--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/lcdui_qt/src/javax/microedition/lcdui/Canvas.java Mon May 03 12:27:20 2010 +0300
@@ -0,0 +1,1141 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+package javax.microedition.lcdui;
+
+import java.util.Vector;
+import java.util.Timer;
+import java.util.TimerTask;
+import javax.microedition.lcdui.EventDispatcher.LCDUIEvent;
+import org.eclipse.ercp.swt.mobile.MobileShell;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.*;
+import org.eclipse.swt.widgets.*;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.internal.extension.CompositeExtension;
+
+/**
+ * The abstract <code>Canvas</code> class is designed to handle low-level
+ * graphical operations as well as low-level key and pointer events. Canvas is
+ * derived from <code>Displayable</code> so the application can switch between
+ * different <code>Canvases</code> together with other
+ * <code>Displayables</code>.
+ * <p>
+ * <b>Canvas</b> the abstract method <code>paint(Graphics g)</code> designed
+ * to be implemented by the developer.
+ */
+public abstract class Canvas extends Displayable {
+
+ /**
+ * Constant for <code>UP</code> game action.
+ */
+ public static final int UP = 1;
+
+ /**
+ * Constant for <code>DOWN</code> game action.
+ */
+ public static final int DOWN = 6;
+
+ /**
+ * Constant for <code>LEFT</code> game action.
+ */
+ public static final int LEFT = 2;
+
+ /**
+ * Constant for <code>RIGHT</code> game action.
+ */
+ public static final int RIGHT = 5;
+
+ /**
+ * Constant for <code>FIRE</code> game action.
+ */
+ public static final int FIRE = 8;
+
+ /**
+ * Constant for general "<code>A</code>" game action.
+ */
+ public static final int GAME_A = 9;
+
+ /**
+ * Constant for general "<code>B</code>" game action.
+ */
+ public static final int GAME_B = 10;
+
+ /**
+ * Constant for general "<code>C</code>" game action.
+ */
+ public static final int GAME_C = 11;
+
+ /**
+ * Constant for general "<code>D</code>" game action.
+ */
+ public static final int GAME_D = 12;
+
+ /**
+ * Key code for <code>0</code> key.
+ */
+ public static final int KEY_NUM0 = 48;
+
+ /**
+ * Key code for <code>1</code> key.
+ */
+ public static final int KEY_NUM1 = 49;
+
+ /**
+ * Key code for <code>2</code> key.
+ */
+ public static final int KEY_NUM2 = 50;
+
+ /**
+ * Key code for <code>3</code> key.
+ */
+ public static final int KEY_NUM3 = 51;
+
+ /**
+ * Key code for <code>4</code> key.
+ */
+ public static final int KEY_NUM4 = 52;
+
+ /**
+ * Key code for <code>5</code> key.
+ */
+ public static final int KEY_NUM5 = 53;
+
+ /**
+ * Key code for <code>6</code> key.
+ */
+ public static final int KEY_NUM6 = 54;
+
+ /**
+ * Key code for <code>7</code> key.
+ */
+ public static final int KEY_NUM7 = 55;
+
+ /**
+ * Key code for <code>8</code> key.
+ */
+ public static final int KEY_NUM8 = 56;
+
+ /**
+ * Key code for <code>9</code> key.
+ */
+ public static final int KEY_NUM9 = 57;
+
+ /**
+ * Key code for <code>*</code> key.
+ */
+ public static final int KEY_STAR = 42;
+
+ /**
+ * Key code for <code>#</code> key.
+ */
+ public static final int KEY_POUND = 35;
+
+ // Listeners for various events.
+ private org.eclipse.swt.events.PaintListener paintListener =
+ new CanvasShellPaintListener();
+
+ private CanvasShellMouseListener mouseListener =
+ new CanvasShellMouseListener();
+
+ // Canvas Graphics object passed to paint(Graphics g).
+ // Graphics has its own back-buffer for double buffering.
+ private Graphics canvasGraphics;
+
+ //On Screen Keypad
+ //private Composite keypadComposite;
+ private CanvasKeypad onScreenkeypad;
+ private int oskHeight;
+
+ // Vector of flags that a certain key was pressed but was not released.
+ // Used to implement keyRepeated since eSWT does not support
+ // key repeat events.
