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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/GC.java')
| -rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/GC.java | 3112 |
1 files changed, 0 insertions, 3112 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/GC.java b/bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/GC.java deleted file mode 100644 index dae4748e16..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/GC.java +++ /dev/null @@ -1,3112 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2009 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.wpf.*; -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 handle; - - Drawable drawable; - GCData data; - - static final int FOREGROUND = 1 << 0; - static final int BACKGROUND = 1 << 1; - static final int FONT = 1 << 2; - static final int LINE_STYLE = 1 << 3; - static final int LINE_WIDTH = 1 << 4; - static final int LINE_CAP = 1 << 5; - static final int LINE_JOIN = 1 << 6; - static final int LINE_MITERLIMIT = 1 << 7; - static final int ALPHA = 1 << 8; - static final int CLIPPING = 1 << 9; - static final int TRANSFORM = 1 << 10; - - static final int DRAW = FOREGROUND | LINE_STYLE | LINE_WIDTH | LINE_CAP | LINE_JOIN | ALPHA | CLIPPING | TRANSFORM; - static final int FILL = BACKGROUND | ALPHA | CLIPPING | TRANSFORM; - static final int IMAGE = ALPHA | CLIPPING | TRANSFORM; - - static final double[] LINE_DOT_ZERO = new double[]{3, 3}; - static final double[] LINE_DASH_ZERO = new double[]{18, 6}; - static final double[] LINE_DASHDOT_ZERO = new double[]{9, 6, 3, 6}; - static final double[] LINE_DASHDOTDOT_ZERO = new double[]{9, 3, 3, 3, 3, 3}; - -/** - * Prevents uninitialized instances from being created outside the package. - */ -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, SWT.NONE); -} - -/** - * 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 hDC = drawable.internal_new_GC(data); - Device device = data.device; - if (device == null) device = Device.getDevice(); - if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - this.device = data.device = device; - init (drawable, data, hDC); - init(); -} - -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); -} - -void checkGC(int mask) { - int state = data.state; - if ((state & mask) == mask) return; - state = (state ^ mask) & mask; - data.state |= mask; - if ((state & (FOREGROUND | LINE_WIDTH | LINE_STYLE | LINE_JOIN | LINE_CAP | LINE_MITERLIMIT)) != 0) { - int pen = data.pen; - if (pen != 0) OS.GCHandle_Free(pen); - pen = data.pen = OS.gcnew_Pen(); - int brush; - Pattern pattern = data.foregroundPattern; - if (pattern != null) { - brush = pattern.handle; - } else { - int foreground = data.foreground; - brush = OS.gcnew_SolidColorBrush(foreground); - if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES); - } - OS.Pen_Brush(pen, brush); - if (pattern == null) OS.GCHandle_Free(brush); - float width = data.lineWidth; - OS.Pen_Thickness(pen, width == 0 ? 1 : width); - double[] dashes = null; - int dashStyle = 0; - switch (data.lineStyle) { - case SWT.LINE_SOLID: dashStyle = OS.DashStyles_Solid(); break; - case SWT.LINE_DOT: if (width == 0) dashes = LINE_DOT_ZERO; else dashStyle = OS.DashStyles_Dot(); break; - case SWT.LINE_DASH: if (width == 0) dashes = LINE_DASH_ZERO; else dashStyle = OS.DashStyles_Dash(); break; - case SWT.LINE_DASHDOT: if (width == 0) dashes = LINE_DASHDOT_ZERO; else dashStyle = OS.DashStyles_DashDot(); break; - case SWT.LINE_DASHDOTDOT: if (width == 0) dashes = LINE_DASHDOTDOT_ZERO; else dashStyle = OS.DashStyles_DashDotDot(); break; - case SWT.LINE_CUSTOM: { - if (data.lineDashes != null) { - dashes = new double[data.lineDashes.length * 2]; - for (int i = 0; i < data.lineDashes.length; i++) { - double dash = (double)data.lineDashes[i] / Math.max (1, width); - dashes[i] = dash; - dashes[i + data.lineDashes.length] = dash; - } - } else { - dashStyle = OS.DashStyles_Solid(); - } - } - } - if (dashes != null) { - int list = OS.gcnew_DoubleCollection(dashes.length); - for (int i = 0; i < dashes.length; i++) { - OS.DoubleCollection_Add(list, dashes[i]); - } - dashStyle = OS.gcnew_DashStyle(list, data.lineDashesOffset); - OS.GCHandle_Free(list); - } - OS.Pen_DashStyle(pen, dashStyle); - OS.GCHandle_Free(dashStyle); - int joinStyle = 0; - switch (data.lineJoin) { - case SWT.JOIN_MITER: joinStyle = OS.PenLineJoin_Miter; break; - case SWT.JOIN_BEVEL: joinStyle = OS.PenLineJoin_Bevel; break; - case SWT.JOIN_ROUND: joinStyle = OS.PenLineJoin_Round; break; - } - OS.Pen_LineJoin(pen, joinStyle); - int capStyle = OS.PenLineCap_Flat; - switch (data.lineCap) { - case SWT.CAP_FLAT: capStyle = OS.PenLineCap_Flat; break; - case SWT.CAP_ROUND: capStyle = OS.PenLineCap_Round; break; - case SWT.CAP_SQUARE: capStyle = OS.PenLineCap_Square; break; - } - OS.Pen_DashCap(pen, capStyle); - OS.Pen_EndLineCap(pen, capStyle); - OS.Pen_StartLineCap(pen, capStyle); - OS.Pen_MiterLimit(pen, data.lineMiterLimit); - } - if ((state & BACKGROUND) != 0) { - if (data.brush != 0) OS.GCHandle_Free(data.brush); - data.brush = 0; - Pattern pattern = data.backgroundPattern; - if (pattern != null) { - data.currentBrush = pattern.handle; - } else { - int background = data.background; - int brush = OS.gcnew_SolidColorBrush(background); - if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES); - data.currentBrush = data.brush = brush; - } - } - if ((state & (ALPHA | CLIPPING | TRANSFORM)) != 0) { - for (int i = 0; i < data.pushCount; i++) OS.DrawingContext_Pop(handle); - data.pushCount = 0; - if (data.alpha != 0xFF) { - OS.DrawingContext_PushOpacity(handle, (data.alpha & 0xFF) / (double)0xFF); - data.pushCount++; - } - if (data.clip != 0) { - OS.DrawingContext_PushClip(handle, data.clip); - data.pushCount++; - } - if (data.transform != 0) { - OS.DrawingContext_PushTransform(handle, data.transform); - data.pushCount++; - } - } - -} - -/** - * 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); - - //TODO - implement copyArea -} - -/** - * 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); - - //TODO - implement copyArea - -// /* -// * Feature in WinCE. The function WindowFromDC is not part of the -// * WinCE SDK. The fix is to remember the