| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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.internal.*; |
| import org.eclipse.swt.internal.cairo.*; |
| import org.eclipse.swt.internal.motif.*; |
| import org.eclipse.swt.*; |
| |
| /** |
| * Class <code>GC</code> is where all of the drawing capabilities that are |
| * supported by SWT are located. Instances are used to draw on either an |
| * <code>Image</code>, a <code>Control</code>, or directly on a <code>Display</code>. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>LEFT_TO_RIGHT, RIGHT_TO_LEFT</dd> |
| * </dl> |
| * |
| * <p> |
| * The SWT drawing coordinate system is the two-dimensional space with the origin |
| * (0,0) at the top left corner of the drawing area and with (x,y) values increasing |
| * to the right and downward respectively. |
| * </p> |
| * |
| * <p> |
| * Application code must explicitly invoke the <code>GC.dispose()</code> |
| * method to release the operating system resources managed by each instance |
| * when those instances are no longer required. This is <em>particularly</em> |
| * important on Windows95 and Windows98 where the operating system has a limited |
| * number of device contexts available. |
| * </p> |
| * |
| * <p> |
| * Note: Only one of LEFT_TO_RIGHT and RIGHT_TO_LEFT may be specified. |
| * </p> |
| * |
| * @see org.eclipse.swt.events.PaintEvent |
| */ |
| 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> |
| */ |
| public int handle; |
| |
| Drawable drawable; |
| GCData data; |
| |
| static final int[] LINE_DOT = new int[]{1, 1}; |
| static final int[] LINE_DASH = new int[]{3, 1}; |
| static final int[] LINE_DASHDOT = new int[]{3, 1, 1, 1}; |
| static final int[] LINE_DASHDOTDOT = new int[]{3, 1, 1, 1, 1, 1}; |
| static final int[] LINE_DOT_ZERO = new int[]{3, 3}; |
| static final int[] LINE_DASH_ZERO = new int[]{18, 6}; |
| static final int[] LINE_DASHDOT_ZERO = new int[]{9, 6, 3, 6}; |
| static final int[] LINE_DASHDOTDOT_ZERO = new int[]{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 and background color 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> |
| * </ul> |
| */ |
| 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 and background color 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> |
| * </ul> |
| * |
| * @since 2.1.2 |
| */ |
| public GC(Drawable drawable, int style) { |
| if (drawable == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| GCData data = new GCData(); |
| data.style = checkStyle(style); |
| int xGC = 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, xGC); |
| if (device.tracking) device.new_Object(this); |
| } |
| 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); |
| } |
| /** |
| * 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 x, int y, int width, int height, int destX, int destY) { |
| copyArea(x, y, 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 x, int y, int width, int height, int destX, int destY, boolean paint) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width <= 0 || height <= 0) return; |
| int deltaX = destX - x, deltaY = destY - y; |
| if (deltaX == 0 && deltaY == 0) return; |
| int xDisplay = data.display; |
| int xDrawable = data.drawable; |
| if (data.backgroundImage != null && paint) { |
| OS.XClearArea (xDisplay, xDrawable, x, y, width, height, true); |
| OS.XClearArea (xDisplay, xDrawable, destX, destY, width, height, true); |
| return; |
| } |
| if (data.image == null && paint) OS.XSetGraphicsExposures (xDisplay, handle, true); |
| OS.XCopyArea(xDisplay, xDrawable, xDrawable, handle, x, y, width, height, destX, destY); |
| if (data.image == null && paint) { |
| OS.XSetGraphicsExposures (xDisplay, handle, false); |
| boolean disjoint = (destX + width < x) || (x + width < destX) || (destY + height < y) || (y + height < destY); |
| if (disjoint) { |
| OS.XClearArea (xDisplay, xDrawable, x, y, width, height, true); |
| } else { |
| if (deltaX != 0) { |
| int newX = destX - deltaX; |
| if (deltaX < 0) newX = destX + width; |
| OS.XClearArea (xDisplay, xDrawable, newX, y, Math.abs (deltaX), height, true); |
| } |
| if (deltaY != 0) { |
| int newY = destY - deltaY; |
| if (deltaY < 0) newY = destY + height; |
| OS.XClearArea (xDisplay, xDrawable, x, newY, width, Math.abs (deltaY), true); |
| } |
| } |
| } |
| } |
| /** |
| * 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 == 0) 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); |
| Rectangle rect = image.getBounds(); |
| int xDisplay = data.display; |
| int xGC = OS.XCreateGC(xDisplay, image.pixmap, 0, null); |
| if (xGC == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| OS.XSetSubwindowMode (xDisplay, xGC, OS.IncludeInferiors); |
| OS.XCopyArea(xDisplay, data.drawable, image.pixmap, xGC, x, y, rect.width, rect.height, 0, 0); |
| OS.XFreeGC(xDisplay, xGC); |
| } |
| /** |
| * Disposes of the operating system resources associated with |
| * the graphics context. Applications must dispose of all GCs |
| * which they allocate. |
| */ |
| public void dispose () { |
| if (handle == 0) return; |
| if (data.device.isDisposed()) return; |
| |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) Cairo.cairo_destroy(cairo); |
| data.cairo = 0; |
| |
| /* Free resources */ |
| int clipRgn = data.clipRgn; |
| if (clipRgn != 0) OS.XDestroyRegion(clipRgn); |
| Image image = data.image; |
| if (image != null) { |
| image.memGC = null; |
| if (image.transparentPixel != -1) image.createMask(); |
| } |
| |
| int renderTable = data.renderTable; |
| if (renderTable != 0) OS.XmRenderTableFree(renderTable); |
| int xmString = data.xmString; |
| if (xmString != 0) OS.XmStringFree (xmString); |
| int xmText = data.xmText; |
| if (xmText != 0) OS.XmStringFree (xmText); |
| int xmMnemonic = data.xmMnemonic; |
| if (xmMnemonic != 0) OS.XmStringFree (xmMnemonic); |
| |
| /* Dispose the GC */ |
| Device device = data.device; |
| if (drawable != null) drawable.internal_dispose_GC(handle, data); |
| |
| data.display = data.drawable = data.colormap = |
| data.clipRgn = data.renderTable = data.xmString = data.xmText = |
| data.xmMnemonic = 0; |
| data.font = null; |
| drawable = null; |
| handle = 0; |
| data.image = null; |
| if (device.tracking) device.dispose_Object(this); |
| data.device = null; |
| data = null; |
| } |
| /** |
| * Draws the outline of a circular or elliptical arc |
| * within the specified rectangular area. |
| * <p> |
| * The resulting arc begins at <code>startAngle</code> and extends |
| * for <code>arcAngle</code> degrees, using the current color. |
| * Angles are interpreted such that 0 degrees is at the 3 o'clock |
| * position. A positive value indicates a counter-clockwise rotation |
| * while a negative value indicates a clockwise rotation. |
| * </p><p> |
| * The center of the arc is the center of the rectangle whose origin |
| * is (<code>x</code>, <code>y</code>) and whose size is specified by the |
| * <code>width</code> and <code>height</code> arguments. |
| * </p><p> |
| * The resulting arc covers an area <code>width + 1</code> pixels wide |
| * by <code>height + 1</code> pixels tall. |
| * </p> |
| * |
| * @param x the x coordinate of the upper-left corner of the arc to be drawn |
| * @param y the y coordinate of the upper-left corner of the arc to be drawn |
| * @param width the width of the arc to be drawn |
| * @param height the height of the arc to be drawn |
| * @param startAngle the beginning angle |
| * @param arcAngle the angular extent of the arc, relative to the start angle |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle) { |
| if (handle == 0) 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; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| float offset = data.lineWidth == 0 || (data.lineWidth % 2) == 1 ? 0.5f : 0f; |
| if (width == height) { |
| if (arcAngle >= 0) { |
| Cairo.cairo_arc_negative(cairo, x + offset + width / 2f, y + offset + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } else { |
| Cairo.cairo_arc(cairo, x + offset + width / 2f, y + offset + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } |
| } else { |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, x + offset + width / 2f, y + offset + height / 2f); |
| Cairo.cairo_scale(cairo, width / 2f, height / 2f); |
| if (arcAngle >= 0) { |
| Cairo.cairo_arc_negative(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } else { |
| Cairo.cairo_arc(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| OS.XDrawArc(data.display, data.drawable, handle, x, y, width, height, startAngle * 64, arcAngle * 64); |
| } |
| /** |
| * Draws a rectangle, based on the specified arguments, which has |
| * the appearance of the platform's <em>focus rectangle</em> if the |
| * platform supports such a notion, and otherwise draws a simple |
| * rectangle in the receiver's foreground color. |
| * |
| * @param x the x coordinate of the rectangle |
| * @param y the y coordinate of the rectangle |
| * @param width the width of the rectangle |
| * @param height the height of the rectangle |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #drawRectangle(int, int, int, int) |
| */ |
| public void drawFocus (int x, int y, int width, int height) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| /* |
| * When the drawable is not a widget, the highlight |
| * color is zero. |
| */ |
| int xDisplay = data.display; |
| int xDrawable = data.drawable; |
| int highlightColor = 0; |
| int widget = OS.XtWindowToWidget (xDisplay, xDrawable); |
| if (widget != 0) { |
| int [] argList = {OS.XmNhighlightColor, 0}; |
| OS.XtGetValues (widget, argList, argList.length / 2); |
| highlightColor = argList [1]; |
| } |
| |
| /* Draw the focus rectangle */ |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| XGCValues values = new XGCValues (); |
| OS.XGetGCValues (xDisplay, handle, OS.GCForeground, values); |
| OS.XSetForeground (xDisplay, handle, highlightColor); |
| OS.XDrawRectangle (xDisplay, xDrawable, handle, x, y, width - 1, height - 1); |
| OS.XSetForeground (xDisplay, handle, values.foreground); |
| } |
| /** |
| * 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 == 0) 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 pixels to copy from the source |
| * @param srcHeight the height in pixels to copy from the source |
| * @param destX the x coordinate in the destination to copy to |
| * @param destY the y coordinate in the destination to copy to |
| * @param destWidth the width in pixels of the destination rectangle |
| * @param destHeight the height in pixels of the destination rectangle |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the image is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> |
| * <li>ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative. |
| * <li>ERROR_INVALID_ARGUMENT - if the source rectangle is not contained within the bounds of the source image</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li> |
| * </ul> |
| */ |
| public void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight) { |
| if (handle == 0) 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) { |
| int[] width = new int[1]; |
| int[] height = new int[1]; |
| int[] depth = new int[1]; |
| int[] unused = new int[1]; |
| OS.XGetGeometry(data.display, srcImage.pixmap, unused, unused, unused, width, height, unused, depth); |
| int imgWidth = width[0]; |
| int imgHeight = height[0]; |
| 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); |
| } |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (data.alpha != 0) { |
| srcImage.createSurface(); |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_rectangle(cairo, destX + 0.5, destY + 0.5, destWidth, destHeight); |
| Cairo.cairo_clip(cairo); |
| Cairo.cairo_translate(cairo, destX - srcX + 0.5, destY - srcY + 0.5); |
| if (srcWidth != destWidth || srcHeight != destHeight) { |
| Cairo.cairo_scale(cairo, destWidth / (float)srcWidth, destHeight / (float)srcHeight); |
| } |
| int filter = Cairo.CAIRO_FILTER_GOOD; |
| switch (data.interpolation) { |
| case SWT.DEFAULT: filter = Cairo.CAIRO_FILTER_GOOD; break; |
| case SWT.NONE: filter = Cairo.CAIRO_FILTER_NEAREST; break; |
| case SWT.LOW: filter = Cairo.CAIRO_FILTER_FAST; break; |
| case SWT.HIGH: filter = Cairo.CAIRO_FILTER_BEST; break; |
| } |
| int /*long*/ pattern = Cairo.cairo_pattern_create_for_surface(srcImage.surface); |
| if (pattern == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_pattern_set_filter(pattern, filter); |
| Cairo.cairo_pattern_set_extend(pattern, Cairo.CAIRO_EXTEND_REFLECT); |
| Cairo.cairo_set_source(cairo, pattern); |
| if (data.alpha != 0xFF) { |
| Cairo.cairo_paint_with_alpha(cairo, data.alpha / (float)0xFF); |
| } else { |
| Cairo.cairo_paint(cairo); |
| } |
| Cairo.cairo_restore(cairo); |
| Cairo.cairo_pattern_destroy(pattern); |
| } |
| return; |
| } |
| if (srcImage.alpha != -1 || srcImage.alphaData != null) { |
| drawImageAlpha(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, depth[0]); |
| } else if (srcImage.transparentPixel != -1 || srcImage.mask != 0) { |
| drawImageMask(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, depth[0]); |
| } else { |
| drawImage(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, depth[0]); |
| } |
| } |
| void drawImageAlpha(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, int depth) { |
| /* Simple cases */ |
| if (srcImage.alpha == 0) return; |
| if (srcImage.alpha == 255) { |
| drawImage(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, depth); |
| return; |
| } |
| if (device.useXRender) { |
| drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, srcImage.mask, OS.PictStandardA8); |
| return; |
| } |
| |
| /* Check the clipping */ |
| Rectangle rect = getClipping(); |
| rect = rect.intersection(new Rectangle(destX, destY, destWidth, destHeight)); |
| if (rect.isEmpty()) return; |
| |
| /* Optimization. Recalculate the src and dest rectangles so that |
