| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.graphics; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.gdip.*; |
| import org.eclipse.swt.internal.win32.*; |
| |
| /** |
| * Instances of this class represent paths through the two-dimensional |
| * coordinate system. Paths do not have to be continuous, and can be |
| * described using lines, rectangles, arcs, cubic or quadratic bezier curves, |
| * glyphs, or other paths. |
| * <p> |
| * Application code must explicitly invoke the <code>Path.dispose()</code> |
| * method to release the operating system resources managed by each instance |
| * when those instances are no longer required. |
| * </p> |
| * <p> |
| * This class requires the operating system's advanced graphics subsystem |
| * which may not be available on some platforms. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#path">Path, Pattern snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: GraphicsExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * |
| * @since 3.1 |
| */ |
| public class Path extends Resource { |
| |
| /** |
| * the OS resource for the Path |
| * (Warning: This field is platform dependent) |
| * <p> |
| * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT |
| * public API. It is marked public only so that it can be shared |
| * within the packages provided by SWT. It is not available on all |
| * platforms and should never be accessed from application code. |
| * </p> |
| */ |
| public int /*long*/ handle; |
| |
| PointF currentPoint = new PointF(), startPoint = new PointF(); |
| |
| /** |
| * Constructs a new empty Path. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param device the device on which to allocate the path |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the device is null and there is no current device</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_NO_HANDLES if a handle for the path could not be obtained</li> |
| * </ul> |
| * |
| * @see #dispose() |
| */ |
| public Path (Device device) { |
| super(device); |
| this.device.checkGDIP(); |
| handle = Gdip.GraphicsPath_new(Gdip.FillModeAlternate); |
| if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| init(); |
| } |
| |
| /** |
| * Constructs a new Path that is a copy of <code>path</code>. If |
| * <code>flatness</code> is less than or equal to zero, an unflatten |
| * copy of the path is created. Otherwise, it specifies the maximum |
| * error between the path and its flatten copy. Smaller numbers give |
| * better approximation. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param device the device on which to allocate the path |
| * @param path the path to make a copy |
| * @param flatness the flatness value |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the device is null and there is no current device</li> |
| * <li>ERROR_NULL_ARGUMENT - if the path is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the path has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_NO_HANDLES if a handle for the path could not be obtained</li> |
| * </ul> |
| * |
| * @see #dispose() |
| * @since 3.4 |
| */ |
| public Path (Device device, Path path, float flatness) { |
| super(device); |
| if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (path.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| flatness = Math.max(0, flatness); |
| handle = Gdip.GraphicsPath_Clone(path.handle); |
| if (flatness != 0) Gdip.GraphicsPath_Flatten(handle, 0, flatness); |
| if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| init(); |
| } |
| |
| /** |
| * Constructs a new Path with the specifed PathData. |
| * <p> |
| * This operation requires the operating system's advanced |
| * graphics subsystem which may not be available on some |
| * platforms. |
| * </p> |
| * |
| * @param device the device on which to allocate the path |
| * @param data the data for the path |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the device is null and there is no current device</li> |
| * <li>ERROR_NULL_ARGUMENT - if the data is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> |
| * </ul> |
| * @exception SWTError <ul> |
| * <li>ERROR_NO_HANDLES if a handle for the path could not be obtained</li> |
| * </ul> |
| * |
| * @see #dispose() |
| * @since 3.4 |
| */ |
| public Path (Device device, PathData data) { |
| this(device); |
| if (data == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| init(data); |
| } |
| |
| /** |
| * Adds to the receiver a circular or elliptical arc that lies within |
| * the specified rectangular area. |
| * <p> |
