package code.kalter.longflight;

import java.io.IOException;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

/**
 * Костыль - и этим всё сказанно
 *
 * @author KalterFive
 */
public class Font {

    private static Font instance;

    public static Font getInstance() throws IOException {
        if (instance == null) {
            instance = new Font();
        }
        return instance;
    }

    private final Image[] ascii;

    private Font() throws IOException {
        Image font = Loader.getInstance().getImage("/gfx/font.png");
        ascii = new Image[0x7F];
        int x = 0;
        for (int i = 0x41; i <= 0x5A; i++, x += 5) {
            ascii[i] = Image.createImage(font, x, 0, 5, 9, 0);
        }
        for (int i = 0x61; i <= 0x7A; i++, x += 5) {
            ascii[i] = Image.createImage(font, x, 0, 5, 9, 0);
        }
        for (int i = 0x30; i <= 0x39; i++, x += 5) {
            ascii[i] = Image.createImage(font, x, 0, 5, 9, 0);
        }
        ascii[0x21] = Image.createImage(font, x, 0, 5, 9, 0);
        ascii[0x22] = Image.createImage(font, x += 5, 0, 5, 9, 0);
        ascii[0x27] = Image.createImage(font, x += 5, 0, 5, 9, 0);
        ascii[0x2C] = Image.createImage(font, x += 5, 0, 5, 9, 0);
        ascii[0x2D] = Image.createImage(font, x += 5, 0, 5, 9, 0);
        ascii[0x2E] = Image.createImage(font, x += 5, 0, 5, 9, 0);
        ascii[0x3A] = Image.createImage(font, x += 5, 0, 5, 9, 0);
        ascii[0x28] = Image.createImage(font, x += 5, 0, 5, 9, 0);
        ascii[0x29] = Image.createImage(font, x += 5, 0, 4, 9, 0);
    }

    public int getWidth(String text) {
        return text.length() * 6;
    }

    public void paint(Graphics graphics, String text, int x, int y) {
        for (int i = 0, px = x; i < text.length(); i++) {
            final char c = text.charAt(i);
            switch (c) {
                case '\r':
                    x = px;
                    break;

                case '\n':
                    y += 10;
                    break;

                case ' ':
                    x += 6;
                    break;

                default:
                    graphics.drawImage(ascii[c], x, y, 0);
                    x += 6;
                    break;
            }
        }
    }

    public void paint(Graphics graphics, String text,
            int x, int y, int width) {
        String[] word = split(text);
        int px = x;
        for (int i = 0; i < word.length; i++) {
            paint(graphics, word[i], px, y);
            int length = (getWidth(word[i])) + 6;
            if ((px += length) + length > width) {
                px = x;
                y += 10;
            }
        }
    }

    public int getHeight(String text, int width) {
        String[] word = split(text);
        int result = 0;
        for (int i = 0, x = 0; i < word.length; i++) {
            int length = (getWidth(word[i])) + 6;
            if ((x += length) + length > width) {
                x = 0;
                result += 10;
            }
        }
        return result;
    }

    private String[] split(String text) {
        String[] result;
        int length = 1;
        for (int i = 0; i < text.length(); i++) {
            if (text.charAt(i) == ' ') {
                length++;
            }
        }
        result = new String[length];
        StringBuffer word = new StringBuffer();
        int j = 0;
        for (int i = 0; i < text.length(); i++) {
            char c = text.charAt(i);
            if (c == ' ') {
                result[j++] = word.toString();
                word = new StringBuffer();
            } else {
                word.append(c);
            }
        }
        result[j] = word.toString();
        return result;
    }
}