| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.graphics; |
| |
| |
| import org.eclipse.swt.internal.cairo.*; |
| import org.eclipse.swt.internal.gtk.*; |
| import org.eclipse.swt.internal.*; |
| 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> |
| * The result of drawing on an image that was created with an indexed |
| * palette using a color that is not in the palette is platform specific. |
| * Some platforms will match to the nearest color while other will draw |
| * the color itself. This happens because the allocated image might use |
| * a direct palette on platforms that do not support indexed palette. |
| * </p> |
| * |
| * <p> |
| * Application code must explicitly invoke the <code>GC.dispose()</code> |
| * method to release the operating system resources managed by each instance |
| * when those instances are no longer required. This is <em>particularly</em> |
| * important on Windows95 and Windows98 where the operating system has a limited |
| * number of device contexts available. |
| * </p> |
| * |
| * <p> |
| * Note: Only one of LEFT_TO_RIGHT and RIGHT_TO_LEFT may be specified. |
| * </p> |
| * |
| * @see org.eclipse.swt.events.PaintEvent |
| * @see <a href="http://www.eclipse.org/swt/snippets/#gc">GC snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Examples: GraphicsExample, PaintExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| */ |
| public final class GC extends Resource { |
| /** |
| * the handle to the OS device context |
| * (Warning: This field is platform dependent) |
| * <p> |
| * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT |
| * public API. It is marked public only so that it can be shared |
| * within the packages provided by SWT. It is not available on all |
| * platforms and should never be accessed from application code. |
| * </p> |
| */ |
| public int /*long*/ handle; |
| |
| Drawable drawable; |
| GCData data; |
| |
| final static int FOREGROUND = 1 << 0; |
| final static int BACKGROUND = 1 << 1; |
| final static int FONT = 1 << 2; |
| final static int LINE_STYLE = 1 << 3; |
| final static int LINE_CAP = 1 << 4; |
| final static int LINE_JOIN = 1 << 5; |
| final static int LINE_WIDTH = 1 << 6; |
| final static int LINE_MITERLIMIT = 1 << 7; |
| final static int BACKGROUND_BG = 1 << 8; |
| final static int DRAW_OFFSET = 1 << 9; |
| final static int DRAW = FOREGROUND | LINE_WIDTH | LINE_STYLE | LINE_CAP | LINE_JOIN | LINE_MITERLIMIT | DRAW_OFFSET; |
| final static int FILL = BACKGROUND; |
| |
| static final float[] LINE_DOT = new float[]{1, 1}; |
| static final float[] LINE_DASH = new float[]{3, 1}; |
| static final float[] LINE_DASHDOT = new float[]{3, 1, 1, 1}; |
| static final float[] LINE_DASHDOTDOT = new float[]{3, 1, 1, 1, 1, 1}; |
| static final float[] LINE_DOT_ZERO = new float[]{3, 3}; |
| static final float[] LINE_DASH_ZERO = new float[]{18, 6}; |
| static final float[] LINE_DASHDOT_ZERO = new float[]{9, 6, 3, 6}; |
| static final float[] LINE_DASHDOTDOT_ZERO = new float[]{9, 3, 3, 3, 3, 3}; |
| |
| GC() { |
| } |
| |
| /** |
| * Constructs a new instance of this class which has been |
| * configured to draw on the specified drawable. Sets the |
| * foreground color, background color and font in the GC |
| * to match those in the drawable. |
| * <p> |
| * You must dispose the graphics context when it is no longer required. |
| * </p> |
| * @param drawable the drawable to draw on |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the drawable is null</li> |
| * <li>ERROR_NULL_ARGUMENT - if there is no current device</li> |
| * <li>ERROR_INVALID_ARGUMENT |
| * - if the drawable is an image that is not a bitmap or an icon |
| * - if the drawable is an image or printer that is already selected |
| * into another graphics context</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_NO_HANDLES if a handle could not be obtained for GC creation</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li> |
| * </ul> |
| */ |
| 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) { |
| if (drawable == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| GCData data = new GCData(); |
| data.style = checkStyle(style); |
| int /*long*/ gdkGC = 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, gdkGC); |
| init(); |
| } |
| |
| static void addCairoString(int /*long*/ cairo, String string, float x, float y, Font font) { |
| byte[] buffer = Converter.wcsToMbcs(null, string, true); |
| if (OS.GTK_VERSION >= OS.VERSION(2, 8, 0)) { |
| int /*long*/ layout = OS.pango_cairo_create_layout(cairo); |
| if (layout == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| OS.pango_layout_set_text(layout, buffer, -1); |
| OS.pango_layout_set_font_description(layout, font.handle); |
| double[] currentX = new double[1], currentY = new double[1]; |
| Cairo.cairo_get_current_point(cairo, currentX, currentY); |
| if (currentX[0] != x || currentY[0] != y) { |
| Cairo.cairo_move_to(cairo, x, y); |
| } |
| OS.pango_cairo_layout_path(cairo, layout); |
| OS.g_object_unref(layout); |
| } else { |
| GC.setCairoFont(cairo, font); |
| cairo_font_extents_t extents = new cairo_font_extents_t(); |
| Cairo.cairo_font_extents(cairo, extents); |
| double baseline = y + extents.ascent; |
| Cairo.cairo_move_to(cairo, x, baseline); |
| Cairo.cairo_text_path(cairo, buffer); |
| } |
| } |
| |
| 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); |
| } |
| |
| public static GC gtk_new(int /*long*/ handle, GCData data) { |
| GC gc = new GC(); |
| gc.device = data.device; |
| gc.init(null, data, handle); |
| return gc; |
| } |
| |
| public static GC gtk_new(Drawable drawable, GCData data) { |
| GC gc = new GC(); |
| int /*long*/ gdkGC = drawable.internal_new_GC(data); |
| gc.device = data.device; |
| gc.init(drawable, data, gdkGC); |
| return gc; |
| } |
| |
| void checkGC (int mask) { |
| int state = data.state; |
| if ((state & mask) == mask) return; |
| state = (state ^ mask) & mask; |
| data.state |= mask; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if ((state & (BACKGROUND | FOREGROUND)) != 0) { |
| GdkColor color; |
| Pattern pattern; |
| if ((state & FOREGROUND) != 0) { |
| color = data.foreground; |
| pattern = data.foregroundPattern; |
| data.state &= ~BACKGROUND; |
| } else { |
| color = data.background; |
| pattern = data.backgroundPattern; |
| data.state &= ~FOREGROUND; |
| } |
| if (pattern != null) { |
| if ((data.style & SWT.MIRRORED) != 0 && pattern.surface != 0) { |
| int /*long*/ newPattern = Cairo.cairo_pattern_create_for_surface(pattern.surface); |
| if (newPattern == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_pattern_set_extend(newPattern, Cairo.CAIRO_EXTEND_REPEAT); |
| double[] matrix = {-1, 0, 0, 1, 0, 0}; |
| Cairo.cairo_pattern_set_matrix(newPattern, matrix); |
| Cairo.cairo_set_source(cairo, newPattern); |
| Cairo.cairo_pattern_destroy(newPattern); |
| } else { |
| Cairo.cairo_set_source(cairo, pattern.handle); |
| } |
| } else { |
| Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| } |
| if ((state & FONT) != 0) { |
| if (data.layout != 0) { |
| Font font = data.font; |
| OS.pango_layout_set_font_description(data.layout, font.handle); |
| } |
| if (OS.GTK_VERSION < OS.VERSION(2, 8, 0)) { |
| setCairoFont(cairo, data.font); |
| } |
| } |
| if ((state & LINE_CAP) != 0) { |
| int cap_style = 0; |
| switch (data.lineCap) { |
| case SWT.CAP_ROUND: cap_style = Cairo.CAIRO_LINE_CAP_ROUND; break; |
| case SWT.CAP_FLAT: cap_style = Cairo.CAIRO_LINE_CAP_BUTT; break; |
| case SWT.CAP_SQUARE: cap_style = Cairo.CAIRO_LINE_CAP_SQUARE; break; |
| } |
| Cairo.cairo_set_line_cap(cairo, cap_style); |
| } |
| if ((state & LINE_JOIN) != 0) { |
| int join_style = 0; |
| switch (data.lineJoin) { |
| case SWT.JOIN_MITER: join_style = Cairo.CAIRO_LINE_JOIN_MITER; break; |
| case SWT.JOIN_ROUND: join_style = Cairo.CAIRO_LINE_JOIN_ROUND; break; |
| case SWT.JOIN_BEVEL: join_style = Cairo.CAIRO_LINE_JOIN_BEVEL; break; |
| } |
| Cairo.cairo_set_line_join(cairo, join_style); |
| } |
| if ((state & LINE_WIDTH) != 0) { |
| Cairo.cairo_set_line_width(cairo, data.lineWidth == 0 ? 1 : data.lineWidth); |
| switch (data.lineStyle) { |
| case SWT.LINE_DOT: |
| case SWT.LINE_DASH: |
| case SWT.LINE_DASHDOT: |
| case SWT.LINE_DASHDOTDOT: |
| state |= LINE_STYLE; |
| } |
| } |
| if ((state & LINE_STYLE) != 0) { |
| float dashesOffset = 0; |
| float[] dashes = null; |
| float width = data.lineWidth; |
| switch (data.lineStyle) { |
| case SWT.LINE_SOLID: break; |
| case SWT.LINE_DASH: dashes = width != 0 ? LINE_DASH : LINE_DASH_ZERO; break; |
| case SWT.LINE_DOT: dashes = width != 0 ? LINE_DOT : LINE_DOT_ZERO; break; |
| case SWT.LINE_DASHDOT: dashes = width != 0 ? LINE_DASHDOT : LINE_DASHDOT_ZERO; break; |
| case SWT.LINE_DASHDOTDOT: dashes = width != 0 ? LINE_DASHDOTDOT : LINE_DASHDOTDOT_ZERO; break; |
| case SWT.LINE_CUSTOM: dashes = data.lineDashes; break; |
| } |
| if (dashes != null) { |
| dashesOffset = data.lineDashesOffset; |
| double[] cairoDashes = new double[dashes.length]; |
| for (int i = 0; i < cairoDashes.length; i++) { |
| cairoDashes[i] = width == 0 || data.lineStyle == SWT.LINE_CUSTOM ? dashes[i] : dashes[i] * width; |
| } |
| Cairo.cairo_set_dash(cairo, cairoDashes, cairoDashes.length, dashesOffset); |
| } else { |
| Cairo.cairo_set_dash(cairo, null, 0, 0); |
| } |
| } |
| if ((state & LINE_MITERLIMIT) != 0) { |
| Cairo.cairo_set_miter_limit(cairo, data.lineMiterLimit); |
| } |
| if ((state & DRAW_OFFSET) != 0) { |
| data.cairoXoffset = data.cairoYoffset = 0; |
| double[] matrix = new double[6]; |
| Cairo.cairo_get_matrix(cairo, matrix); |
| double[] dx = new double[]{1}; |
| double[] dy = new double[]{1}; |
| Cairo.cairo_user_to_device_distance(cairo, dx, dy); |
| double scaling = dx[0]; |
| if (scaling < 0) scaling = -scaling; |
| double strokeWidth = data.lineWidth * scaling; |
| if (strokeWidth == 0 || ((int)strokeWidth % 2) == 1) { |
| data.cairoXoffset = 0.5 / scaling; |
| } |
| scaling = dy[0]; |
| if (scaling < 0) scaling = -scaling; |
| strokeWidth = data.lineWidth * scaling; |
| if (strokeWidth == 0 || ((int)strokeWidth % 2) == 1) { |
| data.cairoYoffset = 0.5 / scaling; |
| } |
| } |
| return; |
| } |
| if ((state & (BACKGROUND | FOREGROUND)) != 0) { |
| GdkColor foreground; |
| if ((state & FOREGROUND) != 0) { |
| foreground = data.foreground; |
| data.state &= ~BACKGROUND; |
| } else { |
| foreground = data.background; |
| data.state &= ~FOREGROUND; |
| } |
| OS.gdk_gc_set_foreground(handle, foreground); |
| } |
| if ((state & BACKGROUND_BG) != 0) { |
| GdkColor background = data.background; |
| OS.gdk_gc_set_background(handle, background); |
| } |
| if ((state & FONT) != 0) { |
| if (data.layout != 0) { |
| Font font = data.font; |
| OS.pango_layout_set_font_description(data.layout, font.handle); |
| } |
| } |
| if ((state & (LINE_CAP | LINE_JOIN | LINE_STYLE | LINE_WIDTH)) != 0) { |
| int cap_style = 0; |
| int join_style = 0; |
| int width = (int)data.lineWidth; |
| int line_style = 0; |
| float[] dashes = null; |
| switch (data.lineCap) { |
| case SWT.CAP_ROUND: cap_style = OS.GDK_CAP_ROUND; break; |
| case SWT.CAP_FLAT: cap_style = OS.GDK_CAP_BUTT; break; |
| case SWT.CAP_SQUARE: cap_style = OS.GDK_CAP_PROJECTING; break; |
| } |
| switch (data.lineJoin) { |
| case SWT.JOIN_ROUND: join_style = OS.GDK_JOIN_ROUND; break; |
| case SWT.JOIN_MITER: join_style = OS.GDK_JOIN_MITER; break; |
| case SWT.JOIN_BEVEL: join_style = OS.GDK_JOIN_BEVEL; break; |
| } |
| switch (data.lineStyle) { |
| case SWT.LINE_SOLID: break; |
| case SWT.LINE_DASH: dashes = width != 0 ? LINE_DASH : LINE_DASH_ZERO; break; |
| case SWT.LINE_DOT: dashes = width != 0 ? LINE_DOT : LINE_DOT_ZERO; break; |
| case SWT.LINE_DASHDOT: dashes = width != 0 ? LINE_DASHDOT : LINE_DASHDOT_ZERO; break; |
| case SWT.LINE_DASHDOTDOT: dashes = width != 0 ? LINE_DASHDOTDOT : LINE_DASHDOTDOT_ZERO; break; |
| case SWT.LINE_CUSTOM: dashes = data.lineDashes; break; |
| } |
| if (dashes != null) { |
| if ((state & LINE_STYLE) != 0) { |
| byte[] dash_list = new byte[dashes.length]; |
| for (int i = 0; i < dash_list.length; i++) { |
| dash_list[i] = (byte)(width == 0 || data.lineStyle == SWT.LINE_CUSTOM ? dashes[i] : dashes[i] * width); |
| } |
| OS.gdk_gc_set_dashes(handle, 0, dash_list, dash_list.length); |
| } |
| line_style = OS.GDK_LINE_ON_OFF_DASH; |
| } else { |
| line_style = OS.GDK_LINE_SOLID; |
| } |
| OS.gdk_gc_set_line_attributes(handle, width, line_style, cap_style, join_style); |
| } |
| } |
| |
| int /*long*/ convertRgn(int /*long*/ rgn, double[] matrix) { |
| int /*long*/ newRgn = OS.gdk_region_new(); |
| int[] nRects = new int[1]; |
| int /*long*/[] rects = new int /*long*/[1]; |
| OS.gdk_region_get_rectangles(rgn, rects, nRects); |
| GdkRectangle rect = new GdkRectangle(); |
| int[] pointArray = new int[8]; |
| double[] x = new double[1], y = new double[1]; |
| for (int i=0; i<nRects[0]; i++) { |
| OS.memmove(rect, rects[0] + (i * GdkRectangle.sizeof), GdkRectangle.sizeof); |
| x[0] = rect.x; |
| y[0] = rect.y; |
| Cairo.cairo_matrix_transform_point(matrix, x, y); |
| pointArray[0] = (int)x[0]; |
| pointArray[1] = (int)y[0]; |
| x[0] = rect.x + rect.width; |
| y[0] = rect.y; |
| Cairo.cairo_matrix_transform_point(matrix, x, y); |
| pointArray[2] = (int)Math.round(x[0]); |
| pointArray[3] = (int)y[0]; |
| x[0] = rect.x + rect.width; |
| y[0] = rect.y + rect.height; |
| Cairo.cairo_matrix_transform_point(matrix, x, y); |
| pointArray[4] = (int)Math.round(x[0]); |
| pointArray[5] = (int)Math.round(y[0]); |
| x[0] = rect.x; |
| y[0] = rect.y + rect.height; |
| Cairo.cairo_matrix_transform_point(matrix, x, y); |
| pointArray[6] = (int)x[0]; |
| pointArray[7] = (int)Math.round(y[0]); |
| int /*long*/ polyRgn = OS.gdk_region_polygon(pointArray, pointArray.length / 2, OS.GDK_EVEN_ODD_RULE); |
| OS.gdk_region_union(newRgn, polyRgn); |
| OS.gdk_region_destroy(polyRgn); |
| } |
| if (rects[0] != 0) OS.g_free(rects[0]); |
| return newRgn; |
| } |
| |
| /** |
| * Copies a rectangular area of the receiver at the specified |
| * position into the image, which must be of type <code>SWT.BITMAP</code>. |
| * |
| * @param image the image to copy into |
| * @param x the x coordinate in the receiver of the area to be copied |
| * @param y the y coordinate in the receiver of the area to be copied |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the image is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the image is not a bitmap or has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void copyArea(Image image, int x, int y) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (image.type != SWT.BITMAP || image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| Rectangle rect = image.getBounds(); |
