| /******************************************************************************* |
| * Copyright (c) 2000, 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.graphics; |
| |
| |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.photon.*; |
| 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; |
| |
| int dirtyBits; |
| |
| static final int DefaultBack = 0xffffff; |
| static final int DefaultFore = 0x000000; |
| static final byte[][] DashList = { |
| { }, // SWT.LINE_SOLID |
| { 18, 6 }, // SWT.LINE_DASH |
| { 3, 3 }, // SWT.LINE_DOT |
| { 9, 6, 3, 6 }, // SWT.LINE_DASHDOT |
| { 9, 3, 3, 3, 3, 3 } // SWT.LINE_DASHDOTDOT |
| }; |
| // Photon Draw Buffer Size for off screen drawing. |
| static int DrawBufferSize = 48 * 1024; |
| |
| static final int DIRTY_BACKGROUND = 1 << 0; |
| static final int DIRTY_FOREGROUND = 1 << 1; |
| static final int DIRTY_CLIPPING = 1 << 2; |
| static final int DIRTY_FONT = 1 << 3; |
| static final int DIRTY_LINESTYLE = 1 << 4; |
| static final int DIRTY_LINEWIDTH = 1 << 5; |
| static final int DIRTY_LINECAP = 1 << 6; |
| static final int DIRTY_LINEJOIN = 1 << 7; |
| static final int DIRTY_XORMODE = 1 << 8; |
| |
| GC() { |
| } |
| |
| /** |
| * Constructs a new instance of this class which has been |
| * configured to draw on the specified drawable. Sets the |
| * foreground color, background color and font in the GC |
| * to match those in the drawable. |
| * <p> |
| * You must dispose the graphics context when it is no longer required. |
| * </p> |
| * @param drawable the drawable to draw on |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the drawable is null</li> |
| * <li>ERROR_NULL_ARGUMENT - if there is no current device</li> |
| * <li>ERROR_INVALID_ARGUMENT |
| * - if the drawable is an image that is not a bitmap or an icon |
| * - if the drawable is an image or printer that is already selected |
| * into another graphics context</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_NO_HANDLES if a handle could not be obtained for GC creation</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li> |
| * </ul> |
| */ |
| public GC(Drawable drawable) { |
| this(drawable, 0); |
| } |
| |
| /** |
| * Constructs a new instance of this class which has been |
| * configured to draw on the specified drawable. Sets the |
| * foreground color, background color and font in the GC |
| * to match those in the drawable. |
| * <p> |
| * You must dispose the graphics context when it is no longer required. |
| * </p> |
| * |
| * @param drawable the drawable to draw on |
| * @param style the style of GC to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the drawable is null</li> |
| * <li>ERROR_NULL_ARGUMENT - if there is no current device</li> |
| * <li>ERROR_INVALID_ARGUMENT |
| * - if the drawable is an image that is not a bitmap or an icon |
| * - if the drawable is an image or printer that is already selected |
| * into another graphics context</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_NO_HANDLES if a handle could not be obtained for GC creation</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li> |
| * </ul> |
| * |
| * @since 2.1.2 |
| */ |
| public GC(Drawable drawable, int style) { |
| int flags = OS.PtEnter(0); |
| try { |
| if (drawable == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| GCData data = new GCData (); |
| data.style = checkStyle(style); |
| int hDC = 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, hDC); |
| if (device.tracking) device.new_Object(this); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| 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 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); |
| int flags = OS.PtEnter(0); |
| try { |
| Rectangle bounds = image.getBounds(); |
| int memImage = 0; |
| PhRect_t rect = new PhRect_t(); |
| rect.ul_x = (short)x; rect.ul_y = (short)y; |
| rect.lr_x = (short)(x + bounds.width - 1); rect.lr_y = (short)(y + bounds.height - 1); |
| boolean sharedMem = true; |
| int rid = data.rid; |
| int widget = data.widget; |
| if (rid == OS.Ph_DEV_RID) { |
| memImage = OS.PgShmemCreate(OS.PgReadScreenSize(rect), null); |
| if (memImage != 0) memImage = OS.PgReadScreen(rect, memImage); |
| } else if (widget != 0) { |
| short [] widget_x = new short [1], widget_y = new short [1]; |
| OS.PtGetAbsPosition(widget, widget_x, widget_y); |
| rect.ul_x += widget_x[0]; |
| rect.ul_y += widget_y[0]; |
| rect.lr_x += widget_y[0]; |
| rect.lr_y += widget_y[0]; |
| memImage = OS.PgShmemCreate(OS.PgReadScreenSize(rect), null); |
| if (memImage != 0) memImage = OS.PgReadScreen(rect, memImage); |
| } else if (data.image != null) { |
| memImage = OS.PiCropImage(data.image.handle, rect, 0); |
| sharedMem = false; |
| } |
| if (memImage == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| PhImage_t phImage = new PhImage_t(); |
| OS.memmove(phImage, memImage, PhImage_t.sizeof); |
| PhPoint_t trans = new PhPoint_t(); |
| PhPoint_t pos = new PhPoint_t(); |
| PhDim_t scale = new PhDim_t(); |
| scale.w = (short)bounds.width; |
| scale.h = (short)bounds.height; |
| int mc = OS.PmMemCreateMC(image.handle, scale, trans); |
| int prevContext = OS.PmMemStart(mc); |
| OS.PgSetDrawBufferSize(DrawBufferSize); |
| if (phImage.palette != 0) OS.PgSetPalette(phImage.palette, 0, (short)0, (short)phImage.colors, OS.Pg_PALSET_SOFT, 0); |
| OS.PgDrawImage(phImage.image, phImage.type, pos, scale, phImage.bpl, 0); |
| if (phImage.palette != 0) OS.PgSetPalette(0, 0, (short)0, (short)-1, 0, 0); |
| OS.PmMemFlush(mc, image.handle); |
| OS.PmMemStop(mc); |
| OS.PmMemReleaseMC(mc); |
| OS.PhDCSetCurrent(prevContext); |
| if (sharedMem) { |
| OS.PgShmemDestroy(memImage); |
| } else { |
| phImage.flags = (byte)OS.Ph_RELEASE_IMAGE_ALL; |
| OS.memmove(memImage, phImage, PhImage_t.sizeof); |
| OS.PhReleaseImage(memImage); |
| OS.free(memImage); |
| } |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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 flags = OS.PtEnter(0); |
| try { |
| boolean overlaps = (destX < x + width) && (destY < y + height) && |
| (destX + width > x) && (destY + height > y); |
| int widget = data.widget; |
| Image image = data.image; |
| if (image != null) { |
| int drawImage = image.handle; |
| PhImage_t phDrawImage = new PhImage_t(); |
| OS.memmove(phDrawImage, drawImage, PhImage_t.sizeof); |
| if (overlaps) { |
| PhPoint_t trans = new PhPoint_t(); |
| PhDim_t scale = new PhDim_t(); |
| scale.w = (short)width; |
| scale.h = (short)height; |
| PhPoint_t pos = new PhPoint_t(); |
| pos.x = (short)-x; |
| pos.y = (short)-y; |
| PhDim_t dim = new PhDim_t(); |
| dim.w = (short)Math.min(phDrawImage.size_w, x + width); |
| dim.h = (short)Math.min(phDrawImage.size_h, y + height); |
| /* Feature on Photon - It is only possible to draw on images of |
| type Pg_IMAGE_PALETTE_BYTE and Pg_IMAGE_DIRECT_888. |
| */ |
| int type = OS.Pg_IMAGE_PALETTE_BYTE; |
| if ((phDrawImage.type & OS.Pg_IMAGE_CLASS_MASK) == OS.Pg_IMAGE_CLASS_DIRECT) { |
| type = OS.Pg_IMAGE_DIRECT_888; |
| } |
| int memImage = OS.PhCreateImage(null, (short)width, (short)height, type, phDrawImage.palette, phDrawImage.colors, 0); |
| int mc = OS.PmMemCreateMC(memImage, scale, trans); |
| int prevContext = OS.PmMemStart(mc); |
| OS.PgSetDrawBufferSize(DrawBufferSize); |
| if (phDrawImage.palette != 0) OS.PgSetPalette(phDrawImage.palette, 0, (short)0, (short)phDrawImage.colors, OS.Pg_PALSET_SOFT, 0); |
| OS.PgDrawImage(phDrawImage.image, phDrawImage.type, pos, dim, phDrawImage.bpl, 0); |
| if (phDrawImage.palette != 0) OS.PgSetPalette(0, 0, (short)0, (short)-1, 0, 0); |
| OS.PmMemFlush(mc, memImage); |
| OS.PmMemStop(mc); |
| OS.PmMemReleaseMC(mc); |
| OS.PhDCSetCurrent(prevContext); |
| x = (short)0; |
| y = (short)0; |
| drawImage = memImage; |
| OS.memmove(phDrawImage, drawImage, PhImage_t.sizeof); |
| phDrawImage.flags = (byte)OS.Ph_RELEASE_IMAGE_ALL; |
| OS.memmove(drawImage, phDrawImage, PhImage_t.sizeof); |
| } |
| PhPoint_t pos = new PhPoint_t(); |
| pos.x = (short)(destX - x); |
| pos.y = (short)(destY - y); |
| PhRect_t clip = new PhRect_t(); |
| clip.ul_x = (short)destX; |
| clip.ul_y = (short)destY; |
| clip.lr_x = (short)(destX + width - 1); |
| clip.lr_y = (short)(destY + height - 1); |
| PhDim_t dim = new PhDim_t(); |
| dim.w = (short)Math.min(phDrawImage.size_w, x + width); |
| dim.h = (short)Math.min(phDrawImage.size_h, y + height); |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgSetUserClip(clip); |
| if (phDrawImage.palette != 0) OS.PgSetPalette(phDrawImage.palette, 0, (short)0, (short)phDrawImage.colors, OS.Pg_PALSET_SOFT, 0); |
| OS.PgDrawImage(phDrawImage.image, phDrawImage.type, pos, dim, phDrawImage.bpl, 0); |
| if (phDrawImage.palette != 0) OS.PgSetPalette(0, 0, (short)0, (short)-1, 0, 0); |
| OS.PgSetUserClip(null); |
| unsetGC(prevContext); |
| if (drawImage != image.handle) { |
| OS.PhReleaseImage(drawImage); |
| OS.free(drawImage); |
| } |
