| /******************************************************************************* |
| * Copyright (c) 2000, 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.graphics; |
| |
| import org.eclipse.swt.internal.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> |
| * Application code must explicitly invoke the <code>GC.dispose()</code> |
| * method to release the operating system resources managed by each instance |
| * when those instances are no longer required. This is <em>particularly</em> |
| * important on Windows95 and Windows98 where the operating system has a limited |
| * number of device contexts available. |
| * </p> |
| * |
| * <p> |
| * Note: Only one of LEFT_TO_RIGHT and RIGHT_TO_LEFT may be specified. |
| * </p> |
| * |
| * @see org.eclipse.swt.events.PaintEvent |
| */ |
| |
| public final class GC extends Resource { |
| |
| /** |
| * the handle to the OS device context |
| * (Warning: This field is platform dependent) |
| * <p> |
| * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT |
| * public API. It is marked public only so that it can be shared |
| * within the packages provided by SWT. It is not available on all |
| * platforms and should never be accessed from application code. |
| * </p> |
| */ |
| public int handle; |
| |
| Drawable drawable; |
| GCData data; |
| |
| static final int 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); |
| if (device.tracking) device.new_Object(this); |
| } |
| |
| static int checkStyle(int style) { |
| if ((style & SWT.LEFT_TO_RIGHT) != 0) style &= ~SWT.RIGHT_TO_LEFT; |
| return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT); |
| } |
| |
| 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); |
| // } |
| // } |
| // } |
| // } |
| // } |
| } |
| |
| /** |
| * Disposes of the operating system resources associated with |
| * the graphics context. Applications must dispose of all GCs |
| * which they allocate. |
| * |
| * @exception SWTError <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li> |
| * </ul> |
| */ |
| public void dispose() { |
| if (handle == 0) return; |
| if (data.device.isDisposed()) return; |
| |
| 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; |
| |
| Device device = data.device; |
| if (drawable != null) drawable.internal_dispose_GC(handle, data); |
| drawable = null; |
| handle = 0; |
| data.image = null; |
| if (device.tracking) device.dispose_Object(this); |
| data.device = null; |
| data = null; |
| } |
| |
| /** |
| * Draws the outline of a circular or elliptical arc |
| * within the specified rectangular area. |
| * <p> |
| * The resulting arc begins at <code>startAngle</code> and extends |
| * for <code>arcAngle</code> degrees, using the current color. |
| * Angles are interpreted such that 0 degrees is at the 3 o'clock |
| * position. A positive value indicates a counter-clockwise rotation |
| * while a negative value indicates a clockwise rotation. |
| * </p><p> |
| * The center of the arc is the center of the rectangle whose origin |
| * is (<code>x</code>, <code>y</code>) and whose size is specified by the |
| * <code>width</code> and <code>height</code> arguments. |
| * </p><p> |
| * The resulting arc covers an area <code>width + 1</code> pixels wide |
| * by <code>height + 1</code> pixels tall. |
| * </p> |
| * |
| * @param x the x coordinate of the upper-left corner of the arc to be drawn |
| * @param y the y coordinate of the upper-left corner of the arc to be drawn |
| * @param width the width of the arc to be drawn |
| * @param height the height of the arc to be drawn |
| * @param startAngle the beginning angle |
| * @param arcAngle the angular extent of the arc, relative to the start angle |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void drawArc (int x, int y, int width, int height, int startAngle, int arcAngle) { |
| if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| 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(); |
| int decorations = OS.gcnew_TextDecorationCollection(1); |
| OS.TextDecorationCollection_Add(decorations, underline); |
| OS.FormattedText_SetTextDecorations(text, decorations, mnemonic, 1); |
| OS.GCHandle_Free(decorations); |
| 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. |
| * |
| * @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 |
| */ |
| 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. |
| * <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.join; |
| 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; |
| } |
| |
| } |