| * only the clipping area is drawn. |
| */ |
| int sx1 = srcX + (((rect.x - destX) * srcWidth) / destWidth); |
| int sx2 = srcX + ((((rect.x + rect.width) - destX) * srcWidth) / destWidth); |
| int sy1 = srcY + (((rect.y - destY) * srcHeight) / destHeight); |
| int sy2 = srcY + ((((rect.y + rect.height) - destY) * srcHeight) / destHeight); |
| destX = rect.x; |
| destY = rect.y; |
| destWidth = rect.width; |
| destHeight = rect.height; |
| srcX = sx1; |
| srcY = sy1; |
| srcWidth = Math.max(1, sx2 - sx1); |
| srcHeight = Math.max(1, sy2 - sy1); |
| |
| int xDisplay = data.display; |
| int xDrawable = data.drawable; |
| int xDestImagePtr = 0, xSrcImagePtr = 0; |
| try { |
| /* Get the background pixels */ |
| xDestImagePtr = OS.XGetImage(xDisplay, xDrawable, destX, destY, destWidth, destHeight, OS.AllPlanes, OS.ZPixmap); |
| if (xDestImagePtr == 0) return; |
| XImage xDestImage = new XImage(); |
| OS.memmove(xDestImage, xDestImagePtr, XImage.sizeof); |
| byte[] destData = new byte[xDestImage.bytes_per_line * xDestImage.height]; |
| OS.memmove(destData, xDestImage.data, destData.length); |
| |
| /* Get the foreground pixels */ |
| xSrcImagePtr = OS.XGetImage(xDisplay, srcImage.pixmap, srcX, srcY, srcWidth, srcHeight, OS.AllPlanes, OS.ZPixmap); |
| if (xSrcImagePtr == 0) return; |
| XImage xSrcImage = new XImage(); |
| OS.memmove(xSrcImage, xSrcImagePtr, XImage.sizeof); |
| byte[] srcData = new byte[xSrcImage.bytes_per_line * xSrcImage.height]; |
| OS.memmove(srcData, xSrcImage.data, srcData.length); |
| |
| /* Compose the pixels */ |
| if (xSrcImage.depth <= 8) { |
| XColor[] xcolors = data.device.xcolors; |
| if (xcolors == null) SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); |
| byte[] reds = new byte[xcolors.length]; |
| byte[] greens = new byte[xcolors.length]; |
| byte[] blues = new byte[xcolors.length]; |
| for (int i = 0; i < xcolors.length; i++) { |
| XColor color = xcolors[i]; |
| if (color == null) continue; |
| reds[i] = (byte)((color.red >> 8) & 0xFF); |
| greens[i] = (byte)((color.green >> 8) & 0xFF); |
| blues[i] = (byte)((color.blue >> 8) & 0xFF); |
| } |
| ImageData.blit(ImageData.BLIT_ALPHA, |
| srcData, xSrcImage.bits_per_pixel, xSrcImage.bytes_per_line, xSrcImage.byte_order, 0, 0, srcWidth, srcHeight, reds, greens, blues, |
| srcImage.alpha, srcImage.alphaData, imgWidth, srcX, srcY, |
| destData, xDestImage.bits_per_pixel, xDestImage.bytes_per_line, xDestImage.byte_order, 0, 0, destWidth, destHeight, reds, greens, blues, |
| false, false); |
| } else { |
| int srcRedMask = xSrcImage.red_mask; |
| int srcGreenMask = xSrcImage.green_mask; |
| int srcBlueMask = xSrcImage.blue_mask; |
| int destRedMask = xDestImage.red_mask; |
| int destGreenMask = xDestImage.green_mask; |
| int destBlueMask = xDestImage.blue_mask; |
| |
| /* |
| * Feature in X. XGetImage does not retrieve the RGB masks if the drawable |
| * is a Pixmap. The fix is to detect that the masks are not valid and use |
| * the default visual masks instead. |
| * |
| * NOTE: It is safe to use the default Visual masks, since we always |
| * create images with these masks. |
| */ |
| int visual = OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay)); |
| Visual xVisual = new Visual(); |
| OS.memmove(xVisual, visual, Visual.sizeof); |
| if (srcRedMask == 0 && srcGreenMask == 0 && srcBlueMask == 0) { |
| srcRedMask = xVisual.red_mask; |
| srcGreenMask = xVisual.green_mask; |
| srcBlueMask = xVisual.blue_mask; |
| } |
| if (destRedMask == 0 && destGreenMask == 0 && destBlueMask == 0) { |
| destRedMask = xVisual.red_mask; |
| destGreenMask = xVisual.green_mask; |
| destBlueMask = xVisual.blue_mask; |
| } |
| |
| ImageData.blit(ImageData.BLIT_ALPHA, |
| srcData, xSrcImage.bits_per_pixel, xSrcImage.bytes_per_line, xSrcImage.byte_order, 0, 0, srcWidth, srcHeight, srcRedMask, srcGreenMask, srcBlueMask, |
| srcImage.alpha, srcImage.alphaData, imgWidth, srcX, srcY, |
| destData, xDestImage.bits_per_pixel, xDestImage.bytes_per_line, xDestImage.byte_order, 0, 0, destWidth, destHeight, destRedMask, destGreenMask, destBlueMask, |
| false, false); |
| } |
| |
| /* Draw the composed pixels */ |
| OS.memmove(xDestImage.data, destData, destData.length); |
| OS.XPutImage(xDisplay, xDrawable, handle, xDestImagePtr, 0, 0, destX, destY, destWidth, destHeight); |
| } finally { |
| if (xSrcImagePtr != 0) OS.XDestroyImage(xSrcImagePtr); |
| if (xDestImagePtr != 0) OS.XDestroyImage(xDestImagePtr); |
| } |
| } |
| void drawImageMask(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, int depth) { |
| int xDisplay = data.display; |
| int xDrawable = data.drawable; |
| /* Generate the mask if necessary. */ |
| if (srcImage.transparentPixel != -1) srcImage.createMask(); |
| |
| if (device.useXRender) { |
| drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, srcImage.mask, OS.PictStandardA1); |
| } else { |
| int colorPixmap = 0, maskPixmap = 0; |
| int foreground = 0x00000000; |
| if (simple || (srcWidth == destWidth && srcHeight == destHeight)) { |
| colorPixmap = srcImage.pixmap; |
| maskPixmap = srcImage.mask; |
| } else { |
| /* Stretch the color and mask*/ |
| int xImagePtr = scalePixmap(xDisplay, srcImage.pixmap, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false, false); |
| if (xImagePtr != 0) { |
| int xMaskPtr = scalePixmap(xDisplay, srcImage.mask, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false, false); |
| if (xMaskPtr != 0) { |
| /* Create color scaled pixmaps */ |
| colorPixmap = OS.XCreatePixmap(xDisplay, xDrawable, destWidth, destHeight, depth); |
| int tempGC = OS.XCreateGC(xDisplay, colorPixmap, 0, null); |
| OS.XPutImage(xDisplay, colorPixmap, tempGC, xImagePtr, 0, 0, 0, 0, destWidth, destHeight); |
| OS.XFreeGC(xDisplay, tempGC); |
| |
| /* Create mask scaled pixmaps */ |
| maskPixmap = OS.XCreatePixmap(xDisplay, xDrawable, destWidth, destHeight, 1); |
| tempGC = OS.XCreateGC(xDisplay, maskPixmap, 0, null); |
| OS.XPutImage(xDisplay, maskPixmap, tempGC, xMaskPtr, 0, 0, 0, 0, destWidth, destHeight); |
| OS.XFreeGC(xDisplay, tempGC); |
| |
| OS.XDestroyImage(xMaskPtr); |
| } |
| OS.XDestroyImage(xImagePtr); |
| } |
| |
| /* Change the source rectangle */ |
| srcX = srcY = 0; |
| srcWidth = destWidth; |
| srcHeight = destHeight; |
| |
| foreground = ~foreground; |
| } |
| |
| /* Do the blts */ |
| if (colorPixmap != 0 && maskPixmap != 0) { |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(xDisplay, handle, OS.GCForeground | OS. GCBackground | OS.GCFunction, values); |
| OS.XSetFunction(xDisplay, handle, OS.GXxor); |
| OS.XCopyArea(xDisplay, colorPixmap, xDrawable, handle, srcX, srcY, srcWidth, srcHeight, destX, destY); |
| OS.XSetForeground(xDisplay, handle, foreground); |
| OS.XSetBackground(xDisplay, handle, ~foreground); |
| OS.XSetFunction(xDisplay, handle, OS.GXand); |
| OS.XCopyPlane(xDisplay, maskPixmap, xDrawable, handle, srcX, srcY, srcWidth, srcHeight, destX, destY, 1); |
| OS.XSetFunction(xDisplay, handle, OS.GXxor); |
| OS.XCopyArea(xDisplay, colorPixmap, xDrawable, handle, srcX, srcY, srcWidth, srcHeight, destX, destY); |
| OS.XSetForeground(xDisplay, handle, values.foreground); |
| OS.XSetBackground(xDisplay, handle, values.background); |
| OS.XSetFunction(xDisplay, handle, values.function); |
| } |
| |
| /* Destroy scaled pixmaps */ |
| if (colorPixmap != 0 && srcImage.pixmap != colorPixmap) OS.XFreePixmap(xDisplay, colorPixmap); |
| if (maskPixmap != 0 && srcImage.mask != maskPixmap) OS.XFreePixmap(xDisplay, maskPixmap); |
| } |
| |
| /* Destroy the image mask if the there is a GC created on the image */ |
| if (srcImage.transparentPixel != -1 && srcImage.memGC != null) srcImage.destroyMask(); |
| } |
| void drawImageXRender(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, int maskPixmap, int maskType) { |
| int drawable = data.drawable; |
| int xDisplay = data.display; |
| int maskPict = 0; |
| if (maskPixmap != 0) { |
| int attribCount = 0; |
| XRenderPictureAttributes attrib = null; |
| if (srcImage.alpha != -1) { |
| attribCount = 1; |
| attrib = new XRenderPictureAttributes(); |
| attrib.repeat = true; |
| } |
| maskPict = OS.XRenderCreatePicture(xDisplay, maskPixmap, OS.XRenderFindStandardFormat(xDisplay, maskType), attribCount, attrib); |
| if (maskPict == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| } |
| int format = OS.XRenderFindVisualFormat(xDisplay, OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay))); |
| int destPict = OS.XRenderCreatePicture(xDisplay, drawable, format, 0, null); |
| if (destPict == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| int srcPict = OS.XRenderCreatePicture(xDisplay, srcImage.pixmap, format, 0, null); |
| if (srcPict == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| if (srcWidth != destWidth || srcHeight != destHeight) { |
| int[] transform = new int[]{(int)(((float)srcWidth / destWidth) * 65536), 0, 0, 0, (int)(((float)srcHeight / destHeight) * 65536), 0, 0, 0, 65536}; |
| OS.XRenderSetPictureTransform(xDisplay, srcPict, transform); |
| if (maskPict != 0) OS.XRenderSetPictureTransform(xDisplay, maskPict, transform); |
| } |
| int clipping = data.clipRgn; |
| if (data.damageRgn != 0) { |
| if (clipping == 0) { |
| clipping = data.damageRgn; |
| } else { |
| clipping = OS.XCreateRegion (); |
| OS.XUnionRegion(clipping, data.clipRgn, clipping); |
| OS.XIntersectRegion(clipping, data.damageRgn, clipping); |
| } |
| } |
| if (clipping != 0) { |
| OS.XRenderSetPictureClipRegion(xDisplay, destPict, clipping); |
| if (clipping != data.clipRgn && clipping != data.damageRgn) { |
| OS.XDestroyRegion(clipping); |
| } |
| } |
| OS.XRenderComposite(xDisplay, maskPict != 0 ? OS.PictOpOver : OS.PictOpSrc, srcPict, maskPict, destPict, srcX, srcY, srcX, srcY, destX, destY, destWidth, destHeight); |
| OS.XRenderFreePicture(xDisplay, destPict); |
| OS.XRenderFreePicture(xDisplay, srcPict); |
| if (maskPict != 0) OS.XRenderFreePicture(xDisplay, maskPict); |
| } |
| void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, int depth) { |
| int xDisplay = data.display; |
| int xDrawable = data.drawable; |
| /* Simple case: no stretching */ |
| if ((srcWidth == destWidth) && (srcHeight == destHeight)) { |
| OS.XCopyArea(xDisplay, srcImage.pixmap, xDrawable, handle, srcX, srcY, srcWidth, srcHeight, destX, destY); |
| return; |
| } |
| if (device.useXRender) { |
| drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, 0, -1); |
| return; |
| } |
| |
| /* Streching case */ |
| int xImagePtr = scalePixmap(xDisplay, srcImage.pixmap, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false, false); |
| if (xImagePtr != 0) { |
| OS.XPutImage(xDisplay, xDrawable, handle, xImagePtr, 0, 0, destX, destY, destWidth, destHeight); |
| OS.XDestroyImage(xImagePtr); |
| } |
| } |
| static int scalePixmap(int display, int pixmap, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean flipX, boolean flipY) { |
| int xSrcImagePtr = OS.XGetImage(display, pixmap, srcX, srcY, srcWidth, srcHeight, OS.AllPlanes, OS.ZPixmap); |
| if (xSrcImagePtr == 0) return 0; |
| XImage xSrcImage = new XImage(); |
| OS.memmove(xSrcImage, xSrcImagePtr, XImage.sizeof); |
| byte[] srcData = new byte[xSrcImage.bytes_per_line * xSrcImage.height]; |
| OS.memmove(srcData, xSrcImage.data, srcData.length); |
| OS.XDestroyImage(xSrcImagePtr); |
| int xImagePtr = 0; |
| int visual = OS.XDefaultVisual(display, OS.XDefaultScreen(display)); |
| switch (xSrcImage.bits_per_pixel) { |
| case 1: |
| case 4: |
| case 8: { |
| int format = xSrcImage.bits_per_pixel == 1 ? OS.XYBitmap : OS.ZPixmap; |
| xImagePtr = OS.XCreateImage(display, visual, xSrcImage.depth, format, 0, 0, destWidth, destHeight, xSrcImage.bitmap_pad, 0); |
| if (xImagePtr == 0) return 0; |
| XImage xImage = new XImage(); |
| OS.memmove(xImage, xImagePtr, XImage.sizeof); |
| int bufSize = xImage.bytes_per_line * xImage.height; |
| if (bufSize < 0) { |
| OS.XDestroyImage(xImagePtr); |
| return 0; |
| } |
| int bufPtr = OS.XtMalloc(bufSize); |
| xImage.data = bufPtr; |
| OS.memmove(xImagePtr, xImage, XImage.sizeof); |
| byte[] buf = new byte[bufSize]; |
| int srcOrder = xSrcImage.bits_per_pixel == 1 ? xSrcImage.bitmap_bit_order : xSrcImage.byte_order; |
| int destOrder = xImage.bits_per_pixel == 1 ? xImage.bitmap_bit_order : xImage.byte_order; |
| ImageData.blit(ImageData.BLIT_SRC, |
| srcData, xSrcImage.bits_per_pixel, xSrcImage.bytes_per_line, srcOrder, 0, 0, srcWidth, srcHeight, null, null, null, |
| ImageData.ALPHA_OPAQUE, null, 0, 0, 0, |
| buf, xImage.bits_per_pixel, xImage.bytes_per_line, destOrder, 0, 0, destWidth, destHeight, null, null, null, |
| flipX, flipY); |
| OS.memmove(bufPtr, buf, bufSize); |
| break; |
| } |
| case 16: |
| case 24: |
| case 32: { |
| xImagePtr = OS.XCreateImage(display, visual, xSrcImage.depth, OS.ZPixmap, 0, 0, destWidth, destHeight, xSrcImage.bitmap_pad, 0); |
| if (xImagePtr == 0) return 0; |
| XImage xImage = new XImage(); |
| OS.memmove(xImage, xImagePtr, XImage.sizeof); |
| int bufSize = xImage.bytes_per_line * xImage.height; |
| if (bufSize < 0) { |
| OS.XDestroyImage(xImagePtr); |
| return 0; |
| } |
| int bufPtr = OS.XtMalloc(bufSize); |
| xImage.data = bufPtr; |
| OS.memmove(xImagePtr, xImage, XImage.sizeof); |
| byte[] buf = new byte[bufSize]; |
| ImageData.blit(ImageData.BLIT_SRC, |
| srcData, xSrcImage.bits_per_pixel, xSrcImage.bytes_per_line, xSrcImage.byte_order, 0, 0, srcWidth, srcHeight, 0, 0, 0, |
| ImageData.ALPHA_OPAQUE, null, 0, 0, 0, |
| buf, xImage.bits_per_pixel, xImage.bytes_per_line, xImage.byte_order, 0, 0, destWidth, destHeight, 0, 0, 0, |
| flipX, flipY); |
| OS.memmove(bufPtr, buf, bufSize); |
| break; |
| } |
| } |
| return xImagePtr; |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| float offset = data.lineWidth == 0 || (data.lineWidth % 2) == 1 ? 0.5f : 0f; |
| Cairo.cairo_move_to(cairo, x1 + offset, y1 + offset); |
