @param object the object to compare with this object
+ * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
+ *
+ * @see #hashCode
+ */
+public override int opEquals(Object object) {
+    if (object is this) return true;
+    if ( auto gc = cast(GC)object){
+       return handle is gc.handle;
+    }
+    return false;
+}
+
+
+/**
+ * Fills the interior of a circular or elliptical arc within
+ * the specified rectangular area, with the receiver's background
+ * color.
+ * <p>
+ * The resulting arc begins at <code>startAngle</code> and extends
+ * for <code>arcAngle</code> degrees, using the current color.
+ * Angles are interpreted such that 0 degrees is at the 3 o'clock
+ * position. A positive value indicates a counter-clockwise rotation
+ * while a negative value indicates a clockwise rotation.
+ * </p><p>
+ * The center of the arc is the center of the rectangle whose origin
+ * is (<code>x</code>, <code>y</code>) and whose size is specified by the
+ * <code>width</code> and <code>height</code> arguments.
+ * </p><p>
+ * The resulting arc covers an area <code>width + 1</code> pixels wide
+ * by <code>height + 1</code> pixels tall.
+ * </p>
+ *
+ * @param x the x coordinate of the upper-left corner of the arc to be filled
+ * @param y the y coordinate of the upper-left corner of the arc to be filled
+ * @param width the width of the arc to be filled
+ * @param height the height of the arc to be filled
+ * @param startAngle the beginning angle
+ * @param arcAngle the angular extent of the arc, relative to the start angle
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #drawArc
+ */
+public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    checkGC(FILL);
+    if (width < 0) {
+        x = x + width;
+        width = -width;
+    }
+    if (height < 0) {
+        y = y + height;
+        height = -height;
+    }
+    if (width is 0 || height is 0 || arcAngle is 0) return;
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        if (width is height) {
+            if (arcAngle >= 0) {
+                Cairo.cairo_arc_negative(cairo, x + width / 2f, y + height / 2f, width / 2f, -startAngle * cast(float)Compatibility.PI / 180,  -(startAngle + arcAngle) * cast(float)Compatibility.PI / 180);
+            } else {
+                Cairo.cairo_arc(cairo, x + width / 2f, y + height / 2f, width / 2f, -startAngle * cast(float)Compatibility.PI / 180,  -(startAngle + arcAngle) * cast(float)Compatibility.PI / 180);
+            }
+            Cairo.cairo_line_to(cairo, x + width / 2f, y + height / 2f);
+        } else {
+            Cairo.cairo_save(cairo);
+            Cairo.cairo_translate(cairo, x + width / 2f, y + height / 2f);
+            Cairo.cairo_scale(cairo, width / 2f, height / 2f);
+            if (arcAngle >= 0) {
+                Cairo.cairo_arc_negative(cairo, 0, 0, 1, -startAngle * cast(float)Compatibility.PI / 180,  -(startAngle + arcAngle) * cast(float)Compatibility.PI / 180);
+            } else {
+                Cairo.cairo_arc(cairo, 0, 0, 1, -startAngle * cast(float)Compatibility.PI / 180,  -(startAngle + arcAngle) * cast(float)Compatibility.PI / 180);
+            }
+            Cairo.cairo_line_to(cairo, 0, 0);
+            Cairo.cairo_restore(cairo);
+        }
+        Cairo.cairo_fill(cairo);
+        return;
+    }
+    OS.gdk_draw_arc(data.drawable, handle, 1, x, y, width, height, startAngle * 64, arcAngle * 64);
+}
+
+/**
+ * Fills the interior of the specified rectangle with a gradient
+ * sweeping from left to right or top to bottom progressing
+ * from the receiver's foreground color to its background color.
+ *
+ * @param x the x coordinate of the rectangle to be filled
+ * @param y the y coordinate of the rectangle to be filled
+ * @param width the width of the rectangle to be filled, may be negative
+ *        (inverts direction of gradient if horizontal)
+ * @param height the height of the rectangle to be filled, may be negative
+ *        (inverts direction of gradient if vertical)
+ * @param vertical if true sweeps from top to bottom, else
+ *        sweeps from left to right
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #drawRectangle(int, int, int, int)
+ */
+public void fillGradientRectangle(int x, int y, int width, int height, bool vertical) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if ((width is 0) || (height is 0)) return;
+
+    /* Rewrite this to use GdkPixbuf */
+
+    RGB backgroundRGB, foregroundRGB;
+    backgroundRGB = getBackground().getRGB();
+    foregroundRGB = getForeground().getRGB();
+
+    RGB fromRGB, toRGB;
+    fromRGB = foregroundRGB;
+    toRGB   = backgroundRGB;
+    bool swapColors = false;
+    if (width < 0) {
+        x += width; width = -width;
+        if (! vertical) swapColors = true;
+    }
+    if (height < 0) {
+        y += height; height = -height;
+        if (vertical) swapColors = true;
+    }
+    if (swapColors) {
+        fromRGB = backgroundRGB;
+        toRGB   = foregroundRGB;
+    }
+    if (fromRGB.opEquals(toRGB)) {
+        fillRectangle(x, y, width, height);
+        return;
+    }
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        cairo_pattern_t* pattern;
+        if (vertical) {
+            pattern = Cairo.cairo_pattern_create_linear (0.0, 0.0, 0.0, 1.0);
+        } else {
+            pattern = Cairo.cairo_pattern_create_linear (0.0, 0.0, 1.0, 0.0);
+        }
+        Cairo.cairo_pattern_add_color_stop_rgba (pattern, 0, fromRGB.red / 255f, fromRGB.green / 255f, fromRGB.blue / 255f, data.alpha / 255f);
+        Cairo.cairo_pattern_add_color_stop_rgba (pattern, 1, toRGB.red / 255f, toRGB.green / 255f, toRGB.blue / 255f, data.alpha / 255f);
+        Cairo.cairo_save(cairo);
+        Cairo.cairo_translate(cairo, x, y);
+        Cairo.cairo_scale(cairo, width, height);
+        Cairo.cairo_rectangle(cairo, 0, 0, 1, 1);
+        Cairo.cairo_set_source(cairo, pattern);
+        Cairo.cairo_fill(cairo);
+        Cairo.cairo_restore(cairo);
+        Cairo.cairo_pattern_destroy(pattern);
+        return;
+    }
+    ImageData.fillGradientRectangle(this, data.device,
+        x, y, width, height, vertical, fromRGB, toRGB,
+        8, 8, 8);
+}
+
+/**
+ * Fills the interior of an oval, within the specified
+ * rectangular area, with the receiver's background
+ * color.
+ *
+ * @param x the x coordinate of the upper left corner of the oval to be filled
+ * @param y the y coordinate of the upper left corner of the oval to be filled
+ * @param width the width of the oval to be filled
+ * @param height the height of the oval to be filled
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #drawOval
+ */
+public void fillOval(int x, int y, int width, int height) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    checkGC(FILL);
+    if (width < 0) {
+        x = x + width;
+        width = -width;
+    }
+    if (height < 0) {
+        y = y + height;
+        height = -height;
+    }
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        if (width is height) {
+            Cairo.cairo_arc_negative(cairo, x + width / 2f, y + height / 2f, width / 2f, 0, 2 * cast(float)Compatibility.PI);
+        } else {
+            Cairo.cairo_save(cairo);
+            Cairo.cairo_translate(cairo, x + width / 2f, y + height / 2f);
+            Cairo.cairo_scale(cairo, width / 2f, height / 2f);
+            Cairo.cairo_arc_negative(cairo, 0, 0, 1, 0, 2 * cast(float)Compatibility.PI);
+            Cairo.cairo_restore(cairo);
+        }
+        Cairo.cairo_fill(cairo);
+        return;
+    }
+    OS.gdk_draw_arc(data.drawable, handle, 1, x, y, width, height, 0, 23040);
+}
+
+/**
+ * Fills the path described by the parameter.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param path the path to fill
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parameter is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see Path
+ *
+ * @since 3.1
+ */
+public void fillPath (Path path) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (path is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (path.handle is null) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    initCairo();
+    checkGC(FILL);
+    auto cairo = data.cairo;
+    auto copy = Cairo.cairo_copy_path(path.handle);
+    if (copy is null) SWT.error(SWT.ERROR_NO_HANDLES);
+    Cairo.cairo_append_path(cairo, copy);
+    Cairo.cairo_path_destroy(copy);
+    Cairo.cairo_fill(cairo);
+}
+
+/**
+ * Fills the interior of the closed polygon which is defined by the
+ * specified array of integer coordinates, using the receiver's
+ * background color. The array contains alternating x and y values
+ * which are considered to represent points which are the vertices of
+ * the polygon. Lines are drawn between each consecutive pair, and
+ * between the first pair and last pair in the array.
