| /******************************************************************************* |
| * Copyright (c) 2000, 2018 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 |
| *******************************************************************************/ |
| package org.eclipse.swt.graphics; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.cocoa.*; |
| |
| /** |
| * 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> |
| * The result of drawing on an image that was created with an indexed |
| * palette using a color that is not in the palette is platform specific. |
| * Some platforms will match to the nearest color while other will draw |
| * the color itself. This happens because the allocated image might use |
| * a direct palette on platforms that do not support indexed palette. |
| * </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 extends Resource { |
| /** |
| * 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> |
| * |
| * @noreference This field is not intended to be referenced by clients. |
| */ |
| public NSGraphicsContext handle; |
| |
| Drawable drawable; |
| GCData data; |
| |
| CGPathElement element; |
| int count, typeCount; |
| byte[] types; |
| double /*float*/[] points; |
| double /*float*/ [] point; |
| |
| static final int TAB_COUNT = 32; |
| |
| final static int FOREGROUND = 1 << 0; |
| final static int BACKGROUND = 1 << 1; |
| final static int FONT = 1 << 2; |
| final static int LINE_STYLE = 1 << 3; |
| final static int LINE_CAP = 1 << 4; |
| final static int LINE_JOIN = 1 << 5; |
| final static int LINE_WIDTH = 1 << 6; |
| final static int LINE_MITERLIMIT = 1 << 7; |
| final static int FOREGROUND_FILL = 1 << 8; |
| final static int DRAW_OFFSET = 1 << 9; |
| final static int CLIPPING = 1 << 10; |
| final static int TRANSFORM = 1 << 11; |
| final static int VISIBLE_REGION = 1 << 12; |
| final static int DRAW = CLIPPING | TRANSFORM | FOREGROUND | LINE_WIDTH | LINE_STYLE | LINE_CAP | LINE_JOIN | LINE_MITERLIMIT | DRAW_OFFSET; |
| final static int FILL = CLIPPING | TRANSFORM | BACKGROUND; |
| |
| static final float[] LINE_DOT = new float[]{1, 1}; |
| static final float[] LINE_DASH = new float[]{3, 1}; |
| static final float[] LINE_DASHDOT = new float[]{3, 1, 1, 1}; |
| static final float[] LINE_DASHDOTDOT = new float[]{3, 1, 1, 1, 1, 1}; |
| static final float[] LINE_DOT_ZERO = new float[]{3, 3}; |
| static final float[] LINE_DASH_ZERO = new float[]{18, 6}; |
| static final float[] LINE_DASHDOT_ZERO = new float[]{9, 6, 3, 6}; |
| static final float[] LINE_DASHDOTDOT_ZERO = new float[]{9, 3, 3, 3, 3, 3}; |
| |
| GC() { |
| } |
| |
| /** |
| * 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> |
| * @see #dispose() |
| */ |
| public GC(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> |
| * |
| * @see #dispose() |
| * |
| * @since 2.1.2 |
| */ |
| public GC(Drawable drawable, int style) { |
| if (drawable == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| GCData data = new GCData(); |
| data.style = checkStyle(style); |
| long /*int*/ contextId = drawable.internal_new_GC(data); |
| Device device = data.device; |
| if (device == null) device = Device.getDevice(); |
| if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| this.device = data.device = device; |
| init(drawable, data, contextId); |
| init(); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| static int checkStyle (int style) { |
| if ((style & SWT.LEFT_TO_RIGHT) != 0) style &= ~SWT.RIGHT_TO_LEFT; |
| return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT); |
| } |
| |
| /** |
| * Invokes platform specific functionality to allocate a new graphics context. |
| * <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> |
| * |
| * @param drawable the Drawable for the receiver. |
| * @param data the data for the receiver. |
| * |
| * @return a new <code>GC</code> |
| * |
| * @noreference This method is not intended to be referenced by clients. |
| */ |
| public static GC cocoa_new(Drawable drawable, GCData data) { |
| GC gc = new GC(); |
| long /*int*/ context = drawable.internal_new_GC(data); |
| gc.device = data.device; |
| gc.init(drawable, data, context); |
| return gc; |
| } |
| |
| long /*int*/ applierFunc(long /*int*/ info, long /*int*/ elementPtr) { |
| OS.memmove(element, elementPtr, CGPathElement.sizeof); |
| int type = 0, length = 1; |
| switch (element.type) { |
| case OS.kCGPathElementMoveToPoint: type = SWT.PATH_MOVE_TO; break; |
| case OS.kCGPathElementAddLineToPoint: type = SWT.PATH_LINE_TO; break; |
| case OS.kCGPathElementAddQuadCurveToPoint: type = SWT.PATH_QUAD_TO; length = 2; break; |
| case OS.kCGPathElementAddCurveToPoint: type = SWT.PATH_CUBIC_TO; length = 3; break; |
| case OS.kCGPathElementCloseSubpath: type = SWT.PATH_CLOSE; length = 0; break; |
| } |
| if (types != null) { |
| types[typeCount] = (byte)type; |
| if (length > 0) { |
| C.memmove(point, element.points, length * CGPoint.sizeof); |
| System.arraycopy(point, 0, points, count, length * 2); |
| } |
| } |
| typeCount++; |
| count += length * 2; |
| return 0; |
| } |
| |
| NSAutoreleasePool checkGC (int mask) { |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| if (data.flippedContext != null && !handle.isEqual(NSGraphicsContext.currentContext())) { |
| data.restoreContext = true; |
| NSGraphicsContext.static_saveGraphicsState(); |
| NSGraphicsContext.setCurrentContext(handle); |
| } |
| if ((mask & (CLIPPING | TRANSFORM)) != 0) { |
| NSView view = data.view; |
| if ((data.state & CLIPPING) == 0 || (data.state & TRANSFORM) == 0 || (data.state & VISIBLE_REGION) == 0) { |
| boolean antialias = handle.shouldAntialias(); |
| handle.restoreGraphicsState(); |
| handle.saveGraphicsState(); |
| handle.setShouldAntialias(antialias); |
| if (view != null && (data.paintRect == null || !view.isFlipped())) { |
| NSAffineTransform transform = NSAffineTransform.transform(); |
| NSRect rect = view.convertRect_toView_(view.bounds(), null); |
| if (data.paintRect == null) { |
| transform.translateXBy(rect.x, rect.y + rect.height); |
| } else { |
| transform.translateXBy(0, rect.height); |
| } |
| transform.scaleXBy(1, -1); |
| transform.concat(); |
| if (data.visibleRgn != 0) { |
| if (data.visiblePath == null || (data.state & VISIBLE_REGION) == 0) { |
| if (data.visiblePath != null) data.visiblePath.release(); |
| data.visiblePath = Region.cocoa_new(device, data.visibleRgn).getPath(); |
| } |
| data.visiblePath.addClip(); |
| data.state |= VISIBLE_REGION; |
| } |
| } |
| if (data.clipPath != null) data.clipPath.addClip(); |
| if (data.transform != null) data.transform.concat(); |
| mask &= ~(TRANSFORM | CLIPPING); |
| data.state |= TRANSFORM | CLIPPING; |
| data.state &= ~(BACKGROUND | FOREGROUND); |
| } |
| } |
| |
| OS.CGContextSetBlendMode(handle.graphicsPort(), data.xorMode ? OS.kCGBlendModeDifference : OS.kCGBlendModeNormal); |
| |
| int state = data.state; |
| if ((state & mask) == mask) return pool; |
| state = (state ^ mask) & mask; |
| data.state |= mask; |
| |
| if ((state & FOREGROUND) != 0) { |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) { |
| if (pattern.color != null) pattern.color.setStroke(); |
| } else { |
| double /*float*/ [] color = data.foreground; |
| if (data.fg != null) data.fg.release(); |
| NSColor fg = data.fg = NSColor.colorWithDeviceRed(color[0], color[1], color[2], data.alpha / 255f); |
| fg.retain(); |
| fg.setStroke(); |
| } |
| } |
| if ((state & FOREGROUND_FILL) != 0) { |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) { |
| if (pattern.color != null) pattern.color.setFill(); |
| } else { |
| double /*float*/ [] color = data.foreground; |
| if (data.fg != null) data.fg.release(); |
| NSColor fg = data.fg = NSColor.colorWithDeviceRed(color[0], color[1], color[2], data.alpha / 255f); |
| fg.retain(); |
| fg.setFill(); |
| } |
| data.state &= ~BACKGROUND; |
| } |
| if ((state & BACKGROUND) != 0) { |
| Pattern pattern = data.backgroundPattern; |
| if (pattern != null) { |
| if (pattern.color != null) pattern.color.setFill(); |
| } else { |
| double /*float*/ [] color = data.background; |
| if (data.bg != null) data.bg.release(); |
| NSColor bg = data.bg = NSColor.colorWithDeviceRed(color[0], color[1], color[2], data.alpha / 255f); |
| bg.retain(); |
| bg.setFill(); |
| } |
| data.state &= ~FOREGROUND_FILL; |
| } |
| NSBezierPath path = data.path; |
| if ((state & LINE_WIDTH) != 0) { |
| path.setLineWidth(data.lineWidth == 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; |
| } |
| } |
| if ((state & LINE_STYLE) != 0) { |
| float[] dashes = null; |
| float width = data.lineWidth; |
| switch (data.lineStyle) { |
| case SWT.LINE_SOLID: break; |
| case SWT.LINE_DASH: dashes = width != 0 ? LINE_DASH : LINE_DASH_ZERO; break; |
| case SWT.LINE_DOT: dashes = width != 0 ? LINE_DOT : LINE_DOT_ZERO; break; |
| case SWT.LINE_DASHDOT: dashes = width != 0 ? LINE_DASHDOT : LINE_DASHDOT_ZERO; break; |
| case SWT.LINE_DASHDOTDOT: dashes = width != 0 ? LINE_DASHDOTDOT : LINE_DASHDOTDOT_ZERO; break; |
| case SWT.LINE_CUSTOM: dashes = data.lineDashes; break; |
