internal static Bitmap GetDragImageHint(
ContentAlignment textAlignment,
Bitmap hintImage,
RectangleF textRectangle,
int hintImageWidth)
{
int width = hintImage.Width;
if (width > hintImageWidth)
{
width = hintImageWidth;
int x = (hintImage.Width - hintImageWidth) / 2;
Point location = Point.Empty;
switch (textAlignment)
{
case ContentAlignment.TopCenter:
case ContentAlignment.MiddleCenter:
case ContentAlignment.BottomCenter:
location = new Point(x, 0);
break;
case ContentAlignment.TopRight:
case ContentAlignment.MiddleRight:
case ContentAlignment.BottomRight:
location = Point.Truncate(textRectangle.Location);
break;
}
Rectangle cropRectangle = new Rectangle(location, new Size(width, hintImage.Height));
hintImage = ImageHelper.Crop(hintImage, cropRectangle);
}
ImageHelper.ApplyMask(hintImage, (Brush) new LinearGradientBrush(new Rectangle(0, 0, width, hintImage.Height), Color.White, Color.Black, LinearGradientMode.Horizontal));
return(hintImage);
}
protected override Image GetDragHintCore()
{
Bitmap bitmap = base.GetDragHintCore() as Bitmap;
int width = bitmap.Width;
if (width > 150)
{
width = 150;
bitmap = ImageHelper.Crop(bitmap, new Rectangle(Point.Empty, new Size(width, bitmap.Height)));
}
ImageHelper.ApplyMask(bitmap, (Brush) new LinearGradientBrush(new Rectangle(0, 0, width, bitmap.Height), Color.White, Color.Black, LinearGradientMode.Horizontal));
return((Image)bitmap);
}