+ *
+ * @param pointArray an array of alternating x and y values which are the vertices of the polygon
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #drawPolygon
+ */
+public void fillPolygon(int[] pointArray) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    // SWT extension: allow null array
+    //if (pointArray is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    checkGC(FILL);
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        drawPolyline(cairo, pointArray, true);
+        Cairo.cairo_fill(cairo);
+        return;
+    }
+    OS.gdk_draw_polygon(data.drawable, handle, 1, cast(GdkPoint*)pointArray.ptr, pointArray.length / 2);
+}
+
+/**
+ * Fills the interior of the rectangle specified by the arguments,
+ * using the receiver's background color.
+ *
+ * @param x the x coordinate of the rectangle to be filled
+ * @param y the y coordinate of the rectangle to be filled
+ * @param width the width of the rectangle to be filled
+ * @param height the height of the rectangle to be filled
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #drawRectangle(int, int, int, int)
+ */
+public void fillRectangle(int x, int y, int width, int height) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    checkGC(FILL);
+    if (width < 0) {
+        x = x + width;
+        width = -width;
+    }
+    if (height < 0) {
+        y = y + height;
+        height = -height;
+    }
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        Cairo.cairo_rectangle(cairo, x, y, width, height);
+        Cairo.cairo_fill(cairo);
+        return;
+    }
+    OS.gdk_draw_rectangle(data.drawable, handle, 1, x, y, width, height);
+}
+
+/**
+ * Fills the interior of the specified rectangle, using the receiver's
+ * background color.
+ *
+ * @param rect the rectangle to be filled
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #drawRectangle(int, int, int, int)
+ */
+public void fillRectangle(Rectangle rect) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (rect is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    fillRectangle(rect.x, rect.y, rect.width, rect.height);
+}
+
+/**
+ * Fills the interior of the round-cornered rectangle specified by
+ * the arguments, using the receiver's background color.
+ *
+ * @param x the x coordinate of the rectangle to be filled
+ * @param y the y coordinate of the rectangle to be filled
+ * @param width the width of the rectangle to be filled
+ * @param height the height of the rectangle to be filled
+ * @param arcWidth the width of the arc
+ * @param arcHeight the height of the arc
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #drawRoundRectangle
+ */
+public void fillRoundRectangle(int x, int y, int width, int height, int arcWidth, int arcHeight) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    checkGC(FILL);
+    int nx = x;
+    int ny = y;
+    int nw = width;
+    int nh = height;
+    int naw = arcWidth;
+    int nah = arcHeight;
+    if (nw < 0) {
+        nw = 0 - nw;
+        nx = nx - nw;
+    }
+    if (nh < 0) {
+        nh = 0 - nh;
+        ny = ny -nh;
+    }
+    if (naw < 0) naw = 0 - naw;
+    if (nah < 0) nah = 0 - nah;
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        if (naw is 0 || nah is 0) {
+            Cairo.cairo_rectangle(cairo, x, y, width, height);
+        } else {
+            float naw2 = naw / 2f;
+            float nah2 = nah / 2f;
+            float fw = nw / naw2;
+            float fh = nh / nah2;
+            Cairo.cairo_save(cairo);
+            Cairo.cairo_translate(cairo, nx, ny);
+            Cairo.cairo_scale(cairo, naw2, nah2);
+            Cairo.cairo_move_to(cairo, fw - 1, 0);
+            Cairo.cairo_arc(cairo, fw - 1, 1, 1, Compatibility.PI + Compatibility.PI/2.0, Compatibility.PI*2.0);
+            Cairo.cairo_arc(cairo, fw - 1, fh - 1, 1, 0, Compatibility.PI/2.0);
+            Cairo.cairo_arc(cairo, 1, fh - 1, 1, Compatibility.PI/2, Compatibility.PI);
+            Cairo.cairo_arc(cairo, 1, 1, 1, Compatibility.PI, 270.0*Compatibility.PI/180.0);
+            Cairo.cairo_close_path(cairo);
+            Cairo.cairo_restore(cairo);
+        }
+        Cairo.cairo_fill(cairo);
+        return;
+    }
+    int naw2 = naw / 2;
+    int nah2 = nah / 2;
+    auto drawable = data.drawable;
+    if (nw > naw) {
+        if (nh > nah) {
+            OS.gdk_draw_arc(drawable, handle, 1, nx, ny, naw, nah, 5760, 5760);
+            OS.gdk_draw_rectangle(drawable, handle, 1, nx + naw2, ny, nw - naw2 * 2, nh);
+            OS.gdk_draw_arc(drawable, handle, 1, nx + nw - naw, ny, naw, nah, 0, 5760);
+            OS.gdk_draw_rectangle(drawable, handle, 1, nx, ny + nah2, naw2, nh - nah2 * 2);
+            OS.gdk_draw_arc(drawable, handle, 1, nx + nw - naw, ny + nh - nah, naw, nah, 17280, 5760);
+            OS.gdk_draw_rectangle(drawable, handle, 1, nx + nw - naw2, ny + nah2, naw2, nh - nah2 * 2);
+            OS.gdk_draw_arc(drawable, handle, 1, nx, ny + nh - nah, naw, nah, 11520, 5760);
+        } else {
+            OS.gdk_draw_arc(drawable, handle, 1, nx, ny, naw, nh, 5760, 11520);
+            OS.gdk_draw_rectangle(drawable, handle, 1, nx + naw2, ny, nw - naw2 * 2, nh);
+            OS.gdk_draw_arc(drawable, handle, 1, nx + nw - naw, ny, naw, nh, 17280, 11520);
+        }
+    } else {
+        if (nh > nah) {
+            OS.gdk_draw_arc(drawable, handle, 1, nx, ny, nw, nah, 0, 11520);
+            OS.gdk_draw_rectangle(drawable, handle, 1, nx, ny + nah2, nw, nh - nah2 * 2);
+            OS.gdk_draw_arc(drawable, handle, 1, nx, ny + nh - nah, nw, nah, 11520, 11520);
+        } else {
+            OS.gdk_draw_arc(drawable, handle, 1, nx, ny, nw, nh, 0, 23040);
+        }
+    }
+}
+
+int fixMnemonic (char [] buffer) {
+    int i=0, j=0;
+    int mnemonic=-1;
+    while (i < buffer.length) {
+        if ((buffer [j++] = buffer [i++]) is '&') {
+            if (i is buffer.length) {continue;}
+            if (buffer [i] is '&') {i++; continue;}
+            if (mnemonic is -1) mnemonic = j;
+            j--;
+        }
+    }
+    while (j < buffer.length) buffer [j++] = 0;
+    return mnemonic;
+}
+
+/**
+ * Returns the <em>advance width</em> of the specified character in
+ * the font which is currently selected into the receiver.
+ * <p>
+ * The advance width is defined as the horizontal distance the cursor
+ * should move after printing the character in the selected font.
+ * </p>
+ *
+ * @param ch the character to measure
+ * @return the distance in the x direction to move past the character before painting the next
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public int getAdvanceWidth(char ch) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    //BOGUS
+    return stringExtent([ch]).x;
+}
+
+/**
+ * Returns <code>true</code> if receiver is using the operating system's
+ * advanced graphics subsystem.  Otherwise, <code>false</code> is returned
+ * to indicate that normal graphics are in use.
+ * <p>
+ * Advanced graphics may not be installed for the operating system.  In this
+ * case, <code>false</code> is always returned.  Some operating system have
+ * only one graphics subsystem.  If this subsystem supports advanced graphics,
+ * then <code>true</code> is always returned.  If any graphics operation such
+ * as alpha, antialias, patterns, interpolation, paths, clipping or transformation
+ * has caused the receiver to switch from regular to advanced graphics mode,
+ * <code>true</code> is returned.  If the receiver has been explicitly switched
+ * to advanced mode and this mode is supported, <code>true</code> is returned.
+ * </p>
+ *
+ * @return the advanced value
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #setAdvanced
+ *
+ * @since 3.1
+ */
+public bool getAdvanced() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.cairo !is null;
+}
+
+/**
+ * Returns the receiver's alpha value. The alpha value
+ * is between 0 (transparent) and 255 (opaque).
+ *
+ * @return the alpha value
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public int getAlpha() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.alpha;
+}
+
+/**
+ * Returns the receiver's anti-aliasing setting value, which will be
+ * one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> or
+ * <code>SWT.ON</code>. Note that this controls anti-aliasing for all
+ * <em>non-text drawing</em> operations.