| } |
| if (dashes != null) { |
| double /*float*/[] lengths = new double /*float*/[dashes.length]; |
| for (int i = 0; i < lengths.length; i++) { |
| lengths[i] = width == 0 || data.lineStyle == SWT.LINE_CUSTOM ? dashes[i] : dashes[i] * width; |
| } |
| path.setLineDash(lengths, lengths.length, data.lineDashesOffset); |
| } else { |
| path.setLineDash(null, 0, 0); |
| } |
| } |
| if ((state & LINE_MITERLIMIT) != 0) { |
| path.setMiterLimit(data.lineMiterLimit); |
| } |
| if ((state & LINE_JOIN) != 0) { |
| int joinStyle = 0; |
| switch (data.lineJoin) { |
| case SWT.JOIN_MITER: joinStyle = OS.NSMiterLineJoinStyle; break; |
| case SWT.JOIN_ROUND: joinStyle = OS.NSRoundLineJoinStyle; break; |
| case SWT.JOIN_BEVEL: joinStyle = OS.NSBevelLineJoinStyle; break; |
| } |
| path.setLineJoinStyle(joinStyle); |
| } |
| if ((state & LINE_CAP) != 0) { |
| int capStyle = 0; |
| switch (data.lineCap) { |
| case SWT.CAP_ROUND: capStyle = OS.NSRoundLineCapStyle; break; |
| case SWT.CAP_FLAT: capStyle = OS.NSButtLineCapStyle; break; |
| case SWT.CAP_SQUARE: capStyle = OS.NSSquareLineCapStyle; break; |
| } |
| path.setLineCapStyle(capStyle); |
| } |
| if ((state & DRAW_OFFSET) != 0) { |
| data.drawXOffset = data.drawYOffset = 0; |
| NSSize size = new NSSize(); |
| size.width = size.height = 1; |
| if (data.transform != null) { |
| size = data.transform.transformSize(size); |
| } |
| double /*float*/ scaling = size.width; |
| if (scaling < 0) scaling = -scaling; |
| double /*float*/ strokeWidth = data.lineWidth * scaling; |
| if (strokeWidth == 0 || ((int)strokeWidth % 2) == 1) { |
| data.drawXOffset = 0.5f / scaling; |
| } |
| scaling = size.height; |
| if (scaling < 0) scaling = -scaling; |
| strokeWidth = data.lineWidth * scaling; |
| if (strokeWidth == 0 || ((int)strokeWidth % 2) == 1) { |
| data.drawYOffset = 0.5f / scaling; |
| } |
| } |
| return pool; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (image.type != SWT.BITMAP || image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| NSAutoreleasePool pool = checkGC(TRANSFORM | CLIPPING); |
| try { |
| if (data.image != null) { |
| int srcX = x, srcY = y, destX = 0, destY = 0; |
| NSSize srcSize = data.image.handle.size(); |
| int imgHeight = (int)srcSize.height; |
| int destWidth = (int)srcSize.width - x, destHeight = (int)srcSize.height - y; |
| int srcWidth = destWidth, srcHeight = destHeight; |
| NSGraphicsContext context = NSGraphicsContext.graphicsContextWithBitmapImageRep(image.getRepresentation()); |
| NSGraphicsContext.static_saveGraphicsState(); |
| NSGraphicsContext.setCurrentContext(context); |
| NSAffineTransform transform = NSAffineTransform.transform(); |
| NSSize size = image.handle.size(); |
| transform.translateXBy(0, size.height-(destHeight + 2 * destY)); |
| transform.concat(); |
| NSRect srcRect = new NSRect(); |
| srcRect.x = srcX; |
| srcRect.y = imgHeight - (srcY + srcHeight); |
| srcRect.width = srcWidth; |
| srcRect.height = srcHeight; |
| NSRect destRect = new NSRect(); |
| destRect.x = destX; |
| destRect.y = destY; |
| destRect.width = destWidth; |
| destRect.height = destHeight; |
| data.image.handle.drawInRect(destRect, srcRect, OS.NSCompositeCopy, 1); |
| NSGraphicsContext.static_restoreGraphicsState(); |
| return; |
| } |
| if (data.view != null) { |
| NSSize size = image.handle.size(); |
| NSView topView = getTopView(data.view); |
| NSRect rect = new NSRect(); |
| rect.x = x; |
| rect.y = y; |
| rect.width = size.width; |
| rect.height = size.height; |
| NSBitmapImageRep imageRep = topView.bitmapImageRepForCachingDisplayInRect(rect); |
| imageRep.setSize(size); |
| /* |
| * NSView.cacheDisplayInRect will cause an unexpected SWT.Paint event to be sent. |
| * This is handled by Control.cacheDisplayInRect_toBitmapImageRep(). |
| */ |
| topView.cacheDisplayInRect(rect, imageRep); |
| NSBitmapImageRep rep = image.getRepresentation(); |
| image.handle.addRepresentation(imageRep); |
| image.handle.removeRepresentation(rep); |
| return; |
| } |
| if (handle.isDrawingToScreen()) { |
| NSImage imageHandle = image.handle; |
| NSSize size = imageHandle.size(); |
| NSArray screens = null; |
| NSString key = null; |
| screens = NSScreen.screens(); |
| key = NSString.stringWith("NSScreenNumber"); |
| CGRect rect = new CGRect(); |
| rect.origin.x = x; |
| rect.origin.y = y; |
| rect.size.width = size.width; |
| rect.size.height = size.height; |
| int displayCount = 16; |
| long /*int*/ displays = C.malloc(4 * displayCount), countPtr = C.malloc(4); |
| if (OS.CGGetDisplaysWithRect(rect, displayCount, displays, countPtr) != 0) return; |
| int[] count = new int[1], display = new int[1]; |
| C.memmove(count, countPtr, C.PTR_SIZEOF); |
| for (int i = 0; i < count[0]; i++) { |
| C.memmove(display, displays + (i * 4), 4); |
| OS.CGDisplayBounds(display[0], rect); |
| double /*float*/ scaling = 1; |
| for (int j = 0; j < screens.count(); j++) { |
| NSScreen screen = new NSScreen(screens.objectAtIndex(j)); |
| if (display[0] == new NSNumber(screen.deviceDescription().objectForKey(key)).intValue()) { |
| scaling = screen.backingScaleFactor(); |
| break; |
| } |
| } |
| /* |
| * Add a high resolution image representation to the image if scaling factor is > 1 |
| */ |
| if (scaling > 1) { |
| int width = (int) (size.width * scaling); |
| int height = (int) (size.height * scaling); |
| NSBitmapImageRep rep = (NSBitmapImageRep)new NSBitmapImageRep().alloc(); |
| rep = rep.initWithBitmapDataPlanes(0, width, height, 8, 3, false, false, OS.NSDeviceRGBColorSpace, OS.NSAlphaFirstBitmapFormat | OS.NSAlphaNonpremultipliedBitmapFormat, width * 4, 32); |
| C.memset(rep.bitmapData(), 0xFF, width * height * 4); |
| imageHandle.addRepresentation(rep); |
| rep.release(); |
| } |
| long /*int*/ srcImage = 0; |
| srcImage = OS.CGDisplayCreateImage(display[0]); |
| if (srcImage != 0) { |
| copyArea(image, (int)(x * scaling - rect.origin.x), (int)(y * scaling - rect.origin.y), srcImage); |
| OS.CGImageRelease(srcImage); |
| } |
| } |
| C.free(displays); |
| C.free(countPtr); |
| } |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| void copyArea (Image image, int x, int y, long /*int*/ srcImage) { |
| if (srcImage == 0) return; |
| NSBitmapImageRep rep = image.getRepresentation(); |
| long /*int*/ bpc = rep.bitsPerSample(); |
| long /*int*/ width = rep.pixelsWide(); |
| long /*int*/ height = rep.pixelsHigh(); |
| long /*int*/ bpr = rep.bytesPerRow(); |
| long /*int*/ data = rep.bitmapData(); |
| long /*int*/ format = rep.bitmapFormat(); |
| int alphaInfo; |
| if (rep.hasAlpha()) { |
| alphaInfo = (format & OS.NSAlphaFirstBitmapFormat) != 0 ? OS.kCGImageAlphaFirst : OS.kCGImageAlphaLast; |
| } else { |
| alphaInfo = (format & OS.NSAlphaFirstBitmapFormat) != 0 ? OS.kCGImageAlphaNoneSkipFirst : OS.kCGImageAlphaNoneSkipLast; |
| } |
| long /*int*/ colorspace = OS.CGColorSpaceCreateDeviceRGB(); |
| long /*int*/ context = OS.CGBitmapContextCreate(data, width, height, bpc, bpr, colorspace, alphaInfo); |
| OS.CGColorSpaceRelease(colorspace); |
| if (context != 0) { |
| CGRect rect = new CGRect(); |
| rect.origin.x = -x; |
| rect.origin.y = y; |
| rect.size.width = OS.CGImageGetWidth(srcImage); |
| rect.size.height = OS.CGImageGetHeight(srcImage); |
| OS.CGContextTranslateCTM(context, 0, -(rect.size.height - height)); |
| OS.CGContextDrawImage(context, rect, srcImage); |
| OS.CGContextRelease(context); |
| } |
| } |
| |
| /** |
| * 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, boolean paint) { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width <= 0 || height <= 0) return; |
| int deltaX = destX - srcX, deltaY = destY - srcY; |
| if (deltaX == 0 && deltaY == 0) return; |
| NSAutoreleasePool pool = checkGC(TRANSFORM | CLIPPING); |
| try { |
| Image image = data.image; |
| if (image != null) { |
| NSImage imageHandle = image.handle; |
| NSSize size = imageHandle.size(); |
| int imgHeight = (int)size.height; |
| handle.saveGraphicsState(); |
| NSAffineTransform transform = NSAffineTransform.transform(); |
| transform.scaleXBy(1, -1); |
| transform.translateXBy(0, -(height + 2 * destY)); |
| transform.concat(); |
| NSRect srcRect = new NSRect(); |
| srcRect.x = srcX; |
| srcRect.y = imgHeight - (srcY + height); |
| srcRect.width = width; |
| srcRect.height = height; |
| NSRect destRect = new NSRect(); |
| destRect.x = destX; |
| destRect.y = destY; |
| destRect.width = width; |
| destRect.height = height; |
| imageHandle.drawInRect(destRect, srcRect, OS.NSCompositeCopy, 1); |
| handle.restoreGraphicsState(); |
| return; |
| } |
| if (data.view != null) { |
| NSView view = data.view; |
| NSRect visibleRect = view.visibleRect(); |
| if (visibleRect.width <= 0 || visibleRect.height <= 0) return; |
| NSRect damage = new NSRect(); |
| damage.x = srcX; |
| damage.y = srcY; |
| damage.width = width; |
| damage.height = height; |
| NSPoint dest = new NSPoint(); |
| dest.x = destX; |
| dest.y = destY; |
| |
| view.lockFocus(); |
| NSSize delta = new NSSize(); |
| delta.width = deltaX; |
| delta.height = deltaY; |