| Cairo.cairo_line_to(cairo, x2 + offset, y2 + offset); |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| OS.XDrawLine (data.display, data.drawable, handle, x1, y1, x2, y2); |
| } |
| /** |
| * Draws the outline of an oval, using the foreground color, |
| * within the specified rectangular area. |
| * <p> |
| * The result is a circle or ellipse that fits within the |
| * rectangle specified by the <code>x</code>, <code>y</code>, |
| * <code>width</code>, and <code>height</code> arguments. |
| * </p><p> |
| * The oval covers an area that is <code>width + 1</code> |
| * pixels wide and <code>height + 1</code> pixels tall. |
| * </p> |
| * |
| * @param x the x coordinate of the upper left corner of the oval to be drawn |
| * @param y the y coordinate of the upper left corner of the oval to be drawn |
| * @param width the width of the oval to be drawn |
| * @param height the height of the oval to be drawn |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawOval(int x, int y, int width, int height) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| float offset = data.lineWidth == 0 || (data.lineWidth % 2) == 1 ? 0.5f : 0f; |
| if (width == height) { |
| Cairo.cairo_arc_negative(cairo, x + offset + width / 2f, y + offset + height / 2f, width / 2f, 0, -2 * (float)Compatibility.PI); |
| } else { |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, x + offset + width / 2f, y + offset + height / 2f); |
| Cairo.cairo_scale(cairo, width / 2f, height / 2f); |
| Cairo.cairo_arc_negative(cairo, 0, 0, 1, 0, -2 * (float)Compatibility.PI); |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| OS.XDrawArc(data.display, data.drawable, handle, x, y, width, height, 0, 23040); |
| } |
| /** |
| * Draws the path described by the parameter. |
| * |
| * @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> |
| * </ul> |
| * |
| * @see Path |
| * |
| * @since 3.1 |
| */ |
| public void drawPath(Path path) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (path.handle == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| initCairo(); |
| int /*long*/ cairo = data.cairo; |
| Cairo.cairo_save(cairo); |
| float offset = data.lineWidth == 0 || (data.lineWidth % 2) == 1 ? 0.5f : 0f; |
| Cairo.cairo_translate(cairo, offset, offset); |
| int /*long*/ copy = Cairo.cairo_copy_path(path.handle); |
| if (copy == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_append_path(cairo, copy); |
| Cairo.cairo_path_destroy(copy); |
| Cairo.cairo_stroke(cairo); |
| Cairo.cairo_restore(cairo); |
| } |
| /** |
| * Draws a pixel, using the foreground color, at the specified |
| * point (<code>x</code>, <code>y</code>). |
| * <p> |
| * Note that the receiver's line attributes do not affect this |
| * operation. |
| * </p> |
| * |
| * @param x the point's x coordinate |
| * @param y the point's y coordinate |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.0 |
| */ |
| public void drawPoint (int x, int y) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_rectangle(cairo, x, y, 1, 1); |
| Cairo.cairo_fill(cairo); |
| return; |
| } |
| OS.XDrawPoint(data.display, data.drawable, handle, x, y); |
| } |
| /** |
| * Draws the closed polygon which is defined by the specified array |
| * of integer coordinates, using the receiver's foreground color. The array |
| * contains alternating x and y values which are considered to represent |
| * points which are the vertices of the polygon. Lines are drawn between |
| * each consecutive pair, and between the first pair and last pair in the |
| * array. |
| * |
| * @param pointArray an array of alternating x and y values which are the vertices of the polygon |
| * |
| * @exception 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| drawPolyline(cairo, pointArray, true); |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| |
| // Motif does not have a native drawPolygon() call. Instead we ensure |
| // that the first and last points are the same and call drawPolyline(). |
| |
| int length = pointArray.length; |
| |
| // Need at least 3 points to define the polygon. If 2 or fewer points |
| // passed in, it is either a line or point so just call drawPolyline(). |
| // Check what happens when XOR is implemented. We may not be able to |
| // do this optimization. |
| |
| if (length < 4) { |
| drawPolyline(pointArray); |
| return; |
| } |
| |
| // If first and last points are the same, the polygon is already closed. |
| // Just call drawPolyline(). |
| // |
| // Check what happens when XOR is implemented. We may not be able to |
| // do this optimization. |
| |
| if (pointArray[0] == pointArray[length - 2] && (pointArray[1] == pointArray[length - 1])) { |
| drawPolyline(pointArray); |
| return; |
| } |
| |
| // Grow the list of points by one element and make sure the first and last |
| // points are the same. This will close the polygon and we can use the |
| // drawPolyline() call. |
| |
| int newPoints[] = new int[length + 2]; |
| for (int i = 0; i < length ; i++) |
| newPoints[i] = pointArray[i]; |
| newPoints[length] = pointArray[0]; |
| newPoints[length + 1] = pointArray[1]; |
| |
| drawPolyline(newPoints); |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| drawPolyline(cairo, pointArray, false); |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| short[] xPoints = new short[pointArray.length]; |
| for (int i = 0; i<pointArray.length;i++) { |
| xPoints[i] = (short) pointArray[i]; |
| } |
| OS.XDrawLines(data.display,data.drawable,handle,xPoints,xPoints.length / 2, OS.CoordModeOrigin); |
| } |
| void drawPolyline(int /*long*/ cairo, int[] pointArray, boolean close) { |
| int count = pointArray.length / 2; |
| if (count == 0) return; |
| float offset = data.lineWidth == 0 || (data.lineWidth % 2) == 1 ? 0.5f : 0f; |
| Cairo.cairo_move_to(cairo, pointArray[0] + offset, pointArray[1] + offset); |
| for (int i = 1, j=2; i < count; i++, j += 2) { |
| Cairo.cairo_line_to(cairo, pointArray[j] + offset, pointArray[j + 1] + offset); |
| } |
| if (close) Cairo.cairo_close_path(cairo); |
| } |
| /** |
| * Draws the outline of the rectangle specified by the arguments, |
| * using the receiver's foreground color. The left and right edges |
| * of the rectangle are at <code>x</code> and <code>x + width</code>. |
| * The top and bottom edges are at <code>y</code> and <code>y + height</code>. |
| * |
| * @param x the x coordinate of the rectangle to be drawn |
| * @param y the y coordinate of the rectangle to be drawn |
| * @param width the width of the rectangle to be drawn |
| * @param height the height of the rectangle to be drawn |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawRectangle (int x, int y, int width, int height) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| float offset = data.lineWidth == 0 || (data.lineWidth % 2) == 1 ? 0.5f : 0f; |
| Cairo.cairo_rectangle(cairo, x + offset, y + offset, width, height); |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| OS.XDrawRectangle (data.display, data.drawable, handle, x, y, width, height); |
| } |
| /** |
| * Draws the outline of the specified rectangle, using the receiver's |
| * foreground color. The left and right edges of the rectangle are at |
| * <code>rect.x</code> and <code>rect.x + rect.width</code>. The top |
| * and bottom edges are at <code>rect.y</code> and |
| * <code>rect.y + rect.height</code>. |
| * |
| * @param rect the rectangle to draw |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawRectangle (Rectangle rect) { |
| if (rect == 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int nx = x; |
| int ny = y; |
| int nw = width; |
| int nh = height; |
| int naw = arcWidth; |
| int nah = arcHeight; |
| if (nw < 0) { |
| nw = 0 - nw; |
| nx = nx - nw; |
| } |
| if (nh < 0) { |
| nh = 0 - nh; |
| ny = ny - nh; |
| } |
| if (naw < 0) naw = 0 - naw; |
| if (nah < 0) nah = 0 - nah; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| float naw2 = naw / 2f; |
| float nah2 = nah / 2f; |
| float fw = nw / naw2; |
| float fh = nh / nah2; |
| Cairo.cairo_save(cairo); |
| float offset = data.lineWidth == 0 || (data.lineWidth % 2) == 1 ? 0.5f : 0f; |
| Cairo.cairo_translate(cairo, nx + offset, ny + offset); |
| Cairo.cairo_scale(cairo, naw2, nah2); |
| Cairo.cairo_move_to(cairo, fw - 1, 0); |
| Cairo.cairo_arc(cairo, fw - 1, 1, 1, Compatibility.PI + Compatibility.PI/2.0, Compatibility.PI*2.0); |
| Cairo.cairo_arc(cairo, fw - 1, fh - 1, 1, 0, Compatibility.PI/2.0); |
| Cairo.cairo_arc(cairo, 1, fh - 1, 1, Compatibility.PI/2, Compatibility.PI); |
| Cairo.cairo_arc(cairo, 1, 1, 1, Compatibility.PI, 270.0*Compatibility.PI/180.0); |
| Cairo.cairo_close_path(cairo); |
| Cairo.cairo_restore(cairo); |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| int naw2 = naw / 2; |
| int nah2 = nah / 2; |
| int xDisplay = data.display; |
| int xDrawable = data.drawable; |
| if (nw > naw) { |
| if (nh > nah) { |
| OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny, naw, nah, 5760, 5760); |
| OS.XDrawLine(xDisplay, xDrawable, handle, nx + naw2, ny, nx + nw - naw2, ny); |
| OS.XDrawArc(xDisplay, xDrawable, handle, nx + nw - naw, ny, naw, nah, 0, 5760); |
| OS.XDrawLine(xDisplay, xDrawable, handle, nx + nw, ny + nah2, nx + nw, ny + nh - nah2); |
| OS.XDrawArc(xDisplay, xDrawable, handle, nx + nw - naw, ny + nh - nah, naw, nah, 17280, 5760); |
| OS.XDrawLine(xDisplay,xDrawable,handle, nx + naw2, ny + nh, nx + nw - naw2, ny + nh); |
| OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny + nh - nah, naw, nah, 11520, 5760); |
| OS.XDrawLine(xDisplay, xDrawable, handle, nx, ny + nah2, nx, ny + nh - nah2); |
| } else { |
| OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny, naw, nh, 5760, 11520); |
| OS.XDrawLine(xDisplay, xDrawable, handle, nx + naw2, ny, nx + nw - naw2, ny); |
| OS.XDrawArc(xDisplay, xDrawable, handle, nx + nw - naw, ny, naw, nh, 17280, 11520); |
| OS.XDrawLine(xDisplay,xDrawable,handle, nx + naw2, ny + nh, nx + nw - naw2, ny + nh); |
| } |
| } else { |
| if (nh > nah) { |
| OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny, nw, nah, 0, 11520); |
| OS.XDrawLine(xDisplay, xDrawable, handle, nx + nw, ny + nah2, nx + nw, ny + nh - nah2); |
| OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny + nh - nah, nw, nah, 11520, 11520); |
| OS.XDrawLine(xDisplay,xDrawable,handle, nx, ny + nah2, nx, ny + nh - nah2); |
| } else { |
| OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny, nw, nh, 0, 23040); |
| } |
| } |
| } |
| /** |
| * 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) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (string.length() == 0) return; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| //TODO - honor isTransparent |
| cairo_font_extents_t extents = new cairo_font_extents_t(); |
| Cairo.cairo_font_extents(cairo, extents); |
| double baseline = y + extents.ascent; |
| Cairo.cairo_move_to(cairo, x, baseline); |
| byte[] buffer = Converter.wcsToMbcs(null, string, true); |
| Cairo.cairo_text_path(cairo, buffer); |
| Cairo.cairo_fill(cairo); |
| return; |
| } |
| setString(string); |
| if (isTransparent) { |
| OS.XmStringDraw (data.display, data.drawable, data.font.handle, data.xmString, handle, x, y, 0x7FFFFFFF, OS.XmALIGNMENT_BEGINNING, 0, null); |
| } else { |
| OS.XmStringDrawImage (data.display, data.drawable, data.font.handle, data.xmString, handle, x, y, 0x7FFFFFFF, OS.XmALIGNMENT_BEGINNING, 0, null); |
| } |
| } |
| void createRenderTable() { |
| int fontList = data.font.handle; |
| /* Get the width of the tabs */ |
| byte[] buffer = {(byte)' ', 0}; |
| int xmString = OS.XmStringCreate(buffer, OS.XmFONTLIST_DEFAULT_TAG); |
| int tabWidth = OS.XmStringWidth(fontList, xmString) * 8; |
| OS.XmStringFree(xmString); |
| |
| /* Create the tab list */ |
| int [] tabs = new int[16]; |
| int tab = OS.XmTabCreate(tabWidth, (byte) OS.XmPIXELS, (byte) OS.XmRELATIVE, (byte) OS.XmALIGNMENT_BEGINNING, null); |
| for (int i = 0; i < tabs.length; i++) tabs[i] = tab; |
| int tabList = OS.XmTabListInsertTabs(0, tabs, tabs.length, 0); |
| |
| /* Create a font context to iterate over the elements in the font list */ |
| int[] fontBuffer = new int[1]; |
| if (!OS.XmFontListInitFontContext(fontBuffer, fontList)) { |
| SWT.error(SWT.ERROR_NO_HANDLES); |
| } |
| int context = fontBuffer[0], fontListEntry = 0; |
| int[] renditions = new int[4]; int renditionCount = 0; |
| |
| /* Create a rendition for each entry in the font list */ |
| while ((fontListEntry = OS.XmFontListNextEntry(context)) != 0) { |
| int fontPtr = OS.XmFontListEntryGetFont(fontListEntry, fontBuffer); |
| int fontType = (fontBuffer [0] == 0) ? OS.XmFONT_IS_FONT : OS.XmFONT_IS_FONTSET; |
| if (fontPtr == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| int [] argList = { |
| OS.XmNtabList, tabList, |
| OS.XmNfont, fontPtr, |
| OS.XmNfontType, fontType, |
| }; |
| int rendition = OS.XmRenditionCreate(data.device.shellHandle, OS.XmFONTLIST_DEFAULT_TAG, argList, argList.length / 2); |
| renditions[renditionCount++] = rendition; |
| if (renditionCount == renditions.length) { |
| int[] newArray = new int[renditions.length + 4]; |
| System.arraycopy(newArray, 0, renditions, 0, renditionCount); |
| renditions = newArray; |
| } |
| } |
| OS.XmFontListFreeFontContext(context); |
| OS.XmTabFree(tab); |
| OS.XmTabListFree(tabList); |
| |
| /* Create the render table from the renditions */ |
| data.renderTable = OS.XmRenderTableAddRenditions(0, renditions, renditionCount, OS.XmMERGE_REPLACE); |
| for (int i = 0; i < renditionCount; i++) OS.XmRenditionFree(renditions[i]); |
| } |
| /** |
| * 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 specifing 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (string.length() == 0) return; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| //TODO - honor flags |
| cairo_font_extents_t extents = new cairo_font_extents_t(); |
| Cairo.cairo_font_extents(cairo, extents); |
