--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/graphics/Cursor.d	Sat Aug 09 17:00:02 2008 +0200
@@ -0,0 +1,415 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 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
+ *******************************************************************************/
+module dwt.graphics.Cursor;
+
+import dwt.dwthelper.utils;
+
+
+import dwt.DWT;
+import dwt.DWTError;
+import dwt.internal.cocoa.NSBitmapImageRep;
+import dwt.internal.cocoa.NSCursor;
+import dwt.internal.cocoa.NSImage;
+import dwt.internal.cocoa.NSPoint;
+import dwt.internal.cocoa.NSSize;
+import dwt.internal.cocoa.NSString;
+import dwt.internal.cocoa.OS;
+
+/**
+ * Instances of this class manage operating system resources that
+ * specify the appearance of the on-screen pointer. To create a
+ * cursor you specify the device and either a simple cursor style
+ * describing one of the standard operating system provided cursors
+ * or the image and mask data for the desired appearance.
+ * <p>
+ * Application code must explicitly invoke the <code>Cursor.dispose()</code> 
+ * method to release the operating system resources managed by each instance
+ * when those instances are no longer required.
+ * </p>
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>
+ *   CURSOR_ARROW, CURSOR_WAIT, CURSOR_CROSS, CURSOR_APPSTARTING, CURSOR_HELP,
+ *   CURSOR_SIZEALL, CURSOR_SIZENESW, CURSOR_SIZENS, CURSOR_SIZENWSE, CURSOR_SIZEWE,
+ *   CURSOR_SIZEN, CURSOR_SIZES, CURSOR_SIZEE, CURSOR_SIZEW, CURSOR_SIZENE, CURSOR_SIZESE,
+ *   CURSOR_SIZESW, CURSOR_SIZENW, CURSOR_UPARROW, CURSOR_IBEAM, CURSOR_NO, CURSOR_HAND
+ * </dd>
+ * </dl>
+ * <p>
+ * Note: Only one of the above styles may be specified.
+ * </p>
+ */
+
+public final class Cursor extends Resource {
+    
+    /**
+     * the handle to the OS cursor resource
+     * (Warning: This field is platform dependent)
+     * <p>
+     * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
+     * public API. It is marked public only so that it can be shared
+     * within the packages provided by DWT. It is not available on all
+     * platforms and should never be accessed from application code.
+     * </p>
+     */
+    public NSCursor handle;
+
+/**
+ * Prevents uninitialized instances from being created outside the package.
+ */
+Cursor(Device device) {
+    super(device);
+}
+
+/**  
+ * Constructs a new cursor given a device and a style
+ * constant describing the desired cursor appearance.
+ * <p>
+ * You must dispose the cursor when it is no longer required. 
+ * </p>
+ *
+ * @param device the device on which to allocate the cursor
+ * @param style the style of cursor to allocate
+ * 
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li>
+ *    <li>ERROR_INVALID_ARGUMENT - when an unknown style is specified</li>
+ * </ul>
+ * @exception DWTError <ul>
+ *    <li>ERROR_NO_HANDLES - if a handle could not be obtained for cursor creation</li>
+ * </ul>
+ *
+ * @see DWT#CURSOR_ARROW
+ * @see DWT#CURSOR_WAIT
+ * @see DWT#CURSOR_CROSS
+ * @see DWT#CURSOR_APPSTARTING
+ * @see DWT#CURSOR_HELP
+ * @see DWT#CURSOR_SIZEALL
+ * @see DWT#CURSOR_SIZENESW
+ * @see DWT#CURSOR_SIZENS
+ * @see DWT#CURSOR_SIZENWSE
+ * @see DWT#CURSOR_SIZEWE
+ * @see DWT#CURSOR_SIZEN
+ * @see DWT#CURSOR_SIZES
+ * @see DWT#CURSOR_SIZEE
+ * @see DWT#CURSOR_SIZEW
+ * @see DWT#CURSOR_SIZENE
+ * @see DWT#CURSOR_SIZESE
+ * @see DWT#CURSOR_SIZESW
+ * @see DWT#CURSOR_SIZENW
+ * @see DWT#CURSOR_UPARROW
+ * @see DWT#CURSOR_IBEAM
+ * @see DWT#CURSOR_NO
+ * @see DWT#CURSOR_HAND
+ */
+public Cursor(Device device, int style) {
+    super(device);
+    switch (style) {
+        case DWT.CURSOR_HAND:           handle = NSCursor.pointingHandCursor(); break;
+        case DWT.CURSOR_ARROW:          handle = NSCursor.arrowCursor(); break;
+        case DWT.CURSOR_WAIT:           handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_CROSS:          handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_APPSTARTING:    handle = NSCursor.arrowCursor(); break;
+        case DWT.CURSOR_HELP:           handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_SIZEALL:        handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_SIZENESW:       handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_SIZENS:         handle = NSCursor.resizeUpDownCursor(); break;
