cocoa merge

1 files changed, 517 insertions, 0 deletions

diff --git a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Path.java b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Path.java
new file mode 100755
index 0000000000..7c7cfa0692
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Path.java
@@ -0,0 +1,517 @@
+/*******************************************************************************
+ * 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.*;
+import org.eclipse.swt.internal.*;
+import org.eclipse.swt.internal.cocoa.*;
+
+/**
+ * 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>
+ * 
+ * @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 NSBezierPath handle;
+
+/**
+ * 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) {
+	if (device == null) device = Device.getDevice();
+	if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+	this.device = device;
+	handle = NSBezierPath.bezierPath();
+	if (handle == null) SWT.error(SWT.ERROR_NO_HANDLES);
+	handle.retain();
+	handle.moveToPoint(new NSPoint());
+	if (device.tracking) device.new_Object(this);
+}
+
+/**
+ * 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);
+	NSAffineTransform transform = NSAffineTransform.transform();
+	transform.translateXBy(x + width / 2f, y + height / 2f);
+	transform.scaleXBy(width / 2f, height / 2f);
+	NSBezierPath path = NSBezierPath.bezierPath();
+	if (arcAngle < 0) {
+		path.appendBezierPathWithArcWithCenter_radius_startAngle_endAngle_(new NSPoint(), 1, -(startAngle + arcAngle) * (float)Compatibility.PI / 180,  -startAngle * (float)Compatibility.PI / 180);
+	} else {
+		path.appendBezierPathWithArcWithCenter_radius_startAngle_endAngle_(new NSPoint(), 1, -startAngle * (float)Compatibility.PI / 180,  -(startAngle + arcAngle) * (float)Compatibility.PI / 180);
+	}
+	path.transformUsingAffineTransform(transform);
+	handle.appendBezierPath(path);
+}
+
+/**
+ * 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);
+	handle.appendBezierPath(path.handle);
+}
+
+/**
+ * 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);
+	NSRect rect = new NSRect();
+	rect.x = x;
+	rect.y = y;
+	rect.width = width;
+	rect.height = height;
+	handle.appendBezierPathWithRect(rect);
+}
+
+/**
+ * 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);
+	NSString str = NSString.stringWith(string);
+	NSTextStorage textStorage = ((NSTextStorage)new NSTextStorage().alloc());
+	textStorage.initWithString_(str);
+	NSLayoutManager layoutManager = (NSLayoutManager)new NSLayoutManager().alloc().init();
+	NSTextContainer textContainer = (NSTextContainer)new NSTextContainer().alloc();
+	NSSize size = new NSSize();
+	size.width = Float.MAX_VALUE;
+	size.height = Float.MAX_VALUE;
+	textContainer.initWithContainerSize(size);
+	textStorage.addLayoutManager(layoutManager);
+	layoutManager.addTextContainer(textContainer);
+	NSRange range = new NSRange();
+	range.length = str.length();
+	textStorage.beginEditing();
+	textStorage.addAttribute(OS.NSFontAttributeName(), font.handle, range);
+	textStorage.endEditing();
+	range = layoutManager.glyphRangeForTextContainer(textContainer);
+	if (range.length != 0) {
+		int glyphs = OS.malloc(4 * range.length * 2);
+		layoutManager.getGlyphs(glyphs, range);
+		NSBezierPath path = NSBezierPath.bezierPath();
+		NSPoint point = new NSPoint();
+		point.x = x;
+		point.y = y;
+		path.moveToPoint(point);
+		path.appendBezierPathWithGlyphs(glyphs, range.length, font.handle);
+		NSAffineTransform transform = NSAffineTransform.transform();
+		transform.scaleXBy(1, -1);
+		transform.translateXBy(0, -(y + textStorage.size().height));
+		path.transformUsingAffineTransform(transform);
+		OS.free(glyphs);
+		handle.appendBezierPath(path);
+	}
+	textContainer.release();
+	layoutManager.release();
+	textStorage.release();
+}
+
+/**
+ * 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);
+	handle.closePath();
+}
+
+/**
+ * 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);
+//	gc.checkGC(GC.LINE_CAP | GC.LINE_JOIN | GC.LINE_STYLE | GC.LINE_WIDTH);
+	//TODO outline
+	NSPoint point = new NSPoint();
+	point.x = x;
+	point.y = y;
+	return handle.containsPoint(point);
+}
+
+/**
+ * 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);
+	NSPoint pt = new NSPoint();
+	pt.x = x;
+	pt.y = y;
+	NSPoint ct1 = new NSPoint();
+	ct1.x = cx1;
+	ct1.y = cy1;
+	NSPoint ct2 = new NSPoint();
+	ct2.x = cx2;
+	ct2.y = cy2;
+	handle.curveToPoint(pt, ct1, ct2);
+}
+
+/**
+ * Disposes of the operating system resources associated with
+ * the Path. Applications must dispose of all Paths that
+ * they allocate.
