FCL/sf/app/jrt: comparison javauis/eswt_qt/org.eclipse.swt/Eclipse_SWT_PI/qt/org/eclipse/swt/internal/qt/graphics/GraphicsContext.java

equal deleted inserted replaced

-:e8e63152f320
+:2a9601315dfc
+/*******************************************************************************
+* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+* 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:
+*     Nokia Corporation - initial implementation
+*******************************************************************************/
+package org.eclipse.swt.internal.qt.graphics;
+import java.util.Vector;
+import org.eclipse.swt.widgets.Internal_PackageSupport;
+import org.eclipse.swt.widgets.Widget;
+public final class GraphicsContext {
+// These must be in sync with graphics.h
+// Rectangle index
+/**
+* Rectangle data array's <code>x</code> index
+* @see #getClip
+* @see #getTextBoundingBox
+*/
+public final static int RECT_X = 0;
+/**
+* Rectangle data array's <code>y</code> index
+* @see #getClip
+* @see #getTextBoundingBox
+*/
+public final static int RECT_Y = 1;
+/**
+* Rectangle data array's <code>width</code> index
+* @see #getClip
+* @see #getTextBoundingBox
+*/
+public final static int RECT_WIDTH = 2;
+/**
+* Rectangle data array's <code>height</code> index
+* @see #getClip
+* @see #getTextBoundingBox
+*/
+public final static int RECT_HEIGHT = 3;
+// Blending modes
+/**
+* Constant for Source blending mode. The destination's color and
+* alpha values are replaced with those of source.
+*/
+public static final int BLENDING_MODE_SRC = 10;
+/**
+* Constant for Source over blending mode. The source is composed over destination.
+*/
+public static final int BLENDING_MODE_SRC_OVER = 11;
+/**
+* Constant for XOR blending mode. The resulting color in the destination is
+* the exclusive or of the color values in the source and the destination.
+*/
+public static final int BLENDING_MODE_XOR = 12;
+// Stroke styles
+/**
+* Stroke style is not set.
+*/
+public static final int STROKE_NO = 0;
+/**
+* Solid stroke.
+*/
+public static final int STROKE_SOLID = 1;
+/**
+* Dotted stroke
+*/
+public static final int STROKE_DOT = 2;
+/**
+* Dash stroke
+*/
+public static final int STROKE_DASH = 3;
+/**
+* Dash-dot stroke
+*/
+public static final int STROKE_DASH_DOT = 4;
+/**
+* Dash-dot-dot stroke
+*/
+public static final int STROKE_DASH_DOT_DOT = 5;
+// Text flags
+/**
+* One line. Whitespaces are threated as spaces.
+* NOTE: TEXT_SINGLE_LINE and TEXT_WORD_WRAP cannot be combined.
+* @see TEXT_WORD_WRAP
+*/
+public static final int TEXT_SINGLE_LINE = 0x0100;
+/**
+* Prints outside of the given bounds if needed
+*/
+public static final int TEXT_DONT_CLIP = 0x0200;
+/**
+* Expand tabs
+*/
+public static final int TEXT_EXPAND_TABS = 0x0400;
+/**
+* Underline the mnemonic character
+*/
+public static final int TEXT_SHOW_MNEMONIC = 0x0800;
+/**
+* Breaks lines at appropriate points
+* NOTE: TEXT_SINGLE_LINE and TEXT_WORD_WRAP cannot be combined.
+* @see TEXT_SINGLE_LINE
+*/
+public static final int TEXT_WORD_WRAP = 0x1000;
+/**
+* Breaks lines anywhere, even within words.
+*/
+public static final int TEXT_WRAP_ANYWHERE = 0x2000;
+/**
+* Same as OS_TEXT_SHOW_MNEMONIC but no underlines.
+* @see OS_TEXT_SHOW_MNEMONIC
+*/
+public static final int TEXT_HIDE_MNEMONIC = 0x8000;
+/**
+* Behaves like a "hidden" text - not printed.
+*/
+public static final int TEXT_DONT_PRINT = 0x4000;
+/**
+* Trailing whitespace not deleted automatically.
+*/
+public static final int TEXT_INCLUDE_TRAILING_SPACES = 0x08000000;
+/**
+* Ensures that text lines are justified.
+*/
+public static final int TEXT_JUSTIFICATIONFORCED = 0x10000;
+// Alignment flags
+/**
+* Aligns with the left edge.
+*/
+public static final int ALIGNMENT_LEFT = 0x0001;
+/**
+* Aligns with the right edge.
+*/
+public static final int ALIGNMENT_RIGHT = 0x0002;
+/**
+* Centers horizontally in the available space.
+*/
+public static final int ALIGNMENT_HCENTER = 0x0004;
+/**
+* Justifies the text in the available space.
+*/
+public static final int ALIGNMENT_JUSTIFY = 0x0008;
+/**
+* Aligns with the top.
+*/
+public static final int ALIGNMENT_TOP = 0x0020;
+/**
+* Aligns with the bottom.
+*/
+public static final int ALIGNMENT_BOTTOM =    0x0040;
+/**
+* Centers vertically in the available space.
+*/
+public static final int ALIGNMENT_VCENTER = 0x0080;
+// package constants
+/**
+* Specifies no target
+*/
+static final int TARGET_NONE = 0;
+/**
+* Specifies native target type QWidget.
+*/
+static final int TARGET_WIDGET = 1;
+/**
+* Specifies native target type Image.
+*/
+static final int TARGET_IMAGE = 2;
+/**
+* Specifies native target type Buffer.
+*/
+static final int TARGET_NATIVE_COMMAND_BUFFER = 3;
+/**
+* Specifies Java command buffer target
+*/
+static final int TARGET_WINDOWSURFACE = 4;
+/**
+* Specifies Java command buffer target, not valid in native target types
+*/
+static final int TARGET_JAVA_COMMAND_BUFFER = 5;
+/**
+* Native peer handle
+*/
+int handle = -1;
+/**
+* private members
+*/
+private boolean disposed;
+private RenderingTarget targetData = null;
+/**
+* Constructor
+*/
+public GraphicsContext() {
+Utils.validateUiThread();
+handle = OS.graphicsContext_init();
+targetData = new RenderingTarget();
+disposed = false;
+}
+/**
+* Gets the windowsurface of currently bound target.
+* Windowsurface is the surface where external graphics APIs can render, e.g m2g and m3g.
+* @return windowSurface if currently bound target has one, otherwise null
+*/
+public WindowSurface getWindowSurface() {
+checkState();
+// buffers don't have a window surface
+if ((targetData.type == TARGET_NATIVE_COMMAND_BUFFER) ||(targetData.type == TARGET_JAVA_COMMAND_BUFFER) ) {
+return null;
+}
+// Get the current target that is bound
+Object target = targetData.target;
+// Only shells have window surface so figure out if target is shell,
+// and if not get the shell of child widget
+if (targetData.type == TARGET_WIDGET) {
+if (!(target instanceof org.eclipse.swt.widgets.Shell)) {
+target = ((org.eclipse.swt.widgets.Control)target).getShell();
+}
+}
+SurfaceCache cache = SurfaceCache.getInstance();
+// check surface cache for existing windowsurface for current target
+WindowSurface surface = cache.getSurface(target);
+// If not found in cache we need to create new one
+// and store that to cache for future use
+if (surface == null) {
+surface = new WindowSurface(OS.graphicsContext_get_windowsurface(handle));
+if (targetData.type == TARGET_WIDGET) {
+// Add to cache and let it add dispose listener for automatic cleanup
+cache.addSurface(surface, target, true);
+} else {
+// Image associated entry's are deleted when Image dispose is called
+cache.addSurface(surface, target, false);
+}
+return surface;
+} else {
+return surface;
+}
+}
+void bindTarget(java.lang.Object target, int type, int handle, int bufferFlushTargetHandle) {
+Utils.validateUiThread();
+// validate state
+if(disposed) {
+throw new IllegalStateException("GraphicsContext already disposed");
+}
+if (isActive()) {
+throw new IllegalStateException("Already bound to target: " + targetData.target);
+}
+// Reset iTarget before setting new target
+targetData.reset();
+// call for actual bind, this may throw an exception
+// especially when trying to bind a target which has been bound already
+// this is skipped if target is java command buffer
+if (type != TARGET_JAVA_COMMAND_BUFFER) {
+doBind(handle, type, target, bufferFlushTargetHandle);
+} else {
+if(((JavaCommandBuffer)target).isBound()) {
+throw new IllegalStateException("Target already bound by other gc instance");
+}
+targetData.commandBuffer = (JavaCommandBuffer)target;
+targetData.isJavaCommandBuffer = true;
+}
+// store target
+targetData.handle = handle;
+targetData.type = type;
+targetData.target = target;
+// If target is Image, inform that it is being bound.
+// this is needed in case image is disposed before
+// releaseTarget() is called
+if(type == TARGET_IMAGE) {
+((org.eclipse.swt.internal.qt.graphics.Image)target).notifyBind(this);
+}
+}
+/**
+* Binds given SWT Control as the rendering target of this GraphicsContext.
