艾，不想解釋了。貼代碼算了
java 代碼
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- package org.pook.ui;
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- import javax.microedition.lcdui.Graphics;
- import javax.microedition.lcdui.Image;
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- import org.pook.ui.core.Platform;
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- public class Choice extends Part {
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- private boolean select;
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- private Image[] imageElements;
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- public Choice(String label,
- Image[] imageElements, boolean select) {
- super(0, 0, 0, 0);
- if(label == null)
- label = "";
- this.label = label;
- this.select = select;
- this.imageElements = imageElements;
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- }
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- public void paint(Graphics g) {
- paintChoiceImpl(g);
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- }
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- private void paintChoiceImpl(Graphics g) {
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- paintChoice(g);
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- }
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- private void paintChoice(Graphics g) {
- g.drawImage(select?imageElements[0]:imageElements[1],view[X], view[Y],
- Graphics.TOP|Graphics.LEFT);
- paintLabel(g);
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- }
- private void paintLabel(Graphics g) {
- if(label.equals(""))
- return;
- g.setColor(fontColor);
- g.drawString(label,view[X] + imageElements[0].getWidth() + 4, view[Y]-2, Graphics.TOP | Graphics.LEFT);
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- if(hasFocus)
- paintSelect(g);
- }
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- private void paintSelect(Graphics g) {
- g.drawRect(view[X] - 1, view[Y] - 1,
- imageElements[0].getWidth() + 1,
- imageElements[0].getHeight() + 1);
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- }
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- public void onClick(int keyCode) {
- if(keyCode == Platform.KEY_ENTER
- && hasFocus)
- select = !select;
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- }
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- public boolean isSelect() {
- return select;
- }
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- public void setSelect(boolean select) {
- this.select = select;
- }
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- }
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