| view.scrollRect(damage, delta); |
| view.unlockFocus(); |
| |
| if (paint) { |
| boolean disjoint = (destX + width < srcX) || (srcX + width < destX) || (destY + height < srcY) || (srcY + height < destY); |
| if (disjoint) { |
| view.setNeedsDisplayInRect(damage); |
| } else { |
| if (deltaX != 0) { |
| int newX = destX - deltaX; |
| if (deltaX < 0) newX = destX + width; |
| damage.x = newX; |
| damage.width = Math.abs(deltaX); |
| view.setNeedsDisplayInRect(damage); |
| } |
| if (deltaY != 0) { |
| int newY = destY - deltaY; |
| if (deltaY < 0) newY = destY + height; |
| damage.x = srcX; |
| damage.y = newY; |
| damage.width = width; |
| damage.height = Math.abs (deltaY); |
| view.setNeedsDisplayInRect(damage); |
| } |
| } |
| |
| NSRect srcRect = new NSRect(); |
| srcRect.x = srcX; |
| srcRect.y = srcY; |
| srcRect.width = width; |
| srcRect.height = height; |
| OS.NSIntersectionRect(visibleRect, visibleRect, srcRect); |
| |
| if (!OS.NSEqualRects(visibleRect, srcRect)) { |
| if (srcRect.x != visibleRect.x) { |
| damage.x = srcRect.x + deltaX; |
| damage.y = srcRect.y + deltaY; |
| damage.width = visibleRect.x - srcRect.x; |
| damage.height = srcRect.height; |
| view.setNeedsDisplayInRect(damage); |
| } |
| if (visibleRect.x + visibleRect.width != srcRect.x + srcRect.width) { |
| damage.x = srcRect.x + visibleRect.width + deltaX; |
| damage.y = srcRect.y + deltaY; |
| damage.width = srcRect.width - visibleRect.width; |
| damage.height = srcRect.height; |
| view.setNeedsDisplayInRect(damage); |
| } |
| if (visibleRect.y != srcRect.y) { |
| damage.x = visibleRect.x + deltaX; |
| damage.y = srcRect.y + deltaY; |
| damage.width = visibleRect.width; |
| damage.height = visibleRect.y - srcRect.y; |
| view.setNeedsDisplayInRect(damage); |
| } |
| if (visibleRect.y + visibleRect.height != srcRect.y + srcRect.height) { |
| damage.x = visibleRect.x + deltaX; |
| damage.y = visibleRect.y + visibleRect.height + deltaY; |
| damage.width = visibleRect.width; |
| damage.height = srcRect.y + srcRect.height - (visibleRect.y + visibleRect.height); |
| view.setNeedsDisplayInRect(damage); |
| } |
| } |
| } |
| return; |
| } |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| static long /*int*/ createCGPathRef(NSBezierPath nsPath) { |
| long /*int*/ count = nsPath.elementCount(); |
| if (count > 0) { |
| long /*int*/ cgPath = OS.CGPathCreateMutable(); |
| if (cgPath == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| long /*int*/ points = C.malloc(NSPoint.sizeof * 3); |
| if (points == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| double /*float*/ [] pt = new double /*float*/ [6]; |
| for (int i = 0; i < count; i++) { |
| int element = (int)/*64*/nsPath.elementAtIndex(i, points); |
| switch (element) { |
| case OS.NSMoveToBezierPathElement: |
| C.memmove(pt, points, NSPoint.sizeof); |
| OS.CGPathMoveToPoint(cgPath, 0, pt[0], pt[1]); |
| break; |
| case OS.NSLineToBezierPathElement: |
| C.memmove(pt, points, NSPoint.sizeof); |
| OS.CGPathAddLineToPoint(cgPath, 0, pt[0], pt[1]); |
| break; |
| case OS.NSCurveToBezierPathElement: |
| C.memmove(pt, points, NSPoint.sizeof * 3); |
| OS.CGPathAddCurveToPoint(cgPath, 0, pt[0], pt[1], pt[2], pt[3], pt[4], pt[5]); |
| break; |
| case OS.NSClosePathBezierPathElement: |
| OS.CGPathCloseSubpath(cgPath); |
| break; |
| } |
| } |
| C.free(points); |
| return cgPath; |
| } |
| return 0; |
| } |
| |
| void createLayout () { |
| NSSize size = new NSSize(); |
| size.width = OS.MAX_TEXT_CONTAINER_SIZE; |
| size.height = OS.MAX_TEXT_CONTAINER_SIZE; |
| NSTextStorage textStorage = (NSTextStorage)new NSTextStorage().alloc().init(); |
| NSLayoutManager layoutManager = (NSLayoutManager)new NSLayoutManager().alloc().init(); |
| layoutManager.setBackgroundLayoutEnabled(NSThread.isMainThread()); |
| NSTextContainer textContainer = (NSTextContainer)new NSTextContainer().alloc(); |
| textContainer = textContainer.initWithContainerSize(size); |
| textContainer.setLineFragmentPadding(0); |
| textStorage.addLayoutManager(layoutManager); |
| layoutManager.addTextContainer(textContainer); |
| layoutManager.release(); |
| textContainer.release(); |
| data.textContainer = textContainer; |
| data.layoutManager = layoutManager; |
| data.textStorage = textStorage; |
| } |
| |
| NSAttributedString createString(String string, int flags, boolean draw) { |
| NSMutableDictionary dict = ((NSMutableDictionary)new NSMutableDictionary().alloc()).initWithCapacity(5); |
| Font font = data.font; |
| dict.setObject(font.handle, OS.NSFontAttributeName); |
| font.addTraits(dict); |
| if (draw) { |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) { |
| if (pattern.color != null) dict.setObject(pattern.color, OS.NSForegroundColorAttributeName); |
| } else { |
| NSColor fg = data.fg; |
| if (fg == null) { |
| double /*float*/ [] color = data.foreground; |
| fg = data.fg = NSColor.colorWithDeviceRed(color[0], color[1], color[2], data.alpha / 255f); |
| fg.retain(); |
| } |
| dict.setObject(fg, OS.NSForegroundColorAttributeName); |
| } |
| } |
| if ((flags & SWT.DRAW_TAB) == 0) { |
| dict.setObject(device.paragraphStyle, OS.NSParagraphStyleAttributeName); |
| } |
| int length = string.length(); |
| char[] chars = new char[length]; |
| string.getChars(0, length, chars, 0); |
| if ((flags & SWT.DRAW_MNEMONIC) !=0 || (flags & SWT.DRAW_DELIMITER) == 0) { |
| int i=0, j=0; |
| while (i < chars.length) { |
| char c = chars [j++] = chars [i++]; |
| switch (c) { |
| case '&': { |
| if ((flags & SWT.DRAW_MNEMONIC) != 0) { |
| if (i == chars.length) {continue;} |
| if (chars [i] == '&') {i++; continue;} |
| j--; |
| } |
| break; |
| } |
| case '\r': |
| case '\n': { |
| if ((flags & SWT.DRAW_DELIMITER) == 0) { |
| if (c == '\r' && i != chars.length && chars[i] == '\n') i++; |
| j--; |
| } |
| break; |
| } |
| } |
| } |
| length = j; |
| } |
| NSString str = ((NSString)new NSString().alloc()).initWithCharacters(chars, length); |
| NSAttributedString attribStr = ((NSAttributedString)new NSAttributedString().alloc()).initWithString(str, dict); |
| dict.release(); |
| str.release(); |
| return attribStr; |
| } |
| |
| NSBezierPath createNSBezierPath (long /*int*/ cgPath) { |
| Callback callback = new Callback(this, "applierFunc", 2); |
| long /*int*/ proc = callback.getAddress(); |
| if (proc == 0) SWT.error(SWT.ERROR_NO_MORE_CALLBACKS); |
| count = typeCount = 0; |
| element = new CGPathElement(); |
| OS.CGPathApply(cgPath, 0, proc); |
| types = new byte[typeCount]; |
| points = new double /*float*/ [count]; |
| point = new double /*float*/ [6]; |
| count = typeCount = 0; |
| OS.CGPathApply(cgPath, 0, proc); |
| callback.dispose(); |
| |
| NSBezierPath bezierPath = NSBezierPath.bezierPath(); |
| NSPoint nsPoint = new NSPoint(), nsPoint2 = new NSPoint(), nsPoint3 = new NSPoint(); |
| for (int i = 0, j = 0; i < types.length; i++) { |
| switch (types[i]) { |
| case SWT.PATH_MOVE_TO: |
| nsPoint.x = points[j++]; |
| nsPoint.y = points[j++]; |
| bezierPath.moveToPoint(nsPoint); |
| break; |
| case SWT.PATH_LINE_TO: |
| nsPoint.x = points[j++]; |
| nsPoint.y = points[j++]; |
| bezierPath.lineToPoint(nsPoint); |
| break; |
| case SWT.PATH_CUBIC_TO: |
| nsPoint2.x = points[j++]; |
| nsPoint2.y = points[j++]; |
| nsPoint3.x = points[j++]; |
| nsPoint3.y = points[j++]; |
| nsPoint.x = points[j++]; |
| nsPoint.y = points[j++]; |
| bezierPath.curveToPoint(nsPoint, nsPoint2, nsPoint3); |
| break; |
| case SWT.PATH_QUAD_TO: |
| double /*float*/ currentX = nsPoint.x; |
| double /*float*/ currentY = nsPoint.y; |
| nsPoint2.x = points[j++]; |
| nsPoint2.y = points[j++]; |
| nsPoint.x = points[j++]; |
| nsPoint.y = points[j++]; |
| double /*float*/ x0 = currentX; |
| double /*float*/ y0 = currentY; |
| double /*float*/ cx1 = x0 + 2 * (nsPoint2.x - x0) / 3; |
| double /*float*/ cy1 = y0 + 2 * (nsPoint2.y - y0) / 3; |
| double /*float*/ cx2 = cx1 + (nsPoint.x - x0) / 3; |
| double /*float*/ cy2 = cy1 + (nsPoint.y - y0) / 3; |
| nsPoint2.x = cx1; |
| nsPoint2.y = cy1; |
| nsPoint3.x = cx2; |
| nsPoint3.y = cy2; |
| bezierPath.curveToPoint(nsPoint, nsPoint2, nsPoint3); |
| break; |
| case SWT.PATH_CLOSE: |
| bezierPath.closePath(); |
| break; |
| default: |
| dispose(); |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| element = null; |
| types = null; |
| points = null; |
| nsPoint = null; |
| return bezierPath; |
| } |
| |
| @Override |
| void destroy() { |
| /* Free resources */ |
| Image image = data.image; |
| if (image != null) { |
| image.memGC = null; |
| image.createAlpha(); |
| } |
| if (data.textStorage != null) data.textStorage.release(); |
| data.textStorage = null; |
| data.layoutManager = null; |
| data.textContainer = null; |
| if (data.fg != null) data.fg.release(); |
| if (data.bg != null) data.bg.release(); |
| if (data.path != null) data.path.release(); |
| if (data.clipPath != null) data.clipPath.release(); |
| if (data.visiblePath != null) data.visiblePath.release(); |
| if (data.transform != null) data.transform.release(); |
| if (data.inverseTransform != null) data.inverseTransform.release(); |