| int /*long*/ gdkGC = OS.gdk_gc_new(image.pixmap); |
| if (gdkGC == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| OS.gdk_gc_set_subwindow(gdkGC, OS.GDK_INCLUDE_INFERIORS); |
| OS.gdk_draw_drawable(image.pixmap, gdkGC, data.drawable, x, y, 0, 0, rect.width, rect.height); |
| OS.g_object_unref(gdkGC); |
| } |
| |
| /** |
| * Copies a rectangular area of the receiver at the source |
| * position onto the receiver at the destination position. |
| * |
| * @param srcX the x coordinate in the receiver of the area to be copied |
| * @param srcY the y coordinate in the receiver of the area to be copied |
| * @param width the width of the area to copy |
| * @param height the height of the area to copy |
| * @param destX the x coordinate in the receiver of the area to copy to |
| * @param destY the y coordinate in the receiver of the area to copy to |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void copyArea(int srcX, int srcY, int width, int height, int destX, int destY) { |
| copyArea(srcX, srcY, width, height, destX, destY, true); |
| } |
| /** |
| * Copies a rectangular area of the receiver at the source |
| * position onto the receiver at the destination position. |
| * |
| * @param srcX the x coordinate in the receiver of the area to be copied |
| * @param srcY the y coordinate in the receiver of the area to be copied |
| * @param width the width of the area to copy |
| * @param height the height of the area to copy |
| * @param destX the x coordinate in the receiver of the area to copy to |
| * @param destY the y coordinate in the receiver of the area to copy to |
| * @param paint if <code>true</code> paint events will be generated for old and obscured areas |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public void copyArea(int srcX, int srcY, int width, int height, int destX, int destY, boolean paint) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width <= 0 || height <= 0) return; |
| int deltaX = destX - srcX, deltaY = destY - srcY; |
| if (deltaX == 0 && deltaY == 0) return; |
| int /*long*/ drawable = data.drawable; |
| if (data.image == null && paint) OS.gdk_gc_set_exposures(handle, true); |
| OS.gdk_draw_drawable(drawable, handle, drawable, srcX, srcY, destX, destY, width, height); |
| if (data.image == null & paint) { |
| OS.gdk_gc_set_exposures(handle, false); |
| boolean disjoint = (destX + width < srcX) || (srcX + width < destX) || (destY + height < srcY) || (srcY + height < destY); |
| GdkRectangle rect = new GdkRectangle (); |
| if (disjoint) { |
| rect.x = srcX; |
| rect.y = srcY; |
| rect.width = width; |
| rect.height = height; |
| OS.gdk_window_invalidate_rect (drawable, rect, false); |
| // OS.gdk_window_clear_area_e(drawable, srcX, srcY, width, height); |
| } else { |
| if (deltaX != 0) { |
| int newX = destX - deltaX; |
| if (deltaX < 0) newX = destX + width; |
| rect.x = newX; |
| rect.y = srcY; |
| rect.width = Math.abs(deltaX); |
| rect.height = height; |
| OS.gdk_window_invalidate_rect (drawable, rect, false); |
| // OS.gdk_window_clear_area_e(drawable, newX, srcY, Math.abs(deltaX), height); |
| } |
| if (deltaY != 0) { |
| int newY = destY - deltaY; |
| if (deltaY < 0) newY = destY + height; |
| rect.x = srcX; |
| rect.y = newY; |
| rect.width = width; |
| rect.height = Math.abs(deltaY); |
| OS.gdk_window_invalidate_rect (drawable, rect, false); |
| // OS.gdk_window_clear_area_e(drawable, srcX, newY, width, Math.abs(deltaY)); |
| } |
| } |
| } |
| } |
| |
| void createLayout() { |
| int /*long*/ context = OS.gdk_pango_context_get(); |
| if (context == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| data.context = context; |
| int /*long*/ layout = OS.pango_layout_new(context); |
| if (layout == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| data.layout = layout; |
| OS.pango_context_set_language(context, OS.gtk_get_default_language()); |
| OS.pango_context_set_base_dir(context, (data.style & SWT.MIRRORED) != 0 ? OS.PANGO_DIRECTION_RTL : OS.PANGO_DIRECTION_LTR); |
| OS.gdk_pango_context_set_colormap(context, OS.gdk_colormap_get_system()); |
| if (OS.GTK_VERSION >= OS.VERSION(2, 4, 0)) { |
| OS.pango_layout_set_auto_dir(layout, false); |
| } |
| } |
| |
| void disposeLayout() { |
| data.string = null; |
| if (data.context != 0) OS.g_object_unref(data.context); |
| if (data.layout != 0) OS.g_object_unref(data.layout); |
| data.layout = data.context = 0; |
| } |
| |
| void destroy() { |
| if (data.disposeCairo) { |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) Cairo.cairo_destroy(cairo); |
| data.cairo = 0; |
| } |
| |
| /* Free resources */ |
| int /*long*/ clipRgn = data.clipRgn; |
| if (clipRgn != 0) OS.gdk_region_destroy(clipRgn); |
| Image image = data.image; |
| if (image != null) { |
| image.memGC = null; |
| if (image.transparentPixel != -1) image.createMask(); |
| } |
| |
| disposeLayout(); |
| |
| /* Dispose the GC */ |
| if (drawable != null) { |
| drawable.internal_dispose_GC(handle, data); |
| } |
| data.drawable = data.clipRgn = 0; |
| drawable = null; |
| handle = 0; |
| data.image = null; |
| data.string = null; |
| data = null; |
| } |
| |
| /** |
| * Draws the outline of a circular or elliptical arc |
| * within the specified rectangular area. |
| * <p> |
| * The resulting arc begins at <code>startAngle</code> and extends |
| * for <code>arcAngle</code> degrees, using the current color. |
| * Angles are interpreted such that 0 degrees is at the 3 o'clock |
| * position. A positive value indicates a counter-clockwise rotation |
| * while a negative value indicates a clockwise rotation. |
| * </p><p> |
| * The center of the arc is the center of the rectangle whose origin |
| * is (<code>x</code>, <code>y</code>) and whose size is specified by the |
| * <code>width</code> and <code>height</code> arguments. |
| * </p><p> |
| * The resulting arc covers an area <code>width + 1</code> pixels wide |
| * by <code>height + 1</code> pixels tall. |
| * </p> |
| * |
| * @param x the x coordinate of the upper-left corner of the arc to be drawn |
| * @param y the y coordinate of the upper-left corner of the arc to be drawn |
| * @param width the width of the arc to be drawn |
| * @param height the height of the arc to be drawn |
| * @param startAngle the beginning angle |
| * @param arcAngle the angular extent of the arc, relative to the start angle |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| checkGC(DRAW); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| if (width == 0 || height == 0 || arcAngle == 0) return; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; |
| if (width == height) { |
| if (arcAngle >= 0) { |
| Cairo.cairo_arc_negative(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } else { |
| Cairo.cairo_arc(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } |
| } else { |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f); |
| Cairo.cairo_scale(cairo, width / 2f, height / 2f); |
| if (arcAngle >= 0) { |
| Cairo.cairo_arc_negative(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } else { |
| Cairo.cairo_arc(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| OS.gdk_draw_arc(data.drawable, handle, 0, x, y, width, height, startAngle * 64, arcAngle * 64); |
| } |
| |
| /** |
| * Draws a rectangle, based on the specified arguments, which has |
| * the appearance of the platform's <em>focus rectangle</em> if the |
| * platform supports such a notion, and otherwise draws a simple |
| * rectangle in the receiver's foreground color. |
| * |
| * @param x the x coordinate of the rectangle |
| * @param y the y coordinate of the rectangle |
| * @param width the width of the rectangle |
| * @param height the height of the rectangle |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #drawRectangle(int, int, int, int) |
| */ |
| public void drawFocus(int x, int y, int width, int height) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| /* |
| * Feature in GTK. The function gtk_widget_get_default_style() |
| * can't be used here because gtk_paint_focus() uses GCs, which |
| * are not valid in the default style. The fix is to use a style |
| * from a widget. |
| */ |
| int /*long*/ style = OS.gtk_widget_get_style(data.device.shellHandle); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| checkGC(FOREGROUND); |
| int[] lineWidth = new int[1]; |
| OS.gtk_widget_style_get(data.device.shellHandle, OS.focus_line_width, lineWidth, 0); |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_set_line_width(cairo, lineWidth[0]); |
| double[] dashes = new double[]{1, 1}; |
| double dash_offset = -lineWidth[0] / 2f; |
| while (dash_offset < 0) dash_offset += 2; |
| Cairo.cairo_set_dash(cairo, dashes, dashes.length, dash_offset); |
| Cairo.cairo_rectangle(cairo, x + lineWidth[0] / 2f, y + lineWidth[0] / 2f, width, height); |
| Cairo.cairo_stroke(cairo); |
| Cairo.cairo_restore(cairo); |
| return; |
| } |
| OS.gtk_paint_focus(style, data.drawable, OS.GTK_STATE_NORMAL, null, data.device.shellHandle, new byte[1], x, y, width, height); |
| } |
| |
| /** |
| * Draws the given image in the receiver at the specified |
| * coordinates. |
| * |
| * @param image the image to draw |
| * @param x the x coordinate of where to draw |
| * @param y the y coordinate of where to draw |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the image is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the given coordinates are outside the bounds of the image</li> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li> |
| * </ul> |
| */ |
| public void drawImage(Image image, int x, int y) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| drawImage(image, 0, 0, -1, -1, x, y, -1, -1, true); |
| } |
| |
| /** |
| * Copies a rectangular area from the source image into a (potentially |
| * different sized) rectangular area in the receiver. If the source |
| * and destination areas are of differing sizes, then the source |
| * area will be stretched or shrunk to fit the destination area |
| * as it is copied. The copy fails if any part of the source rectangle |
| * lies outside the bounds of the source image, or if any of the width |
| * or height arguments are negative. |
| * |
| * @param image the source image |
| * @param srcX the x coordinate in the source image to copy from |
| * @param srcY the y coordinate in the source image to copy from |
| * @param srcWidth the width in pixels to copy from the source |
| * @param srcHeight the height in pixels to copy from the source |
| * @param destX the x coordinate in the destination to copy to |
| * @param destY the y coordinate in the destination to copy to |
| * @param destWidth the width in pixels of the destination rectangle |
| * @param destHeight the height in pixels of the destination rectangle |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the image is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> |
| * <li>ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative. |
| * <li>ERROR_INVALID_ARGUMENT - if the source rectangle is not contained within the bounds of the source image</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li> |
| * </ul> |
| */ |
| public void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (srcWidth == 0 || srcHeight == 0 || destWidth == 0 || destHeight == 0) return; |
| if (srcX < 0 || srcY < 0 || srcWidth < 0 || srcHeight < 0 || destWidth < 0 || destHeight < 0) { |
| SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| drawImage(image, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false); |
| } |
| |
| void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) { |
| int[] width = new int[1]; |
| int[] height = new int[1]; |
| OS.gdk_drawable_get_size(srcImage.pixmap, width, height); |
| int imgWidth = width[0]; |
| int imgHeight = height[0]; |
| if (simple) { |
| srcWidth = destWidth = imgWidth; |
| srcHeight = destHeight = imgHeight; |
| } else { |
| simple = srcX == 0 && srcY == 0 && |
| srcWidth == destWidth && destWidth == imgWidth && |
| srcHeight == destHeight && destHeight == imgHeight; |
| if (srcX + srcWidth > imgWidth || srcY + srcHeight > imgHeight) { |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (data.alpha != 0) { |
| srcImage.createSurface(); |
| Cairo.cairo_save(cairo); |
| if ((data.style & SWT.MIRRORED) != 0) { |
| Cairo.cairo_scale(cairo, -1f, 1); |
| Cairo.cairo_translate(cairo, - 2 * destX - destWidth, 0); |
| } |
| Cairo.cairo_rectangle(cairo, destX , destY, destWidth, destHeight); |
| Cairo.cairo_clip(cairo); |
| Cairo.cairo_translate(cairo, destX - srcX, destY - srcY); |
| if (srcWidth != destWidth || srcHeight != destHeight) { |
| Cairo.cairo_scale(cairo, destWidth / (float)srcWidth, destHeight / (float)srcHeight); |
| } |
| int filter = Cairo.CAIRO_FILTER_GOOD; |
| switch (data.interpolation) { |
| case SWT.DEFAULT: filter = Cairo.CAIRO_FILTER_GOOD; break; |
| case SWT.NONE: filter = Cairo.CAIRO_FILTER_NEAREST; break; |
| case SWT.LOW: filter = Cairo.CAIRO_FILTER_FAST; break; |
| case SWT.HIGH: filter = Cairo.CAIRO_FILTER_BEST; break; |
| } |
| int /*long*/ pattern = Cairo.cairo_pattern_create_for_surface(srcImage.surface); |
| if (pattern == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| if (srcWidth != destWidth || srcHeight != destHeight) { |
| /* |
| * Bug in Cairo. When drawing the image streched with an interpolation |
| * alghorithm, the edges of the image are faded. This is not a bug, but |
| * it is not desired. To avoid the faded edges, it should be possible to |
| * use cairo_pattern_set_extend() to set the pattern extend to either |
| * CAIRO_EXTEND_REFLECT or CAIRO_EXTEND_PAD, but these are not implemented |
| * in some versions of cairo (1.2.x) and have bugs in others (in 1.4.2 it |
| * draws with black edges). The fix is to implement CAIRO_EXTEND_REFLECT |
| * by creating an image that is 3 times bigger than the original, drawing |
| * the original image in every quadrant (with an appropriate transform) and |
| * use this image as the pattern. |
| * |
| * NOTE: For some reaons, it is necessary to use CAIRO_EXTEND_PAD with |
| * the image that was created or the edges are still faded. |
| */ |
| if (Cairo.cairo_version () >= Cairo.CAIRO_VERSION_ENCODE(1, 4, 0)) { |
