--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/graphics/Pattern.d	Fri Mar 20 23:03:58 2009 +0100
@@ -0,0 +1,218 @@
+/*******************************************************************************
+ * 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.Pattern;
+
+import java.lang.all;
+
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Resource;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.graphics.Device;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.internal.cairo.Cairo;
+
+import tango.text.convert.Format;
+
+/**
+ * Instances of this class represent patterns to use while drawing. Patterns
+ * can be specified either as bitmaps or gradients.
+ * <p>
+ * Application code must explicitly invoke the <code>Pattern.dispose()</code>
+ * method to release the operating system resources managed by each instance
+ * when those instances are no longer required.
+ * </p>
+ * <p>
+ * This class requires the operating system's advanced graphics subsystem
+ * which may not be available on some platforms.
+ * </p>
+ *
+ * @see <a href="http://www.eclipse.org/swt/snippets/#path">Path, Pattern snippets</a>
+ * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: GraphicsExample</a>
+ * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
+ *
+ * @since 3.1
+ */
+public class Pattern : Resource {
+
+    /**
+     * the OS resource for the Pattern
+     * (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 cairo_pattern_t* handle;
+
+    cairo_surface_t * surface;
+
+/**
+ * Constructs a new Pattern given an image. Drawing with the resulting
+ * pattern will cause the image to be tiled over the resulting area.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param device the device on which to allocate the pattern
+ * @param image the image that the pattern will draw
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the device is null and there is no current device, or the image is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ * @exception SWTError <ul>
+ *    <li>ERROR_NO_HANDLES if a handle for the pattern could not be obtained</li>
+ * </ul>
+ *
+ * @see #dispose()
+ */
+public this(Device device, Image image) {
+    super(device);
+    if (image is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    this.device.checkCairo();
+    image.createSurface();
+    handle = Cairo.cairo_pattern_create_for_surface(image.surface);
+    if (handle is null) SWT.error(SWT.ERROR_NO_HANDLES);
+    Cairo.cairo_pattern_set_extend(handle, Cairo.CAIRO_EXTEND_REPEAT);
+    surface = image.surface;
+    init_();
+}
+
+/**
+ * Constructs a new Pattern that represents a linear, two color
+ * gradient. Drawing with the pattern will cause the resulting area to be
+ * tiled with the gradient specified by the arguments.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param device the device on which to allocate the pattern
+ * @param x1 the x coordinate of the starting corner of the gradient
+ * @param y1 the y coordinate of the starting corner of the gradient
+ * @param x2 the x coordinate of the ending corner of the gradient
+ * @param y2 the y coordinate of the ending corner of the gradient
+ * @param color1 the starting color of the gradient
+ * @param color2 the ending color of the gradient
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the device is null and there is no current device,
+ *                              or if either color1 or color2 is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if either color1 or color2 has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ * @exception SWTError <ul>
+ *    <li>ERROR_NO_HANDLES if a handle for the pattern could not be obtained</li>
+ * </ul>
+ *
+ * @see #dispose()
+ */
+public this(Device device, float x1, float y1, float x2, float y2, Color color1, Color color2) {
+    this(device, x1, y1, x2, y2, color1, 0xFF, color2, 0xFF);
+}
+/**
+ * Constructs a new Pattern that represents a linear, two color
+ * gradient. Drawing with the pattern will cause the resulting area to be
+ * tiled with the gradient specified by the arguments.
+ * <p>
+ * This operation requires the operating system's advanced
+ * graphics subsystem which may not be available on some
+ * platforms.
+ * </p>
+ *
+ * @param device the device on which to allocate the pattern
+ * @param x1 the x coordinate of the starting corner of the gradient
+ * @param y1 the y coordinate of the starting corner of the gradient
+ * @param x2 the x coordinate of the ending corner of the gradient
+ * @param y2 the y coordinate of the ending corner of the gradient
+ * @param color1 the starting color of the gradient
+ * @param alpha1 the starting alpha value of the gradient
+ * @param color2 the ending color of the gradient
+ * @param alpha2 the ending alpha value of the gradient
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the device is null and there is no current device,
+ *                              or if either color1 or color2 is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if either color1 or color2 has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
+ * </ul>
+ * @exception SWTError <ul>
+ *    <li>ERROR_NO_HANDLES if a handle for the pattern could not be obtained</li>
+ * </ul>
+ *
+ * @see #dispose()
+ *
+ * @since 3.2
+ */
+public this(Device device, float x1, float y1, float x2, float y2, Color color1, int alpha1, Color color2, int alpha2) {
+    super(device);
+    if (color1 is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (color1.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    if (color2 is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (color2.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    this.device.checkCairo();
+    handle = Cairo.cairo_pattern_create_linear(x1, y1, x2, y2);
+    if (handle is null) SWT.error(SWT.ERROR_NO_HANDLES);
+    GC.setCairoPatternColor(handle, 0, color1, alpha1);
+    GC.setCairoPatternColor(handle, 1, color2, alpha2);
+    Cairo.cairo_pattern_set_extend(handle, Cairo.CAIRO_EXTEND_REPEAT);
+    init_();
+}
+
+void destroy() {
+    Cairo.cairo_pattern_destroy(handle);
+    handle = null;
+    surface = null;
+}
+
+/**
+ * Returns <code>true</code> if the Pattern has been disposed,
+ * and <code>false</code> otherwise.
+ * <p>
+ * This method gets the dispose state for the Pattern.
+ * When a Pattern has been disposed, it is an error to
+ * invoke any other method using the Pattern.
+ *
+ * @return <code>true</code> when the Pattern is disposed, and <code>false</code> otherwise
+ */
+public override bool isDisposed() {
+    return handle is null;
+}
+
+/**
+ * Returns a string containing a concise, human-readable
+ * description of the receiver.
+ *
+ * @return a string representation of the receiver
+ */
+public override String toString() {
+    if (isDisposed()) return "Pattern {*DISPOSED*}";
+    return Format( "Pattern {{{}}", handle );
+}
+
+}