| } else if (widget != 0) { |
| PhRect_t rect = new PhRect_t(); |
| rect.ul_x = (short)x; |
| rect.ul_y = (short)y; |
| rect.lr_x = (short)(x + width - 1); |
| rect.lr_y = (short)(y + height - 1); |
| PhPoint_t delta = new PhPoint_t(); |
| delta.x = (short)deltaX; |
| delta.y = (short)deltaY; |
| int visibleTiles = getClipping(widget, data.topWidget, true, true, null); |
| if ( visibleTiles == 0 ) |
| OS.PtBlit(widget, rect, delta); |
| else { |
| int srcTile = OS.PhGetTile(); |
| OS.memmove(srcTile, rect, PhRect_t.sizeof); |
| OS.PtClippedBlit(widget, srcTile, delta, visibleTiles); |
| OS.PhFreeTiles(srcTile);; |
| OS.PhFreeTiles(visibleTiles); |
| } |
| } |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * Disposes of the operating system resources associated with |
| * the graphics context. Applications must dispose of all GCs |
| * which they allocate. |
| * |
| * @exception SWTError <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li> |
| * </ul> |
| */ |
| public void dispose() { |
| int flags = OS.PtEnter(0); |
| try { |
| if (handle == 0) return; |
| if (data.device.isDisposed()) return; |
| |
| int clipRects = data.clipRects; |
| if (clipRects != 0) { |
| OS.free(clipRects); |
| data.clipRects = data.clipRectsCount = 0; |
| } |
| Image image = data.image; |
| if (image != null) { |
| flushImage(); |
| /* Regenerate the mask if necessary */ |
| if (image.transparentPixel != -1) { |
| PhImage_t phImage = new PhImage_t (); |
| OS.memmove(phImage, image.handle, PhImage_t.sizeof); |
| if (phImage.mask_bm == 0) { |
| createMask(image.handle, phImage.type, image.transparentPixel); |
| } |
| } |
| image.memGC = null; |
| } |
| |
| /* |
| * Dispose the HDC. |
| */ |
| Device device = data.device; |
| drawable.internal_dispose_GC(handle, data); |
| drawable = null; |
| handle = 0; |
| data.image = null; |
| data.font = null; |
| data.rid = data.widget = data.topWidget = 0; |
| if (device.tracking) device.dispose_Object(this); |
| data.device = null; |
| data = null; |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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; |
| if (startAngle > 0) { |
| if (arcAngle > 0) { |
| //No need to modify start angle. |
| arcAngle += startAngle; |
| } else { |
| int newStartAngle; |
| int newStopAngle = startAngle; |
| if (startAngle > Math.abs(arcAngle)) { |
| newStartAngle = startAngle - Math.abs(arcAngle); |
| } else { |
| newStartAngle = startAngle + 360 - Math.abs(arcAngle); |
| } |
| startAngle = newStartAngle; |
| arcAngle = newStopAngle; |
| } |
| } else { |
| if (arcAngle > 0) { |
| arcAngle = arcAngle + startAngle; |
| startAngle = 360 - Math.abs(startAngle); |
| } else { |
| int newStopAngle = 360 + startAngle; |
| startAngle = newStopAngle - Math.abs(arcAngle); |
| arcAngle = newStopAngle; |
| } |
| } |
| startAngle = (int) (startAngle * 65536 / 360); |
| arcAngle = (int) (arcAngle * 65536 / 360); |
| |
| PhPoint_t center = new PhPoint_t(); |
| center.x = (short)(x + (width / 2)); |
| center.y = (short)(y + (height / 2)); |
| PhPoint_t radii = new PhPoint_t(); |
| radii.x = (short)(width / 2); |
| radii.y = (short)(height / 2); |
| |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawArc(center, radii, startAngle, arcAngle, OS.Pg_ARC | OS.Pg_DRAW_STROKE); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| if (width < 0) width -= width; |
| if (height < 0) height -= height; |
| OS.PgSetStrokeColor(0x9098F8); |
| OS.PgDrawIRect(x, y, x + width - 1, y + height - 1, OS.Pg_DRAW_STROKE); |
| OS.PgSetStrokeColor(data.foreground); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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 image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) { |
| int flags = OS.PtEnter(0); |
| try { |
| if (image.memGC != null) image.memGC.flushImage(); |
| int drawImage = image.handle; |
| PhImage_t phDrawImage = new PhImage_t(); |
| OS.memmove(phDrawImage, drawImage, PhImage_t.sizeof); |
| int imgWidth = phDrawImage.size_w; |
| int imgHeight = phDrawImage.size_h; |
| 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); |
| } |
| } |
| if (srcWidth != destWidth || srcHeight != destHeight) { |
| drawImage = scaleImage(image, phDrawImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight); |
| if (drawImage == 0) return; |
| srcX = (short)0; |
| srcY = (short)0; |
| srcWidth = (short)destWidth; |
| srcHeight = (short)destHeight; |
| OS.memmove(phDrawImage, drawImage, PhImage_t.sizeof); |
| } |
| PhPoint_t pos = new PhPoint_t(); |
| pos.x = (short)(destX - srcX); |
| pos.y = (short)(destY - srcY); |
| PhDim_t dim = new PhDim_t(); |
| dim.w = (short)Math.min(phDrawImage.size_w, srcX + srcWidth); |
| dim.h = (short)Math.min(phDrawImage.size_h, srcY + srcHeight); |
| PhRect_t clip = new PhRect_t(); |
| clip.ul_x = (short)destX; |
| clip.ul_y = (short)destY; |
| clip.lr_x = (short)(destX + destWidth - 1); |
| clip.lr_y = (short)(destY + destHeight - 1); |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgSetDrawMode(data.xorMode ? OS.Pg_DrawModeDSx : OS.Pg_DrawModeS); |
| dirtyBits |= DIRTY_XORMODE; |
| OS.PgSetUserClip(clip); |
| if (phDrawImage.palette != 0) OS.PgSetPalette(phDrawImage.palette, 0, (short)0, (short)phDrawImage.colors, OS.Pg_PALSET_SOFT, 0); |
| if (phDrawImage.alpha != 0) { |
| drawImageAlpha(image, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, phDrawImage, drawImage, pos, dim); |
| } else if (image.transparentPixel != -1) { |
| drawImageTransparent(image, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, phDrawImage, drawImage, pos, dim); |
| } else if (phDrawImage.mask_bm != 0) { |
| drawImageMask(image, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, phDrawImage, drawImage, pos, dim); |
| } else { |
| drawImage(image, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, phDrawImage, drawImage, pos, dim); |
| } |
| if (phDrawImage.palette != 0) OS.PgSetPalette(0, 0, (short)0, (short)-1, 0, 0); |
| OS.PgSetUserClip(null); |
| unsetGC(prevContext); |
| if (drawImage != image.handle) { |
| phDrawImage.flags = (byte)OS.Ph_RELEASE_IMAGE_ALL; |
| OS.memmove(drawImage, phDrawImage, PhImage_t.sizeof); |
| OS.PhReleaseImage(drawImage); |
| OS.free(drawImage); |
| } |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| void drawImageAlpha(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, PhImage_t phImage, int imgHandle, PhPoint_t pos, PhDim_t dim) { |
| PgAlpha_t phAlpha = new PgAlpha_t(); |
| OS.memmove(phAlpha, phImage.alpha, PgAlpha_t.sizeof); |
| if ((phAlpha.alpha_op & OS.Pg_ALPHA_OP_SRC_GLOBAL) != 0) { |
| OS.PgSetAlpha(phAlpha.alpha_op, null, 0, phAlpha.src_global_alpha, phAlpha.dest_global_alpha); |
| OS.PgAlphaOn(); |
| OS.PgDrawImage(phImage.image, phImage.type, pos, dim, phImage.bpl, 0); |
| OS.PgAlphaOff(); |
| return; |
| } |
| |
| /* |
| * Feature/Bug in Photon - When drawing images with alpha blending |
| * enabled, there is a limitation in the size of the alpha map. |
| * This limitation is probably related to the draw buffer size and |
| * it seems to be worse when drawing to a memory context. The |
| * fix/workaround is to draw the image line by line. |
| */ |
| PgMap_t imageMap = new PgMap_t(); |
| OS.memmove(imageMap, phImage.alpha + 4, PgMap_t.sizeof); |
| PgMap_t lineMap = new PgMap_t(); |
| lineMap.dim_w = imageMap.dim_w; |
| lineMap.dim_h = 1; |
| /* |
| * Feature in Photon - The alpha map set in a graphics context by |
| * PgSetAlpha is freed when the graphics context is destroyed. |
| */ |
| lineMap.map = OS.malloc(lineMap.dim_w); |
| OS.PgSetAlpha(phAlpha.alpha_op, lineMap, 0, phAlpha.src_global_alpha, phAlpha.dest_global_alpha); |
| OS.PgAlphaOn(); |
| pos.y = (short)(destY); |
| int end = dim.h; |
| dim.h = (short)1; |
| for (int y=srcY; y<end; y+=lineMap.dim_h) { |
| OS.memmove(lineMap.map, imageMap.map + (imageMap.dim_w * y), lineMap.dim_w); |
| /* |
| * Bug in Photon - When drawing an image to a memory context created by |
| * PmMemCreateMC at a negative position, the alpha map is not offset. |
| */ |
| if (data.image != null && pos.x < 0) { |
| OS.memmove(lineMap.map, lineMap.map - pos.x, lineMap.dim_w + pos.x); |
| } |
| OS.PgDrawImage(phImage.image + (phImage.bpl * y), phImage.type, pos, dim, phImage.bpl, 0); |
| /* |
| * Flushing is necessary in order to change the alpha map. |
| */ |
| if (data.image != null) OS.PmMemFlush(handle, data.image.handle); |
| else OS.PgFlush(); |
| pos.y += lineMap.dim_h; |
| } |
| OS.PgAlphaOff(); |
| } |
| void drawImageTransparent(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, PhImage_t phImage, int imgHandle, PhPoint_t pos, PhDim_t dim) { |
| /* Generate the mask if necessary */ |
| if (phImage.mask_bm == 0) { |
| createMask(imgHandle, phImage.type, image.transparentPixel); |
| OS.memmove(phImage, imgHandle, PhImage_t.sizeof); |
| } |
| OS.PgDrawTImage(phImage.image, phImage.type, pos, dim, phImage.bpl, 0, phImage.mask_bm, phImage.mask_bpl); |