| int /*long*/ surface = Cairo.cairo_image_surface_create(Cairo.CAIRO_FORMAT_ARGB32, imgWidth * 3, imgHeight * 3); |
| int /*long*/ cr = Cairo.cairo_create(surface); |
| Cairo.cairo_set_source_surface(cr, srcImage.surface, imgWidth, imgHeight); |
| Cairo.cairo_paint(cr); |
| Cairo.cairo_scale(cr, -1, -1); |
| Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth, -imgHeight); |
| Cairo.cairo_paint(cr); |
| Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth * 3, -imgHeight); |
| Cairo.cairo_paint(cr); |
| Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth, -imgHeight * 3); |
| Cairo.cairo_paint(cr); |
| Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth * 3, -imgHeight * 3); |
| Cairo.cairo_paint(cr); |
| Cairo.cairo_scale(cr, 1, -1); |
| Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth, imgHeight); |
| Cairo.cairo_paint(cr); |
| Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth * 3, imgHeight); |
| Cairo.cairo_paint(cr); |
| Cairo.cairo_scale(cr, -1, -1); |
| Cairo.cairo_set_source_surface(cr, srcImage.surface, imgWidth, -imgHeight); |
| Cairo.cairo_paint(cr); |
| Cairo.cairo_set_source_surface(cr, srcImage.surface, imgWidth, -imgHeight * 3); |
| Cairo.cairo_paint(cr); |
| Cairo.cairo_destroy(cr); |
| int /*long*/ newPattern = Cairo.cairo_pattern_create_for_surface(surface); |
| Cairo.cairo_surface_destroy(surface); |
| if (newPattern == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_pattern_destroy(pattern); |
| pattern = newPattern; |
| Cairo.cairo_pattern_set_extend(pattern, Cairo.CAIRO_EXTEND_PAD); |
| double[] matrix = new double[6]; |
| Cairo.cairo_matrix_init_translate(matrix, imgWidth, imgHeight); |
| Cairo.cairo_pattern_set_matrix(pattern, matrix); |
| } |
| // Cairo.cairo_pattern_set_extend(pattern, Cairo.CAIRO_EXTEND_REFLECT); |
| } |
| Cairo.cairo_pattern_set_filter(pattern, filter); |
| Cairo.cairo_set_source(cairo, pattern); |
| if (data.alpha != 0xFF) { |
| Cairo.cairo_paint_with_alpha(cairo, data.alpha / (float)0xFF); |
| } else { |
| Cairo.cairo_paint(cairo); |
| } |
| Cairo.cairo_restore(cairo); |
| Cairo.cairo_pattern_destroy(pattern); |
| } |
| return; |
| } |
| if (srcImage.alpha != -1 || srcImage.alphaData != null) { |
| drawImageAlpha(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight); |
| } else if (srcImage.transparentPixel != -1 || srcImage.mask != 0) { |
| drawImageMask(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight); |
| } else { |
| drawImage(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight); |
| } |
| } |
| void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight) { |
| if (srcWidth == destWidth && srcHeight == destHeight) { |
| OS.gdk_draw_drawable(data.drawable, handle, srcImage.pixmap, srcX, srcY, destX, destY, destWidth, destHeight); |
| } else { |
| if (device.useXRender) { |
| drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, 0, -1); |
| return; |
| } |
| int /*long*/ pixbuf = scale(srcImage.pixmap, srcX, srcY, srcWidth, srcHeight, destWidth, destHeight); |
| if (pixbuf != 0) { |
| OS.gdk_pixbuf_render_to_drawable(pixbuf, data.drawable, handle, 0, 0, destX, destY, destWidth, destHeight, OS.GDK_RGB_DITHER_NORMAL, 0, 0); |
| OS.g_object_unref(pixbuf); |
| } |
| } |
| } |
| void drawImageAlpha(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight) { |
| if (srcImage.alpha == 0) return; |
| if (srcImage.alpha == 255) { |
| drawImage(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight); |
| return; |
| } |
| if (device.useXRender) { |
| drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, srcImage.mask, OS.PictStandardA8); |
| return; |
| } |
| int /*long*/ pixbuf = OS.gdk_pixbuf_new(OS.GDK_COLORSPACE_RGB, true, 8, srcWidth, srcHeight); |
| if (pixbuf == 0) return; |
| int /*long*/ colormap = OS.gdk_colormap_get_system(); |
| OS.gdk_pixbuf_get_from_drawable(pixbuf, srcImage.pixmap, colormap, srcX, srcY, 0, 0, srcWidth, srcHeight); |
| int stride = OS.gdk_pixbuf_get_rowstride(pixbuf); |
| int /*long*/ pixels = OS.gdk_pixbuf_get_pixels(pixbuf); |
| byte[] line = new byte[stride]; |
| byte alpha = (byte)srcImage.alpha; |
| byte[] alphaData = srcImage.alphaData; |
| for (int y=0; y<srcHeight; y++) { |
| int alphaIndex = (y + srcY) * imgWidth + srcX; |
| OS.memmove(line, pixels + (y * stride), stride); |
| for (int x=3; x<stride; x+=4) { |
| line[x] = alphaData == null ? alpha : alphaData[alphaIndex++]; |
| } |
| OS.memmove(pixels + (y * stride), line, stride); |
| } |
| if (srcWidth != destWidth || srcHeight != destHeight) { |
| int /*long*/ scaledPixbuf = OS.gdk_pixbuf_scale_simple(pixbuf, destWidth, destHeight, OS.GDK_INTERP_BILINEAR); |
| OS.g_object_unref(pixbuf); |
| if (scaledPixbuf == 0) return; |
| pixbuf = scaledPixbuf; |
| } |
| /* |
| * Feature in GTK. gdk_draw_pixbuf was introduced in GTK+ 2.2.0 and |
| * supports clipping. |
| */ |
| if (OS.GTK_VERSION >= OS.VERSION (2, 2, 0)) { |
| OS.gdk_draw_pixbuf(data.drawable, handle, pixbuf, 0, 0, destX, destY, destWidth, destHeight, OS.GDK_RGB_DITHER_NORMAL, 0, 0); |
| } else { |
| OS.gdk_pixbuf_render_to_drawable_alpha(pixbuf, data.drawable, 0, 0, destX, destY, destWidth, destHeight, OS.GDK_PIXBUF_ALPHA_BILEVEL, 128, OS.GDK_RGB_DITHER_NORMAL, 0, 0); |
| } |
| OS.g_object_unref(pixbuf); |
| } |
| void drawImageMask(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight) { |
| int /*long*/ drawable = data.drawable; |
| int /*long*/ colorPixmap = srcImage.pixmap; |
| /* Generate the mask if necessary. */ |
| if (srcImage.transparentPixel != -1) srcImage.createMask(); |
| int /*long*/ maskPixmap = srcImage.mask; |
| |
| if (device.useXRender) { |
| drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, maskPixmap, OS.PictStandardA1); |
| } else { |
| if (srcWidth != destWidth || srcHeight != destHeight) { |
| int /*long*/ pixbuf = OS.gdk_pixbuf_new(OS.GDK_COLORSPACE_RGB, true, 8, srcWidth, srcHeight); |
| if (pixbuf != 0) { |
| int /*long*/ colormap = OS.gdk_colormap_get_system(); |
| OS.gdk_pixbuf_get_from_drawable(pixbuf, colorPixmap, colormap, srcX, srcY, 0, 0, srcWidth, srcHeight); |
| int /*long*/ maskPixbuf = OS.gdk_pixbuf_new(OS.GDK_COLORSPACE_RGB, false, 8, srcWidth, srcHeight); |
| if (maskPixbuf != 0) { |
| OS.gdk_pixbuf_get_from_drawable(maskPixbuf, maskPixmap, 0, srcX, srcY, 0, 0, srcWidth, srcHeight); |
| int stride = OS.gdk_pixbuf_get_rowstride(pixbuf); |
| int /*long*/ pixels = OS.gdk_pixbuf_get_pixels(pixbuf); |
| byte[] line = new byte[stride]; |
| int maskStride = OS.gdk_pixbuf_get_rowstride(maskPixbuf); |
| int /*long*/ maskPixels = OS.gdk_pixbuf_get_pixels(maskPixbuf); |
| byte[] maskLine = new byte[maskStride]; |
| for (int y=0; y<srcHeight; y++) { |
| int /*long*/ offset = pixels + (y * stride); |
| OS.memmove(line, offset, stride); |
| int /*long*/ maskOffset = maskPixels + (y * maskStride); |
| OS.memmove(maskLine, maskOffset, maskStride); |
| for (int x=0; x<srcWidth; x++) { |
| if (maskLine[x * 3] == 0) { |
| line[x*4+3] = 0; |
| } |
| } |
| OS.memmove(offset, line, stride); |
| } |
| OS.g_object_unref(maskPixbuf); |
| int /*long*/ scaledPixbuf = OS.gdk_pixbuf_scale_simple(pixbuf, destWidth, destHeight, OS.GDK_INTERP_BILINEAR); |
| if (scaledPixbuf != 0) { |
| int /*long*/[] colorBuffer = new int /*long*/[1]; |
| int /*long*/[] maskBuffer = new int /*long*/[1]; |
| OS.gdk_pixbuf_render_pixmap_and_mask(scaledPixbuf, colorBuffer, maskBuffer, 128); |
| colorPixmap = colorBuffer[0]; |
| maskPixmap = maskBuffer[0]; |
| OS.g_object_unref(scaledPixbuf); |
| } |
| } |
| OS.g_object_unref(pixbuf); |
| } |
| srcX = 0; |
| srcY = 0; |
| srcWidth = destWidth; |
| srcHeight = destHeight; |
| } |
| |
| /* Merge clipping with mask if necessary */ |
| if (data.clipRgn != 0) { |
| int newWidth = srcX + srcWidth; |
| int newHeight = srcY + srcHeight; |
| int bytesPerLine = (newWidth + 7) / 8; |
| byte[] maskData = new byte[bytesPerLine * newHeight]; |
| int /*long*/ mask = OS.gdk_bitmap_create_from_data(0, maskData, newWidth, newHeight); |
| if (mask != 0) { |
| int /*long*/ gc = OS.gdk_gc_new(mask); |
| OS.gdk_region_offset(data.clipRgn, -destX + srcX, -destY + srcY); |
| OS.gdk_gc_set_clip_region(gc, data.clipRgn); |
| OS.gdk_region_offset(data.clipRgn, destX - srcX, destY - srcY); |
| GdkColor color = new GdkColor(); |
| color.pixel = 1; |
| OS.gdk_gc_set_foreground(gc, color); |
| OS.gdk_draw_rectangle(mask, gc, 1, 0, 0, newWidth, newHeight); |
| OS.gdk_gc_set_function(gc, OS.GDK_AND); |
| OS.gdk_draw_drawable(mask, gc, maskPixmap, 0, 0, 0, 0, newWidth, newHeight); |
| OS.g_object_unref(gc); |
| if (maskPixmap != 0 && srcImage.mask != maskPixmap) OS.g_object_unref(maskPixmap); |
| maskPixmap = mask; |
| } |
| } |
| |
| /* Blit cliping the mask */ |
| GdkGCValues values = new GdkGCValues(); |
| OS.gdk_gc_get_values(handle, values); |
| OS.gdk_gc_set_clip_mask(handle, maskPixmap); |
| OS.gdk_gc_set_clip_origin(handle, destX - srcX, destY - srcY); |
| OS.gdk_draw_drawable(drawable, handle, colorPixmap, srcX, srcY, destX, destY, srcWidth, srcHeight); |
| OS.gdk_gc_set_values(handle, values, OS.GDK_GC_CLIP_MASK | OS.GDK_GC_CLIP_X_ORIGIN | OS.GDK_GC_CLIP_Y_ORIGIN); |
| if (data.clipRgn != 0) OS.gdk_gc_set_clip_region(handle, data.clipRgn); |
| } |
| |
| /* Destroy scaled pixmaps */ |
| if (colorPixmap != 0 && srcImage.pixmap != colorPixmap) OS.g_object_unref(colorPixmap); |
| if (maskPixmap != 0 && srcImage.mask != maskPixmap) OS.g_object_unref(maskPixmap); |
| /* Destroy the image mask if the there is a GC created on the image */ |
| if (srcImage.transparentPixel != -1 && srcImage.memGC != null) srcImage.destroyMask(); |
| } |
| void drawImageXRender(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, int /*long*/ maskPixmap, int maskType) { |
| int translateX = 0, translateY = 0; |
| int /*long*/ drawable = data.drawable; |
| if (data.image == null && !data.realDrawable) { |
| int[] x = new int[1], y = new int[1]; |
| int /*long*/ [] real_drawable = new int /*long*/ [1]; |
| OS.gdk_window_get_internal_paint_info(drawable, real_drawable, x, y); |
| drawable = real_drawable[0]; |
| translateX = -x[0]; |
| translateY = -y[0]; |
| } |
| int /*long*/ xDisplay = OS.GDK_DISPLAY(); |
| int /*long*/ maskPict = 0; |
| if (maskPixmap != 0) { |
| int attribCount = 0; |
| XRenderPictureAttributes attrib = null; |
| if (srcImage.alpha != -1) { |
| attribCount = 1; |
| attrib = new XRenderPictureAttributes(); |
| attrib.repeat = true; |
| } |
| maskPict = OS.XRenderCreatePicture(xDisplay, OS.gdk_x11_drawable_get_xid(maskPixmap), OS.XRenderFindStandardFormat(xDisplay, maskType), attribCount, attrib); |
| if (maskPict == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| } |
| int /*long*/ format = OS.XRenderFindVisualFormat(xDisplay, OS.gdk_x11_visual_get_xvisual(OS.gdk_visual_get_system())); |
| int /*long*/ destPict = OS.XRenderCreatePicture(xDisplay, OS.gdk_x11_drawable_get_xid(drawable), format, 0, null); |
| if (destPict == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| int /*long*/ srcPict = OS.XRenderCreatePicture(xDisplay, OS.gdk_x11_drawable_get_xid(srcImage.pixmap), format, 0, null); |
| if (srcPict == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| if (srcWidth != destWidth || srcHeight != destHeight) { |
| int[] transform = new int[]{(int)(((float)srcWidth / destWidth) * 65536), 0, 0, 0, (int)(((float)srcHeight / destHeight) * 65536), 0, 0, 0, 65536}; |
| OS.XRenderSetPictureTransform(xDisplay, srcPict, transform); |
| if (maskPict != 0) OS.XRenderSetPictureTransform(xDisplay, maskPict, transform); |
| srcX *= destWidth / (float)srcWidth; |
| srcY *= destHeight / (float)srcHeight; |
| } |
| int /*long*/ clipping = data.clipRgn; |
| if (data.damageRgn != 0) { |
| if (clipping == 0) { |
| clipping = data.damageRgn; |
| } else { |
| clipping = OS.gdk_region_new(); |
| OS.gdk_region_union(clipping, data.clipRgn); |
| OS.gdk_region_intersect(clipping, data.damageRgn); |
| } |
| } |
| if (clipping != 0) { |
| int[] nRects = new int[1]; |
| int /*long*/[] rects = new int /*long*/[1]; |
| OS.gdk_region_get_rectangles(clipping, rects, nRects); |
| GdkRectangle rect = new GdkRectangle(); |
| short[] xRects = new short[nRects[0] * 4]; |
| for (int i=0, j=0; i<nRects[0]; i++, j+=4) { |
| OS.memmove(rect, rects[0] + (i * GdkRectangle.sizeof), GdkRectangle.sizeof); |
| xRects[j] = (short)rect.x; |
| xRects[j+1] = (short)rect.y; |
| xRects[j+2] = (short)rect.width; |
| xRects[j+3] = (short)rect.height; |
| } |
| OS.XRenderSetPictureClipRectangles(xDisplay, destPict, translateX, translateY, xRects, nRects[0]); |
| if (clipping != data.clipRgn && clipping != data.damageRgn) { |
| OS.gdk_region_destroy(clipping); |
| } |
| if (rects[0] != 0) OS.g_free(rects[0]); |
| } |
| OS.XRenderComposite(xDisplay, maskPict != 0 ? OS.PictOpOver : OS.PictOpSrc, srcPict, maskPict, destPict, srcX, srcY, srcX, srcY, destX + translateX, destY + translateY, destWidth, destHeight); |
| OS.XRenderFreePicture(xDisplay, destPict); |
| OS.XRenderFreePicture(xDisplay, srcPict); |
| if (maskPict != 0) OS.XRenderFreePicture(xDisplay, maskPict); |
| } |
| int /*long*/ scale(int /*long*/ src, int srcX, int srcY, int srcWidth, int srcHeight, int destWidth, int destHeight) { |
| int /*long*/ pixbuf = OS.gdk_pixbuf_new(OS.GDK_COLORSPACE_RGB, false, 8, srcWidth, srcHeight); |
| if (pixbuf == 0) return 0; |
| int /*long*/ colormap = OS.gdk_colormap_get_system(); |
| OS.gdk_pixbuf_get_from_drawable(pixbuf, src, colormap, srcX, srcY, 0, 0, srcWidth, srcHeight); |
| int /*long*/ scaledPixbuf = OS.gdk_pixbuf_scale_simple(pixbuf, destWidth, destHeight, OS.GDK_INTERP_BILINEAR); |
| OS.g_object_unref(pixbuf); |
| return scaledPixbuf; |
| } |
| |
| /** |
| * 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); |
| checkGC(DRAW); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; |
| Cairo.cairo_move_to(cairo, x1 + xOffset, y1 + yOffset); |
| Cairo.cairo_line_to(cairo, x2 + xOffset, y2 + yOffset); |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| OS.gdk_draw_line (data.drawable, handle, x1, y1, x2, y2); |
| } |
| |
| /** |
| * Draws the outline of an oval, using the foreground color, |
| * within the specified rectangular area. |
| * <p> |
| * The result is a circle or ellipse that fits within the |
| * rectangle specified by the <code>x</code>, <code>y</code>, |
| * <code>width</code>, and <code>height</code> arguments. |
| * </p><p> |
| * The oval covers an area that is <code>width + 1</code> |
| * pixels wide and <code>height + 1</code> pixels tall. |
| * </p> |
| * |
