我想创建一个不仅具有不透明度的 JWindow,而且我想更改 Swing 中不透明度的默认颜色。
例如,如果我写:
AWTUtilities.setWindowOpacity(this, 0.5f);
这将完全符合我的要求,但有一个例外,颜色是白色。我怎样才能让颜色变成黑色?
我已经尝试了所有setBackground(Color.Black)
关于“this”的内容,等等......
window.getContentPane().setBackground(Color.BLACK);
透明的 JWindow。
public class TransparentWindow{
JWindow window;
public TransparentWindow(){
initializeTransparentWindow();
}
private void initializeTransparentWindow() {
// searching graphical configuration that provide transparent window
GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] devices = env.getScreenDevices();
GraphicsConfiguration translucencyCapableGC = null;
for (int i = 0; i < devices.length && translucencyCapableGC == null; i++) {
GraphicsConfiguration[] configs = devices[i].getConfigurations();
for (int j = 0; j < configs.length && translucencyCapableGC == null; j++) {
if (AWTUtilities.isTranslucencyCapable(configs[j])) {
translucencyCapableGC = configs[j];
}
}
}
if (translucencyCapableGC != null) {
window = new JWindow(translucencyCapableGC) {
@Override
public void paint(Graphics g) {
if (getWidth() > 4 && getHeight() > 4) {
g.clearRect(0, 0, getWidth(), getHeight());
g.setColor(new Color(0x0, 0x0, 0x0, 0xaa));
g.fillRect(0, 0, 1, getHeight());
g.fillRect(0, 0, getWidth(), 1);
g.fillRect(0, getHeight() - 1, getWidth(), 1);
g.fillRect(getWidth() - 1, 0, 1, getHeight());
g.setColor(new Color(0x0, 0x0, 0x0, 0x10));
g.fillRect(1, 1, getWidth() - 1, getHeight() - 1);
}
};
};
AWTUtilities.setWindowOpaque(window, false);
}
else {
window = new JWindow();
AWTUtilities.setWindowOpacity(window, 0.5f);
}
}