+*
+* @param target SWT Control
+*
+* @throws java.lang.IllegalStateException if this GraphicsContext already has a rendering target
+* @throws java.lang.IllegalStateException if given target is already bound by some other GC instance
+* @throws java.lang.IllegalStateException if GraphicsContext has already been disposed
+* @throws java.lang.NullPointerException if given target is null
+* @throws java.lang.IllegalArgumentException if given target cannot be bound
+* @throws java.lang.IllegalArgumentException if given target is already disposed
+*/
+public void bindTarget(org.eclipse.swt.widgets.Control target) {
+if(target == null) {
+	throw new NullPointerException("target is null");
+}
+if(target.isDisposed())
+throw new IllegalArgumentException("Target already disposed");
+bindTarget(target, TARGET_WIDGET, handle(target), 0);
+}
+/**
+* Binds given SWT Display as the rendering target of this GraphicsContext.
+*
+* @param target SWT Display
+*
+* @throws java.lang.IllegalStateException if this GraphicsContext already has a rendering target
+* @throws java.lang.IllegalStateException if given target is already bound by some other GC instance
+* @throws java.lang.IllegalStateException if GraphicsContext has already been disposed
+* @throws java.lang.NullPointerException if given target is null
+* @throws java.lang.IllegalArgumentException if given target cannot be bound
+* @throws java.lang.IllegalArgumentException if given target is already disposed
+*/
+public void bindTarget(org.eclipse.swt.widgets.Display target) {
+if(target == null) {
+	throw new NullPointerException("target is null");
+}
+if(target.isDisposed())
+throw new IllegalArgumentException("Target already disposed");
+int handle = org.eclipse.swt.internal.qt.OS.QApplication_desktop();
+bindTarget(target, TARGET_WIDGET, handle, 0);
+}
+/**
+* Binds given org.eclipse.swt.internal.qt.graphics.Image as the rendering target of this GraphicsContext.
+*
+* @param target The image
+*
+* @throws java.lang.IllegalStateException if this GraphicsContext already has a rendering target
+* @throws java.lang.IllegalStateException if given target is already bound by some other GC instance
+* @throws java.lang.IllegalStateException if GraphicsContext has already been disposed
+* @throws java.lang.NullPointerException if given target is null
+* @throws java.lang.IllegalArgumentException if given target cannot be bound
+* @throws java.lang.IllegalArgumentException if given target is already disposed
+*/
+public void bindTarget(org.eclipse.swt.internal.qt.graphics.Image target) {
+if(target == null) {
+	throw new NullPointerException("target is null");
+}
+if(target.isDisposed())
+throw new IllegalArgumentException("Target already disposed");
+bindTarget(target, TARGET_IMAGE, target.handle, 0);
+}
+/**
+* Binds given org.eclipse.swt.internal.qt.graphics.Buffer as the rendering target of this GraphicsContext.
+*
+* @param target The buffer
+* @param flushTargetHandle The actual target where the buffer will be flushed to
+*
+* @throws java.lang.IllegalStateException if this GraphicsContext already has a rendering target
+* @throws java.lang.IllegalStateException if given target is already bound by some other GC instance
+* @throws java.lang.IllegalStateException if CraphicsContext has already been disposed
+* @throws java.lang.NullPointerException if given target is null
+* @throws java.lang.NullPointerException if given flushTarget is null
+* @throws java.lang.IllegalArgumentException if given target cannot be bound
+* @throws java.lang.IllegalArgumentException if given target is already disposed
+*/
+public void bindTarget(org.eclipse.swt.internal.qt.graphics.NativeCommandBuffer target, org.eclipse.swt.widgets.Control flushTarget) {
+if(target == null) {
+	throw new NullPointerException("target is null");
+}
+if(flushTarget == null) {
+	throw new NullPointerException("flushTarget is null");
+}
+if(target.isDisposed())
+throw new IllegalArgumentException("Target already disposed");
+if(flushTarget.isDisposed())
+throw new IllegalArgumentException("Buffer flush target already disposed");
+bindTarget(target, TARGET_NATIVE_COMMAND_BUFFER, target.handle, handle(flushTarget));
+}
+/**
+* Binds given org.eclipse.swt.internal.qt.graphics.CommandBuffer as the rendering target of this GraphicsContext.
+* When JavaCommandBuffer is set as rendering target only one way methods, i.e. draw and setters are supported.
+* See JavaCommanduffer implementation for details of what operations are supported.
+*
+* @param target The buffer where commands are recorded
+* @throws java.lang.IllegalStateException if this GraphicsContext already has a rendering target
+* @throws java.lang.IllegalStateException if given target is already bound by some other GC instance
+* @throws java.lang.IllegalStateException if CraphicsContext has already been disposed
+* @throws java.lang.NullPointerException if given target is null
+*/
+public void bindTarget(org.eclipse.swt.internal.qt.graphics.JavaCommandBuffer target) {
+if(target == null)
+throw new NullPointerException("target is null");
+bindTarget(target, TARGET_JAVA_COMMAND_BUFFER, 0, 0);
+}
+/**
+* Don't use. This is here only for testing purposes.
+* @deprecated Buffer flush target must be given be given when binding to a buffer.
+* @see bindTarget(org.eclipse.swt.internal.qt.graphics.Buffer target, org.eclipse.swt.widgets.Control flushTarget)
+*/
+public void bindTarget(org.eclipse.swt.internal.qt.graphics.NativeCommandBuffer target) {
+if(target == null) {
+	throw new NullPointerException("Target is null");
+}
+if(target.isDisposed()) {
+throw new IllegalArgumentException("target already disposed");
+}
+bindTarget(target, TARGET_NATIVE_COMMAND_BUFFER, target.handle, 0);
+}
+/**
+* Binds given org.eclipse.swt.internal.qt.graphics.WindowSurface as the rendering target of this GraphicsContext.
+*
+* @param target The WindowSurface instance to be bound
+* @throws java.lang.IllegalStateException if this GraphicsContext already has a rendering target
+* @throws java.lang.IllegalStateException if given target is already bound by some other GC instance
+* @throws java.lang.IllegalStateException if CraphicsContext has already been disposed
+* @throws java.lang.NullPointerException if given target is null
+* @throws java.lang.IllegalArgumentException if given target is already disposed
+*/
+public void bindTarget(org.eclipse.swt.internal.qt.graphics.WindowSurface target) {
+if(target == null) {
+	throw new NullPointerException("target is null");
+}
+	if(target.isDisposed()) {
+throw new IllegalArgumentException("target already disposed");
+}
+	bindTarget(target, TARGET_WINDOWSURFACE, target.handle, 0);
+}
+/**
+* Get target to which current GraphicsContext is bound to
+*
+* @return Object to which GraphicsContext is bound to or null if there is no target
+*/
+public Object getBoundTarget() {
+checkState();
+return targetData.target;
+}
+/**
+* Flushes all pending draw operations and releases current rending target.
+* If no target is bound, request is silently ingored.
+*/
+public void releaseTarget() {
+Utils.validateUiThread();
+if (disposed) {
+throw new IllegalStateException("GraphicsContext already disposed");
+}
+if (targetData.target != null) {
+// In case of java command buffer no native calls needed
+if (targetData.type == TARGET_JAVA_COMMAND_BUFFER) {
+targetData.commandBuffer.release();
+targetData.reset();
+return;
+}
+// call native release
+OS.graphicsContext_releaseTarget(handle);
+// if target is Image notify about release
+if(targetData.type == TARGET_IMAGE) {
+((org.eclipse.swt.internal.qt.graphics.Image)targetData.target).notifyRelease();
+}
+// reset target data
+targetData.reset();
+} else {
+//ignore, i.e. no need to throw an exception
+}
+}
+/**
+* Checks if target is already bound by some other gc instance and does
+* native bind operation.
+*
+* @param gc The GraphicsContext doing the binding
+* @throws IllegalStateException if target is found in the list before adding it,
+* i.e. it is already being painted by some other gc.
+*/
+private void doBind(int targetHandle, int targetType, java.lang.Object target, int bufferFlushTargetHandle) {
+// call native bind. In case this fails the native peer throws an exception
+// and resets state automatically, i.e. there no need to rewind from here
+OS.graphicsContext_bindTarget(handle, targetHandle, targetType, bufferFlushTargetHandle);
+}
+/**
+* Renders all draw commands stored in given buffer to currently bound target.
+*
+* @param buffer The buffer to be processed
+* @throws NullPointerException If buffer is null
+* @throws IllegalArgumentException If buffer has been already disposed
+*/
+public void render(NativeCommandBuffer buffer) {
+checkState();
+if(buffer == null) {
+throw new NullPointerException("buffer is null");
+}
+if(buffer.isDisposed()) {
+throw new IllegalArgumentException("buffer already disposed");
+}
+OS.graphicsContext_render(handle, buffer.handle);
+}
+/**
+* Renders all draw commands stored in given CommandBuffer to currently bound target.
+* Note that JavaCommandBuffer can be rendered only once as some of the large data objects placed in
+* the buffer are freed right after they have been processed.