| * @param x the x coordinate of the upper left corner of the oval to be drawn |
| * @param y the y coordinate of the upper left corner of the oval to be drawn |
| * @param width the width of the oval to be drawn |
| * @param height the height of the oval to be drawn |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawOval(int x, int y, int width, int height) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| checkGC(DRAW); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; |
| if (width == height) { |
| Cairo.cairo_arc_negative(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f, width / 2f, 0, -2 * (float)Compatibility.PI); |
| } else { |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f); |
| Cairo.cairo_scale(cairo, width / 2f, height / 2f); |
| Cairo.cairo_arc_negative(cairo, 0, 0, 1, 0, -2 * (float)Compatibility.PI); |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| OS.gdk_draw_arc(data.drawable, handle, 0, x, y, width, height, 0, 23040); |
| } |
| |
| /** |
| * 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); |
| initCairo(); |
| checkGC(DRAW); |
| int /*long*/ cairo = data.cairo; |
| Cairo.cairo_save(cairo); |
| double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; |
| Cairo.cairo_translate(cairo, xOffset, yOffset); |
| int /*long*/ copy = Cairo.cairo_copy_path(path.handle); |
| if (copy == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_append_path(cairo, copy); |
| Cairo.cairo_path_destroy(copy); |
| Cairo.cairo_stroke(cairo); |
| Cairo.cairo_restore(cairo); |
| } |
| |
| /** |
| * Draws a pixel, using the foreground color, at the specified |
| * point (<code>x</code>, <code>y</code>). |
| * <p> |
| * Note that the receiver's line attributes do not affect this |
| * operation. |
| * </p> |
| * |
| * @param x the point's x coordinate |
| * @param y the point's y coordinate |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.0 |
| */ |
| public void drawPoint (int x, int y) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| checkGC(DRAW); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_rectangle(cairo, x, y, 1, 1); |
| Cairo.cairo_fill(cairo); |
| return; |
| } |
| OS.gdk_draw_point(data.drawable, handle, x, y); |
| } |
| |
| /** |
| * Draws the closed polygon which is defined by the specified array |
| * of integer coordinates, using the receiver's foreground color. The array |
| * contains alternating x and y values which are considered to represent |
| * points which are the vertices of the polygon. Lines are drawn between |
| * each consecutive pair, and between the first pair and last pair in the |
| * array. |
| * |
| * @param pointArray an array of alternating x and y values which are the vertices of the polygon |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT if pointArray is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawPolygon(int[] pointArray) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| checkGC(DRAW); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| drawPolyline(cairo, pointArray, true); |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| OS.gdk_draw_polygon(data.drawable, handle, 0, pointArray, pointArray.length / 2); |
| } |
| |
| /** |
| * 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); |
| checkGC(DRAW); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| drawPolyline(cairo, pointArray, false); |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| OS.gdk_draw_lines(data.drawable, handle, pointArray, pointArray.length / 2); |
| } |
| |
| void drawPolyline(int /*long*/ cairo, int[] pointArray, boolean close) { |
| int count = pointArray.length / 2; |
| if (count == 0) return; |
| double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; |
| Cairo.cairo_move_to(cairo, pointArray[0] + xOffset, pointArray[1] + yOffset); |
| for (int i = 1, j=2; i < count; i++, j += 2) { |
| Cairo.cairo_line_to(cairo, pointArray[j] + xOffset, pointArray[j + 1] + yOffset); |
| } |
| if (close) Cairo.cairo_close_path(cairo); |
| } |
| |
| /** |
| * Draws the outline of the rectangle specified by the arguments, |
| * using the receiver's foreground color. The left and right edges |
| * of the rectangle are at <code>x</code> and <code>x + width</code>. |
| * The top and bottom edges are at <code>y</code> and <code>y + height</code>. |
| * |
| * @param x the x coordinate of the rectangle to be drawn |
| * @param y the y coordinate of the rectangle to be drawn |
| * @param width the width of the rectangle to be drawn |
| * @param height the height of the rectangle to be drawn |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawRectangle(int x, int y, int width, int height) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| checkGC(DRAW); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; |
| Cairo.cairo_rectangle(cairo, x + xOffset, y + yOffset, width, height); |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| OS.gdk_draw_rectangle(data.drawable, handle, 0, x, y, width, height); |
| } |
| |
| /** |
| * Draws the outline of the specified rectangle, using the receiver's |
| * foreground color. The left and right edges of the rectangle are at |
| * <code>rect.x</code> and <code>rect.x + rect.width</code>. The top |
| * and bottom edges are at <code>rect.y</code> and |
| * <code>rect.y + rect.height</code>. |
| * |
| * @param rect the rectangle to draw |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawRectangle(Rectangle rect) { |
| if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| drawRectangle (rect.x, rect.y, rect.width, rect.height); |
| } |
| /** |
| * Draws the outline of the round-cornered rectangle specified by |
| * the arguments, using the receiver's foreground color. The left and |
| * right edges of the rectangle are at <code>x</code> and <code>x + width</code>. |
| * The top and bottom edges are at <code>y</code> and <code>y + height</code>. |
| * The <em>roundness</em> of the corners is specified by the |
| * <code>arcWidth</code> and <code>arcHeight</code> arguments, which |
| * are respectively the width and height of the ellipse used to draw |
| * the corners. |
| * |
| * @param x the x coordinate of the rectangle to be drawn |
| * @param y the y coordinate of the rectangle to be drawn |
| * @param width the width of the rectangle to be drawn |
| * @param height the height of the rectangle to be drawn |
| * @param arcWidth the width of the arc |
| * @param arcHeight the height of the arc |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawRoundRectangle(int x, int y, int width, int height, int arcWidth, int arcHeight) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| checkGC(DRAW); |
| int nx = x; |
| int ny = y; |
| int nw = width; |
| int nh = height; |
| int naw = arcWidth; |
| int nah = arcHeight; |
| if (nw < 0) { |
| nw = 0 - nw; |
| nx = nx - nw; |
| } |
| if (nh < 0) { |
| nh = 0 - nh; |
| ny = ny -nh; |
| } |
| if (naw < 0) naw = 0 - naw; |
| if (nah < 0) nah = 0 - nah; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; |
| if (naw == 0 || nah == 0) { |
| Cairo.cairo_rectangle(cairo, x + xOffset, y + yOffset, width, height); |
| } else { |
| float naw2 = naw / 2f; |
| float nah2 = nah / 2f; |
| float fw = nw / naw2; |
| float fh = nh / nah2; |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, nx + xOffset, ny + yOffset); |
| Cairo.cairo_scale(cairo, naw2, nah2); |
| Cairo.cairo_move_to(cairo, fw - 1, 0); |
| Cairo.cairo_arc(cairo, fw - 1, 1, 1, Compatibility.PI + Compatibility.PI/2.0, Compatibility.PI*2.0); |
| Cairo.cairo_arc(cairo, fw - 1, fh - 1, 1, 0, Compatibility.PI/2.0); |
| Cairo.cairo_arc(cairo, 1, fh - 1, 1, Compatibility.PI/2, Compatibility.PI); |
| Cairo.cairo_arc(cairo, 1, 1, 1, Compatibility.PI, 270.0*Compatibility.PI/180.0); |
| Cairo.cairo_close_path(cairo); |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_stroke(cairo); |
| return; |
| } |
| int naw2 = naw / 2; |
| int nah2 = nah / 2; |
| int /*long*/ drawable = data.drawable; |
| if (nw > naw) { |
| if (nh > nah) { |
| OS.gdk_draw_arc(drawable, handle, 0, nx, ny, naw, nah, 5760, 5760); |
| OS.gdk_draw_line(drawable, handle, nx + naw2, ny, nx + nw - naw2, ny); |
| OS.gdk_draw_arc(drawable, handle, 0, nx + nw - naw, ny, naw, nah, 0, 5760); |
| OS.gdk_draw_line(drawable, handle, nx + nw, ny + nah2, nx + nw, ny + nh - nah2); |
| OS.gdk_draw_arc(drawable, handle, 0, nx + nw - naw, ny + nh - nah, naw, nah, 17280, 5760); |
| OS.gdk_draw_line(drawable,handle, nx + naw2, ny + nh, nx + nw - naw2, ny + nh); |
| OS.gdk_draw_arc(drawable, handle, 0, nx, ny + nh - nah, naw, nah, 11520, 5760); |
| OS.gdk_draw_line(drawable, handle, nx, ny + nah2, nx, ny + nh - nah2); |
| } else { |
| OS.gdk_draw_arc(drawable, handle, 0, nx, ny, naw, nh, 5760, 11520); |
| OS.gdk_draw_line(drawable, handle, nx + naw2, ny, nx + nw - naw2, ny); |
| OS.gdk_draw_arc(drawable, handle, 0, nx + nw - naw, ny, naw, nh, 17280, 11520); |
| OS.gdk_draw_line(drawable,handle, nx + naw2, ny + nh, nx + nw - naw2, ny + nh); |
| } |
| } else { |
| if (nh > nah) { |
| OS.gdk_draw_arc(drawable, handle, 0, nx, ny, nw, nah, 0, 11520); |
| OS.gdk_draw_line(drawable, handle, nx + nw, ny + nah2, nx + nw, ny + nh - nah2); |
| OS.gdk_draw_arc(drawable, handle, 0, nx, ny + nh - nah, nw, nah, 11520, 11520); |
| OS.gdk_draw_line(drawable,handle, nx, ny + nah2, nx, ny + nh - nah2); |
| } else { |
| OS.gdk_draw_arc(drawable, handle, 0, nx, ny, nw, nh, 0, 23040); |
| } |
| } |
| } |
| |
| /** |
| * Draws the given string, using the receiver's current font and |
| * foreground color. No tab expansion or carriage return processing |
| * will be performed. The background of the rectangular area where |
| * the string is being drawn will be filled with the receiver's |
| * background color. |
| * |
| * @param string the string to be drawn |
| * @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawString (String string, int x, int y) { |
| drawString(string, x, y, false); |
| } |
| /** |
| * Draws the given string, using the receiver's current font and |
| * foreground color. No tab expansion or carriage return processing |
| * will be performed. If <code>isTransparent</code> is <code>true</code>, |
| * then the background of the rectangular area where the string is being |
| * drawn will not be modified, otherwise it will be filled with the |
| * receiver's background color. |
| * |
| * @param string the string to be drawn |
| * @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn |
| * @param isTransparent if <code>true</code> the background will be transparent, otherwise it will be opaque |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawString(String string, int x, int y, boolean isTransparent) { |
| drawText(string, x, y, isTransparent ? SWT.DRAW_TRANSPARENT : 0); |
| } |
| |
| /** |
| * Draws the given string, using the receiver's current font and |
| * foreground color. Tab expansion and carriage return processing |
| * are performed. The background of the rectangular area where |
| * the text is being drawn will be filled with the receiver's |
| * background color. |
| * |
| * @param string the string to be drawn |
| * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawText(String string, int x, int y) { |
| drawText(string, x, y, SWT.DRAW_DELIMITER | SWT.DRAW_TAB); |
| } |
| |
| /** |
| * Draws the given string, using the receiver's current font and |
| * foreground color. Tab expansion and carriage return processing |
| * are performed. If <code>isTransparent</code> is <code>true</code>, |
| * then the background of the rectangular area where the text is being |
| * drawn will not be modified, otherwise it will be filled with the |
| * receiver's background color. |
| * |
| * @param string the string to be drawn |
| * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param isTransparent if <code>true</code> the background will be transparent, otherwise it will be opaque |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawText(String string, int x, int y, boolean isTransparent) { |
| int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB; |
| if (isTransparent) flags |= SWT.DRAW_TRANSPARENT; |
| drawText(string, x, y, flags); |
| } |
| |
| /** |
| * Draws the given string, using the receiver's current font and |
| * foreground color. Tab expansion, line delimiter and mnemonic |
| * processing are performed according to the specified flags. If |
| * <code>flags</code> includes <code>DRAW_TRANSPARENT</code>, |
| * then the background of the rectangular area where the text is being |
| * drawn will not be modified, otherwise it will be filled with the |
| * receiver's background color. |
| * <p> |
| * The parameter <code>flags</code> may be a combination of: |
| * <dl> |
| * <dt><b>DRAW_DELIMITER</b></dt> |
| * <dd>draw multiple lines</dd> |
| * <dt><b>DRAW_TAB</b></dt> |
| * <dd>expand tabs</dd> |
| * <dt><b>DRAW_MNEMONIC</b></dt> |
| * <dd>underline the mnemonic character</dd> |
| * <dt><b>DRAW_TRANSPARENT</b></dt> |
| * <dd>transparent background</dd> |
| * </dl> |
| * </p> |
| * |
| * @param string the string to be drawn |
| * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn |
| * @param flags the flags specifying how to process the text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawText (String string, int x, int y, int flags) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (string.length() == 0) return; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (OS.GTK_VERSION < OS.VERSION(2, 8, 0)) { |
| //TODO - honor flags |
| checkGC(FOREGROUND | FONT); |
| cairo_font_extents_t extents = new cairo_font_extents_t(); |
| Cairo.cairo_font_extents(cairo, extents); |
| double baseline = y + extents.ascent; |
| Cairo.cairo_move_to(cairo, x, baseline); |
| byte[] buffer = Converter.wcsToMbcs(null, string, true); |
| Cairo.cairo_show_text(cairo, buffer); |
| Cairo.cairo_new_path(cairo); |
| return; |
| } |
| } |
| setString(string, flags); |
| if (cairo != 0) { |
| checkGC(FONT); |
| if ((flags & SWT.DRAW_TRANSPARENT) == 0) { |
| checkGC(BACKGROUND); |
| if (data.stringWidth == -1) { |
| computeStringSize(); |
| } |
| Cairo.cairo_rectangle(cairo, x, y, data.stringWidth, data.stringHeight); |
| Cairo.cairo_fill(cairo); |
| } |
| checkGC(FOREGROUND); |
| if ((data.style & SWT.MIRRORED) != 0) { |
| Cairo.cairo_save(cairo); |
| if (data.stringWidth == -1) { |
| computeStringSize(); |
| } |
| Cairo.cairo_scale(cairo, -1f, 1); |
| Cairo.cairo_translate(cairo, -2 * x - data.stringWidth, 0); |
| } |
| Cairo.cairo_move_to(cairo, x, y); |