+ private Vector keysPressed;
+
+ // Canvas modes
+ private static final int MODE_UNINITIALIZED = 0;
+ private static final int MODE_NORMAL = 1;
+ private static final int MODE_BUFFER_FLUSH = 2;
+ private static final int MODE_GAME_BUFFER_FLUSH = 3;
+ private int canvasMode = MODE_UNINITIALIZED;
+
+ private boolean suppressGameKeys;
+ private boolean suppressDragEvent;
+ private boolean cleanupNeeded;
+ private Object cleanupLock;
+ private boolean noBackground;
+ private int gameKeyState;
+
+ private Graphics gameBufferGraphics;
+
+ // lock created by graphics object for serializing
+ // flushing against graphics buffer writing
+ private Object flushLock;
+
+ private Timer timer = new Timer();
+ private CanvasTimerTask timerTask;
+
+ private static final int DEFAULT_TIMEOUT = 500;
+ private static final int DEFAULT_TWIPS = 200;
+
+ private int pointerDownX;
+ private int pointerDownY;
+ private int twips;
+ private int timeout;
+ private boolean disableTapDetection;
+
+ private boolean repaintPending;
+ private int repaintX1;
+ private int repaintY1;
+ private int repaintX2;
+ private int repaintY2;
+ private Object repaintLock;
+
+ private boolean selectionKeyCompatibility;
+ private boolean finalMode;
+ /**
+ * Constructs <code>Canvas</code> object.
+ */
+ public Canvas() {
+ super(null);
+ repaintLock = new Object();
+ cleanupLock = new Object();
+ construct();
+ canvasGraphics = new Graphics();
+ canvasMode = MODE_UNINITIALIZED;
+ keysPressed = new Vector();
+ }
+
+ /* (non-Javadoc)
+ * @see Displayable#eswtConstructShell(int)
+ */
+ Shell eswtConstructShell(int style) {
+ return super.eswtConstructShell(style /*| SWT.RESIZE*/);
+ }
+
+ /* (non-Javadoc)
+ * @see Displayable#eswtConstructContent(int)
+ */
+ Composite eswtConstructContent(int style) {
+ // Get JAD attribute
+ noBackground = JadAttributeUtil.isValue(JadAttributeUtil.ATTRIB_NOKIA_UI_ENHANCEMENT,
+ JadAttributeUtil.VALUE_CANVAS_HAS_BACKGROUND);
+ if (noBackground){
+ style |= SWT.NO_BACKGROUND;
+ }
+
+ // Get JAD attribute for S60 Selection Key Compatibility
+ selectionKeyCompatibility = JadAttributeUtil.isValue(JadAttributeUtil.ATTRIB_NOKIA_MIDLET_S60_SELECTION_KEY_COMPATIBILITY,
+ JadAttributeUtil.VALUE_TRUE);
+
+ // Get JAD attribute for MIDlet Tap Detection
+ String tapAttr = JadAttributeUtil.getValue(JadAttributeUtil.ATTRIB_NOKIA_MIDLET_TAP_DETECTION_OPTIONS);
+ if(tapAttr != null) {
+ if(tapAttr.indexOf(',') == -1) {
+ setDefaultTapValues();
+ }
+ else {
+ String twipString = tapAttr.substring(0, tapAttr.indexOf(',')).trim();
+ String timeoutString = tapAttr.substring(tapAttr.indexOf(',') + 1, tapAttr.length()).trim();
+
+ try {
+ twips = Integer.parseInt(twipString);
+ timeout = Integer.parseInt(timeoutString);
+
+ // Check for Negative Values
+ if( (twips < 0) && (timeout < 0) ) {
+ setDefaultTapValues();
+ }
+
+ if( (twips == 0) && (timeout == 0) ) {
+ disableTapDetection = true;
+ }
+
+ // if any one of the value is zero, set defaults
+ if( !((twips != 0) && (timeout != 0)) ) {
+ setDefaultTapValues();
+ }
+ }
+ catch (NumberFormatException e) {
+ // Alpha Numeric Values of Timeouts and Timeout
+ setDefaultTapValues();
+ }
+ }
+ }
+ else
+ {
+ setDefaultTapValues();
+ }
+
+ Composite canvasComp = super.eswtConstructContent(style);
+
+ // Read the on screen keypad settings from the jad attribute
+ String oskAttr = JadAttributeUtil
+ .getValue(JadAttributeUtil.ATTRIB_NOKIA_MIDLET_ON_SCREEN_KEYPAD);
+ if (oskAttr != null
+ && (!oskAttr.equalsIgnoreCase(JadAttributeUtil.VALUE_NO))
+ && ((oskAttr
+ .equalsIgnoreCase(JadAttributeUtil.VALUE_GAMEACTIONS)) || (oskAttr
+ .equalsIgnoreCase(JadAttributeUtil.VALUE_NAVIGATIONKEYS)))) {
+
+ // On screen keypad is required, On devices without keyboard it can
+ // be either navigation keys or navigation and game keys
+ onScreenkeypad = new CanvasKeypad(this, canvasComp, oskAttr);
+ }
+
+
+ return canvasComp;
+ }
+
+ /* (non-Javadoc)
+ * @see Displayable#eswtHandleShowCurrentEvent()
+ */
+ void eswtHandleShowCurrentEvent() {
+ super.eswtHandleShowCurrentEvent();
+ getContentComp().addPaintListener(paintListener);
+ getContentComp().addMouseListener(mouseListener);
+ getContentComp().addMouseMoveListener(mouseListener);
+ }
+
+ /* (non-Javadoc)
+ * @see Displayable#eswtHandleHideCurrentEvent()
+ */
+ void eswtHandleHideCurrentEvent() {
+ super.eswtHandleHideCurrentEvent();
+ getContentComp().removePaintListener(paintListener);
+ getContentComp().removeMouseListener(mouseListener);
+ getContentComp().removeMouseMoveListener(mouseListener);
+ }
+
+ /**
+ * Issues the request to repaint the whole Canvas.
