MusicPlayerView.java 文件源码

/**
 * Create shader and set shader to mPaintCover
 */
private void createShader() {

    if (mWidth == 0)
        return;

    //if mBitmapCover is null then create default colored cover
    if (mBitmapCover == null) {
        mBitmapCover = Bitmap.createBitmap(mWidth, mHeight, Bitmap.Config.ARGB_8888);
        mBitmapCover.eraseColor(mCoverColor);
    }

    mCoverScale = ((float) mWidth) / (float) mBitmapCover.getWidth();

    mBitmapCover = Bitmap.createScaledBitmap(mBitmapCover,
            (int) (mBitmapCover.getWidth() * mCoverScale),
            (int) (mBitmapCover.getHeight() * mCoverScale),
            true);

    mShader = new BitmapShader(mBitmapCover, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
    mPaintCover = new Paint();
    mPaintCover.setAntiAlias(true);
    mPaintCover.setShader(mShader);

}