+ *
+ * @return the anti-aliasing setting
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #getTextAntialias
+ *
+ * @since 3.1
+ */
+public int getAntialias() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.cairo is null) return SWT.DEFAULT;
+    int antialias = Cairo.cairo_get_antialias(data.cairo);
+    switch (antialias) {
+        case Cairo.CAIRO_ANTIALIAS_DEFAULT: return SWT.DEFAULT;
+        case Cairo.CAIRO_ANTIALIAS_NONE: return SWT.OFF;
+        case Cairo.CAIRO_ANTIALIAS_GRAY:
+        case Cairo.CAIRO_ANTIALIAS_SUBPIXEL: return SWT.ON;
+                default:
+    }
+    return SWT.DEFAULT;
+}
+
+/**
+ * Returns the background color.
+ *
+ * @return the receiver's background color
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Color getBackground() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return Color.gtk_new(data.device, data.background);
+}
+
+/**
+ * Returns the background pattern. The default value is
+ * <code>null</code>.
+ *
+ * @return the receiver's background pattern
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see Pattern
+ *
+ * @since 3.1
+ */
+public Pattern getBackgroundPattern() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.backgroundPattern;
+}
+
+/**
+ * Returns the width of the specified character in the font
+ * selected into the receiver.
+ * <p>
+ * The width is defined as the space taken up by the actual
+ * character, not including the leading and tailing whitespace
+ * or overhang.
+ * </p>
+ *
+ * @param ch the character to measure
+ * @return the width of the character
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public int getCharWidth(char ch) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    //BOGUS
+    return stringExtent([ch]).x;
+}
+
+/**
+ * Returns the bounding rectangle of the receiver's clipping
+ * region. If no clipping region is set, the return value
+ * will be a rectangle which covers the entire bounds of the
+ * object the receiver is drawing on.
+ *
+ * @return the bounding rectangle of the clipping region
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Rectangle getClipping() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    /* Calculate visible bounds in device space */
+    int x = 0, y = 0, width = 0, height = 0;
+    if (data.width !is -1 && data.height !is -1) {
+        width = data.width;
+        height = data.height;
+    } else {
+        int w, h;
+        OS.gdk_drawable_get_size(data.drawable, &w, &h);
+        width = w;
+        height = h;
+    }
+    /* Intersect visible bounds with clipping in device space and then convert then to user space */
+    auto cairo = data.cairo;
+    auto clipRgn = data.clipRgn;
+    auto damageRgn = data.damageRgn;
+    if (clipRgn !is null || damageRgn !is null || cairo !is null) {
+        auto rgn = OS.gdk_region_new();
+        GdkRectangle rect;
+        rect.width = width;
+        rect.height = height;
+        OS.gdk_region_union_with_rect(rgn, &rect);
+        if (damageRgn !is null) {
+            OS.gdk_region_intersect (rgn, damageRgn);
+        }
+        /* Intersect visible bounds with clipping */
+        if (clipRgn !is null) {
+            /* Convert clipping to device space if needed */
+            if (data.clippingTransform !is null) {
+                clipRgn = convertRgn(clipRgn, data.clippingTransform);
+                OS.gdk_region_intersect(rgn, clipRgn);
+                OS.gdk_region_destroy(clipRgn);
+            } else {
+                OS.gdk_region_intersect(rgn, clipRgn);
+            }
+        }
+        /* Convert to user space */
+        if (cairo !is null) {
+            double[] matrix = new double[6];
+            Cairo.cairo_get_matrix(cairo, cast(cairo_matrix_t*)matrix.ptr);
+            Cairo.cairo_matrix_invert(cast(cairo_matrix_t*)matrix.ptr);
+            clipRgn = convertRgn(rgn, matrix);
+            OS.gdk_region_destroy(rgn);
+            rgn = clipRgn;
+        }
+        OS.gdk_region_get_clipbox(rgn, &rect);
+        OS.gdk_region_destroy(rgn);
+        x = rect.x;
+        y = rect.y;
+        width = rect.width;
+        height = rect.height;
+    }
+    return new Rectangle(x, y, width, height);
+}
+
+/**
+ * Sets the region managed by the argument to the current
+ * clipping region of the receiver.
+ *
+ * @param region the region to fill with the clipping region
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the region is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the region is disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void getClipping(Region region) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (region is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    auto clipping = region.handle;
+    OS.gdk_region_subtract(clipping, clipping);
+    auto cairo = data.cairo;
+    auto clipRgn = data.clipRgn;
+    if (clipRgn is null) {
+        GdkRectangle rect;
+        if (data.width !is -1 && data.height !is -1) {
+            rect.width = data.width;
+            rect.height = data.height;
+        } else {
+            int width, height;
+            OS.gdk_drawable_get_size(data.drawable, &width, &height);
+            rect.width = width;
+            rect.height = height;
+        }
+        OS.gdk_region_union_with_rect(clipping, &rect);
+    } else {
+        /* Convert clipping to device space if needed */
+        if (data.clippingTransform !is null) {
+            auto rgn = convertRgn(clipRgn, data.clippingTransform);
+            OS.gdk_region_union(clipping, rgn);
+            OS.gdk_region_destroy(rgn);
+        } else {
+            OS.gdk_region_union(clipping, clipRgn);
+        }
+    }
+    if (data.damageRgn !is null) {
+        OS.gdk_region_intersect(clipping, data.damageRgn);
+    }
+    /* Convert to user space */
+    if (cairo !is null) {
+        double[] matrix = new double[6];
+        Cairo.cairo_get_matrix(cairo, cast(cairo_matrix_t*)matrix.ptr);
+        Cairo.cairo_matrix_invert(cast(cairo_matrix_t*)matrix.ptr);
+        auto rgn = convertRgn(clipping, matrix);
+        OS.gdk_region_subtract(clipping, clipping);
+        OS.gdk_region_union(clipping, rgn);
+        OS.gdk_region_destroy(rgn);
+    }
+}
+
+/**
+ * Returns the receiver's fill rule, which will be one of
+ * <code>SWT.FILL_EVEN_ODD</code> or <code>SWT.FILL_WINDING</code>.
+ *
+ * @return the receiver's fill rule
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public int getFillRule() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    auto cairo = data.cairo;
+    if (cairo is null) return SWT.FILL_EVEN_ODD;
+    return Cairo.cairo_get_fill_rule(cairo) is Cairo.CAIRO_FILL_RULE_WINDING ? SWT.FILL_WINDING : SWT.FILL_EVEN_ODD;
+}
+
+/**
+ * Returns the font currently being used by the receiver
+ * to draw and measure text.
+ *
+ * @return the receiver's font
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Font getFont() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.font;
+}
+
+/**
+ * Returns a FontMetrics which contains information
+ * about the font currently being used by the receiver
+ * to draw and measure text.
+ *
+ * @return font metrics for the receiver's font
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public FontMetrics getFontMetrics() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.context is null) createLayout();
+    checkGC(FONT);
+    Font font = data.font;
+    auto context = data.context;
+    auto lang = OS.pango_context_get_language(context);
+    auto metrics = OS.pango_context_get_metrics(context, font.handle, lang);
+    FontMetrics fm = new FontMetrics();
+    fm.ascent = OS.PANGO_PIXELS(OS.pango_font_metrics_get_ascent(metrics));
+    fm.descent = OS.PANGO_PIXELS(OS.pango_font_metrics_get_descent(metrics));
+    fm.averageCharWidth = OS.PANGO_PIXELS(OS.pango_font_metrics_get_approximate_char_width(metrics));
+    fm.height = fm.ascent + fm.descent;
+    OS.pango_font_metrics_unref(metrics);
+    return fm;
+}
+
+/**
+ * Returns the receiver's foreground color.
+ *
+ * @return the color used for drawing foreground things
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Color getForeground() {
+    if (handle is null) SWT.error(SWT.ERROR_WIDGET_DISPOSED);
+    return Color.gtk_new(data.device, data.foreground);
+}
+
+/**
+ * Returns the foreground pattern. The default value is
+ * <code>null</code>.
+ *
+ * @return the receiver's foreground pattern
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see Pattern
+ *
+ * @since 3.1
+ */
+public Pattern getForegroundPattern() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.foregroundPattern;
+}
+
+/**
+ * Returns the GCData.
+ * <p>
+ * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
+ * API for <code>GC</code>. It is marked public only so that it
+ * can be shared within the packages provided by SWT. It is not
+ * available on all platforms, and should never be called from
+ * application code.
+ * </p>
+ *
+ * @return the receiver's GCData
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see GCData
+ *
+ * @since 3.2
+ */
+public GCData getGCData() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data;
+}
+
+/**
+ * Returns the receiver's interpolation setting, which will be one of
+ * <code>SWT.DEFAULT</code>, <code>SWT.NONE</code>,
+ * <code>SWT.LOW</code> or <code>SWT.HIGH</code>.
