我的JFrame总是变成几个像素太大了。 [英] My JFrame always becomes a few pixels too big.
问题描述
我正在用Java编写这个游戏,我只是将所有与窗口相关的代码重写为基于java.awt到javax.swing。不久之后,我意识到事情现在有点复杂,所以我做了一些研究,并找到了如何绘制东西,如何设置JFrame的大小等等。但由于某种原因,我的JFrame的大小总是超出我指定的尺寸10个像素。在这种情况下,我希望它是640 x 640像素。
I am working on this game in Java, and I just rewrote all my window related code from being based on java.awt to javax.swing. Soon after, I realized that things were a bit more complicated now, and so i did some research and and found out how to draw things, how to set the size of a JFrame, etc. But for some reason, the size of my JFrame always goes 10 pixels beyond the size I've specified it to become. In this case, I wanted it to be 640 by 640 pixels.
这是我的代码:
package chrononaut;
import java.awt.*;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.*;
@SuppressWarnings("serial")
public class GameJFrame extends JFrame
{
//Background color:
static Color bgrCol = new Color(12, 4, 64);
//Size:
final static int size = 640;
//The component that does the actual drawing:
static GameJComp drawingComp = new GameJComp();
//Constructor:
public GameJFrame()
{
//Calling super() and setting the title:
super("Chrononaut");
//Setting icon image:
try
{
Image icon = ImageIO.read(getClass().getResource("/icon/icon 1.png"));
setIconImage(icon);
}
catch (IOException e) {}
//make it closable:
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Setting the size:
Container c = getContentPane();
Dimension d = new Dimension(size, size); //for some reason, it goes 10 pixels beyond the given values
c.setPreferredSize(d);
pack();
//Adding the drawing component to the content pane:
getContentPane().add(drawingComp);
//Making sure the window size stays constant:
setResizable(false);
//Centering position:
Toolkit tk = Toolkit.getDefaultToolkit();
Dimension s = tk.getScreenSize();
setLocation(s.width/2-getWidth()/2, s.height/2-getHeight()/2);
//Background color:
setBackground(bgrCol);
//Make it visible:
setVisible(true);
}
public void drawAll()
{
drawingComp.drawAll();
}
public void closeGame()
{
dispose();
System.exit(0);
}
}
当我运行它时,空间即使我调用setPreferredSize(d),JFrame边框内的大小也只有650像素,而不是640。
我试过制作Dimension d = new Dimension(size - 10,size - 10);这似乎有效,但我不知道它会在其他平台上的天气。
我没有在网络上的任何其他地方看到这个问题,所以我完全不知道为什么会这样做。 :(
When I run it, the space inside the borders of the JFrame appears to have a size of 650 pixels, not 640, even when I call setPreferredSize(d). I tried making Dimension d = new Dimension(size - 10, size - 10); which does seem to work, but I have no idea of weather it would on other platforms. I haven't seen this problem anywhere else on the web, so I have absolutely no idea of why it does this. :(
推荐答案
这是与使用 setResizable(false); $ c $相关的问题c>在您尝试设置窗口大小之后。
This is an issue related to using setResizable(false);
AFTER you've tried setting the size of the window.
问题是(至少在Windows上),可调整大小的帧边框大小不同和不可调整大小的窗口。
The problem is that (on Windows at least), the size of the frames border is different between resizable and non-resizable windows.
在调用 pack $ c $之前调用
setResizable
c>
Call setResizable
before calling pack
如果您想要一种更好(通常更可靠)的方式来集中窗口,请考虑使用
If you want a better (and generally more reliable) way to center your window, consider using
setLocationRelativeTo(null);
而不是
setLocation(s.width/2-getWidth()/2, s.height/2-getHeight()/2);
Toolkit.getScreenSize
未考虑空间被任务栏占用......
Toolkit.getScreenSize
doesn't take into consideration the space taken up by the task bar...
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