Numbergame

//package com.j2medev.numbergame; import javax.microedition.lcdui.*; //import com.nokia.mid.ui.*; //A root class for Canvas-based components. //Because Area extends Canvas, you can actually //use a component directly as a Canvas, although //it's recommended you place it on Manager. public abstract class Area extends Canvas { protected int x; protected int y; protected int w; protected int h; protected Font font; protected Manager parent; protected int backcolor = -1; protected int forecolor = -1; protected Area(int x, int y, int w, int h) { this(x, y, w, h, null); } protected Area(int x, int y, int w, int h, Font f) { this.x = x; this.y = y; this.w = w; this.h = h; this.font = f; } // Erase the background using backcolor protected void eraseBackground(Graphics g) { g.setColor(getBackColor()); if (parent == null) { g.fillRect(0, 0, getCanvasWidth(), getCanvasHeight()); } else { g.fillRect(0, 0, w, h); } } public final int getBackColor() { if (backcolor == -1) { if (parent != null) { return parent.getBackColor(); } backcolor = 0xFFFFFF; } return backcolor; } protected final int getCanvasHeight() { return super.getHeight(); } protected final int getCanvasWidth() { return super.getWidth(); } public final int getHeight() { return h; } public final int getWidth() { return w; } public final int getX() { return x; } public final int getY() { return y; } public final Font getFont() { if (font == null) { if (parent != null) { return parent.getFont(); } font = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN, Font.SIZE_SMALL); ; } return font; } public final int getForeColor() { if (forecolor == -1) { if (parent != null) { return parent.getForeColor(); } forecolor = 0; } return forecolor; } public Manager getParent() { return parent; } public void keyPressed(int keyCode) { } public void keyReleased(int keyCode) { } public void keyRepeated(int keyCode) { } protected void moveFocus(boolean forward) { if (parent != null) { parent.moveFocus(forward); } } // If the area is acting like a Canvas, call // the real paint routine protected void paint(Graphics g) { eraseBackground(g); g.setColor(getForeColor()); g.setFont(getFont()); paintArea(g, true); } // The manager calls this paint routine on each of // its children public final void paint(Graphics g, boolean hasFocus) { int cx = g.getClipX(); int cy = g.getClipY(); int ch = g.getClipHeight(); int cw = g.getClipWidth(); Font f = g.getFont(); int col = g.getColor(); eraseBackground(g); g.setClip(x, y, w, h); g.setFont(getFont()); g.setColor(getForeColor()); paintArea(g, hasFocus); g.setClip(cx, cy, cw, ch); g.setFont(f); g.setColor(col); } // Subclass implements to do actual painting protected abstract void paintArea(Graphics g, boolean hasFocus); // Repaint the area of the given child public void repaintArea(Area child, boolean now) { if (parent != null) { parent.repaintArea(child, now); } else { repaint(child.getX(), child.getY(), child.getWidth(), child .getHeight()); if (now) { serviceRepaints(); } } } public void setBackColor(int col) { backcolor = col; } public void setForeColor(int col) { forecolor = col; } protected void setParent(Manager parent) { this.parent = parent; } }