| OS.pango_cairo_show_layout(cairo, data.layout); |
| if ((data.style & SWT.MIRRORED) != 0) { |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_new_path(cairo); |
| return; |
| } |
| checkGC(FOREGROUND | FONT | BACKGROUND_BG); |
| GdkColor background = null; |
| if ((flags & SWT.DRAW_TRANSPARENT) == 0) background = data.background; |
| if (!data.xorMode) { |
| OS.gdk_draw_layout_with_colors(data.drawable, handle, x, y, data.layout, null, background); |
| } else { |
| int /*long*/ layout = data.layout; |
| if (data.stringWidth == -1) { |
| computeStringSize(); |
| } |
| int /*long*/ pixmap = OS.gdk_pixmap_new(OS.GDK_ROOT_PARENT(), data.stringWidth, data.stringHeight, -1); |
| if (pixmap == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| int /*long*/ gdkGC = OS.gdk_gc_new(pixmap); |
| if (gdkGC == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| GdkColor black = new GdkColor(); |
| OS.gdk_gc_set_foreground(gdkGC, black); |
| OS.gdk_draw_rectangle(pixmap, gdkGC, 1, 0, 0, data.stringWidth, data.stringHeight); |
| OS.gdk_gc_set_foreground(gdkGC, data.foreground); |
| OS.gdk_draw_layout_with_colors(pixmap, gdkGC, 0, 0, layout, null, background); |
| OS.g_object_unref(gdkGC); |
| OS.gdk_draw_drawable(data.drawable, handle, pixmap, 0, 0, x, y, data.stringWidth, data.stringHeight); |
| OS.g_object_unref(pixmap); |
| } |
| } |
| |
| /** |
| * Compares the argument to the receiver, and returns true |
| * if they represent the <em>same</em> object using a class |
| * specific comparison. |
| * |
| * @param object the object to compare with this object |
| * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise |
| * |
| * @see #hashCode |
| */ |
| public boolean equals(Object object) { |
| if (object == this) return true; |
| if (!(object instanceof GC)) return false; |
| return handle == ((GC)object).handle; |
| } |
| |
| /** |
| * Fills the interior of a circular or elliptical arc within |
| * the specified rectangular area, with the receiver's background |
| * color. |
| * <p> |
| * The resulting arc begins at <code>startAngle</code> and extends |
| * for <code>arcAngle</code> degrees, using the current color. |
| * Angles are interpreted such that 0 degrees is at the 3 o'clock |
| * position. A positive value indicates a counter-clockwise rotation |
| * while a negative value indicates a clockwise rotation. |
| * </p><p> |
| * The center of the arc is the center of the rectangle whose origin |
| * is (<code>x</code>, <code>y</code>) and whose size is specified by the |
| * <code>width</code> and <code>height</code> arguments. |
| * </p><p> |
| * The resulting arc covers an area <code>width + 1</code> pixels wide |
| * by <code>height + 1</code> pixels tall. |
| * </p> |
| * |
| * @param x the x coordinate of the upper-left corner of the arc to be filled |
| * @param y the y coordinate of the upper-left corner of the arc to be filled |
| * @param width the width of the arc to be filled |
| * @param height the height of the arc to be filled |
| * @param startAngle the beginning angle |
| * @param arcAngle the angular extent of the arc, relative to the start angle |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #drawArc |
| */ |
| public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| checkGC(FILL); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| if (width == 0 || height == 0 || arcAngle == 0) return; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (width == height) { |
| if (arcAngle >= 0) { |
| Cairo.cairo_arc_negative(cairo, x + width / 2f, y + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } else { |
| Cairo.cairo_arc(cairo, x + width / 2f, y + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } |
| Cairo.cairo_line_to(cairo, x + width / 2f, y + height / 2f); |
| } else { |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, x + width / 2f, y + height / 2f); |
| Cairo.cairo_scale(cairo, width / 2f, height / 2f); |
| if (arcAngle >= 0) { |
| Cairo.cairo_arc_negative(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } else { |
| Cairo.cairo_arc(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); |
| } |
| Cairo.cairo_line_to(cairo, 0, 0); |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_fill(cairo); |
| return; |
| } |
| OS.gdk_draw_arc(data.drawable, handle, 1, x, y, width, height, startAngle * 64, arcAngle * 64); |
| } |
| |
| /** |
| * 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; |
| |
| /* Rewrite this to use GdkPixbuf */ |
| |
| RGB backgroundRGB, foregroundRGB; |
| backgroundRGB = getBackground().getRGB(); |
| foregroundRGB = getForeground().getRGB(); |
| |
| RGB fromRGB, toRGB; |
| fromRGB = foregroundRGB; |
| toRGB = backgroundRGB; |
| boolean swapColors = false; |
| if (width < 0) { |
| x += width; width = -width; |
| if (! vertical) swapColors = true; |
| } |
| if (height < 0) { |
| y += height; height = -height; |
| if (vertical) swapColors = true; |
| } |
| if (swapColors) { |
| fromRGB = backgroundRGB; |
| toRGB = foregroundRGB; |
| } |
| if (fromRGB.equals(toRGB)) { |
| fillRectangle(x, y, width, height); |
| return; |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| int /*long*/ pattern; |
| if (vertical) { |
| pattern = Cairo.cairo_pattern_create_linear (0.0, 0.0, 0.0, 1.0); |
| } else { |
| pattern = Cairo.cairo_pattern_create_linear (0.0, 0.0, 1.0, 0.0); |
| } |
| Cairo.cairo_pattern_add_color_stop_rgba (pattern, 0, fromRGB.red / 255f, fromRGB.green / 255f, fromRGB.blue / 255f, data.alpha / 255f); |
| Cairo.cairo_pattern_add_color_stop_rgba (pattern, 1, toRGB.red / 255f, toRGB.green / 255f, toRGB.blue / 255f, data.alpha / 255f); |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, x, y); |
| Cairo.cairo_scale(cairo, width, height); |
| Cairo.cairo_rectangle(cairo, 0, 0, 1, 1); |
| Cairo.cairo_set_source(cairo, pattern); |
| Cairo.cairo_fill(cairo); |
| Cairo.cairo_restore(cairo); |
| Cairo.cairo_pattern_destroy(pattern); |
| return; |
| } |
| ImageData.fillGradientRectangle(this, data.device, |
| x, y, width, height, vertical, fromRGB, toRGB, |
| 8, 8, 8); |
| } |
| |
| /** |
| * 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); |
| checkGC(FILL); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (width == height) { |
| Cairo.cairo_arc_negative(cairo, x + width / 2f, y + height / 2f, width / 2f, 0, 2 * (float)Compatibility.PI); |
| } else { |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, x + width / 2f, y + height / 2f); |
| Cairo.cairo_scale(cairo, width / 2f, height / 2f); |
| Cairo.cairo_arc_negative(cairo, 0, 0, 1, 0, 2 * (float)Compatibility.PI); |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_fill(cairo); |
| return; |
| } |
| OS.gdk_draw_arc(data.drawable, handle, 1, x, y, width, height, 0, 23040); |
| } |
| |
| /** |
| * 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); |
| initCairo(); |
| checkGC(FILL); |
| int /*long*/ cairo = data.cairo; |
| int /*long*/ copy = Cairo.cairo_copy_path(path.handle); |
| if (copy == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_append_path(cairo, copy); |
| Cairo.cairo_path_destroy(copy); |
| Cairo.cairo_fill(cairo); |
| } |
| |
| /** |
| * Fills the interior of the closed polygon which is defined by the |
| * specified array of integer coordinates, using the receiver's |
| * background color. The array contains alternating x and y values |
| * which are considered to represent points which are the vertices of |
| * the polygon. Lines are drawn between each consecutive pair, and |
| * between the first pair and last pair in the array. |
| * |
| * @param pointArray an array of alternating x and y values which are the vertices of the polygon |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT if pointArray is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #drawPolygon |
| */ |
| public void fillPolygon(int[] pointArray) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| checkGC(FILL); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| drawPolyline(cairo, pointArray, true); |
| Cairo.cairo_fill(cairo); |
| return; |
| } |
| OS.gdk_draw_polygon(data.drawable, handle, 1, pointArray, pointArray.length / 2); |
| } |
| |
| /** |
| * 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); |
| checkGC(FILL); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_rectangle(cairo, x, y, width, height); |
| Cairo.cairo_fill(cairo); |
| return; |
| } |
| OS.gdk_draw_rectangle(data.drawable, handle, 1, x, y, width, height); |
| } |
| |
| /** |
| * Fills the interior of the specified rectangle, using the receiver's |
| * background color. |
| * |
| * @param rect the rectangle to be filled |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #drawRectangle(int, int, int, int) |
| */ |
| public void fillRectangle(Rectangle rect) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| fillRectangle(rect.x, rect.y, rect.width, rect.height); |
| } |
| |
| /** |
| * Fills the interior of the round-cornered rectangle specified by |
| * the arguments, using the receiver's background color. |
| * |
| * @param x the x coordinate of the rectangle to be filled |
| * @param y the y coordinate of the rectangle to be filled |
| * @param width the width of the rectangle to be filled |
| * @param height the height of the rectangle to be filled |
| * @param arcWidth the width of the arc |
| * @param arcHeight the height of the arc |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #drawRoundRectangle |
| */ |
| public void fillRoundRectangle(int x, int y, int width, int height, int arcWidth, int arcHeight) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| checkGC(FILL); |
| int nx = x; |
| int ny = y; |
| int nw = width; |
| int nh = height; |
| int naw = arcWidth; |
| int nah = arcHeight; |
| if (nw < 0) { |
| nw = 0 - nw; |
| nx = nx - nw; |
| } |
| if (nh < 0) { |
| nh = 0 - nh; |
| ny = ny -nh; |
| } |
| if (naw < 0) naw = 0 - naw; |
| if (nah < 0) nah = 0 - nah; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (naw == 0 || nah == 0) { |
| Cairo.cairo_rectangle(cairo, x, y, width, height); |
| } else { |
| float naw2 = naw / 2f; |
| float nah2 = nah / 2f; |
| float fw = nw / naw2; |
| float fh = nh / nah2; |
| Cairo.cairo_save(cairo); |
| Cairo.cairo_translate(cairo, nx, ny); |
| Cairo.cairo_scale(cairo, naw2, nah2); |
| Cairo.cairo_move_to(cairo, fw - 1, 0); |
| Cairo.cairo_arc(cairo, fw - 1, 1, 1, Compatibility.PI + Compatibility.PI/2.0, Compatibility.PI*2.0); |
| Cairo.cairo_arc(cairo, fw - 1, fh - 1, 1, 0, Compatibility.PI/2.0); |
| Cairo.cairo_arc(cairo, 1, fh - 1, 1, Compatibility.PI/2, Compatibility.PI); |
| Cairo.cairo_arc(cairo, 1, 1, 1, Compatibility.PI, 270.0*Compatibility.PI/180.0); |
| Cairo.cairo_close_path(cairo); |
| Cairo.cairo_restore(cairo); |
| } |
| Cairo.cairo_fill(cairo); |
| return; |
| } |
| int naw2 = naw / 2; |
| int nah2 = nah / 2; |
| int /*long*/ drawable = data.drawable; |
| if (nw > naw) { |
| if (nh > nah) { |
| OS.gdk_draw_arc(drawable, handle, 1, nx, ny, naw, nah, 5760, 5760); |
| OS.gdk_draw_rectangle(drawable, handle, 1, nx + naw2, ny, nw - naw2 * 2, nh); |
| OS.gdk_draw_arc(drawable, handle, 1, nx + nw - naw, ny, naw, nah, 0, 5760); |
| OS.gdk_draw_rectangle(drawable, handle, 1, nx, ny + nah2, naw2, nh - nah2 * 2); |
| OS.gdk_draw_arc(drawable, handle, 1, nx + nw - naw, ny + nh - nah, naw, nah, 17280, 5760); |
| OS.gdk_draw_rectangle(drawable, handle, 1, nx + nw - naw2, ny + nah2, naw2, nh - nah2 * 2); |
| OS.gdk_draw_arc(drawable, handle, 1, nx, ny + nh - nah, naw, nah, 11520, 5760); |
| } else { |
| OS.gdk_draw_arc(drawable, handle, 1, nx, ny, naw, nh, 5760, 11520); |
| OS.gdk_draw_rectangle(drawable, handle, 1, nx + naw2, ny, nw - naw2 * 2, nh); |
| OS.gdk_draw_arc(drawable, handle, 1, nx + nw - naw, ny, naw, nh, 17280, 11520); |
| } |
| } else { |
| if (nh > nah) { |
| OS.gdk_draw_arc(drawable, handle, 1, nx, ny, nw, nah, 0, 11520); |
| OS.gdk_draw_rectangle(drawable, handle, 1, nx, ny + nah2, nw, nh - nah2 * 2); |
| OS.gdk_draw_arc(drawable, handle, 1, nx, ny + nh - nah, nw, nah, 11520, 11520); |
| } else { |
| OS.gdk_draw_arc(drawable, handle, 1, nx, ny, nw, nh, 0, 23040); |
| } |
| } |
| } |
| |
| int fixMnemonic (char [] buffer) { |
| int i=0, j=0; |
| int mnemonic=-1; |
| while (i < buffer.length) { |
| if ((buffer [j++] = buffer [i++]) == '&') { |
| if (i == buffer.length) {continue;} |
| if (buffer [i] == '&') {i++; continue;} |
| if (mnemonic == -1) mnemonic = j; |
| j--; |
| } |
| } |
| while (j < buffer.length) buffer [j++] = 0; |
| return mnemonic; |
| } |
| |
| /** |
| * Returns the <em>advance width</em> of the specified character in |
| * the font which is currently selected into the receiver. |
| * <p> |
| * The advance width is defined as the horizontal distance the cursor |
| * should move after printing the character in the selected font. |
| * </p> |
| * |
| * @param ch the character to measure |
| * @return the distance in the x direction to move past the character before painting the next |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getAdvanceWidth(char ch) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| //BOGUS |
| return stringExtent(new String(new char[]{ch})).x; |
| } |
| |
| /** |
| * Returns <code>true</code> if receiver is using the operating system's |
| * advanced graphics subsystem. Otherwise, <code>false</code> is returned |
| * to indicate that normal graphics are in use. |
| * <p> |
| * Advanced graphics may not be installed for the operating system. In this |
| * case, <code>false</code> is always returned. Some operating system have |
| * only one graphics subsystem. If this subsystem supports advanced graphics, |
| * then <code>true</code> is always returned. If any graphics operation such |
| * as alpha, antialias, patterns, interpolation, paths, clipping or transformation |
| * has caused the receiver to switch from regular to advanced graphics mode, |
| * <code>true</code> is returned. If the receiver has been explicitly switched |
| * to advanced mode and this mode is supported, <code>true</code> is returned. |
| * </p> |
| * |
| * @return the advanced value |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #setAdvanced |
| * |
| * @since 3.1 |
| */ |
| public boolean getAdvanced() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.cairo != 0; |
| } |
| |
| /** |
| * Returns the receiver's alpha value. The alpha value |
| * is between 0 (transparent) and 255 (opaque). |
| * |