+ */
+ public void repaint() {
+ repaint(0, 0, getWidth(), getHeight());
+ }
+
+ /**
+ * Issues the request to repaint the specified area of the Canvas. The
+ * request is processed asynchronously.
+ *
+ * @param x - left bound of the rectangle to redraw.
+ * @param y - top bound of the rectangle to redraw.
+ * @param width - width of the rectangle to redraw.
+ * @param height - height of the rectangle to redraw.
+ */
+ public void repaint(int x, int y, int width, int height) {
+ // Paint callback event is posted without any invalid area info.
+ // Invalid area info is kept in the member variables. Only one event
+ // per Canvas is added to the queue. If there are more repaint() calls
+ // before the already posted event has been served those are merged
+ // to the invalid area in the member variables without posting a new
+ // event.
+ synchronized(repaintLock) {
+ if (invalidate(x, y, width, height)) {
+ // Note that repaintPending doesn't mean that there's a repaint
+ // event in the queue. It means that the invalid area is going
+ // to be repainted and there's no need to add a new event.
+ // It's possible that the repaint event has already been
+ // removed from the queue but repaintPending is still true. In
+ // that case it's currently being processed and we can still
+ // add to the invalid area.
+ if (!repaintPending) {
+ EventDispatcher eventDispatcher = EventDispatcher.instance();
+ LCDUIEvent event = eventDispatcher.newEvent(
+ LCDUIEvent.CANVAS_PAINT_MIDLET_REQUEST, this);
+ event.widget = getContentComp();
+ eventDispatcher.postEvent(event);
+ repaintPending = true;
+ }
+ }
+ }
+ }
+
+ /**
+ * Switches the Canvas between full screen and non-full screen modes.
+ *
+ * @param mode - true switches the Canvas to the full-screen mode.
+ */
+ public void setFullScreenMode(boolean mode) {
+ finalMode = mode;
+ ESWTUIThreadRunner.syncExec(new Runnable() {
+ public void run() {
+ ((MobileShell) getShell()).setFullScreenMode(finalMode);
+ //set the CanvasKeypad to the required mode
+ if(onScreenkeypad != null) {
+ onScreenkeypad.setFullScreenMode(finalMode);
+ }
+ }
+ });
+ }
+
+ /**
+ * Processes all the issued paint requests.
+ */
+ public final void serviceRepaints() {
+ EventDispatcher.instance().serviceRepaints(this);
+ }
+
+ /**
+ * Checks if the Canvas supports pointer dragging events.
+ *
+ * @return true if the Canvas supports pointer dragging, false otherwise.
+ */
+ public boolean hasPointerMotionEvents() {
+ return true;
+ }
+
+ /**
+ * Checks if the Canvas supports pointer events.
+ *
+ * @return true if the Canvas supports pointer events, false otherwise.
+ */
+ public boolean hasPointerEvents() {
+ return true;
+ }
+
+ /**
+ * Is the Canvas double buffered.
+ *
+ * @return true if the Canvas is double buffered, false otherwise.
+ */
+ public boolean isDoubleBuffered() {
+ return true;
+ }
+
+ /**
+ * Queries if the Canvas supports key repeat events.
+ *
+ * @return true if Canvas supports key repeat events, false otherwise.
+ */
+ public boolean hasRepeatEvents() {
+ return true;
+ }
+
+ /**
+ * Returns game action for a specified key code.
+ *
+ * @param keyCode Key code to map to game action.
+ * @return Game action for a a specified key code or
+ * IllegalArgumentException.
