AnalyzerSurface.java 文件源码

/**
 * SurfaceHolder.Callback function. This is called every time the dimension changes
 * (and after the SurfaceView is created).
 *
 * @param holder    reference to the surface holder
 * @param format
 * @param width     current width of the surface view
 * @param height    current height of the surface view
 */
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
    if(this.width != width || this.height != height) {
        this.width = width;
        this.height = height;

        // Recreate the shaders:
        this.fftPaint.setShader(new LinearGradient(0, 0, 0, getFftHeight(), Color.WHITE, Color.parseColor(fftColor), Shader.TileMode.MIRROR));

        // Recreate the waterfall bitmaps:
        this.createWaterfallLineBitmaps();

        // Fix the text size of the text paint objects:
        this.setFontSize(fontSize);
    }
}