+ *
+ * @return the receiver's interpolation setting
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public int getInterpolation() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.interpolation;
+}
+
+/**
+ * Returns the receiver's line attributes.
+ *
+ * @return the line attributes used for drawing lines
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.3
+ */
+public LineAttributes getLineAttributes() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    float[] dashes = null;
+    if (data.lineDashes !is null) {
+        dashes = new float[data.lineDashes.length];
+        System.arraycopy(data.lineDashes, 0, dashes, 0, dashes.length);
+    }
+    return new LineAttributes(data.lineWidth, data.lineCap, data.lineJoin, data.lineStyle, dashes, data.lineDashesOffset, data.lineMiterLimit);
+}
+
+/**
+ * Returns the receiver's line cap style, which will be one
+ * of the constants <code>SWT.CAP_FLAT</code>, <code>SWT.CAP_ROUND</code>,
+ * or <code>SWT.CAP_SQUARE</code>.
+ *
+ * @return the cap style used for drawing lines
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public int getLineCap() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.lineCap;
+}
+
+/**
+ * Returns the receiver's line dash style. The default value is
+ * <code>null</code>.
+ *
+ * @return the line dash style used for drawing lines
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public int[] getLineDash() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.lineDashes is null) return null;
+    int[] lineDashes = new int[data.lineDashes.length];
+    for (int i = 0; i < lineDashes.length; i++) {
+        lineDashes[i] = cast(int)data.lineDashes[i];
+    }
+    return lineDashes;
+}
+
+/**
+ * Returns the receiver's line join style, which will be one
+ * of the constants <code>SWT.JOIN_MITER</code>, <code>SWT.JOIN_ROUND</code>,
+ * or <code>SWT.JOIN_BEVEL</code>.
+ *
+ * @return the join style used for drawing lines
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public int getLineJoin() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.lineJoin;
+}
+
+/**
+ * Returns the receiver's line style, which will be one
+ * of the constants <code>SWT.LINE_SOLID</code>, <code>SWT.LINE_DASH</code>,
+ * <code>SWT.LINE_DOT</code>, <code>SWT.LINE_DASHDOT</code> or
+ * <code>SWT.LINE_DASHDOTDOT</code>.
+ *
+ * @return the style used for drawing lines
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public int getLineStyle() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.lineStyle;
+}
+
+/**
+ * Returns the width that will be used when drawing lines
+ * for all of the figure drawing operations (that is,
+ * <code>drawLine</code>, <code>drawRectangle</code>,
+ * <code>drawPolyline</code>, and so forth.
+ *
+ * @return the receiver's line width
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public int getLineWidth() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return cast(int)data.lineWidth;
+}
+
+/**
+ * Returns the receiver's style information.
+ * <p>
+ * Note that the value which is returned by this method <em>may
+ * not match</em> the value which was provided to the constructor
+ * when the receiver was created. This can occur when the underlying
+ * operating system does not support a particular combination of
+ * requested styles.
+ * </p>
+ *
+ * @return the style bits
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+public int getStyle () {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.style;
+}
+
+/**
+ * Returns the receiver's text drawing anti-aliasing setting value,
+ * which will be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> or
+ * <code>SWT.ON</code>. Note that this controls anti-aliasing
+ * <em>only</em> for text drawing operations.
+ *
+ * @return the anti-aliasing setting
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #getAntialias
+ *
+ * @since 3.1
+ */
+public int getTextAntialias() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.cairo is null) return SWT.DEFAULT;
+    int antialias = Cairo.CAIRO_ANTIALIAS_DEFAULT;
+    if (OS.GTK_VERSION < OS.buildVERSION(2, 8, 0)) {
+        auto options = Cairo.cairo_font_options_create();
+        Cairo.cairo_get_font_options(data.cairo, options);
+        antialias = Cairo.cairo_font_options_get_antialias(options);
+        Cairo.cairo_font_options_destroy(options);
+    } else {
+        if (data.context !is null) {
+            auto options = OS.pango_cairo_context_get_font_options(data.context);
+            if (options !is null) antialias = Cairo.cairo_font_options_get_antialias(options);
+        }
+    }
+    switch (antialias) {
+        case Cairo.CAIRO_ANTIALIAS_DEFAULT: return SWT.DEFAULT;
+        case Cairo.CAIRO_ANTIALIAS_NONE: return SWT.OFF;
+        case Cairo.CAIRO_ANTIALIAS_GRAY:
+        case Cairo.CAIRO_ANTIALIAS_SUBPIXEL: return SWT.ON;
+                default:
+    }
+    return SWT.DEFAULT;
+}
+
+/**
+ * Sets the parameter to the transform that is currently being
+ * used by the receiver.
+ *
+ * @param transform the destination to copy the transform into
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parameter is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see Transform
+ *
+ * @since 3.1
+ */
+public void getTransform(Transform transform) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (transform is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        Cairo.cairo_get_matrix(cairo, cast(cairo_matrix_t*)transform.handle.ptr);
+        double[] identity = identity();
+        Cairo.cairo_matrix_invert(cast(cairo_matrix_t*)identity.ptr);
+        Cairo.cairo_matrix_multiply(cast(cairo_matrix_t*)transform.handle.ptr, cast(cairo_matrix_t*)transform.handle.ptr, cast(cairo_matrix_t*)identity.ptr);
+    } else {
+        transform.setElements(1, 0, 0, 1, 0, 0);
+    }
+}
+
+/**
+ * Returns <code>true</code> if this GC is drawing in the mode
+ * where the resulting color in the destination is the
+ * <em>exclusive or</em> of the color values in the source
+ * and the destination, and <code>false</code> if it is
+ * drawing in the mode where the destination color is being
+ * replaced with the source color value.
+ *
+ * @return <code>true</code> true if the receiver is in XOR mode, and false otherwise
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public bool getXORMode() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.xorMode;
+}
+
+/**
+ * Returns an integer hash code for the receiver. Any two
+ * objects that return <code>true</code> when passed to
+ * <code>equals</code> must return the same value for this
+ * method.
+ *
+ * @return the receiver's hash
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #equals
+ */
+public override hash_t toHash() {
+    return cast(hash_t)/*64*/handle;
+}
+
+double[] identity() {
+    double[] identity = new double[6];
+    if ((data.style & SWT.MIRRORED) !is 0) {
+        int w, h;
+        OS.gdk_drawable_get_size(data.drawable, &w, &h);
+        Cairo.cairo_matrix_init(cast(cairo_matrix_t*)identity.ptr, -1, 0, 0, 1, w, 0);
+    } else {
+        Cairo.cairo_matrix_init_identity(cast(cairo_matrix_t*)identity.ptr);
+    }
+    return identity;
+}
+
+void init_(Drawable drawable, GCData data, GdkGC* gdkGC) {
+    if (data.foreground !is null) data.state &= ~FOREGROUND;
+    if (data.background !is null) data.state &= ~(BACKGROUND | BACKGROUND_BG);
+    if (data.font !is null) data.state &= ~FONT;
+
+    Image image = data.image;
+    if (image !is null) {
+        image.memGC = this;
+        /*
+         * The transparent pixel mask might change when drawing on
+         * the image.  Destroy it so that it is regenerated when
+         * necessary.
+         */
+        if (image.transparentPixel !is -1) image.destroyMask();
+    }
+    this.drawable = drawable;
+    this.data = data;
+    handle = gdkGC;
+    if ((data.style & SWT.MIRRORED) !is 0) {
+      initCairo();
+      auto cairo = data.cairo;
+      Cairo.cairo_set_matrix(cairo, cast(cairo_matrix_t*) identity().ptr);
+    }
+}
+
+void initCairo() {
+    data.device.checkCairo();
+    auto cairo = data.cairo;
+    if (cairo !is null) return;
+    auto xDisplay = OS.GDK_DISPLAY();
+    auto xVisual = OS.gdk_x11_visual_get_xvisual(OS.gdk_visual_get_system());
+    uint xDrawable;
+    int translateX = 0, translateY = 0;
+    auto drawable = data.drawable;
+    if (data.image !is null) {
+        xDrawable = OS.GDK_PIXMAP_XID(drawable);
+    } else {
+        if (!data.realDrawable) {
+            int x, y;
+            GdkDrawable* real_drawable;
+            OS.gdk_window_get_internal_paint_info(cast(GdkWindow*)drawable, &real_drawable, &x, &y);
+            xDrawable = OS.gdk_x11_drawable_get_xid(real_drawable);
+            translateX = -x;
+            translateY = -y;
+        }
+    }
+    int w, h;
+    OS.gdk_drawable_get_size(drawable, &w, &h);
+    int width = w, height = h;
+    auto surface = Cairo.cairo_xlib_surface_create(cast(void*)xDisplay, xDrawable, xVisual, width, height);
+    if (surface is null) SWT.error(SWT.ERROR_NO_HANDLES);
+    Cairo.cairo_surface_set_device_offset(surface, translateX, translateY);
+    data.cairo = cairo = Cairo.cairo_create(surface);
+    Cairo.cairo_surface_destroy(surface);
+    if (cairo is null) SWT.error(SWT.ERROR_NO_HANDLES);
+    data.disposeCairo = true;
+    Cairo.cairo_set_fill_rule(cairo, Cairo.CAIRO_FILL_RULE_EVEN_ODD);
+    data.state &= ~(BACKGROUND | FOREGROUND | FONT | LINE_WIDTH | LINE_CAP | LINE_JOIN | LINE_STYLE | DRAW_OFFSET);
+    setCairoClip(cairo, data.clipRgn);
+}
+
+/**
+ * Returns <code>true</code> if the receiver has a clipping
+ * region set into it, and <code>false</code> otherwise.