| /* Destroy the mask if there is a GC created on the image */ |
| if (image.memGC != null && image.handle == imgHandle) { |
| OS.free(phImage.mask_bm); |
| phImage.mask_bm = 0; |
| phImage.mask_bpl = 0; |
| OS.memmove(imgHandle, phImage, PhImage_t.sizeof); |
| } |
| } |
| void drawImageMask(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, PhImage_t phImage, int imgHandle, PhPoint_t pos, PhDim_t dim) { |
| OS.PgDrawTImage(phImage.image, phImage.type, pos, dim, phImage.bpl, 0, phImage.mask_bm, phImage.mask_bpl); |
| } |
| void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, PhImage_t phImage, int imgHandle, PhPoint_t pos, PhDim_t dim) { |
| OS.PgDrawImage(phImage.image, phImage.type, pos, dim, phImage.bpl, 0); |
| } |
| static void createMask(int image, int type, int transparent) { |
| if ((type & OS.Pg_IMAGE_CLASS_MASK) == OS.Pg_IMAGE_CLASS_PALETTE) { |
| transparent = (transparent & 0xFF) | OS.Pg_INDEX_COLOR; |
| } else { |
| switch (type) { |
| case OS.Pg_IMAGE_DIRECT_888: |
| transparent = ((transparent & 0xFF) << 16) | (transparent & 0xFF00) | ((transparent & 0xFF0000) >> 16); |
| break; |
| case OS.Pg_IMAGE_DIRECT_8888: |
| transparent = ((transparent & 0xFF00) << 8) | ((transparent & 0xFF0000) >> 8) | ((transparent & 0xFF000000) >> 24); |
| break; |
| case OS.Pg_IMAGE_DIRECT_565: |
| transparent = ((transparent & 0xF800) << 8) | ((transparent & 0x7E0) << 5) | ((transparent & 0x1F) << 3); |
| break; |
| case OS.Pg_IMAGE_DIRECT_555: |
| transparent = ((transparent & 0x7C00) << 9) | ((transparent & 0x3E0) << 6) | ((transparent & 0x1F) << 3); |
| break; |
| case OS.Pg_IMAGE_DIRECT_444: |
| transparent = ((transparent & 0xF00) << 12) | ((transparent & 0xF0) << 8) | ((transparent & 0xF) << 4); |
| break; |
| } |
| } |
| OS.PhMakeTransBitmap(image, transparent); |
| } |
| static int scaleImage(Image image, PhImage_t phImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight) { |
| PhPoint_t trans = new PhPoint_t(); |
| PhDim_t scale = new PhDim_t(); |
| scale.w = (short)srcWidth; |
| scale.h = (short)srcHeight; |
| PhPoint_t pos = new PhPoint_t(); |
| pos.x = (short)-srcX; |
| pos.y = (short)-srcY; |
| PhDim_t dim = new PhDim_t(); |
| dim.w = (short)Math.min(phImage.size_w, srcX + srcWidth); |
| dim.h = (short)Math.min(phImage.size_h, srcY + srcHeight); |
| /* |
| * Feature on Photon - It is only possible to draw on images of |
| * type Pg_IMAGE_PALETTE_BYTE and Pg_IMAGE_DIRECT_888. |
| */ |
| int type = OS.Pg_IMAGE_PALETTE_BYTE; |
| if ((phImage.type & OS.Pg_IMAGE_CLASS_MASK) == OS.Pg_IMAGE_CLASS_DIRECT) { |
| type = OS.Pg_IMAGE_DIRECT_888; |
| } |
| /* Scale the image */ |
| int memImage = OS.PhCreateImage(null, (short)destWidth, (short)destHeight, type, phImage.palette, phImage.colors, 0); |
| if (memImage == 0) return 0; |
| int mc = OS.PmMemCreateMC(memImage, scale, trans); |
| if (mc == 0) { |
| Image.destroyImage(memImage); |
| return 0; |
| } |
| int prevContext = OS.PmMemStart(mc); |
| OS.PgSetDrawBufferSize(DrawBufferSize); |
| if (phImage.palette != 0) OS.PgSetPalette(phImage.palette, 0, (short)0, (short)phImage.colors, OS.Pg_PALSET_SOFT, 0); |
| OS.PgDrawImage(phImage.image, phImage.type, pos, dim, phImage.bpl, 0); |
| if (phImage.palette != 0) OS.PgSetPalette(0, 0, (short)0, (short)-1, 0, 0); |
| OS.PmMemFlush(mc, memImage); |
| OS.PmMemStop(mc); |
| OS.PmMemReleaseMC(mc); |
| OS.PhDCSetCurrent(prevContext); |
| |
| PhImage_t phMemImage = new PhImage_t(); |
| OS.memmove(phMemImage, memImage, PhImage_t.sizeof); |
| if (image.transparentPixel != -1) { |
| /* Generate the mask if it was created originally */ |
| if (phImage.mask_bm != 0) { |
| createMask(memImage, phImage.type, image.transparentPixel); |
| } |
| } else if (phImage.mask_bm != 0) { |
| /* Scale the mask */ |
| int[] palette = new int[2]; |
| palette[0] = 0x000000; |
| palette[1] = 0xffffff; |
| int palettePtr = OS.malloc(palette.length * 4); |
| OS.memmove(palettePtr, palette, palette.length * 4); |
| /* |
| * Feature on Photon - It is only possible to draw on images of |
| * type Pg_IMAGE_PALETTE_BYTE and Pg_IMAGE_DIRECT_888. |
| */ |
| int maskImage = OS.PhCreateImage(null, (short)destWidth, (short)destHeight, OS.Pg_IMAGE_PALETTE_BYTE, palettePtr, palette.length, 0); |
| if (maskImage == 0) { |
| Image.destroyImage(memImage); |
| return 0; |
| } |
| mc = OS.PmMemCreateMC(maskImage, scale, trans); |
| if (mc == 0) { |
| Image.destroyImage(maskImage); |
| Image.destroyImage(memImage); |
| return 0; |
| } |
| prevContext = OS.PmMemStart(mc); |
| OS.PgSetDrawBufferSize(DrawBufferSize); |
| OS.PgSetFillColor(palette[0]); |
| OS.PgSetTextColor(palette[1]); |
| OS.PgDrawBitmap(phImage.mask_bm, OS.Pg_BACK_FILL, pos, dim, phImage.mask_bpl, 0); |
| OS.PmMemFlush(mc, maskImage); |
| OS.PmMemStop(mc); |
| OS.PmMemReleaseMC(mc); |
| OS.PhDCSetCurrent(prevContext); |
| OS.free(palettePtr); |
| |
| /* Transfer the mask to the scaled image */ |
| OS.PhMakeTransBitmap(maskImage, 0 | OS.Pg_INDEX_COLOR); |
| PhImage_t phMaskImage = new PhImage_t(); |
| OS.memmove(phMaskImage, maskImage, PhImage_t.sizeof); |
| phMemImage.mask_bm = phMaskImage.mask_bm; |
| phMemImage.mask_bpl = phMaskImage.mask_bpl; |
| OS.memmove(memImage, phMemImage, PhImage_t.sizeof); |
| |
| /* Release the temporary image but not the mask data */ |
| phMaskImage.mask_bm = 0; |
| phMaskImage.mask_bpl = 0; |
| phMaskImage.flags = (byte)OS.Ph_RELEASE_IMAGE_ALL; |
| OS.memmove(maskImage, phMaskImage, PhImage_t.sizeof); |
| OS.PhReleaseImage(maskImage); |
| OS.free(maskImage); |
| } else if (phImage.alpha != 0) { |
| PgAlpha_t alpha = new PgAlpha_t(); |
| OS.memmove(alpha, phImage.alpha, PgAlpha_t.sizeof); |
| int alphaPtr = OS.malloc(PgAlpha_t.sizeof); |
| if (alphaPtr == 0) { |
| Image.destroyImage(memImage); |
| return 0; |
| } |
| |
| /* Scale alpha data */ |
| if (alpha.src_alpha_map_map != 0) { |
| int[] palette = new int[256]; |
| for (int i = 0; i < palette.length; i++) { |
| palette[i] = i; |
| } |
| int palettePtr = OS.malloc(palette.length * 4); |
| OS.memmove(palettePtr, palette, palette.length * 4); |
| /* |
| * Feature on Photon - It is only possible to draw on images of |
| * type Pg_IMAGE_PALETTE_BYTE and Pg_IMAGE_DIRECT_888. |
| */ |
| int alphaImage = OS.PhCreateImage(null, (short)destWidth, (short)destHeight, OS.Pg_IMAGE_PALETTE_BYTE, palettePtr, palette.length, 0); |
| if (alphaImage == 0) { |
| OS.free(palettePtr); |
| OS.free(alphaPtr); |
| Image.destroyImage(memImage); |
| return 0; |
| } |
| mc = OS.PmMemCreateMC(alphaImage, scale, trans); |
| if (mc == 0) { |
| OS.free(palettePtr); |
| OS.free(alphaPtr); |
| Image.destroyImage(alphaImage); |
| Image.destroyImage(memImage); |
| return 0; |
| } |
| prevContext = OS.PmMemStart(mc); |
| OS.PgSetPalette(palettePtr, 0, (short)0, (short)palette.length, OS.Pg_PALSET_SOFT, 0); |
| OS.PgDrawImage(alpha.src_alpha_map_map, OS.Pg_IMAGE_PALETTE_BYTE, pos, dim, alpha.src_alpha_map_bpl, 0); |
| OS.PgSetPalette(0, 0, (short)0, (short)-1, 0, 0); |
| OS.PmMemFlush(mc, alphaImage); |
| OS.PmMemStop(mc); |
| OS.PmMemReleaseMC(mc); |
| OS.PhDCSetCurrent(prevContext); |
| OS.free(palettePtr); |
| |
| /* Transfer the image to the scaled image alpha data*/ |
| PhImage_t phAlphaImage = new PhImage_t(); |
| OS.memmove(phAlphaImage, alphaImage, PhImage_t.sizeof); |
| alpha.src_alpha_map_bpl = (short)phAlphaImage.bpl; |
| alpha.src_alpha_map_dim_w = (short)phAlphaImage.bpl; |
| alpha.src_alpha_map_dim_h = (short)phAlphaImage.size_h; |
| alpha.src_alpha_map_map = phAlphaImage.image; |
| |
| /* Release the temporary image but not the image data */ |
| phAlphaImage.image = 0; |
| phAlphaImage.bpl = 0; |
| phAlphaImage.flags = (byte)OS.Ph_RELEASE_IMAGE_ALL; |
| OS.memmove(alphaImage, phAlphaImage, PhImage_t.sizeof); |
| OS.PhReleaseImage(alphaImage); |
| OS.free(alphaImage); |
| } |
| |
| OS.memmove(alphaPtr, alpha, PgAlpha_t.sizeof); |
| phMemImage.alpha = alphaPtr; |
| OS.memmove(memImage, phMemImage, PhImage_t.sizeof); |
| } |
| return memImage; |
| } |
| |
| /** |
| * 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 flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawILine(x1, y1, x2, y2); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| PhPoint_t center = new PhPoint_t(); |
| center.x = (short)x; center.y = (short)y; |
| PhPoint_t radii = new PhPoint_t(); |
| // Don't subtract one, so that the bottom/right edges are drawn |
| radii.x = (short)(x + width); radii.y = (short)(y + height); |
| |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawEllipse(center, radii, OS.Pg_DRAW_STROKE | OS.Pg_EXTENT_BASED); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * Draws the path described by the parameter. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param path the path to draw |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see Path |
| * |
| * @since 3.1 |
| */ |
| public void drawPath(Path path) { |
| if (handle == 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); |