| data.path = data.clipPath = data.visiblePath = null; |
| data.transform = data.inverseTransform = null; |
| data.fg = data.bg = null; |
| |
| /* Dispose the GC */ |
| if (drawable != null) drawable.internal_dispose_GC(handle.id, data); |
| handle.restoreGraphicsState(); |
| handle.release(); |
| |
| drawable = null; |
| data.image = null; |
| data = null; |
| handle = 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| if (width == 0 || height == 0 || arcAngle == 0) return; |
| NSAutoreleasePool pool = checkGC(DRAW); |
| try { |
| handle.saveGraphicsState(); |
| NSAffineTransform transform = NSAffineTransform.transform(); |
| double /*float*/ xOffset = data.drawXOffset, yOffset = data.drawYOffset; |
| transform.translateXBy(x + xOffset + width / 2f, y + yOffset + height / 2f); |
| transform.scaleXBy(width / 2f, height / 2f); |
| NSBezierPath path = data.path; |
| NSPoint center = new NSPoint(); |
| float sAngle = -startAngle; |
| float eAngle = -(startAngle + arcAngle); |
| path.appendBezierPathWithArcWithCenter(center, 1, sAngle, eAngle, arcAngle>0); |
| path.transformUsingAffineTransform(transform); |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| strokePattern(path, pattern); |
| } else { |
| path.stroke(); |
| } |
| path.removeAllPoints(); |
| handle.restoreGraphicsState(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| NSAutoreleasePool pool = checkGC(CLIPPING | TRANSFORM); |
| try { |
| int[] metric = new int[1]; |
| OS.GetThemeMetric(OS.kThemeMetricFocusRectOutset, metric); |
| CGRect rect = new CGRect(); |
| rect.origin.x = x + metric[0]; |
| rect.origin.y = y + metric[0]; |
| rect.size.width = width - metric[0] * 2; |
| rect.size.height = height - metric[0] * 2; |
| OS.HIThemeDrawFocusRect(rect, true, handle.graphicsPort(), OS.kHIThemeOrientationNormal); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (image == 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 points to copy from the source |
| * @param srcHeight the height in points 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 points of the destination rectangle |
| * @param destHeight the height in points 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (srcWidth == 0 || srcHeight == 0 || destWidth == 0 || destHeight == 0) return; |
| if (srcX < 0 || srcY < 0 || srcWidth < 0 || srcHeight < 0 || destWidth < 0 || destHeight < 0) { |
| SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| if (image == 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, boolean simple) { |
| NSImage imageHandle = srcImage.handle; |
| NSSize size = imageHandle.size(); |
| int imgWidth = (int)size.width; |
| int imgHeight = (int)size.height; |
| if (simple) { |
| srcWidth = destWidth = imgWidth; |
| srcHeight = destHeight = imgHeight; |
| } else { |
| simple = srcX == 0 && srcY == 0 && |
| srcWidth == destWidth && destWidth == imgWidth && |
| srcHeight == destHeight && destHeight == imgHeight; |
| if (srcX + srcWidth > imgWidth || srcY + srcHeight > imgHeight) { |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| NSAutoreleasePool pool = checkGC(CLIPPING | TRANSFORM); |
| try { |
| if (srcImage.memGC != null) { |
| srcImage.createAlpha(); |
| } |
| handle.saveGraphicsState(); |
| NSAffineTransform transform = NSAffineTransform.transform(); |
| transform.scaleXBy(1, -1); |
| transform.translateXBy(0, -(destHeight + 2 * destY)); |
| transform.concat(); |
| NSRect srcRect = new NSRect(); |
| srcRect.x = srcX; |
| srcRect.y = imgHeight - (srcY + srcHeight); |
| srcRect.width = srcWidth; |
| srcRect.height = srcHeight; |
| NSRect destRect = new NSRect(); |
| destRect.x = destX; |
| destRect.y = destY; |
| destRect.width = destWidth; |
| destRect.height = destHeight; |
| imageHandle.drawInRect(destRect, srcRect, OS.NSCompositeSourceOver, data.alpha / 255f); |
| handle.restoreGraphicsState(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (x1 == x2 && y1 == y2 && data.lineWidth <= 1) { |
| drawPoint(x1, y1); |
| return; |
| } |
| NSAutoreleasePool pool = checkGC(DRAW); |
| try { |
| NSBezierPath path = data.path; |
| NSPoint pt = new NSPoint(); |
| pt.x = x1 + data.drawXOffset; |
| pt.y = y1 + data.drawYOffset; |
| path.moveToPoint(pt); |
| pt.x = x2 + data.drawXOffset; |
| pt.y = y2 + data.drawYOffset; |
| path.lineToPoint(pt); |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| strokePattern(path, pattern); |
| } else { |
| path.stroke(); |
| } |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| NSAutoreleasePool pool = checkGC(DRAW); |
| try { |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| NSBezierPath path = data.path; |
| NSRect rect = new NSRect(); |
| rect.x = x + data.drawXOffset; |
| rect.y = y + data.drawXOffset; |
| rect.width = width; |
| rect.height = height; |
| path.appendBezierPathWithOvalInRect(rect); |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| strokePattern(path, pattern); |
| } else { |
| path.stroke(); |
| } |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (path.handle == null) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| NSAutoreleasePool pool = checkGC(DRAW); |
| try { |
| handle.saveGraphicsState(); |
| NSAffineTransform transform = NSAffineTransform.transform(); |
| transform.translateXBy(data.drawXOffset, data.drawYOffset); |
| transform.concat(); |
| NSBezierPath drawPath = data.path; |
| drawPath.appendBezierPath(path.handle); |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| strokePattern(drawPath, pattern); |
| } else { |
| drawPath.stroke(); |
| } |
| drawPath.removeAllPoints(); |
| handle.restoreGraphicsState(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| NSAutoreleasePool pool = checkGC(FOREGROUND_FILL | CLIPPING | TRANSFORM); |
| try { |
| NSRect rect = new NSRect(); |
| rect.x = x; |
| rect.y = y; |
| rect.width = 1; |
| rect.height = 1; |
| NSBezierPath path = data.path; |
| path.appendBezierPathWithRect(rect); |
| path.fill(); |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT if pointArray is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawPolygon(int[] pointArray) { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (pointArray.length < 4) return; |
| NSAutoreleasePool pool = checkGC(DRAW); |
| try { |
| double /*float*/ xOffset = data.drawXOffset, yOffset = data.drawYOffset; |
| NSBezierPath path = data.path; |
| NSPoint pt = new NSPoint(); |
| pt.x = pointArray[0] + xOffset; |
| pt.y = pointArray[1] + yOffset; |
| path.moveToPoint(pt); |
| int end = pointArray.length / 2 * 2; |
| for (int i = 2; i < end; i+=2) { |
| pt.x = pointArray[i] + xOffset; |
| pt.y = pointArray[i+1] + yOffset; |
| path.lineToPoint(pt); |
| } |
| path.closePath(); |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| strokePattern(path, pattern); |
| } else { |
| path.stroke(); |
| } |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the point array is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawPolyline(int[] pointArray) { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (pointArray.length < 4) return; |
| NSAutoreleasePool pool = checkGC(DRAW); |
| try { |
| double /*float*/ xOffset = data.drawXOffset, yOffset = data.drawYOffset; |
| NSBezierPath path = data.path; |
| NSPoint pt = new NSPoint(); |
| pt.x = pointArray[0] + xOffset; |
| pt.y = pointArray[1] + yOffset; |
| path.moveToPoint(pt); |
| int end = pointArray.length / 2 * 2; |
| for (int i = 2; i < end; i+=2) { |
| pt.x = pointArray[i] + xOffset; |
| pt.y = pointArray[i+1] + yOffset; |
| path.lineToPoint(pt); |
| } |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| strokePattern(path, pattern); |
| } else { |
| path.stroke(); |
| } |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| NSAutoreleasePool pool = checkGC(DRAW); |
| try { |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| NSRect rect = new NSRect(); |
| rect.x = x + data.drawXOffset; |
| rect.y = y + data.drawYOffset; |
| rect.width = width; |
| rect.height = height; |
| NSBezierPath path = data.path; |
| path.appendBezierPathWithRect(rect); |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| strokePattern(path, pattern); |
| } else { |
| path.stroke(); |
| } |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (rect == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (arcWidth == 0 || arcHeight == 0) { |
| drawRectangle(x, y, width, height); |
| return; |
| } |
| NSAutoreleasePool pool = checkGC(DRAW); |
| try { |
| NSBezierPath path = data.path; |
| NSRect rect = new NSRect(); |
| rect.x = x + data.drawXOffset; |
| rect.y = y + data.drawYOffset; |
| rect.width = width; |
| rect.height = height; |
| path.appendBezierPathWithRoundedRect(rect, arcWidth / 2f, arcHeight / 2f); |
| Pattern pattern = data.foregroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| strokePattern(path, pattern); |
| } else { |
| path.stroke(); |
| } |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * Draws the given string, 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 string is being drawn will be filled with the receiver's |