+ * If this method returns false, the receiver will draw on all
+ * available space in the destination. If it returns true,
+ * it will draw only in the area that is covered by the region
+ * that can be accessed with <code>getClipping(region)</code>.
+ *
+ * @return <code>true</code> if the GC has a clipping region, and <code>false</code> otherwise
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public bool isClipped() {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    return data.clipRgn !is null;
+}
+
+/**
+ * Returns <code>true</code> if the GC has been disposed,
+ * and <code>false</code> otherwise.
+ * <p>
+ * This method gets the dispose state for the GC.
+ * When a GC has been disposed, it is an error to
+ * invoke any other method using the GC.
+ *
+ * @return <code>true</code> when the GC is disposed and <code>false</code> otherwise
+ */
+public override bool isDisposed() {
+    return handle is null;
+}
+
+bool isIdentity(double[] matrix) {
+    if (matrix is null) return true;
+    return matrix[0] is 1 && matrix[1] is 0 && matrix[2] is 0 && matrix[3] is 1 && matrix[4] is 0 && matrix[5] is 0;
+}
+
+/**
+ * Sets the receiver to always use the operating system's advanced graphics
+ * subsystem for all graphics operations if the argument is <code>true</code>.
+ * If the argument is <code>false</code>, the advanced graphics subsystem is
+ * no longer used, advanced graphics state is cleared and the normal graphics
+ * subsystem is used from now on.
+ * <p>
+ * Normally, the advanced graphics subsystem is invoked automatically when
+ * any one of the alpha, antialias, patterns, interpolation, paths, clipping
+ * or transformation operations in the receiver is requested.  When the receiver
+ * is switched into advanced mode, the advanced graphics subsystem performs both
+ * advanced and normal graphics operations.  Because the two subsystems are
+ * different, their output may differ.  Switching to advanced graphics before
+ * any graphics operations are performed ensures that the output is consistent.
+ * </p><p>
+ * Advanced graphics may not be installed for the operating system.  In this
+ * case, this operation does nothing.  Some operating system have only one
+ * graphics subsystem, so switching from normal to advanced graphics does
+ * nothing.  However, switching from advanced to normal graphics will always
+ * clear the advanced graphics state, even for operating systems that have
+ * only one graphics subsystem.
+ * </p>
+ *
+ * @param advanced the new advanced graphics state
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #setAlpha
+ * @see #setAntialias
+ * @see #setBackgroundPattern
+ * @see #setClipping(Path)
+ * @see #setForegroundPattern
+ * @see #setLineAttributes
+ * @see #setInterpolation
+ * @see #setTextAntialias
+ * @see #setTransform
+ * @see #getAdvanced
+ *
+ * @since 3.1
+ */
+public void setAdvanced(bool advanced) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if ((data.style & SWT.MIRRORED) !is 0) {
+        if (!advanced) {
+            setAlpha(0xFF);
+            setAntialias(SWT.DEFAULT);
+            setBackgroundPattern(null);
+            setClipping(cast(GdkRegion*)null);
+            setForegroundPattern(null);
+            setInterpolation(SWT.DEFAULT);
+            setTextAntialias(SWT.DEFAULT);
+            setTransform(null);
+        }
+        return;
+    }
+    if (advanced && data.cairo !is null) return;
+    if (advanced) {
+        try {
+            initCairo();
+        } catch (SWTException e) {}
+    } else {
+        if (!data.disposeCairo) return;
+        auto cairo = data.cairo;
+        if (cairo !is null) Cairo.cairo_destroy(cairo);
+        data.cairo = null;
+        data.interpolation = SWT.DEFAULT;
+        data.backgroundPattern = data.foregroundPattern = null;
+        data.state = 0;
+        setClipping(cast(GdkRegion*)null);
+    }
+}
+
+/**
+ * Sets the receiver's alpha value which must be
+ * between 0 (transparent) and 255 (opaque).
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ * @param alpha the alpha value
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see #getAdvanced
+ * @see #setAdvanced
+ *
+ * @since 3.1
+ */
+public void setAlpha(int alpha) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.cairo is null && (alpha & 0xff) is 0xff) return;
+    initCairo();
+    data.alpha = alpha & 0xff;
+    data.state &= ~(BACKGROUND | FOREGROUND | BACKGROUND_BG);
+}
+
+/**
+ * Sets the receiver's anti-aliasing value to the parameter,
+ * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code>
+ * or <code>SWT.ON</code>. Note that this controls anti-aliasing for all
+ * <em>non-text drawing</em> operations.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param antialias the anti-aliasing setting
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the parameter is not one of <code>SWT.DEFAULT</code>,
+ *                                 <code>SWT.OFF</code> or <code>SWT.ON</code></li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see #getAdvanced
+ * @see #setAdvanced
+ * @see #setTextAntialias
+ *
+ * @since 3.1
+ */
+public void setAntialias(int antialias) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.cairo is null && antialias is SWT.DEFAULT) return;
+    int mode = 0;
+    switch (antialias) {
+        case SWT.DEFAULT: mode = Cairo.CAIRO_ANTIALIAS_DEFAULT; break;
+        case SWT.OFF: mode = Cairo.CAIRO_ANTIALIAS_NONE; break;
+        case SWT.ON: mode = Cairo.CAIRO_ANTIALIAS_GRAY;
+            break;
+        default:
+            SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    }
+    initCairo();
+    auto cairo = data.cairo;
+    Cairo.cairo_set_antialias(cairo, mode);
+}
+
+/**
+ * Sets the background color. The background color is used
+ * for fill operations and as the background color when text
+ * is drawn.