| * The resulting arc begins at <code>startAngle</code> and extends |
| * for <code>arcAngle</code> degrees. |
| * 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 |
| * @param y the y coordinate of the upper-left corner of the arc |
| * @param width the width of the arc |
| * @param height the height of the arc |
| * @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 addArc(float x, float y, float width, float height, float startAngle, float arcAngle) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width < 0) { |
| x = x + width; |
| width = -width; |
| } |
| if (height < 0) { |
| y = y + height; |
| height = -height; |
| } |
| if (width == 0 || height == 0 || arcAngle == 0) return; |
| if (width == height) { |
| Gdip.GraphicsPath_AddArc(handle, x, y, width, height, -startAngle, -arcAngle); |
| } else { |
| int /*long*/ path = Gdip.GraphicsPath_new(Gdip.FillModeAlternate); |
| if (path == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| int /*long*/ matrix = Gdip.Matrix_new(width, 0, 0, height, x, y); |
| if (matrix == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Gdip.GraphicsPath_AddArc(path, 0, 0, 1, 1, -startAngle, -arcAngle); |
| Gdip.GraphicsPath_Transform(path, matrix); |
| Gdip.GraphicsPath_AddPath(handle, path, true); |
| Gdip.Matrix_delete(matrix); |
| Gdip.GraphicsPath_delete(path); |
| } |
| Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); |
| } |
| |
| /** |
| * Adds to the receiver the path described by the parameter. |
| * |
| * @param path the path to add to the receiver |
| * |
| * @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> |
| */ |
| public void addPath(Path path) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (path.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| //TODO - expose connect? |
| Gdip.GraphicsPath_AddPath(handle, path.handle, false); |
| currentPoint.X = path.currentPoint.X; |
| currentPoint.Y = path.currentPoint.Y; |
| } |
| |
| /** |
| * Adds to the receiver the rectangle specified by x, y, width and height. |
| * |
| * @param x the x coordinate of the rectangle to add |
| * @param y the y coordinate of the rectangle to add |
| * @param width the width of the rectangle to add |
| * @param height the height of the rectangle to add |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void addRectangle(float x, float y, float width, float height) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| RectF rect = new RectF(); |
| rect.X = x; |
| rect.Y = y; |
| rect.Width = width; |
| rect.Height = height; |
| Gdip.GraphicsPath_AddRectangle(handle, rect); |
| currentPoint.X = x; |
| currentPoint.Y = y; |
| } |
| |
| /** |
| * Adds to the receiver the pattern of glyphs generated by drawing |
| * the given string using the given font starting at the point (x, y). |
| * |
| * @param string the text to use |
| * @param x the x coordinate of the starting point |
| * @param y the y coordinate of the starting point |
| * @param font the font to use |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the font is null</li> |
| * <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 addString(String string, float x, float y, Font font) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (font == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| int length = string.length(); |
| char[] buffer = new char[length]; |
| string.getChars(0, length, buffer, 0); |
| int /*long*/ hDC = device.internal_new_GC(null); |
| int /*long*/ gdipFont = GC.createGdipFont(hDC, font.handle); |
| PointF point = new PointF(); |
| point.X = x - (Gdip.Font_GetSize(gdipFont) / 6); |
| point.Y = y; |
| int /*long*/ family = Gdip.FontFamily_new(); |
| Gdip.Font_GetFamily(gdipFont, family); |
| int style = Gdip.Font_GetStyle(gdipFont); |
| float size = Gdip.Font_GetSize(gdipFont); |
| Gdip.GraphicsPath_AddString(handle, buffer, length, family, style, size, point, 0); |
| Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); |
| Gdip.FontFamily_delete(family); |
| Gdip.Font_delete(gdipFont); |
| device.internal_dispose_GC(hDC, null); |
| } |
| |
| /** |
| * Closes the current sub path by adding to the receiver a line |
| * from the current point of the path back to the starting point |
| * of the sub path. |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void close() { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| Gdip.GraphicsPath_CloseFigure(handle); |
| /* |
| * Feature in GDI+. CloseFigure() does affect the last |
| * point, so GetLastPoint() does not return the starting |
| * point of the subpath after calling CloseFigure(). The |