+*
+* @param buffer The CommandBuffer to be processed
+* @throws NullPointerException If CommandBuffer is null
+*/
+public void render(JavaCommandBuffer buffer) {
+checkState();
+if(buffer == null) {
+throw new NullPointerException("buffer is null");
+}
+// if buffer does not contain data do nothing
+if(buffer.containsData()) {
+processBuffer(buffer);
+}
+}
+/**
+* Copies rectangular area from currently bound target to given image target.
+* The copy rectangle top left corned is defined by x and y and bottom right corner
+* by image width and height.
+*
+* @param target The image to copy into
+* @param x The x coordinate of top left corner copy area
+* @param y The y coordinate of top left corner copy area
+* @throws NullPointerException if Image target is null
+* @throws IllegalStateException if no target is bound
+*/
+public void copyArea(Image target, int x, int y) {
+checkState();
+if (target == null) {
+throw new NullPointerException("Target image is null");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.copyArea(target, x, y);
+} else {
+OS.graphicsContext_copyArea(handle, target.handle, x, y);
+}
+}
+/**
+* Copies rectangular area within currently bound target from source
+* location to destination location.
+*
+* @param srcX The top left x coordinate of source rectangle
+* @param srcY The top left y coordinate of source rectangle
+* @param width The width of source rectangle
+* @param height The height of source rectangle
+* @param destX The top left x coordinate for the copy
+* @param destY The top left y coordinate for the copy
+* @throws IllegalStateException if no target is bound
+*/
+public void copyArea(int srcX, int srcY, int width, int height, int destX, int destY) {
+copyArea(srcX, srcY, width, height, destX, destY, false);
+}
+/**
+* Copies rectangular area within currently bound target from source
+* location to destination location.
+*
+* @param srcX The top left x coordinate of source rectangle
+* @param srcY The top left y coordinate of source rectangle
+* @param width The width of source rectangle
+* @param height The height of source rectangle
+* @param destX The top left x coordinate for the copy
+* @param destY The top left y coordinate for the copy
+* @param paint If to generate paint events for the new and obscured areas
+* @throws IllegalStateException if no target is bound
+*/
+public void copyArea(int srcX, int srcY, int width, int height, int destX, int destY, boolean paint) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.copyArea(srcX, srcY, width, height, destX, destY, paint);
+} else {
+OS.graphicsContext_copyArea(handle, srcX, srcY, width, height, destX, destY, paint);
+}
+}
+/**
+* Draws outline of elliptical arc within specified rectangle using foreground color.
+* Arc is drawn counterclockwise.
+*
+* @param x The x coordinate of top left corner of arc rectangle
+* @param y The y coordinate of top left corner of arc rectangle
+* @param width The width of arc rectangle
+* @param height The height of arc rectangle
+* @param startAngle The starting angle for arc
+* @param arcAngle The span angle for arc
+* @throws IllegalStateException if no target is bound
+*/
+public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawArc(x, y, width, height, startAngle, arcAngle);
+} else {
+OS.graphicsContext_drawArc(handle, x, y, width, height, startAngle, arcAngle);
+}
+}
+/**
+* Draws an ellipse specified by rectangle using foreground color.
+*
+* @param x The x coordinate of top left corner of ellipse rectangle
+* @param y The y coordinate of top left corner of ellipse rectangle
+* @param width The width of ellipse rectangle
+* @param height The height of ellipse rectangle
+* @throws IllegalStateException if no target is bound
+*/
+public void drawEllipse(int x, int y, int width, int height) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawEllipse(x, y, width, height);
+} else {
+OS.graphicsContext_drawEllipse(handle, x, y, width, height);
+}
+}
+public void drawFocus(int x, int y, int width, int height) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawFocus(x, y, width, height);
+} else {
+OS.graphicsContext_drawFocus(handle, x, y, width, height);
+}
+}
+/**
+* Draws given image to specified location.
+*
+* @param img The image to draw
+* @param x The x coordinate of top left corner where to draw image
+* @param y The y coordinate of top left corner where to draw image
+* @throws NullPointerException if Image is null
+* @throws IllegalStateException if no target is bound
+*/
+public void drawImage(Image img, int x, int y) {
+checkState();
+if (img == null) {
+throw new NullPointerException("Image is null");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawImage(img, x, y);
+} else {
+OS.graphicsContext_drawImage(handle, img.handle, x, y);
+}
+}
+/**
+* Draws given image to specified location.
+*
+* @param img The image to draw
+* @param tx The top-left x coordinate in image that is to be drawn onto
+* @param ty The top-left y coordinate in image that is to be drawn onto
+* @param tw The width of the image that is to be drawn onto.
+* @param th The heigth of the image that is to be drawn onto.
+* @param sx The top-left x coordinate in image that is to be drawn
+* @param sy The top-left y coordinate in image that is to be drawn
+* @param sw The width of the image that is to be drawn.
+* @param sh The heigth of the image that is to be drawn.
+* @throws NullPointerException if Image is null
+* @throws IllegalStateException if no target is bound
+*/
+public void drawImage(Image img,
+int tx, int ty, int tw, int th,
+int sx, int sy, int sw, int sh) {
+checkState();
+if (img == null) {
+throw new NullPointerException("Image is null");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawImage(img, tx, ty, tw, th, sx, sy, sw, sh, Image.TRANS_NONE);
+} else {
+OS.graphicsContext_drawImage(handle, img.handle, tx, ty, tw, th, sx, sy, sw, sh, Image.TRANS_NONE);
+}
+}
+/**
+* Draws given image to specified location.
+*
+* @param img The image to draw
+* @param tx The top-left x coordinate in image that is to be drawn onto
+* @param ty The top-left y coordinate in image that is to be drawn onto
+* @param tw The width of the image that is to be drawn onto.
+* @param th The heigth of the image that is to be drawn onto.
+* @param sx The top-left x coordinate in image that is to be drawn
+* @param sy The top-left y coordinate in image that is to be drawn
+* @param sw The width of the image that is to be drawn.
+* @param sh The heigth of the image that is to be drawn.
+* @param manipulation transformation to be applied to region to be drawn, one of Image.TRANS_* definitions
+* @throws NullPointerException if Image is null
+* @throws IllegalArgumentException if manipulation is invalid
+* @throws IllegalStateException if no target is bound
+*/
+public void drawImage(Image img,
+int tx, int ty, int tw, int th,
+int sx, int sy, int sw, int sh, int manipulation) {
+checkState();
+if (img == null) {
+throw new NullPointerException("Image is null");
+}
+if (!isManipulationValid(manipulation)) {
+throw new IllegalArgumentException("Invalid manipulation");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawImage(img, tx, ty, tw, th, sx, sy, sw, sh, manipulation);
+} else {
+OS.graphicsContext_drawImage(handle, img.handle, tx, ty, tw, th, sx, sy, sw, sh, manipulation);
+}
+}
+/**
+* Draws a line between defined points using foreground color.
+*
+* @param x1 The x coordinate of staring point
+* @param y1 The y coordinate of staring point
+* @param x2 The x coordinate of ending point
+* @param y2 The y coordinate of ending point
+* @throws IllegalStateException if no target is bound
+*/
+public void drawLine(int x1, int y1, int x2, int y2) {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawLine(x1, y1, x2, y2);
+} else {
+OS.graphicsContext_drawLine(handle, x1, y1, x2, y2);
+}
+}
+/**
+* Draws a point to specified location using foreground color.
+*
+* @param x The x coordinate to draw the point
+* @param y The y coordinate to draw the point
+* @throws IllegalStateException if no target is bound
+*/
+public void drawPoint(int x, int y) {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawPoint(x, y);
+} else {
+OS.graphicsContext_drawPoint(handle, x, y);
+}
+}
+/**
+* Draws a closed polygon which is defined integer array of coorinates, using foreground color.
+* Lines are drawn between each consecutive x,y pairs and between first and last point.
+*
+* @param pointArray An array alternating x and y values which are the verices of the polygon
+* @throws NullPointerException if <code>pointArray</code> is null
+* @throws IllegalStateException if no target is bound
+*/
+public void drawPolygon(int[] pointArray)  {
+checkState();
+if (pointArray == null) {
+throw new NullPointerException("pointaArray is null");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawPolygon(pointArray);
+} else {
+OS.graphicsContext_drawPolygon(handle, pointArray);
+}
+}
+/**
+* Draws polyline which is defined integer array of coorinates, using foreground color.
+* Lines are drawn between each consecutive x,y pairs, but not between first and last coordinate.
+*
+* @param pointArray An array alternating x and y values which are the corners of the polyline
+* @throws NullPointerException if <code>pointArray</code> is null
+* @throws IllegalStateException if no target is bound
+*/
+public void drawPolyline(int[] pointArray)  {
+checkState();
+if (pointArray == null) {
+throw new NullPointerException("pointaArray is null");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawPolyline(pointArray);
+} else {
+OS.graphicsContext_drawPolyline(handle, pointArray);
+}
+}
+/**
+* Draws outline rectangle specified by the arguments using foreground color.