+ */
+ public int getGameAction(int keyCode) {
+ return KeyTable.getGameAction(keyCode);
+ }
+
+ /**
+ * Returns the key code specific for a certain game action.
+ *
+ * @param gameAction - game action to be mapped to the key code.
+ * @return Key code that is mapped to the specified game action.
+ */
+ public int getKeyCode(int gameAction) {
+ return KeyTable.getKeyCode(gameAction);
+ }
+
+ /**
+ * Returns the key name specific for a certain key code.
+ *
+ * @param keyCode - key name to get the name of.
+ * @return String that contains textual name of the key specified by the key
+ * code.
+ */
+ public String getKeyName(int keyCode) {
+ return KeyTable.getKeyName(keyCode);
+ }
+ /**
+ * Gets height.
+ *
+ * @return Height of the Displayable in pixels.
+ */
+ public int getHeight() {
+ ESWTUIThreadRunner.syncExec(new Runnable() {
+ public void run() {
+ if( onScreenkeypad != null ) {
+ oskHeight = onScreenkeypad.getHeight();
+ }
+ }
+ });
+ return (super.getHeight() - oskHeight);
+
+ }
+
+
+ /**
+ * Callback to be implemented by the application to render the
+ * <code>Canvas</code>. The clip region of <code>Graphics</code> object
+ * specifies the area that needs to be updated. All the region has to be
+ * updated in <code>paint()</code> method.
+ * <p>
+ * Application should not take into account the source where the
+ * <code>paint()</code> request came from.
+ * <p>
+ * Any interaction with Graphics object outside of <code>paint()</code>
+ * method is undefined.
+ * <p>
+ * The application should never call <code>paint()</code> explicitly, it is
+ * called by the framework.
+ *
+ * @param g - the <code>Graphics</code> object to be used for graphical
+ * operations on the <code>Canvas.</code>
+ */
+ protected abstract void paint(Graphics g);
+
+ /**
+ * Callback to signal a key press.
+ *
+ * @param keyCode - key code of the key pressed.
+ */
+ protected void keyPressed(int keyCode) {
+ }
+
+ /**
+ * Callback to signal a key release.
+ *
+ * @param keyCode - key code of the key released.
+ */
+ protected void keyReleased(int keyCode) {
+ }
+
+ /**
+ * Callback to signal a key repeat. Happens when the key is pressed down for
+ * a long time.
+ *
+ * @param keyCode - key code of the key repeated.
+ */
+ protected void keyRepeated(int keyCode) {
+ }
+
+ /**
+ * Callback to signal pointer press event.
+ *
+ * @param x - X-coordinate of the tap point.
+ * @param y - Y-coordinate of the tap point.
+ */
+ protected void pointerPressed(int x, int y) {
+ }
+
+ /**
+ * Callback to signal pointer release event.
+ *
+ * @param x - X-coordinate of the pointer release point.
+ * @param y - Y-coordinate of the pointer release point.
+ */
+ protected void pointerReleased(int x, int y) {
+ }
+
+ /**
+ * Callback to signal pointer drag event.
+ *
+ * @param x - X-coordinate of the pointer drag point.
+ * @param y - Y-coordinate of the pointer drag point.
+ */
+ protected void pointerDragged(int x, int y) {
+ }
+
+ /**
+ * Callback similar to the one in <code>Displayable</code>. Additional
+ * case for <code>sizeChanged</code> to be called in <code>Canvas</code>
+ * is switching between full-screen mode by calling
+ * <code>setFullScreenMode()</code>.
+ */
+ protected void sizeChanged(int w, int h) {
+ }
+
+ /**
+ * showNotify() is the callback called before the Canvas is shown on the
+ * screen.
+ */
+ protected void showNotify() {
+ }
+
+ /**
+ * hideNotify() is the callback called after the Canvas is removed from the
+ * screen.
+ */
+ protected void hideNotify() {
+ }
+
+ /**
+ * Init GameCanvas frame buffer.
+ *
+ * @param supressKeys suppress game keys
+ * @return frame buffer
+ */
+ final void initGameCanvas(boolean suppressKeys) {
+ this.suppressGameKeys = suppressKeys;
+ }
+
+ /**
+ * Update game buffer graphics.
+ */
+ final void eswtUpdateGameBufferGraphics() {
+ if (gameBufferGraphics == null) {
+ gameBufferGraphics = new Graphics();
+ gameBufferGraphics.initBuffered(this, 0, 0, getWidth(), getHeight());
+ flushLock = gameBufferGraphics.getLock();
+ }
+ }
+
+ /**
+ * Get game canvas frame buffer graphics.
