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CanvasImplementation.java
Package: LWUIT1.3code.rar [view]
Upload User: haobig99
Upload Date: 2022-06-15
Package Size: 369k
Code Size: 5k
Category:
J2ME
Development Platform:
Java
- /*
- * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Sun designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Sun in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- */
- package com.sun.lwuit.impl.midp;
- import com.sun.lwuit.Display;
- import javax.microedition.lcdui.Canvas;
- import javax.microedition.lcdui.Command;
- import javax.microedition.lcdui.CommandListener;
- import javax.microedition.lcdui.Displayable;
- /**
- * An implementation of LWUIT based on game canvas, this is the default implementation
- * class for LWUIT which most customizers should extend to enhance.
- *
- * @author Shai Almog
- */
- public class CanvasImplementation extends GameCanvasImplementation {
- private class C extends Canvas implements CommandListener, Runnable {
- private javax.microedition.lcdui.Image backBuffer;
- private boolean done;
- C() {
- setFullScreenMode(true);
- }
- public void run() {
- while (!done) {
- synchronized (getDisplayLock()) {
- try {
- getDisplayLock().wait(50);
- } catch (InterruptedException ex) {
- ex.printStackTrace();
- }
- }
- }
- }
- public void setDone(boolean done) {
- this.done = done;
- synchronized (getDisplayLock()) {
- getDisplayLock().notify();
- }
- }
- public void commandAction(Command c, Displayable d) {
- if (d == currentTextBox) {
- display.setCurrent(this);
- if (c == CONFIRM_COMMAND) {
- // confirm
- String text = currentTextBox.getString();
- Display.getInstance().onEditingComplete(currentTextComponent, text);
- }
- currentTextBox = null;
- setDone(true);
- }
- }
- public javax.microedition.lcdui.Graphics getGraphics() {
- if(backBuffer == null || backBuffer.getWidth() != getWidth() || backBuffer.getHeight() != getHeight()) {
- backBuffer = javax.microedition.lcdui.Image.createImage(getWidth(), getHeight());
- }
- return backBuffer.getGraphics();
- }
- public void paint(javax.microedition.lcdui.Graphics g) {
- if(backBuffer != null) {
- g.drawImage(backBuffer, 0, 0, javax.microedition.lcdui.Graphics.TOP | javax.microedition.lcdui.Graphics.LEFT);
- }
- }
- protected void keyPressed(final int keyCode){
- CanvasImplementation.this.keyPressed(keyCode);
- }
- protected void keyReleased(final int keyCode){
- CanvasImplementation.this.keyReleased(keyCode);
- }
- protected void pointerDragged(final int x, final int y){
- CanvasImplementation.this.pointerDragged(x, y);
- }
- protected void pointerPressed(final int x,final int y){
- CanvasImplementation.this.pointerPressed(x, y);
- }
- protected void pointerReleased(final int x,final int y){
- CanvasImplementation.this.pointerReleased(x, y);
- }
- protected void sizeChanged(int w, int h){
- CanvasImplementation.this.sizeChanged(w, h);
- }
- }
- /**
- * @inheritDoc
- */
- protected Canvas createCanvas() {
- return new C();
- }
- /**
- * @inheritDoc
- */
- public void flushGraphics(int x, int y, int width, int height) {
- getCanvas().repaint(x, y, width, height);
- }
- /**
- * @inheritDoc
- */
- public void flushGraphics() {
- getCanvas().repaint();
- }
- /**
- * @inheritDoc
- */
- public Object getNativeGraphics() {
- return ((C)getCanvas()).getGraphics();
- }
- }