+ *
+ * @param color the new background color for the receiver
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the color is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the color has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void setBackground(Color color) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (color is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    data.background = color.handle;
+    data.backgroundPattern = null;
+    data.state &= ~(BACKGROUND | BACKGROUND_BG);
+}
+
+/**
+ * Sets the background pattern. The default value is <code>null</code>.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param pattern the new background pattern
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see Pattern
+ * @see #getAdvanced
+ * @see #setAdvanced
+ *
+ * @since 3.1
+ */
+public void setBackgroundPattern(Pattern pattern) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (pattern !is null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    if (data.cairo is null && pattern is null) return;
+    initCairo();
+    if (data.backgroundPattern is pattern) return;
+    data.backgroundPattern = pattern;
+    data.state &= ~BACKGROUND;
+}
+
+static void setCairoFont(cairo_t* cairo, Font font) {
+    setCairoFont(cairo, font.handle);
+}
+
+static void setCairoFont(cairo_t* cairo, PangoFontDescription* font) {
+    auto family = OS.pango_font_description_get_family(font);
+    int len = /*OS.*/strlen(family);
+    String buffer = new char[len + 1];
+    memmove(buffer.ptr, family, len);
+    //TODO - convert font height from pango to cairo
+    double height = OS.PANGO_PIXELS(OS.pango_font_description_get_size(font)) * 96 / 72;
+    int pangoStyle = OS.pango_font_description_get_style(font);
+    int pangoWeight = OS.pango_font_description_get_weight(font);
+    int slant = Cairo.CAIRO_FONT_SLANT_NORMAL;
+    if (pangoStyle is OS.PANGO_STYLE_ITALIC) slant = Cairo.CAIRO_FONT_SLANT_ITALIC;
+    if (pangoStyle is OS.PANGO_STYLE_OBLIQUE) slant = Cairo.CAIRO_FONT_SLANT_OBLIQUE;
+    int weight = Cairo.CAIRO_FONT_WEIGHT_NORMAL;
+    if (pangoWeight is OS.PANGO_WEIGHT_BOLD) weight = Cairo.CAIRO_FONT_WEIGHT_BOLD;
+    Cairo.cairo_select_font_face(cairo, buffer.ptr, slant, weight);
+    Cairo.cairo_set_font_size(cairo, height);
+}
+
+static void setCairoClip(cairo_t* cairo, GdkRegion* clipRgn) {
+    Cairo.cairo_reset_clip(cairo);
+    if (clipRgn is null) return;
+    if (OS.GTK_VERSION >= OS.buildVERSION(2, 8, 0)) {
+        OS.gdk_cairo_region(cairo, clipRgn);
+    } else {
+        int nRects;
+        GdkRectangle * rects;
+        OS.gdk_region_get_rectangles(clipRgn, &rects, &nRects);
+        //GdkRectangle* rect = new GdkRectangle();
+        for (int i=0; i<nRects; i++) {
+            Cairo.cairo_rectangle(cairo, rects[i].x, rects[i].y, rects[i].width, rects[i].height);
+        }
+        if (rects !is null) OS.g_free(rects);
+    }
+    Cairo.cairo_clip(cairo);
+}
+
+static void setCairoPatternColor( cairo_pattern_t* pattern, int offset, Color c, int alpha) {
+    GdkColor* color = c.handle;
+    double aa = (alpha & 0xFF) / cast(double)0xFF;
+    double red = ((color.red & 0xFFFF) / cast(double)0xFFFF);
+    double green = ((color.green & 0xFFFF) / cast(double)0xFFFF);
+    double blue = ((color.blue & 0xFFFF) / cast(double)0xFFFF);
+    Cairo.cairo_pattern_add_color_stop_rgba(pattern, offset, red, green, blue, aa);
+}
+
+void setClipping(GdkRegion* clipRgn) {
+    auto cairo = data.cairo;
+    if (clipRgn is null) {
+        if (data.clipRgn !is null) {
+            OS.gdk_region_destroy(data.clipRgn);
+            data.clipRgn = null;
+        }
+        if (cairo !is null) {
+            data.clippingTransform = null;
+            setCairoClip(cairo, clipRgn);
+        } else {
+            auto clipping = data.damageRgn !is null ? data.damageRgn : null;
+            OS.gdk_gc_set_clip_region(handle, clipping);
+        }
+    } else {
+        if (data.clipRgn is null) data.clipRgn = OS.gdk_region_new();
+        OS.gdk_region_subtract(data.clipRgn, data.clipRgn);
+        OS.gdk_region_union(data.clipRgn, clipRgn);
+        if (cairo !is null) {
+            if (data.clippingTransform is null) data.clippingTransform = new double[6];
+            Cairo.cairo_get_matrix(cairo,cast(cairo_matrix_t *) data.clippingTransform.ptr);
+            setCairoClip(cairo, clipRgn);
+        } else {
+            auto clipping = clipRgn;
+            if (data.damageRgn !is null) {
+                clipping = OS.gdk_region_new();
+                OS.gdk_region_union(clipping, clipRgn);
+                OS.gdk_region_intersect(clipping, data.damageRgn);
+            }
+            OS.gdk_gc_set_clip_region(handle, clipping);
+            if (clipping !is clipRgn) OS.gdk_region_destroy(clipping);
+        }
+    }
+}
+
+/**
+ * Sets the area of the receiver which can be changed
+ * by drawing operations to the rectangular area specified
+ * by the arguments.
+ *
+ * @param x the x coordinate of the clipping rectangle
+ * @param y the y coordinate of the clipping rectangle
+ * @param width the width of the clipping rectangle
+ * @param height the height of the clipping rectangle
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void setClipping(int x, int y, int width, int height) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (width < 0) {
+        x = x + width;
+        width = -width;
+    }
+    if (height < 0) {
+        y = y + height;
+        height = -height;
+    }
+    GdkRectangle rect;
+    rect.x = x;
+    rect.y = y;
+    rect.width = width;
+    rect.height = height;
+    auto clipRgn = OS.gdk_region_new();
+    OS.gdk_region_union_with_rect(clipRgn, &rect);
+    setClipping(clipRgn);
+    OS.gdk_region_destroy(clipRgn);
+}
+
+/**
+ * Sets the area of the receiver which can be changed
+ * by drawing operations to the path specified
+ * by the argument.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param path the clipping path.
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the path has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see Path
+ * @see #getAdvanced
+ * @see #setAdvanced
+ *
+ * @since 3.1
+ */
+public void setClipping(Path path) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (path !is null && path.isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    setClipping(cast(GdkRegion*)null);
+    if (path !is null) {
+        initCairo();
+        auto cairo = data.cairo;
+        auto copy = Cairo.cairo_copy_path(path.handle);
+        if (copy is null) SWT.error(SWT.ERROR_NO_HANDLES);
+        Cairo.cairo_append_path(cairo, copy);
+        Cairo.cairo_path_destroy(copy);
+        Cairo.cairo_clip(cairo);
+    }
+}
+
+/**
+ * Sets the area of the receiver which can be changed
+ * by drawing operations to the rectangular area specified
+ * by the argument.  Specifying <code>null</code> for the
+ * rectangle reverts the receiver's clipping area to its
+ * original value.
+ *
+ * @param rect the clipping rectangle or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void setClipping(Rectangle rect) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (rect is null) {
+        setClipping(cast(GdkRegion*)null);
+    } else {
+        setClipping(rect.x, rect.y, rect.width, rect.height);
+    }
+}
+/**
+ * Sets the area of the receiver which can be changed
+ * by drawing operations to the region specified
+ * by the argument.  Specifying <code>null</code> for the
+ * region reverts the receiver's clipping area to its
+ * original value.
+ *
+ * @param region the clipping region or <code>null</code>
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the region has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void setClipping(Region region) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (region !is null && region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    setClipping(region !is null ? region.handle : cast(GdkRegion*)null);
+}
+
+/**
+ * Sets the font which will be used by the receiver
+ * to draw and measure text to the argument. If the
+ * argument is null, then a default font appropriate
+ * for the platform will be used instead.
+ *
+ * @param font the new font for the receiver, or null to indicate a default font
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the font has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void setFont(Font font) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (font !is null && font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    data.font = font !is null ? font : data.device.systemFont;
+    data.state &= ~FONT;
+    data.stringWidth = data.stringHeight = -1;
+}
+
+/**
+ * Sets the receiver's fill rule to the parameter, which must be one of
+ * <code>SWT.FILL_EVEN_ODD</code> or <code>SWT.FILL_WINDING</code>.
+ *
+ * @param rule the new fill rule
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the rule is not one of <code>SWT.FILL_EVEN_ODD</code>
+ *                                 or <code>SWT.FILL_WINDING</code></li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public void setFillRule(int rule) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    int cairo_mode = Cairo.CAIRO_FILL_RULE_EVEN_ODD;
+    switch (rule) {
+        case SWT.FILL_WINDING:
+            cairo_mode = Cairo.CAIRO_FILL_RULE_WINDING; break;
+        case SWT.FILL_EVEN_ODD:
+            cairo_mode = Cairo.CAIRO_FILL_RULE_EVEN_ODD; break;
+        default:
+            SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    }
+    //TODO - need fill rule in X, GDK has no API
+    initCairo();
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        Cairo.cairo_set_fill_rule(cairo, cairo_mode);
+    }
+}
+
+/**
+ * Sets the foreground color. The foreground color is used
+ * for drawing operations including when text is drawn.