| } |
| |
| /** |
| * 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 flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawIPixel(x, y); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| |
| short[] points = new short[pointArray.length]; |
| for (int i = pointArray.length - 1; i >= 0; i--) { |
| points[i] = (short)pointArray[i]; |
| } |
| |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawPolygon(points, pointArray.length / 2, new PhPoint_t(), OS.Pg_DRAW_STROKE | OS.Pg_CLOSED); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| |
| short[] points = new short[pointArray.length]; |
| for (int i = pointArray.length - 1; i >= 0; i--) { |
| points[i] = (short)pointArray[i]; |
| } |
| |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawPolygon(points, pointArray.length / 2, new PhPoint_t(), OS.Pg_DRAW_STROKE); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| // Don't subtract one, so that the bottom/right edges are drawn |
| OS.PgDrawIRect(x, y, x + width, y + height, OS.Pg_DRAW_STROKE); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| PhRect_t rect = new PhRect_t(); |
| rect.ul_x = (short)x; rect.ul_y = (short)y; |
| // Don't subtract one, so that the bottom/right edges are drawn |
| rect.lr_x = (short)(x + width); rect.lr_y = (short)(y + height); |
| PhPoint_t radii = new PhPoint_t(); |
| radii.x = (short)(arcWidth / 2); radii.y = (short)(arcHeight / 2); |
| |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawRoundRect(rect, radii, OS.Pg_DRAW_STROKE); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| |
| int drawFlags = OS.Pg_TEXT_LEFT | OS.Pg_TEXT_TOP; |
| if (!isTransparent) drawFlags |= OS.Pg_BACK_FILL; |
| byte[] buffer = Converter.wcsToMbcs(null, string, false); |
| |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| PhPoint_t pos = new PhPoint_t(); |
| pos.x = (short)x; |
| pos.y = (short)y; |
| if (!data.xorMode) { |
| OS.PgDrawText(buffer, buffer.length, pos, drawFlags); |
| } else { |
| if (isTransparent) { |
| PhRect_t rect = new PhRect_t(); |
| OS.PfExtentText(rect, null, data.font, buffer, buffer.length); |
| short width = (short)(rect.lr_x - rect.ul_x + 1); |
| short height = (short)(rect.lr_y - rect.ul_y + 1); |
| int image = OS.PhCreateImage(null, width, height, OS.Pg_IMAGE_DIRECT_888, 0, 0, 0); |
| PhDim_t dim = new PhDim_t(); |
| dim.w = width; |
| dim.h = height; |
| PhPoint_t point = new PhPoint_t(); |
| int pmMC = OS.PmMemCreateMC(image, dim, point); |
| if (pmMC == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| int prevCont = OS.PmMemStart(pmMC); |
| OS.PgSetTextColor(data.foreground); |
| OS.PgSetFont(data.font); |
| pos.x = pos.y = (short)0; |
| OS.PgDrawText(buffer, buffer.length, pos, drawFlags); |
| OS.PmMemFlush(pmMC, image); |
| OS.PmMemStop(pmMC); |
| OS.PhDCSetCurrent(prevCont); |
| OS.PmMemReleaseMC(pmMC); |
| point.x = (short)x; |
| point.y = (short)y; |
| PhImage_t phImage = new PhImage_t(); |
| OS.memmove(phImage, image, PhImage_t.sizeof); |
| OS.PgSetDrawMode(OS.Pg_DrawModeDSx); |
| dirtyBits |= DIRTY_XORMODE; |
| OS.PgDrawImage(phImage.image, phImage.type, point, dim, phImage.bpl, 0); |
| phImage.flags = (byte)OS.Ph_RELEASE_IMAGE_ALL; |
| OS.memmove(image, phImage, PhImage_t.sizeof); |
| OS.PhReleaseImage(image); |
| OS.free(image); |
| } else { |
| OS.PgSetTextXORColor(data.foreground, data.background); |
| OS.PgSetDrawMode(OS.Pg_DrawModeS); |
| OS.PgDrawText(buffer, buffer.length, pos, drawFlags); |
| dirtyBits |= DIRTY_XORMODE | DIRTY_FOREGROUND; |
| } |
| } |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * Draws the given string, using the receiver's current font and |
| * foreground color. Tab expansion and carriage return processing |
| * are performed. The background of the rectangular area where |
| * the text is being drawn will be filled with the receiver's |
| * background color. |
| * |
| * @param string the string to be drawn |
| * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawText (String string, int x, int y) { |
| drawText(string, x, y, SWT.DRAW_DELIMITER | SWT.DRAW_TAB); |
| } |
| |
| /** |
| * Draws the given string, using the receiver's current font and |
| * foreground color. Tab expansion and carriage return processing |
| * are performed. If <code>isTransparent</code> is <code>true</code>, |
| * then the background of the rectangular area where the text is being |
| * drawn will not be modified, otherwise it will be filled with the |
| * receiver's background color. |
| * |
| * @param string the string to be drawn |
| * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param isTransparent if <code>true</code> the background will be transparent, otherwise it will be opaque |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawText (String string, int x, int y, boolean isTransparent) { |
| int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB; |
| if (isTransparent) flags |= SWT.DRAW_TRANSPARENT; |
| drawText(string, x, y, flags); |
| } |
| |
| /** |
| * Draws the given string, using the receiver's current font and |
| * foreground color. Tab expansion, line delimiter and mnemonic |
| * processing are performed according to the specified flags. If |
| * <code>flags</code> includes <code>DRAW_TRANSPARENT</code>, |
| * then the background of the rectangular area where the text is being |
| * drawn will not be modified, otherwise it will be filled with the |
| * receiver's background color. |
| * <p> |
| * The parameter <code>flags</code> may be a combination of: |
| * <dl> |
| * <dt><b>DRAW_DELIMITER</b></dt> |
| * <dd>draw multiple lines</dd> |
| * <dt><b>DRAW_TAB</b></dt> |
| * <dd>expand tabs</dd> |
| * <dt><b>DRAW_MNEMONIC</b></dt> |
| * <dd>underline the mnemonic character</dd> |
| * <dt><b>DRAW_TRANSPARENT</b></dt> |
| * <dd>transparent background</dd> |
| * </dl> |
| * </p> |
| * |
| * @param string the string to be drawn |
| * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param flags the flags specifying how to process the text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawText (String string, int x, int y, int flags) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if ((flags & ~SWT.DRAW_TRANSPARENT) == 0) { |
| drawString(string, x, y, (flags & SWT.DRAW_TRANSPARENT) != 0); |
| } else { |
| drawText(string, x, y, flags, true); |
| } |
| } |
| |
| Point drawText(String text, int x, int y, int flags, boolean draw) { |
| /* NOT DONE - inline code for performance */ |
| |
| int length = text.length(); |
| char[] buffer = new char[length]; |
| text.getChars(0, length, buffer, 0); |
| |
| /* NOT DONE - tabstops */ |
| int spaceWidth = stringExtent(" ").x; |
| int tabWidth = spaceWidth *8 + 1; |
| |
| boolean transparent = (flags & SWT.DRAW_TRANSPARENT) != 0; |
| int mnemonic = -1; |
| int start = 0, i = 0, j = 0; |
| int initialX = x, initialY = y; |
| int maxX = x, maxY = y; |
| while (i < length) { |
| char c = buffer[j] = buffer[i]; |
| switch (c) { |
| case '\t': { |
| if ((flags & SWT.DRAW_TAB) == 0) break; |
| String string = new String(buffer, start, j - start); |
| if (draw) drawString(string, x, y, transparent); |
| Point extent = stringExtent(string); |
| x += extent.x + tabWidth; |
| maxX = Math.max(x, maxX); |
| maxY = Math.max(y + extent.y, maxY); |
| start = j + 1; |
| break; |
| } |
| case '\n': { |
| if ((flags & SWT.DRAW_DELIMITER) == 0) break; |
| String string = new String(buffer, start, j - start); |
| if (draw) drawString(string, x, y, transparent); |
| Point extent = stringExtent(string); |
| maxX = Math.max(x + extent.x, maxX); |
| x = initialX; |
| y += extent.y; |
| maxY = Math.max(y, maxY); |
| start = j + 1; |
| break; |
| } |
| case '&': { |
| if ((flags & SWT.DRAW_MNEMONIC) == 0) break; |
| if (i + 1 == length) break; |
| if (buffer[i + 1] == '&') {i++; break;} |
| if (mnemonic == -1) { |
| mnemonic = i + 1; |
| String string = new String(buffer, start, j - start); |
| if (draw) drawString(string, x, y, transparent); |
| Point extent = stringExtent(string); |
| x += extent.x; |
| start = mnemonic; |
| string = new String(buffer, start, 1); |
| if (draw) drawString(string, x, y, transparent); |
| extent = stringExtent(string); |
| int underlineY = y + extent.y - 1; |
| if (draw) drawLine(x, underlineY, x + extent.x, underlineY); |
| x += extent.x; |
| maxX = Math.max(x, maxX); |
| maxY = Math.max(y + extent.y, maxY); |
| start = j + 1; |
| } |
| j--; |
| break; |
| } |
| } |
| j++; |
| i++; |
| } |
| if (start != j) { |
| String string = new String(buffer, start, j - start); |
| if (draw) drawString(string, x, y, transparent); |
| Point extent = stringExtent(string); |
| maxX = Math.max(x + extent.x, maxX); |
| maxY = Math.max(y + extent.y, maxY); |
| } |
| return new Point(maxX - initialX, maxY - initialY); |
| } |
| |
| /** |
| * 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) { |
| return (object == this) || ((object instanceof GC) && (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; |