HWND. -// */ -// int hwnd = data.hwnd; -// if (hwnd == 0) { -// OS.BitBlt(handle, destX, destY, width, height, handle, srcX, srcY, OS.SRCCOPY); -// } else { -// RECT lprcClip = null; -// int hrgn = OS.CreateRectRgn(0, 0, 0, 0); -// if (OS.GetClipRgn(handle, hrgn) == 1) { -// lprcClip = new RECT(); -// OS.GetRgnBox(hrgn, lprcClip); -// } -// OS.DeleteObject(hrgn); -// RECT lprcScroll = new RECT(); -// OS.SetRect(lprcScroll, srcX, srcY, srcX + width, srcY + height); -// int flags = paint ? OS.SW_INVALIDATE | OS.SW_ERASE : 0; -// int res = OS.ScrollWindowEx(hwnd, destX - srcX, destY - srcY, lprcScroll, lprcClip, 0, null, flags); -// -// /* -// * Feature in WinCE. ScrollWindowEx does not accept combined -// * vertical and horizontal scrolling. The fix is to do a -// * BitBlt and invalidate the appropriate source area. -// */ -// if (res == 0 && OS.IsWinCE) { -// OS.BitBlt(handle, destX, destY, width, height, handle, srcX, srcY, OS.SRCCOPY); -// if (paint) { -// int deltaX = destX - srcX, deltaY = destY - srcY; -// boolean disjoint = (destX + width < srcX) || (srcX + width < destX) || (destY + height < srcY) || (srcY + height < destY); -// if (disjoint) { -// OS.InvalidateRect(hwnd, lprcScroll, true); -// } else { -// if (deltaX != 0) { -// int newX = destX - deltaX; -// if (deltaX < 0) newX = destX + width; -// OS.SetRect(lprcScroll, newX, srcY, newX + Math.abs(deltaX), srcY + height); -// OS.InvalidateRect(hwnd, lprcScroll, true); -// } -// if (deltaY != 0) { -// int newY = destY - deltaY; -// if (deltaY < 0) newY = destY + height; -// OS.SetRect(lprcScroll, srcX, newY, srcX + width, newY + Math.abs(deltaY)); -// OS.InvalidateRect(hwnd, lprcScroll, true); -// } -// } -// } -// } -// } -} - -void destroy() { - int brush = data.brush; - if (brush != 0) OS.GCHandle_Free(brush); - data.brush = 0; - int pen = data.pen; - if (pen != 0) OS.GCHandle_Free(pen); - data.pen = 0; - int clip = data.clip; - if (clip != 0) OS.GCHandle_Free(clip); - data.clip = 0; - int transform = data.transform; - if (transform != 0) OS.GCHandle_Free(transform); - data.transform = 0; - - Image image = data.image; - if (image != null) image.memGC = null; - - if (drawable != null) drawable.internal_dispose_GC(handle, data); - drawable = null; - handle = 0; - data.image = 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; - double offset = 0; - if (data.lineWidth == 0 || (data.lineWidth % 2) == 1) offset = 0.5; - if (arcAngle >= 360 || arcAngle <= -360) { - int center = OS.gcnew_Point(x + offset + width / 2f, y + offset + height / 2f); - OS.DrawingContext_DrawEllipse(handle, 0, data.pen, center, width / 2f, height / 2f); - OS.GCHandle_Free(center); - return; - } - boolean isNegative = arcAngle < 0; - boolean isLargeAngle = arcAngle > 180 || arcAngle < -180; - arcAngle = arcAngle + startAngle; - if (isNegative) { - // swap angles - int tmp = startAngle; - startAngle = arcAngle; - arcAngle = tmp; - } - double x1 = Math.cos(startAngle * Math.PI / 180) * width/2.0 + x + offset + width/2.0; - double y1 = -1 * Math.sin(startAngle * Math.PI / 180) * height/2.0 + y + offset + height/2.0; - double x2 = Math.cos(arcAngle * Math.PI / 180) * width/2.0 + x + offset + width/2.0; - double y2 = -1 * Math.sin(arcAngle * Math.PI / 180) * height/2.0 + y + offset + height/2.0; - int startPoint = OS.gcnew_Point(x1, y1); - int endPoint = OS.gcnew_Point(x2, y2); - int size = OS.gcnew_Size(width / 2.0, height / 2.0); - int arc = OS.gcnew_ArcSegment(endPoint, size, 0, isLargeAngle, OS.SweepDirection_Clockwise, true); - int figure = OS.gcnew_PathFigure(); - OS.PathFigure_StartPoint(figure, startPoint); - int segments = OS.PathFigure_Segments(figure); - OS.PathSegmentCollection_Add(segments, arc); - int path = OS.gcnew_PathGeometry(); - int figures = OS.PathGeometry_Figures(path); - OS.PathFigureCollection_Add(figures, figure); - OS.DrawingContext_DrawGeometry(handle, 0, data.pen, path); - OS.GCHandle_Free(figures); - OS.GCHandle_Free(path); - OS.GCHandle_Free(segments); - OS.GCHandle_Free(figure); - OS.GCHandle_Free(arc); - OS.GCHandle_Free(size); - OS.GCHandle_Free(endPoint); - OS.GCHandle_Free(startPoint); -} - -/** - * 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); - //TODO - implement drawFocus -} - -/** - * Draws the given image in the receiver at the specified - * coordinates. - * - * @param image the image to draw - * @param x the x coordinate of where to draw - * @param y the y coordinate of where to draw - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the image is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> - * <li>ERROR_INVALID_ARGUMENT - if the given coordinates are outside the bounds of the image</li> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li> - * </ul> - */ -public void drawImage(Image image, int x, int y) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (image == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); - if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - drawImage(image, 0, 0, -1, -1, x, y, -1, -1, true); -} - -/** - * Copies a rectangular area from the source image into a (potentially - * different sized) rectangular area in the receiver. If the source - * and destination areas are of differing sizes, then the source - * area will be stretched or shrunk to fit the destination area - * as it is copied. The copy fails if any part of the source rectangle - * lies outside the bounds of the source image, or if any of the width - * or height arguments are negative. - * - * @param image the source image - * @param srcX the x coordinate in the source image to copy from - * @param srcY the y coordinate in the source image to copy from - * @param srcWidth the width in pixels to copy from the source - * @param srcHeight the height in pixels to copy from the source - * @param destX the x coordinate in the destination to copy to - * @param destY the y coordinate in the destination to copy to - * @param destWidth the width in pixels of the destination rectangle - * @param destHeight the height in pixels of the destination rectangle - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the image is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> - * <li>ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative. - * <li>ERROR_INVALID_ARGUMENT - if the source rectangle is not contained within the bounds of the source image</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li> - * </ul> - */ -public void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (srcWidth == 0 || srcHeight == 0 || destWidth == 0 || destHeight == 0) return; - if (srcX < 0 || srcY < 0 || srcWidth < 0 || srcHeight < 0 || destWidth < 0 || destHeight < 0) { - SWT.error (SWT.ERROR_INVALID_ARGUMENT); - } - if (image == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); - if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - drawImage(image, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false); -} - -void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) { - checkGC(IMAGE); - int imageHandle = image.handle; - int imgWidth = OS.BitmapSource_PixelWidth(imageHandle); - int imgHeight = OS.BitmapSource_PixelHeight(imageHandle); - 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 mode = 0; - switch (data.interpolation) { - case SWT.DEFAULT: mode = OS.BitmapScalingMode_Unspecified; break; - case SWT.NONE: mode = OS.BitmapScalingMode_LowQuality; break; - case SWT.LOW: mode = OS.BitmapScalingMode_LowQuality; break; - case SWT.HIGH: mode = OS.BitmapScalingMode_HighQuality; break; - default: - SWT.error(SWT.ERROR_INVALID_ARGUMENT); - } - if (srcX != 0 || srcY != 0 || srcWidth != imgWidth || srcHeight != imgHeight) { - int rect = OS.gcnew_Int32Rect(srcX, srcY, srcWidth, srcHeight); - imageHandle = OS.gcnew_CroppedBitmap(imageHandle, rect); - OS.RenderOptions_SetBitmapScalingMode(imageHandle, mode); - OS.GCHandle_Free(rect); - } else { - if (mode != OS.RenderOptions_GetBitmapScalingMode(imageHandle)) { - imageHandle = OS.Freezable_Clone(imageHandle); - OS.RenderOptions_SetBitmapScalingMode(imageHandle, mode); - } - } - int rect = OS.gcnew_Rect(destX, destY, destWidth, destHeight); - OS.DrawingContext_DrawImage(handle, imageHandle, rect); - OS.GCHandle_Free(rect); - if (image.handle != imageHandle) OS.GCHandle_Free(imageHandle); -} - -/** - * 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); - double offset = 0; - if (data.lineWidth == 0 || (data.lineWidth % 2) == 1) offset = 0.5; - int point0 = OS.gcnew_Point(x1 + offset, y1 + offset); - int point1 = OS.gcnew_Point(x2 + offset, y2 + offset); - OS.DrawingContext_DrawLine(handle, data.pen, point0, point1); - OS.GCHandle_Free(point0); - OS.GCHandle_Free(point1); -} - -/** - * 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; - } - double offset = 0; - if (data.lineWidth == 0 || (data.lineWidth % 2) == 1) offset = 0.5; - int center = OS.gcnew_Point(x + offset + width / 2f, y + offset + height / 2f); - OS.DrawingContext_DrawEllipse(handle, 0, data.pen, center, width / 2f, height / 2f); - OS.GCHandle_Free(center); -} - -/** - * 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); - checkGC(DRAW); - //TODO - check offset to draw in the midle of pixel - OS.PathGeometry_FillRule(path.handle, data.fillRule == SWT.FILL_EVEN_ODD ? OS.FillRule_EvenOdd : OS.FillRule_Nonzero); - OS.DrawingContext_DrawGeometry(handle, 0, data.pen, path.handle); -} - -/** - * 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 rect = OS.gcnew_Rect(x, y, 1, 1); - int brush = OS.Pen_Brush(data.pen); - OS.DrawingContext_DrawRectangle(handle, brush, 0, rect); - OS.GCHandle_Free(brush); - OS.GCHandle_Free(rect); -} - -/** - * 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); - drawPolyLineSegment(pointArray, true, true); -} - -void drawPolyLineSegment(int[] pointArray, boolean closed, boolean stroked) { - if (pointArray.length < 4) return; - int list = OS.gcnew_PointCollection(pointArray.length / 2); - double offset = 0; - if (stroked && (data.lineWidth == 0 || (data.lineWidth % 2) == 1)) offset = 0.5; - for (int i = 2; i < pointArray.length; i += 2) { - int point = OS.gcnew_Point(pointArray[i] + offset, pointArray[i + 1] + offset); - OS.PointCollection_Add(list, point); - OS.GCHandle_Free(point); - } - int poly = OS.gcnew_PolyLineSegment(list, stroked); - OS.GCHandle_Free(list); - int figure = OS.gcnew_PathFigure(); - int startPoint = OS.gcnew_Point(pointArray[0] + offset, pointArray[1] + offset); - OS.PathFigure_StartPoint(figure, startPoint); - OS.PathFigure_IsClosed(figure, closed); - int segments = OS.PathFigure_Segments(figure); - OS.PathSegmentCollection_Add(segments, poly); - int path = OS.gcnew_PathGeometry(); -// int mode = 0; -// switch (data.antialias) { -// case SWT.DEFAULT: -// case SWT.ON: mode = OS.EdgeMode_Unspecified; break; -// case SWT.OFF: mode = OS.EdgeMode_Aliased; break; -// } -// OS.RenderOptions_SetEdgeMode(path, mode); - if (!stroked) OS.PathGeometry_FillRule(path, data.fillRule == SWT.FILL_EVEN_ODD ? OS.FillRule_EvenOdd : OS.FillRule_Nonzero); - int figures = OS.PathGeometry_Figures(path); - OS.PathFigureCollection_Add(figures, figure); - OS.DrawingContext_DrawGeometry(handle, stroked ? 0 : data.currentBrush, stroked ? data.pen : 0, path); - OS.GCHandle_Free(figures); - OS.GCHandle_Free(path); - OS.GCHandle_Free(segments); - OS.GCHandle_Free(figure); - OS.GCHandle_Free(startPoint); - OS.GCHandle_Free(poly); -} - -/** - * 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); - drawPolyLineSegment(pointArray, false, true); -} - -/** - * 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; - } - double offset = 0; - if (data.lineWidth == 0 || (data.lineWidth % 2) == 1) offset = 0.5; - int rect = OS.gcnew_Rect(x + offset, y + offset, width, height); - OS.DrawingContext_DrawRectangle(handle, 0, data.pen, rect); - OS.GCHandle_Free(rect); -} - -/** - * 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); - if (arcWidth < 0 || arcHeight < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - checkGC(DRAW); - if (width < 0) { - x = x + width; - width = -width; - } - if (height < 0) { - y = y + height; - height = -height; - } - if (arcWidth < 0) arcWidth = -arcWidth; - if (arcHeight < 0) arcHeight = -arcHeight; - double offset = 0; - if (data.lineWidth == 0 || (data.lineWidth % 2) == 1) offset = 0.5; - int rect = OS.gcnew_Rect(x + offset, y + offset, width, height); - OS.DrawingContext_DrawRoundedRectangle(handle, 0, data.pen, rect, arcWidth / 2f, arcHeight / 2f); - OS.GCHandle_Free(rect); -} - -/** - * 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); - int length = string.length (); - if (length == 0) return; - checkGC(FONT | FOREGROUND | ALPHA | CLIPPING | TRANSFORM | ((flags & SWT.DRAW_TRANSPARENT) != 0 ? 