| * background color. |
| * |
| * @param string the string to be drawn |
| * @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawString (String string, int x, int y) { |
| drawString(string, x, y, false); |
| } |
| |
| /** |
| * Draws the given string, 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 string is being |
| * drawn will not be modified, otherwise it will be filled with the |
| * receiver's background color. |
| * |
| * @param string the string to be drawn |
| * @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn |
| * @param isTransparent if <code>true</code> the background will be transparent, otherwise it will be opaque |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawString(String string, int x, int y, boolean isTransparent) { |
| drawText(string, x, y, isTransparent ? SWT.DRAW_TRANSPARENT : 0); |
| } |
| |
| /** |
| * Draws the given string, 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 string the string 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 IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawText(String string, int x, int y) { |
| drawText(string, x, y, SWT.DRAW_DELIMITER | SWT.DRAW_TAB); |
| } |
| |
| /** |
| * Draws the given string, 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 string the string 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 IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawText(String string, int x, int y, boolean isTransparent) { |
| int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB; |
| if (isTransparent) flags |= SWT.DRAW_TRANSPARENT; |
| drawText(string, x, y, flags); |
| } |
| |
| /** |
| * Draws the given string, 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 string the string 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 IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawText (String string, int x, int y, int flags) { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| NSAutoreleasePool pool = checkGC(CLIPPING | TRANSFORM | FONT | FOREGROUND_FILL); |
| try { |
| int length = string.length(); |
| if (length == 0) return; |
| boolean mode = true; |
| switch (data.textAntialias) { |
| case SWT.DEFAULT: |
| /* Printer is off by default */ |
| if (!handle.isDrawingToScreen()) mode = false; |
| break; |
| case SWT.OFF: mode = false; break; |
| case SWT.ON: mode = true; break; |
| } |
| handle.saveGraphicsState(); |
| handle.setShouldAntialias(mode); |
| if (data.textStorage == null) createLayout(); |
| NSAttributedString attribStr = createString(string, flags, true); |
| data.textStorage.setAttributedString(attribStr); |
| attribStr.release(); |
| NSPoint pt = new NSPoint(); |
| pt.x = x; |
| pt.y = y; |
| NSRange range = data.layoutManager.glyphRangeForTextContainer(data.textContainer); |
| if ((flags & SWT.DRAW_TRANSPARENT) == 0) { |
| NSRect rect = data.layoutManager.usedRectForTextContainer(data.textContainer); |
| rect.x = x; |
| rect.y = y; |
| Pattern pattern = data.backgroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| NSBezierPath path = NSBezierPath.bezierPathWithRect(rect); |
| fillPattern(path, pattern); |
| } else { |
| NSColor bg = data.bg; |
| if (bg == null) { |
| double /*float*/ [] color = data.background; |
| bg = data.bg = NSColor.colorWithDeviceRed(color[0], color[1], color[2], data.alpha / 255f); |
| bg.retain(); |
| } |
| bg.setFill(); |
| NSBezierPath.fillRect(rect); |
| } |
| } |
| data.layoutManager.drawGlyphsForGlyphRange(range, pt); |
| handle.restoreGraphicsState(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 |
| */ |
| @Override |
| public boolean equals(Object object) { |
| if (object == this) return true; |
| if (!(object instanceof GC)) return false; |
| return handle == ((GC)object).handle; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| if (width == 0 || height == 0 || arcAngle == 0) return; |
| NSAutoreleasePool pool = checkGC(FILL); |
| try { |
| handle.saveGraphicsState(); |
| NSAffineTransform transform = NSAffineTransform.transform(); |
| double /*float*/ xOffset = data.drawXOffset, yOffset = data.drawYOffset; |
| transform.translateXBy(x + xOffset + width / 2f, y + yOffset + height / 2f); |
| transform.scaleXBy(width / 2f, height / 2f); |
| NSBezierPath path = data.path; |
| NSPoint center = new NSPoint(); |
| path.moveToPoint(center); |
| float sAngle = -startAngle; |
| float eAngle = -(startAngle + arcAngle); |
| path.appendBezierPathWithArcWithCenter(center, 1, sAngle, eAngle, arcAngle>0); |
| path.closePath(); |
| path.transformUsingAffineTransform(transform); |
| Pattern pattern = data.backgroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| fillPattern(path, pattern); |
| } else { |
| path.fill(); |
| } |
| path.removeAllPoints(); |
| handle.restoreGraphicsState(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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, boolean vertical) { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if ((width == 0) || (height == 0)) return; |
| NSAutoreleasePool pool = checkGC(CLIPPING | TRANSFORM); |
| try { |
| RGB backgroundRGB, foregroundRGB; |
| backgroundRGB = getBackground().getRGB(); |
| foregroundRGB = getForeground().getRGB(); |
| |
| RGB fromRGB, toRGB; |
| fromRGB = foregroundRGB; |
| toRGB = backgroundRGB; |
| boolean 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.equals(toRGB)) { |
| fillRectangle(x, y, width, height); |
| } else { |
| NSColor startingColor = NSColor.colorWithDeviceRed(fromRGB.red / 255f, fromRGB.green / 255f, fromRGB.blue / 255f, data.alpha / 255f); |
| NSColor endingColor = NSColor.colorWithDeviceRed(toRGB.red / 255f, toRGB.green / 255f, toRGB.blue / 255f, data.alpha / 255f); |
| NSGradient gradient = ((NSGradient)new NSGradient().alloc()).initWithStartingColor(startingColor, endingColor); |
| NSRect rect = new NSRect(); |
| rect.x = x; |
| rect.y = y; |
| rect.width = width; |
| rect.height = height; |
| gradient.drawInRect(rect, vertical ? 90 : 0); |
| gradient.release(); |
| } |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| NSAutoreleasePool pool = checkGC(FILL); |
| try { |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| NSBezierPath path = data.path; |
| NSRect rect = new NSRect(); |
| rect.x = x; |
| rect.y = y; |
| rect.width = width; |
| rect.height = height; |
| path.appendBezierPathWithOvalInRect(rect); |
| Pattern pattern = data.backgroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| fillPattern(path, pattern); |
| } else { |
| path.fill(); |
| } |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| void fillPattern(NSBezierPath path, Pattern pattern) { |
| handle.saveGraphicsState(); |
| path.addClip(); |
| NSRect bounds = path.bounds(); |
| NSPoint start = new NSPoint(); |
| start.x = pattern.pt1.x; |
| start.y = pattern.pt1.y; |
| NSPoint end = new NSPoint(); |
| end.x = pattern.pt2.x; |
| end.y = pattern.pt2.y; |
| double /*float*/ difx = end.x - start.x; |
| double /*float*/ dify = end.y - start.y; |
| if (difx == 0 && dify == 0) { |
| double /*float*/ [] color = pattern.color1; |
| NSColor.colorWithDeviceRed(color[0], color[1], color[2], data.alpha / 255f).setFill(); |
| path.fill(); |
| handle.restoreGraphicsState(); |
| return; |
| } |
| double /*float*/ startx, starty, endx, endy; |
| if (difx == 0 || dify == 0) { |
| startx = bounds.x; |
| starty = bounds.y; |
| endx = bounds.x + bounds.width; |
| endy = bounds.y + bounds.height; |
| if (difx < 0 || dify < 0) { |
| startx = endx; |
| starty = endy; |
| endx = bounds.x; |
| endy = bounds.y; |
| } |
| } else { |
| double /*float*/ m = (end.y-start.y)/(end.x - start.x); |
| double /*float*/ b = end.y - (m * end.x); |
| double /*float*/ m2 = -1/m; //perpendicular slope |
| double /*float*/ b2 = bounds.y - (m2 * bounds.x); |
| startx = endx = (b - b2) / (m2 - m); |
| b2 = (bounds.y + bounds.height) - (m2 * bounds.x); |
| double /*float*/ x2 = (b - b2) / (m2 - m); |
| startx = difx > 0 ? Math.min(startx, x2) : Math.max(startx, x2); |
| endx = difx < 0 ? Math.min(endx, x2) : Math.max(endx, x2); |
| b2 = bounds.y - (m2 * (bounds.x + bounds.width)); |
| x2 = (b - b2) / (m2 - m); |
| startx = difx > 0 ? Math.min(startx, x2) : Math.max(startx, x2); |
| endx = difx < 0 ? Math.min(endx, x2) : Math.max(endx, x2); |
| b2 = (bounds.y + bounds.height) - (m2 * (bounds.x + bounds.width)); |
| x2 = (b - b2) / (m2 - m); |
| startx = difx > 0 ? Math.min(startx, x2) : Math.max(startx, x2); |
| endx = difx < 0 ? Math.min(endx, x2) : Math.max(endx, x2); |
| starty = (m * startx) + b; |
| endy = (m * endx) + b; |
| } |
| if (difx != 0) { |
| while ((difx > 0 && start.x >= startx) || (difx < 0 && start.x <= startx)) { |
| start.x -= difx; |
| start.y -= dify; |
| } |
| } else { |
| while ((dify > 0 && start.y >= starty) || (dify < 0 && start.y <= starty)) { |
| start.x -= difx; |
| start.y -= dify; |
| } |
| } |
| end.x = start.x; |
| end.y = start.y; |
| do { |
| end.x += difx; |
| end.y += dify; |
| pattern.gradient.drawFromPoint(start, end, 0); |
| start.x = end.x; |
| start.y = end.y; |