| * fix is to remember the subpath starting point and use |
| * it instead. |
| */ |
| currentPoint.X = startPoint.X; |
| currentPoint.Y = startPoint.Y; |
| } |
| |
| /** |
| * Returns <code>true</code> if the specified point is contained by |
| * the receiver and false otherwise. |
| * <p> |
| * If outline is <code>true</code>, the point (x, y) checked for containment in |
| * the receiver's outline. If outline is <code>false</code>, the point is |
| * checked to see if it is contained within the bounds of the (closed) area |
| * covered by the receiver. |
| * |
| * @param x the x coordinate of the point to test for containment |
| * @param y the y coordinate of the point to test for containment |
| * @param gc the GC to use when testing for containment |
| * @param outline controls whether to check the outline or contained area of the path |
| * @return <code>true</code> if the path contains the point and <code>false</code> otherwise |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the gc has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public boolean contains(float x, float y, GC gc, boolean outline) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (gc == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (gc.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| //TODO - should use GC transformation |
| gc.initGdip(); |
| gc.checkGC(GC.LINE_CAP | GC.LINE_JOIN | GC.LINE_STYLE | GC.LINE_WIDTH); |
| int mode = OS.GetPolyFillMode(gc.handle) == OS.WINDING ? Gdip.FillModeWinding : Gdip.FillModeAlternate; |
| Gdip.GraphicsPath_SetFillMode(handle, mode); |
| if (outline) { |
| return Gdip.GraphicsPath_IsOutlineVisible(handle, x, y, gc.data.gdipPen, gc.data.gdipGraphics); |
| } else { |
| return Gdip.GraphicsPath_IsVisible(handle, x, y, gc.data.gdipGraphics); |
| } |
| } |
| |
| /** |
| * Adds to the receiver a cubic bezier curve based on the parameters. |
| * |
| * @param cx1 the x coordinate of the first control point of the spline |
| * @param cy1 the y coordinate of the first control of the spline |
| * @param cx2 the x coordinate of the second control of the spline |
| * @param cy2 the y coordinate of the second control of the spline |
| * @param x the x coordinate of the end point of the spline |
| * @param y the y coordinate of the end point of the spline |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void cubicTo(float cx1, float cy1, float cx2, float cy2, float x, float y) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| Gdip.GraphicsPath_AddBezier(handle, currentPoint.X, currentPoint.Y, cx1, cy1, cx2, cy2, x, y); |
| Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); |
| } |
| |
| void destroy() { |
| Gdip.GraphicsPath_delete(handle); |
| handle = 0; |
| } |
| |
| /** |
| * Replaces the first four elements in the parameter with values that |
| * describe the smallest rectangle that will completely contain the |
| * receiver (i.e. the bounding box). |
| * |
| * @param bounds the array to hold the result |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter is too small to hold the bounding box</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void getBounds(float[] bounds) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (bounds == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (bounds.length < 4) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| RectF rect = new RectF(); |
| Gdip.GraphicsPath_GetBounds(handle, rect, 0, 0); |
| bounds[0] = rect.X; |
| bounds[1] = rect.Y; |
| bounds[2] = rect.Width; |
| bounds[3] = rect.Height; |
| } |
| |
| /** |
| * Replaces the first two elements in the parameter with values that |
| * describe the current point of the path. |
| * |
| * @param point the array to hold the result |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the parameter is too small to hold the end point</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void getCurrentPoint(float[] point) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (point == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (point.length < 2) SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| point[0] = currentPoint.X; |
| point[1] = currentPoint.Y; |
| } |
| |
| /** |
| * Returns a device independent representation of the receiver. |
| * |
| * @return the PathData for the receiver |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| * |
| * @see PathData |
| */ |
| public PathData getPathData() { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| int count = Gdip.GraphicsPath_GetPointCount(handle); |