+ *
+ * @param color the new foreground color for the receiver
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the color is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the color has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void setForeground(Color color) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (color is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    data.foreground = color.handle;
+    data.foregroundPattern = null;
+    data.state &= ~FOREGROUND;
+}
+
+/**
+ * Sets the foreground pattern. The default value is <code>null</code>.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ * @param pattern the new foreground pattern
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see Pattern
+ * @see #getAdvanced
+ * @see #setAdvanced
+ *
+ * @since 3.1
+ */
+public void setForegroundPattern(Pattern pattern) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (pattern !is null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    if (data.cairo is null && pattern is null) return;
+    initCairo();
+    if (data.foregroundPattern is pattern) return;
+    data.foregroundPattern = pattern;
+    data.state &= ~FOREGROUND;
+}
+
+/**
+ * Sets the receiver's interpolation setting to the parameter, which
+ * must be one of <code>SWT.DEFAULT</code>, <code>SWT.NONE</code>,
+ * <code>SWT.LOW</code> or <code>SWT.HIGH</code>.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param interpolation the new interpolation setting
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the rule is not one of <code>SWT.DEFAULT</code>,
+ *                                 <code>SWT.NONE</code>, <code>SWT.LOW</code> or <code>SWT.HIGH</code>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see #getAdvanced
+ * @see #setAdvanced
+ *
+ * @since 3.1
+ */
+public void setInterpolation(int interpolation) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.cairo is null && interpolation is SWT.DEFAULT) return;
+    switch (interpolation) {
+        case SWT.DEFAULT:
+        case SWT.NONE:
+        case SWT.LOW:
+        case SWT.HIGH:
+            break;
+        default:
+            SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    }
+    initCairo();
+    data.interpolation = interpolation;
+}
+
+/**
+ * Sets the receiver's line attributes.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ * @param attributes the line attributes
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the attributes is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if any of the line attributes is not valid</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see LineAttributes
+ * @see #getAdvanced
+ * @see #setAdvanced
+ *
+ * @since 3.3
+ */
+public void setLineAttributes(LineAttributes attributes) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (attributes is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    int mask = 0;
+    float lineWidth = attributes.width;
+    if (lineWidth !is data.lineWidth) {
+        mask |= LINE_WIDTH | DRAW_OFFSET;
+    }
+    int lineStyle = attributes.style;
+    if (lineStyle !is data.lineStyle) {
+        mask |= LINE_STYLE;
+        switch (lineStyle) {
+            case SWT.LINE_SOLID:
+            case SWT.LINE_DASH:
+            case SWT.LINE_DOT:
+            case SWT.LINE_DASHDOT:
+            case SWT.LINE_DASHDOTDOT:
+                break;
+            case SWT.LINE_CUSTOM:
+                if (attributes.dash is null) lineStyle = SWT.LINE_SOLID;
+                break;
+            default:
+                SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+        }
+    }
+    int join = attributes.join;
+    if (join !is data.lineJoin) {
+        mask |= LINE_JOIN;
+        switch (join) {
+            case SWT.CAP_ROUND:
+            case SWT.CAP_FLAT:
+            case SWT.CAP_SQUARE:
+                break;
+            default:
+                SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+        }
+    }
+    int cap = attributes.cap;
+    if (cap !is data.lineCap) {
+        mask |= LINE_CAP;
+        switch (cap) {
+            case SWT.JOIN_MITER:
+            case SWT.JOIN_ROUND:
+            case SWT.JOIN_BEVEL:
+                break;
+            default:
+                SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+        }
+    }
+    float[] dashes = attributes.dash;
+    float[] lineDashes = data.lineDashes;
+    if (dashes !is null && dashes.length > 0) {
+        bool changed = lineDashes is null || lineDashes.length !is dashes.length;
+        for (int i = 0; i < dashes.length; i++) {
+            float dash = dashes[i];
+            if (dash <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+            if (!changed && lineDashes[i] !is dash) changed = true;
+        }
+        if (changed) {
+            float[] newDashes = new float[dashes.length];
+            System.arraycopy(dashes, 0, newDashes, 0, dashes.length);
+            dashes = newDashes;
+            mask |= LINE_STYLE;
+        } else {
+            dashes = lineDashes;
+        }
+    } else {
+        if (lineDashes !is null && lineDashes.length > 0) {
+            mask |= LINE_STYLE;
+        } else {
+            dashes = lineDashes;
+        }
+    }
+    float dashOffset = attributes.dashOffset;
+    if (dashOffset !is data.lineDashesOffset) {
+        mask |= LINE_STYLE;
+    }
+    float miterLimit = attributes.miterLimit;
+    if (miterLimit !is data.lineMiterLimit) {
+        mask |= LINE_MITERLIMIT;
+    }
+    initCairo();
+    if (mask is 0) return;
+    data.lineWidth = lineWidth;
+    data.lineStyle = lineStyle;
+    data.lineCap = cap;
+    data.lineJoin = join;
+    data.lineDashes = dashes;
+    data.lineDashesOffset = dashOffset;
+    data.lineMiterLimit = miterLimit;
+    data.state &= ~mask;
+}
+
+/**
+ * Sets the receiver's line cap style to the argument, which must be one
+ * of the constants <code>SWT.CAP_FLAT</code>, <code>SWT.CAP_ROUND</code>,
+ * or <code>SWT.CAP_SQUARE</code>.
+ *
+ * @param cap the cap style to be used for drawing lines
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public void setLineCap(int cap) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.lineCap is cap) return;
+    switch (cap) {
+        case SWT.CAP_ROUND:
+        case SWT.CAP_FLAT:
+        case SWT.CAP_SQUARE:
+            break;
+        default:
+            SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    }
+    data.lineCap = cap;
+    data.state &= ~LINE_CAP;
+}
+
+/**
+ * Sets the receiver's line dash style to the argument. The default
+ * value is <code>null</code>. If the argument is not <code>null</code>,
+ * the receiver's line style is set to <code>SWT.LINE_CUSTOM</code>, otherwise
+ * it is set to <code>SWT.LINE_SOLID</code>.
+ *
+ * @param dashes the dash style to be used for drawing lines
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if any of the values in the array is less than or equal 0</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public void setLineDash(int[] dashes) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    float[] lineDashes = data.lineDashes;
+    if (dashes !is null && dashes.length > 0) {
+        bool changed = data.lineStyle !is SWT.LINE_CUSTOM || lineDashes is null || lineDashes.length !is dashes.length;
+        for (int i = 0; i < dashes.length; i++) {
+            int dash = dashes[i];
+            if (dash <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+            if (!changed && lineDashes[i] !is dash) changed = true;
+        }
+        if (!changed) return;
+        data.lineDashes = new float[dashes.length];
+        for (int i = 0; i < dashes.length; i++) {
+            data.lineDashes[i] = dashes[i];
+        }
+        data.lineStyle = SWT.LINE_CUSTOM;
+    } else {
+        if (data.lineStyle is SWT.LINE_SOLID && (lineDashes is null || lineDashes.length is 0)) return;
+        data.lineDashes = null;
+        data.lineStyle = SWT.LINE_SOLID;
+    }
+    data.state &= ~LINE_STYLE;
+}
+
+/**
+ * Sets the receiver's line join style to the argument, which must be one
+ * of the constants <code>SWT.JOIN_MITER</code>, <code>SWT.JOIN_ROUND</code>,
+ * or <code>SWT.JOIN_BEVEL</code>.
+ *
+ * @param join the join style to be used for drawing lines
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public void setLineJoin(int join) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.lineJoin is join) return;
+    switch (join) {
+        case SWT.JOIN_MITER:
+        case SWT.JOIN_ROUND:
+        case SWT.JOIN_BEVEL:
+            break;
+        default:
+            SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    }
+    data.lineJoin = join;
+    data.state &= ~LINE_JOIN;
+}
+
+/**
+ * Sets the receiver's line style to the argument, which must be one
+ * of the constants <code>SWT.LINE_SOLID</code>, <code>SWT.LINE_DASH</code>,
+ * <code>SWT.LINE_DOT</code>, <code>SWT.LINE_DASHDOT</code> or
+ * <code>SWT.LINE_DASHDOTDOT</code>.
+ *
+ * @param lineStyle the style to be used for drawing lines
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void setLineStyle(int lineStyle) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.lineStyle is lineStyle) return;
+    switch (lineStyle) {
+        case SWT.LINE_SOLID:
+        case SWT.LINE_DASH:
+        case SWT.LINE_DOT:
+        case SWT.LINE_DASHDOT:
+        case SWT.LINE_DASHDOTDOT:
+            break;
+        case SWT.LINE_CUSTOM:
+            if (data.lineDashes is null) lineStyle = SWT.LINE_SOLID;
+            break;
+        default:
+            SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    }
+    data.lineStyle = lineStyle;
+    data.state &= ~LINE_STYLE;
+}
+
+/**
+ * Sets the width that will be used when drawing lines
+ * for all of the figure drawing operations (that is,
+ * <code>drawLine</code>, <code>drawRectangle</code>,
+ * <code>drawPolyline</code>, and so forth.
+ * <p>
+ * Note that line width of zero is used as a hint to
+ * indicate that the fastest possible line drawing
+ * algorithms should be used. This means that the
+ * output may be different from line width one.
