implementation.java

来自「j2me设计的界面包」· Java 代码 · 共 905 行 · 第 1/3 页

/*
 * 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;

import com.sun.lwuit.animations.Animation;
import com.sun.lwuit.animations.Transition;
import com.sun.lwuit.geom.Rectangle;
import com.sun.lwuit.plaf.UIManager;
import java.util.Vector;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.TextBox;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.media.Player;
import javax.microedition.media.control.VideoControl;
import javax.microedition.midlet.MIDlet;

/**
 * This class implements many of the implementation details related to Display
 * that shouldn't be exposed by the API normally. It acts as the canvas, the
 * thread for the events and a command listener which are 3 unrelated tasks.
 * The purpose of using a single class for these 3 tasks is reduced class count
 * and thus reduced overhead.
 * 
 * @author Shai Almog
 */
class Implementation extends GameCanvas implements Runnable, CommandListener {
    private static final int POINTER_PRESSED = 1;
    private static final int POINTER_RELEASED = 2;
    private static final int POINTER_DRAGGED = 3;
    private static final int KEY_PRESSED = 4;
    private static final int KEY_RELEASED = 5;
    private static final int SIZE_CHANGED = 7;
    
    private static final AlertType[] TYPES = new AlertType[] {
        AlertType.ALARM, AlertType.CONFIRMATION, AlertType.ERROR, 
        AlertType.INFO, AlertType.WARNING
    };
    
    /**
     * The command used for accepting a text field change
     */
    private static Command CONFIRM_COMMAND;

    /**
     * Indicates the maximum drawing speed of no more than 10 frames per second
     * by defult (this can be increased or decreased) the advantage of limiting
     * framerate is to allow the CPU to perform other tasks besides drawing.
     * Notice that when no change is occuring on the screen no frame is drawn and
     * so a high/low FPS will have no effect then.
     */
    private int framerateLock = 30;

    /**
     * The command used for canceling a text field change
     */
    private static Command CANCEL_COMMAND;

    /**
     * The currently edited text box used to input into text field, this is a MIDP implementation
     * detail.
     */
    private TextBox currentTextBox;
    
    /**
     * The currently edited text component that will be updated after the dismissal
     * of the text box
     */
    private Component currentTextComponent;
    
    private boolean flushGraphicsBug;
    private int transitionDelay;
    private Graphics wrapper = new Graphics();

    /**
     * Elements waiting for a paint
     */
    //private Vector paintQueue = new Vector();
    private Animation[] paintQueue = new Animation[50];
    private Animation[] paintQueueTemp = new Animation[50];
    private int paintQueueFill = 0;

    /**
     * Events to broadcast on the EDT
     */
    private Vector inputEvents = new Vector();

    private static javax.microedition.lcdui.Display display;
    
    private boolean keyRepeatCharged;
    private long nextKeyRepeatEvent;
    private int keyRepeatValue;
    private int keyRepeatInitialIntervalTime = 800;
    private int keyRepeatNextIntervalTime = 10;
    private RunnableWrapper waitForEdit;
    private boolean block = false;
    private int dragActivationCounter = 0;
    
    
    void init(Object m) {
        display = javax.microedition.lcdui.Display.getDisplay((MIDlet)m);
        //display.setCurrent(this);
        setSoftKeyCodes((MIDlet)m);
    }
    
    /**
     * Plays sound for the dialog
     */
    void playDialogSound(final int type) {
        TYPES[type - 1].playSound(display);
    }    
    
    void confirmControlsView() {
        if(display == null){
            throw new IllegalStateException("First call Display.setDisplay(javax.microedition.lcdui.Display d) method");
        }
        if(display.getCurrent() != this){
            setCurrent(this);
        }
    }

    private void setCurrent(Displayable d){
        if(display == null){
            throw new IllegalStateException("First call Display.setDisplay(javax.microedition.lcdui.Display d) method");
        }
        if(d instanceof Canvas) {
            ((Canvas)d).setFullScreenMode(true);
        } 
        display.setCurrent(d);
        
