/*
 * aNNiMON 2010
 * For more info visit http://annimon.com/
 */

/*
 * На основе класса MultiLineText от А.С. Ледкова
 * www.mobilab.ru
 */
import com.annimon.XID;
import com.annimon.ui.ESkin;
import com.annimon.ui.EWindow;
import java.util.Vector;
import javax.microedition.lcdui.*;

public class About extends EWindow {

    private static final String PATH = "/about";
    private Font def;
    private int defHeight;
    private String str; // текст

    private int mh, y0;     // Положение верхнего края текста
    private int dy;         // Шаг при прокрутке текста
    private int textheight; // Общая высота текста
    private Vector strLines;

    public About(String about) {
        super(about);
        str = new XID().loadText(PATH);
        def = Font.getDefaultFont();
        dy = defHeight = def.getHeight()+2;
        mh = super.hh - 1;
        SetTextPar();
    }

    public void paint(Graphics g, int w, int h) {
        g.setFont(def);
        g.setColor(ESkin.textColor);
        int y1 = y0;
        for (int i = 0; i < strLines.size(); i++) {
            if ((y1 + defHeight) > 0) {
                g.drawString(strLines.elementAt(i).toString(), 1, 3 + y1, Graphics.LEFT | Graphics.TOP);
            }
            y1 += defHeight;
            if (y1 > mh) break;
        }
    }

    public void keyEvent(int key, byte state) {
        if(state!=RELEASED) {
            int ga = getGameAction(key);
            if(ga==UP) MoveUp();
            else if(ga==DOWN) MoveDown();
            else if(ga==LEFT) PageUp();
            else if(ga==RIGHT) PageDown();
            else if(ga==FIRE || key==KEY_LSK || key==KEY_RSK)
                Main.midlet.dsp.setCurrent(Main.midlet.main);
            redraw();
        }
    }

    protected void pointerPressed(int x, int y) {
        int w3 = w/3;
        int h3 = h/3;
        if(y<h3 && (x>w3 && x<(w-w3))) keyPressed(UP);
        else if(y>(h-h3) && (x>w3 && x<(w-w3))) keyPressed(DOWN);

        if(x<w3 && (y>h3 && y<(h-h3))) keyPressed(LEFT);
        else if(x>(w-w3) && (y>h3 && y<(h-h3))) keyPressed(RIGHT);

        else if(x<w3 && y>(h-h3)) keyPressed(-6);
        else if(x>(w-w3) && y>(h-h3)) keyPressed(-7);
        else if( (x>w3 && x<(w-w3)) && (y>h3 && y<(h-h3)) ) keyPressed(FIRE);
    }

    private void SetTextPar() {
        //Разбиваем строку на массив строк
        strLines = null;
        strLines = new Vector();
        String[] arr = splitString(str, "\n");
        for(int i=0; i<arr.length; i++) {
            String substr = arr[i];
            int i0 = 0, space = 0, in = 0, j = 0, jw = 0;   //Смещение от начала строки
            int imax = substr.length();   //Длина строки
            boolean isexit = true;
            y0 = 0;
            while (isexit) {
                space = substr.indexOf(" ", i0 + 1);
                if (space <= i0) {
                    space = imax;
                    isexit = false;
                }

                j = def.stringWidth(substr.substring(i0, space));
                if (jw + j < w) {//Слово умещается
                    jw = jw + j;
                    i0 = space;
                } else {//Слово не умещается
                    strLines.addElement(substr.substring(in, i0));
                    in = i0 + 1;
                    jw = j;
                    if (j > w) {//Слово полностью не умещается в строке
                        space = i0;
                        while (jw > w) {
                            j = 0;
                            while (j < w) {
                                space++;
                                j = def.stringWidth(substr.substring(in, space));
                            }
                            space = space - 1;
                            j = def.stringWidth(substr.substring(in, space));
                            strLines.addElement(substr.substring(in, space));
                            jw = jw - j;
                            i0 = space;
                            in = space;
                        }
                        jw = 0;
                    } else {
                        i0 = space;
                    }
                }
            }
            strLines.addElement(substr.substring(in, imax));
        }
        textheight = strLines.size() * defHeight;
    }

    private void MoveDown() {
        if (textheight > mh) {
            y0 = y0 - dy;
            if (mh - y0 > textheight) {
                y0 = mh - textheight;
            }
        }
    }

    private void MoveUp() {
        if (textheight > mh) {
            y0 = y0 + dy;
            if (y0 > 0) {
                y0 = 0;
            }
        }

    }

    private void PageUp() {
        if (textheight > mh) {
            y0 = y0 + mh;
            if (y0 > 0) {
                y0 = 0;
            }
        }

    }

    private void PageDown() {
        if (textheight > mh) {
            y0 = y0 - mh;
            if (mh - y0 > textheight) {
                y0 = mh - textheight;
            }
        }
    }

    private String[] splitString(String str, String delim) {
        if ("".equals(str) || delim == null || delim.length() == 0) return new String[]{str};

        Vector v = new Vector();
        int pos = 0;
        int newpos = str.indexOf(delim, 0);

        while (newpos != -1) {
            v.addElement(str.substring(pos, newpos));
            pos = newpos + delim.length();
            newpos = str.indexOf(delim, pos);
        }
        v.addElement(str.substring(pos));

        String[] s = new String[v.size()];
        v.copyInto(s);
        return s;
    }
    
}