+ */
+ final Graphics getGameBufferGraphics() {
+ ESWTUIThreadRunner.safeSyncExec(new Runnable() {
+ public void run() {
+ eswtUpdateGameBufferGraphics();
+ }
+ });
+ return gameBufferGraphics;
+ }
+
+ CanvasKeypad getCanvasKeypad()
+ {
+ return onScreenkeypad;
+ }
+
+ boolean IsFullScreenMode()
+ {
+ return finalMode;
+ }
+
+ /**
+ * Return game key states for GameCanvas.
+ *
+ * @return game key states.
+ */
+ final int getGameKeyStates() {
+ int ret = gameKeyState;
+ gameKeyState = 0;
+ return ret;
+ }
+
+ void renderGraphics(final Graphics g) {
+ // Implementation missing. GameCanvas.paint() should by default render
+ // the the off-screen buffer at (0,0). Rendering of the buffer must be
+ // subject to the clip region and origin translation of the Graphics
+ // object.
+ }
+
+ /**
+ * Flushes the frameBuffer to the display.
+ *
+ * @param x
+ * @param y
+ * @param width
+ * @param height
+ */
+ void flushGameBuffer(final int x, final int y, final int width,
+ final int height) {
+ synchronized( flushLock ) {
+ ESWTUIThreadRunner.safeSyncExec(new Runnable() {
+ public void run() {
+ canvasMode = MODE_GAME_BUFFER_FLUSH;
+ ((CompositeExtension)getContentComp()).redrawNow(x, y, width, height);
+ gameBufferGraphics.resetCommandBuffer();
+ canvasMode = MODE_NORMAL;
+ }
+ });
+ }
+ }
+
+ /**
+ * Called by ShellListener when shell gets activated.
+ */
+ void handleShellActivatedEvent() {
+ super.handleShellActivatedEvent();
+
+ // reset the game key state
+ gameKeyState = 0;
+ canvasMode = MODE_NORMAL;
+ synchronized(cleanupLock) {
+ cleanupNeeded = true;
+ }
+
+ LCDUIEvent event = EventDispatcher.instance().newEvent(LCDUIEvent.CANVAS_SHOWNOTIFY, this);
+ EventDispatcher.instance().postEvent(event);
+ }
+
+ /**
+ * Called by ShellListener when shell gets de-activated.
+ */
+ void handleShellDeActivatedEvent() {
+ super.handleShellDeActivatedEvent();
+ LCDUIEvent event = EventDispatcher.instance().newEvent(LCDUIEvent.CANVAS_HIDENOTIFY, this);
+ EventDispatcher.instance().postEvent(event);
+ }
+
+ /*
+ * UI thread calls
+ */
+ void eswtHandleResizeEvent(int width, int height) {
+ super.eswtHandleResizeEvent(width, height);
+ canvasMode = MODE_NORMAL;
+ synchronized(cleanupLock) {
+ cleanupNeeded = true;
+ }
+ }
+
+ /*
+ * UI thread calls
+ */
+ void eswtHandleEvent(Event e) {
+ super.eswtHandleEvent(e);
+
+ if (e.type == SWT.KeyDown) {
+ doKeyPressed(e.keyCode);
+ }
+ else if (e.type == SWT.KeyUp) {
+ doKeyReleased(e.keyCode);
+ }
+
+ }
+
+ /*
+ * UI thread calls. Paint listener of the eSWT widget.
+ */
+ class CanvasShellPaintListener implements PaintListener {
+
+ public void paintControl(PaintEvent pe) {
+ switch (canvasMode) {
+ case MODE_BUFFER_FLUSH:
+ // Paint event initiated by us to paint the Canvas.
+ doBufferFlush(pe, canvasGraphics);
+ break;
+ case MODE_GAME_BUFFER_FLUSH:
+ // Paint event initiated by us to paint the GameCanvas.
+ doBufferFlush(pe, gameBufferGraphics);
+ break;
+ case MODE_NORMAL:
+ // Native toolkit is requesting an update of an area that has
+ // become invalid. Can't do anything here because the contents
+ // need to be queried from the MIDlet in another thread by
+ // a paint callback. For this a paint callback event is posted.
+ // For a moment the native toolkit thinks that the area has
+ // been validated when in truth it will be painted later after
+ // the paint callback has been executed.
