greetingcardscreen.java

greetingcard是手机贺卡的制作软件。小程序

import java.util.Vector;

import java.io.DataInputStream;

import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;

import com.nokia.mid.ui.FullCanvas;

public class GreetingCardScreen extends FullCanvas implements Runnable {
    
    private GreetingCardPlayer cardPlayer;
    private GreetingCardImage cardImage;
    private String textOnScreen;
    private byte state;

    private int scrollCursor;
    private String[] scrollTextLines;
    private int bgc = 0x000040B4;
    private int tfgc = 0x0000AAFF;
    private int tbgc = 0;
    private int thc = 0x00ffff00;
    private Font font = Font.getFont(Font.FACE_PROPORTIONAL, Font.STYLE_BOLD, Font.SIZE_LARGE);
    private int msgTextSeq = 0;
    private String userMsg = "";
    

    public GreetingCardScreen(GreetingCardPlayer cardPlayer, GreetingCardImage cardImage, DataInputStream dis) 
    {
        this.cardPlayer = cardPlayer;
        this.cardImage = cardImage;
        state = 0;
    }

    public void initparam(String sMsg, String sBGC, String sTFGC, String sTBGC, String sTHC, String sFont) 
    {
    	if(sFont != null && sFont.length() > 0) 
    	{
            int iFont = Integer.parseInt(sFont);
            int face = (iFont & (byte)0xC0) >> 6;
            switch(face) 
            {
                case 0:
                    face = Font.FACE_MONOSPACE;
                    break;
                case 1:
                    face = Font.FACE_PROPORTIONAL;
                    break;
                case 2:
                    face = Font.FACE_SYSTEM;
                    break;
            }
            
            int size = (iFont & (byte)0x30) >> 4;
            switch(size) 
            {
                case 0:
                    size = Font.SIZE_SMALL;
                    break;
                case 1:
                    size = Font.SIZE_MEDIUM;
                    break;
                case 2:
                    size = Font.SIZE_LARGE;
                    break;
            }
            
            int style = 0;
            if((iFont & 0x01) != 0)
            {
                style |= Font.STYLE_PLAIN;
            }
            if((iFont & 0x02) != 0)
            {
                style |= Font.STYLE_BOLD;
            }
            if((iFont & 0x04) != 0)
            {
                style |= Font.STYLE_ITALIC;
            }
            if((iFont & 0x08) != 0)
            {
                style |= Font.STYLE_UNDERLINED;
            }
        }
        
        if(sBGC != null && sBGC.length() > 0)
        {
            bgc = Integer.parseInt(sBGC);
        }
        
        if(sTFGC != null && sTFGC.length() > 0)
        {
            tfgc = Integer.parseInt(sTFGC);
        }
        
        if(sTBGC != null && sTBGC.length() > 0)
        {
            tbgc = Integer.parseInt(sTBGC);
        }
        
        if(sTHC != null && sTHC.length() > 0)
        {
            thc = Integer.parseInt(sTHC);
        }
        
        //sMsg = "\u60A8\u5C06";
        if(sMsg != null && sMsg.length() > 0) 
        {
        	userMsg = sMsg;
        }

    }

    
    public boolean init() 
    {
        state = 1; // Init Page
        return true;
    }
    
    
    private void loadScrollText() 
    {
        if(scrollTextLines != null) 
        {
            state = 2;	// Page 3 with user message
            scrollCursor = getHeight() / 2;
            Thread t = new Thread(this);
            t.start();
        } 
        else 
        {
        	state = 4; // Normal Page
        }
        repaint();
        serviceRepaints();
    }
    

        
    private void nextPage()
    {
    	if(msgTextSeq == 0)// Page 2
    	{
    		cardImage.secondPage();
    		textOnScreen = "";
    		msgTextSeq++;
            repaint();
            serviceRepaints();
    	}
    	else if(msgTextSeq == 1) // Page 3 with user message
    	{
    		msgTextSeq++;
    		cardImage.thirdPage();
    		textOnScreen = userMsg;
    		scrollTextLines = wrapText(font, getWidth(), userMsg);
    		loadScrollText();
    	}
    	else // Page 1
    	{
    		state = 4;
    		msgTextSeq = 0;
    		textOnScreen = "";
    		cardImage.redofirstPage();
            repaint();
            serviceRepaints();    		
    	}
    }
    
    
    public void start() 
    {
	    System.gc();
	    textOnScreen = "";
        cardImage.firstPage();
        state = 4;
        repaint();
        serviceRepaints();
    }
    
    
    private void quit() 
    {
        cardPlayer.exit();
    }
    
    
    private String[] wrapText(Font f, int allowWidth, String sText) 
    {
        allowWidth -= 10;
        
        char[] ca = new char[sText.length()];
        sText.getChars(0, sText.length(), ca, 0);
        if(f.charsWidth(ca, 0, ca.length) <= allowWidth) 
        {
            String[] s = new String[1];
            s[0] = sText;
            return s;
        }
        
