Mercurial > projects > dwt-mac
view dwt/graphics/Cursor.d @ 155:e91dcbf77cc7
Fixes runtime problems with dmd and ldc. Changed a couple of floats to CGFloat
author | Jacob Carlborg <doob@me.com> |
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date | Mon, 06 Jul 2009 21:17:03 +0200 |
parents | 62202ce0039f |
children |
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/******************************************************************************* * 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: * Jacob Carlborg <doob@me.com> *******************************************************************************/ module dwt.graphics.Cursor; import dwt.DWT; import dwt.DWTError; import dwt.internal.cocoa.NSAutoreleasePool; 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.NSThread; import dwt.internal.cocoa.OS; import tango.text.convert.Format; import dwt.dwthelper.utils; import dwt.graphics.Device; import dwt.graphics.ImageData; import dwt.graphics.PaletteData; import dwt.graphics.Resource; import dwt.graphics.RGB; import dwt.internal.objc.cocoa.Cocoa; /** * 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> * * @see <a href="http://www.eclipse.org/swt/snippets/#cursor">Cursor snippets</a> * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> */ public final class Cursor : Resource { alias Resource.init_ init_; static const byte[] WAIT_SOURCE; static this () { WAIT_SOURCE = [ cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0xFF, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0xFF, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0xFF, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0xFF, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0xFF, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, 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cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0xFF, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0xFF, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0xFF, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0xFF, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00, cast(byte)0x00 ]; } /** * 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. */ this(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 this(Device device, int style) { super(device); NSAutoreleasePool pool = null; if (!NSThread.isMainThread()) pool = cast(NSAutoreleasePool) (new NSAutoreleasePool()).alloc().init(); try { switch (style) { case DWT.CURSOR_HAND: handle = NSCursor.pointingHandCursor(); break; case DWT.CURSOR_ARROW: handle = NSCursor.arrowCursor(); break; case DWT.CURSOR_WAIT: 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); } if (handle is null && style is DWT.CURSOR_WAIT) { NSImage nsImage = cast(NSImage)(new NSImage()).alloc(); NSBitmapImageRep nsImageRep = cast(NSBitmapImageRep)(new NSBitmapImageRep()).alloc(); handle = cast(NSCursor)(new NSCursor()).alloc(); int width = 16, height = 16; NSSize size = NSSize(); size.width = width; size.height = height; nsImage = nsImage.initWithSize(size); nsImageRep = nsImageRep.initWithBitmapDataPlanes(null, width, height, 8, 4, true, false, OS.NSDeviceRGBColorSpace, OS.NSAlphaFirstBitmapFormat | OS.NSAlphaNonpremultipliedBitmapFormat, width*4, 32); OS.memmove(nsImageRep.bitmapData(), WAIT_SOURCE.ptr, WAIT_SOURCE.length); nsImage.addRepresentation(nsImageRep); NSPoint point = NSPoint(); point.x = 0; point.y = 0; handle = handle.initWithImage(nsImage, point); nsImageRep.release(); nsImage.release(); } else { handle.retain(); } handle.setOnMouseEntered(true); init_(); } finally { if (pool !is null) pool.release(); } } /** * 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 this(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] = cast(byte)0xFF; } else if (pixel is 0 && maskPixel is 1) { // WHITE - cursor color data[offset] = data[offset + 1] = data[offset + 2] = data[offset + 3] = cast(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; } } NSAutoreleasePool pool = null; if (!NSThread.isMainThread()) pool = cast(NSAutoreleasePool) (new NSAutoreleasePool()).alloc().init(); try { createNSCursor(hotspotX, hotspotY, data, source.width, source.height); init_(); } finally { if (pool !is null) pool.release(); } } void createNSCursor(int hotspotX, int hotspotY, byte[] buffer, int width, int height) { ubyte** dummy; NSImage nsImage = cast(NSImage)(new NSImage()).alloc(); NSBitmapImageRep nsImageRep = cast(NSBitmapImageRep)(new NSBitmapImageRep()).alloc(); handle = cast(NSCursor)(new NSCursor()).alloc(); NSSize size = NSSize(); size.width = width; size.height = height; nsImage = nsImage.initWithSize(size); nsImageRep = nsImageRep.initWithBitmapDataPlanes(null, width, height, 8, 4, true, false, OS.NSDeviceRGBColorSpace, OS.NSAlphaFirstBitmapFormat | OS.NSAlphaNonpremultipliedBitmapFormat, width * 4, 32); OS.memmove(cast(void*) nsImageRep.bitmapData(), buffer.ptr, buffer.length); nsImage.addRepresentation(nsImageRep); NSPoint point = NSPoint(); point.x = hotspotX; point.y = hotspotY; handle = handle.initWithImage(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 this(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] = cast(byte)rgb.red; srcGreens[i] = cast(byte)rgb.green; srcBlues[i] = cast(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 ? cast(byte)0xff : 0; offset += 4; } maskOffset += maskBpl; } } else if (source.alpha !is -1) { byte alpha = cast(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]; } } NSAutoreleasePool pool = null; if (!NSThread.isMainThread()) pool = cast(NSAutoreleasePool) (new NSAutoreleasePool()).alloc().init(); try { createNSCursor(hotspotX, hotspotY, data, source.width, source.height); init_(); } finally { if (pool !is null) pool.release(); } } 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 int opEquals (Object object) { if (object is this) return true; if (!( null !is cast(Cursor)object )) return false; Cursor cursor = cast(Cursor) object; return device is cursor.device && handle is cursor.handle; } alias opEquals equals; /** * 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 hash_t toHash () { return handle !is null ? cast(hash_t) handle.id : 0; } alias toHash hashCode; /** * 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 Format("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; } }