| } while ( |
| (difx > 0 && end.x <= endx) || |
| (difx < 0 && end.x >= endx) || |
| (difx == 0 && ((dify > 0 && end.y <= endy) || (dify < 0 && end.y >= endy))) |
| ); |
| handle.restoreGraphicsState(); |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (path.handle == null) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| NSAutoreleasePool pool = checkGC(FILL); |
| try { |
| NSBezierPath drawPath = data.path; |
| drawPath.appendBezierPath(path.handle); |
| Pattern pattern = data.backgroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| fillPattern(drawPath, pattern); |
| } else { |
| drawPath.fill(); |
| } |
| drawPath.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT if pointArray is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #drawPolygon |
| */ |
| public void fillPolygon(int[] pointArray) { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (pointArray.length < 4) return; |
| NSAutoreleasePool pool = checkGC(FILL); |
| try { |
| NSBezierPath path = data.path; |
| NSPoint pt = new NSPoint(); |
| pt.x = pointArray[0]; |
| pt.y = pointArray[1]; |
| path.moveToPoint(pt); |
| int end = pointArray.length / 2 * 2; |
| for (int i = 2; i < end; i+=2) { |
| pt.x = pointArray[i]; |
| pt.y = pointArray[i+1]; |
| path.lineToPoint(pt); |
| } |
| path.closePath(); |
| Pattern pattern = data.backgroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| fillPattern(path, pattern); |
| } else { |
| path.fill(); |
| } |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| NSAutoreleasePool pool = checkGC(FILL); |
| try { |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| NSRect rect = new NSRect(); |
| rect.x = x; |
| rect.y = y; |
| rect.width = width; |
| rect.height = height; |
| NSBezierPath path = data.path; |
| path.appendBezierPathWithRect(rect); |
| Pattern pattern = data.backgroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| fillPattern(path, pattern); |
| } else { |
| path.fill(); |
| } |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (rect == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (arcWidth == 0 || arcHeight == 0) { |
| fillRectangle(x, y, width, height); |
| return; |
| } |
| NSAutoreleasePool pool = checkGC(FILL); |
| try { |
| NSBezierPath path = data.path; |
| NSRect rect = new NSRect(); |
| rect.x = x; |
| rect.y = y; |
| rect.width = width; |
| rect.height = height; |
| path.appendBezierPathWithRoundedRect(rect, arcWidth / 2f, arcHeight / 2f); |
| Pattern pattern = data.backgroundPattern; |
| if (pattern != null) setPatternPhase(pattern); |
| if (pattern != null && pattern.gradient != null) { |
| fillPattern(path, pattern); |
| } else { |
| path.fill(); |
| } |
| path.removeAllPoints(); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| void strokePattern(NSBezierPath path, Pattern pattern) { |
| handle.saveGraphicsState(); |
| long /*int*/ cgPath = createCGPathRef(path); |
| long /*int*/ cgContext = handle.graphicsPort(); |
| OS.CGContextSaveGState(cgContext); |
| initCGContext(cgContext); |
| OS.CGContextAddPath(cgContext, cgPath); |
| OS.CGContextReplacePathWithStrokedPath(cgContext); |
| OS.CGPathRelease(cgPath); |
| cgPath = 0; |
| cgPath = OS.CGContextCopyPath(cgContext); |
| if (cgPath == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| OS.CGContextRestoreGState(cgContext); |
| NSBezierPath strokePath = createNSBezierPath(cgPath); |
| OS.CGPathRelease(cgPath); |
| fillPattern(strokePath, pattern); |
| handle.restoreGraphicsState(); |
| } |
| |
| void flush () { |
| handle.flushGraphics(); |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| //NOT DONE |
| return stringExtent(new String(new char[]{ch})).x; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return Color.cocoa_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 == null) SWT.error(SWT.ERROR_WIDGET_DISPOSED); |
| return data.backgroundPattern; |
| } |
| |
| /** |
| * 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 boolean getAdvanced() { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return true; |
| } |
| |
| /** |
| * 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 == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.antialias; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| //NOT DONE |
| return stringExtent(new String(new char[]{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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| NSRect rect = null; |
| if (data.view != null) { |
| rect = data.view.visibleRect(); |
| } else { |
| rect = new NSRect(); |
| if (data.image != null) { |
| NSSize size = data.image.handle.size(); |
| rect.width = size.width; |
| rect.height = size.height; |
| } else if (data.size != null) { |
| rect.width = data.size.width; |
| rect.height = data.size.height; |
| } |
| } |
| if (data.paintRect != null || data.clipPath != null || data.inverseTransform != null) { |
| if (data.paintRect != null) { |
| OS.NSIntersectionRect(rect, rect, data.paintRect); |
| } |
| if (data.clipPath != null) { |
| NSRect clip = data.clipPath.bounds(); |
| clip.x = (int)clip.x; |
| clip.y = (int)clip.y; |
| OS.NSIntersectionRect(rect, rect, clip); |
| } |
| if (data.inverseTransform != null && rect.width > 0 && rect.height > 0) { |
| NSPoint pt = new NSPoint(); |
| pt.x = rect.x; |
| pt.y = rect.y; |
| NSSize size = new NSSize(); |
| size.width = rect.width; |
| size.height = rect.height; |
| pt = data.inverseTransform.transformPoint(pt); |
| size = data.inverseTransform.transformSize(size); |
| rect.x = pt.x; |
| rect.y = pt.y; |
| rect.width = size.width; |
| rect.height = size.height; |
| } |
| } |
| return new Rectangle((int)rect.x, (int)rect.y, (int)rect.width, (int)rect.height); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (region == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| region.subtract(region); |
| NSRect rect = null; |
| if (data.view != null) { |
| rect = data.view.visibleRect(); |
| } else { |
| rect = new NSRect(); |
| if (data.image != null) { |
| NSSize size = data.image.handle.size(); |
| rect.width = size.width; |
| rect.height = size.height; |
| } else if (data.size != null) { |
| rect.width = data.size.width; |
| rect.height = data.size.height; |
| } |
| } |
| region.add((int)rect.x, (int)rect.y, (int)rect.width, (int)rect.height); |
| NSRect paintRect = data.paintRect; |
| if (paintRect != null) { |
| region.intersect((int)paintRect.x, (int)paintRect.y, (int)paintRect.width, (int)paintRect.height); |
| } |
| if (data.clipPath != null) { |
| NSBezierPath clip = data.clipPath.bezierPathByFlatteningPath(); |
| int count = (int)/*64*/clip.elementCount(); |
| int pointCount = 0; |
| Region clipRgn = new Region(device); |
| int[] pointArray = new int[count * 2]; |
| long /*int*/ points = C.malloc(NSPoint.sizeof); |
| if (points == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| NSPoint pt = new NSPoint(); |
| for (int i = 0; i < count; i++) { |
| int element = (int)/*64*/clip.elementAtIndex(i, points); |
| switch (element) { |
| case OS.NSMoveToBezierPathElement: |
| if (pointCount != 0) clipRgn.add(pointArray, pointCount); |
| pointCount = 0; |
| OS.memmove(pt, points, NSPoint.sizeof); |
| pointArray[pointCount++] = (int)pt.x; |
| pointArray[pointCount++] = (int)pt.y; |
| break; |
| case OS.NSLineToBezierPathElement: |
| OS.memmove(pt, points, NSPoint.sizeof); |
| pointArray[pointCount++] = (int)pt.x; |
| pointArray[pointCount++] = (int)pt.y; |
| break; |
| case OS.NSClosePathBezierPathElement: |
| if (pointCount != 0) clipRgn.add(pointArray, pointCount); |
| pointCount = 0; |
| break; |
| } |
| } |
| if (pointCount != 0) clipRgn.add(pointArray, pointCount); |
| C.free(points); |
| region.intersect(clipRgn); |
| clipRgn.dispose(); |
| } |
| if (data.inverseTransform != null) { |
| region.convertRgn(data.inverseTransform); |
| } |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.fillRule; |
| } |
| |
| /** |
| * 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 == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| NSAutoreleasePool pool = checkGC(FONT); |
| try { |
| if (data.textStorage == null) createLayout(); |
| |
| if (data.font.metrics == null) { |
| String s = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; //$NON-NLS-1$ |
| NSMutableDictionary dict = ((NSMutableDictionary)new NSMutableDictionary().alloc()).initWithCapacity(3); |
| dict.setObject(data.font.handle, OS.NSFontAttributeName); |
| data.font.addTraits(dict); |
| NSAttributedString attribStr = ((NSAttributedString)new NSAttributedString().alloc()).initWithString(NSString.stringWith(s), dict); |
| data.textStorage.setAttributedString(attribStr); |
| attribStr.release(); |
| dict.release(); |
| NSLayoutManager layoutManager = data.layoutManager; |
| layoutManager.glyphRangeForTextContainer(data.textContainer); |
| NSRect rect = layoutManager.usedRectForTextContainer(data.textContainer); |
| double avgWidth = Math.ceil(rect.width) / s.length(); |
| int ascent = (int)layoutManager.defaultBaselineOffsetForFont(data.font.handle); |