+        case DWT.CURSOR_SIZENWSE:       handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_SIZEWE:         handle = NSCursor.resizeLeftRightCursor(); break;
+        case DWT.CURSOR_SIZEN:          handle = NSCursor.resizeUpCursor(); break;
+        case DWT.CURSOR_SIZES:          handle = NSCursor.resizeDownCursor(); break;
+        case DWT.CURSOR_SIZEE:          handle = NSCursor.resizeRightCursor(); break;
+        case DWT.CURSOR_SIZEW:          handle = NSCursor.resizeLeftCursor(); break;
+        case DWT.CURSOR_SIZENE:         handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_SIZESE:         handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_SIZESW:         handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_SIZENW:         handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_UPARROW:        handle = NSCursor.crosshairCursor(); break;
+        case DWT.CURSOR_IBEAM:          handle = NSCursor.IBeamCursor(); break;
+        case DWT.CURSOR_NO:             handle = NSCursor.crosshairCursor(); break;
+        default:
+            DWT.error(DWT.ERROR_INVALID_ARGUMENT);
+    }
+    handle.retain();
+    handle.setOnMouseEntered(true);
+    init();
+}
+
+/**  
+ * Constructs a new cursor given a device, image and mask
+ * data describing the desired cursor appearance, and the x
+ * and y coordinates of the <em>hotspot</em> (that is, the point
+ * within the area covered by the cursor which is considered
+ * to be where the on-screen pointer is "pointing").
+ * <p>
+ * The mask data is allowed to be null, but in this case the source
+ * must be an ImageData representing an icon that specifies both
+ * color data and mask data.
+ * <p>
+ * You must dispose the cursor when it is no longer required. 
+ * </p>
+ *
+ * @param device the device on which to allocate the cursor
+ * @param source the color data for the cursor
+ * @param mask the mask data for the cursor (or null)
+ * @param hotspotX the x coordinate of the cursor's hotspot
+ * @param hotspotY the y coordinate of the cursor's hotspot
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li>
+ *    <li>ERROR_NULL_ARGUMENT - if the source is null</li>
+ *    <li>ERROR_NULL_ARGUMENT - if the mask is null and the source does not have a mask</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the source and the mask are not the same 
+ *          size, or if the hotspot is outside the bounds of the image</li>
+ * </ul>
+ * @exception DWTError <ul>
+ *    <li>ERROR_NO_HANDLES - if a handle could not be obtained for cursor creation</li>
+ * </ul>
+ */
+public Cursor(Device device, ImageData source, ImageData mask, int hotspotX, int hotspotY) {
+    super(device);
+    if (source is null) DWT.error(DWT.ERROR_NULL_ARGUMENT);
+    if (mask is null) {
+        if (source.getTransparencyType() !is DWT.TRANSPARENCY_MASK) {
+            DWT.error(DWT.ERROR_NULL_ARGUMENT);
+        }
+        mask = source.getTransparencyMask();
+    }
+    /* Check the bounds. Mask must be the same size as source */
+    if (mask.width !is source.width || mask.height !is source.height) {
+        DWT.error(DWT.ERROR_INVALID_ARGUMENT);
+    }
+    /* Check the hotspots */
+    if (hotspotX >= source.width || hotspotX < 0 ||
+        hotspotY >= source.height || hotspotY < 0) {
+        DWT.error(DWT.ERROR_INVALID_ARGUMENT);
+    }
+    byte[] data = new byte[source.width * source.height * 4];
+    for (int y = 0; y < source.height; y++) {
+        int offset = y * source.width * 4;
+        for (int x = 0; x < source.width; x++) {
+            int pixel = source.getPixel(x, y);
+            int maskPixel = mask.getPixel(x, y);
+            if (pixel is 0 && maskPixel is 0) {
+                // BLACK
+                data[offset] = (byte)0xFF;
+            } else if (pixel is 0 && maskPixel is 1) {
+                // WHITE - cursor color
+                data[offset] = data[offset + 1] = data[offset + 2] = data[offset + 3] = (byte)0xFF;
+            } else if (pixel is 1 && maskPixel is 0) {
+                // SCREEN
+            } else {
+                /*
+                * Feature in the Macintosh. It is not possible to have
+                * the reverse screen case using NSCursor.