0 : BACKGROUND)); - char [] buffer = new char [length + 1]; - string.getChars(0, length, buffer, 0); - int mask = SWT.DRAW_DELIMITER | SWT.DRAW_TAB | SWT.DRAW_MNEMONIC; - int mnemonic = -1; - if ((flags & mask) != mask) { - for (int i = 0, j = 0; i < buffer.length; i++) { - char c = buffer[i]; - switch (c) { - case '&': { - if ((flags & SWT.DRAW_MNEMONIC) != 0) { - if (i + 1 < length) { - if (buffer[i + 1] == '&') { - i++; - } else { - if (mnemonic == -1) mnemonic = j; - } - } - continue; - } - break; - } - case '\r': - case '\n': - if ((flags & SWT.DRAW_DELIMITER) == 0) continue; - break; - case '\t': - if ((flags & SWT.DRAW_TAB) == 0) continue; - break; - } - buffer[j++] = c; - } - } - int str = OS.gcnew_String (buffer); - int culture = OS.CultureInfo_CurrentUICulture(); - Font font = data.font; - int direction = (data.style & SWT.RIGHT_TO_LEFT) != 0 ? OS.FlowDirection_RightToLeft : OS.FlowDirection_LeftToRight; - int brush = OS.Pen_Brush(data.pen); - int text = OS.gcnew_FormattedText(str, culture, direction, font.handle, font.size, brush); - int point = OS.gcnew_Point(x, y); - if (mnemonic != -1) { - int underline = OS.TextDecorations_Underline(); - OS.FormattedText_SetTextDecorations(text, underline, mnemonic, 1); - OS.GCHandle_Free(underline); - } - if ((flags & SWT.DRAW_TRANSPARENT) == 0) { - double width = OS.FormattedText_WidthIncludingTrailingWhitespace(text); - double height = OS.FormattedText_Height(text); - int rect = OS.gcnew_Rect(x, y, width, height); - OS.DrawingContext_DrawRectangle(handle, data.currentBrush, 0, rect); - OS.GCHandle_Free(rect); - - } - OS.DrawingContext_DrawText(handle, text, point); - OS.GCHandle_Free(point); - OS.GCHandle_Free(culture); - OS.GCHandle_Free(str); - OS.GCHandle_Free(brush); - OS.GCHandle_Free(text); -} - -/** - * Compares the argument to the receiver, and returns true - * if they represent the <em>same</em> object using a class - * specific comparison. - * - * @param object the object to compare with this object - * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise - * - * @see #hashCode - */ -public boolean equals (Object object) { - return (object == this) || ((object instanceof GC) && (handle == ((GC)object).handle)); -} - -/** - * Fills the interior of a circular or elliptical arc within - * the specified rectangular area, with the receiver's background - * color. - * <p> - * The resulting arc begins at <code>startAngle</code> and extends - * for <code>arcAngle</code> degrees, using the current color. - * Angles are interpreted such that 0 degrees is at the 3 o'clock - * position. A positive value indicates a counter-clockwise rotation - * while a negative value indicates a clockwise rotation. - * </p><p> - * The center of the arc is the center of the rectangle whose origin - * is (<code>x</code>, <code>y</code>) and whose size is specified by the - * <code>width</code> and <code>height</code> arguments. - * </p><p> - * The resulting arc covers an area <code>width + 1</code> pixels wide - * by <code>height + 1</code> pixels tall. - * </p> - * - * @param x the x coordinate of the upper-left corner of the arc to be filled - * @param y the y coordinate of the upper-left corner of the arc to be filled - * @param width the width of the arc to be filled - * @param height the height of the arc to be filled - * @param startAngle the beginning angle - * @param arcAngle the angular extent of the arc, relative to the start angle - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see #drawArc - */ -public void fillArc (int x, int y, int width, int height, int startAngle, int arcAngle) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - 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; - if (arcAngle >= 360 || arcAngle <= -360) { - int center = OS.gcnew_Point(x + width / 2f, y + height / 2f); - OS.DrawingContext_DrawEllipse(handle, data.currentBrush, 0, center, width / 2f, height / 2f); - OS.GCHandle_Free(center); - return; - } - boolean isNegative = arcAngle < 0; - boolean isLargeAngle = arcAngle > 180 || arcAngle < -180; - arcAngle = arcAngle + startAngle; - if (isNegative) { - // swap angles - int tmp = startAngle; - startAngle = arcAngle; - arcAngle = tmp; - } - double x1 = Math.cos(startAngle * Math.PI / 180) * width/2.0 + x + width/2.0; - double y1 = -1 * Math.sin(startAngle * Math.PI / 180) * height/2.0 + y + height/2.0; - double x2 = Math.cos(arcAngle * Math.PI / 180) * width/2.0 + x + width/2.0; - double y2 = -1 * Math.sin(arcAngle * Math.PI / 180) * height/2.0 + y + height/2.0; - int startPoint = OS.gcnew_Point(x1, y1); - int endPoint = OS.gcnew_Point(x2, y2); - int center = OS.gcnew_Point(x + width / 2.0, y + height / 2.0); - int size = OS.gcnew_Size(width / 2.0, height / 2.0); - int arc = OS.gcnew_ArcSegment(endPoint, size, 0, isLargeAngle, OS.SweepDirection_Clockwise, false); - int line = OS.gcnew_LineSegment(center, false); - int figure = OS.gcnew_PathFigure(); - OS.PathFigure_StartPoint(figure, startPoint); - int segments = OS.PathFigure_Segments(figure); - OS.PathSegmentCollection_Add(segments, arc); - OS.PathSegmentCollection_Add(segments, line); - int path = OS.gcnew_PathGeometry(); - int figures = OS.PathGeometry_Figures(path); - OS.PathFigureCollection_Add(figures, figure); - OS.DrawingContext_DrawGeometry(handle, data.currentBrush, 0, path); - OS.GCHandle_Free(figures); - OS.GCHandle_Free(path); - OS.GCHandle_Free(segments); - OS.GCHandle_Free(figure); - OS.GCHandle_Free(arc); - OS.GCHandle_Free(line); - OS.GCHandle_Free(size); - OS.GCHandle_Free(endPoint); - OS.GCHandle_Free(startPoint); -} - -/** - * 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; - checkGC(FILL); - - int fromColor = data.foreground; - int toColor = data.background; - - boolean swapColors = false; - if (width < 0) { - x += width; width = -width; - if (! vertical) swapColors = true; - } - if (height < 0) { - y += height; height = -height; - if (vertical) swapColors = true; - } - if (swapColors) { - int temp = fromColor; - fromColor = toColor; - toColor = temp; - } - int brush = OS.gcnew_LinearGradientBrush(fromColor, toColor, vertical ? 