+ EventDispatcher eventDispatcher = EventDispatcher.instance();
+ LCDUIEvent event = eventDispatcher.newEvent(
+ LCDUIEvent.CANVAS_PAINT_NATIVE_REQUEST,
+ javax.microedition.lcdui.Canvas.this);
+ event.x = pe.x;
+ event.y = pe.y;
+ event.width = pe.width;
+ event.height = pe.height;
+ event.widget = pe.widget;
+ eventDispatcher.postEvent(event);
+ break;
+ }
+ }
+ }
+
+ /*
+ * Dispatcher thread or the serviceRepaints()-thread calls.
+ */
+ final void doCallback(LCDUIEvent event) {
+ switch(event.type) {
+ case LCDUIEvent.CANVAS_PAINT_MIDLET_REQUEST: // fall through
+ case LCDUIEvent.CANVAS_PAINT_NATIVE_REQUEST:
+ doPaintCallback(event);
+ break;
+ case LCDUIEvent.CANVAS_HIDENOTIFY:
+ hideNotify();
+ break;
+ case LCDUIEvent.CANVAS_KEYPRESSED:
+ keyPressed(event.keyCode);
+ break;
+ case LCDUIEvent.CANVAS_KEYREPEATED:
+ keyRepeated(event.keyCode);
+ break;
+ case LCDUIEvent.CANVAS_KEYRELEASED:
+ keyReleased(event.keyCode);
+ break;
+ case LCDUIEvent.CANVAS_POINTERDRAGGED:
+ pointerDragged(event.x, event.y);
+ break;
+ case LCDUIEvent.CANVAS_POINTERPRESSED:
+ pointerPressed(event.x, event.y);
+ break;
+ case LCDUIEvent.CANVAS_POINTERRELEASED:
+ pointerReleased(event.x, event.y);
+ break;
+ case LCDUIEvent.CANVAS_SHOWNOTIFY:
+ showNotify();
+ break;
+ default:
+ super.doCallback(event);
+ break;
+ }
+ }
+
+ /*
+ * Dispatcher thread or the serviceRepaints()-thread calls.
+ */
+ private final void doPaintCallback(final LCDUIEvent event) {
+ // Decide the area going to be painted by the callback.
+ final int redrawNowX;
+ final int redrawNowY;
+ final int redrawNowW;
+ final int redrawNowH;
+ // Before this thread obtains the repaintLock any repaint() calls
+ // will still be adding to the invalid area that is going to be
+ // painted by this callback.
+ synchronized(repaintLock) {
+ if(event.type == LCDUIEvent.CANVAS_PAINT_NATIVE_REQUEST) {
+ // Merge with possibly existing repaint() requests
+ invalidate(event.x, event.y, event.width, event.height);
+ } else {
+ // Need to add a new event to the queue in subsequent repaint()
+ // calls.
+ repaintPending = false;
+ }
+
+ // Store the current area to be painted
+ redrawNowX = repaintX1;
+ redrawNowY = repaintY1;
+ redrawNowW = repaintX2-repaintX1;
+ redrawNowH = repaintY2-repaintY1;
+
+
+ // After releasing the lock the repaint() calls will start with
+ // new invalid area.
+ repaintX1 = repaintX2 = repaintY1 = repaintY2 = 0;
+
+ // Don't do the callback if there's nothing to paint
+ if(!((redrawNowW > 0) && (redrawNowH > 0))) {
+ return;
+ }
+ }
+
+ // Prepare the GC's buffer if not done yet
+ if (canvasGraphics.getCommandBuffer() == null) {
+ canvasGraphics.initBuffered(this, event.x, event.y, event.width, event.height);
+ }
+
+ // Clean the background if dirty, buffer the operations.
+ synchronized(cleanupLock) {
+ if (cleanupNeeded && noBackground) {
+ // UI thread can change the contentArea object reference at
+ // any time. Store the object reference locally to ensure it
+ // points to the same rectangle all the time.
+ Rectangle contentArea = getContentArea();
+
+ canvasGraphics.setClip(contentArea.x, contentArea.y,
+ contentArea.width, contentArea.height);
+ canvasGraphics.cleanBackground(contentArea);
+ cleanupNeeded = false;
+ }
+ }
+
+ // Clip must define the invalid area
+ canvasGraphics.setClip(redrawNowX, redrawNowY, redrawNowW, redrawNowH);
+
+ // The callback
+ paint(canvasGraphics);
+
+ // Wait until the UI thread is available. Then in the UI thread
+ // synchronously send a paint event.