| * @return the alpha value |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public int getAlpha() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.alpha; |
| } |
| |
| /** |
| * Returns the receiver's anti-aliasing setting value, which will be |
| * one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> or |
| * <code>SWT.ON</code>. Note that this controls anti-aliasing for all |
| * <em>non-text drawing</em> operations. |
| * |
| * @return the anti-aliasing setting |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getTextAntialias |
| * |
| * @since 3.1 |
| */ |
| public int getAntialias() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.cairo == 0) return SWT.DEFAULT; |
| int antialias = Cairo.cairo_get_antialias(data.cairo); |
| switch (antialias) { |
| case Cairo.CAIRO_ANTIALIAS_DEFAULT: return SWT.DEFAULT; |
| case Cairo.CAIRO_ANTIALIAS_NONE: return SWT.OFF; |
| case Cairo.CAIRO_ANTIALIAS_GRAY: |
| case Cairo.CAIRO_ANTIALIAS_SUBPIXEL: return SWT.ON; |
| } |
| return SWT.DEFAULT; |
| } |
| |
| /** |
| * Returns the background color. |
| * |
| * @return the receiver's background color |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Color getBackground() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return Color.gtk_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 data.backgroundPattern; |
| } |
| |
| /** |
| * Returns the width of the specified character in the font |
| * selected into the receiver. |
| * <p> |
| * The width is defined as the space taken up by the actual |
| * character, not including the leading and tailing whitespace |
| * or overhang. |
| * </p> |
| * |
| * @param ch the character to measure |
| * @return the width of the character |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public int getCharWidth(char ch) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| //BOGUS |
| return stringExtent(new String(new char[]{ch})).x; |
| } |
| |
| /** |
| * Returns the bounding rectangle of the receiver's clipping |
| * region. If no clipping region is set, the return value |
| * will be a rectangle which covers the entire bounds of the |
| * object the receiver is drawing on. |
| * |
| * @return the bounding rectangle of the clipping region |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Rectangle getClipping() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| /* Calculate visible bounds in device space */ |
| int x = 0, y = 0, width = 0, height = 0; |
| if (data.width != -1 && data.height != -1) { |
| width = data.width; |
| height = data.height; |
| } else { |
| int[] w = new int[1], h = new int[1]; |
| OS.gdk_drawable_get_size(data.drawable, w, h); |
| width = w[0]; |
| height = h[0]; |
| } |
| /* Intersect visible bounds with clipping in device space and then convert then to user space */ |
| int /*long*/ cairo = data.cairo; |
| int /*long*/ clipRgn = data.clipRgn; |
| int /*long*/ damageRgn = data.damageRgn; |
| if (clipRgn != 0 || damageRgn != 0 || cairo != 0) { |
| int /*long*/ rgn = OS.gdk_region_new(); |
| GdkRectangle rect = new GdkRectangle(); |
| rect.width = width; |
| rect.height = height; |
| OS.gdk_region_union_with_rect(rgn, rect); |
| if (damageRgn != 0) { |
| OS.gdk_region_intersect (rgn, damageRgn); |
| } |
| /* Intersect visible bounds with clipping */ |
| if (clipRgn != 0) { |
| /* Convert clipping to device space if needed */ |
| if (data.clippingTransform != null) { |
| clipRgn = convertRgn(clipRgn, data.clippingTransform); |
| OS.gdk_region_intersect(rgn, clipRgn); |
| OS.gdk_region_destroy(clipRgn); |
| } else { |
| OS.gdk_region_intersect(rgn, clipRgn); |
| } |
| } |
| /* Convert to user space */ |
| if (cairo != 0) { |
| double[] matrix = new double[6]; |
| Cairo.cairo_get_matrix(cairo, matrix); |
| Cairo.cairo_matrix_invert(matrix); |
| clipRgn = convertRgn(rgn, matrix); |
| OS.gdk_region_destroy(rgn); |
| rgn = clipRgn; |
| } |
| OS.gdk_region_get_clipbox(rgn, rect); |
| OS.gdk_region_destroy(rgn); |
| x = rect.x; |
| y = rect.y; |
| width = rect.width; |
| height = rect.height; |
| } |
| return new Rectangle(x, y, width, height); |
| } |
| |
| /** |
| * Sets the region managed by the argument to the current |
| * clipping region of the receiver. |
| * |
| * @param region the region to fill with the clipping region |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the region is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the region is disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void getClipping(Region region) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (region == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| int /*long*/ clipping = region.handle; |
| OS.gdk_region_subtract(clipping, clipping); |
| int /*long*/ cairo = data.cairo; |
| int /*long*/ clipRgn = data.clipRgn; |
| if (clipRgn == 0) { |
| GdkRectangle rect = new GdkRectangle(); |
| if (data.width != -1 && data.height != -1) { |
| rect.width = data.width; |
| rect.height = data.height; |
| } else { |
| int[] width = new int[1], height = new int[1]; |
| OS.gdk_drawable_get_size(data.drawable, width, height); |
| rect.width = width[0]; |
| rect.height = height[0]; |
| } |
| OS.gdk_region_union_with_rect(clipping, rect); |
| } else { |
| /* Convert clipping to device space if needed */ |
| if (data.clippingTransform != null) { |
| int /*long*/ rgn = convertRgn(clipRgn, data.clippingTransform); |
| OS.gdk_region_union(clipping, rgn); |
| OS.gdk_region_destroy(rgn); |
| } else { |
| OS.gdk_region_union(clipping, clipRgn); |
| } |
| } |
| if (data.damageRgn != 0) { |
| OS.gdk_region_intersect(clipping, data.damageRgn); |
| } |
| /* Convert to user space */ |
| if (cairo != 0) { |
| double[] matrix = new double[6]; |
| Cairo.cairo_get_matrix(cairo, matrix); |
| Cairo.cairo_matrix_invert(matrix); |
| int /*long*/ rgn = convertRgn(clipping, matrix); |
| OS.gdk_region_subtract(clipping, clipping); |
| OS.gdk_region_union(clipping, rgn); |
| OS.gdk_region_destroy(rgn); |
| } |
| } |
| |
| /** |
| * 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); |
| int /*long*/ cairo = data.cairo; |
| if (cairo == 0) return SWT.FILL_EVEN_ODD; |
| return Cairo.cairo_get_fill_rule(cairo) == Cairo.CAIRO_FILL_RULE_WINDING ? SWT.FILL_WINDING : SWT.FILL_EVEN_ODD; |
| } |
| |
| /** |
| * Returns the font currently being used by the receiver |
| * to draw and measure text. |
| * |
| * @return the receiver's font |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Font getFont() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return 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); |
| if (data.context == 0) createLayout(); |
| checkGC(FONT); |
| Font font = data.font; |
| int /*long*/ context = data.context; |
| int /*long*/ lang = OS.pango_context_get_language(context); |
| int /*long*/ metrics = OS.pango_context_get_metrics(context, font.handle, lang); |
| FontMetrics fm = new FontMetrics(); |
| fm.ascent = OS.PANGO_PIXELS(OS.pango_font_metrics_get_ascent(metrics)); |
| fm.descent = OS.PANGO_PIXELS(OS.pango_font_metrics_get_descent(metrics)); |
| fm.averageCharWidth = OS.PANGO_PIXELS(OS.pango_font_metrics_get_approximate_char_width(metrics)); |
| fm.height = fm.ascent + fm.descent; |
| OS.pango_font_metrics_unref(metrics); |
| return fm; |
| } |
| |
| /** |
| * 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_WIDGET_DISPOSED); |
| return Color.gtk_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 data.foregroundPattern; |
| } |
| |
| /** |
| * Returns the GCData. |
| * <p> |
| * <b>IMPORTANT:</b> This method is <em>not</em> part of the public |
| * API for <code>GC</code>. It is marked public only so that it |
| * can be shared within the packages provided by SWT. It is not |
| * available on all platforms, and should never be called from |
| * application code. |
| * </p> |
| * |
| * @return the receiver's GCData |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see GCData |
| * |
| * @since 3.2 |
| * @noreference This method is not intended to be referenced by clients. |
| */ |
| 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 data.interpolation; |
| } |
| |
| /** |
| * 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.lineDashes != null) { |
| dashes = new float[data.lineDashes.length]; |
| System.arraycopy(data.lineDashes, 0, dashes, 0, dashes.length); |
| } |
| return new LineAttributes(data.lineWidth, data.lineCap, data.lineJoin, data.lineStyle, dashes, data.lineDashesOffset, data.lineMiterLimit); |
| } |
| |
| /** |
| * Returns the receiver's line cap style, which will be one |
| * of the constants <code>SWT.CAP_FLAT</code>, <code>SWT.CAP_ROUND</code>, |
| * or <code>SWT.CAP_SQUARE</code>. |
| * |
| * @return the cap style used for drawing lines |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public int getLineCap() { |
| if (handle == 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); |
| if (data.lineDashes == null) return null; |
| int[] lineDashes = new int[data.lineDashes.length]; |
| for (int i = 0; i < lineDashes.length; i++) { |
| lineDashes[i] = (int)data.lineDashes[i]; |
| } |
| return lineDashes; |
| } |
| |
| /** |
| * Returns the receiver's line join style, which will be one |
| * of the constants <code>SWT.JOIN_MITER</code>, <code>SWT.JOIN_ROUND</code>, |
| * or <code>SWT.JOIN_BEVEL</code>. |
| * |
| * @return the join style used for drawing lines |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public int getLineJoin() { |
| if (handle == 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 (int)data.lineWidth; |
| } |
| |
| /** |
| * Returns the receiver's style information. |
| * <p> |
| * Note that the value which is returned by this method <em>may |
| * not match</em> the value which was provided to the constructor |
| * when the receiver was created. This can occur when the underlying |
| * operating system does not support a particular combination of |
| * requested styles. |
| * </p> |
| * |
| * @return the style bits |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 2.1.2 |
| */ |
| public int getStyle () { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.style; |
| } |
| |
| /** |
| * Returns the receiver's text drawing anti-aliasing setting value, |
| * which will be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> or |
| * <code>SWT.ON</code>. Note that this controls anti-aliasing |
| * <em>only</em> for text drawing operations. |
| * |
| * @return the anti-aliasing setting |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #getAntialias |
| * |
| * @since 3.1 |
| */ |
| public int getTextAntialias() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.cairo == 0) return SWT.DEFAULT; |
| int antialias = Cairo.CAIRO_ANTIALIAS_DEFAULT; |
| if (OS.GTK_VERSION < OS.VERSION(2, 8, 0)) { |
| int /*long*/ options = Cairo.cairo_font_options_create(); |
| Cairo.cairo_get_font_options(data.cairo, options); |
| antialias = Cairo.cairo_font_options_get_antialias(options); |
| Cairo.cairo_font_options_destroy(options); |
| } else { |
| if (data.context != 0) { |
| int /*long*/ options = OS.pango_cairo_context_get_font_options(data.context); |
| if (options != 0) antialias = Cairo.cairo_font_options_get_antialias(options); |
| } |
| } |
| switch (antialias) { |
| case Cairo.CAIRO_ANTIALIAS_DEFAULT: return SWT.DEFAULT; |
| case Cairo.CAIRO_ANTIALIAS_NONE: return SWT.OFF; |
| case Cairo.CAIRO_ANTIALIAS_GRAY: |
| case Cairo.CAIRO_ANTIALIAS_SUBPIXEL: return SWT.ON; |
| } |
| return SWT.DEFAULT; |
| } |
| |
| /** |
| * Sets the parameter to the transform that is currently being |
| * used by the receiver. |
| * |
| * @param transform the destination to copy the transform into |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see Transform |
| * |
| * @since 3.1 |
| */ |
| public void getTransform(Transform transform) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (transform == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_get_matrix(cairo, transform.handle); |
| double[] identity = identity(); |
| Cairo.cairo_matrix_invert(identity); |
| Cairo.cairo_matrix_multiply(transform.handle, transform.handle, identity); |
| } else { |
| transform.setElements(1, 0, 0, 1, 0, 0); |
| } |
| } |
| |
| /** |
| * Returns <code>true</code> if this GC is drawing in the mode |
| * where the resulting color in the destination is the |
| * <em>exclusive or</em> of the color values in the source |
| * and the destination, and <code>false</code> if it is |
| * drawing in the mode where the destination color is being |
| * replaced with the source color value. |
| * |
| * @return <code>true</code> true if the receiver is in XOR mode, and false otherwise |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public boolean getXORMode() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| 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 (int)/*64*/handle; |
| } |
| |
| double[] identity() { |
| double[] identity = new double[6]; |
| if ((data.style & SWT.MIRRORED) != 0) { |
| int[] w = new int[1], h = new int[1]; |
| OS.gdk_drawable_get_size(data.drawable, w, h); |
| Cairo.cairo_matrix_init(identity, -1, 0, 0, 1, w[0], 0); |
| } else { |
| Cairo.cairo_matrix_init_identity(identity); |
| } |
| return identity; |
| } |
| |
| void init(Drawable drawable, GCData data, int /*long*/ gdkGC) { |
| if (data.foreground != null) data.state &= ~FOREGROUND; |
| if (data.background != null) data.state &= ~(BACKGROUND | BACKGROUND_BG); |
| if (data.font != null) data.state &= ~FONT; |
| |
| Image image = data.image; |
| if (image != null) { |
| image.memGC = this; |
| /* |
| * The transparent pixel mask might change when drawing on |
| * the image. Destroy it so that it is regenerated when |
| * necessary. |
| */ |
| if (image.transparentPixel != -1) image.destroyMask(); |
| } |
| this.drawable = drawable; |
| this.data = data; |
| handle = gdkGC; |
| if ((data.style & SWT.MIRRORED) != 0) { |
| initCairo(); |
| int /*long*/ cairo = data.cairo; |
| Cairo.cairo_set_matrix(cairo, identity()); |
| } |
| } |
| |
| void initCairo() { |
| data.device.checkCairo(); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) return; |
| int /*long*/ xDisplay = OS.GDK_DISPLAY(); |
| int /*long*/ xVisual = OS.gdk_x11_visual_get_xvisual(OS.gdk_visual_get_system()); |
| int /*long*/ xDrawable = 0; |
| int translateX = 0, translateY = 0; |
| int /*long*/ drawable = data.drawable; |
| if (data.image != null) { |
| xDrawable = OS.GDK_PIXMAP_XID(drawable); |
| } else { |
| if (!data.realDrawable) { |
| int[] x = new int[1], y = new int[1]; |
