在Java中更改屏幕分辨率

时间:2012-06-27 11:24:06

标签: java swing screen-resolution sikuli

我有一个使用可视化脚本(sikuli-script)的程序,允许用户创建自己的可视脚本。该程序需要跨多个可能具有不同屏幕分辨率的系统工作。

Sikuli在逐个像素的基础上匹配突出显示的图像,因此在具有不同分辨率的系统上将无法找到图像。

因此有没有办法可以通过java代码更改windows中的分辨率设置?

全屏显示不是一个选项,因为需要捕获的图像来自不同的软件包,即我的软件包位于图像需要来自的上方(并且在捕获时最小化)

1 个答案:

答案 0 :(得分:4)

  

因此有没有办法可以通过java代码更改windows中的分辨率设置?

1.是可能的,为什么不呢

import java.awt.Color;
import java.awt.DisplayMode;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Rectangle;
import java.awt.image.BufferStrategy;

public class MultiBufferTest {

    private Frame mainFrame;
    private static Color[] COLORS = new Color[]{
        Color.red, Color.blue, Color.green, Color.white, Color.black,
        Color.yellow, Color.gray, Color.cyan, Color.pink, Color.lightGray,
        Color.magenta, Color.orange, Color.darkGray};
    private static DisplayMode[] BEST_DISPLAY_MODES = new DisplayMode[]{
        new DisplayMode(640, 480, 32, 0),
        new DisplayMode(640, 480, 16, 0),
        new DisplayMode(640, 480, 8, 0)};

    public MultiBufferTest(int numBuffers, GraphicsDevice device) {
        try {
            GraphicsConfiguration gc = device.getDefaultConfiguration();
            mainFrame = new Frame(gc);
            mainFrame.setUndecorated(true);
            mainFrame.setIgnoreRepaint(true);
            device.setFullScreenWindow(mainFrame);
            if (device.isDisplayChangeSupported()) {
                chooseBestDisplayMode(device);
            }
            Rectangle bounds = mainFrame.getBounds();
            mainFrame.createBufferStrategy(numBuffers);
            BufferStrategy bufferStrategy = mainFrame.getBufferStrategy();
            for (float lag = 2000.0f; lag > 0.00000006f; lag = lag / 1.33f) {
                for (int i = 0; i < numBuffers; i++) {
                    Graphics g = bufferStrategy.getDrawGraphics();
                    if (!bufferStrategy.contentsLost()) {
                        g.setColor(COLORS[i]);
                        g.fillRect(0, 0, bounds.width, bounds.height);
                        bufferStrategy.show();
                        g.dispose();
                    }
                    try {
                        Thread.sleep((int) lag);
                    } catch (InterruptedException e) {
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            device.setFullScreenWindow(null);
        }
    }

    private static DisplayMode getBestDisplayMode(GraphicsDevice device) {
        for (int x = 0; x < BEST_DISPLAY_MODES.length; x++) {
            DisplayMode[] modes = device.getDisplayModes();
            for (int i = 0; i < modes.length; i++) {
                if (modes[i].getWidth() == BEST_DISPLAY_MODES[x].getWidth()
                        && modes[i].getHeight() == BEST_DISPLAY_MODES[x].getHeight()
                        && modes[i].getBitDepth() == BEST_DISPLAY_MODES[x].getBitDepth()) {
                    return BEST_DISPLAY_MODES[x];
                }
            }
        }
        return null;
    }

    public static void chooseBestDisplayMode(GraphicsDevice device) {
        DisplayMode best = getBestDisplayMode(device);
        if (best != null) {
            device.setDisplayMode(best);
        }
    }

    public static void main(String[] args) {
        try {
            int numBuffers = 2;
            if (args != null && args.length > 0) {
                numBuffers = Integer.parseInt(args[0]);
                if (numBuffers < 2 || numBuffers > COLORS.length) {
                    System.err.println("Must specify between 2 and " + COLORS.length + " buffers");
                    System.exit(1);
                }
            }
            GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
            GraphicsDevice device = env.getDefaultScreenDevice();
            MultiBufferTest test = new MultiBufferTest(numBuffers, device);
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.exit(0);
    }
}

2.不要这样做,可能会让用户烦恼,而且代码缺乏可以改变Native OS中的分辨率(我的同事在三个屏幕上有超过100次切换,任何更改分辨率以更改镜头{{1 }和size,结果很简单)

3.使用location JLabel(使用适当的Icons放入容器中),或将LayoutManager放入IconsJList那么你永远不会/不关心什么

4.仅使用JTable而不是为屏幕分辨率设置或更改,您可以在屏幕上为LayoutManager设置较小的Size(对于JFrame),让我们用户在她/他的屏幕上决定最终Apps start_up