| double baseline = y + extents.ascent; |
| Cairo.cairo_move_to(cairo, x, baseline); |
| byte[] buffer = Converter.wcsToMbcs(null, string, true); |
| Cairo.cairo_show_text(cairo, buffer); |
| Cairo.cairo_new_path(cairo); |
| return; |
| } |
| setText(string, flags); |
| int xDisplay = data.display; |
| int xDrawable = data.drawable; |
| if (data.image != null) OS.XtRegisterDrawable (xDisplay, xDrawable, data.device.shellHandle); |
| int xmMnemonic = data.xmMnemonic; |
| if (xmMnemonic != 0) { |
| OS.XmStringDrawUnderline(xDisplay, xDrawable, data.renderTable, data.xmText, handle, x, y, 0x7FFFFFFF, OS.XmALIGNMENT_BEGINNING, 0, null, xmMnemonic); |
| } else { |
| if ((flags & SWT.DRAW_TRANSPARENT) != 0) { |
| OS.XmStringDraw(xDisplay, xDrawable, data.renderTable, data.xmText, handle, x, y, 0x7FFFFFFF, OS.XmALIGNMENT_BEGINNING, 0, null); |
| } else { |
| OS.XmStringDrawImage(xDisplay, xDrawable, data.renderTable, data.xmText, handle, x, y, 0x7FFFFFFF, OS.XmALIGNMENT_BEGINNING, 0, null); |
| } |
| } |
| if (data.image != null) OS.XtUnregisterDrawable (xDisplay, xDrawable); |
| } |
| /** |
| * Compares the argument to the receiver, and returns true |
| * if they represent the <em>same</em> object using a class |
| * specific comparison. |
| * |
| * @param object the object to compare with this object |
| * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise |
| * |
| * @see #hashCode |
| */ |
| public 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 == 0) 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; |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues (); |
| OS.XGetGCValues (xDisplay, handle, OS.GCForeground | OS.GCBackground, values); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (width == height) { |
| if (arcAngle >= 0) { |
| Cairo.cairo_arc_negative(cairo, x + width / 2f, y + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } else { |
| Cairo.cairo_arc(cairo, x + width / 2f, y + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } |
| Cairo.cairo_line_to(cairo, x + width / 2f, y + height / 2f); |
| } else { |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, x + width / 2f, y + height / 2f); |
| Cairo.cairo_scale(cairo, width / 2f, height / 2f); |
| if (arcAngle >= 0) { |
| Cairo.cairo_arc_negative(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } else { |
| Cairo.cairo_arc(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } |
| Cairo.cairo_line_to(cairo, 0, 0); |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_save(cairo); |
| if (data.backgroundPattern != null) { |
| Cairo.cairo_set_source(cairo, data.backgroundPattern.handle); |
| } else { |
| XColor color = new XColor(); |
| color.pixel = values.background; |
| OS.XQueryColor(xDisplay, data.colormap, color); |
| Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| Cairo.cairo_fill(cairo); |
| Cairo.cairo_restore(cairo); |
| return; |
| } |
| OS.XSetForeground (xDisplay, handle, values.background); |
| OS.XFillArc(xDisplay, data.drawable, handle, x, y, width, height, startAngle * 64, arcAngle * 64); |
| OS.XSetForeground (xDisplay, handle, values.foreground); |
| } |
| |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if ((width == 0) || (height == 0)) return; |
| int xDisplay = data.display; |
| int xScreenNum = OS.XDefaultScreen(xDisplay); |
| XGCValues values = new XGCValues(); |
| int fromColor, toColor; |
| OS.XGetGCValues(xDisplay, handle, OS.GCForeground | OS.GCBackground, values); |
| fromColor = values.foreground; |
| toColor = values.background; |
| 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) { |
| final int t = fromColor; |
| fromColor = toColor; |
| toColor = t; |
| } |
| if (fromColor == toColor) { |
| OS.XFillRectangle(xDisplay, data.drawable, handle, x, y, width, height); |
| return; |
| } |
| /* X Window deals with a virtually limitless array of color formats |
| * but we only distinguish between paletted and direct modes |
| */ |
| final int xScreen = OS.XDefaultScreenOfDisplay(xDisplay); |
| final int xVisual = OS.XDefaultVisual(xDisplay, xScreenNum); |
| Visual visual = new Visual(); |
| OS.memmove(visual, xVisual, Visual.sizeof); |
| final int depth = OS.XDefaultDepthOfScreen(xScreen); |
| final boolean directColor = (depth > 8); |
| |
| // This code is intentionally commented since elsewhere in SWT we |
| // assume that depth <= 8 means we are in a paletted mode though |
| // this is not always the case. |
| //final boolean directColor = (visual.c_class == OS.TrueColor) || (visual.c_class == OS.DirectColor); |
| |
| XColor xColor = new XColor(); |
| xColor.pixel = fromColor; |
| OS.XQueryColor(xDisplay, data.colormap, xColor); |
| final RGB fromRGB = new RGB((xColor.red & 0xffff) >>> 8, (xColor.green & 0xffff) >>> 8, (xColor.blue & 0xffff) >>> 8); |
| xColor.pixel = toColor; |
| OS.XQueryColor(xDisplay, data.colormap, xColor); |
| final RGB toRGB = new RGB((xColor.red & 0xffff) >>> 8, (xColor.green & 0xffff) >>> 8, (xColor.blue & 0xffff) >>> 8); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| int /*long*/ pattern; |
| if (vertical) { |
| pattern = Cairo.cairo_pattern_create_linear (0.0, 0.0, 0.0, 1.0); |
| } else { |
| pattern = Cairo.cairo_pattern_create_linear (0.0, 0.0, 1.0, 0.0); |
| } |
| Cairo.cairo_pattern_add_color_stop_rgba (pattern, 0, fromRGB.red / 255f, fromRGB.green / 255f, fromRGB.blue / 255f, 1); |
| Cairo.cairo_pattern_add_color_stop_rgba (pattern, 1, toRGB.red / 255f, toRGB.green / 255f, toRGB.blue / 255f, 1); |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, x, y); |
| Cairo.cairo_scale(cairo, width, height); |
| Cairo.cairo_rectangle(cairo, 0, 0, 1, 1); |
| Cairo.cairo_set_source(cairo, pattern); |
| Cairo.cairo_fill(cairo); |
| Cairo.cairo_restore(cairo); |
| Cairo.cairo_pattern_destroy(pattern); |
| return; |
| } |
| final int redBits, greenBits, blueBits; |
| if (directColor) { |
| // RGB mapped display |
| redBits = getChannelWidth(visual.red_mask); |
| greenBits = getChannelWidth(visual.green_mask); |
| blueBits = getChannelWidth(visual.blue_mask); |
| } else { |
| // Index display |
| redBits = greenBits = blueBits = 0; |
| } |
| ImageData.fillGradientRectangle(this, data.device, |
| x, y, width, height, vertical, fromRGB, toRGB, |
| redBits, greenBits, blueBits); |
| } |
| |
| /** |
| * Computes the required channel width (depth) from a mask. |
| */ |
| static int getChannelWidth(int mask) { |
| int width = 0; |
| while (mask != 0) { |
| width += (mask & 1); |
| mask >>>= 1; |
| } |
| return width; |
| } |
| |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| int display = data.display; |
| XGCValues values = new XGCValues (); |
| OS.XGetGCValues (display, handle, OS.GCForeground | OS.GCBackground, values); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (width == height) { |
| Cairo.cairo_arc_negative(cairo, x + width / 2f, y + height / 2f, width / 2f, 0, 2 * (float)Compatibility.PI); |
| } else { |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, x + width / 2f, y + height / 2f); |
| Cairo.cairo_scale(cairo, width / 2f, height / 2f); |
| Cairo.cairo_arc_negative(cairo, 0, 0, 1, 0, 2 * (float)Compatibility.PI); |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_save(cairo); |
| if (data.backgroundPattern != null) { |
| Cairo.cairo_set_source(cairo, data.backgroundPattern.handle); |
| } else { |
| XColor color = new XColor(); |
| color.pixel = values.background; |
| OS.XQueryColor(display, data.colormap, color); |
| Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| Cairo.cairo_fill(cairo); |
| Cairo.cairo_restore(cairo); |
| return; |
| } |
| OS.XSetForeground (display, handle, values.background); |
| OS.XFillArc (display, data.drawable, handle, x, y, width, height, 0, 23040); |
| OS.XSetForeground (display, handle, values.foreground); |
| } |
| /** |
| * Fills the path described by the parameter. |
| * |
| * @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> |
| * </ul> |
| * |
| * @see Path |
| * |
| * @since 3.1 |
| */ |
| public void fillPath (Path path) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (path.handle == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| initCairo(); |
| int display = data.display; |
| XGCValues values = new XGCValues (); |
| OS.XGetGCValues (display, handle, OS.GCForeground | OS.GCBackground, values); |
| XColor color = new XColor(); |
| color.pixel = values.background; |
| OS.XQueryColor(display, data.colormap, color); |
| int /*long*/ cairo = data.cairo; |
| Cairo.cairo_save(cairo); |
| if (data.backgroundPattern != null) { |
| Cairo.cairo_set_source(cairo, data.backgroundPattern.handle); |
| } else { |
| Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| int /*long*/ copy = Cairo.cairo_copy_path(path.handle); |
| if (copy == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_append_path(cairo, copy); |
| Cairo.cairo_path_destroy(copy); |
| Cairo.cairo_fill(cairo); |
| Cairo.cairo_restore(cairo); |
| } |
| /** |
| * Fills the interior of the closed polygon which is defined by the |
| * specified array of integer coordinates, using the receiver's |
| * background color. The array contains alternating x and y values |
| * which are considered to represent points which are the vertices of |
| * the polygon. Lines are drawn between each consecutive pair, and |
| * between the first pair and last pair in the array. |
| * |
| * @param pointArray an array of alternating x and y values which are the vertices of the polygon |
| * |
| * @exception 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues (); |
| OS.XGetGCValues (xDisplay, handle, OS.GCForeground | OS.GCBackground, values); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| XColor color = new XColor(); |
| color.pixel = values.background; |
| OS.XQueryColor(xDisplay, data.colormap, color); |
| Cairo.cairo_save(cairo); |
| if (data.backgroundPattern != null) { |
| Cairo.cairo_set_source(cairo, data.backgroundPattern.handle); |
| } else { |
| Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| drawPolyline(cairo, pointArray, true); |
| Cairo.cairo_fill(cairo); |
| Cairo.cairo_restore(cairo); |
| return; |
| } |
| short[] xPoints = new short[pointArray.length]; |
| for (int i = 0; i<pointArray.length;i++) { |
| xPoints[i] = (short) pointArray[i]; |
| } |
| OS.XSetForeground (xDisplay, handle, values.background); |
| OS.XFillPolygon(xDisplay, data.drawable, handle,xPoints, xPoints.length / 2, OS.Complex, OS.CoordModeOrigin); |
| OS.XSetForeground (xDisplay, handle, values.foreground); |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues (); |
| OS.XGetGCValues (xDisplay, handle, OS.GCForeground | OS.GCBackground, values); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| XColor color = new XColor(); |
| color.pixel = values.background; |
| OS.XQueryColor(xDisplay, data.colormap, color); |
| Cairo.cairo_save(cairo); |
| if (data.backgroundPattern != null) { |
| Cairo.cairo_set_source(cairo, data.backgroundPattern.handle); |
| } else { |
| Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| Cairo.cairo_rectangle(cairo, x, y, width, height); |
| Cairo.cairo_fill(cairo); |
| Cairo.cairo_restore(cairo); |
| return; |
| } |
| OS.XSetForeground (xDisplay, handle, values.background); |
| OS.XFillRectangle (xDisplay, data.drawable, handle, x, y, width, height); |
| OS.XSetForeground (xDisplay, handle, values.foreground); |
| } |
| /** |
| * 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 (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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int nx = x; |
| int ny = y; |
| int nw = width; |
| int nh = height; |
| int naw = arcWidth; |
| int nah = arcHeight; |
| if (nw < 0) { |
| nw = 0 - nw; |
| nx = nx - nw; |
| } |
| if (nh < 0) { |
| nh = 0 - nh; |
| ny = ny -nh; |
| } |
| if (naw < 0) naw = 0 - naw; |
| if (nah < 0) nah = 0 - nah; |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues (); |
| OS.XGetGCValues(xDisplay, handle, OS.GCForeground | OS.GCBackground, values); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| float naw2 = naw / 2f; |
| float nah2 = nah / 2f; |
| float fw = nw / naw2; |
| float fh = nh / nah2; |
| XColor color = new XColor(); |
| color.pixel = values.background; |
| OS.XQueryColor(xDisplay, data.colormap, color); |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, nx, ny); |
| Cairo.cairo_scale(cairo, naw2, nah2); |
| Cairo.cairo_move_to(cairo, fw - 1, 0); |
| Cairo.cairo_arc(cairo, fw - 1, 1, 1, Compatibility.PI + Compatibility.PI/2.0, Compatibility.PI*2.0); |
| Cairo.cairo_arc(cairo, fw - 1, fh - 1, 1, 0, Compatibility.PI/2.0); |
| Cairo.cairo_arc(cairo, 1, fh - 1, 1, Compatibility.PI/2, Compatibility.PI); |
| Cairo.cairo_arc(cairo, 1, 1, 1, Compatibility.PI, 270.0*Compatibility.PI/180.0); |
| Cairo.cairo_close_path(cairo); |
| Cairo.cairo_restore(cairo); |
| if (data.backgroundPattern != null) { |
| Cairo.cairo_set_source(cairo, data.backgroundPattern.handle); |
| } else { |
| Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| Cairo.cairo_fill(cairo); |
| Cairo.cairo_restore(cairo); |
| return; |
| } |
| int naw2 = naw / 2; |
| int nah2 = nah / 2; |
| int xDrawable = data.drawable; |
| OS.XSetForeground(xDisplay, handle, values.background); |
| if (nw > naw) { |
| if (nh > nah) { |
| OS.XFillArc(xDisplay, xDrawable, handle, nx, ny, naw, nah, 5760, 5760); |
| OS.XFillRectangle(xDisplay, xDrawable, handle, nx + naw2, ny, nw - naw2 * 2, nah2); |
| OS.XFillArc(xDisplay, xDrawable, handle, nx + nw - naw, ny, naw, nah, 0, 5760); |
| OS.XFillRectangle(xDisplay, xDrawable, handle, nx, ny + nah2, nw, nh - nah2 * 2); |
| OS.XFillArc(xDisplay, xDrawable, handle, nx + nw - naw, ny + nh - nah, naw, nah, 17280, 5760); |
| OS.XFillRectangle(xDisplay, xDrawable, handle, nx + naw2, ny + nh - nah2, nw - naw2 * 2, nah2); |
| OS.XFillArc(xDisplay, xDrawable, handle, nx, ny + nh - nah, naw, nah, 11520, 5760); |
| } else { |