        // wait for call serially to complete to make sure the full screen mode actually worked..,
        if(Display.getInstance().isEdt()) {
            // using Thread as a runnable implementation that doesn't do anything...
            RunnableWrapper c = new RunnableWrapper(new Thread(), 0);
            display.callSerially(c);
            synchronized(Display.lock) {
                while(!c.isDone()) {
                    try {
                        Display.lock.wait(5);
                    } catch(InterruptedException err) {}
                }
            }
        }
    }
    
    /**
     * Vibrates the device for the given length of time
     * 
     * @param duration length of time to vibrate
     */
    public void vibrate(int duration) {
        display.vibrate(duration);
    }
    
    /**
     * Flash the backlight of the device for the given length of time
     * 
     * @param duration length of time to flash the backlight
     */
    public void flashBacklight(int duration) {
        display.flashBacklight(duration);
    }

    /**
     * Indicates the maximum frames the API will try to draw every second
     * by defult this is set to 10. The advantage of limiting
     * framerate is to allow the CPU to perform other tasks besides drawing.
     * Notice that when no change is occuring on the screen no frame is drawn and
     * so a high/low FPS will have no effect then.
     * 10FPS would be very reasonable for a business application.
     * 
     * @param rate the frame rate
     */
    public void setFramerate(int rate) {
        framerateLock = 1000 / rate;
    }
    

    /**
     * Indicates the maximum frames the API will try to draw every second
     * 
     * @return the frame rate
     */
    public int getFrameRate() {
        return 1000 / framerateLock;
    }
    
    private void setKnownSoftKeyCodes() {
        try {
            Class.forName("com.siemens.mp.game.Light");
            Form.leftSK = -1;
            Form.rightSK = -4;
            Form.clearSK = -12;
            return;
        } catch(ClassNotFoundException _ex) { }
        try {
            Class.forName("com.motorola.phonebook.PhoneBookRecord");
            Form.leftSK = -21;
            Form.rightSK = -22;
            return;
            //maybe Motorola A1000 has different keyCodes
            //Left soft key: Key code -10,
            //Right soft key: Key code -11,
        } catch(ClassNotFoundException _ex) { }
        try {
            Class.forName("com.nokia.mid.ui.FullCanvas");
            Form.leftSK = -6;
            Form.rightSK =-7;
            return;
        } catch(ClassNotFoundException _ex) { }
        try {
            Class.forName("net.rim.device.api.system.Application");
            //there are no soft keys on the Blackberry
            //instead use the Q and P keys
            Form.leftSK = 113;
            Form.rightSK = 112;
            //some BB devices use O as the most right key
            Form.rightSK2 = 111;
            Form.clearSK = 8;
            return;
        } catch (ClassNotFoundException ex) { }
        // detecting LG  
        try {  
            // iden device
            Class.forName("com.mot.iden.util.Base64");  
            Form.clearSK = -5000;
            Form.leftSK = -20;
            Form.rightSK = -21;
            return;
        } catch (Throwable ex) { }
        try {
            Class.forName("mmpp.media.MediaPlayer");  
            Form.clearSK = -204;
        } catch(ClassNotFoundException ex) {}
        try {
            if(getKeyName(-6).toUpperCase().indexOf("SOFT") >= 0) {
                Form.leftSK = -6;
                Form.rightSK = -7;
                return;
            }
            if(getKeyName(21).toUpperCase().indexOf("SOFT") >= 0) {
                Form.leftSK = 21;
                Form.rightSK = 22;
                return;
            }
        } catch(Exception ex) { }
        boolean leftInit = false;
        boolean rightInit = false;
        for(int i = -127; i < 127; i++) {
            if(leftInit && rightInit){  //I have added this if to avoid unnecessary loops
                return; //but the main reason is that sometimes after the correct negative values were initialized also positive
            }          // keycodes had "soft" in the name.
            try {
                if(getKeyName(i).toUpperCase().indexOf("SOFT") < 0)
                    continue;
                if(getKeyName(i).indexOf("1") >= 0) {
                    Form.leftSK = i;
                    leftInit = true;
                }
                if(getKeyName(i).indexOf("2") >= 0) {
                    Form.rightSK = i;
                    rightInit = true;
                }
                continue;
            } catch(Exception ex) {
                
            }
        }
    }
    
    int getDisplayWidth() {
        return getWidth();
    }

    int getDisplayHeight() {
        return getHeight();
    }