ListTalkBalloon.java

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package com.substanceofcode.twitter.views;

import com.substanceofcode.utils.StringUtil;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;

/**
 *
 * @author Tommi Laukkanen
 */
public class ListTalkBalloon implements TalkBalloon {

    public static final Font textFont = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN, Font.SIZE_SMALL);
    public static final Font nameFont = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_BOLD, Font.SIZE_SMALL);
    public int screenWidth;
    public int screenHeight;
    private static final int BORDER_COLOR = 0x888888;
    private static final int BORDER_SHADOW_COLOR = 0xBBBBBB;
    private int fontHeight;
    private int textWidth;

    /** Create new instanc of TalkBalloon. */
    public ListTalkBalloon(int screenWidth, int screenHeight) {
        this.fontHeight = textFont.getHeight();
        setSize(screenWidth, screenHeight);
    }

    public Font getFont() {
        return textFont;
    }

    public int draw(Graphics g, String text, String talkerText, int y) {
        String[] originalText = { text };
        String[] textLines = StringUtil.formatMessage(originalText, screenWidth-textFont.getHeight(), textFont);
        return draw(g, textLines, talkerText, y, false);
    }

    public int draw(Graphics g, String text, String talkerText, int y, boolean isSelected) {
        String[] originalText = { text };
        String[] textLines = StringUtil.formatMessage(originalText, screenWidth-textFont.getHeight(), textFont);
        return draw(g, textLines, talkerText, y, isSelected);
    }

    /**
     * Draw talk balloon in given coordinates and in given size.
     * @param g             Graphics.
     * @param text          Text inside balloon.
     * @param talkerText    Text below balloon.
     * @param y             Y coordinate of balloon.
     */
    public int draw(Graphics g, String[] textLines, String talkerText, int y, boolean isSelected) {

        // Calculate text dimensions
        int textHeight = (textLines.length) * fontHeight + fontHeight;

        // Draw the main balloon box
        if(!isSelected) {
            g.setColor( 0xffffff );
        } else {
            g.setColor( Theme.COLOR_SELECTED_BG );
        }
        int x = 0;
        g.fillRect(x, y, this.screenWidth, (textLines.length)*fontHeight + fontHeight*2 + 1);

        // Line
        g.setColor(BORDER_COLOR);
        g.drawLine(x, y, screenWidth, y);
        g.setColor(BORDER_SHADOW_COLOR);
        g.drawLine(x, y+1, screenWidth, y+1);


        // Draw text inside balloon
        g.setColor( Theme.COLOR_TEXT );
        g.setFont(textFont);
        int textRow = y + fontHeight + fontHeight/2;
        for(int line=0; line<textLines.length; line++) {
            g.drawString(textLines[line], x+fontHeight/2, textRow, Graphics.LEFT|Graphics.BOTTOM);
            textRow += fontHeight;
        }

        // Draw talker text
        g.setColor( Theme.COLOR_USER_TEXT );
        g.setFont( nameFont );
        int nameWidth = nameFont.stringWidth(talkerText);
        g.drawString(talkerText, screenWidth - fontHeight/2 - nameWidth, textRow, Graphics.LEFT|Graphics.BOTTOM);

        return (int)((textLines.length)*fontHeight + fontHeight*2);
    }

    public void setSize(int width, int height) {
        this.screenWidth = width;
        this.screenHeight = height;
        this.textWidth = screenWidth-fontHeight*3;
    }

}