| int height = (int)layoutManager.defaultLineHeightForFont(data.font.handle); |
| data.font.metrics = FontMetrics.cocoa_new(ascent, height - ascent, avgWidth, 0, height); |
| } |
| |
| return data.font.metrics; |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_WIDGET_DISPOSED); |
| return Color.cocoa_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 == null) SWT.error(SWT.ERROR_WIDGET_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 |
| * |
| * @noreference This method is not intended to be referenced by clients. |
| * |
| * @since 3.2 |
| */ |
| public GCData getGCData() { |
| if (handle == null) SWT.error(SWT.ERROR_WIDGET_DISPOSED); |
| NSAutoreleasePool pool = checkGC(TRANSFORM | CLIPPING); |
| uncheckGC(pool); |
| 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int interpolation = (int)/*64*/handle.imageInterpolation(); |
| switch (interpolation) { |
| case OS.NSImageInterpolationDefault: return SWT.DEFAULT; |
| case OS.NSImageInterpolationNone: return SWT.NONE; |
| case OS.NSImageInterpolationLow: return SWT.LOW; |
| case OS.NSImageInterpolationHigh: return SWT.HIGH; |
| } |
| return SWT.DEFAULT; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| float[] dashes = null; |
| if (data.lineDashes != 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 == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.lineDashes == null) return null; |
| int[] lineDashes = new int[data.lineDashes.length]; |
| for (int i = 0; i < lineDashes.length; i++) { |
| lineDashes[i] = (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 == 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 == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return (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 == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.textAntialias; |
| } |
| |
| // Internal methos that returns the topView of the Control. It's the same view that would be returned |
| // by Control.topView(). But, we don't use Control.topView() since classes in the graphics package |
| // are not supposed to reference the classes in widgets package. |
| NSView getTopView(NSView view) { |
| if (view != null) { |
| NSView contentView = view.superview(); |
| if (contentView != null && contentView.isKindOfClass(OS.class_NSClipView)) { |
| NSView superView = contentView.superview(); |
| if (superView != null && superView.isKindOfClass(OS.class_NSScrollView)) { |
| NSScrollView scrollView = new NSScrollView(superView.id); |
| if (scrollView.documentView() != null) { |
| if (scrollView.documentView().id == view.id) { |
| return superView; |
| } |
| } |
| } |
| } |
| } |
| return view; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (transform == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| NSAffineTransform cmt = data.transform; |
| if (cmt != null) { |
| NSAffineTransformStruct struct = cmt.transformStruct(); |
| transform.handle.setTransformStruct(struct); |
| } 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 boolean getXORMode() { |
| if (handle == 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 |
| */ |
| @Override |
| public int hashCode() { |
| return handle != null ? (int)/*64*/handle.id : 0; |
| } |
| |
| void init(Drawable drawable, GCData data, long /*int*/ context) { |
| if (data.foreground != null) data.state &= ~(FOREGROUND | FOREGROUND_FILL); |
| if (data.background != null) data.state &= ~BACKGROUND; |
| if (data.font != null) data.state &= ~FONT; |
| data.state &= ~DRAW_OFFSET; |
| |
| Image image = data.image; |
| if (image != null) image.memGC = this; |
| this.drawable = drawable; |
| this.data = data; |
| handle = new NSGraphicsContext(context); |
| handle.retain(); |
| handle.saveGraphicsState(); |
| data.path = NSBezierPath.bezierPath(); |
| data.path.setWindingRule(data.fillRule == SWT.FILL_WINDING ? OS.NSNonZeroWindingRule : OS.NSEvenOddWindingRule); |
| data.path.retain(); |
| } |
| |
| void initCGContext(long /*int*/ cgContext) { |
| int state = data.state; |
| if ((state & LINE_WIDTH) != 0) { |
| OS.CGContextSetLineWidth(cgContext, data.lineWidth == 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; |
| } |
| } |
| if ((state & LINE_STYLE) != 0) { |
| float[] dashes = null; |
| float width = data.lineWidth; |
| switch (data.lineStyle) { |
| case SWT.LINE_SOLID: break; |
| case SWT.LINE_DASH: dashes = width != 0 ? LINE_DASH : LINE_DASH_ZERO; break; |
| case SWT.LINE_DOT: dashes = width != 0 ? LINE_DOT : LINE_DOT_ZERO; break; |
| case SWT.LINE_DASHDOT: dashes = width != 0 ? LINE_DASHDOT : LINE_DASHDOT_ZERO; break; |
| case SWT.LINE_DASHDOTDOT: dashes = width != 0 ? LINE_DASHDOTDOT : LINE_DASHDOTDOT_ZERO; break; |
| case SWT.LINE_CUSTOM: dashes = data.lineDashes; break; |
| } |
| if (dashes != null) { |
| float[] lengths = new float[dashes.length]; |
| for (int i = 0; i < lengths.length; i++) { |
| lengths[i] = width == 0 || data.lineStyle == SWT.LINE_CUSTOM ? dashes[i] : dashes[i] * width; |
| } |
| OS.CGContextSetLineDash(cgContext, data.lineDashesOffset, lengths, lengths.length); |
| } else { |
| OS.CGContextSetLineDash(cgContext, 0, null, 0); |
| } |
| } |
| if ((state & LINE_MITERLIMIT) != 0) { |
| OS.CGContextSetMiterLimit(cgContext, data.lineMiterLimit); |
| } |
| if ((state & LINE_JOIN) != 0) { |
| int joinStyle = 0; |
| switch (data.lineJoin) { |
| case SWT.JOIN_MITER: joinStyle = OS.kCGLineJoinMiter; break; |
| case SWT.JOIN_ROUND: joinStyle = OS.kCGLineJoinRound; break; |
| case SWT.JOIN_BEVEL: joinStyle = OS.kCGLineJoinBevel; break; |
| } |
| OS.CGContextSetLineJoin(cgContext, joinStyle); |
| } |
| if ((state & LINE_CAP) != 0) { |
| int capStyle = 0; |
| switch (data.lineCap) { |
| case SWT.CAP_ROUND: capStyle = OS.kCGLineCapRound; break; |
| case SWT.CAP_FLAT: capStyle = OS.kCGLineCapButt; break; |
| case SWT.CAP_SQUARE: capStyle = OS.kCGLineCapSquare; break; |
| } |
| OS.CGContextSetLineCap(cgContext, capStyle); |
| } |
| } |
| |
| /** |
| * 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 boolean isClipped() { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.clipPath != 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 (except {@link #dispose()}) using the GC. |
| * |
| * @return <code>true</code> when the GC is disposed and <code>false</code> otherwise |
| */ |
| @Override |
| public boolean isDisposed() { |
| return handle == null; |
| } |
| |
| boolean isIdentity(float[] transform) { |
| return transform[0] == 1 && transform[1] == 0 && transform[2] == 0 |
| && transform[3] == 1 && transform[4] == 0 && transform[5] == 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(boolean advanced) { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (!advanced) { |
| setAlpha(0xFF); |
| setAntialias(SWT.DEFAULT); |
| setBackgroundPattern(null); |
| setClipping((Rectangle)null); |
| setForegroundPattern(null); |
| setInterpolation(SWT.DEFAULT); |
| setTextAntialias(SWT.DEFAULT); |
| setTransform(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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| data.alpha = alpha & 0xFF; |
| data.state &= ~(BACKGROUND | FOREGROUND | FOREGROUND_FILL); |
| |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| boolean mode = true; |
| switch (antialias) { |
| case SWT.DEFAULT: |
| /* Printer is off by default */ |
| if (!handle.isDrawingToScreen()) mode = false; |
| break; |
| case SWT.OFF: mode = false; break; |
| case SWT.ON: mode = true; break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| data.antialias = antialias; |
| handle.setShouldAntialias(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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| data.background = color.handle; |
| data.backgroundPattern = null; |
| if (data.bg != null) data.bg.release(); |
| data.bg = null; |
| data.state &= ~BACKGROUND; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (data.backgroundPattern == pattern) return; |
| data.backgroundPattern = pattern; |
| data.state &= ~BACKGROUND; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| NSRect rect = new NSRect(); |
| rect.x = x; |
| rect.y = y; |
| rect.width = width; |
| rect.height = height; |
| NSBezierPath path = NSBezierPath.bezierPathWithRect(rect); |
| path.retain(); |
| setClipping(path); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (path != null && path.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| setClipping(new NSBezierPath(path.handle.copy().id)); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (rect == null) { |
| setClipping((NSBezierPath)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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (region != null && region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| NSAutoreleasePool pool = null; |
| if (!NSThread.isMainThread()) pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); |
| try { |
| setClipping(region != null ? region.getPath() : null); |
| } finally { |
| if (pool != null) pool.release(); |
| } |
| } |
| |
| void setClipping(NSBezierPath path) { |
| if (data.clipPath != null) { |
| data.clipPath.release(); |