| OS.XFillArc(xDisplay, xDrawable, handle, nx, ny, naw, nh, 5760, 11520); |
| OS.XFillRectangle(xDisplay, xDrawable, handle, nx + naw2, ny, nw - naw2 * 2, nh); |
| OS.XFillArc(xDisplay, xDrawable, handle, nx + nw - naw, ny, naw, nh, 17280, 11520); |
| } |
| } else { |
| if (nh > nah) { |
| OS.XFillArc(xDisplay, xDrawable, handle, nx, ny, nw, nah, 0, 11520); |
| OS.XFillRectangle(xDisplay, xDrawable, handle, nx, ny + nah2, nw, nh - nah2 * 2); |
| OS.XFillArc(xDisplay, xDrawable, handle, nx, ny + nh - nah, nw, nah, 11520, 11520); |
| } else { |
| OS.XFillArc(xDisplay, xDrawable, handle, nx, ny, nw, nh, 0, 23040); |
| } |
| } |
| OS.XSetForeground(xDisplay, handle, values.foreground); |
| } |
| char fixMnemonic(char[] text) { |
| char mnemonic=0; |
| int i=0, j=0; |
| while (i < text.length) { |
| if ((text [j++] = text [i++]) == '&') { |
| if (i == text.length) {continue;} |
| if (text [i] == '&') {i++; continue;} |
| if (mnemonic == 0) mnemonic = text [i]; |
| j--; |
| } |
| } |
| while (j < text.length) text [j++] = 0; |
| return mnemonic; |
| } |
| /** |
| * Returns the <em>advance width</em> of the specified character in |
| * the font which is currently selected into the receiver. |
| * <p> |
| * The advance width is defined as the horizontal distance the cursor |
| * should move after printing the character in the selected font. |
| * </p> |
| * |
| * @param ch the character to measure |
| * @return the distance in the x direction to move past the character before painting the next |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getAdvanceWidth(char ch) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int fontList = data.font.handle; |
| byte[] charBuffer = Converter.wcsToMbcs(getCodePage (), new char[] { ch }, false); |
| int val = charBuffer[0] & 0xFF; |
| /* Create a font context to iterate over each element in the font list */ |
| int[] buffer = new int[1]; |
| if (!OS.XmFontListInitFontContext(buffer, fontList)) { |
| SWT.error(SWT.ERROR_NO_HANDLES); |
| } |
| int context = buffer[0]; |
| XFontStruct fontStruct = new XFontStruct(); |
| XCharStruct charStruct = new XCharStruct(); |
| int fontListEntry; |
| int[] fontStructPtr = new int[1]; |
| int[] fontNamePtr = new int[1]; |
| /* Go through each entry in the font list. */ |
| while ((fontListEntry = OS.XmFontListNextEntry(context)) != 0) { |
| int fontPtr = OS.XmFontListEntryGetFont(fontListEntry, buffer); |
| if (buffer[0] == 0) { |
| OS.memmove(fontStruct, fontPtr, XFontStruct.sizeof); |
| /* FontList contains a single font */ |
| if (fontStruct.min_byte1 == 0 && fontStruct.max_byte1 == 0) { |
| /* Single byte fontStruct */ |
| if (fontStruct.min_char_or_byte2 <= val && val <= fontStruct.max_char_or_byte2) { |
| /* The font contains the character */ |
| int charWidth = 0; |
| int perCharPtr = fontStruct.per_char; |
| if (perCharPtr == 0) { |
| /* |
| * If perCharPtr is 0 then all glyphs in the font have |
| * the same width as the font's maximum width. |
| */ |
| charWidth = fontStruct.max_bounds_width; |
| } else { |
| OS.memmove(charStruct, perCharPtr + ((val - fontStruct.min_char_or_byte2) * XCharStruct.sizeof), XCharStruct.sizeof); |
| charWidth = charStruct.width; |
| } |
| if (charWidth != 0) { |
| OS.XmFontListFreeFontContext(context); |
| return charWidth; |
| } |
| } |
| } else { |
| /* Double byte fontStruct */ |
| int charsPerRow = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; |
| int row = 0; |
| if (charBuffer.length > 1) row = charBuffer[1] - fontStruct.min_byte1; |
| int col = charBuffer[0] - fontStruct.min_char_or_byte2; |
| if (row <= fontStruct.max_byte1 && col <= fontStruct.max_char_or_byte2) { |
| /* The font contains the character */ |
| int charWidth = 0; |
| int perCharPtr = fontStruct.per_char; |
| if (perCharPtr == 0) { |
| /* |
| * If perCharPtr is 0 then all glyphs in the font have |
| * the same width as the font's maximum width. |
| */ |
| charWidth = fontStruct.max_bounds_width; |
| } else { |
| int offset = row * charsPerRow + col; |
| OS.memmove(charStruct, perCharPtr + offset * XCharStruct.sizeof, XCharStruct.sizeof); |
| charWidth = charStruct.width; |
| } |
| if (charWidth != 0) { |
| OS.XmFontListFreeFontContext(context); |
| return charWidth; |
| } |
| } |
| } |
| } else { |
| /* FontList contains a fontSet */ |
| int nFonts = OS.XFontsOfFontSet(fontPtr, fontStructPtr, fontNamePtr); |
| int [] fontStructs = new int[nFonts]; |
| OS.memmove(fontStructs, fontStructPtr[0], nFonts * 4); |
| /* Go through each fontStruct in the font set */ |
| for (int i = 0; i < nFonts; i++) { |
| OS.memmove(fontStruct, fontStructs[i], XFontStruct.sizeof); |
| if (fontStruct.min_byte1 == 0 && fontStruct.max_byte1 == 0) { |
| /* Single byte fontStruct */ |
| if (fontStruct.min_char_or_byte2 <= val && val <= fontStruct.max_char_or_byte2) { |
| /* The font contains the character */ |
| int charWidth = 0; |
| int perCharPtr = fontStruct.per_char; |
| if (perCharPtr == 0) { |
| /* |
| * If perCharPtr is 0 then all glyphs in the font have |
| * the same width as the font's maximum width. |
| */ |
| charWidth = fontStruct.max_bounds_width; |
| } else { |
| OS.memmove(charStruct, perCharPtr + (val - fontStruct.min_char_or_byte2 * XCharStruct.sizeof), XCharStruct.sizeof); |
| charWidth = charStruct.width; |
| } |
| if (charWidth != 0) { |
| OS.XmFontListFreeFontContext(context); |
| return charWidth; |
| } |
| } |
| } else { |
| /* Double byte fontStruct */ |
| int charsPerRow = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; |
| int row = 0; |
| if (charBuffer.length > 1) row = charBuffer[1] - fontStruct.min_byte1; |
| int col = charBuffer[0] - fontStruct.min_char_or_byte2; |
| if (row <= fontStruct.max_byte1 && col <= fontStruct.max_char_or_byte2) { |
| /* The font contains the character */ |
| int charWidth = 0; |
| int perCharPtr = fontStruct.per_char; |
| if (perCharPtr == 0) { |
| /* |
| * If perCharPtr is 0 then all glyphs in the font have |
| * the same width as the font's maximum width. |
| */ |
| charWidth = fontStruct.max_bounds_width; |
| } else { |
| int offset = row * charsPerRow + col; |
| OS.memmove(charStruct, perCharPtr + offset * XCharStruct.sizeof, XCharStruct.sizeof); |
| charWidth = charStruct.width; |
| } |
| if (charWidth != 0) { |
| OS.XmFontListFreeFontContext(context); |
| return charWidth; |
| } |
| } |
| } |
| } |
| } |
| } |
| OS.XmFontListFreeFontContext(context); |
| return 0; |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.cairo != 0; |
| } |
| /** |
| * Returns the receiver's alpha value. |
| * |
| * @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 == 0) 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.cairo == 0) return SWT.DEFAULT; |
| int antialias = Cairo.cairo_get_antialias(data.cairo); |
| switch (antialias) { |
| case Cairo.CAIRO_ANTIALIAS_DEFAULT: return SWT.DEFAULT; |
| case Cairo.CAIRO_ANTIALIAS_NONE: return SWT.OFF; |
| case Cairo.CAIRO_ANTIALIAS_GRAY: |
| case Cairo.CAIRO_ANTIALIAS_SUBPIXEL: return SWT.ON; |
| } |
| return SWT.DEFAULT; |
| } |
| /** |
| * Returns the background color. |
| * |
| * @return the receiver's background color |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Color getBackground() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(xDisplay, handle, OS.GCBackground, values); |
| XColor xColor = new XColor(); |
| xColor.pixel = values.background; |
| OS.XQueryColor(xDisplay,data.colormap,xColor); |
| return Color.motif_new(data.device, xColor); |
| |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.backgroundPattern; |
| } |
| /** |
| * Returns the width of the specified character in the font |
| * selected into the receiver. |
| * <p> |
| * The width is defined as the space taken up by the actual |
| * character, not including the leading and tailing whitespace |
| * or overhang. |
| * </p> |
| * |
| * @param ch the character to measure |
| * @return the width of the character |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getCharWidth(char ch) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int fontList = data.font.handle; |
| byte[] charBuffer = Converter.wcsToMbcs(getCodePage (), new char[] { ch }, false); |
| int val = charBuffer[0] & 0xFF; |
| /* Create a font context to iterate over each element in the font list */ |
| int[] buffer = new int[1]; |
| if (!OS.XmFontListInitFontContext(buffer, fontList)) { |
| SWT.error(SWT.ERROR_NO_HANDLES); |
| } |
| int context = buffer[0]; |
| XFontStruct fontStruct = new XFontStruct(); |
| XCharStruct charStruct = new XCharStruct(); |
| int fontListEntry; |
| int[] fontStructPtr = new int[1]; |
| int[] fontNamePtr = new int[1]; |
| /* Go through each entry in the font list. */ |
| while ((fontListEntry = OS.XmFontListNextEntry(context)) != 0) { |
| int fontPtr = OS.XmFontListEntryGetFont(fontListEntry, buffer); |
| if (buffer[0] == 0) { |
| OS.memmove(fontStruct, fontPtr, XFontStruct.sizeof); |
| /* FontList contains a single font */ |
| if (fontStruct.min_byte1 == 0 && fontStruct.max_byte1 == 0) { |
| /* Single byte fontStruct */ |
| if (fontStruct.min_char_or_byte2 <= val && val <= fontStruct.max_char_or_byte2) { |
| /* The font contains the character */ |
| int charWidth = 0; |
| int lBearing = 0; |
| int rBearing = 0; |
| int perCharPtr = fontStruct.per_char; |
| if (perCharPtr == 0) { |
| /* |
| * If perCharPtr is 0 then all glyphs in the font have |
| * the same width and left/right bearings as the font. |
| */ |
| charWidth = fontStruct.max_bounds_width; |
| lBearing = fontStruct.min_bounds_lbearing; |
| rBearing = fontStruct.max_bounds_rbearing; |
| } else { |
| OS.memmove(charStruct, perCharPtr + ((val - fontStruct.min_char_or_byte2) * XCharStruct.sizeof), XCharStruct.sizeof); |
| charWidth = charStruct.width; |
| lBearing = charStruct.lbearing; |
| rBearing = charStruct.rbearing; |
| } |
| if (charWidth != 0) { |
| OS.XmFontListFreeFontContext(context); |
| return rBearing - lBearing; |
| } |
| } |
| } else { |
| /* Double byte fontStruct */ |
| int charsPerRow = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; |
| int row = 0; |
| if (charBuffer.length > 1) row = charBuffer[1] - fontStruct.min_byte1; |
| int col = charBuffer[0] - fontStruct.min_char_or_byte2; |
| if (row <= fontStruct.max_byte1 && col <= fontStruct.max_char_or_byte2) { |
| /* The font contains the character */ |
| int charWidth = 0; |
| int lBearing = 0; |
| int rBearing = 0; |
| int perCharPtr = fontStruct.per_char; |
| if (perCharPtr == 0) { |
| /* |
| * If perCharPtr is 0 then all glyphs in the font have |
| * the same width and left/right bearings as the font. |
| */ |
| charWidth = fontStruct.max_bounds_width; |
| lBearing = fontStruct.min_bounds_lbearing; |
| rBearing = fontStruct.max_bounds_rbearing; |
| } else { |
| int offset = row * charsPerRow + col; |
| OS.memmove(charStruct, perCharPtr + offset * XCharStruct.sizeof, XCharStruct.sizeof); |
| charWidth = charStruct.width; |
| lBearing = charStruct.lbearing; |
| rBearing = charStruct.rbearing; |
| } |
| if (charWidth != 0) { |
| OS.XmFontListFreeFontContext(context); |
| return rBearing - lBearing; |
| } |
| } |
| } |
| } else { |
| /* FontList contains a fontSet */ |
| int nFonts = OS.XFontsOfFontSet(fontPtr, fontStructPtr, fontNamePtr); |
| int [] fontStructs = new int[nFonts]; |
| OS.memmove(fontStructs, fontStructPtr[0], nFonts * 4); |
| /* Go through each fontStruct in the font set */ |
| for (int i = 0; i < nFonts; i++) { |
| OS.memmove(fontStruct, fontStructs[i], XFontStruct.sizeof); |
| if (fontStruct.min_byte1 == 0 && fontStruct.max_byte1 == 0) { |
| /* Single byte fontStruct */ |
| if (fontStruct.min_char_or_byte2 <= val && val <= fontStruct.max_char_or_byte2) { |
| /* The font contains the character */ |
| int charWidth = 0; |
| int lBearing = 0; |
| int rBearing = 0; |
| int perCharPtr = fontStruct.per_char; |
| if (perCharPtr == 0) { |
| /* |
| * If perCharPtr is 0 then all glyphs in the font have |
| * the same width and left/right bearings as the font. |
| */ |
| charWidth = fontStruct.max_bounds_width; |
| lBearing = fontStruct.min_bounds_lbearing; |
| rBearing = fontStruct.max_bounds_rbearing; |
| } else { |
| OS.memmove(charStruct, perCharPtr + (val - fontStruct.min_char_or_byte2 * XCharStruct.sizeof), XCharStruct.sizeof); |
| charWidth = charStruct.width; |
| lBearing = charStruct.lbearing; |
| rBearing = charStruct.rbearing; |
| } |
| if (charWidth != 0) { |
| OS.XmFontListFreeFontContext(context); |
| return rBearing - lBearing; |
| } |
| } |
| } else { |
| /* Double byte fontStruct */ |
| int charsPerRow = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; |
| int row = 0; |
| if (charBuffer.length > 1) row = charBuffer[1] - fontStruct.min_byte1; |
| int col = charBuffer[0] - fontStruct.min_char_or_byte2; |
| if (row <= fontStruct.max_byte1 && col <= fontStruct.max_char_or_byte2) { |
| /* The font contains the character */ |
| int charWidth = 0; |
| int lBearing = 0; |
| int rBearing = 0; |
| int perCharPtr = fontStruct.per_char; |
| if (perCharPtr == 0) { |
| /* |
| * If perCharPtr is 0 then all glyphs in the font have |
| * the same width and left/right bearings as the font. |
| */ |
| charWidth = fontStruct.max_bounds_width; |
| lBearing = fontStruct.min_bounds_lbearing; |
| rBearing = fontStruct.max_bounds_rbearing; |
| } else { |
| int offset = row * charsPerRow + col; |
| OS.memmove(charStruct, perCharPtr + offset * XCharStruct.sizeof, XCharStruct.sizeof); |
| charWidth = charStruct.width; |
| lBearing = charStruct.lbearing; |
| rBearing = charStruct.rbearing; |
| } |
| if (charWidth != 0) { |
| OS.XmFontListFreeFontContext(context); |
| return rBearing - lBearing; |
| } |
| } |
| } |
| } |
| } |
| } |
| OS.XmFontListFreeFontContext(context); |
| return 0; |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int[] width = new int[1], height = new int[1], unused = new int[1]; |