+                * Reverse screen will be the same as screen.
+                */
+                // REVERSE SCREEN -> SCREEN
+            }
+            offset += 4;
+        }
+    }
+    createNSCursor(hotspotX, hotspotY, data, source.width, source.height);
+    init();
+}
+
+void createNSCursor(int hotspotX, int hotspotY, byte[] buffer, int width, int height) {
+    NSImage nsImage = (NSImage)new NSImage().alloc();
+    NSBitmapImageRep nsImageRep = (NSBitmapImageRep)new NSBitmapImageRep().alloc();
+    handle = (NSCursor)new NSCursor().alloc();
+    NSSize size = new NSSize();
+    size.width = width;
+    size.height =  height;
+    nsImage = nsImage.initWithSize(size);
+    nsImageRep = nsImageRep.initWithBitmapDataPlanes_pixelsWide_pixelsHigh_bitsPerSample_samplesPerPixel_hasAlpha_isPlanar_colorSpaceName_bitmapFormat_bytesPerRow_bitsPerPixel_(0, width, height,
+            8, 4, true, false, new NSString(OS.NSDeviceRGBColorSpace()),
+            OS.NSAlphaFirstBitmapFormat | OS.NSAlphaNonpremultipliedBitmapFormat, width * 4, 32);
+    OS.memmove(nsImageRep.bitmapData(), buffer, buffer.length);
+    nsImage.addRepresentation(nsImageRep);
+    NSPoint point = new NSPoint();
+    point.x = hotspotX;
+    point.y = hotspotY;
+    handle = handle.initWithImage_hotSpot_(nsImage, point);
+    nsImageRep.release();
+    nsImage.release();
+}
+
+/**  
+ * Constructs a new cursor given a device, image data describing
+ * the desired cursor appearance, and the x and y coordinates of
+ * the <em>hotspot</em> (that is, the point within the area
+ * covered by the cursor which is considered to be where the
+ * on-screen pointer is "pointing").
+ * <p>
+ * You must dispose the cursor when it is no longer required. 
+ * </p>
+ *
+ * @param device the device on which to allocate the cursor
+ * @param source the image data for the cursor
+ * @param hotspotX the x coordinate of the cursor's hotspot
+ * @param hotspotY the y coordinate of the cursor's hotspot
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li>
+ *    <li>ERROR_NULL_ARGUMENT - if the image is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the hotspot is outside the bounds of the
+ *       image</li>
+ * </ul>
+ * @exception DWTError <ul>
+ *    <li>ERROR_NO_HANDLES - if a handle could not be obtained for cursor creation</li>
+ * </ul>
+ * 
+ * @since 3.0
+ */
+public Cursor(Device device, ImageData source, int hotspotX, int hotspotY) {
+    super(device);
+    if (source is null) DWT.error(DWT.ERROR_NULL_ARGUMENT);
+    if (hotspotX >= source.width || hotspotX < 0 ||
+        hotspotY >= source.height || hotspotY < 0) {
+        DWT.error(DWT.ERROR_INVALID_ARGUMENT);
+    }
+    byte[] data = new byte[source.width * source.height * 4];
+    PaletteData palette = source.palette;
+    if (palette.isDirect) {
+        ImageData.blit(ImageData.BLIT_SRC,
+            source.data, source.depth, source.bytesPerLine, source.getByteOrder(), 0, 0, source.width, source.height, palette.redMask, palette.greenMask, palette.blueMask,
+            ImageData.ALPHA_OPAQUE, null, 0, 0, 0, 
+            data, 32, source.width * 4, ImageData.MSB_FIRST, 0, 0, source.width, source.height, 0xFF0000, 0xFF00, 0xFF,
+            false, false);
+    } else {
+        RGB[] rgbs = palette.getRGBs();
+        int length = rgbs.length;
+        byte[] srcReds = new byte[length];
+        byte[] srcGreens = new byte[length];
+        byte[] srcBlues = new byte[length];