| if (startAngle > 0) { |
| if (arcAngle > 0) { |
| //No need to modify start angle. |
| arcAngle += startAngle; |
| } else { |
| int newStartAngle; |
| int newStopAngle = startAngle; |
| if (startAngle > Math.abs(arcAngle)) { |
| newStartAngle = startAngle - Math.abs(arcAngle); |
| } else { |
| newStartAngle = startAngle + 360 - Math.abs(arcAngle); |
| } |
| startAngle = newStartAngle; |
| arcAngle = newStopAngle; |
| } |
| } else { |
| if (arcAngle > 0) { |
| arcAngle = arcAngle + startAngle; |
| startAngle = 360 - Math.abs(startAngle); |
| } else { |
| int newStopAngle = 360 + startAngle; |
| startAngle = newStopAngle - Math.abs(arcAngle); |
| arcAngle = newStopAngle; |
| } |
| } |
| startAngle = (int) (startAngle * 65536 / 360); |
| arcAngle = (int) (arcAngle * 65536 / 360); |
| |
| PhPoint_t center = new PhPoint_t(); |
| center.x = (short)(x + (width / 2)); |
| center.y = (short)(y + (height / 2)); |
| PhPoint_t radii = new PhPoint_t(); |
| radii.x = (short)(width / 2); |
| radii.y = (short)(height / 2); |
| |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawArc(center, radii, startAngle, arcAngle, OS.Pg_ARC_PIE | OS.Pg_DRAW_FILL); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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 fromColor = data.foreground; |
| int toColor = data.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 = toColor; |
| toColor = fromColor; |
| fromColor = t; |
| } |
| if (fromColor == toColor) { |
| fillRectangle(x, y, width, height); |
| return; |
| } |
| PhPoint_t upperLeft = new PhPoint_t(); |
| upperLeft.x = (short)x; |
| upperLeft.y = (short)y; |
| PhPoint_t lowerRight = new PhPoint_t(); |
| lowerRight.x = (short)(x + width - 1); |
| lowerRight.y = (short)(y + height - 1); |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawGradient(upperLeft, lowerRight, |
| vertical ? OS.Pg_GRAD_VERTICAL : OS.Pg_GRAD_HORIZONTAL, OS.Pg_GRAD_LINEAR, |
| vertical ? height : width, fromColor, toColor, 0, 0, 0, null); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| PhPoint_t center = new PhPoint_t(); |
| center.x = (short)x; center.y = (short)y; |
| PhPoint_t radii = new PhPoint_t(); |
| radii.x = (short)(x + width); |
| radii.y = (short)(y + height); |
| |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawEllipse(center, radii, OS.Pg_DRAW_FILL | OS.Pg_EXTENT_BASED); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * Fills the path described by the parameter. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param path the path to fill |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see Path |
| * |
| * @since 3.1 |
| */ |
| public void fillPath (Path path) { |
| if (handle == 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); |
| } |
| |
| /** |
| * 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); |
| |
| short[] points = new short[pointArray.length]; |
| for (int i = pointArray.length - 1; i >= 0; i--) { |
| points[i] = (short)pointArray[i]; |
| } |
| |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawPolygon(points, pointArray.length / 2, new PhPoint_t(), OS.Pg_DRAW_FILL | OS.Pg_CLOSED); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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 || height == 0) return; |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawIRect(x, y, x + width - 1, y + height - 1, OS.Pg_DRAW_FILL); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| PhRect_t rect = new PhRect_t(); |
| rect.ul_x = (short)x; rect.ul_y = (short)y; |
| rect.lr_x = (short)(x + width - 1); rect.lr_y = (short)(y + height - 1); |
| PhPoint_t radii = new PhPoint_t(); |
| radii.x = (short)(arcWidth / 2); radii.y = (short)(arcHeight / 2); |
| |
| int flags = OS.PtEnter(0); |
| try { |
| int prevContext = setGC(); |
| setGCTranslation(); |
| setGCClipping(); |
| OS.PgDrawRoundRect(rect, radii, OS.Pg_DRAW_FILL); |
| unsetGC(prevContext); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * Force outstanding drawing commands to be processed. |
| */ |
| void flushImage () { |
| Image image = data.image; |
| if (image == null) return; |
| int prevContext = OS.PmMemStart(handle); |
| OS.PmMemFlush(handle, image.handle); |
| OS.PmMemStop(handle); |
| OS.PhDCSetCurrent(prevContext); |
| } |
| |
| /** |
| * 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) { |
| return getCharWidth(ch); |
| } |
| |
| /** |
| * 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 false; |
| } |
| |
| /** |
| * 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 0xFF; |
| } |
| |
| /** |
| * 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); |
| 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); |
| return Color.photon_new(data.device, data.background); |
| } |
| |
| /** |
| * Returns the background pattern. The default value is |
| * <code>null</code>. |
| * |
| * @return the receiver's background pattern |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see Pattern |
| * |
| * @since 3.1 |
| */ |
| public Pattern getBackgroundPattern() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return null; |
| } |
| |
| /** |
| * 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); |
| String string = new String(new char[] {ch}); |
| Point point = stringExtent(string); |
| return point.x; |
| } |
| |
| /** |
| * Returns the bounding rectangle of the receiver's clipping |
| * region. If no clipping region is set, the return value |
| * will be a rectangle which covers the entire bounds of the |
| * object the receiver is drawing on. |
| * |
| * @return the bounding rectangle of the clipping region |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Rectangle getClipping() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int flags = OS.PtEnter(0); |
| try { |
| PhRect_t rect = new PhRect_t(); |
| int rid = data.rid; |
| int widget = data.widget; |
| Image image = data.image; |
| if (rid == OS.Ph_DEV_RID) { |
| OS.PhRegionQuery (rid, null, rect, 0, 0); |
| } else if (widget != 0) { |
| OS.PtWidgetCanvas(widget, rect); |
| } else if (image != null) { |
| PhImage_t img = new PhImage_t(); |
| OS.memmove(img, image.handle, PhImage_t.sizeof); |
| rect.lr_x = (short)(img.size_w - 1); |
| rect.lr_y = (short)(img.size_h - 1); |
| } |
| int clipRects = data.clipRects; |
| if (clipRects != 0) { |
| int clipRectsCount = data.clipRectsCount; |
| int clip_ptr = OS.malloc(PhRect_t.sizeof); |
| OS.memmove(clip_ptr, clipRects, PhRect_t.sizeof); |
| for (int i = 1; i < clipRectsCount; i++) { |
| OS.PhRectUnion (clip_ptr, clipRects + (i * PhRect_t.sizeof)); |
| } |
| int rect_ptr = OS.malloc(PhRect_t.sizeof); |
| OS.memmove(rect_ptr, rect, PhRect_t.sizeof); |
| boolean intersect = OS.PhRectIntersect(rect_ptr, clip_ptr) != 0; |
| OS.memmove(rect, rect_ptr, PhRect_t.sizeof); |
| OS.free(rect_ptr); |
| OS.free(clip_ptr); |
| if (!intersect) return new Rectangle(0, 0, 0, 0); |
| } |
| int width = rect.lr_x - rect.ul_x + 1; |
| int height = rect.lr_y - rect.ul_y + 1; |
| return new Rectangle(rect.ul_x, rect.ul_y, width, height); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| if (region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| int flags = OS.PtEnter(0); |
| try { |
| if (region.handle != 0 && region.handle != Region.EMPTY_REGION) { |
| OS.PhFreeTiles(region.handle); |
| } |
| int clipRects = data.clipRects; |
| if (clipRects != 0) { |
| region.handle = OS.PhRectsToTiles(clipRects, data.clipRectsCount); |
| } else { |
| region.handle = OS.PhGetTile(); |
| PhRect_t rect = new PhRect_t (); |
| int rid = data.rid; |
| int widget = data.widget; |
| Image image = data.image; |
| if (rid == OS.Ph_DEV_RID) { |
| OS.PhRegionQuery (rid, null, rect, 0, 0); |
| } else if (widget != 0) { |
| OS.PtWidgetCanvas(widget, rect); |
| } else if (image != null) { |
| PhImage_t img = new PhImage_t(); |
| OS.memmove(img, image.handle, PhImage_t.sizeof); |
| rect.lr_x = (short)(img.size_w - 1); |
| rect.lr_y = (short)(img.size_h - 1); |
| } |
| OS.memmove(region.handle, rect, PhRect_t.sizeof); |
| } |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| } |
| |
| /** |
| * 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); |
| //TODO - implement fill rule |
| return 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.photon_new(data.device, data.font); |
| } |
| |
| /** |
| * Returns a FontMetrics which contains information |
| * about the font currently being used by the receiver |
| * to draw and measure text. |
| * |
| * @return font metrics for the receiver's font |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public FontMetrics getFontMetrics() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| FontQueryInfo info = new FontQueryInfo(); |
| OS.PfQueryFontInfo(data.font, info); |
| return FontMetrics.photon_new(info); |
| } |
| |
| /** |
| * 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); |
| return Color.photon_new(data.device, data.foreground); |
