|
public MakeLevelsAuto ( ) : |
||
| return | ||
public override void RenderEffect(ImageSurface src, ImageSurface dest, Gdk.Rectangle[] rois)
{
HistogramRgb histogram = new HistogramRgb ();
histogram.UpdateHistogram (src, new Gdk.Rectangle (0, 0, src.Width, src.Height));
op = histogram.MakeLevelsAuto ();
if (op.isValid)
op.Apply (dest, src, rois);
}
public unsafe void AutoLevel()
{
ImageSurface dest = Surface.Clone ();
ColorBgra* dstPtr = (ColorBgra*)dest.DataPtr;
ColorBgra* srcPtr = (ColorBgra*)Surface.DataPtr;
int len = Surface.Data.Length / 4;
UnaryPixelOps.Level levels = null;
HistogramRgb histogram = new HistogramRgb();
histogram.UpdateHistogram (Surface, new Rectangle (0, 0, Surface.Width, Surface.Height));
levels = histogram.MakeLevelsAuto();
if (levels.isValid)
levels.Apply (dstPtr, srcPtr, len);
using (Context g = new Context (Surface)) {
g.AppendPath (PintaCore.Layers.SelectionPath);
g.FillRule = FillRule.EvenOdd;
g.Clip ();
g.SetSource (dest);
g.Paint ();
}
(dest as IDisposable).Dispose ();
}