| int /*long*/ [] real_drawable = new int /*long*/ [1]; |
| OS.gdk_window_get_internal_paint_info(drawable, real_drawable, x, y); |
| xDrawable = OS.gdk_x11_drawable_get_xid(real_drawable[0]); |
| translateX = -x[0]; |
| translateY = -y[0]; |
| } |
| } |
| int[] w = new int[1], h = new int[1]; |
| OS.gdk_drawable_get_size(drawable, w, h); |
| int width = w[0], height = h[0]; |
| int /*long*/ surface = Cairo.cairo_xlib_surface_create(xDisplay, xDrawable, xVisual, width, height); |
| if (surface == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_surface_set_device_offset(surface, translateX, translateY); |
| data.cairo = cairo = Cairo.cairo_create(surface); |
| Cairo.cairo_surface_destroy(surface); |
| if (cairo == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| data.disposeCairo = true; |
| Cairo.cairo_set_fill_rule(cairo, Cairo.CAIRO_FILL_RULE_EVEN_ODD); |
| data.state &= ~(BACKGROUND | FOREGROUND | FONT | LINE_WIDTH | LINE_CAP | LINE_JOIN | LINE_STYLE | DRAW_OFFSET); |
| setCairoClip(data.damageRgn, data.clipRgn); |
| } |
| |
| void computeStringSize() { |
| int[] width = new int[1], height = new int[1]; |
| OS.pango_layout_get_size(data.layout, width, height); |
| data.stringHeight = OS.PANGO_PIXELS(height[0]); |
| data.stringWidth = OS.PANGO_PIXELS(width[0]); |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver has a clipping |
| * region set into it, and <code>false</code> otherwise. |
| * If this method returns false, the receiver will draw on all |
| * available space in the destination. If it returns true, |
| * it will draw only in the area that is covered by the region |
| * that can be accessed with <code>getClipping(region)</code>. |
| * |
| * @return <code>true</code> if the GC has a clipping region, and <code>false</code> otherwise |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public boolean isClipped() { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| return data.clipRgn != 0; |
| } |
| |
| /** |
| * Returns <code>true</code> if the GC has been disposed, |
| * and <code>false</code> otherwise. |
| * <p> |
| * This method gets the dispose state for the GC. |
| * When a GC has been disposed, it is an error to |
| * invoke any other method using the GC. |
| * |
| * @return <code>true</code> when the GC is disposed and <code>false</code> otherwise |
| */ |
| public boolean isDisposed() { |
| return handle == 0; |
| } |
| |
| boolean isIdentity(double[] matrix) { |
| if (matrix == null) return true; |
| return matrix[0] == 1 && matrix[1] == 0 && matrix[2] == 0 && matrix[3] == 1 && matrix[4] == 0 && matrix[5] == 0; |
| } |
| |
| /** |
| * Sets the receiver to always use the operating system's advanced graphics |
| * subsystem for all graphics operations if the argument is <code>true</code>. |
| * If the argument is <code>false</code>, the advanced graphics subsystem is |
| * no longer used, advanced graphics state is cleared and the normal graphics |
| * subsystem is used from now on. |
| * <p> |
| * Normally, the advanced graphics subsystem is invoked automatically when |
| * any one of the alpha, antialias, patterns, interpolation, paths, clipping |
| * or transformation operations in the receiver is requested. When the receiver |
| * is switched into advanced mode, the advanced graphics subsystem performs both |
| * advanced and normal graphics operations. Because the two subsystems are |
| * different, their output may differ. Switching to advanced graphics before |
| * any graphics operations are performed ensures that the output is consistent. |
| * </p><p> |
| * Advanced graphics may not be installed for the operating system. In this |
| * case, this operation does nothing. Some operating system have only one |
| * graphics subsystem, so switching from normal to advanced graphics does |
| * nothing. However, switching from advanced to normal graphics will always |
| * clear the advanced graphics state, even for operating systems that have |
| * only one graphics subsystem. |
| * </p> |
| * |
| * @param advanced the new advanced graphics state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see #setAlpha |
| * @see #setAntialias |
| * @see #setBackgroundPattern |
| * @see #setClipping(Path) |
| * @see #setForegroundPattern |
| * @see #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 ((data.style & SWT.MIRRORED) != 0) { |
| if (!advanced) { |
| setAlpha(0xFF); |
| setAntialias(SWT.DEFAULT); |
| setBackgroundPattern(null); |
| setClipping(0); |
| setForegroundPattern(null); |
| setInterpolation(SWT.DEFAULT); |
| setTextAntialias(SWT.DEFAULT); |
| setTransform(null); |
| } |
| return; |
| } |
| if (advanced && data.cairo != 0) return; |
| if (advanced) { |
| try { |
| initCairo(); |
| } catch (SWTException e) {} |
| } else { |
| if (!data.disposeCairo) return; |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) Cairo.cairo_destroy(cairo); |
| data.cairo = 0; |
| data.interpolation = SWT.DEFAULT; |
| data.alpha = 0xFF; |
| data.backgroundPattern = data.foregroundPattern = null; |
| data.state = 0; |
| setClipping(0); |
| } |
| } |
| |
| /** |
| * Sets the receiver's alpha value which must be |
| * between 0 (transparent) and 255 (opaque). |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * @param alpha the alpha value |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * |
| * @see #getAdvanced |
| * @see #setAdvanced |
| * |
| * @since 3.1 |
| */ |
| public void setAlpha(int alpha) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.cairo == 0 && (alpha & 0xff) == 0xff) return; |
| initCairo(); |
| data.alpha = alpha & 0xff; |
| data.state &= ~(BACKGROUND | FOREGROUND | BACKGROUND_BG); |
| } |
| |
| /** |
| * 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); |
| if (data.cairo == 0 && antialias == SWT.DEFAULT) return; |
| int mode = 0; |
| switch (antialias) { |
| case SWT.DEFAULT: mode = Cairo.CAIRO_ANTIALIAS_DEFAULT; break; |
| case SWT.OFF: mode = Cairo.CAIRO_ANTIALIAS_NONE; break; |
| case SWT.ON: mode = Cairo.CAIRO_ANTIALIAS_GRAY; |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| initCairo(); |
| int /*long*/ cairo = data.cairo; |
| Cairo.cairo_set_antialias(cairo, mode); |
| } |
| |
| /** |
| * 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; |
| data.backgroundPattern = null; |
| data.state &= ~(BACKGROUND | BACKGROUND_BG); |
| } |
| |
| /** |
| * 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 && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (data.cairo == 0 && pattern == null) return; |
| initCairo(); |
| if (data.backgroundPattern == pattern) return; |
| data.backgroundPattern = pattern; |
| data.state &= ~BACKGROUND; |
| } |
| |
| static void setCairoFont(int /*long*/ cairo, Font font) { |
| setCairoFont(cairo, font.handle); |
| } |
| |
| static void setCairoFont(int /*long*/ cairo, int /*long*/ font) { |
| int /*long*/ family = OS.pango_font_description_get_family(font); |
| int length = OS.strlen(family); |
| byte[] buffer = new byte[length + 1]; |
| OS.memmove(buffer, family, length); |
| //TODO - convert font height from pango to cairo |
| double height = OS.PANGO_PIXELS(OS.pango_font_description_get_size(font)) * 96 / 72; |
| int pangoStyle = OS.pango_font_description_get_style(font); |
| int pangoWeight = OS.pango_font_description_get_weight(font); |
| int slant = Cairo.CAIRO_FONT_SLANT_NORMAL; |
| if (pangoStyle == OS.PANGO_STYLE_ITALIC) slant = Cairo.CAIRO_FONT_SLANT_ITALIC; |
| if (pangoStyle == OS.PANGO_STYLE_OBLIQUE) slant = Cairo.CAIRO_FONT_SLANT_OBLIQUE; |
| int weight = Cairo.CAIRO_FONT_WEIGHT_NORMAL; |
| if (pangoWeight == OS.PANGO_WEIGHT_BOLD) weight = Cairo.CAIRO_FONT_WEIGHT_BOLD; |
| Cairo.cairo_select_font_face(cairo, buffer, slant, weight); |
| Cairo.cairo_set_font_size(cairo, height); |
| } |
| |
| static void setCairoRegion(int /*long*/ cairo, int /*long*/ rgn) { |
| if (OS.GTK_VERSION >= OS.VERSION(2, 8, 0)) { |
| OS.gdk_cairo_region(cairo, rgn); |
| } else { |
| int[] nRects = new int[1]; |
| int /*long*/[] rects = new int /*long*/[1]; |
| OS.gdk_region_get_rectangles(rgn, rects, nRects); |
| GdkRectangle rect = new GdkRectangle(); |
| for (int i=0; i<nRects[0]; i++) { |
| OS.memmove(rect, rects[0] + (i * GdkRectangle.sizeof), GdkRectangle.sizeof); |
| Cairo.cairo_rectangle(cairo, rect.x, rect.y, rect.width, rect.height); |
| } |
| if (rects[0] != 0) OS.g_free(rects[0]); |
| } |
| } |
| |
| static void setCairoPatternColor(int /*long*/ pattern, int offset, Color c, int alpha) { |
| GdkColor color = c.handle; |
| double aa = (alpha & 0xFF) / (double)0xFF; |
| double red = ((color.red & 0xFFFF) / (double)0xFFFF); |
| double green = ((color.green & 0xFFFF) / (double)0xFFFF); |
| double blue = ((color.blue & 0xFFFF) / (double)0xFFFF); |
| Cairo.cairo_pattern_add_color_stop_rgba(pattern, offset, red, green, blue, aa); |
| } |
| |
| void setCairoClip(int /*long*/ damageRgn, int /*long*/ clipRgn) { |
| int /*long*/ cairo = data.cairo; |
| Cairo.cairo_reset_clip(cairo); |
| if (damageRgn != 0) { |
| double[] matrix = new double[6]; |
| Cairo.cairo_get_matrix(cairo, matrix); |
| double[] identity = new double[6]; |
| Cairo.cairo_matrix_init_identity(identity); |
| Cairo.cairo_set_matrix(cairo, identity); |
| setCairoRegion(cairo, damageRgn); |
| Cairo.cairo_clip(cairo); |
| Cairo.cairo_set_matrix(cairo, matrix); |
| } |
| if (clipRgn != 0) { |
| setCairoRegion(cairo, clipRgn); |
| Cairo.cairo_clip(cairo); |
| } |
| } |
| |
| void setClipping(int /*long*/ clipRgn) { |
| int /*long*/ cairo = data.cairo; |
| if (clipRgn == 0) { |
| if (data.clipRgn != 0) { |
| OS.gdk_region_destroy(data.clipRgn); |
| data.clipRgn = 0; |
| } |
| if (cairo != 0) { |
| data.clippingTransform = null; |
| setCairoClip(data.damageRgn, 0); |
| } else { |
| int /*long*/ clipping = data.damageRgn != 0 ? data.damageRgn : 0; |
| OS.gdk_gc_set_clip_region(handle, clipping); |
| } |
| } else { |
| if (data.clipRgn == 0) data.clipRgn = OS.gdk_region_new(); |
| OS.gdk_region_subtract(data.clipRgn, data.clipRgn); |
| OS.gdk_region_union(data.clipRgn, clipRgn); |
| if (cairo != 0) { |
| if (data.clippingTransform == null) data.clippingTransform = new double[6]; |
| Cairo.cairo_get_matrix(cairo, data.clippingTransform); |
| setCairoClip(data.damageRgn, clipRgn); |
| } else { |
| int /*long*/ clipping = clipRgn; |
| if (data.damageRgn != 0) { |
| clipping = OS.gdk_region_new(); |
| OS.gdk_region_union(clipping, clipRgn); |
| OS.gdk_region_intersect(clipping, data.damageRgn); |
| } |
| OS.gdk_gc_set_clip_region(handle, clipping); |
| if (clipping != clipRgn) OS.gdk_region_destroy(clipping); |
| } |
| } |
| } |
| |
| /** |
| * 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; |
| } |
| GdkRectangle rect = new GdkRectangle(); |
| rect.x = x; |
| rect.y = y; |
| rect.width = width; |
| rect.height = height; |
| int /*long*/ clipRgn = OS.gdk_region_new(); |
| OS.gdk_region_union_with_rect(clipRgn, rect); |
| setClipping(clipRgn); |
| OS.gdk_region_destroy(clipRgn); |
| } |
| |
| /** |
| * 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); |
| setClipping(0); |
| if (path != null) { |
| initCairo(); |
| int /*long*/ cairo = data.cairo; |
| int /*long*/ copy = Cairo.cairo_copy_path(path.handle); |
| if (copy == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_append_path(cairo, copy); |
| Cairo.cairo_path_destroy(copy); |
| Cairo.cairo_clip(cairo); |
| } |
| } |
| |
| /** |
| * Sets the area of the receiver which can be changed |
| * by drawing operations to the rectangular area specified |
| * by the argument. Specifying <code>null</code> for the |
| * rectangle reverts the receiver's clipping area to its |
| * original value. |
| * |
| * @param rect the clipping rectangle or <code>null</code> |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setClipping(Rectangle rect) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (rect == null) { |
| setClipping(0); |
| } else { |
| setClipping(rect.x, rect.y, rect.width, rect.height); |
| } |
| } |
| /** |
| * Sets the area of the receiver which can be changed |
| * by drawing operations to the region specified |
| * by the argument. Specifying <code>null</code> for the |
| * region reverts the receiver's clipping area to its |
| * original value. |
| * |
| * @param region the clipping region or <code>null</code> |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the region has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setClipping(Region region) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (region != null && region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| setClipping(region != null ? region.handle : 0); |
| } |
| |
| /** |
| * Sets the 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 ? font : data.device.systemFont; |
| data.state &= ~FONT; |
| data.stringWidth = data.stringHeight = -1; |
| } |
| |
| /** |
| * Sets the receiver's fill rule to the parameter, which must be one of |
| * <code>SWT.FILL_EVEN_ODD</code> or <code>SWT.FILL_WINDING</code>. |
| * |
| * @param rule the new fill rule |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the rule is not one of <code>SWT.FILL_EVEN_ODD</code> |
| * or <code>SWT.FILL_WINDING</code></li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public void setFillRule(int rule) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int cairo_mode = Cairo.CAIRO_FILL_RULE_EVEN_ODD; |
| switch (rule) { |
| case SWT.FILL_WINDING: |
| cairo_mode = Cairo.CAIRO_FILL_RULE_WINDING; break; |
| case SWT.FILL_EVEN_ODD: |
| cairo_mode = Cairo.CAIRO_FILL_RULE_EVEN_ODD; break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| //TODO - need fill rule in X, GDK has no API |
| initCairo(); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_set_fill_rule(cairo, cairo_mode); |
| } |
| } |
| |
| /** |
| * 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; |
| data.foregroundPattern = null; |
| data.state &= ~FOREGROUND; |
| } |
| |
| /** |
| * 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 && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (data.cairo == 0 && pattern == null) return; |
| initCairo(); |
| if (data.foregroundPattern == pattern) return; |
| data.foregroundPattern = pattern; |
| data.state &= ~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); |
| if (data.cairo == 0 && interpolation == SWT.DEFAULT) return; |
| switch (interpolation) { |
| case SWT.DEFAULT: |
| case SWT.NONE: |
| case SWT.LOW: |
| case SWT.HIGH: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| initCairo(); |
