public static LGradation getInstance(Color s, Color e, int w, int h, int alpha) {
if (lazyGradation == null) {
lazyGradation = new HashMap<String, LGradation>(10);
}
int hashCode = 1;
hashCode = LSystem.unite(hashCode, s.getRGB());
hashCode = LSystem.unite(hashCode, e.getRGB());
hashCode = LSystem.unite(hashCode, w);
hashCode = LSystem.unite(hashCode, h);
hashCode = LSystem.unite(hashCode, alpha);
String key = String.valueOf(hashCode);
LGradation o = (LGradation) lazyGradation.get(key);
if (o == null) {
lazyGradation.put(key, o = new LGradation(s, e, w, h, alpha));
}
return o;
}
/**
* 创建默认的选择器背景图片
*
* @param w
* @param h
* @return
*/
private LImage createDefaultDialog(int w, int h) {
if (lazyDialog == null) {
lazyDialog = new HashMap<String, LImage>(10);
}
int hash = 1;
hash = LSystem.unite(hash, w);
hash = LSystem.unite(hash, h);
String key = String.valueOf(hash);
LImage o = (LImage) lazyDialog.get(key);
if (o == null) {
o = LImage.createImage(w, h, true);
LGraphics g = o.getLGraphics();
LGradation.getInstance(Color.white, Color.black, w, h).drawHeight(g, 0, 0);
g.setColor(Color.black);
g.drawRect(0, 0, w - 1, h - 1);
g.dispose();
lazyDialog.put(key, o);
}
return o;
}