ObliqueView.java 文件源码

private void setupBitmap(ImageView imageView, float width, float height) {
    Drawable drawable = imageView.getDrawable();
    if (drawable == null) {
        return;
    }
    try {
        bitmap = (drawable instanceof BitmapDrawable) ?
                ((BitmapDrawable) drawable).getBitmap() :
                Bitmap.createBitmap(drawable.getIntrinsicWidth(),
                        drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
    } catch (Exception e) {
        e.printStackTrace();
    }
    if (bitmap == null) {
        imageView.invalidate();
        return;
    }
    paint = new Paint(ANTI_ALIAS_FLAG);
    bitmapShader = new BitmapShader(bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
    paint.setShader(bitmapShader);
    if (imageView.getScaleType() != ImageView.ScaleType.CENTER_CROP && imageView.getScaleType() != ImageView.ScaleType.FIT_XY) {
        imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
    }
    bitmapShader.setLocalMatrix(setUpScaleType(bitmap, imageView, width, height));
    imageView.invalidate();
}