90 : 0); - int rect = OS.gcnew_Rect(x, y, width, height); - OS.DrawingContext_DrawRectangle(handle, brush, 0, rect); - OS.GCHandle_Free(rect); - OS.GCHandle_Free(brush); -} - -/** - * 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 center = OS.gcnew_Point(x + width / 2f, y + height / 2f); - OS.DrawingContext_DrawEllipse(handle, data.currentBrush, 0, center, width / 2f, height / 2f); - OS.GCHandle_Free(center); -} - -/** - * 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); - checkGC(FILL); - OS.PathGeometry_FillRule(path.handle, data.fillRule == SWT.FILL_EVEN_ODD ? OS.FillRule_EvenOdd : OS.FillRule_Nonzero); - OS.DrawingContext_DrawGeometry(handle, data.currentBrush, 0, path.handle); -} - -/** - * 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); - drawPolyLineSegment(pointArray, true, false); -} - -/** - * 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 rect = OS.gcnew_Rect(x, y, width, height); - OS.DrawingContext_DrawRectangle(handle, data.currentBrush, 0, rect); - OS.GCHandle_Free(rect); -} - -/** - * Fills the interior of the specified rectangle, using the receiver's - * background color. - * - * @param rect the rectangle to be filled - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see #drawRectangle(int, int, int, int) - */ -public void fillRectangle (Rectangle rect) { - if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - fillRectangle (rect.x, rect.y, rect.width, rect.height); -} - -/** - * Fills the interior of the round-cornered rectangle specified by - * the arguments, using the receiver's background color. - * - * @param x the x coordinate of the rectangle to be filled - * @param y the y coordinate of the rectangle to be filled - * @param width the width of the rectangle to be filled - * @param height the height of the rectangle to be filled - * @param arcWidth the width of the arc - * @param arcHeight the height of the arc - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see #drawRoundRectangle - */ -public void fillRoundRectangle (int x, int y, int width, int height, int arcWidth, int arcHeight) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - checkGC(FILL); - if (width < 0) { - x = x + width; - width = -width; - } - if (height < 0) { - y = y + height; - height = -height; - } - if (arcWidth < 0) arcWidth = -arcWidth; - if (arcHeight < 0) arcHeight = -arcHeight; - int rect = OS.gcnew_Rect(x, y, width, height); - OS.DrawingContext_DrawRoundedRectangle(handle, data.currentBrush, 0, rect, arcWidth / 2f, arcHeight / 2f); - OS.GCHandle_Free(rect); -} - -/** - * 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); - //NOT DONE - 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 true; -} - -/** - * Returns the receiver's alpha value. The alpha value - * is between 0 (transparent) and 255 (opaque). - * - * @return the alpha value - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @since 3.1 - */ -public int getAlpha() { - if (handle == 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); - return data.antialias; -} - -/** - * 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.wpf_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); - //NOT DONE - return stringExtent(new String(new char[]{ch})).x; -} - -/** - * Returns the bounding rectangle of the receiver's clipping - * region. If no clipping region is set, the return value - * will be a rectangle which covers the entire bounds of the - * object the receiver is drawing on. - * - * @return the bounding rectangle of the clipping region - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public Rectangle getClipping() { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - int x = 0, y = 0, width = 0, height = 0; - int visualType = OS.Object_GetType(data.visual); - int drawingVisualType = OS.DrawingVisual_typeid(); - if (OS.Object_Equals(visualType, drawingVisualType)) { - int clip = OS.ContainerVisual_Clip(data.visual); - int rect = OS.Geometry_Bounds(clip); - width = (int)OS.Rect_Width(rect); - height = (int)OS.Rect_Height(rect); - OS.GCHandle_Free(rect); - OS.GCHandle_Free(clip); - } else { - width = (int)OS.FrameworkElement_ActualWidth(data.visual); - height = (int)OS.FrameworkElement_ActualHeight(data.visual); - } - OS.GCHandle_Free(drawingVisualType); - OS.GCHandle_Free(visualType); - if (data.clip != 0) { - int bounds = OS.gcnew_Rect(x, y, width, height); - int rect = OS.Geometry_Bounds(data.clip); - OS.Rect_Intersect(bounds, rect); - x = (int)OS.Rect_X(bounds); - y = (int)OS.Rect_Y(bounds); - width = (int)OS.Rect_Width(bounds); - height = (int)OS.Rect_Height(bounds); - OS.GCHandle_Free(rect); - OS.GCHandle_Free(bounds); - } - 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 bounds; - int visualType = OS.Object_GetType(data.visual); - int drawingVisualType = OS.DrawingVisual_typeid(); - if (OS.Object_Equals(visualType, drawingVisualType)) { - bounds = OS.ContainerVisual_Clip(data.visual); - } else { - double width = OS.FrameworkElement_ActualWidth(data.visual); - double height = OS.FrameworkElement_ActualHeight(data.visual); - int rect = OS.gcnew_Rect(0, 0, width, height); - bounds = OS.gcnew_RectangleGeometry(rect); - OS.GCHandle_Free(rect); - } - OS.GCHandle_Free(drawingVisualType); - OS.GCHandle_Free(visualType); - int geometries = OS.GeometryGroup_Children(region.handle); - OS.GeometryCollection_Clear(geometries); - if (data.clip != 0) { - int clip = OS.Geometry_GetFlattenedPathGeometry(data.clip); - int newGeometry = OS.gcnew_CombinedGeometry(OS.GeometryCombineMode_Intersect, bounds, clip); - OS.GeometryCollection_Add(geometries, newGeometry); - OS.GCHandle_Free(clip); - OS.GCHandle_Free(newGeometry); - } else { - OS.GeometryCollection_Add(geometries, bounds); - } - OS.GCHandle_Free(bounds); - OS.GCHandle_Free(geometries); -} - -/** - * 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); - return data.fillRule; -} - -/** - * Returns the font currently being used by the receiver - * to draw and measure text. - * - * @return the receiver's font - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public Font getFont () { - if (handle == 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); - checkGC(FONT); - //TODO - find a better way of getting font metrics - String string = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; - int length = string.length(); - char [] buffer = new char [length + 1]; - string.getChars (0, length, buffer, 0); - int str = OS.gcnew_String (buffer); - int culture = OS.CultureInfo_CurrentUICulture(); - Font font = data.font; - int direction = (data.style & SWT.RIGHT_TO_LEFT) != 0 ? OS.FlowDirection_RightToLeft : OS.FlowDirection_LeftToRight; - int brush = OS.Brushes_White(); - int text = OS.gcnew_FormattedText(str, culture, direction, font.handle, font.size, brush); - double width = OS.FormattedText_WidthIncludingTrailingWhitespace(text); - double height = OS.FormattedText_Height(text); - double baseline = OS.FormattedText_Baseline(text); - OS.GCHandle_Free(text); - OS.GCHandle_Free(brush); - OS.GCHandle_Free(culture); - OS.GCHandle_Free(str); - return FontMetrics.wpf_new((int)baseline, (int)(height - baseline), (int)width / string.length(), 0, (int)height); -} - -/** - * Returns the receiver's foreground color. - * - * @return the color used for drawing foreground things - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public Color getForeground() { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - return Color.wpf_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]; - System.arraycopy(data.lineDashes, 0, lineDashes, 0, lineDashes.length); - 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); - return data.textAntialias; -} - -/** - * 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); - if (data.transform != 0) { - OS.MatrixTransform_Matrix(transform.handle, data.transform); - } 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; -} - -void init(Drawable drawable, GCData data, int hDC) { - int foreground = data.foreground; - if (foreground != -1) data.state &= ~FOREGROUND; - int background = data.background; - if (background != 0) data.state &= ~BACKGROUND; - Font font = data.font; - if (font != null) data.state &= ~FONT; - Image image = data.image; - if (image != null) image.memGC = this; -// int layout = data.layout; -// if (layout != -1) { -// if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(4, 10)) { -// int flags = OS.GetLayout(hDC); -// if ((flags & OS.LAYOUT_RTL) != (layout & OS.LAYOUT_RTL)) { -// flags &= ~OS.LAYOUT_RTL; -// OS.SetLayout(hDC, flags | layout); -// } -// if ((data.style & SWT.RIGHT_TO_LEFT) != 0) data.style |= SWT.MIRRORED; -// } -// } - this.drawable = drawable; - this.data = data; - handle = hDC; -} - -/** - * Returns an integer hash code for the receiver. Any two - * objects that return <code>true</code> when passed to - * <code>equals</code> must return the same value for this - * method. - * - * @return the receiver's hash - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see #equals - */ -public int hashCode () { - return handle; -} - -/** - * 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.clip != 0; -} - -/** - * Returns <code>true</code> if the GC has been disposed, - * and <code>false</code> otherwise. - * <p> - * This method gets the dispose state for the GC. - * When a GC has been disposed, it is an error to - * invoke any other method using the GC. - * - * @return <code>true</code> when the GC is disposed and <code>false</code> otherwise - */ -public boolean isDisposed() { - return handle == 0; -} - -/** - * Sets the receiver to always use the operating system's advanced graphics - * subsystem for all graphics operations if the argument is <code>true</code>. - * If the argument is <code>false</code>, the advanced graphics subsystem is - * no longer used, advanced graphics state is cleared and the normal graphics - * subsystem is used from now on. - * <p> - * Normally, the advanced graphics subsystem is invoked automatically when - * any one of the alpha, antialias, patterns, interpolation, paths, clipping - * or transformation operations in the receiver is requested. When the receiver - * is switched into advanced mode, the advanced graphics subsystem performs both - * advanced and normal graphics operations. Because the two subsystems are - * different, their output may differ. Switching to advanced graphics before - * any graphics operations are performed ensures that the output is consistent. - * </p><p> - * Advanced graphics may not be installed for the operating system. In this - * case, this operation does nothing. Some operating system have only one - * graphics subsystem, so switching from normal to advanced graphics does - * nothing. However, switching from advanced to normal graphics will always - * clear the advanced graphics state, even for operating systems that have - * only one graphics subsystem. - * </p> - * - * @param advanced the new advanced graphics state - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see #setAlpha - * @see #setAntialias - * @see #setBackgroundPattern - * @see #setClipping(Path) - * @see #setForegroundPattern - * @see #setLineAttributes - * @see #setInterpolation - * @see #setTextAntialias - * @see #setTransform - * @see #getAdvanced - * - * @since 3.1 - */ -public void setAdvanced(boolean advanced) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (!advanced) { - setAlpha(0xFF); - setAntialias(SWT.DEFAULT); - setBackgroundPattern(null); - setClipping((Rectangle)null); - setForegroundPattern(null); - setInterpolation(SWT.DEFAULT); - setTextAntialias(SWT.DEFAULT); - setTransform(null); - } -} - -/** - * Sets the receiver's anti-aliasing value to the parameter, - * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> - * or <code>SWT.ON</code>. Note that this controls anti-aliasing for all - * <em>non-text drawing</em> operations. - * <p> - * This operation requires the operating system's advanced - * graphics subsystem which may not be available on some - * platforms. - * </p> - * - * @param antialias the anti-aliasing setting - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the parameter is not one of <code>SWT.DEFAULT</code>, - * <code>SWT.OFF</code> or <code>SWT.ON</code></li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> - * </ul> - * - * @see #getAdvanced - * @see #setAdvanced - * @see #setTextAntialias - * - * @since 3.1 - */ -public void setAntialias(int antialias) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - switch (antialias) { - case SWT.DEFAULT: - case SWT.OFF: - case SWT.ON: - break; - default: - SWT.error(SWT.ERROR_INVALID_ARGUMENT); - } - data.antialias = antialias; -} - -/** - * 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); - data.alpha = alpha & 0xFF; - data.state &= ~ALPHA; -} - -/** - * 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); - if (data.backgroundPattern == null && data.background == color.handle) return; - data.backgroundPattern = null; - data.background = color.handle; - data.state &= ~BACKGROUND; -} - -/** - * Sets the background pattern. The default value is <code>null</code>. - * <p> - * This operation requires the operating system's advanced - * graphics subsystem which may not be available on some - * platforms. - * </p> - * - * @param pattern the new background pattern - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> - * </ul> - * - * @see Pattern - * @see #getAdvanced - * @see #setAdvanced - * - * @since 3.1 - */ -public void setBackgroundPattern (Pattern pattern) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - if (data.backgroundPattern == pattern) return; - data.backgroundPattern = pattern; - data.state &= ~BACKGROUND; -} - -/** - * Sets the area of the receiver which can be changed - * by drawing operations to the rectangular area specified - * by the arguments. - * - * @param x the x coordinate of the clipping rectangle - * @param y the y coordinate of the clipping rectangle - * @param width the width of the clipping rectangle - * @param height the height of the clipping rectangle - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void setClipping (int x, int y, int width, int height) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (width < 0) { - x = x + width; - width = -width; - } - if (height < 0) { - y = y + height; - height = -height; - } - int rect = OS.gcnew_Rect(x, y, width, height); - int clip = OS.gcnew_RectangleGeometry(rect); - OS.GCHandle_Free(rect); - if (data.clip != 0) OS.GCHandle_Free(data.clip); - data.clip = clip; - data.state &= ~CLIPPING; -} - -/** - * Sets the area of the receiver which can be changed - * by drawing operations to the path specified - * by the argument. - * <p> - * This operation requires the operating system's advanced - * graphics subsystem which may not be available on some - * platforms. - * </p> - * - * @param path the clipping path. - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the path has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> - * </ul> - * - * @see Path - * @see #getAdvanced - * @see #setAdvanced - * - * @since 3.1 - */ -public void setClipping (Path path) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (path != null && path.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - if (data.clip != 0) OS.GCHandle_Free(data.clip); - data.clip = path != null ? OS.Geometry_Clone(path.handle) : 0; - data.state &= ~CLIPPING; -} - -/** - * 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) { - if (data.clip != 0) OS.GCHandle_Free(data.clip); - data.clip = 0; - data.state &= ~CLIPPING; - } else { - setClipping(rect.x, rect.y, rect.width, rect.height); - } -} - -/** - * Sets the area of the receiver which can be changed - * by drawing operations to the region specified - * by the argument. Specifying <code>null</code> for the - * region reverts the receiver's clipping area to its - * original value. - * - * @param region the clipping region or <code>null</code> - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the region has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void setClipping (Region region) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (region != null && region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - if (data.clip != 0) OS.GCHandle_Free(data.clip); - data.clip = region != null ? OS.Geometry_Clone(region.handle) : 0; - data.state &= ~CLIPPING; -} - -/** - * Sets the receiver's fill rule to the parameter, which must be one of - * <code>SWT.FILL_EVEN_ODD</code> or <code>SWT.FILL_WINDING</code>. - * - * @param rule the new fill rule - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the rule is not one of <code>SWT.FILL_EVEN_ODD</code> - * or <code>SWT.FILL_WINDING</code></li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @since 3.1 - */ -public void setFillRule(int rule) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - switch (rule) { - case SWT.FILL_WINDING: - case SWT.FILL_EVEN_ODD: break; - default: - SWT.error(SWT.ERROR_INVALID_ARGUMENT); - } - data.fillRule = rule; -} - -/** - * Sets the font which will be used by the receiver - * to draw and measure text to the argument. If the - * argument is null, then a default font appropriate - * for the platform will be used instead. - * - * @param font the new font for the receiver, or null to indicate a default font - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the font has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void setFont (Font font) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (font != null && font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - data.font = font != null ? font : data.device.systemFont; - data.state &= ~FONT; -} - -/** - * Sets the foreground color. The foreground color is used - * for drawing operations including when text is drawn. - * - * @param color the new foreground color for the receiver - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the color is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the color has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void setForeground (Color color) { - if (handle == 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); - if (data.foregroundPattern == null && color.handle == data.foreground) return; - data.foregroundPattern = null; - data.foreground = color.handle; - 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.