| data.interpolation = interpolation; |
| } |
| |
| /** |
| * Sets the receiver's line 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); |
| int mask = 0; |
| float lineWidth = attributes.width; |
| if (lineWidth != data.lineWidth) { |
| mask |= LINE_WIDTH | DRAW_OFFSET; |
| } |
| int lineStyle = attributes.style; |
| if (lineStyle != data.lineStyle) { |
| mask |= LINE_STYLE; |
| switch (lineStyle) { |
| case SWT.LINE_SOLID: |
| case SWT.LINE_DASH: |
| case SWT.LINE_DOT: |
| case SWT.LINE_DASHDOT: |
| case SWT.LINE_DASHDOTDOT: |
| break; |
| case SWT.LINE_CUSTOM: |
| if (attributes.dash == null) lineStyle = SWT.LINE_SOLID; |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| int join = attributes.join; |
| if (join != data.lineJoin) { |
| mask |= LINE_JOIN; |
| switch (join) { |
| case SWT.CAP_ROUND: |
| case SWT.CAP_FLAT: |
| case SWT.CAP_SQUARE: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| int cap = attributes.cap; |
| if (cap != data.lineCap) { |
| mask |= LINE_CAP; |
| switch (cap) { |
| case SWT.JOIN_MITER: |
| case SWT.JOIN_ROUND: |
| case SWT.JOIN_BEVEL: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| float[] dashes = attributes.dash; |
| float[] lineDashes = data.lineDashes; |
| if (dashes != null && dashes.length > 0) { |
| boolean changed = lineDashes == null || lineDashes.length != dashes.length; |
| for (int i = 0; i < dashes.length; i++) { |
| float dash = dashes[i]; |
| if (dash <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (!changed && lineDashes[i] != dash) changed = true; |
| } |
| if (changed) { |
| float[] newDashes = new float[dashes.length]; |
| System.arraycopy(dashes, 0, newDashes, 0, dashes.length); |
| dashes = newDashes; |
| mask |= LINE_STYLE; |
| } else { |
| dashes = lineDashes; |
| } |
| } else { |
| if (lineDashes != null && lineDashes.length > 0) { |
| mask |= LINE_STYLE; |
| } else { |
| dashes = lineDashes; |
| } |
| } |
| float dashOffset = attributes.dashOffset; |
| if (dashOffset != data.lineDashesOffset) { |
| mask |= LINE_STYLE; |
| } |
| float miterLimit = attributes.miterLimit; |
| if (miterLimit != data.lineMiterLimit) { |
| mask |= LINE_MITERLIMIT; |
| } |
| initCairo(); |
| if (mask == 0) return; |
| data.lineWidth = lineWidth; |
| data.lineStyle = lineStyle; |
| data.lineCap = cap; |
| data.lineJoin = join; |
| data.lineDashes = dashes; |
| data.lineDashesOffset = dashOffset; |
| data.lineMiterLimit = miterLimit; |
| data.state &= ~mask; |
| } |
| |
| /** |
| * Sets the receiver's line cap style to the argument, which must be one |
| * of the constants <code>SWT.CAP_FLAT</code>, <code>SWT.CAP_ROUND</code>, |
| * or <code>SWT.CAP_SQUARE</code>. |
| * |
| * @param cap the cap style to be used for drawing lines |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public void setLineCap(int cap) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.lineCap == cap) return; |
| switch (cap) { |
| case SWT.CAP_ROUND: |
| case SWT.CAP_FLAT: |
| case SWT.CAP_SQUARE: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| data.lineCap = cap; |
| data.state &= ~LINE_CAP; |
| } |
| |
| /** |
| * Sets the receiver's line dash style to the argument. The default |
| * value is <code>null</code>. If the argument is not <code>null</code>, |
| * the receiver's line style is set to <code>SWT.LINE_CUSTOM</code>, otherwise |
| * it is set to <code>SWT.LINE_SOLID</code>. |
| * |
| * @param dashes the dash style to be used for drawing lines |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if any of the values in the array is less than or equal 0</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public void setLineDash(int[] dashes) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| float[] lineDashes = data.lineDashes; |
| if (dashes != null && dashes.length > 0) { |
| boolean changed = data.lineStyle != SWT.LINE_CUSTOM || lineDashes == null || lineDashes.length != dashes.length; |
| for (int i = 0; i < dashes.length; i++) { |
| int dash = dashes[i]; |
| if (dash <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| if (!changed && lineDashes[i] != dash) changed = true; |
| } |
| if (!changed) return; |
| data.lineDashes = new float[dashes.length]; |
| for (int i = 0; i < dashes.length; i++) { |
| data.lineDashes[i] = dashes[i]; |
| } |
| data.lineStyle = SWT.LINE_CUSTOM; |
| } else { |
| if (data.lineStyle == SWT.LINE_SOLID && (lineDashes == null || lineDashes.length == 0)) return; |
| data.lineDashes = null; |
| data.lineStyle = SWT.LINE_SOLID; |
| } |
| data.state &= ~LINE_STYLE; |
| } |
| |
| /** |
| * Sets the receiver's line join style to the argument, which must be one |
| * of the constants <code>SWT.JOIN_MITER</code>, <code>SWT.JOIN_ROUND</code>, |
| * or <code>SWT.JOIN_BEVEL</code>. |
| * |
| * @param join the join style to be used for drawing lines |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @since 3.1 |
| */ |
| public void setLineJoin(int join) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.lineJoin == join) return; |
| switch (join) { |
| case SWT.JOIN_MITER: |
| case SWT.JOIN_ROUND: |
| case SWT.JOIN_BEVEL: |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| data.lineJoin = join; |
| data.state &= ~LINE_JOIN; |
| } |
| |
| /** |
| * Sets the receiver's line style to the argument, which must be one |
| * of the constants <code>SWT.LINE_SOLID</code>, <code>SWT.LINE_DASH</code>, |
| * <code>SWT.LINE_DOT</code>, <code>SWT.LINE_DASHDOT</code> or |
| * <code>SWT.LINE_DASHDOTDOT</code>. |
| * |
| * @param lineStyle the style to be used for drawing lines |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void setLineStyle(int lineStyle) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (data.lineStyle == lineStyle) return; |
| switch (lineStyle) { |
| case SWT.LINE_SOLID: |
| case SWT.LINE_DASH: |
| case SWT.LINE_DOT: |
| case SWT.LINE_DASHDOT: |
| case SWT.LINE_DASHDOTDOT: |
| break; |
| case SWT.LINE_CUSTOM: |
| if (data.lineDashes == null) lineStyle = SWT.LINE_SOLID; |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| data.lineStyle = lineStyle; |
| data.state &= ~LINE_STYLE; |
| } |
| |
| /** |
| * Sets the width that will be used when drawing lines |
| * for all of the figure drawing operations (that is, |
| * <code>drawLine</code>, <code>drawRectangle</code>, |
| * <code>drawPolyline</code>, and so forth. |
| * <p> |
| * Note that line width of zero is used as a hint to |
| * indicate that the fastest possible line drawing |
| * algorithms should be used. This means that the |
| * output may be different from line width one. |
| * </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); |
| if (data.lineWidth == lineWidth) return; |
| data.lineWidth = lineWidth; |
| data.state &= ~(LINE_WIDTH | DRAW_OFFSET); |
| } |
| |
| void setString(String string, int flags) { |
| if (data.layout == 0) createLayout(); |
| if (string == data.string && (flags & ~SWT.DRAW_TRANSPARENT) == (data.drawFlags & ~SWT.DRAW_TRANSPARENT)) { |
| return; |
| } |
| byte[] buffer; |
| int mnemonic, length = string.length (); |
| int /*long*/ layout = data.layout; |
| char[] text = new char[length]; |
| string.getChars(0, length, text, 0); |
| if ((flags & SWT.DRAW_MNEMONIC) != 0 && (mnemonic = fixMnemonic(text)) != -1) { |
| char[] text1 = new char[mnemonic - 1]; |
| System.arraycopy(text, 0, text1, 0, text1.length); |
| byte[] buffer1 = Converter.wcsToMbcs(null, text1, false); |
| char[] text2 = new char[text.length - mnemonic]; |
| System.arraycopy(text, mnemonic - 1, text2, 0, text2.length); |
| byte[] buffer2 = Converter.wcsToMbcs(null, text2, false); |
| buffer = new byte[buffer1.length + buffer2.length]; |
| System.arraycopy(buffer1, 0, buffer, 0, buffer1.length); |
| System.arraycopy(buffer2, 0, buffer, buffer1.length, buffer2.length); |
| int /*long*/ attr_list = OS.pango_attr_list_new(); |
| int /*long*/ attr = OS.pango_attr_underline_new(OS.PANGO_UNDERLINE_LOW); |
| PangoAttribute attribute = new PangoAttribute(); |
| OS.memmove(attribute, attr, PangoAttribute.sizeof); |
| attribute.start_index = buffer1.length; |
| attribute.end_index = buffer1.length + 1; |
| OS.memmove(attr, attribute, PangoAttribute.sizeof); |
| OS.pango_attr_list_insert(attr_list, attr); |
| OS.pango_layout_set_attributes(layout, attr_list); |
| OS.pango_attr_list_unref(attr_list); |
| } else { |
| buffer = Converter.wcsToMbcs(null, text, false); |
| OS.pango_layout_set_attributes(layout, 0); |
| } |
| OS.pango_layout_set_text(layout, buffer, buffer.length); |
| OS.pango_layout_set_single_paragraph_mode(layout, (flags & SWT.DRAW_DELIMITER) == 0); |
| OS.pango_layout_set_tabs(layout, (flags & SWT.DRAW_TAB) != 0 ? 0 : data.device.emptyTab); |
| data.string = string; |
| data.stringWidth = data.stringHeight = -1; |
| data.drawFlags = flags; |
| } |
| |
| /** |
| * Sets the receiver's text anti-aliasing value to the parameter, |
| * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> |
| * or <code>SWT.ON</code>. Note that this controls anti-aliasing only |
| * for all <em>text drawing</em> operations. |
| * <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); |
| if (data.cairo == 0 && antialias == SWT.DEFAULT) return; |
| int mode = 0; |
| switch (antialias) { |
| case SWT.DEFAULT: mode = Cairo.CAIRO_ANTIALIAS_DEFAULT; break; |
| case SWT.OFF: mode = Cairo.CAIRO_ANTIALIAS_NONE; break; |
| case SWT.ON: mode = Cairo.CAIRO_ANTIALIAS_GRAY; |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| initCairo(); |
| int /*long*/ options = Cairo.cairo_font_options_create(); |
| Cairo.cairo_font_options_set_antialias(options, mode); |
| if (OS.GTK_VERSION < OS.VERSION(2, 8, 0)) { |
| Cairo.cairo_set_font_options(data.cairo, options); |
| } else { |
| if (data.context == 0) createLayout(); |
| OS.pango_cairo_context_set_font_options(data.context, options); |
| } |
| Cairo.cairo_font_options_destroy(options); |
| } |
| |
| /** |
| * Sets the transform that is currently being used by the receiver. If |
| * the argument is <code>null</code>, the current transform is set to |
| * the identity transform. |
| * <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 (data.cairo == 0 && transform == null) return; |
| initCairo(); |
| int /*long*/ cairo = data.cairo; |
| double[] identity = identity(); |
| if (transform != null) { |
| Cairo.cairo_matrix_multiply(identity, transform.handle, identity); |
| } |
| Cairo.cairo_set_matrix(cairo, identity); |
| data.state &= ~DRAW_OFFSET; |
| } |
| |
| /** |
| * If the argument is <code>true</code>, puts the receiver |
| * in a drawing mode where the resulting color in the destination |
| * is the <em>exclusive or</em> of the color values in the source |
| * and the destination, and if the argument is <code>false</code>, |
| * puts the receiver in a drawing mode where the destination color |
| * is replaced with the source color value. |
| * <p> |
| * Note that this mode in fundamentally unsupportable on certain |
| * platforms, notably Carbon (Mac OS X). Clients that want their |
| * code to run on all platforms need to avoid this method. |
| * </p> |
| * |
| * @param xor if <code>true</code>, then <em>xor</em> mode is used, otherwise <em>source copy</em> mode is used |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @deprecated this functionality is not supported on some platforms |
| */ |
| public void setXORMode(boolean xor) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| OS.gdk_gc_set_function(handle, xor ? OS.GDK_XOR : OS.GDK_COPY); |
| data.xorMode = xor; |
| } |
| |
| /** |
| * Returns the extent of the given string. No tab |
| * expansion or carriage return processing will be performed. |
| * <p> |
| * The <em>extent</em> of a string is the width and height of |
| * the rectangular area it would cover if drawn in a particular |
| * font (in this case, the current font in the receiver). |
| * </p> |
| * |
| * @param string the string to measure |
| * @return a point containing the extent of the string |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Point stringExtent(String string) { |
| return textExtent(string, 0); |
| } |
| |
| /** |
| * Returns the extent of the given string. Tab expansion and |
| * carriage return processing are performed. |
| * <p> |
| * The <em>extent</em> of a string is the width and height of |
| * the rectangular area it would cover if drawn in a particular |
| * font (in this case, the current font in the receiver). |
| * </p> |
| * |
| * @param string the string to measure |
| * @return a point containing the extent of the string |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Point textExtent(String string) { |
| return textExtent(string, SWT.DRAW_DELIMITER | SWT.DRAW_TAB); |
| } |
| |
| /** |
| * Returns the extent of the given string. Tab expansion, line |
| * delimiter and mnemonic processing are performed according to |
| * the specified flags, which can be a combination of: |
| * <dl> |
| * <dt><b>DRAW_DELIMITER</b></dt> |
| * <dd>draw multiple lines</dd> |
| * <dt><b>DRAW_TAB</b></dt> |
| * <dd>expand tabs</dd> |
| * <dt><b>DRAW_MNEMONIC</b></dt> |
| * <dd>underline the mnemonic character</dd> |
| * <dt><b>DRAW_TRANSPARENT</b></dt> |
| * <dd>transparent background</dd> |
| * </dl> |
| * <p> |
| * The <em>extent</em> of a string is the width and height of |
| * the rectangular area it would cover if drawn in a particular |
| * font (in this case, the current font in the receiver). |
| * </p> |
| * |
| * @param string the string to measure |
| * @param flags the flags specifying how to process the text |
| * @return a point containing the extent of the string |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public Point textExtent(String string, int flags) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| if (OS.GTK_VERSION < OS.VERSION(2, 8, 0)) { |
| //TODO - honor flags |
| checkGC(FONT); |
| byte[] buffer = Converter.wcsToMbcs(null, string, true); |
| cairo_font_extents_t font_extents = new cairo_font_extents_t(); |
| Cairo.cairo_font_extents(cairo, font_extents); |
| cairo_text_extents_t extents = new cairo_text_extents_t(); |
| Cairo.cairo_text_extents(cairo, buffer, extents); |
| return new Point((int)extents.width, (int)font_extents.height); |
| } |
| } |
| setString(string, flags); |
| checkGC(FONT); |
| if (data.stringWidth == -1) { |
| computeStringSize(); |
| } |
| return new Point(data.stringWidth, data.stringHeight); |
| } |
| |
| /** |
| * 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 + "}"; |
| } |
| |
| } |
