fonteffect.java

索爱系统字体特效制作 ,索爱系统字体特效制作

/*****************************************************************************

 Description: Changes the layout of a text draw on a image.
               - Color
               - Monospace
               - Background masking

 Created By: Oscar Vivall
 
 @file        FontEffect.java

 COPYRIGHT All rights reserved Sony Ericsson Mobile Communications AB 2004.
 The software is the copyrighted work of Sony Ericsson Mobile Communications AB.
 The use of the software is subject to the terms of the end-user license 
 agreement which accompanies or is included with the software. The software is 
 provided "as is" and Sony Ericsson specifically disclaim any warranty or 
 condition whatsoever regarding merchantability or fitness for a specific 
 purpose, title or non-infringement. No warranty of any kind is made in 
 relation to the condition, suitability, availability, accuracy, reliability, 
 merchantability and/or non-infringement of the software provided herein.

*****************************************************************************/

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class FontEffect {
    public static final int EFFECT_MASK = 1,
                             EFFECT_MONOSPACE = 2,
                             EFFECT_COLOR = 4;

    private Font font;
    private int textWidth, textHeight; // this will be the size of the image.

    private Image fontImage;
    private Graphics graphics;
    
    private int fontColor = 0x00;
    private int backgroundColor = 0xFFFFFFFF;
    private int effect = 0;
    private String text;

    public FontEffect(String s){
        font = Font.getDefaultFont();
        text = s;
        
        createImage();
    }

    public void applyEffect(int e){
        System.out.println("applyEffect:" + e);
        effect = e;

        doEffect();
    }

    public void setColor(int argb){
        System.out.println("setColor");
        fontColor = argb;
        doEffect();
    }

    public void setFont(Font f){
        font = f;
        createImage();
        doEffect();
    }

    public Image getImage(){
        return fontImage;
    }

    public void render(Graphics g, int x, int y, int anchor){
        g.drawImage(fontImage, x, y, anchor);
    }

    private void createImage(){
        
        textWidth = font.stringWidth(text);
        textHeight = font.getHeight();
        
        fontImage = null;
        fontImage = Image.createImage(textWidth, textHeight); // image with a white background.

        backgroundColor = 0xFFFFFFFF;

        graphics = fontImage.getGraphics();
        graphics.setFont(font);
        graphics.setColor(fontColor);
        graphics.drawString(text, 0, 0, 0);
    }

    private void doEffect(){
        if((effect & EFFECT_MONOSPACE) == EFFECT_MONOSPACE){
            monoSpaceEffect();
        }

        if((effect & EFFECT_MASK) == EFFECT_MASK){
            maskEffect();
        }

        if((effect & EFFECT_COLOR) == EFFECT_COLOR){
            colorEffect();
        }
    }

    private void monoSpaceEffect(){
        System.out.println("monoSpaceEffect");
        int charWidth = font.charWidth('W');
        textWidth = charWidth * text.length();
        fontImage = null;
        fontImage = Image.createImage(textWidth, textHeight); // image with a white background.
        backgroundColor = 0xFFFFFFFF;

        graphics = fontImage.getGraphics();
        graphics.setFont(font);
        graphics.setColor(0x00);

        for(int i=0; i<text.length(); i++){
            graphics.drawChar(text.charAt(i),i*charWidth + charWidth/2, 0, Graphics.TOP | Graphics.HCENTER);
        }
    }

    private void maskEffect(){
        System.out.println("maskEffect");
        int []data = new int[fontImage.getWidth() * fontImage.getHeight()];
        fontImage.getRGB(data, 0, fontImage.getWidth(), 0, 0, fontImage.getWidth(), fontImage.getHeight());

        for(int i=0; i<data.length; i++){
            if(data[i]==backgroundColor){
                data[i] = (data[i]&0x00FFFFFF);
            }
        }
        backgroundColor = (backgroundColor & 0x00FFFFFF);
        fontImage = null;
        fontImage = Image.createRGBImage(data, textWidth, textHeight, true);
    }
    

    /*
     *  Change the color of the font from the selected color fading to black.
     */
    private void colorEffect(){
        System.out.println("colorEffect");
        int []data = new int[fontImage.getWidth() * fontImage.getHeight()];
        fontImage.getRGB(data, 0, fontImage.getWidth(), 0, 0, fontImage.getWidth(), fontImage.getHeight());
        int newColor = fontColor;
        int r = (fontColor & 0x00FF0000)>>16;
        int g = (fontColor & 0x0000FF00)>>8;
        int b = (fontColor & 0x000000FF);

        int offsetR = r/fontImage.getHeight();
        int offsetG = g/fontImage.getHeight();
        int offsetB = b/fontImage.getHeight();
        for(int i=0; i<data.length; i++){
            if(data[i] != backgroundColor){
                data[i] = newColor;
            }
            if(i%textWidth == 0){
                if(r>offsetR)
                    r -= offsetR;
                if(g>offsetG)
                    g -= offsetG;
                if(b>offsetB)
                    b -= offsetB;

                newColor = 0xFF000000;
                newColor += (r<<16);
                newColor += (g<<8);
                newColor += b;
            }
        }

        fontImage = null;
        fontImage = Image.createRGBImage(data, textWidth, textHeight, true);
    }
}