| OS.XGetGeometry(data.display, data.drawable, unused, unused, unused, width, height, unused, unused); |
| int clipRgn = data.clipRgn; |
| if (clipRgn == 0) { |
| return new Rectangle(0, 0, width[0], height[0]); |
| } else { |
| int rgn = OS.XCreateRegion (); |
| XRectangle rect = new XRectangle(); |
| rect.width = (short)width[0]; |
| rect.height = (short)height[0]; |
| OS.XUnionRectWithRegion(rect, rgn, rgn); |
| OS.XIntersectRegion(rgn, clipRgn, rgn); |
| OS.XClipBox(rgn, rect); |
| OS.XDestroyRegion(rgn); |
| return new Rectangle(rect.x, rect.y, rect.width, rect.height); |
| } |
| } |
| /** |
| * Sets the region managed by the argument to the current |
| * clipping region of the receiver. |
| * |
| * @param region the region to fill with the clipping region |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the region is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the region is disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void getClipping(Region region) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (region == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| int hRegion = region.handle; |
| OS.XSubtractRegion (hRegion, hRegion, hRegion); |
| int clipRgn = data.clipRgn; |
| if (clipRgn == 0) { |
| int[] width = new int[1], height = new int[1], unused = new int[1]; |
| OS.XGetGeometry(data.display, data.drawable, unused, unused, unused, width, height, unused, unused); |
| XRectangle rect = new XRectangle(); |
| rect.x = 0; |
| rect.y = 0; |
| rect.width = (short)width[0]; |
| rect.height = (short)height[0]; |
| OS.XUnionRectWithRegion(rect, hRegion, hRegion); |
| } else { |
| OS.XUnionRegion (hRegion, clipRgn, hRegion); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| double[] matrix = new double[]{1, 0, 0, 1, 0, 0}; |
| Cairo.cairo_get_matrix(cairo, matrix); |
| if (!isIdentity(matrix)) return; |
| } |
| } |
| if (data.damageRgn != 0) { |
| OS.XIntersectRegion(hRegion, data.damageRgn, hRegion); |
| } |
| } |
| String getCodePage () { |
| return data.font.codePage; |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(data.display, handle, OS.GCFillRule, values); |
| return values.fill_rule == OS.WindingRule ? SWT.FILL_WINDING : SWT.FILL_EVEN_ODD; |
| } |
| /** |
| * Returns the font currently being used by the receiver |
| * to draw and measure text. |
| * |
| * @return the receiver's font |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Font getFont () { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return Font.motif_new(data.device, data.font.handle); |
| } |
| int getFontHeight () { |
| int fontList = data.font.handle; |
| /* Create a font context to iterate over each element in the font list */ |
| int [] buffer = new int [1]; |
| if (!OS.XmFontListInitFontContext (buffer, fontList)) { |
| SWT.error(SWT.ERROR_NO_HANDLES); |
| } |
| int context = buffer [0]; |
| |
| /* Values discovering during iteration */ |
| int height = 0; |
| XFontStruct fontStruct = new XFontStruct (); |
| int fontListEntry; |
| int [] fontStructPtr = new int [1]; |
| int [] fontNamePtr = new int [1]; |
| |
| /* Go through each entry in the font list. */ |
| while ((fontListEntry = OS.XmFontListNextEntry (context)) != 0) { |
| int fontPtr = OS.XmFontListEntryGetFont (fontListEntry, buffer); |
| if (buffer [0] == 0) { |
| /* FontList contains a single font */ |
| OS.memmove (fontStruct, fontPtr, XFontStruct.sizeof); |
| int fontHeight = fontStruct.ascent + fontStruct.descent; |
| height = Math.max(height, fontHeight); |
| } else { |
| /* FontList contains a fontSet */ |
| int nFonts = OS.XFontsOfFontSet (fontPtr, fontStructPtr, fontNamePtr); |
| int [] fontStructs = new int [nFonts]; |
| OS.memmove (fontStructs, fontStructPtr [0], nFonts * 4); |
| |
| /* Go through each fontStruct in the font set */ |
| for (int i=0; i<nFonts; i++) { |
| OS.memmove (fontStruct, fontStructs[i], XFontStruct.sizeof); |
| int fontHeight = fontStruct.ascent + fontStruct.descent; |
| height = Math.max(height, fontHeight); |
| } |
| } |
| } |
| |
| OS.XmFontListFreeFontContext (context); |
| return height; |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int xDisplay = data.display; |
| Font font = data.font; |
| int fontList = font.handle; |
| /* Create a font context to iterate over each element in the font list */ |
| int[] buffer = new int[1]; |
| if (!OS.XmFontListInitFontContext(buffer, fontList)) { |
| SWT.error(SWT.ERROR_NO_HANDLES); |
| } |
| int context = buffer[0]; |
| /* Values discovering during iteration */ |
| int ascent = 0; |
| int descent = 0; |
| int averageCharWidth = 0, numAverageCharWidth = 0; |
| int leading = 0; |
| int height = 0; |
| |
| XFontStruct fontStruct = new XFontStruct(); |
| int fontListEntry; |
| int[] fontStructPtr = new int[1]; |
| int[] fontNamePtr = new int[1]; |
| /* Go through each entry in the font list. */ |
| while ((fontListEntry = OS.XmFontListNextEntry(context)) != 0) { |
| int fontPtr = OS.XmFontListEntryGetFont(fontListEntry, buffer); |
| if (buffer[0] == 0) { |
| /* FontList contains a single font */ |
| OS.memmove(fontStruct, fontPtr, XFontStruct.sizeof); |
| ascent = Math.max(ascent, fontStruct.ascent); |
| descent = Math.max(descent, fontStruct.descent); |
| int fontHeight = fontStruct.ascent + fontStruct.descent; |
| height = Math.max(height, fontHeight); |
| /* Calculate average character width */ |
| int propPtr = fontStruct.properties; |
| for (int i = 0; i < fontStruct.n_properties; i++) { |
| /* Look through properties for XAFONT */ |
| int[] prop = new int[2]; |
| OS.memmove(prop, propPtr, 8); |
| if (prop[0] == OS.XA_FONT) { |
| /* Found it, prop[1] points to the string */ |
| int ptr = OS.XmGetAtomName(xDisplay, prop[1]); |
| int length = OS.strlen(ptr); |
| byte[] nameBuf = new byte[length]; |
| OS.memmove(nameBuf, ptr, length); |
| OS.XFree(ptr); |
| String xlfd = new String(Converter.mbcsToWcs(null, nameBuf)).toLowerCase(); |
| int avg = 0; |
| try { |
| avg = FontData.motif_new(xlfd).averageWidth / 10; |
| } catch (Exception e) { |
| // leave avg unchanged so that it will be computed below |
| } |
| if (avg == 0) { |
| /* |
| * Not all fonts have average character width encoded |
| * in the xlfd. This one doesn't, so do it the hard |
| * way by averaging all the character widths. |
| */ |
| int perCharPtr = fontStruct.per_char; |
| if (perCharPtr == 0) { |
| /* |
| * If perCharPtr is 0 then all glyphs in the font have |
| * the same width as the font's maximum width. So no |
| * averaging is required. |
| */ |
| averageCharWidth = fontStruct.max_bounds_width; |
| } else { |
| int sum = 0, count = 0; |
| int cols = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; |
| XCharStruct struct = new XCharStruct(); |
| for (int index = 0; index < cols; index++) { |
| OS.memmove(struct, perCharPtr + (index * XCharStruct.sizeof), XCharStruct.sizeof); |
| int w = struct.width; |
| if (w != 0) { |
| sum += w; |
| count++; |
| } |
| } |
| averageCharWidth += sum / count; |
| } |
| } else { |
| /* Average character width was in the xlfd */ |
| averageCharWidth += avg; |
| } |
| numAverageCharWidth++; |
| break; |
| } |
| propPtr += 8; |
| } |
| } else { |
| /* FontList contains a fontSet */ |
| int nFonts = OS.XFontsOfFontSet(fontPtr, fontStructPtr, fontNamePtr); |
| int [] fontStructs = new int[nFonts]; |
| OS.memmove(fontStructs, fontStructPtr[0], nFonts * 4); |
| /* Go through each fontStruct in the font set */ |
| for (int i = 0; i < nFonts; i++) { |
| OS.memmove(fontStruct, fontStructs[i], XFontStruct.sizeof); |
| ascent = Math.max(ascent, fontStruct.ascent); |
| descent = Math.max(descent, fontStruct.descent); |
| int fontHeight = fontStruct.ascent + fontStruct.descent; |
| height = Math.max(height, fontHeight); |
| /* Calculate average character width */ |
| int propPtr = fontStruct.properties; |
| for (int j = 0; j < fontStruct.n_properties; j++) { |
| /* Look through properties for XAFONT */ |
| int[] prop = new int[2]; |
| OS.memmove(prop, propPtr, 8); |
| if (prop[0] == OS.XA_FONT) { |
| /* Found it, prop[1] points to the string */ |
| int ptr = OS.XmGetAtomName(xDisplay, prop[1]); |
| int length = OS.strlen(ptr); |
| byte[] nameBuf = new byte[length]; |
| OS.memmove(nameBuf, ptr, length); |
| OS.XFree(ptr); |
| String xlfd = new String(Converter.mbcsToWcs(null, nameBuf)).toLowerCase(); |
| int avg = 0; |
| try { |
| avg = FontData.motif_new(xlfd).averageWidth / 10; |
| } catch (Exception e) { |
| /* |
| * Some font servers, for example, xfstt, do not pass |
| * reasonable font properties to the client, so we |
| * cannot construct a FontData for these. Use the font |
| * name instead. |
| */ |
| int[] fontName = new int[1]; |
| OS.memmove(fontName, fontNamePtr [0] + (i * 4), 4); |
| ptr = fontName[0]; |
| if (ptr != 0 ) { |
| length = OS.strlen(ptr); |
| nameBuf = new byte[length]; |
| OS.memmove(nameBuf, ptr, length); |
| xlfd = new String(Converter.mbcsToWcs(null, nameBuf)).toLowerCase(); |
| try { |
| avg = FontData.motif_new(xlfd).averageWidth / 10; |
| } catch (Exception ex) { |
| // leave avg unchanged (0) so that it will be computed below |
| } |
| } |
| } |
| if (avg == 0) { |
| /* |
| * Not all fonts have average character width encoded |
| * in the xlfd. This one doesn't, so do it the hard |
| * way by averaging all the character widths. |
| */ |
| int perCharPtr = fontStruct.per_char; |
| if (perCharPtr == 0) { |
| /* |
| * If perCharPtr is 0 then all glyphs in the font have |
| * the same width as the font's maximum width. So no |
| * averaging is required. |
| */ |
| averageCharWidth = fontStruct.max_bounds_width; |
| } else { |
| int sum = 0, count = 0; |
| int cols = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; |
| XCharStruct struct = new XCharStruct(); |
| for (int index = 0; index < cols; index++) { |
| OS.memmove(struct, perCharPtr + (index * XCharStruct.sizeof), XCharStruct.sizeof); |
| int w = struct.width; |
| if (w != 0) { |
| sum += w; |
| count++; |
| } |
| } |
| averageCharWidth += sum / count; |
| } |
| } else { |
| /* Average character width was in the xlfd */ |
| averageCharWidth += avg; |
| } |
| numAverageCharWidth++; |
| break; |
| } |
| propPtr += 8; |
| } |
| } |
| } |
| } |
| OS.XmFontListFreeFontContext(context); |
| return FontMetrics.motif_new(ascent, descent, averageCharWidth / numAverageCharWidth, leading, height); |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(xDisplay, handle, OS.GCForeground, values); |
| XColor xColor = new XColor(); |
| xColor.pixel = values.foreground; |
| OS.XQueryColor(xDisplay,data.colormap,xColor); |
| return Color.motif_new(data.device, xColor); |
| |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.foregroundPattern; |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.interpolation; |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(data.display, handle, OS.GCCapStyle, values); |
| int cap = SWT.CAP_FLAT; |
| switch (values.cap_style) { |
| case OS.CapRound: cap = SWT.CAP_ROUND; break; |
| case OS.CapButt: cap = SWT.CAP_FLAT; break; |
| case OS.CapProjecting: cap = SWT.CAP_SQUARE; break; |
| } |
| return cap; |
| } |
| /** |
| * Returns the receiver's line dash style. The default value is |
| * <code>null</code>. |
| * |
| * @return the lin 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int[] dash_list = data.dashes; |
| if (dash_list == null) return null; |
| int[] dashes = new int[dash_list.length]; |
| System.arraycopy(dash_list, 0, dashes, 0, dashes.length); |
| return dashes; |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(data.display, handle, OS.GCJoinStyle, values); |
| int join = SWT.JOIN_MITER; |
| switch (values.join_style) { |
| case OS.JoinMiter: join = SWT.JOIN_MITER; break; |
| case OS.JoinRound: join = SWT.JOIN_ROUND; break; |
| case OS.JoinBevel: join = SWT.JOIN_BEVEL; break; |
| } |
| return join; |
| } |
| /** |
| * 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 == 0) 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(data.display, handle, OS.GCLineWidth, values); |
| return values.line_width; |
| } |
| /** |
| * 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 == 0) 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.cairo == 0) return SWT.DEFAULT; |
| int /*long*/ options = Cairo.cairo_font_options_create(); |
| Cairo.cairo_get_font_options(data.cairo, options); |
| int antialias = Cairo.cairo_font_options_get_antialias(options); |
| Cairo.cairo_font_options_destroy(options); |
| switch (antialias) { |
| case Cairo.CAIRO_ANTIALIAS_DEFAULT: return SWT.DEFAULT; |
| case Cairo.CAIRO_ANTIALIAS_NONE: return SWT.OFF; |
| case Cairo.CAIRO_ANTIALIAS_GRAY: |
| case Cairo.CAIRO_ANTIALIAS_SUBPIXEL: return SWT.ON; |
| } |
| return SWT.DEFAULT; |
| } |
| /** |
| * Sets the parameter to the transform that is currently being |
| * used by the receiver. |
| * |
| * @param transform the destination to copy the transform into |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see Transform |
| * |
| * @since 3.1 |
| */ |
| public void getTransform(Transform transform) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (transform == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_get_matrix(cairo, transform.handle); |
| } 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| XGCValues values = new XGCValues (); |
| OS.XGetGCValues (data.display, handle, OS.GCFunction, values); |
| return values.function == OS.GXxor; |
| } |
| /** |
| * Returns an integer hash code for the receiver. Any two |
| * objects that return <code>true</code> when passed to |
| * <code>equals</code> must return the same value for this |
| * method. |
| * |
| * @return the receiver's hash |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #equals |
| */ |
| public int hashCode () { |
| return handle; |
| } |
| void init(Drawable drawable, GCData data, int xGC) { |
| int xDisplay = data.display; |
| int foreground = data.foreground; |
