roundeddrawer.java

The Funambol J2ME Mail Client aims to be a light, easy to use, free email client for J2ME devices.

/*
 * Copyright (C) 2006-2007 Funambol
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *
 */


package com.funambol.mailclient.ui.view;

import com.funambol.util.Log;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;

/**
 * a drawer with rounded corners
 */
public class RoundedDrawer implements Drawer {
    
    private  GraphicalTheme graphicalTheme;
    
    private static final int ARC_WIDTH=15;
    private static final int ARC_HEIGHT=10;
    //private static final String CONTINUE_STRING="..";
    
    private Font font;
    private int[] colors;
    private int titleBarHeight;

    private int BKG_COLOR_START = 0x00dcee;

    private int BKG_COLOR_END = 0x004a7e;
    
    /** Creates a new instance of Drawer */
    public RoundedDrawer() {
        this.graphicalTheme=new BasicGraphicalTheme();
    }
    public RoundedDrawer(GraphicalTheme graphicalTheme){
        this.graphicalTheme=graphicalTheme;
        this.font=graphicalTheme.getDefaultFont();
    }
    
    
    public void drawBackground(Graphics g, int w, int h, boolean selected) {
        
        //g.setColor(graphicalTheme.getBackgroundColor());
        //g.fillRect(0,0,w,h);
        if (selected) {
            g.setColor(graphicalTheme.getHighlightedBackgroundColor());
            g.fillRoundRect(1,1,w-2,h-2,ARC_WIDTH,ARC_HEIGHT);
            g.setColor(graphicalTheme.getHighlightedBorderColor());
            g.drawRoundRect(1,1,w-3,h-3,ARC_WIDTH,ARC_HEIGHT);
        } else {
            g.setColor(graphicalTheme.getBackgroundColor());
            g.fillRoundRect(1,1,w-2,h-2,ARC_WIDTH,ARC_HEIGHT);
        }
    }
    
    public GraphicalTheme getGraphicalTheme(){
        return graphicalTheme;
    }
    
    public void drawString(String string, Graphics graphics, int x, int y, boolean selected) {
        
        drawString(string, graphics, x, y, Graphics.TOP|Graphics.LEFT,selected);
    }
    public void drawBoldString(String string, Graphics graphics, int x, int y, boolean selected) {
        Font oldfont = graphics.getFont();
        graphics.setFont(getGraphicalTheme().getBoldFont());
        //drawString(string, graphics, x, y, Graphics.TOP|Graphics.LEFT,selected);
        if (selected) {
            graphics.setColor(graphicalTheme.getHighlightedForegroundColor());
        } else {
            graphics.setColor(graphicalTheme.getForegroundColor());
        }
        graphics.drawString(string, x,y,Graphics.TOP|Graphics.LEFT);
        graphics.setFont(oldfont);
    }
    
    
    public void drawString(String string, Graphics graphics, int x, int y, int layout, boolean selected) {
        if (selected) {
            graphics.setColor(graphicalTheme.getHighlightedForegroundColor());
        } else {
            graphics.setColor(graphicalTheme.getForegroundColor());
        }
        graphics.setFont(graphicalTheme.getDefaultFont());
        graphics.drawString(string, x,y,layout);
    }
    
    public void drawCanvasBackground(Graphics g, int w, int h) {
        g.setColor(graphicalTheme.getBackgroundColor());
        g.fillRect(0,0,w,h);
    }
    
    public void drawTitleBackground(Graphics g, int w, int h) {
        /*
        g.setColor(graphicalTheme.getTitleBackgroundColor());
        g.fillRect(0,0,w,h);
        g.setColor(graphicalTheme.getTitleBorderColor());
        g.drawLine(0,h,w,h);
         **/
        
        if (this.titleBarHeight != h) {
            this.titleBarHeight = h;
            colors = getGradient(BKG_COLOR_START, BKG_COLOR_END, h);
        }
        for (int i = 0; i<colors.length; i++) {
            g.setColor(colors[i]);
            g.drawLine(0,i,w,i);
        }
        g.setColor(graphicalTheme.getTitleBorderColor());
        g.drawLine(0,h,w,h);
        
    }
    
    public int[] getGradient(int aStartColor, int aEndColor, int aLength){
        int r1 = aStartColor>>16;
        int g1 = aStartColor>>8;
        g1 = g1 & 0x0000FF;
        int b1 = aStartColor;
        b1 = b1 & 0x0000FF;
        
        int r2 = aEndColor>>16;
        int g2 = aEndColor>>8;
        g2 = g2 & 0x0000FF;
        int b2 = aEndColor;
        b2 = b2 & 0x0000FF;
        
        int res_r = 0;
        int res_g = 0;
        int res_b = 0;
        
        int gradient[] = new int[aLength];
        
        int counter = 0;
        int dif;
        while(counter < aLength){
            dif = (aLength-counter);
            res_r = (r1 * dif + r2*counter)/aLength ;
            res_g = (g1 * dif + g2*counter)/aLength ;
            res_b = (b1 * dif + b2*counter)/aLength ;
            
            res_r = res_r <<16;
            res_g = res_g <<8;
            
            gradient[counter] = (res_r | res_g | res_b);
            
            counter++;
        }
        return gradient;
    }
    
}