| } |
| |
| /** |
| * Returns the foreground pattern. The default value is |
| * <code>null</code>. |
| * |
| * @return the receiver's foreground pattern |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see Pattern |
| * |
| * @since 3.1 |
| */ |
| public Pattern getForegroundPattern() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return null; |
| } |
| |
| /** |
| * Returns the GCData. |
| * <p> |
| * <b>IMPORTANT:</b> This method is <em>not</em> part of the public |
| * API for <code>GC</code>. It is marked public only so that it |
| * can be shared within the packages provided by SWT. It is not |
| * available on all platforms, and should never be called from |
| * application code. |
| * </p> |
| * |
| * @return the receiver's GCData |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see GCData |
| * |
| * @since 3.2 |
| */ |
| public GCData getGCData() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data; |
| } |
| |
| /** |
| * Returns the receiver's interpolation setting, which will be one of |
| * <code>SWT.DEFAULT</code>, <code>SWT.NONE</code>, |
| * <code>SWT.LOW</code> or <code>SWT.HIGH</code>. |
| * |
| * @return the receiver's interpolation setting |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public int getInterpolation() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return SWT.DEFAULT; |
| } |
| |
| /** |
| * Returns the receiver's line attributes. |
| * |
| * @return the line attributes used for drawing lines |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.3 |
| */ |
| public LineAttributes getLineAttributes() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| float[] dashes = null; |
| if (data.dashes != null) { |
| dashes = new float[data.dashes.length]; |
| for (int i = 0; i < dashes.length; i++) { |
| dashes[i] = data.dashes[i]; |
| } |
| } |
| return new LineAttributes(data.lineWidth, data.lineCap, data.lineJoin, data.lineStyle, dashes, 0, 10); |
| } |
| |
| /** |
| * 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); |
| return data.lineCap; |
| } |
| |
| /** |
| * Returns the receiver's line dash style. The default value is |
| * <code>null</code>. |
| * |
| * @return the line dash style used for drawing lines |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public int[] getLineDash() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| byte[] dashList = data.dashes; |
| if (dashList == null) return null; |
| int[] dashes = new int[dashList.length]; |
| for (int i = 0; i < dashes.length; i++) { |
| dashes[i] = dashList[i] & 0xFF; |
| } |
| 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); |
| return data.lineJoin; |
| } |
| |
| /** |
| * Returns the receiver's line style, which will be one |
| * of the constants <code>SWT.LINE_SOLID</code>, <code>SWT.LINE_DASH</code>, |
| * <code>SWT.LINE_DOT</code>, <code>SWT.LINE_DASHDOT</code> or |
| * <code>SWT.LINE_DASHDOTDOT</code>. |
| * |
| * @return the style used for drawing lines |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getLineStyle() { |
| if (handle == 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); |
| return data.lineWidth; |
| } |
| |
| /** |
| * Returns the receiver's style information. |
| * <p> |
| * Note that the value which is returned by this method <em>may |
| * not match</em> the value which was provided to the constructor |
| * when the receiver was created. This can occur when the underlying |
| * operating system does not support a particular combination of |
| * requested styles. |
| * </p> |
| * |
| * @return the style bits |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 2.1.2 |
| */ |
| public int getStyle () { |
| if (handle == 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); |
| 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); |
| } |
| |
| /** |
| * 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); |
| return data.xorMode; |
| } |
| |
| /** |
| * Returns an integer hash code for the receiver. Any two |
| * objects that return <code>true</code> when passed to |
| * <code>equals</code> must return the same value for this |
| * method. |
| * |
| * @return the receiver's hash |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #equals |
| */ |
| public int hashCode () { |
| return handle; |
| } |
| |
| void init(Drawable drawable, GCData data, int context) { |
| if (data.foreground == -1) data.foreground = DefaultFore; |
| if (data.background == -1) data.background = DefaultBack; |
| if (data.font == null) data.font = data.device.systemFont; |
| dirtyBits = DIRTY_FOREGROUND | DIRTY_BACKGROUND | DIRTY_FONT; |
| |
| Image image = data.image; |
| if (image != null) { |
| image.memGC = this; |
| int prevContext = OS.PmMemStart(context); |
| OS.PgSetDrawBufferSize(DrawBufferSize); |
| OS.PmMemStop(context); |
| OS.PhDCSetCurrent(prevContext); |
| |
| /* |
| * Destroy the mask when it is generated from a transparent |
| * pixel since drawing on the image might change the mask. |
| */ |
| if (image.transparentPixel != -1) { |
| PhImage_t phImage = new PhImage_t (); |
| OS.memmove(phImage, image.handle, PhImage_t.sizeof); |
| if (phImage.mask_bm != 0) { |
| OS.free(phImage.mask_bm); |
| phImage.mask_bm = 0; |
| phImage.mask_bpl = 0; |
| OS.memmove(image.handle, phImage, PhImage_t.sizeof); |
| } |
| } |
| } |
| this.drawable = drawable; |
| this.data = data; |
| handle = context; |
| } |
| |
| /** |
| * 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.clipRects != 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; |
| } |
| |
| /** |
| * Sets the receiver to always use the operating system's advanced graphics |
| * subsystem for all graphics operations if the argument is <code>true</code>. |
| * If the argument is <code>false</code>, the advanced graphics subsystem is |
| * no longer used, advanced graphics state is cleared and the normal graphics |
| * subsystem is used from now on. |
| * <p> |
| * Normally, the advanced graphics subsystem is invoked automatically when |
| * any one of the alpha, antialias, patterns, interpolation, paths, clipping |
| * or transformation operations in the receiver is requested. When the receiver |
| * is switched into advanced mode, the advanced graphics subsystem performs both |
| * advanced and normal graphics operations. Because the two subsystems are |
| * different, their output may differ. Switching to advanced graphics before |
| * any graphics operations are performed ensures that the output is consistent. |
| * </p><p> |
| * Advanced graphics may not be installed for the operating system. In this |
| * case, this operation does nothing. Some operating system have only one |
| * graphics subsystem, so switching from normal to advanced graphics does |
| * nothing. However, switching from advanced to normal graphics will always |
| * clear the advanced graphics state, even for operating systems that have |
| * only one graphics subsystem. |
| * </p> |
| * |
| * @param advanced the new advanced graphics state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #setAlpha |
| * @see #setAntialias |
| * @see #setBackgroundPattern |
| * @see #setClipping(Path) |
| * @see #setForegroundPattern |
| * @see #setLineAttributes |
| * @see #setInterpolation |
| * @see #setTextAntialias |
| * @see #setTransform |
| * @see #getAdvanced |
| * |
| * @since 3.1 |
| */ |
| public void setAdvanced(boolean advanced) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (!advanced) { |
| setAlpha(0xFF); |
| setAntialias(SWT.DEFAULT); |
| setBackgroundPattern(null); |
| setClipping((Rectangle)null); |
| setForegroundPattern(null); |
| setInterpolation(SWT.DEFAULT); |
| setTextAntialias(SWT.DEFAULT); |
| setTransform(null); |
| } |
| } |
| |
| /** |
| * Sets the receiver's alpha value. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * @param alpha the alpha value |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see #getAdvanced |
| * @see #setAdvanced |
| * |
| * @since 3.1 |
| */ |
| public void setAlpha(int alpha) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| } |
| |
| /** |
| * Sets the receiver's anti-aliasing value to the parameter, |
| * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> |
| * or <code>SWT.ON</code>. Note that this controls anti-aliasing for all |
| * <em>non-text drawing</em> operations. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param antialias the anti-aliasing setting |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter is not one of <code>SWT.DEFAULT</code>, |
| * <code>SWT.OFF</code> or <code>SWT.ON</code></li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see #getAdvanced |
| * @see #setAdvanced |
| * @see #setTextAntialias |
| * |
| * @since 3.1 |
| */ |
| public void setAntialias(int antialias) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| switch (antialias) { |
| case SWT.DEFAULT: break; |
| case SWT.OFF: break; |
| case SWT.ON: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| |