+*
+* @param x The x coordinate of top left corner of rectangle
+* @param y The y coordinate of top left corner of rectangle
+* @param width The width of rectangle
+* @param height The height of rectangle
+* @throws IllegalStateException if no target is bound
+*/
+public void drawRect(int x, int y, int width, int height) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawRect(x, y, width, height);
+} else {
+OS.graphicsContext_drawRect(handle, x, y, width, height);
+}
+}
+/**
+* Draws a series of RGB+transparency values to specified region
+*
+* Scanlength can be negative which results in reading <code>rgbData</code> array in reverse direction
+*
+* @param rgbData an array or ARGB values in format #AARRGGBB
+* @param offset the array index of the first ARGB value
+* @param scanlenght the relative arra offset between consecutive rows in the <code>rgbData</code> array
+* @param x the horizontal location of the region to be rendered
+* @param y the vertical location of the region to be rendered
+* @param width the width of the region to be rendered
+* @param height the height of the region to be rendered
+* @param processAlpha <code>true</code> if <code>rgbData</code> has an alpha channel, <code>false</code> if all pixels are fully opaque
+* @param manipulation transformation to be applied, one of Image.TRANS_* definitions
+* @throws NullPointerException if <code>rgbData</code> is null
+* @throws IllegalArgumentException if manipulation is invalid
+* @throws ArrayIndexOutOfBoundsException if operation will attempt to access elements outside the range of <code>rgbData</code> array
+* @throws IllegalStateException if no target is bound
+*/
+public void drawRGB(int[] rgbData, int offset, int scanlength, int x, int y, int width, int height, boolean processAlpha, int manipulation) {
+checkState();
+if(rgbData == null) {
+throw new NullPointerException("rgbData is null");
+}
+// check most obvious cases where we end up outside array bounds and abort
+// native peer will throw also exception if operation goes outside of array bounds
+if((offset < 0) || (rgbData.length < offset + width) ) {
+throw new ArrayIndexOutOfBoundsException();
+}
+if (!isManipulationValid(manipulation)) {
+throw new IllegalArgumentException("Invalid manipulation");
+}
+if(scanlength == 0) {
+return;
+}
+if(width <= 0 || height <= 0) {
+return;
+}
+if(Math.abs(scanlength) < width) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawRGB(rgbData, offset, scanlength, x, y, width, height, processAlpha, manipulation);
+} else {
+OS.graphicsContext_drawRGB(handle, rgbData, offset, scanlength, x, y, width, height, processAlpha, manipulation);
+}
+}
+/**
+* Draws a series of RGB+transparency values to specified region
+*
+* Scanlength can be negative which results in reading <code>rgbData</code> array in reverse direction
+*
+* @param rgbData an array or ARGB values in format #AARRGGBB
+* @param offset the array index of the first ARGB value
+* @param scanlenght the relative arra offset between consecutive rows in the <code>rgbData</code> array
+* @param x the horizontal location of the region to be rendered
+* @param y the vertical location of the region to be rendered
+* @param width the width of the region to be rendered
+* @param height the height of the region to be rendered
+* @param processAlpha <code>true</code> if <code>rgbData</code> has an alpha channel, <code>false</code> if all pixels are fully opaque
+* @throws NullPointerException if <code>rgbData</code> is null
+* @throws ArrayIndexOutOfBoundsException if operation will attempt to access elements outside the range of <code>rgbData</code> array
+* @throws IllegalStateException if no target is bound
+*/
+public void drawRGB(int[] rgbData, int offset, int scanlength, int x, int y, int width, int height, boolean processAlpha) {
+checkState();
+drawRGB(rgbData, offset, scanlength, x, y, width, height, processAlpha, Image.TRANS_NONE);
+}
+/**
+* Draws a series of RGB+transparency values to specified region
+*
+* Scanlength can be negative which results in reading <code>rgbData</code> array in reverse direction
+*
+* @param rgbData an array or RGB values in format 1 bit per pixel
+* @param transparencyMask an array of mask values
+* @param offset the array index of the first ARGB value
+* @param scanlenght the relative arra offset between consecutive rows in the <code>rgbData</code> array
+* @param x the horizontal location of the region to be rendered
+* @param y the vertical location of the region to be rendered
+* @param width the width of the region to be rendered
+* @param height the height of the region to be rendered
+* @param manipulation transformation to be applied, one of Image.TRANS_* definitions
+* @throws NullPointerException if <code>rgbData</code> is null
+* @throws IllegalArgumentException if manipulation is invalid
+* @throws ArrayIndexOutOfBoundsException if operation will attempt to access elemens outside the range of <code>rgbData</code> array
+* @throws IllegalStateException if no target is bound
+*/
+public void drawRGB(byte[] rgbData, byte[] transparencyMask,int offset, int scanlength, int x, int y, int width, int height, int manipulation, int format) {
+checkState();
+if(rgbData == null) {
+throw new NullPointerException("rgbData is null");
+}
+// check most obvious cases where we end up outside array bounds and abort
+// native peer will throw also exception if operation goes outside of array bounds
+if((offset < 0) || (rgbData.length < offset + width) ) {
+throw new ArrayIndexOutOfBoundsException();
+}
+if (!isManipulationValid(manipulation)) {
+throw new IllegalArgumentException("Invalid manipulation");
+}
+if(scanlength == 0) {
+return;
+}
+if(width <= 0 || height <= 0) {
+return;
+}
+if(Math.abs(scanlength) < width) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawRGB(rgbData, transparencyMask, offset, scanlength, x, y, width, height, manipulation, format);
+} else {
+OS.graphicsContext_drawRGB(handle, rgbData, transparencyMask, offset, scanlength, x, y, width, height, manipulation, format);
+}
+}
+/**
+* Draws a series of RGB+transparency values to specified region
+*
+* Scanlength can be negative which results in reading <code>rgbData</code> array in reverse direction
+*
+* @param rgbData an array or ARGB values in format #AARRGGBB
+* @param offset the array index of the first ARGB value
+* @param scanlenght the relative arra offset between consecutive rows in the <code>rgbData</code> array
+* @param x the horizontal location of the region to be rendered
+* @param y the vertical location of the region to be rendered
+* @param width the width of the region to be rendered
+* @param height the height of the region to be rendered
+* @param processAlpha <code>true</code> if <code>rgbData</code> has an alpha channel, <code>false</code> if all pixels are fully opaque
+* @param manipulation transformation to be applied, one of Image.TRANS_* definitions
+* @throws NullPointerException if <code>rgbData</code> is null
+* @throws IllegalArgumentException if manipulation is invalid
+* @throws ArrayIndexOutOfBoundsException if operation will attempt to access elemens outside the range of <code>rgbData</code> array
+* @throws IllegalStateException if no target is bound
+*/
+public void drawRGB(short[] rgbData, int offset, int scanlength, int x, int y, int width, int height, boolean processAlpha, int manipulation, int format) {
+checkState();
+if(rgbData == null) {
+throw new NullPointerException("rgbData is null");
+}
+// check most obvious cases where we end up outside array bounds and abort
+// native peer will throw also exception if operation goes outside of array bounds
+if((offset < 0) || (rgbData.length < offset + width) ) {
+throw new ArrayIndexOutOfBoundsException();
+}
+if (!isManipulationValid(manipulation)) {
+throw new IllegalArgumentException("Invalid manipulation");
+}
+if(scanlength == 0) {
+return;
+}
+if(width <= 0 || height <= 0) {
+return;
+}
+if(Math.abs(scanlength) < width) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawRGB(rgbData, offset, scanlength, x, y, width, height, processAlpha, manipulation, format);
+} else {
+OS.graphicsContext_drawRGB(handle, rgbData, offset, scanlength, x, y, width, height, processAlpha, manipulation, format);
+}
+}
+/**
+* Draws outline round-cornered rectangle specified by the arguments using foreground color.
+*
+* @param x The x coordinate of top left corner of rectangle
+* @param y The y coordinate of top left corner of rectangle
+* @param width The width of rectangle
+* @param height The height of rectangle
+* @param arcWidth The width of the rectangle corner arc
+* @param arcHeight The heiht of the rectangle corner arc
+* @throws IllegalStateException if no target is bound
+*/
+public void drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawRoundRect(x, y, width, height, arcWidth, arcHeight);
+} else {
+OS.graphicsContext_drawRoundRect(handle, x, y, width, height, arcWidth, arcHeight);
+}
+}
+/**
+* Draws the given string to specified location using the current font and foreground color.
+* Note: no tab expansion or carriage return processing will be performed.
+*
+* @param string The string to draw
+* @param x The x coordinate of top left corner of rectangular are where the string is drawn
+* @param y The y coordinate of top left corner of rectangular are where the string is drawn
+* @param sTransparent If true the background will be transparent, otherwise it will be opaque
+* @throws IllegalStateException if no target is bound
+*/
+// TODO version for drawing bounding box (eSWT)
+public void drawString(String string, int x, int y, boolean isTransparent) {
+checkState();
+drawString(
+string,
+x,
+y,
+0,
+0,
+(GraphicsContext.ALIGNMENT_LEFT | GraphicsContext.ALIGNMENT_TOP),
+GraphicsContext.TEXT_SINGLE_LINE,
+isTransparent);
+}
+/**
+* Draws the given string to specified location using the current font and foreground color.
+* <code>alignments</code> and <code>flags</code> can be combined by
+* using the bit-wise or operation.