+ ESWTUIThreadRunner.safeSyncExec(new Runnable() {
+ public void run() {
+ if(event.widget.isDisposed()) {
+ return;
+ }
+
+ canvasMode = MODE_BUFFER_FLUSH;
+
+ ((CompositeExtension) event.widget)
+ .redrawNow(redrawNowX, redrawNowY, redrawNowW, redrawNowH);
+ canvasGraphics.resetCommandBuffer();
+ canvasMode = MODE_NORMAL;
+ }
+
+ });
+ }
+
+ /*
+ * UI thread calls to flush the command buffer of a graphics context.
+ */
+ private final void doBufferFlush(PaintEvent event, Graphics graphics) {
+ event.gc.getGCData().internalGc.render(graphics.getCommandBuffer());
+ }
+
+ /*
+ * UI thread calls.
+ */
+ void doKeyPressed(int keyCode) {
+ Logger.method(this, "doKeyPressed", String.valueOf(keyCode));
+ boolean sendCallback = false;
+
+ if (!(updateGameKeyState(keyCode, true) && suppressGameKeys)) {
+ if( (selectionKeyCompatibility == true) && (keyCode == -5) ) {
+ if(finalMode == true) {
+ if(!((getNumCommands() > 0) && hasCommandListener()) ) {
+ sendCallback = true;
+ }
+ else {
+ sendCallback = false;
+ }
+ }
+ else {
+ sendCallback = true;
+ }
+ }
+ else if( (selectionKeyCompatibility == false) && (keyCode == -5) ) {
+ sendCallback = false;
+ }
+ else {
+ sendCallback = true;
+ }
+ }
+ else {
+ sendCallback = false;
+ }
+
+ if(sendCallback == true) {
+ LCDUIEvent event;
+
+ if (keysPressed.contains(new Integer(keyCode))) {
+ event = EventDispatcher.instance().newEvent(LCDUIEvent.CANVAS_KEYREPEATED, this);
+ }
+ else {
+ event = EventDispatcher.instance().newEvent(LCDUIEvent.CANVAS_KEYPRESSED, this);
+ }
+ event.keyCode = keyCode;
+ EventDispatcher.instance().postEvent(event);
+
+ }
+ }
+
+
+ /*
+ * UI thread calls.
+ */
+ void doKeyReleased(int keyCode) {
+ Logger.method(this, "doKeyReleased", String.valueOf(keyCode));
+ boolean sendCallback = false;
+ if (!(updateGameKeyState(keyCode, true) && suppressGameKeys)) {
+ if( (selectionKeyCompatibility == true) && (keyCode == -5) ) {
+ if(finalMode == true) {
+ if(!((getNumCommands() > 0) && hasCommandListener()) ) {
+ sendCallback = true;
+ }
+ else {
+ sendCallback = false;
+ }
+ }
+ else {
+ sendCallback = true;
+ }
+ }
+ else if( (selectionKeyCompatibility == false) && (keyCode == -5) ) {
+ sendCallback = false;
+ }
+ else {
+ sendCallback = true;
+ }
+ }
+ else {
+ sendCallback = false;
+ }
+
+ if(sendCallback == true) {
+
+ LCDUIEvent event = EventDispatcher.instance().newEvent(LCDUIEvent.CANVAS_KEYRELEASED, this);
+ event.keyCode = keyCode;
+ EventDispatcher.instance().postEvent(event);
+
+ }
+ }
+
+ /**
+ * Updates game key states and returns if the key was a game key.
+ */
+ private boolean updateGameKeyState(int keyCode, boolean addKeyState) {
+ // Ignore key repeat events
+ if (ESWTUIThreadRunner.getKeyRepeatCount() > 1) {
+ return true;
+ }
+ try {
+ int gameAction = KeyTable.getGameAction(keyCode);
+ if (addKeyState) {
+ // set bitfield
+ gameKeyState |= (1 << gameAction);
+ }
+ return true;
+ }
+ catch (IllegalArgumentException iae) {
+ return false;
+ }
+ }
+
+ private void setDefaultTapValues() {
+ twips = DEFAULT_TWIPS;
+ timeout = DEFAULT_TIMEOUT;
+ }
+
+ class CanvasShellMouseListener implements
+ org.eclipse.swt.events.MouseListener,
+ org.eclipse.swt.events.MouseMoveListener {
+
+ public void mouseDoubleClick(MouseEvent arg0) {
+ }
+
+ public void mouseDown(MouseEvent event) {
+ LCDUIEvent e = EventDispatcher.instance().newEvent(LCDUIEvent.CANVAS_POINTERPRESSED,
+ javax.microedition.lcdui.Canvas.this);
+ e.x = event.x;
+ e.y = event.y;
+ EventDispatcher.instance().postEvent(e);
+
+ if(!disableTapDetection) {
+ // Supress Drag events