+        for (int i = 0; i < rgbs.length; i++) {
+            RGB rgb = rgbs[i];
+            if (rgb is null) continue;
+            srcReds[i] = (byte)rgb.red;
+            srcGreens[i] = (byte)rgb.green;
+            srcBlues[i] = (byte)rgb.blue;
+        }
+        ImageData.blit(ImageData.BLIT_SRC,
+            source.data, source.depth, source.bytesPerLine, source.getByteOrder(), 0, 0, source.width, source.height, srcReds, srcGreens, srcBlues,
+            ImageData.ALPHA_OPAQUE, null, 0, 0, 0,
+            data, 32, source.width * 4, ImageData.MSB_FIRST, 0, 0, source.width, source.height, 0xFF0000, 0xFF00, 0xFF,
+            false, false);
+    }
+    if (source.maskData !is null || source.transparentPixel !is -1) {
+        ImageData mask = source.getTransparencyMask();
+        byte[] maskData = mask.data;
+        int maskBpl = mask.bytesPerLine;
+        int offset = 0, maskOffset = 0;
+        for (int y = 0; y<source.height; y++) {
+            for (int x = 0; x<source.width; x++) {
+                data[offset] = ((maskData[maskOffset + (x >> 3)]) & (1 << (7 - (x & 0x7)))) !is 0 ? (byte)0xff : 0;
+                offset += 4;
+            }
+            maskOffset += maskBpl;
+        }
+    } else if (source.alpha !is -1) {
+        byte alpha = (byte)source.alpha;
+        for (int i=0; i<data.length; i+=4) {
+            data[i] = alpha;                
+        }
+    } else if (source.alphaData !is null) {
+        byte[] alphaData = source.alphaData;
+        for (int i=0; i<data.length; i+=4) {
+            data[i] = alphaData[i/4];
+        }
+    }
+    createNSCursor(hotspotX, hotspotY, data, source.width, source.height);
+    init();
+}
+
+void destroy() {
+    handle.release();
+    handle = null;
+}
+
+/**
+ * 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 bool equals (Object object) {
+    if (object is this) return true;
+    if (!(object instanceof Cursor)) return false;
+    Cursor cursor = (Cursor) object;
+    return device is cursor.device && handle is cursor.handle;
+}
+
+/**
+ * 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
+ *
+ * @see #equals
+ */
+public int hashCode () {
+    return handle !is null ? handle.id : 0;
+}
+
+/**
+ * Returns <code>true</code> if the cursor has been disposed,
+ * and <code>false</code> otherwise.
+ * <p>
+ * This method gets the dispose state for the cursor.
+ * When a cursor has been disposed, it is an error to
+ * invoke any other method using the cursor.
+ *
+ * @return <code>true</code> when the cursor is disposed and <code>false</code> otherwise
+ */
+public 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 String toString () {
+    if (isDisposed()) return "Cursor {*DISPOSED*}";
+    return "Cursor {" + handle + "}";
+}
+
+/**  
+ * Invokes platform specific functionality to allocate a new cursor.
+ * <p>
+ * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
+ * API for <code>Cursor</code>. It is marked public only so that it
+ * can be shared within the packages provided by DWT. It is not
+ * available on all platforms, and should never be called from
+ * application code.
+ * </p>
+ *
+ * @param device the device on which to allocate the color
+ * @param handle the handle for the cursor
+ * 
+ * @private
+ */
+public static Cursor cocoa_new(Device device, NSCursor handle) {
+    Cursor cursor = new Cursor(device);
+    cursor.handle = handle;
+    return cursor;
+}
+
+}