+*
+* @param string The string to draw
+* @param x The x coordinate of top left corner of rectangular are where the string is drawn
+* @param y The y coordinate of top left corner of rectangular are where the string is drawn
+* @param width The width of rectangular are where the string is drawn.
+* If 0 then the width is calculated based on the given <code>string</code>, <code>alignments</code> and <code>flags</code>.
+* @param height The height of rectangular are where the string is drawn.
+* If 0 then the height is calculated based on the given <code>text</code>, <code>alignments</code> and <code>flags</code>.
+* @param alingments Alingments:
+* <ul>
+* <li>ALIGNMENT_LEFT - Aligns with the left edge</li>
+* <li>ALIGNMENT_RIGHT - Aligns with the right edge</li>
+* <li>ALIGNMENT_HCENTER - Centers horizontally in the available space</li>
+* <li>ALIGNMENT_TOP - Aligns with the top</li>
+* <li>ALIGNMENT_BOTTOM - Aligns with the bottom</li>
+* <li>ALIGNMENT_VCENTER - Centers vertically in the available space</li>
+* </ul>
+* @param flags Flags:
+* <ul>
+* <li>TEXT_SINGLE_LINE - One line. Whitespaces are threated as spaces</li>
+* <li>TEXT_DONT_CLIP - Prints outside of the given bounds if needed</li>
+* <li>TEXT_EXPAND_TABS - Expand tabs</li>
+* <li>TEXT_SHOW_MNEMONIC - Underline the mnemonic character</li>
+* <li>TEXT_WORD_WRAP - Breaks lines at appropriate points</li>
+* <li>TEXT_WRAP_ANYWHERE - Breaks lines anywhere, even within words</li>
+* <li>TEXT_DONT_PRINT - Behaves like a "hidden" text, not printed</li>
+* <li>TEXT_INCLUDE_TAILING_SPACES - Trailing whitespace not deleted automatically</li>
+* <li>TEXT_JUSTIFICATIONFORCED - Ensures that text lines are justified</li>
+* </ul>
+*/
+public void drawString(
+String string, int x, int y, int width, int height, int alignments, int flags, boolean isTransparent) {
+checkState();
+if (string == null) {
+throw new NullPointerException("string is null");
+}
+if( (flags & TEXT_DONT_PRINT)== TEXT_DONT_PRINT)
+{ // nothing should be drawn
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.drawString(string, x, y, width, height, alignments, flags, isTransparent);
+} else {
+OS.graphicsContext_drawString(handle, string, x, y, width, height, alignments, flags, isTransparent);
+}
+}
+/**
+* Fill interior of circular or elliptical arc within specified rectangular area, using background color.
+*
+* @param x The x coordinate of top left corner of arc rectangle
+* @param y The y coordinate of top left corner of arc rectangle
+* @param width The width of arc rectangle
+* @param height The height of arc rectangle
+* @param startAngle The starting angle for arc
+* @param arcAngle The span angle for arc
+* @throws IllegalStateException if no target is bound
+*/
+public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.fillArc(x, y, width, height, startAngle, arcAngle);
+} else {
+OS.graphicsContext_fillArc(handle, x, y, width, height, startAngle, arcAngle);
+}
+}
+/**
+* Fills interior of an ellipse/oval within specified rectangular area, using background color.
+*
+* @param x The x coordinate of top left corner of ellipse rectangle
+* @param y The y coordinate of top left corner of ellipse rectangle
+* @param width The width of ellipse rectangle
+* @param height The height of ellipse rectangle
+* @throws IllegalStateException if no target is bound
+*/
+public void fillEllipse(int x, int y, int width, int height) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.fillEllipse(x, y, width, height);
+} else {
+OS.graphicsContext_fillEllipse(handle, x, y, width, height);
+}
+}
+/**
+* Fills interior of specified rectangle with a gradient sweeping from left to right or top to bottom
+* from foregroundcolor to backgroundcolor or from backgroundcolor to foregroundcolor depending on <code>swapColors</code>.
+*
+* @param x The x coordinate of top left corner of rectangle
+* @param y The y coordinate of top left corner of rectangle
+* @param width The width of rectangle
+* @param height The height of rectangle
+* @param vertical if true sweeps from top to bottom, else sweeps from left to right
+* @param swapColors if true sweep is performed from background color to foreground color, else from foreground color to background color
+* @throws IllegalStateException if no target is bound
+*/
+public void fillGradientRect(int x, int y, int width, int height, boolean vertical, boolean swapColors) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.fillGradientRect(x, y, width, height, vertical, swapColors);
+} else {
+OS.graphicsContext_fillGradientRect(handle, x, y, width, height, vertical, swapColors);
+}
+}
+/**
+* Fills interior of closed polygon which is specified by array of integer coordinates,
+* using background color. Lines are drawn between each consecutive x,y pairs and between first and last point.
+*
+* @param pointArray An array alternating x and y values which are the verices of the polygon
+* @throws NullPointerException if <code>pointArray</code> is null
+* @throws IllegalStateException if no target is bound
+*/
+public void fillPolygon(int[] pointArray)  {
+checkState();
+if (pointArray == null) {
+throw new NullPointerException("pointaArray is null");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.fillPolygon(pointArray);
+} else {
+OS.graphicsContext_fillPolygon(handle, pointArray);
+}
+}
+/**
+* Fills interior of the specified rectangle, using background color.
+*
+* @param x The x coordinate of top left corner of rectangle
+* @param y The y coordinate of top left corner of rectangle
+* @param width The width of rectangle
+* @param height The height of rectangle
+* @throws IllegalStateException if no target is bound
+*/
+public void fillRect(int x, int y, int width, int height) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.fillRect(x, y, width, height);
+} else {
+OS.graphicsContext_fillRect(handle, x, y, width, height);
+}
+}
+/**
+* Fills interior of round-cornered rectangle, using background color.
+*
+* @param x The x coordinate of top left corner of rectangle
+* @param y The y coordinate of top left corner of rectangle
+* @param width The width of rectangle
+* @param height The height of rectangle
+* @param arcWidth The width of the rectangle corner arc
+* @param arcHeight The heiht of the rectangle corner arc
+* @throws IllegalStateException if no target is bound
+*/
+public void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight) {
+checkState();
+if(width <= 0 || height <= 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.fillRoundRectangle(x, y, width, height, arcWidth, arcHeight);
+} else {
+OS.graphicsContext_fillRoundRect(handle, x, y, width, height, arcWidth, arcHeight);
+}
+}
+/**
+* Get the advance width of the specified character in the font which is
+* currently selected into the receiver.
+* @param ch The character to be measured
+* @return The distance in the x direction to move past the character before painting the next
+*/
+public int getAdvancedCharacterWidth(char ch) {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getAdvancedCharacterWidth(ch, true);
+} else {
+return OS.graphicsContext_getCharacterWidth(handle, ch, true);
+}
+}
+/**
+* Get the advance width of the specified character in the font which is
+* currently selected into the receiver.
+* The width is defined as the space taken up by the actual character,
+* not including the leading and tailing whitespace or overhang.
+*
+* @param ch The character to be measured
+* @return The width of the character
+*/
+public int getCharacterWidth(char ch) {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getAdvancedCharacterWidth(ch, true);
+} else {
+return OS.graphicsContext_getCharacterWidth(handle, ch, false);
+}
+}
+/**
+* Gets the <code>FontMetrics</code> data.
+*
+* Values are stored in the data array as follows:
+* <ul>
+* <li>data[0] = ASCENT
+* <li>data[1] = AVERAGE CHAR WIDTH
+* <li>data[2] = DESCENT
+* <li>data[3] = HEIGHT
+* <li>data[4] = LEADING
+* </ul>
+* @param data The integer array where to copy <code>FontMetrics</code> data.
+* @param fontHandle If not zero then Fontmetrics data will be based on it
+* otherwise data is based on the font which is currently selected into the receiver.
+* @throws NullPointerException if data is null
+* @throws IllegalStateException if no target is bound
+*/
+public void getFontMetricsData(int[] data, int fontHandle) {
+getFontMetricsData(data, fontHandle, true);
+}
+public void getFontMetricsData(int[] data, int fontHandle, boolean check) {
+if (check) checkState();
+if (data == null) {
+throw new NullPointerException("data is null");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.getFontMetricsData(data, fontHandle);
+} else {
+OS.graphicsContext_getFontMetricsData(handle, data, fontHandle);
+}
+}
+/**
+* Gets the alpha component of the background color.
+*
+* @return The alpha value (0-255)
+* @throws IllegalStateException if no target is bound
+*/
+public int getBackgroundAlpha() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getBackgroundAlpha();
+} else {
+return OS.graphicsContext_getBackgroundAlpha(handle);
+}
+}
+/**
+* Gets current background color in argb format.
+*
+* @return Interger containing current color in #AARRGGBB format
+* @throws IllegalStateException if no target is bound
+*/
+public int getBackgroundColor() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getBackgroundColor();
+} else {
+return OS.graphicsContext_getBackgroundColor(handle);
+}
+}
+/**
+* Gets current blending mode.
+* Default blending mode is SRC_OVER.