+ suppressDragEvent = true;
+
+ pointerDownX = event.x;
+ pointerDownY = event.y;
+
+ // Create and Schedule Timer
+ timerTask = new CanvasTimerTask();
+ timer.schedule(timerTask, timeout);
+ }
+ }
+
+ public void mouseUp(MouseEvent event) {
+ int pointerUpX = event.x;
+ int pointerUpY = event.y;
+
+ if(!disableTapDetection) {
+ if (timerTask != null) {
+ timerTask.cancel();
+ timerTask = null;
+ }
+
+ // If Timer not expired and Mouseup is withing rectangle assign
+ // PointercDown to Pinter Up
+ if(suppressDragEvent && checkWithinRect(event.x, event.y)) {
+ pointerUpX = pointerDownX;
+ pointerUpY = pointerDownY;
+ suppressDragEvent = false;
+ }
+ }
+
+ LCDUIEvent e = EventDispatcher.instance().newEvent(LCDUIEvent.CANVAS_POINTERRELEASED,
+ javax.microedition.lcdui.Canvas.this);
+ e.x = pointerUpX;
+ e.y = pointerUpY;
+ EventDispatcher.instance().postEvent(e);
+ }
+
+ public void mouseMove(MouseEvent event) {
+ // Check for timeout expiration and if PointerUp falls outside the rectangle
+ if( disableTapDetection || (!suppressDragEvent) || !checkWithinRect(event.x, event.y)) {
+ LCDUIEvent e = EventDispatcher.instance().newEvent(LCDUIEvent.CANVAS_POINTERDRAGGED,
+ javax.microedition.lcdui.Canvas.this);
+ e.x = event.x;
+ e.y = event.y;
+ EventDispatcher.instance().postEvent(e);
+ }
+ }
+
+ boolean checkWithinRect(int x, int y) {
+ // Get pixel per inch
+ Point P = Display.getCurrent().getDPI();
+
+ float xPxielwidth = (twips * P.x) / 1440;
+ float yPixelHeight = (twips * P.y) / 1440;
+
+ int RightX = pointerDownX + (int) xPxielwidth;
+
+ // If the rectange width falls outside the canvas area
+ if(RightX > getWidth()) {
+ RightX = getWidth();
+ }
+
+ int LeftX = pointerDownX - (int) xPxielwidth;
+
+ // If the rectange width falls outside the canvas area
+ if(LeftX < 0)
+ LeftX = 0;
+
+ int TopY = pointerDownY - (int) yPixelHeight;
+
+ // If the rectange height falls outside the canvas area
+ if( TopY < 0 )
+ TopY = 0;
+
+ int DownY = pointerDownY + (int) yPixelHeight;
+
+ // If the rectange heightfalls outside the canvas area.
+ if( DownY > getHeight() )
+ DownY = getHeight();
+
+ // Find the PointerUp is within rectange
+ if( (x >= LeftX ) && (x <= RightX) ) {
+ if( (y >= TopY ) && (y <= DownY) ) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+ }
+
+ private boolean invalidate(int x, int y, int width, int height) {
+ // Regularize bounds
+ final int x1 = x;
+ final int y1 = y;
+ final int x2 = x + width;
+ final int y2 = y + height;
+
+ // Union the current and new damaged rects
+ final boolean valid = ((repaintX2 - repaintX1) <= 0) && ((repaintY2 - repaintY1) <= 0);
+ if (!valid) {
+ repaintX1 = Math.min(repaintX1, x1);
+ repaintY1 = Math.min(repaintY1, y1);
+ repaintX2 = Math.max(repaintX2, x2);
+ repaintY2 = Math.max(repaintY2, y2);
+ } else {
+ repaintX1 = x1;
+ repaintY1 = y1;
+ repaintX2 = x2;
+ repaintY2 = y2;
+ }
+
+ // UI thread can change the the contentArea object reference at
+ // any time. Store the object reference locally to ensure it
+ // points to the same rectangle all the time.
+ Rectangle contentArea = getContentArea();
+ if(contentArea == null) return valid;
+ final int w = contentArea.width;
+ final int h = contentArea.height;
+
+ // Clip to bounds
+ repaintX1 = repaintX1 > 0 ? repaintX1 : 0;
+ repaintY1 = repaintY1 > 0 ? repaintY1 : 0;
+ repaintX2 = repaintX2 < w ? repaintX2 : w;
+ repaintY2 = repaintY2 < h ? repaintY2 : h;
+
+ return valid;
+ }
+
+ class CanvasTimerTask extends TimerTask {
+
+ public void run() {
+ suppressDragEvent = false;
+ }
+ }
+}