我想用 Painter 创建一组按钮。我写了下一个代码
class ListButton extends Button{
int id;
ListButton(int id, final Image unsel, final Image sel, final Image pres) {
this.id = id;
getUnselectedStyle().setBgTransparency(255);
getSelectedStyle().setBgTransparency(255);
getPressedStyle().setBgTransparency(255);
getUnselectedStyle().setAlignment(Component.LEFT);
getSelectedStyle().setAlignment(Component.LEFT);
getPressedStyle().setAlignment(Component.LEFT);
getUnselectedStyle().setBgPainter(new Painter(){
public void paint(Graphics graphics, Rectangle rectangle) {
graphics.drawImage(buttonBgImage, 0, 0);
int w= rectangle.getSize().getWidth();
int h= rectangle.getSize().getHeight();
graphics.drawImage(unsel, w- unsel.getWidth()-10, (h- unsel.getHeight())/2+ 3);
}
});
getSelectedStyle().setBgPainter(new Painter(){
public void paint(Graphics graphics, Rectangle rectangle) {
graphics.drawImage(buttonBgImage, 0, 0);
int w= rectangle.getSize().getWidth();
int h= rectangle.getSize().getHeight();
graphics.drawImage(sel, w- sel.getWidth()-10, (h- sel.getHeight())/2+ 3);
}
});
getPressedStyle().setBgPainter(new Painter(){
public void paint(Graphics graphics, Rectangle rectangle) {
graphics.drawImage(buttonBgImage, 0, 0);
int w= rectangle.getSize().getWidth();
int h= rectangle.getSize().getHeight();
graphics.drawImage(pres, w- pres.getWidth()-10, (h- pres.getHeight())/2+ 3);
}
});
}
}
如果我在表单中插入 2 个按钮，则只会显示第一个按钮。第二个按钮没有背景图像（buttonBgImage）并且没有图标（sel、unsel 或 pres）。我随机发现如果将第二个按钮插入某个容器中，它将被绘制。什么奇怪的行为？对不起我的英语不好。