+*
+* @return blending mode
+* @throws IllegalStateException if no target is bound
+*/
+public int getBlendingMode() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getBlendingMode();
+} else {
+return OS.graphicsContext_getBlendingMode(handle);
+}
+}
+/**
+* Gets the current clip rectangle. Retrieved clip is copied in given integer array which
+* must have at least size of 4, in order to populate all clip values.
+*
+* Values are stored in clip array as follows:
+* <ul>
+* <li>clip[RECT_X] - the x coordinate of clip</li>
+* <li>clip[RECT_Y] - the y coordinate of clip
+* <li>clip[RECT_WIDTH] - the width of clip
+* <li>clip[RECT_HEIGHT] - the height of clip
+* </ul>
+* @param clip The integer array where to copy clip data
+* @throws NullPointerException if clip is null
+* @throws IllegalArgumentException if clip.length < 4
+* @throws IllegalStateException if no target is bound
+*/
+public void getClip(int[] clip) {
+checkState();
+if (clip == null) {
+throw new NullPointerException("clip is null");
+}
+if (clip.length < 4 ) {
+throw new IllegalArgumentException("clip array size is < 4");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.getClip(clip);
+} else {
+OS.graphicsContext_getClip(handle, clip);
+}
+}
+/**
+* Gets the alpha component of the foreground color.
+*
+* @return The alpha value (0-255)
+* @throws IllegalStateException if no target is bound
+*/
+public int getForegroundAlpha() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getForegroundAlpha();
+} else {
+return OS.graphicsContext_getForegroundAlpha(handle);
+}
+}
+/**
+* Gets current foreground color in argb format.
+*
+* @return Integer containing current color in #AARRGGBB format
+* @throws IllegalStateException if no target is bound
+*/
+public int getForegroundColor() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getForegroundColor();
+} else {
+return OS.graphicsContext_getForegroundColor(handle);
+}
+}
+/**
+* @see #getTextBoundingBox()
+*/
+public void getTextBoundingBox(
+int[] boundingBox, String string, int alignments, int flags) {
+getTextBoundingBox(boundingBox, string, alignments, flags, 0, 0, 0, 0);
+}
+/**
+* Returns a bounding box required by the given <code>string</code> when it is
+* drawn inside the given rectangle (<code>rectX</code>, <code>rectY</code>,
+* <code>rectWidth</code>, <code>rectHeight</code>) with the given <code>flags</code>
+* and <code>alignments</code> using the currently set font.
+* If the text does not fit within the given rectangle then the required bounding box
+* is returned.
+*
+* @param boundingBox The integer array where to copy bounding box data.
+* Result is stored in the array as follows:
+* <ul>
+* <li>boundingBox[RECT_X] - top-left x of the text bounding box</li>
+* <li>boundingBox[RECT_Y] - top-left y of the text bounding box</li>
+* <li>boundingBox[RECT_WIDTH] - the width of the text bounding box</li>
+* <li>boundingBox[RECT_HEIGHT] - the height of the text bounding box</li>
+* </ul>
+* @param string The string
+* @param alignments Alignments @see #drawString()
+* @param flags Flags  @see #drawString()
+* @param rectX Drawing rectangle's top-left x coordinate.
+* @param rectY Drawing rectangle's top-left y coordinate.
+* @param rectWidth Drawing rectangle width.
+* @param rectHeight Drawing rectangle height.
+* @throws NullPointerException if <code>boundingBox</code> is null
+* @throws NullPointerException if <code>string</code> is null
+* @throws IllegalArgumentException if <code>boundingBox</code>.length < 4
+* @throws IllegalStateException if no target is bound
+*/
+public void getTextBoundingBox(
+int[] boundingBox, String string, int alignments, int flags,
+int rectX, int rectY, int rectWidth, int rectHeight) {
+checkState();
+if (boundingBox == null) {
+throw new NullPointerException("boundingBox is null");
+}
+if (string == null) {
+throw new NullPointerException("string is null");
+}
+if (boundingBox.length < 4 ) {
+throw new IllegalArgumentException("boundingBox size must not be < 4");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.getTextBoundingBox(boundingBox, string, alignments, flags, rectX, rectY, rectWidth, rectHeight);
+} else {
+OS.graphicsContext_getTextBoundingBox(
+handle, boundingBox, string, alignments, flags, rectX, rectY, rectWidth, rectHeight);
+}
+}
+/**
+* Gets the stroke width in pixels.
+*
+* @return stroke width in pixels
+* @throws IllegalStateException if no target is bound
+*/
+public int getStrokeWidth() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getStrokeWidth();
+} else {
+return OS.graphicsContext_getStrokeWidth(handle);
+}
+}
+/**
+* Gets current stroke style, which will be one of the constants:
+* <ul>
+* <li>STROKE_NO: Stroke is not used</li>
+* <li>STROKE_SOLID: Plain line style</li>
+* <li>STROKE_DASH: Line contains dashes separated by a few pixels</li>
+* <li>STROKE_DOT: Line contains dots separated by a few pixels</li>
+* <li>STROKE_DASH_DOT: Dot-dash line type</li>
+* <li>STROKE_DASH_DOT_DOT: Dash-dot-dot line type</li>
+* </ul>
+*
+* @return The style used for strokes
+* @throws IllegalStateException if no target is bound
+*/
+public int getStrokeStyle() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getStrokeStyle();
+} else {
+return OS.graphicsContext_getStrokeStyle(handle);
+}
+}
+/**
+* Gets the x coorinate of translated origin
+* @return the x coorinate of origin
+*/
+public int getTranslateX() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getTranslateX();
+} else {
+return OS.graphicsContext_getTranslateX(handle);
+}
+}
+/**
+* Gets the y coorinate of translated origin
+* @return the y coorinate of origin
+*/
+public int getTranslateY() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.getTranslateY();
+} else {
+return OS.graphicsContext_getTranslateY(handle);
+}
+}
+/**
+* Sets alpha component value for background color
+*
+* @param alpha The alpha value to be set in range 0-255
+* @throws IllegalArgumentException if alpha is not in range of 0-255
+* @throws IllegalStateException if no target is bound
+*/
+public void setBackgroundAlpha(int alpha) {
+checkState();
+if (alpha < 0 || alpha > 255 ) {
+throw new IllegalArgumentException("alpha is not in range 0-255");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setBackgroundAlpha(alpha);
+} else {
+OS.graphicsContext_setBackgroundAlpha(handle, alpha);
+}
+}
+/**
+* Sets the background color.
+* The background color is used for fill operations and as the background color when text is drawn
+*
+* @param argb The color and alpha to be set in 32-bit format #AARRGGBB
+* @throws IllegalStateException if no target is bound
+*/
+public void setBackgroundColor(int argb, boolean updateAlpha) {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setBackgroundColor(argb, updateAlpha);
+} else {
+OS.graphicsContext_setBackgroundColor(handle, argb, updateAlpha);
+}
+}
+/**
+* Sets the background color.
+* The background color is used for fill operations and as the background color when text is drawn
+*
+* @param red The red component of the color being set in range 0-255
+* @param green The green component of the color being set in range 0-255
+* @param blue The blue component of the color being set in range 0-255
+* @throws IllegalArgumentException if red, green or blue is not in range of 0-255
+* @throws IllegalStateException if no target is bound
+*/
+public void setBackgroundColor(int red, int green, int blue) {
+checkState();
+if (red   < 0 || red   > 255 ||
+green < 0 || green > 255 ||
+blue  < 0 || blue  > 255 ) {
+throw new IllegalArgumentException();
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setBackgroundColor((0xff000000 | (red << 16) | (green << 8) | blue), false);
+} else {
+OS.graphicsContext_setBackgroundColor(handle, (0xff000000 | (red << 16) | (green << 8) | blue), false);
+}
+}
+/**
+* Sets the background color.
+* The background color is used for fill operations and as the background color when text is drawn
+*
+* @param alpha The alpha component of the color being set in range 0-255
+* @param red The red component of the color being set in range 0-255
+* @param green The green component of the color being set in range 0-255
+* @param blue The blue component of the color being set in range 0-255
+* @throws IllegalArgumentException if alpha, red, green or blue is not in range of 0-255
+* @throws IllegalStateException if no target is bound
+*/
+public void setBackgroundColor(int alpha, int red, int green, int blue) {
+checkState();
+if (alpha < 0 || alpha > 255 ||
+red   < 0 || red   > 255 ||
+green < 0 || green > 255 ||
+blue  < 0 || blue  > 255 ) {
+throw new IllegalArgumentException();
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setBackgroundColor(((alpha << 24) | (red << 16) | (green << 8) | blue), true);
+} else {
+OS.graphicsContext_setBackgroundColor(handle,((alpha << 24) | (red << 16) | (green << 8) | blue), true);
+}
+}
+/**
+* Sets blending mode. The blending mode dictates how rendered pixels are combined with the destination pixels.
+* The default blending mode is BLENDING_MODE_SRC_OVER, i.e. if not other mode is set using this method.
+*
+* If the bound target does not have and alpha channel the set mode has no effect.
