public static Surface CreateThumbnail(Surface sourceSurface, PdnGraphicsPath maskPath, Rectangle bounds, int thumbSideLength)
{
Size thumbSize = Utility.ComputeThumbnailSize(bounds.Size, thumbSideLength);
Surface thumb = new Surface(Math.Max(5, thumbSize.Width + 4), Math.Max(5, thumbSize.Height + 4));
thumb.Clear(ColorBgra.Transparent);
thumb.Clear(new Rectangle(1, 1, thumb.Width - 2, thumb.Height - 2), ColorBgra.Black);
Rectangle insetRect = new Rectangle(2, 2, thumb.Width - 4, thumb.Height - 4);
Surface thumbInset = thumb.CreateWindow(insetRect);
thumbInset.Clear(ColorBgra.Transparent);
float scaleX = (float)thumbInset.Width / (float)bounds.Width;
float scaleY = (float)thumbInset.Height / (float)bounds.Height;
Matrix scaleMatrix = new Matrix();
scaleMatrix.Translate(-bounds.X, -bounds.Y, System.Drawing.Drawing2D.MatrixOrder.Append);
scaleMatrix.Scale(scaleX, scaleY, System.Drawing.Drawing2D.MatrixOrder.Append);
thumbInset.SuperSamplingFitSurface(sourceSurface);
Surface maskInset = new Surface(thumbInset.Size);
maskInset.Clear(ColorBgra.Black);
using (RenderArgs maskInsetRA = new RenderArgs(maskInset))
{
maskInsetRA.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
maskInsetRA.Graphics.Transform = scaleMatrix;
maskInsetRA.Graphics.FillPath(Brushes.White, maskPath);
maskInsetRA.Graphics.DrawPath(Pens.White, maskPath);
}
scaleMatrix.Dispose();
scaleMatrix = null;
IntensityMaskOp maskOp = new IntensityMaskOp();
maskOp.Apply(maskInset, thumbInset, maskInset);
UserBlendOps.NormalBlendOp normalOp = new UserBlendOps.NormalBlendOp();
thumbInset.ClearWithCheckboardPattern();
normalOp.Apply(thumbInset, thumbInset, maskInset);
maskInset.Dispose();
maskInset = null;
thumbInset.Dispose();
thumbInset = null;
using (RenderArgs thumbRA = new RenderArgs(thumb))
{
Utility.DrawDropShadow1px(thumbRA.Graphics, thumb.Bounds);
}
return(thumb);
}
public static Surface CreateThumbnail(Surface sourceSurface, PdnGraphicsPath maskPath, Rectangle bounds, int thumbSideLength)
{
Size thumbSize = Utility.ComputeThumbnailSize(bounds.Size, thumbSideLength);
Surface thumb = new Surface(Math.Max(5, thumbSize.Width + 4), Math.Max(5, thumbSize.Height + 4));
thumb.Clear(ColorBgra.Transparent);
thumb.Clear(new Rectangle(1, 1, thumb.Width - 2, thumb.Height - 2), ColorBgra.Black);
Rectangle insetRect = new Rectangle(2, 2, thumb.Width - 4, thumb.Height - 4);
Surface thumbInset = thumb.CreateWindow(insetRect);
thumbInset.Clear(ColorBgra.Transparent);
float scaleX = (float)thumbInset.Width / (float)bounds.Width;
float scaleY = (float)thumbInset.Height / (float)bounds.Height;
Matrix scaleMatrix = new Matrix();
scaleMatrix.Translate(-bounds.X, -bounds.Y, System.Drawing.Drawing2D.MatrixOrder.Append);
scaleMatrix.Scale(scaleX, scaleY, System.Drawing.Drawing2D.MatrixOrder.Append);
thumbInset.SuperSamplingFitSurface(sourceSurface);
Surface maskInset = new Surface(thumbInset.Size);
maskInset.Clear(ColorBgra.Black);
using (RenderArgs maskInsetRA = new RenderArgs(maskInset))
{
maskInsetRA.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
maskInsetRA.Graphics.Transform = scaleMatrix;
maskInsetRA.Graphics.FillPath(Brushes.White, maskPath);
maskInsetRA.Graphics.DrawPath(Pens.White, maskPath);
}
scaleMatrix.Dispose();
scaleMatrix = null;
IntensityMaskOp maskOp = new IntensityMaskOp();
maskOp.Apply(maskInset, thumbInset, maskInset);
UserBlendOps.NormalBlendOp normalOp = new UserBlendOps.NormalBlendOp();
thumbInset.ClearWithCheckboardPattern();
normalOp.Apply(thumbInset, thumbInset, maskInset);
maskInset.Dispose();
maskInset = null;
thumbInset.Dispose();
thumbInset = null;
using (RenderArgs thumbRA = new RenderArgs(thumb))
{
Utility.DrawDropShadow1px(thumbRA.Graphics, thumb.Bounds);
}
return thumb;
}
