对于我正在处理的某个 GUI 项目,我有一个 JFrame,其中包含一个带有选项卡等的窗格。对于每个选项卡,它都有不同的大小,所以我想将窗口调整为该大小,但我不想通过调用 setSize 来捕捉到该大小,我希望它更平滑地滑动到该大小。我通过以下基本代码实现了这一点:
private class Resizer implements Runnable {
private int nw, nh, runs, sizex, sizey;
private float width, height, wpms, hpms, decay = 0.994f;
private Future future;
public Resizer(int newwidth, int newheight){
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
sizex = d.width;
sizey = d.height;
width = frame.getWidth();
height = frame.getHeight();
wpms = (float)(newwidth - frame.getWidth()) / 1000;
wpms *= 6;
hpms = (float)(newheight - frame.getHeight()) / 1000;
hpms *= 6;
nw = newwidth;
nh = newheight;
runs = 0;
}
public void run(){
runs++;
if (runs == 1000){
frame.setSize(nw, nh);
future.cancel(true);
canResize = true;
return;
}
width += wpms;
wpms *= decay;
height += hpms;
hpms *= decay;
if (height + frame.getY() > sizey)
frame.setLocation(frame.getX(), frame.getY() - (int)(frame.getY() + height - sizey));
frame.setSize((int) width, (int) height);
frame.repaint();
}
public void setFuture(Future f){
future = f;
}
}
public boolean resizeTo(int width, int height){
if (canResize){
canResize = false;
Resizer r = new Resizer(width, height);
r.setFuture(timer.scheduleAtFixedRate(r, 0, 2, TimeUnit.MILLISECONDS));
return true;
}
return false;
}
但显然有一个问题存在内存泄漏(调整几次后它从 20k 变为 150k),我发现这是在调整大小时使用 setSize 很多次。
有没有办法修复泄漏或其他调整大小的方法?