| /** |
| * 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); |
| data.background = color.handle; |
| dirtyBits |= DIRTY_BACKGROUND; |
| } |
| |
| /** |
| * Sets the background pattern. The default value is <code>null</code>. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param pattern the new background pattern |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see Pattern |
| * @see #getAdvanced |
| * @see #setAdvanced |
| * |
| * @since 3.1 |
| */ |
| public void setBackgroundPattern (Pattern pattern) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pattern == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| |
| /** |
| * 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; |
| } |
| int clipRects = data.clipRects; |
| if (clipRects != 0) |
| OS.free(clipRects); |
| clipRects = OS.malloc(PhRect_t.sizeof); |
| int clipRectsCount = 1; |
| PhRect_t rect = new PhRect_t(); |
| rect.ul_x = (short)x; |
| rect.ul_y = (short)y; |
| rect.lr_x = (short)(x + width - 1); |
| rect.lr_y = (short)(y + height - 1); |
| OS.memmove(clipRects, rect, PhRect_t.sizeof); |
| data.clipRects = clipRects; |
| data.clipRectsCount = clipRectsCount; |
| dirtyBits |= DIRTY_CLIPPING; |
| } |
| |
| /** |
| * Sets the area of the receiver which can be changed |
| * by drawing operations to the path specified |
| * by the argument. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param path the clipping path. |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the path has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see Path |
| * @see #getAdvanced |
| * @see #setAdvanced |
| * |
| * @since 3.1 |
| */ |
| public void setClipping(Path path) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (path != null && path.isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| } |
| |
| /** |
| * 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) { |
| int clipRects = data.clipRects; |
| if (clipRects != 0) |
| OS.free(clipRects); |
| data.clipRects = data.clipRectsCount = 0; |
| dirtyBits |= DIRTY_CLIPPING; |
| } 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); |
| int clipRects = data.clipRects; |
| int clipRectsCount = data.clipRectsCount; |
| if (clipRects != 0) |
| OS.free(clipRects); |
| if (region == null || region.handle == 0) { |
| clipRects = clipRectsCount = 0; |
| } else if (region.handle == Region.EMPTY_REGION) { |
| clipRects = OS.malloc(PhRect_t.sizeof); |
| OS.memset(clipRects, 0, PhRect_t.sizeof); |
| clipRectsCount = 1; |
| } else { |
| int[] clip_rects_count = new int[1]; |
| clipRects = OS.PhTilesToRects(region.handle, clip_rects_count); |
| clipRectsCount = clip_rects_count[0]; |
| } |
| data.clipRects = clipRects; |
| data.clipRectsCount = clipRectsCount; |
| dirtyBits |= DIRTY_CLIPPING; |
| } |
| |
| /** |
| * Sets the receiver's fill rule to the parameter, which must be one of |
| * <code>SWT.FILL_EVEN_ODD</code> or <code>SWT.FILL_WINDING</code>. |
| * |
| * @param rule the new fill rule |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the rule is not one of <code>SWT.FILL_EVEN_ODD</code> |
| * or <code>SWT.FILL_WINDING</code></li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public void setFillRule(int rule) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| switch (rule) { |
| case SWT.FILL_WINDING: |
| case SWT.FILL_EVEN_ODD: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| //TODO - implement fill rule |
| } |
| |
| /** |
| * 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.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| data.font = font == null ? data.device.systemFont : font.handle; |
| dirtyBits |= DIRTY_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); |
| data.foreground = color.handle; |
| dirtyBits |= DIRTY_FOREGROUND; |
| } |
| |
| /** |
| * Sets the receiver's interpolation setting to the parameter, which |
| * must be one of <code>SWT.DEFAULT</code>, <code>SWT.NONE</code>, |
| * <code>SWT.LOW</code> or <code>SWT.HIGH</code>. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param interpolation the new interpolation setting |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the rule is not one of <code>SWT.DEFAULT</code>, |
| * <code>SWT.NONE</code>, <code>SWT.LOW</code> or <code>SWT.HIGH</code> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see #getAdvanced |
| * @see #setAdvanced |
| * |
| * @since 3.1 |
| */ |
| public void setInterpolation(int interpolation) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| switch (interpolation) { |
| case SWT.DEFAULT: |
| case SWT.NONE: |
| case SWT.LOW: |
| case SWT.HIGH: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| |
| /** |
| * Sets the foreground pattern. The default value is <code>null</code>. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * @param pattern the new foreground pattern |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see Pattern |
| * @see #getAdvanced |
| * @see #setAdvanced |
| * |
| * @since 3.1 |
| */ |
| public void setForegroundPattern (Pattern pattern) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pattern == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| |
| /** |
| * Sets the receiver's line attributes. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * @param attributes the line attributes |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the attributes is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if any of the line attributes is not valid</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see LineAttributes |
| * @see #getAdvanced |
| * @see #setAdvanced |
| * |
| * @since 3.3 |
| */ |
| public void setLineAttributes(LineAttributes attributes) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (attributes == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| //TODO - implement setLineAttributes |
| } |
| |
| /** |
| * 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); |
| switch (cap) { |
| case SWT.CAP_ROUND: |
| case SWT.CAP_FLAT: |
| case SWT.CAP_SQUARE: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| data.lineCap = cap; |
| dirtyBits |= DIRTY_LINECAP; |
| } |
| |
| /** |
| * 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); |
| if (dashes != null && dashes.length != 0) { |
| byte[] dashList = new byte[dashes.length]; |
| for (int i = 0; i < dashes.length; i++) { |
| dashList[i] = (byte)dashes[i]; |
| } |
| data.dashes = dashList; |
| data.lineStyle = SWT.LINE_CUSTOM; |
| } else { |
| data.dashes = null; |
| data.lineStyle = SWT.LINE_SOLID; |
| } |
| dirtyBits |= DIRTY_LINESTYLE; |
| } |
| |
| /** |
| * 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); |
| switch (join) { |
| case SWT.JOIN_MITER: |
| case SWT.JOIN_ROUND: |
| case SWT.JOIN_BEVEL: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| data.lineJoin = join; |
| dirtyBits |= DIRTY_LINEJOIN; |
| } |
| |
| /** |
| * 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); |
| switch (lineStyle) { |
| case SWT.LINE_SOLID: |
| case SWT.LINE_DASH: |
| case SWT.LINE_DOT: |
| case SWT.LINE_DASHDOT: |
| case SWT.LINE_DASHDOTDOT: |
| break; |
| case SWT.LINE_CUSTOM: |
| if (data.dashes == null) lineStyle = SWT.LINE_SOLID; |
| break; |
| default: |
| SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| return; |
| } |
| data.lineStyle = lineStyle; |
| dirtyBits |= DIRTY_LINESTYLE; |
| } |
| |
| /** |
| * 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); |
| data.lineWidth = lineWidth; |
| dirtyBits |= DIRTY_LINEWIDTH; |
| } |
| |
| int setGC() { |
| int result = 0; |
| if (data.image != null) result = OS.PmMemStart(handle); |
| else if (data.rid == OS.Ph_DEV_RID || data.widget != 0) result = OS.PgSetGC(handle); |
| else return result; |
| |
| if (dirtyBits != 0) { |
| if ((dirtyBits & DIRTY_BACKGROUND) != 0) { |
| OS.PgSetFillColor(data.background); |
| } |
| if ((dirtyBits & DIRTY_FOREGROUND) != 0) { |
| int foreColor = data.foreground; |
| OS.PgSetStrokeColor(foreColor); |
| OS.PgSetTextColor(foreColor); |
| } |
| if ((dirtyBits & DIRTY_FONT) != 0) { |
| OS.PfLoadMetrics(data.font); |
| OS.PgSetFont(data.font); |
| } |
| if ((dirtyBits & DIRTY_CLIPPING) != 0) { |
| OS.PgSetMultiClip(data.clipRectsCount, data.clipRects); |
| } |
| if ((dirtyBits & DIRTY_LINECAP) != 0) { |
| int cap_style = 0; |
| switch (data.lineCap) { |
| case SWT.CAP_ROUND:cap_style = OS.Pg_ROUND_CAP; break; |
| case SWT.CAP_FLAT:cap_style = OS.Pg_BUTT_CAP; break; |
| case SWT.CAP_SQUARE:cap_style = OS.Pg_SQUARE_CAP; break; |
| } |
| OS.PgSetStrokeCap(cap_style); |
| } |
| if ((dirtyBits & DIRTY_LINEJOIN) != 0) { |
| int join_style = 0; |
| switch (data.lineJoin) { |
| case SWT.JOIN_ROUND:join_style = OS.Pg_ROUND_JOIN; break; |
| case SWT.JOIN_MITER:join_style = OS.Pg_MITER_JOIN; break; |
| case SWT.JOIN_BEVEL:join_style = OS.Pg_BEVEL_JOIN; break; |
| } |
| OS.PgSetStrokeJoin(join_style); |
| } |
| if ((dirtyBits & DIRTY_LINESTYLE) != 0) { |
| byte[] dashList = null; |