| byte[] gdipTypes = new byte[count]; |
| float[] points = new float[count * 2]; |
| Gdip.GraphicsPath_GetPathTypes(handle, gdipTypes, count); |
| Gdip.GraphicsPath_GetPathPoints(handle, points, count); |
| byte[] types = new byte[count * 2]; |
| int index = 0, typesIndex = 0; |
| while (index < count) { |
| byte type = gdipTypes[index]; |
| boolean close = false; |
| switch (type & Gdip.PathPointTypePathTypeMask) { |
| case Gdip.PathPointTypeStart: |
| types[typesIndex++] = SWT.PATH_MOVE_TO; |
| close = (type & Gdip.PathPointTypeCloseSubpath) != 0; |
| index += 1; |
| break; |
| case Gdip.PathPointTypeLine: |
| types[typesIndex++] = SWT.PATH_LINE_TO; |
| close = (type & Gdip.PathPointTypeCloseSubpath) != 0; |
| index += 1; |
| break; |
| case Gdip.PathPointTypeBezier: |
| types[typesIndex++] = SWT.PATH_CUBIC_TO; |
| close = (gdipTypes[index + 2] & Gdip.PathPointTypeCloseSubpath) != 0; |
| index += 3; |
| break; |
| default: |
| index++; |
| } |
| if (close) { |
| types[typesIndex++] = SWT.PATH_CLOSE; |
| } |
| } |
| if (typesIndex != types.length) { |
| byte[] newTypes = new byte[typesIndex]; |
| System.arraycopy(types, 0, newTypes, 0, typesIndex); |
| types = newTypes; |
| } |
| PathData result = new PathData(); |
| result.types = types; |
| result.points = points; |
| return result; |
| } |
| |
| /** |
| * Adds to the receiver a line from the current point to |
| * the point specified by (x, y). |
| * |
| * @param x the x coordinate of the end of the line to add |
| * @param y the y coordinate of the end of the line to add |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void lineTo(float x, float y) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| Gdip.GraphicsPath_AddLine(handle, currentPoint.X, currentPoint.Y, x, y); |
| Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); |
| } |
| |
| void init(PathData data) { |
| byte[] types = data.types; |
| float[] points = data.points; |
| for (int i = 0, j = 0; i < types.length; i++) { |
| switch (types[i]) { |
| case SWT.PATH_MOVE_TO: |
| moveTo(points[j++], points[j++]); |
| break; |
| case SWT.PATH_LINE_TO: |
| lineTo(points[j++], points[j++]); |
| break; |
| case SWT.PATH_CUBIC_TO: |
| cubicTo(points[j++], points[j++], points[j++], points[j++], points[j++], points[j++]); |
| break; |
| case SWT.PATH_QUAD_TO: |
| quadTo(points[j++], points[j++], points[j++], points[j++]); |
| break; |
| case SWT.PATH_CLOSE: |
| close(); |
| break; |
| default: |
| dispose(); |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| } |
| } |
| |
| /** |
| * Returns <code>true</code> if the Path has been disposed, |
| * and <code>false</code> otherwise. |
| * <p> |
| * This method gets the dispose state for the Path. |
| * When a Path has been disposed, it is an error to |
| * invoke any other method using the Path. |
| * |
| * @return <code>true</code> when the Path is disposed, and <code>false</code> otherwise |
| */ |
| public boolean isDisposed() { |
| return handle == 0; |
| } |
| |
| /** |
| * Sets the current point of the receiver to the point |
| * specified by (x, y). Note that this starts a new |
| * sub path. |
| * |
| * @param x the x coordinate of the new end point |
| * @param y the y coordinate of the new end point |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void moveTo(float x, float y) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| Gdip.GraphicsPath_StartFigure(handle); |
| currentPoint.X = startPoint.X = x; |
| currentPoint.Y = startPoint.Y = y; |
| } |
| |
| /** |
| * Adds to the receiver a quadratic curve based on the parameters. |
| * |
| * @param cx the x coordinate of the control point of the spline |
| * @param cy the y coordinate of the control point of the spline |
| * @param x the x coordinate of the end point of the spline |
| * @param y the y coordinate of the end point of the spline |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
| * </ul> |
| */ |
| public void quadTo(float cx, float cy, float x, float y) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| float cx1 = currentPoint.X + 2 * (cx - currentPoint.X) / 3; |
| float cy1 = currentPoint.Y + 2 * (cy - currentPoint.Y) / 3; |
| float cx2 = cx1 + (x - currentPoint.X) / 3; |
| float cy2 = cy1 + (y - currentPoint.Y) / 3; |
| Gdip.GraphicsPath_AddBezier(handle, currentPoint.X, currentPoint.Y, cx1, cy1, cx2, cy2, x, y); |
| Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); |
| } |
| |
| /** |
| * 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 "Path {*DISPOSED*}"; |
| return "Path {" + handle + "}"; |
| } |
| |
| } |