| data.clipPath = null; |
| } |
| if (path != null) { |
| data.clipPath = path; |
| if (data.transform != null) { |
| data.clipPath.transformUsingAffineTransform(data.transform); |
| } |
| } |
| data.state &= ~CLIPPING; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| switch (rule) { |
| case SWT.FILL_WINDING: |
| case SWT.FILL_EVEN_ODD: break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| data.fillRule = rule; |
| data.path.setWindingRule(rule == SWT.FILL_WINDING ? OS.NSNonZeroWindingRule : OS.NSEvenOddWindingRule); |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (font != null && font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| data.font = font != null ? font : data.device.systemFont; |
| data.state &= ~FONT; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| data.foreground = color.handle; |
| data.foregroundPattern = null; |
| if (data.fg != null) data.fg.release(); |
| data.fg = null; |
| data.state &= ~(FOREGROUND | FOREGROUND_FILL); |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (data.foregroundPattern == pattern) return; |
| data.foregroundPattern = pattern; |
| data.state &= ~(FOREGROUND | FOREGROUND_FILL); |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int quality = 0; |
| switch (interpolation) { |
| case SWT.DEFAULT: quality = OS.NSImageInterpolationDefault; break; |
| case SWT.NONE: quality = OS.NSImageInterpolationNone; break; |
| case SWT.LOW: quality = OS.NSImageInterpolationLow; break; |
| case SWT.HIGH: quality = OS.NSImageInterpolationHigh; break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| handle.setImageInterpolation(quality); |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (attributes == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| int mask = 0; |
| float lineWidth = attributes.width; |
| if (lineWidth != data.lineWidth) { |
| mask |= LINE_WIDTH | DRAW_OFFSET; |
| } |
| int lineStyle = attributes.style; |
| if (lineStyle != 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 == null) lineStyle = SWT.LINE_SOLID; |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| int join = attributes.join; |
| if (join != data.lineJoin) { |
| mask |= LINE_JOIN; |
| switch (join) { |
| case SWT.JOIN_MITER: |
| case SWT.JOIN_ROUND: |
| case SWT.JOIN_BEVEL: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| int cap = attributes.cap; |
| if (cap != data.lineCap) { |
| mask |= LINE_CAP; |
| switch (cap) { |
| case SWT.CAP_FLAT: |
| case SWT.CAP_ROUND: |
| case SWT.CAP_SQUARE: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| float[] dashes = attributes.dash; |
| float[] lineDashes = data.lineDashes; |
| if (dashes != null && dashes.length > 0) { |
| boolean changed = lineDashes == null || lineDashes.length != 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] != 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 != null && lineDashes.length > 0) { |
| mask |= LINE_STYLE; |
| } else { |
| dashes = lineDashes; |
| } |
| } |
| float dashOffset = attributes.dashOffset; |
| if (dashOffset != data.lineDashesOffset) { |
| mask |= LINE_STYLE; |
| } |
| float miterLimit = attributes.miterLimit; |
| if (miterLimit != data.lineMiterLimit) { |
| mask |= LINE_MITERLIMIT; |
| } |
| if (mask == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.lineCap == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| float[] lineDashes = data.lineDashes; |
| if (dashes != null && dashes.length > 0) { |
| boolean changed = data.lineStyle != SWT.LINE_CUSTOM || lineDashes == null || lineDashes.length != 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] != 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 == SWT.LINE_SOLID && (lineDashes == null || lineDashes.length == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.lineJoin == 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.lineStyle == 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 == 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 and |
| * specially at high DPI it's not recommended to mix |
| * line width zero with other line widths. |
| * </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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.lineWidth == lineWidth) return; |
| data.lineWidth = lineWidth; |
| data.state &= ~(LINE_WIDTH | DRAW_OFFSET); |
| } |
| |
| void setPatternPhase(Pattern pattern) { |
| if (pattern.image == null) return; |
| NSPoint phase = new NSPoint(); |
| if (data.image != null) { |
| phase.y += data.image.handle.size().height - pattern.image.handle.size().height; |
| } else if (data.view != null) { |
| NSView view = data.view; |
| if (!view.isFlipped()) { |
| phase.y = view.bounds().height; |
| } |
| NSView contentView = view.window().contentView(); |
| phase = view.convertPoint_toView_(phase, contentView); |
| phase.y = contentView.bounds().height - phase.y; |
| } else if (data.size != null) { |
| phase.y += data.size.height - pattern.image.handle.size().height; |
| } |
| handle.setPatternPhase(phase); |
| } |
| |
| /** |
| * 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 |
| */ |
| @Deprecated |
| public void setXORMode(boolean xor) { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| data.xorMode = xor; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| switch (antialias) { |
| case SWT.DEFAULT: |
| case SWT.OFF: |
| case SWT.ON: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| data.textAntialias = antialias; |
| } |
| |
| /** |
| * 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 == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (transform != null && transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (transform != null) { |
| if (data.transform != null) data.transform.release(); |
| if (data.inverseTransform != null) data.inverseTransform.release(); |
| data.transform = ((NSAffineTransform)new NSAffineTransform().alloc()).initWithTransform(transform.handle); |
| data.inverseTransform = ((NSAffineTransform)new NSAffineTransform().alloc()).initWithTransform(transform.handle); |
| NSAffineTransformStruct struct = data.inverseTransform.transformStruct(); |
| if ((struct.m11 * struct.m22 - struct.m12 * struct.m21) != 0) { |
| data.inverseTransform.invert(); |
| } |
| } else { |
| data.transform = data.inverseTransform = null; |
| } |
| data.state &= ~(TRANSFORM | DRAW_OFFSET); |
| } |
| |
| /** |
| * Returns the extent of the given string. No tab |
| * expansion or carriage return processing will be performed. |
| * <p> |
| * The <em>extent</em> of a string 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 string the string to measure |
| * @return a point containing the extent of the string |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Point stringExtent(String string) { |
| return textExtent(string, 0); |
| } |
| |
| /** |
| * Returns the extent of the given string. Tab expansion and |
| * carriage return processing are performed. |
| * <p> |
| * The <em>extent</em> of a string 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 string the string to measure |
| * @return a point containing the extent of the string |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Point textExtent(String string) { |
| return textExtent(string, SWT.DRAW_DELIMITER | SWT.DRAW_TAB); |
| } |
| |
| /** |
| * Returns the extent of the given string. 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 string 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 string the string to measure |
| * @param flags the flags specifying how to process the text |
| * @return a point containing the extent of the string |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Point textExtent(String string, int flags) { |
| if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| NSAutoreleasePool pool = checkGC(FONT); |
| try { |
| int length = string.length(); |
| if (data.textStorage == null) createLayout(); |
| NSAttributedString attribStr = createString(length == 0 ? " " : string, flags, false); //$NON-NLS-1$ |
| data.textStorage.setAttributedString(attribStr); |
| attribStr.release(); |
| data.layoutManager.glyphRangeForTextContainer(data.textContainer); |
| NSRect rect = data.layoutManager.usedRectForTextContainer(data.textContainer); |
| return new Point(length == 0 ? 0 : (int)Math.ceil(rect.width), (int)Math.ceil(rect.height)); |
| } finally { |
| uncheckGC(pool); |
| } |
| } |
| |
| /** |
| * Returns a string containing a concise, human-readable |
| * description of the receiver. |
| * |
| * @return a string representation of the receiver |
| */ |
| @Override |
| public String toString () { |
| if (isDisposed()) return "GC {*DISPOSED*}"; |
| return "GC {" + handle + "}"; |
| } |
| |
| void uncheckGC(NSAutoreleasePool pool) { |
| if (data.flippedContext != null && data.restoreContext) { |
| NSGraphicsContext.static_restoreGraphicsState(); |
| data.restoreContext = false; |
| } |
| NSView view = data.view; |
| if (view != null && data.paintRect == null) { |
| if (data.thread != Thread.currentThread()) flush(); |
| } |
| if (pool != null) pool.release(); |
| } |
| |
| } |