+ * </p>
+ *
+ * @param lineWidth the width of a line
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void setLineWidth(int lineWidth) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.lineWidth is lineWidth) return;
+    data.lineWidth = lineWidth;
+    data.state &= ~(LINE_WIDTH | DRAW_OFFSET);
+}
+
+void setString(String str, int flags) {
+    if (data.layout is null) createLayout();
+    if (str is data.str && (flags & ~SWT.DRAW_TRANSPARENT) is (data.drawFlags  & ~SWT.DRAW_TRANSPARENT)) {
+        return;
+    }
+    String buffer;
+    int mnemonic, len = str.length ;
+    auto layout = data.layout;
+    char[] text = str.dup;
+    if ((flags & SWT.DRAW_MNEMONIC) !is 0 && (mnemonic = fixMnemonic(text)) !is -1) {
+        char[] text1 = new char[mnemonic - 1];
+        System.arraycopy(text, 0, text1, 0, text1.length);
+        char[] buffer1 = text1.dup;
+        char[] text2 = new char[text.length - mnemonic];
+        System.arraycopy(text, mnemonic - 1, text2, 0, text2.length);
+        char[] buffer2 = text2.dup;
+        buffer = new char[buffer1.length + buffer2.length];
+        System.arraycopy(buffer1, 0, buffer, 0, buffer1.length);
+        System.arraycopy(buffer2, 0, buffer, buffer1.length, buffer2.length);
+        auto attr_list = OS.pango_attr_list_new();
+        auto attr = OS.pango_attr_underline_new(OS.PANGO_UNDERLINE_LOW);
+        attr.start_index = buffer1.length;
+        attr.end_index = buffer1.length + 1;
+        OS.pango_attr_list_insert(attr_list, attr);
+        OS.pango_layout_set_attributes(layout, attr_list);
+        OS.pango_attr_list_unref(attr_list);
+    } else {
+        buffer = text.dup;
+        OS.pango_layout_set_attributes(layout, null);
+    }
+    OS.pango_layout_set_text(layout, buffer.ptr, buffer.length);
+    OS.pango_layout_set_single_paragraph_mode(layout, (flags & SWT.DRAW_DELIMITER) is 0);
+    OS.pango_layout_set_tabs(layout, (flags & SWT.DRAW_TAB) !is 0 ? null : data.device.emptyTab);
+    data.str = str;
+    data.stringWidth = data.stringHeight = -1;
+    data.drawFlags = flags;
+}
+
+/**
+ * Sets the receiver's text anti-aliasing value to the parameter,
+ * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code>
+ * or <code>SWT.ON</code>. Note that this controls anti-aliasing only
+ * for all <em>text drawing</em> operations.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param antialias the anti-aliasing setting
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the parameter is not one of <code>SWT.DEFAULT</code>,
+ *                                 <code>SWT.OFF</code> or <code>SWT.ON</code></li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see #getAdvanced
+ * @see #setAdvanced
+ * @see #setAntialias
+ *
+ * @since 3.1
+ */
+public void setTextAntialias(int antialias) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (data.cairo is null && antialias is SWT.DEFAULT) return;
+    int mode = 0;
+    switch (antialias) {
+        case SWT.DEFAULT: mode = Cairo.CAIRO_ANTIALIAS_DEFAULT; break;
+        case SWT.OFF: mode = Cairo.CAIRO_ANTIALIAS_NONE; break;
+        case SWT.ON: mode = Cairo.CAIRO_ANTIALIAS_GRAY;
+            break;
+        default:
+            SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    }
+    initCairo();
+    auto options = Cairo.cairo_font_options_create();
+    Cairo.cairo_font_options_set_antialias(options, mode);
+    if (OS.GTK_VERSION < OS.buildVERSION(2, 8, 0)) {
+        Cairo.cairo_set_font_options(data.cairo, options);
+    } else {
+        if (data.context is null) createLayout();
+        OS.pango_cairo_context_set_font_options(data.context, options);
+    }
+    Cairo.cairo_font_options_destroy(options);
+}
+
+/**
+ * Sets the transform that is currently being used by the receiver. If
+ * the argument is <code>null</code>, the current transform is set to
+ * the identity transform.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param transform the transform to set
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ *
+ * @see Transform
+ * @see #getAdvanced
+ * @see #setAdvanced
+ *
+ * @since 3.1
+ */
+public void setTransform(Transform transform) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    if (transform !is null && transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    if (data.cairo is null && transform is null) return;
+    initCairo();
+    auto cairo = data.cairo;
+    double[] identity = identity();
+    if (transform !is null) {
+        Cairo.cairo_matrix_multiply(cast(cairo_matrix_t*)identity.ptr, cast(cairo_matrix_t*)transform.handle.ptr, cast(cairo_matrix_t*)identity.ptr);
+    }
+    Cairo.cairo_set_matrix(cairo, cast(cairo_matrix_t*)identity.ptr);
+    data.state &= ~DRAW_OFFSET;
+}
+
+/**
+ * If the argument is <code>true</code>, puts the receiver
+ * in a drawing mode where the resulting color in the destination
+ * is the <em>exclusive or</em> of the color values in the source
+ * and the destination, and if the argument is <code>false</code>,
+ * puts the receiver in a drawing mode where the destination color
+ * is replaced with the source color value.
+ * <p>
+ * Note that this mode in fundamentally unsupportable on certain
+ * platforms, notably Carbon (Mac OS X). Clients that want their
+ * code to run on all platforms need to avoid this method.
+ * </p>
+ *
+ * @param xor if <code>true</code>, then <em>xor</em> mode is used, otherwise <em>source copy</em> mode is used
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @deprecated this functionality is not supported on some platforms
+ */
+public void setXORMode(bool xor) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    OS.gdk_gc_set_function(handle, xor ? OS.GDK_XOR : OS.GDK_COPY);
+    data.xorMode = xor;
+}
+
+/**
+ * Returns the extent of the given str. No tab
+ * expansion or carriage return processing will be performed.
+ * <p>
+ * The <em>extent</em> of a str is the width and height of
+ * the rectangular area it would cover if drawn in a particular
+ * font (in this case, the current font in the receiver).
+ * </p>
+ *
+ * @param str the str to measure
+ * @return a point containing the extent of the str
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Point stringExtent(String str) {
+    return textExtent(str, 0);
+}
+
+/**
+ * Returns the extent of the given str. Tab expansion and
+ * carriage return processing are performed.
+ * <p>
+ * The <em>extent</em> of a str is the width and height of
+ * the rectangular area it would cover if drawn in a particular
+ * font (in this case, the current font in the receiver).
+ * </p>
+ *
+ * @param str the str to measure
+ * @return a point containing the extent of the str
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Point textExtent(String str) {
+    return textExtent(str, SWT.DRAW_DELIMITER | SWT.DRAW_TAB);
+}
+
+/**
+ * Returns the extent of the given str. Tab expansion, line
+ * delimiter and mnemonic processing are performed according to
+ * the specified flags, which can be a combination of:
+ * <dl>
+ * <dt><b>DRAW_DELIMITER</b></dt>
+ * <dd>draw multiple lines</dd>
+ * <dt><b>DRAW_TAB</b></dt>
+ * <dd>expand tabs</dd>
+ * <dt><b>DRAW_MNEMONIC</b></dt>
+ * <dd>underline the mnemonic character</dd>
+ * <dt><b>DRAW_TRANSPARENT</b></dt>
+ * <dd>transparent background</dd>
+ * </dl>
+ * <p>
+ * The <em>extent</em> of a str is the width and height of
+ * the rectangular area it would cover if drawn in a particular
+ * font (in this case, the current font in the receiver).
+ * </p>
+ *
+ * @param str the str to measure
+ * @param flags the flags specifying how to process the text
+ * @return a point containing the extent of the str
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Point textExtent(String str, int flags) {
+    if (handle is null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+    //DWT_CHANGE: allow null for string
+    //if (str is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    auto cairo = data.cairo;
+    if (cairo !is null) {
+        if (OS.GTK_VERSION < OS.buildVERSION(2, 8, 0)) {
+            //TODO - honor flags
+            checkGC(FONT);
+            char* buffer = toStringz(str);
+            cairo_font_extents_t* font_extents = new cairo_font_extents_t();
+            Cairo.cairo_font_extents(cairo, font_extents);
+            cairo_text_extents_t* extents = new cairo_text_extents_t();
+            Cairo.cairo_text_extents(cairo, buffer, extents);
+            return new Point(cast(int)extents.width, cast(int)font_extents.height);
+        }
+    }
+    setString(str, flags);
+    checkGC(FONT);
+    if (data.stringWidth !is -1) return new Point(data.stringWidth, data.stringHeight);
+    int width, height;
+    OS.pango_layout_get_size(data.layout, &width, &height);
+    return new Point(data.stringWidth = OS.PANGO_PIXELS(width), data.stringHeight = OS.PANGO_PIXELS(height));
+}
+
+/**
+ * Returns a str containing a concise, human-readable
+ * description of the receiver.
+ *
+ * @return a str representation of the receiver
+ */
+public override String toString () {
+    if (isDisposed()) return "GC {*DISPOSED*}";
+    return Format( "GC {{{}}", handle );
+}
+
+}
+
+