| switch (data.lineStyle) { |
| case SWT.LINE_SOLID: dashList = DashList[0]; break; |
| case SWT.LINE_DASH: dashList = DashList[1]; break; |
| case SWT.LINE_DOT: dashList = DashList[2]; break; |
| case SWT.LINE_DASHDOT: dashList = DashList[3]; break; |
| case SWT.LINE_DASHDOTDOT: dashList = DashList[4]; break; |
| case SWT.LINE_CUSTOM: dashList = data.dashes; break; |
| } |
| OS.PgSetStrokeDash(dashList, dashList.length, 0x10000); |
| } |
| if ((dirtyBits & DIRTY_LINEWIDTH) != 0) { |
| OS.PgSetStrokeWidth(data.lineWidth); |
| } |
| if ((dirtyBits & DIRTY_XORMODE) != 0) { |
| OS.PgSetDrawMode(data.xorMode ? OS.Pg_DRAWMODE_XOR : OS.Pg_DRAWMODE_OPAQUE); |
| } |
| dirtyBits = 0; |
| } |
| return result; |
| } |
| |
| void setGCClipping() { |
| int rid = data.rid; |
| int widget = data.widget; |
| if(OS.QNX_MAJOR >= 6 && OS.QNX_MINOR >= 3) |
| { |
| if(widget > 0) |
| { |
| int visibleTiles = OS.PtGetVisibleTiles(widget); |
| if(data.clipRects != 0) |
| { |
| int gcClip = OS.PhRectsToTiles(data.clipRects, data.clipRectsCount); |
| PhPoint_t pt = new PhPoint_t(); |
| PhRect_t tran_rect = new PhRect_t(); |
| OS.PtWidgetExtent(widget, tran_rect); |
| OS.PtWidgetOffset(widget, pt); |
| pt.x += tran_rect.ul_x; |
| pt.y += tran_rect.ul_y; |
| OS.PhTranslateTiles(gcClip, pt); |
| int inter = OS.PhIntersectTilings(visibleTiles, gcClip, new short[1]); |
| if(inter != 0) |
| { |
| OS.PgSetMultiClipTiles(inter); |
| OS.free(inter); |
| } |
| OS.free(gcClip); |
| } else |
| { |
| OS.PgSetMultiClipTiles(visibleTiles); |
| } |
| OS.free(visibleTiles); |
| } |
| return; |
| } |
| if(rid == 1) |
| OS.PgSetRegion(rid); |
| else |
| if(widget != 0) |
| OS.PgSetRegion(OS.PtWidgetRid(widget)); |
| else |
| if(data.image != null) |
| return; |
| if(widget == 0) |
| return; |
| OS.PgSetMultiClip(data.clipRectsCount, data.clipRects); |
| int clip_tile = getClipping(widget, data.topWidget, true, true, null); |
| int clip_rects_count[] = new int[1]; |
| int clip_rects = OS.PhTilesToRects(clip_tile, clip_rects_count); |
| OS.PhFreeTiles(clip_tile); |
| if(clip_rects_count[0] == 0) |
| { |
| clip_rects_count[0] = 1; |
| OS.free(clip_rects); |
| clip_rects = OS.malloc(8); |
| OS.memset(clip_rects, 0, 8); |
| } |
| OS.PgSetClipping((short)clip_rects_count[0], clip_rects); |
| OS.free(clip_rects); |
| } |
| |
| void setGCTranslation() { |
| PhPoint_t pt = new PhPoint_t (); |
| PhRect_t tran_rect = new PhRect_t(); |
| if (data.widget <= 0 ) return; |
| OS.PtWidgetExtent(data.widget, tran_rect) ; |
| OS.PtWidgetOffset(data.widget, pt); |
| pt.x += tran_rect.ul_x; |
| pt.y += tran_rect.ul_y; |
| OS.PgSetTranslation(pt,0); |
| } |
| |
| int getClipping(int widget, int topWidget, boolean clipChildren, boolean clipSiblings, int[] child_tiles) { |
| if(OS.QNX_MAJOR >= 6 && OS.QNX_MINOR >= 3) |
| if(widget > 0) |
| { |
| int visTiles = OS.PtGetVisibleTiles(widget); |
| PhPoint_t pt = new PhPoint_t(); |
| PhRect_t tranRect = new PhRect_t(); |
| OS.PtWidgetExtent(widget, tranRect); |
| OS.PtWidgetOffset(widget, pt); |
| pt.x += tranRect.ul_x; |
| pt.y += tranRect.ul_y; |
| int tranPoint = OS.malloc(4); |
| OS.memmove(tranPoint, pt, 4); |
| OS.PhDeTranslateTiles(visTiles, tranPoint); |
| return visTiles; |
| } else |
| { |
| return 0; |
| } |
| int child_tile = 0; |
| int widget_tile = OS.PhGetTile(); |
| PhRect_t rect = new PhRect_t(); |
| int args[] = { |
| 1006, 0, 0, 2015, 0, 0 |
| }; |
| if(clipSiblings && OS.PtWidgetClass(topWidget) != OS.PtWindow()) |
| { |
| for(int temp_widget = topWidget; (temp_widget = OS.PtWidgetBrotherInFront(temp_widget)) != 0;) |
| if(OS.PtWidgetIsRealized(temp_widget)) |
| { |
| int tile = OS.PhGetTile(); |
| if(child_tile == 0) |
| child_tile = tile; |
| else |
| child_tile = OS.PhAddMergeTiles(tile, child_tile, null); |
| OS.PtWidgetExtent(temp_widget, tile); |
| args[1] = args[4] = 0; |
| OS.PtGetResources(temp_widget, args.length / 3, args); |
| if((args[1] & 0x100) != 0) |
| { |
| int basic_flags = args[4]; |
| OS.memmove(rect, tile, 8); |
| if((basic_flags & 1) != 0) |
| rect.ul_y++; |
| if((basic_flags & 2) != 0) |
| rect.lr_y--; |
| if((basic_flags & 8) != 0) |
| rect.ul_x++; |
| if((basic_flags & 4) != 0) |
| rect.lr_x--; |
| OS.memmove(tile, rect, 8); |
| } |
| } |
| |
| OS.PtWidgetCanvas(topWidget, widget_tile); |
| OS.PhDeTranslateTiles(child_tile, widget_tile); |
| } |
| if(clipChildren) |
| { |
| for(int temp_widget = OS.PtWidgetChildBack(widget); temp_widget != 0; temp_widget = OS.PtWidgetBrotherInFront(temp_widget)) |
| if(OS.PtWidgetIsRealized(temp_widget)) |
| { |
| int tile = OS.PhGetTile(); |
| if(child_tile == 0) |
| child_tile = tile; |
| else |
| child_tile = OS.PhAddMergeTiles(tile, child_tile, null); |
| OS.PtWidgetExtent(temp_widget, tile); |
| args[1] = args[4] = 0; |
| OS.PtGetResources(temp_widget, args.length / 3, args); |
| if((args[1] & 0x100) != 0) |
| { |
| int basic_flags = args[4]; |
| OS.memmove(rect, tile, 8); |
| if((basic_flags & 1) != 0) |
| rect.ul_y++; |
| if((basic_flags & 2) != 0) |
| rect.lr_y--; |
| if((basic_flags & 8) != 0) |
| rect.ul_x++; |
| if((basic_flags & 4) != 0) |
| rect.lr_x--; |
| OS.memmove(tile, rect, 8); |
| } |
| } |
| |
| } |
| OS.PtWidgetCanvas(widget, widget_tile); |
| OS.PhDeTranslateTiles(widget_tile, widget_tile); |
| if(child_tile != 0) |
| { |
| if(child_tiles != null) |
| child_tiles[0] = OS.PhIntersectTilings(widget_tile, child_tile, new short[1]); |
| int clip_tile = OS.PhClipTilings(widget_tile, child_tile, null); |
| OS.PhFreeTiles(child_tile); |
| return clip_tile; |
| } else |
| { |
| return widget_tile; |
| } |
| } |
| |
| /** |
| * Sets the receiver's text anti-aliasing value to the parameter, |
| * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> |
| * or <code>SWT.ON</code>. Note that this controls anti-aliasing only |
| * for all <em>text drawing</em> operations. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param antialias the anti-aliasing setting |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter is not one of <code>SWT.DEFAULT</code>, |
| * <code>SWT.OFF</code> or <code>SWT.ON</code></li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see #getAdvanced |
| * @see #setAdvanced |
| * @see #setAntialias |
| * |
| * @since 3.1 |
| */ |
| public void setTextAntialias(int antialias) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| switch (antialias) { |
| case SWT.DEFAULT: break; |
| case SWT.OFF: break; |
| case SWT.ON: break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| |
| /** |
| * Sets the transform that is currently being used by the receiver. If |
| * the argument is <code>null</code>, the current transform is set to |
| * the identity transform. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param transform the transform to set |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see Transform |
| * @see #getAdvanced |
| * @see #setAdvanced |
| * |
| * @since 3.1 |
| */ |
| public void setTransform(Transform transform) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (transform != null && transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| |
| /** |
| * 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); |
| data.xorMode = xor; |
| dirtyBits |= DIRTY_XORMODE; |
| } |
| |
| /** |
| * 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); |
| PhRect_t rect = new PhRect_t(); |
| int size = string.length(); |
| char[] buffer = new char[size]; |
| string.getChars(0, size, buffer, 0); |
| |
| int flags = OS.PtEnter(0); |
| try { |
| OS.PfExtentWideText(rect, null, data.font, buffer, size * 2); |
| } finally { |
| if (flags >= 0) OS.PtLeave(flags); |
| } |
| |
| int width; |
| if (size == 0) width = 0; |
| else width = rect.lr_x - (rect.ul_x < 0 ? rect.ul_x : 0) + 1; |
| int height = rect.lr_y - rect.ul_y + 1; |
| return new Point(width, 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 specifying how to process the text |
| * @return a point containing the extent of the string |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Point textExtent(String string, int flags) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if ((flags & ~SWT.DRAW_TRANSPARENT) == 0 || string.length() == 0) { |
| return stringExtent(string); |
| } else { |
| return drawText(string, 0, 0, flags, false); |
| } |
| } |
| |
| /** |
| * 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 + "}"; |
| } |
| |
| void unsetGC(int prevContext) { |
| Image image = data.image; |
| if (image != null) { |
| // OS.PmMemFlush(handle, image.handle); |
| OS.PmMemStop(handle); |
| OS.PhDCSetCurrent(prevContext); |
| } else if (data.rid == OS.Ph_DEV_RID || data.widget != 0) { |
| OS.PgSetGC(prevContext); |
| // OS.PgFlush(); |
| } |
| } |
| |
| public static GC photon_new(Drawable drawable, GCData data) { |
| GC gc = new GC(); |
| int context = drawable.internal_new_GC(data); |
| gc.device = data.device; |
| gc.init(drawable, data, context); |
| return gc; |
| } |
| |
| } |