12.3、Libgdx的图像之截屏

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接下来的示例说明怎样进行截屏并且保存为PNG格式。

public class ScreenshotFactory {private static int counter = 1;public static void saveScreenshot(){    try{        FileHandle fh;        do{            fh = new FileHandle("screenshot" + counter++ + ".png");        }while (fh.exists());        Pixmap pixmap = getScreenshot(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), false);        PixmapIO.writePNG(fh, pixmap);        pixmap.dispose();    }catch (Exception e){               }}private static Pixmap getScreenshot(int x, int y, int w, int h, boolean yDown){    final Pixmap pixmap = ScreenUtils.getFrameBufferPixmap(x, y, w, h);    if (yDown) {        ByteBuffer pixels = pixmap.getPixels();        int numBytes = w * h * 4;        byte[] lines = new byte[numBytes];        int numBytesPerLine = w * 4;        for (int i = 0; i < h; i++) {            pixels.position((h - i - 1) * numBytesPerLine);            pixels.get(lines, i * numBytesPerLine, numBytesPerLine);        }        pixels.clear();        pixels.put(lines);    }    return pixmap;}}

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