+ */
+public void dispose() {
+	if (handle == null) return;
+	handle.release();
+	handle = null;
+	if (device.tracking) device.dispose_Object(this);
+	device = null;
+}
+
+/**
+ * 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);
+	NSRect rect = handle.controlPointBounds();
+	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);
+	NSPoint pt = handle.currentPoint();
+	point[0] = pt.x;
+	point[1] = pt.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 = handle.elementCount();
+	int pointCount = 0, typeCount = 0;
+	byte[] types = new byte[count];
+	float[] pointArray = new float[count * 6];
+	int points = OS.malloc(3 * NSPoint.sizeof);
+	if (points == 0) SWT.error(SWT.ERROR_NO_HANDLES);
+	NSPoint pt = new NSPoint();
+	for (int i = 0; i < count; i++) {
+		int element = handle.elementAtIndex_associatedPoints_(i, points);
+		switch (element) {
+			case OS.NSMoveToBezierPathElement:
+				types[typeCount++] = SWT.PATH_MOVE_TO;
+				OS.memmove(pt, points, NSPoint.sizeof);
+				pointArray[pointCount++] = (int)pt.x;
+				pointArray[pointCount++] = (int)pt.y;
+				break;
+			case OS.NSLineToBezierPathElement:
+				types[typeCount++] = SWT.PATH_LINE_TO;
+				OS.memmove(pt, points, NSPoint.sizeof);
+				pointArray[pointCount++] = (int)pt.x;
+				pointArray[pointCount++] = (int)pt.y;
+				break;
+			case OS.NSCurveToBezierPathElement:
+				types[typeCount++] = SWT.PATH_CUBIC_TO;
+				OS.memmove(pt, points, NSPoint.sizeof);
+				pointArray[pointCount++] = (int)pt.x;
+				pointArray[pointCount++] = (int)pt.y;
+				OS.memmove(pt, points + NSPoint.sizeof, NSPoint.sizeof);
+				pointArray[pointCount++] = (int)pt.x;
+				pointArray[pointCount++] = (int)pt.y;
+				OS.memmove(pt, points + NSPoint.sizeof + NSPoint.sizeof, NSPoint.sizeof);
+				pointArray[pointCount++] = (int)pt.x;
+				pointArray[pointCount++] = (int)pt.y;
+				break;
+			case OS.NSClosePathBezierPathElement:
+				types[typeCount++] = SWT.PATH_CLOSE;
+				break;
+		}
+	}
+	OS.free(points);
+	if (pointCount != pointArray.length) {
+		float[] temp = new float[pointCount];
+		System.arraycopy(pointArray, 0, temp, 0, pointCount);
+		pointArray = temp;
+	}
+	PathData data = new PathData();
+	data.types = types;
+	data.points = pointArray;
+	return data;
+}
+
+/**
+ * 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 == null;
+}
+
+/**
+ * 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);
+	NSPoint pt = new NSPoint();
+	pt.x = x;
+	pt.y = y;
+	handle.lineToPoint(pt);
+}
+
+/**
+ * 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);
+	NSPoint pt = new NSPoint();
+	pt.x = x;
+	pt.y = y;
+	handle.moveToPoint(pt);
+
+}
+
+/**
+ * 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);
+	NSPoint pt = new NSPoint();
+	pt.x = x;
+	pt.y = y;
+	NSPoint ct = new NSPoint();
+	ct.x = cx;
+	ct.y = cy;
+	handle.curveToPoint(pt, ct, ct);
+}
+
+/**
+ * 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 + "}";
+}
+
+}