| if (foreground != -1) OS.XSetForeground (xDisplay, xGC, foreground); |
| int background = data.background; |
| if (background != -1) OS.XSetBackground (xDisplay, xGC, background); |
| Image image = data.image; |
| if (image != null) { |
| image.memGC = this; |
| /* |
| * The transparent pixel mask might change when drawing on |
| * the image. Destroy it so that it is regenerated when |
| * necessary. |
| */ |
| if (image.transparentPixel != -1) image.destroyMask(); |
| } |
| this.drawable = drawable; |
| this.data = data; |
| handle = xGC; |
| } |
| void initCairo() { |
| data.device.checkCairo(); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) return; |
| int xDisplay = data.display; |
| int xDrawable = data.drawable; |
| int xVisual = OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay)); |
| int[] width = new int[1], height = new int[1], unused = new int[1]; |
| OS.XGetGeometry(xDisplay, xDrawable, unused, unused, unused, width, height, unused, unused); |
| int /*long*/ surface = Cairo.cairo_xlib_surface_create(xDisplay, xDrawable, xVisual, width[0], height[0]); |
| if (surface == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| data.cairo = cairo = Cairo.cairo_create(surface); |
| Cairo.cairo_surface_destroy(surface); |
| if (cairo == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_set_fill_rule(cairo, Cairo.CAIRO_FILL_RULE_EVEN_ODD); |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(xDisplay, handle, OS.GCBackground | OS.GCCapStyle | OS.GCForeground | OS.GCJoinStyle | OS.GCLineWidth, values); |
| XColor color = new XColor(); |
| color.pixel = values.foreground; |
| OS.XQueryColor(xDisplay, data.colormap, color); |
| Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| Cairo.cairo_set_line_width(cairo, Math.max(1, values.line_width)); |
| int cap = Cairo.CAIRO_LINE_CAP_BUTT; |
| switch (values.cap_style) { |
| case OS.CapRound: cap = Cairo.CAIRO_LINE_CAP_ROUND; break; |
| case OS.CapButt: cap = Cairo.CAIRO_LINE_CAP_BUTT; break; |
| case OS.CapProjecting: cap = Cairo.CAIRO_LINE_CAP_SQUARE; break; |
| } |
| Cairo.cairo_set_line_cap(cairo, cap); |
| int join = Cairo.CAIRO_LINE_JOIN_MITER; |
| switch (values.join_style) { |
| case OS.JoinMiter: join = Cairo.CAIRO_LINE_JOIN_MITER; break; |
| case OS.JoinRound: join = Cairo.CAIRO_LINE_JOIN_ROUND; break; |
| case OS.JoinBevel: join = Cairo.CAIRO_LINE_JOIN_BEVEL; break; |
| } |
| Cairo.cairo_set_line_join(cairo, join); |
| if (data.dashes != null) { |
| double[] dashes = new double[data.dashes.length]; |
| for (int i = 0; i < dashes.length; i++) { |
| dashes[i] = data.dashes[i]; |
| } |
| Cairo.cairo_set_dash(cairo, dashes, dashes.length, 0); |
| } |
| setCairoFont(cairo, data.font); |
| setCairoClip(cairo, data.clipRgn); |
| } |
| /** |
| * Returns <code>true</code> if the receiver has a clipping |
| * region set into it, and <code>false</code> otherwise. |
| * If this method returns false, the receiver will draw on all |
| * available space in the destination. If it returns true, |
| * it will draw only in the area that is covered by the region |
| * that can be accessed with <code>getClipping(region)</code>. |
| * |
| * @return <code>true</code> if the GC has a clipping region, and <code>false</code> otherwise |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public boolean isClipped() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.clipRgn != 0; |
| } |
| /** |
| * Returns <code>true</code> if the GC has been disposed, |
| * and <code>false</code> otherwise. |
| * <p> |
| * This method gets the dispose state for the GC. |
| * When a GC has been disposed, it is an error to |
| * invoke any other method using the GC. |
| * |
| * @return <code>true</code> when the GC is disposed and <code>false</code> otherwise |
| */ |
| public boolean isDisposed() { |
| return handle == 0; |
| } |
| boolean isIdentity(double[] matrix) { |
| if (matrix == null) return true; |
| return matrix[0] == 1 && matrix[1] == 0 && matrix[2] == 0 && matrix[3] == 1 && matrix[4] == 0 && matrix[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 #setInterpolation |
| * @see #setTextAntialias |
| * @see #setTransform |
| * @see #getAdvanced |
| * |
| * @since 3.1 |
| */ |
| public void setAdvanced(boolean advanced) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (advanced && data.cairo != 0) return; |
| if (advanced) { |
| try { |
| initCairo(); |
| } catch (SWTException e) {} |
| } else { |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) Cairo.cairo_destroy(cairo); |
| data.cairo = 0; |
| data.interpolation = SWT.DEFAULT; |
| data.backgroundPattern = data.foregroundPattern = null; |
| setClipping(0); |
| } |
| } |
| /** |
| * Sets the receiver's alpha value. |
| * |
| * @param alpha the alpha value |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public void setAlpha(int alpha) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.cairo == 0 && (alpha & 0xff) == 0xff) return; |
| initCairo(); |
| data.alpha = alpha & 0xff; |
| if (data.foregroundPattern == null) { |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(xDisplay, handle, OS.GCForeground, values); |
| XColor color = new XColor(); |
| color.pixel = values.foreground; |
| OS.XQueryColor(xDisplay, data.colormap, color); |
| int /*long*/ cairo = data.cairo; |
| Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| } |
| /** |
| * 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. |
| * |
| * @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> |
| * </ul> |
| * |
| * @see #setTextAntialias |
| * |
| * @since 3.1 |
| */ |
| public void setAntialias(int antialias) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.cairo == 0 && antialias == SWT.DEFAULT) return; |
| int mode = 0; |
| switch (antialias) { |
| case SWT.DEFAULT: mode = Cairo.CAIRO_ANTIALIAS_DEFAULT; break; |
| case SWT.OFF: mode = Cairo.CAIRO_ANTIALIAS_NONE; break; |
| case SWT.ON: mode = Cairo.CAIRO_ANTIALIAS_GRAY; |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| initCairo(); |
| int /*long*/ cairo = data.cairo; |
| Cairo.cairo_set_antialias(cairo, mode); |
| } |
| /** |
| * 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> |
| */ |
| public static GC motif_new(Drawable drawable, GCData data) { |
| GC gc = new GC(); |
| int xGC = drawable.internal_new_GC(data); |
| gc.device = data.device; |
| gc.init(drawable, data, xGC); |
| return gc; |
| } |
| /** |
| * Invokes platform specific functionality to wrap a 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 xGC the X Windows graphics context. |
| * @param data the data for the receiver. |
| * |
| * @return a new <code>GC</code> |
| */ |
| public static GC motif_new(int xGC, GCData data) { |
| GC gc = new GC(); |
| gc.device = data.device; |
| gc.init(null, data, xGC); |
| return gc; |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| OS.XSetBackground(data.display, handle, color.handle.pixel); |
| data.backgroundPattern = null; |
| } |
| /** |
| * Sets the background pattern. The default value is <code>null</code>. |
| * |
| * @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> |
| * </ul> |
| * |
| * @see Pattern |
| * |
| * @since 3.1 |
| */ |
| public void setBackgroundPattern(Pattern pattern) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (data.cairo == 0 && pattern == null) return; |
| initCairo(); |
| data.backgroundPattern = pattern; |
| } |
| static void setCairoFont(int /*long*/ cairo, Font font) { |
| //TODO - use X font instead of loading new one??? |
| FontData[] fds = font.getFontData(); |
| FontData fd = fds[0]; |
| int style = fd.getStyle(); |
| int slant = Cairo.CAIRO_FONT_SLANT_NORMAL; |
| if ((style & SWT.ITALIC) != 0) slant = Cairo.CAIRO_FONT_SLANT_ITALIC; |
| int weight = Cairo.CAIRO_FONT_WEIGHT_NORMAL; |
| if ((style & SWT.BOLD) != 0) weight = Cairo.CAIRO_FONT_WEIGHT_BOLD; |
| byte[] buffer = Converter.wcsToMbcs(null, fd.getName(), true); |
| Cairo.cairo_select_font_face(cairo, buffer, slant, weight); |
| Cairo.cairo_set_font_size(cairo, fd.getHeight()); |
| } |
| static void setCairoClip(int /*long*/ cairo, int /*long*/ clipRgn) { |
| Cairo.cairo_reset_clip(cairo); |
| if (clipRgn == 0) return; |
| //TODO - get rectangles from region instead of clip box |
| XRectangle rect = new XRectangle(); |
| OS.XClipBox(clipRgn, rect); |
| Cairo.cairo_rectangle(cairo, rect.x, rect.y, rect.width, rect.height); |
| Cairo.cairo_clip(cairo); |
| Cairo.cairo_new_path(cairo); |
| } |
| static void setCairoPatternColor(int /*long*/ pattern, int offset, Color c, int alpha) { |
| XColor color = c.handle; |
| double aa = (alpha & 0xFF) / (double)0xFF; |
| double red = ((color.red & 0xFFFF) / (double)0xFFFF); |
| double green = ((color.green & 0xFFFF) / (double)0xFFFF); |
| double blue = ((color.blue & 0xFFFF) / (double)0xFFFF); |
| Cairo.cairo_pattern_add_color_stop_rgba(pattern, offset, red, green, blue, aa); |
| } |
| void setClipping(int clipRgn) { |
| if (clipRgn == 0) { |
| if (data.clipRgn != 0) { |
| OS.XDestroyRegion (data.clipRgn); |
| data.clipRgn = 0; |
| } else { |
| return; |
| } |
| if (data.damageRgn == 0) { |
| OS.XSetClipMask (data.display, handle, OS.None); |
| } else { |
| OS.XSetRegion (data.display, handle, data.damageRgn); |
| } |
| } else { |
| if (data.clipRgn == 0) data.clipRgn = OS.XCreateRegion (); |
| OS.XSubtractRegion (data.clipRgn, data.clipRgn, data.clipRgn); |
| OS.XUnionRegion (clipRgn, data.clipRgn, data.clipRgn); |
| int clipping = clipRgn; |
| if (data.damageRgn != 0) { |
| clipping = OS.XCreateRegion(); |
| OS.XUnionRegion(clipping, clipRgn, clipping); |
| OS.XIntersectRegion(clipping, data.damageRgn, clipping); |
| } |
| OS.XSetRegion (data.display, handle, clipping); |
| if (clipping != clipRgn) OS.XDestroyRegion(clipping); |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| setCairoClip(cairo, clipRgn); |
| } |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| XRectangle rect = new XRectangle (); |
| rect.x = (short) x; |
| rect.y = (short) y; |
| rect.width = (short) Math.max (0, width); |
| rect.height = (short) Math.max (0, height); |
| int clipRgn = OS.XCreateRegion(); |
| OS.XUnionRectWithRegion(rect, clipRgn, clipRgn); |
| setClipping(clipRgn); |
| OS.XDestroyRegion(clipRgn); |
| } |
| /** |
| * Sets the area of the receiver which can be changed |
| * by drawing operations to the path specified |
| * by the argument. |
| * |
| * @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> |
| * </ul> |
| * |
| * @see Path |
| * |
| * @since 3.1 |
| */ |
| public void setClipping(Path path) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (path != null && path.isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| setClipping(0); |
| if (path != null) { |
| initCairo(); |
| int /*long*/ cairo = data.cairo; |
| int /*long*/ copy = Cairo.cairo_copy_path(path.handle); |
| if (copy == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_append_path(cairo, copy); |
| Cairo.cairo_path_destroy(copy); |
| Cairo.cairo_clip(cairo); |
| Cairo.cairo_new_path(cairo); |
| } |
| } |
| /** |
| * Sets the area of the receiver which can be changed |
| * by drawing operations to the rectangular area specified |
| * by the argument. Specifying <code>null</code> for the |
| * rectangle reverts the receiver's clipping area to its |
| * original value. |
| * |
| * @param rect the clipping rectangle or <code>null</code> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setClipping (Rectangle rect) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (rect == null) { |
| setClipping(0); |
| } 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (region != null && region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| setClipping(region != null ? region.handle : 0); |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int mode = OS.EvenOddRule, cairo_mode = Cairo.CAIRO_FILL_RULE_EVEN_ODD; |
| switch (rule) { |
| case SWT.FILL_WINDING: |
| mode = OS.WindingRule; cairo_mode = Cairo.CAIRO_FILL_RULE_WINDING; break; |
| case SWT.FILL_EVEN_ODD: |
| mode = OS.EvenOddRule; cairo_mode = Cairo.CAIRO_FILL_RULE_EVEN_ODD; break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| OS.XSetFillRule(data.display, handle, mode); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_set_fill_rule(cairo, cairo_mode); |
| } |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (font == null) font = data.device.systemFont; |
| if (font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| data.font = font; |
| if (data.renderTable != 0) OS.XmRenderTableFree(data.renderTable); |
| data.renderTable = 0; |
| data.stringWidth = data.stringHeight = data.textWidth = data.textHeight = -1; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| setCairoFont(cairo, 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| OS.XSetForeground(data.display, handle, color.handle.pixel); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| XColor xColor = color.handle; |
| Cairo.cairo_set_source_rgba(cairo, (xColor.red & 0xFFFF) / (float)0xFFFF, (xColor.green & 0xFFFF) / (float)0xFFFF, (xColor.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| data.foregroundPattern = null; |
| } |
| /** |
| * Sets the foreground pattern. The default value is <code>null</code>. |
| * |
| * @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> |
| * </ul> |
| * |
| * @see Pattern |
| * |
| * @since 3.1 |
| */ |
| public void setForegroundPattern(Pattern pattern) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (data.cairo == 0 && pattern == null) return; |
| initCairo(); |
| int /*long*/ cairo = data.cairo; |
| if (pattern != null) { |
| Cairo.cairo_set_source(cairo, pattern.handle); |
| } else { |
| int display = data.display; |
| XGCValues values = new XGCValues (); |
| OS.XGetGCValues (display, handle, OS.GCForeground, values); |
| XColor color = new XColor(); |
| color.pixel = values.foreground; |
| OS.XQueryColor(display, data.colormap, color); |
| Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| data.foregroundPattern = pattern; |
| } |
| /** |
| * 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>. |
| * |
| * @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> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public void setInterpolation(int interpolation) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.cairo == 0 && interpolation == SWT.DEFAULT) return; |
| switch (interpolation) { |
| case SWT.DEFAULT: |
| case SWT.NONE: |
| case SWT.LOW: |
| case SWT.HIGH: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| initCairo(); |
| data.interpolation = interpolation; |
| } |
| /** |
| * Sets the receiver's line 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int cap_style = 0, cairo_style = 0; |
| switch (cap) { |
| case SWT.CAP_ROUND: |
| cap_style = OS.CapRound; |
| cairo_style = Cairo.CAIRO_LINE_CAP_ROUND; |
| break; |
| case SWT.CAP_FLAT: |
| cap_style = OS.CapButt; |
| cairo_style = Cairo.CAIRO_LINE_CAP_BUTT; |
| break; |
| case SWT.CAP_SQUARE: |
| cap_style = OS.CapProjecting; |
| cairo_style = Cairo.CAIRO_LINE_CAP_SQUARE; |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(xDisplay, handle, OS.GCLineWidth | OS.GCJoinStyle, values); |
| int line_style = data.lineStyle == SWT.LINE_SOLID ? OS.LineSolid : OS.LineOnOffDash; |
| OS.XSetLineAttributes(xDisplay, handle, values.line_width, line_style, cap_style, values.join_style); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_set_line_cap(cairo, cairo_style); |
| } |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int xDisplay = data.display; |
| if (dashes != null && dashes.length != 0) { |
| byte[] dash_list = new byte[dashes.length]; |
| for (int i = 0; i < dashes.length; i++) { |
| int dash = dashes[i]; |
| if (dash <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| dash_list[i] = (byte)dash; |
| } |
| OS.XSetDashes(xDisplay, handle, 0, dash_list, dash_list.length); |
| data.dashes = new int[dashes.length]; |
| System.arraycopy(dashes, 0, data.dashes, 0, dashes.length); |
| data.lineStyle = SWT.LINE_CUSTOM; |
| } else { |
| data.dashes = null; |
| data.lineStyle = SWT.LINE_SOLID; |
| } |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(xDisplay, handle, OS.GCLineWidth | OS.GCCapStyle | OS.GCJoinStyle, values); |
| int line_style = data.lineStyle == SWT.LINE_SOLID ? OS.LineSolid : OS.LineOnOffDash; |
| OS.XSetLineAttributes(xDisplay, handle, values.line_width, line_style, values.cap_style, values.join_style); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (data.dashes != null) { |
| double[] cairoDashes = new double[data.dashes.length]; |
| for (int i = 0; i < dashes.length; i++) { |
| cairoDashes[i] = data.dashes[i]; |
| } |
| Cairo.cairo_set_dash(cairo, cairoDashes, cairoDashes.length, 0); |
| } else { |
| Cairo.cairo_set_dash(cairo, null, 0, 0); |
| } |
| } |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int join_style = 0, cairo_style = 0; |
| switch (join) { |
| case SWT.JOIN_MITER: |
| join_style = OS.JoinMiter; |
| cairo_style = Cairo.CAIRO_LINE_JOIN_MITER; |
| break; |
| case SWT.JOIN_ROUND: |
| join_style = OS.JoinRound; |
| cairo_style = Cairo.CAIRO_LINE_JOIN_ROUND; |
| break; |
| case SWT.JOIN_BEVEL: |
| join_style = OS.JoinBevel; |
| cairo_style = Cairo.CAIRO_LINE_JOIN_BEVEL; |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(xDisplay, handle, OS.GCLineWidth | OS.GCCapStyle, values); |
| int line_style = data.lineStyle == SWT.LINE_SOLID ? OS.LineSolid : OS.LineOnOffDash; |
| OS.XSetLineAttributes(xDisplay, handle, values.line_width, line_style, values.cap_style, join_style); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_set_line_join(cairo, cairo_style); |
| } |
| } |
| /** |
| * 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(xDisplay, handle, OS.GCLineWidth | OS.GCCapStyle | OS.GCJoinStyle, values); |
| int[] dashes = null; |
| int width = values.line_width; |
| switch (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.dashes; |
| if (dashes == null) lineStyle = SWT.LINE_SOLID; |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| data.lineStyle = lineStyle; |
| OS.XSetLineAttributes(xDisplay, handle, values.line_width, dashes != null ? OS.LineOnOffDash : OS.LineSolid, values.cap_style, values.join_style); |
| if (dashes != null) { |
| byte[] dash_list = new byte[dashes.length]; |
| for (int i = 0; i < dash_list.length; i++) { |
| dash_list[i] = (byte)(width == 0 ? dashes[i] : dashes[i] * width); |
| } |
| OS.XSetDashes(xDisplay, handle, 0, dash_list, dash_list.length); |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (dashes != null) { |
| double[] cairoDashes = new double[dashes.length]; |
| for (int i = 0; i < cairoDashes.length; i++) { |
| cairoDashes[i] = width == 0 ? dashes[i] : dashes[i] * width; |
| } |
| Cairo.cairo_set_dash(cairo, cairoDashes, cairoDashes.length, 0); |
| } else { |
| Cairo.cairo_set_dash(cairo, null, 0, 0); |
| } |
| } |
| } |
| /** |
| * Sets the width that will be used when drawing lines |
| * for all of the figure drawing operations (that is, |
| * <code>drawLine</code>, <code>drawRectangle</code>, |
| * <code>drawPolyline</code>, and so forth. |
| * <p> |
| * Note that line width of zero is used as a hint to |
| * indicate that the fastest possible line drawing |
| * algorithms should be used. This means that the |
| * output may be different from line width one. |
| * </p> |
| * |
| * @param lineWidth the width of a line |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setLineWidth(int lineWidth) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int xDisplay = data.display; |
| XGCValues values = new XGCValues(); |
| OS.XGetGCValues(xDisplay, handle, OS.GCLineWidth | OS.GCCapStyle | OS.GCJoinStyle, values); |
| int line_style = data.lineStyle == SWT.LINE_SOLID ? OS.LineSolid : OS.LineOnOffDash; |
| OS.XSetLineAttributes(data.display, handle, lineWidth, line_style, values.cap_style, values.join_style); |
| data.lineWidth = lineWidth; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_set_line_width(cairo, Math.max(1, lineWidth)); |
| } |
| switch (data.lineStyle) { |
| case SWT.LINE_DOT: |
| case SWT.LINE_DASH: |
| case SWT.LINE_DASHDOT: |
| case SWT.LINE_DASHDOTDOT: |
| setLineStyle(data.lineStyle); |
| } |
| } |
| void setString(String string) { |
| if (string == data.string) return; |
| if (data.xmString != 0) OS.XmStringFree(data.xmString); |
| byte[] buffer = Converter.wcsToMbcs(getCodePage (), string, true); |
| data.xmString = OS.XmStringCreate(buffer, OS.XmFONTLIST_DEFAULT_TAG); |
| data.string = string; |
| data.stringWidth = data.stringHeight = -1; |
| } |
| void setText(String string, int flags) { |
| if (data.renderTable == 0) createRenderTable(); |
| if (string == data.text && (flags & ~SWT.DRAW_TRANSPARENT) == (data.drawFlags & ~SWT.DRAW_TRANSPARENT)) { |
| return; |
| } |
| if (data.xmText != 0) OS.XmStringFree(data.xmText); |
| if (data.xmMnemonic != 0) OS.XmStringFree(data.xmMnemonic); |
| char mnemonic = 0; |
| int tableLength = 0; |
| Device device = data.device; |
| int[] parseTable = new int[2]; |
| char[] text = new char[string.length()]; |
| string.getChars(0, text.length, text, 0); |
| if ((flags & SWT.DRAW_DELIMITER) != 0) parseTable[tableLength++] = device.crMapping; |
| if ((flags & SWT.DRAW_TAB) != 0) parseTable[tableLength++] = device.tabMapping; |
| if ((flags & SWT.DRAW_MNEMONIC) != 0) mnemonic = fixMnemonic(text); |
| String codePage = getCodePage(); |
| byte[] buffer = Converter.wcsToMbcs(codePage, text, true); |
| data.xmText = OS.XmStringParseText(buffer, 0, OS.XmFONTLIST_DEFAULT_TAG, OS.XmCHARSET_TEXT, parseTable, tableLength, 0); |
| if (mnemonic != 0) { |
| byte [] buffer1 = Converter.wcsToMbcs(codePage, new char[]{mnemonic}, true); |
| data.xmMnemonic = OS.XmStringCreate (buffer1, OS.XmFONTLIST_DEFAULT_TAG); |
| } else { |
| data.xmMnemonic = 0; |
| } |
| data.text = string; |
| data.textWidth = data.textHeight = -1; |
| data.drawFlags = flags; |
| } |
| /** |
| * Sets the receiver's text anti-aliasing value to the parameter, |
| * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> |
| * or <code>SWT.ON</code>. Note that this controls anti-aliasing only |
| * for all <em>text drawing</em> operations. |
| * |
| * @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> |
| * </ul> |
| * |
| * @see #setAntialias |
| * |
| * @since 3.1 |
| */ |
| public void setTextAntialias(int antialias) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.cairo == 0 && antialias == SWT.DEFAULT) return; |
| int mode = 0; |
| switch (antialias) { |
| case SWT.DEFAULT: mode = Cairo.CAIRO_ANTIALIAS_DEFAULT; break; |
| case SWT.OFF: mode = Cairo.CAIRO_ANTIALIAS_NONE; break; |
| case SWT.ON: mode = Cairo.CAIRO_ANTIALIAS_GRAY; |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| initCairo(); |
| int /*long*/ options = Cairo.cairo_font_options_create(); |
| Cairo.cairo_font_options_set_antialias(options, mode); |
| Cairo.cairo_set_font_options(data.cairo, options); |
| Cairo.cairo_font_options_destroy(options); |
| } |
| /** |
| * Sets the transform that is currently being used by the receiver. If |
| * the argument is <code>null</code>, the current transform is set to |
| * the identity transform. |
| * |
| * @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> |
| * </ul> |
| * |
| * @see Transform |
| * |
| * @since 3.1 |
| */ |
| public void setTransform(Transform transform) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (transform != null && transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (data.cairo == 0 && transform == null) return; |
| initCairo(); |
| int /*long*/ cairo = data.cairo; |
| if (transform != null) { |
| Cairo.cairo_set_matrix(cairo, transform.handle); |
| } else { |
| Cairo.cairo_identity_matrix(cairo); |
| } |
| //TODO - round off problems |
| int /*long*/ clipRgn = data.clipRgn; |
| if (clipRgn != 0) { |
| double[] matrix = new double[]{1, 0, 0, 1, 0, 0}; |
| Cairo.cairo_get_matrix(cairo, matrix); |
| Cairo.cairo_matrix_invert(matrix); |
| int /*long*/ newRgn = OS.XCreateRegion(); |
| //TODO - get rectangles from region instead of clip box |
| XRectangle rect = new XRectangle(); |
| OS.XClipBox(clipRgn, rect); |
| short[] pointArray = new short[8]; |
| double[] x = new double[1], y = new double[1]; |
| x[0] = rect.x; |
| y[0] = rect.y; |
| Cairo.cairo_matrix_transform_point(matrix, x, y); |
| pointArray[0] = (short)Math.round(x[0]); |
| pointArray[1] = (short)Math.round(y[0]); |
| x[0] = rect.x + rect.width; |
| y[0] = rect.y; |
| Cairo.cairo_matrix_transform_point(matrix, x, y); |
| pointArray[2] = (short)Math.round(x[0]); |
| pointArray[3] = (short)Math.round(y[0]); |
| x[0] = rect.x + rect.width; |
| y[0] = rect.y + rect.height; |
| Cairo.cairo_matrix_transform_point(matrix, x, y); |
| pointArray[4] = (short)Math.round(x[0]); |
| pointArray[5] = (short)Math.round(y[0]); |
| x[0] = rect.x; |
| y[0] = rect.y + rect.height; |
| Cairo.cairo_matrix_transform_point(matrix, x, y); |
| pointArray[6] = (short)Math.round(x[0]); |
| pointArray[7] = (short)Math.round(y[0]); |
| int /*long*/ polyRgn = OS.XPolygonRegion(pointArray, pointArray.length / 2, OS.EvenOddRule); |
| OS.XUnionRegion(handle, polyRgn, handle); |
| OS.XDestroyRegion(polyRgn); |
| OS.XDestroyRegion(clipRgn); |
| data.clipRgn = newRgn; |
| } |
| } |
| /** |
| * If the argument is <code>true</code>, puts the receiver |
| * in a drawing mode where the resulting color in the destination |
| * is the <em>exclusive or</em> of the color values in the source |
| * and the destination, and if the argument is <code>false</code>, |
| * puts the receiver in a drawing mode where the destination color |
| * is replaced with the source color value. |
| * <p> |
| * Note that this mode in fundamentally unsupportable on certain |
| * platforms, notably Carbon (Mac OS X). Clients that want their |
| * code to run on all platforms need to avoid this method. |
| * </p> |
| * |
| * @param xor if <code>true</code>, then <em>xor</em> mode is used, otherwise <em>source copy</em> mode is used |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @deprecated this functionality is not supported on some platforms |
| */ |
| public void setXORMode(boolean xor) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| OS.XSetFunction(data.display, handle, xor ? OS.GXxor : OS.GXcopy); |
| } |
| /** |
| * 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) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| setString(string); |
| if (data.stringWidth != -1) return new Point(data.stringWidth, data.stringHeight); |
| int width, height; |
| if (string.length() == 0) { |
| width = 0; |
| height = getFontHeight(); |
| } else { |
| int fontList = data.font.handle; |
| int xmString = data.xmString; |
| width = OS.XmStringWidth(fontList, xmString); |
| height = OS.XmStringHeight(fontList, xmString); |
| } |
| return new Point(data.stringWidth = width, data.stringHeight = height); |
| } |
| /** |
| * 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 specifing 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 == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| setText(string, flags); |
| if (data.textWidth != -1) return new Point(data.textWidth, data.textHeight); |
| int width, height; |
| if (string.length() == 0) { |
| width = 0; |
| height = getFontHeight(); |
| } else { |
| int fontList = data.font.handle; |
| int xmText = data.xmText; |
| width = OS.XmStringWidth(fontList, xmText); |
| height = OS.XmStringHeight(fontList, xmText); |
| } |
| return new Point(data.textWidth = width, data.textHeight = height); |
| } |
| /** |
| * Returns a string containing a concise, human-readable |
| * description of the receiver. |
| * |
| * @return a string representation of the receiver |
| */ |
| public String toString () { |
| if (isDisposed()) return "GC {*DISPOSED*}"; |
| return "GC {" + handle + "}"; |
| } |
| } |