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); - switch (interpolation) { - case SWT.DEFAULT: break; - case SWT.NONE: break; - case SWT.LOW: break; - case SWT.HIGH: break; - default: - SWT.error(SWT.ERROR_INVALID_ARGUMENT); - } - 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; - } - 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; - } - 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; - switch (data.lineStyle) { - case SWT.LINE_DOT: - case SWT.LINE_DASH: - case SWT.LINE_DASHDOT: - case SWT.LINE_DASHDOTDOT: - data.state &= ~LINE_STYLE; - } -} - -/** - * If the argument is <code>true</code>, puts the receiver - * in a drawing mode where the resulting color in the destination - * is the <em>exclusive or</em> of the color values in the source - * and the destination, and if the argument is <code>false</code>, - * puts the receiver in a drawing mode where the destination color - * is replaced with the source color value. - * <p> - * Note that this mode in fundamentally unsupportable on certain - * platforms, notably Carbon (Mac OS X). Clients that want their - * code to run on all platforms need to avoid this method. - * </p> - * - * @param xor if <code>true</code>, then <em>xor</em> mode is used, otherwise <em>source copy</em> mode is used - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @deprecated this functionality is not supported on some platforms - */ -public void setXORMode(boolean xor) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - data.xorMode = xor; -} - -/** - * Sets the receiver's text anti-aliasing value to the parameter, - * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> - * or <code>SWT.ON</code>. Note that this controls anti-aliasing only - * for all <em>text drawing</em> operations. - * <p> - * This operation requires the operating system's advanced - * graphics subsystem which may not be available on some - * platforms. - * </p> - * - * @param antialias the anti-aliasing setting - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the parameter is not one of <code>SWT.DEFAULT</code>, - * <code>SWT.OFF</code> or <code>SWT.ON</code></li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> - * </ul> - * - * @see #getAdvanced - * @see #setAdvanced - * @see #setAntialias - * - * @since 3.1 - */ -public void setTextAntialias(int antialias) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - switch (antialias) { - case SWT.DEFAULT: - case SWT.OFF: - case SWT.ON: - break; - default: - SWT.error(SWT.ERROR_INVALID_ARGUMENT); - } - data.textAntialias = antialias; -} - -/** - * Sets the transform that is currently being used by the receiver. If - * the argument is <code>null</code>, the current transform is set to - * the identity transform. - * <p> - * This operation requires the operating system's advanced - * graphics subsystem which may not be available on some - * platforms. - * </p> - * - * @param transform the transform to set - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> - * </ul> - * - * @see Transform - * @see #getAdvanced - * @see #setAdvanced - * - * @since 3.1 - */ -public void setTransform(Transform transform) { - if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (transform != null && transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - data.transform = transform != null ? OS.gcnew_MatrixTransform(transform.handle) : 0; - data.state &= ~TRANSFORM; -} - -/** - * 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); - checkGC(FONT); - int length = string.length(); - char [] buffer = new char [length + 1]; - string.getChars (0, length, buffer, 0); - if ((flags & (SWT.DRAW_DELIMITER | SWT.DRAW_TAB)) != (SWT.DRAW_DELIMITER | SWT.DRAW_TAB)) { - for (int i = 0, j = 0; i < buffer.length; i++) { - char c = buffer[i]; - switch (c) { - case '\r': - case '\n': - if ((flags & SWT.DRAW_DELIMITER) == 0) continue; - break; - case '\t': - if ((flags & SWT.DRAW_TAB) == 0) continue; - break; - } - buffer[j++] = c; - } - } - int str = OS.gcnew_String (buffer); - int culture = OS.CultureInfo_CurrentUICulture(); - Font font = data.font; - int direction = (data.style & SWT.RIGHT_TO_LEFT) != 0 ? OS.FlowDirection_RightToLeft : OS.FlowDirection_LeftToRight; - int brush = OS.Brushes_White(); - int text = OS.gcnew_FormattedText(str, culture, direction, font.handle, font.size, brush); - double width = OS.FormattedText_WidthIncludingTrailingWhitespace(text); - double height = OS.FormattedText_Height(text); - OS.GCHandle_Free(text); - OS.GCHandle_Free(brush); - OS.GCHandle_Free(culture); - OS.GCHandle_Free(str); - return new Point((int)width, (int)height); -} - -/** - * Returns a string containing a concise, human-readable - * description of the receiver. - * - * @return a string representation of the receiver - */ -public String toString () { - if (isDisposed()) return "GC {*DISPOSED*}"; - return "GC {" + handle + "}"; -} - -/** - * Invokes platform specific functionality to allocate a new graphics context. - * <p> - * <b>IMPORTANT:</b> This method is <em>not</em> part of the public - * API for <code>GC</code>. It is marked public only so that it - * can be shared within the packages provided by SWT. It is not - * available on all platforms, and should never be called from - * application code. - * </p> - * - * @param drawable the Drawable for the receiver. - * @param data the data for the receiver. - * - * @return a new <code>GC</code> - */ -public static GC wpf_new(Drawable drawable, GCData data) { - GC gc = new GC(); - int hDC = drawable.internal_new_GC(data); - gc.device = data.device; - gc.init(drawable, data, hDC); - return gc; -} - -/** - * Invokes platform specific functionality to wrap a graphics context. - * <p> - * <b>IMPORTANT:</b> This method is <em>not</em> part of the public - * API for <code>GC</code>. It is marked public only so that it - * can be shared within the packages provided by SWT. It is not - * available on all platforms, and should never be called from - * application code. - * </p> - * - * @param hDC the Windows HDC. - * @param data the data for the receiver. - * - * @return a new <code>GC</code> - */ -public static GC wpf_new(int hDC, GCData data) { - GC gc = new GC(); - gc.device = data.device; - gc.init(null, data, hDC); - return gc; -} - -} |