        Vector v = new Vector();
        
        int textWidth = 0;
        int breakIdx = -1;
        for(int i = 0; i < sText.length(); i++) 
        {
            char c = sText.charAt(i);
            textWidth += f.charWidth(c);
            if(c == '\n') 
            {
               String line = sText.substring(0, i);
               if(sText.length() > line.length())
                  sText = sText.substring(line.length()+1);
               else
                  sText = "";
                textWidth = 0;
                i = -1;
                v.addElement(line);
            } 
            else if(textWidth <= allowWidth) 
            {
                if(c == ' ' || c > 127)
                {
                	breakIdx = i;
                }
            } 
            else 
            {
                String line = "";
                if(breakIdx < 0) {
                    line = sText.substring(0, i);
                } else {
                    line = sText.substring(0, breakIdx+1);
                }
                if(sText.length() > line.length()) {
                    sText = sText.substring(line.length());
                } else {
                    sText = "";
                }
                textWidth = 0;
                breakIdx = i = -1;
                v.addElement(line);
            }
        }
        
        if(sText.length() > 0)
        {
            v.addElement(sText);
        }
        
        if(v.size() == 0) 
        {
            return null;
        }
        
        String[] lines = new String[v.size()];
        for(int i = 0; i < v.size(); i++) 
        {
            lines[i] = (String)v.elementAt(i);
        }
        
        v = null;
        System.gc();
        
        return lines;
    }

    
    private void drawString(Graphics g, String s, int fgc, int bgc, int x, int y, int anchor) 
    {
    	g.setColor(bgc);
    	g.drawString(s, x+1, y+1, anchor);
    	g.drawString(s, x-1, y-1, anchor);
    	g.drawString(s, x+1, y, anchor);
    	g.drawString(s, x, y+1, anchor);
    	g.drawString(s, x-1, y, anchor);
    	g.drawString(s, x, y-1, anchor);
    	g.drawString(s, x+1, y-1, anchor);
    	g.drawString(s, x-1, y+1, anchor);
        g.setColor(fgc);
        g.drawString(s, x, y, anchor);
    }

    private void paintPlaying(Graphics g) 
    {
    	g.setColor(0);
    	g.setClip(0, 0, getWidth(), getHeight());
    	g.fillRect(0, 0, getWidth(), getHeight());

    	cardImage.drawCardScreen(g, getWidth(), getHeight());
    	
    	int h = font.getHeight();
    	int y2 = getHeight() - h - 2;
    	int y1 = y2 - h - 2;
    	g.setFont(font);
    	if(textOnScreen != null)
    	{
        		drawString(g, textOnScreen, tfgc, tbgc, 3, y1, Graphics.TOP|Graphics.LEFT);
    	}
    }

    private void paintLoading(Graphics g) 
    {
        g.setColor(0);
        g.fillRect(0, 0, getWidth(), getHeight());
        
        if(cardImage.currentScreen != null)
        {
            g.drawImage(cardImage.currentScreen, getWidth()/2, getHeight()/2, Graphics.HCENTER|Graphics.VCENTER);
        }
    }
    
    private void paintScrollText(Graphics g) 
    {
        g.setFont(font);
        g.setColor(bgc);
        g.fillRect(0, 0, getWidth(), getHeight());

        if(cardImage.currentScreen != null)
        {
        	g.drawImage(cardImage.getNextPage(), getWidth()/2, getHeight()/2, Graphics.HCENTER|Graphics.VCENTER);
        }
        
        int h = font.getHeight()+2;
        int y = scrollCursor;
        
        for(int i = 0; i < scrollTextLines.length; i++) 
        {
            if(h*2+y >= 0) 
            {
            	drawString(g, scrollTextLines[i], thc, tbgc, getWidth()/2, y, Graphics.TOP|Graphics.HCENTER);
            }
            if(i == scrollTextLines.length - 1 && y < 10) 
            {
            	scrollCursor = getHeight() / 2;
                break;
            }
            y += h;
            if(y > getHeight())
            {
            	break;
            }
        }
    }
    
    /**
     * paint
     */
    public void paint(Graphics g) 
    {
        switch(state) 
        {
            case 0:
                paintLoading(g);
                break;
            case 2:
                paintScrollText(g);
                break;
            case 4:
                paintPlaying(g);
                break;
        }

    }
    
 
    
    /**
     * Called when a key is pressed.
     */
    protected  void keyPressed(int keyCode) 
    {
        int action = getGameAction(keyCode);
        if(keyCode == KEY_POUND || keyCode == KEY_STAR)
        {
        	quit();
        }
        
        if(state == 4) 
        {
        	nextPage();
        }
        else
        {
        	nextPage();
        	repaint();        	
        }

    }
        
    public void playScrollText() 
    {
        while(state == 2 && scrollTextLines != null) 
        {
            repaint();
            scrollCursor -= 1;
            try { Thread.sleep(30); } catch(Exception e) {}
        }
    }
    
    
    public void run() 
    {
        if(state == 2)
        {
            playScrollText();
        }
    } 

            
	public Image resizeImage(Image image) 
    {
		int srcWidth = image.getWidth();
		int srcHeight = image.getHeight();
		
		int newWidth = 0;
		int newHeight = 0;
		newWidth = getWidth() - 15;
		newHeight = getHeight() - 15;
    	 
		if(newWidth < 128 || newWidth < 128)
		{
			newWidth = srcWidth;
			newHeight = srcHeight;
		}
		Image newImage = Image.createImage(newWidth, newHeight);
		Graphics g = newImage.getGraphics();

		for (int y = 0; y < newHeight; y++) 
		{
			for (int x = 0; x < newWidth; x++) 
			{
				g.setClip(x, y, 1, 1);
				int dx = x * srcWidth / newWidth;
				int dy = y * srcHeight / newHeight;
				g.drawImage(image, x - dx, y - dy,
						Graphics.LEFT | Graphics.TOP);
			}
		}
		
		Image immutableImage = Image.createImage(newImage);
		
		return immutableImage;
    }
  
}