javauis/eswt_qt/org.eclipse.swt/Eclipse_SWT_PI/qt/org/eclipse/swt/internal/qt/graphics/GraphicsContext.java
/*******************************************************************************
* 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()) {
// Notify the image that it will get modified. This affects any existing shallow copies of it.
if(targetData.type == GraphicsContext.TARGET_IMAGE) {
((Image)targetData.target).pixelDataModified();
}
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);
}
}
/**
* Draws given WindowSurface. Supported only when WindowSurface
* uses local off-screen image as draw surface.
* The defined rectangular area is drawn to the same x and y position in the
* target as the given arguments x and y specify.
*
* @param surface The WindowSurface to draw
* @param x The x-coordinate of the source area to draw
* @param y The y-coordinate of the source area to draw
* @param width The width of the source area to draw
* @param height The height of the source area to draw
* @throws NullPointerException if surface is null
*/
public void drawWindowSurface(WindowSurface surface, int x, int y, int width, int height) {
if(surface == null)
{
throw new NullPointerException("surface is null");
}
OS.graphicsContext_drawWindowSurface(handle, surface.handle, x, y, width, height);
}
/**
* 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);
images.setElementAt(null, 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.freeCommandBufferCopy();
break;
}
case JavaCommandBuffer.OP_DRAWIMAGE2:
{
Image img = (Image)images.elementAt(imageCount);
images.setElementAt(null, 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.freeCommandBufferCopy();
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_drawRoundRect(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);
}
}