+*
+* @param mode The blending mode to be set, one of BLENDING_MODE_SRC, BLENDING_MODE_SRC_OVER or BLENDING_MODE_XOR
+* @throws IllegalArgumentException if mode is not one of listed above
+* @throws IllegalStateException if no target is bound
+*/
+public void setBlendingMode(int mode) {
+checkState();
+if ( mode != BLENDING_MODE_SRC &&
+mode != BLENDING_MODE_SRC_OVER &&
+mode != BLENDING_MODE_XOR) {
+throw new IllegalArgumentException("Illegal blending mode");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setBlendingMode(mode);
+} else {
+OS.graphicsContext_setBlendingMode(handle, mode);
+}
+}
+/**
+* Returns if clipped or not.
+* @return True if clipping region is set, and false otherwise
+*/
+public boolean hasClipping() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+return targetData.commandBuffer.hasClipping();
+} else {
+return OS.graphicsContext_hasClipping(handle);
+}
+}
+/**
+* Reset clipping region.
+*/
+public void cancelClipping() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.cancelClipping();
+} else {
+OS.graphicsContext_cancelClipping(handle);
+}
+}
+/**
+* Sets the clip rectangle where draw operations will take affect.
+* Rendering operations have no effect outside of the clipping area.
+*
+* If intersects is set as true then the clip area is set to area where the current and given
+* clip rectangle intersect, i.e. where they overlap.
+*
+* If width or height is negative request is silently ignored.
+*
+* @param x The x coordinate for the clip area
+* @param y The y coordinate for the clip area
+* @param width The width of the clip area
+* @param height The height of the clip area
+* @param intersects if true clip is set as interscetion of current and given clip rectangle,
+* otherwise the clip is set as specified
+* @throws IllegalStateException if no target is bound
+*/
+public void setClip(int x, int y, int width, int height, boolean intersects) {
+checkState();
+if(width < 0 || height < 0) {
+return;
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setClip(x, y, width, height, intersects);
+} else {
+OS.graphicsContext_setClip(handle, x, y, width, height, intersects);
+}
+}
+/**
+* Sets font which is used in drawString.
+*
+* @param fontHandle The handle of native QFont
+*/
+public void setFont(int fontHandle) {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setFont(fontHandle);
+} else {
+OS.graphicsContext_setFont(handle, fontHandle);
+}
+}
+/**
+* Sets alpha component value for foreground color
+*
+* @param alpha The alpha value to be set in range 0-255
+* @throws IllegalArgumentException if alpha is not in range of 0-255
+* @throws IllegalStateException if no target is bound
+*/
+public void setForegroundAlpha(int alpha) {
+checkState();
+if (alpha < 0 || alpha > 255 ) {
+throw new IllegalArgumentException("alpha is not in range 0-255");
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setForegroundAlpha(alpha);
+} else {
+OS.graphicsContext_setForegroundAlpha(handle, alpha);
+}
+}
+/**
+* Sets the foreground color.
+* TThe foreground color is used for non fill primitives.
+*
+* @param argb The color and alpha to be set in 32-bit format #AARRGGBB
+* @throws IllegalStateException if no target is bound
+*/
+public void setForegroundColor(int argb, boolean updateAlpha) {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setForegroundColor(argb, updateAlpha);
+} else {
+OS.graphicsContext_setForegroundColor(handle, argb, updateAlpha);
+}
+}
+/**
+* Sets the foreground color.
+* The foreground color is used for non fill primitives.
+*
+* @param red The red component of the color being set in range 0-255
+* @param green The green component of the color being set in range 0-255
+* @param blue The blue component of the color being set in range 0-255
+* @throws IllegalArgumentException if red, green or blue is not in range of 0-255
+* @throws IllegalStateException if no target is bound
+*/
+public void setForegroundColor(int red, int green, int blue) {
+checkState();
+if (red   < 0 || red   > 255 ||
+green < 0 || green > 255 ||
+blue  < 0 || blue  > 255 ) {
+throw new IllegalArgumentException();
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setForegroundColor((0xff000000 | (red << 16) | (green << 8) | blue), false);
+} else {
+OS.graphicsContext_setForegroundColor(handle, (0xff000000 | (red << 16) | (green << 8) | blue), false);
+}
+}
+/**
+* Sets the foreground color.
+* The foreground color is used for non fill primitives.
+*
+* @param alpha The alpha component of the color being set in range 0-255
+* @param red The red component of the color being set in range 0-255
+* @param green The green component of the color being set in range 0-255
+* @param blue The blue component of the color being set in range 0-255
+* @throws IllegalArgumentException if alpha, red, green or blue is not in range of 0-255
+* @throws IllegalStateException if no target is bound
+*/
+public void setForegroundColor(int alpha, int red, int green, int blue) {
+checkState();
+if (alpha < 0 || alpha > 255 ||
+red   < 0 || red   > 255 ||
+green < 0 || green > 255 ||
+blue  < 0 || blue  > 255 ) {
+throw new IllegalArgumentException();
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setForegroundColor(((alpha << 24) | (red << 16) | (green << 8) | blue), true);
+} else {
+OS.graphicsContext_setForegroundColor(handle,((alpha << 24) | (red << 16) | (green << 8) | blue), true);
+}
+}
+/**
+* Sets the stroke style, which is one of STROKE_SOLID, STROKE_DOT, STROKE_DASH,
+* STROKE_DASHDOT or STROKE_DASHDOTDOT.
+*
+* @param style The style to be set
+* @throws IllegalArgumentException if style is not one of listed above
+* @throws IllegalStateException if no target is bound
+*/
+public void setStrokeStyle(int style) {
+checkState();
+if (style != STROKE_SOLID &&
+style != STROKE_DOT &&
+style != STROKE_DASH &&
+style != STROKE_DASH_DOT &&
+style != STROKE_DASH_DOT_DOT ) {
+throw new IllegalArgumentException("Invalid style: " + style);
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setStrokeStyle(style);
+} else {
+OS.graphicsContext_setStrokeStyle(handle, style);
+}
+}
+/**
+* Sets the stroke width in pixels.
+*
+* @param width The stroke width in pixels
+* @throws IllegalArgumentException if width is negative or zero
+* @throws IllegalStateException if no target is bound
+*/
+public void setStrokeWidth(int width) {
+checkState();
+if(width < 0) {
+throw new IllegalArgumentException("Invalid width: " + width);
+}
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.setStrokeWidth(width);
+} else {
+OS.graphicsContext_setStrokeWidth(handle, width);
+}
+}
+/**
+* Translates the origin of this graphics context to point (x,y). All coordinates used in subsequent
+* rendering operations are relative to this new origin.
+*
+* @param x the x coordinate of new origin
+* @param y the y coordinate of new origin
+* @throws IllegalStateException if no target is bound
+*/
+public void translate(int x, int y) {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.translate(x, y);
+} else {
+OS.graphicsContext_translate(handle, x, y);
+}
+}
+/**
+* Scales the coordinate system by (x, y). All coordinates used in subsequent
+* rendering operations are scaled with these values.
+*
+* @param x the x scaling factor
+* @param y the y scaling factor
+* @throws IllegalStateException if no target is bound
+*/
+public void scale(int x, int y) {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.scale(x, y);
+} else {
+OS.graphicsContext_scale(handle, x, y);
+}
+}
+/**
+* Resets any transformations that were made using translate(), scale().
+*
+* @throws IllegalStateException if no target is bound
+*/
+public void resetTransform() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.resetTransform();
+} else {
+OS.graphicsContext_resetTransform(handle);
+}
+}
+/**
+* Disposes this graphics context and frees all native resources. If there is a target bound, it is released
+* automatically before cleaning resources. If this instance has already been disposed request is silently ignored.
+*/
+public void dispose() {
+Utils.validateUiThread();
+// If already disposed just return
+if (disposed) {
+return;
+} else {
+// in case there's a bound target release it before disposing
+if (targetData.target != null) {
+releaseTarget();
+}
+// dispose native peer
+OS.graphicsContext_dispose(handle);
+handle = 0;
+disposed = true;
+}
+}
+/**
+* Gets the status of this graphics context.
+*
+* @return True if this instance has been already disposed otherwise false
+*/
+public boolean isDisposed() {
+return disposed;
+}
+/**
+* Gets the status of this graphics context.
+*
+* @return True if this instance is currently being used
+*/
+public boolean isActive() {
+return (targetData.target != null);
+}
+/**
+* Returns native side handle.
+* @return the native handle.
+*/
+public int getHandle() {
+return handle;
+}
+/**
+* Saves graphics context settings.
+*/
+public void saveSettings() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.saveSettings();
+} else {
+OS.graphicsContext_saveSettings(handle);
+}
+}
+/**
+* Restores graphics context settings.
+*/
+public void restoreSettings() {
+checkState();
+if(targetData.isJavaCommandBuffer) {
+targetData.commandBuffer.restoreSettings();
+} else {
+OS.graphicsContext_restoreSettings(handle);
+}
+}
+/**
+* private ,method for checking the state of this instance.
+*/
+private void checkState() {
+Utils.validateUiThread();
+if (disposed) {
+throw new IllegalStateException("GraphicsContext already disposed");
+}
+if ( targetData.target == null ) {
+throw new IllegalStateException("No target set");
+}
+}
+/**
+* Validates manipulation argument.
