protected override bool SetFrame(int l, int t, int r, int b)
{
if (Drawable == null)
{
return(false);
}
float frameWidth = r - l;
float frameHeight = b - t;
var originalImageWidth = (float)Drawable.IntrinsicWidth;
var originalImageHeight = (float)Drawable.IntrinsicHeight;
float usedScaleFactor = 1;
if ((frameWidth > originalImageWidth) || (frameHeight > originalImageHeight))
{
var fitHorizontallyScaleFactor = frameWidth / originalImageWidth;
var fitVerticallyScaleFactor = frameHeight / originalImageHeight;
usedScaleFactor = Math.Max(fitHorizontallyScaleFactor, fitVerticallyScaleFactor);
}
var newImageWidth = originalImageWidth * usedScaleFactor;
var newImageHeight = originalImageHeight * usedScaleFactor;
var matrix = ImageMatrix;
matrix.SetScale(usedScaleFactor, usedScaleFactor, 0, 0); // Replaces the old matrix completly
matrix.PostTranslate((frameWidth - newImageWidth) / 2, frameHeight - newImageHeight);
ImageMatrix.Set(matrix);
return(base.SetFrame(l, t, r, b));
}