+* @param manipulation Value to be checked
+* @return true if given argument is valid, otherwise false
+*/
+private boolean isManipulationValid(int manipulation) {
+if ((manipulation != Image.TRANS_NONE) &&
+(manipulation != Image.TRANS_ROT90) &&
+(manipulation != Image.TRANS_ROT180)&&
+(manipulation != Image.TRANS_ROT270) &&
+(manipulation != Image.TRANS_MIRROR) &&
+(manipulation != Image.TRANS_FLIP_HORIZONTAL) &&
+(manipulation != Image.TRANS_FLIP_VERTICAL) &&
+(manipulation != Image.TRANS_MIRROR_ROT180) &&
+(manipulation != Image.TRANS_MIRROR_ROT270) &&
+(manipulation != Image.TRANS_MIRROR_ROT90)) {
+return false;
+}
+return true;
+}
+/**
+* Processes command buffer
+* @param buffer The buffer to be processed
+*/
+private void processBuffer(JavaCommandBuffer buffer) {
+int i = 0;
+int intCount = buffer.intParamCount();
+int imageCount = 0;
+int stringCount = 0;
+int rgbCount = 0;
+int[] intParams = buffer.intParams();
+Vector images = buffer.images();
+String strings = buffer.strParams();
+Vector rgbs = buffer.rgbParams();
+while( i < intCount ) {
+switch ((intParams[i] >> 24)) {
+//
+// Draw op code handling
+//
+case JavaCommandBuffer.DRAW_PREFIX:
+{
+switch (intParams[i++]) {
+case JavaCommandBuffer.OP_DRAWARC:
+{
+OS.graphicsContext_drawArc(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_DRAWLINE:
+{
+OS.graphicsContext_drawLine(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_DRAWIMAGE1:
+{
+Image img = (Image)images.elementAt(imageCount++);
+OS.graphicsContext_drawImage(handle,
+img.handle,
+intParams[i++],
+intParams[i++]);
+// As we made a shallow copy of the image in buffer
+// its safe to delete that here
+img.dispose();
+break;
+}
+case JavaCommandBuffer.OP_DRAWIMAGE2:
+{
+Image img = (Image)images.elementAt(imageCount++);
+OS.graphicsContext_drawImage(handle,
+img.handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+// As we made a shallow copy of the image in buffer
+// its safe to delete that here
+img.dispose();
+break;
+}
+case JavaCommandBuffer.OP_DRAWFOCUS:
+{
+OS.graphicsContext_drawFocus(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_DRAWELLIPSE:
+{
+OS.graphicsContext_drawEllipse(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_DRAWPOINT:
+{
+OS.graphicsContext_drawPoint(handle, intParams[i++], intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_DRAWPOLYGON:
+{
+int arraySize = intParams[i++];
+int[] pointArray = new int[arraySize];
+System.arraycopy(intParams, i, pointArray, 0, arraySize);
+i += arraySize;
+OS.graphicsContext_drawPolygon(handle, pointArray);
+break;
+}
+case JavaCommandBuffer.OP_DRAWPOLYLINE:
+{
+int arraySize = intParams[i++];
+int [] pointArray = new int[arraySize];
+System.arraycopy(intParams, i, pointArray, 0, arraySize);
+i += arraySize;
+OS.graphicsContext_drawPolyline(handle, pointArray);
+break;
+}
+case JavaCommandBuffer.OP_DRAWRECT:
+{
+OS.graphicsContext_drawRect(handle, intParams[i++], intParams[i++], intParams[i++], intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_DRAWRGB_INT:
+{
+int index = rgbCount++;
+int[] rgbData = (int[])rgbs.elementAt(index);
+OS.graphicsContext_drawRGB(handle,
+rgbData,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+(intParams[i++] != 0),
+intParams[i++]);
+rgbs.setElementAt(null, index);
+break;
+}
+case JavaCommandBuffer.OP_DRAWRGB_BYTE:
+{
+int index1 = rgbCount++;
+byte[] rgbData = (byte[])rgbs.elementAt(index1);
+int index2 = rgbCount++;
+byte[] transparencyMask = (byte[])rgbs.elementAt(index2);
+OS.graphicsContext_drawRGB(handle,
+rgbData,
+transparencyMask,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+rgbs.setElementAt(null, index1);
+rgbs.setElementAt(null, index2);
+break;
+}
+case JavaCommandBuffer.OP_DRAWRGB_SHORT:
+{
+int index = rgbCount++;
+short[] rgbData = (short[])rgbs.elementAt(index);
+OS.graphicsContext_drawRGB(handle,
+rgbData,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+(intParams[i++] != 0),
+intParams[i++],
+intParams[i++]);
+rgbs.setElementAt(null, index);
+break;
+}
+case JavaCommandBuffer.OP_DRAWROUNDRECT:
+{
+OS.graphicsContext_fillRoundRect(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_DRAWSTRING:
+{
+int stringLength = intParams[i++];
+String string = strings.substring(stringCount, stringCount + stringLength);
+stringCount += stringLength;
+OS.graphicsContext_drawString(handle,
+string,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+(intParams[i++] != 0));
+break;
+}
+default:
+throw new RuntimeException("Internal error: Unknown opcode");
+}
+break;
+}
+//
+// Fill op codes handling
+//
+case JavaCommandBuffer.FILL_PREFIX:
+{
+switch (intParams[i++]) {
+case JavaCommandBuffer.OP_FILLRECT:
+{
+OS.graphicsContext_fillRect(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_FILLARC:
+{
+OS.graphicsContext_fillArc(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_FILLGRADIENTRECT:
+{
+OS.graphicsContext_fillGradientRect(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+(intParams[i++] != 0),
+(intParams[i++] != 0));
+break;
+}
+case JavaCommandBuffer.OP_FILLELLIPSE:
+{
+OS.graphicsContext_fillEllipse(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_FILLPOLYGON:
+{
+int arraySize = intParams[i++];
+int[] pointArray = new int[arraySize];
+System.arraycopy(intParams, i, pointArray, 0, arraySize);
+i += arraySize;
+OS.graphicsContext_fillPolygon(handle, pointArray);
+break;
+}
+case JavaCommandBuffer.OP_FILLROUNDRECT:
+{
+OS.graphicsContext_fillRoundRect(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++]);
+break;
+}
+default:
+throw new RuntimeException("Internal error: Unknown opcode");
+}
+break;
+}
+//
+// Setter op code handling
+//
+case JavaCommandBuffer.SET_PREFIX:
+{
+switch (intParams[i++]) {
+case JavaCommandBuffer.OP_SETBACKGROUNDALPHA:
+{
+OS.graphicsContext_setBackgroundAlpha(handle, intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_SETBACKGROUNDCOLOR:
+{
+OS.graphicsContext_setBackgroundColor(handle, intParams[i++], (intParams[i++] != 0));
+break;
+}
+case JavaCommandBuffer.OP_SETBLENDINGMODE:
+{
+OS.graphicsContext_setBlendingMode(handle, intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_SETCLIP:
+{
+OS.graphicsContext_setClip(handle,
+intParams[i++],
+intParams[i++],
+intParams[i++],
+intParams[i++],
+(intParams[i++] != 0));
+break;
+}
+case JavaCommandBuffer.OP_SETFONT:
+{
+OS.graphicsContext_setFont(handle, intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_SETFOREGROUNDALPHA:
+{
+OS.graphicsContext_setForegroundAlpha(handle, intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_SETFOREGROUNDCOLOR:
+{
+OS.graphicsContext_setForegroundColor(handle, intParams[i++], (intParams[i++] != 0));
+break;
+}
+case JavaCommandBuffer.OP_SETSTROKESTYLE:
+{
+OS.graphicsContext_setStrokeStyle(handle, intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_SETSTROKEWIDTH:
+{
+OS.graphicsContext_setStrokeWidth(handle, intParams[i++]);
+break;
+}
+default:
+throw new RuntimeException("Internal error: Unknown opcode");
+}
+break;
+}
+//
+// misc op code handling
+//
+case JavaCommandBuffer.MISC_PREFIX:
+{
+switch (intParams[i++]) {
+case JavaCommandBuffer.OP_CANCELCLIPPING:
+{
+OS.graphicsContext_cancelClipping(handle);
+break;
+}
+case JavaCommandBuffer.OP_TRANSLATE:
+{
+OS.graphicsContext_translate(handle, intParams[i++], intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_SCALE:
+{
+OS.graphicsContext_scale(handle, intParams[i++], intParams[i++]);
+break;
+}
+case JavaCommandBuffer.OP_RESETTRANSFORM:
+{
+OS.graphicsContext_resetTransform(handle);
+break;
+}
+case JavaCommandBuffer.OP_COPYAREA1:
+{
+break;
+}
+case JavaCommandBuffer.OP_COPYAREA2:
+{
+break;
+}
+default:
+throw new RuntimeException("Internal error: Unknown opcode");
+}
+break;
+}
+default:
+throw new RuntimeException("Internal error: Unkonwn opcode category");
+}
+}
+}
+private final int handle(Widget w) {
+return Internal_PackageSupport.handle(w);
+}
+}

changeset 21	2a9601315dfc
child 35	85266cc22c7f