private void LoadImage(string path, ImageBuffer destImage, bool invertImage = false)
{
lock (locker)
{
if (!cachedImages.TryGetValue(path, out ImageBuffer cachedImage))
{
using (var imageStream = OpenStream(path))
using (var bitmap = new Bitmap(imageStream))
{
cachedImage = new ImageBuffer();
ImageIOWindowsPlugin.ConvertBitmapToImage(cachedImage, bitmap);
}
if (cachedImage.Width < 200 && cachedImage.Height < 200)
{
// only cache relatively small images
cachedImages.Add(path, cachedImage);
}
}
// Themed icons are black and need be inverted on dark themes, or when white icons are requested
if (invertImage)
{
cachedImage = cachedImage.InvertLightness();
cachedImage.SetRecieveBlender(new BlenderPreMultBGRA());
}
destImage.CopyFrom(cachedImage);
}
}
private void UpdateHistogramDisplay()
{
if (_histogramRawCache != null)
{
var graphics2D = _histogramDisplayCache.NewGraphics2D();
graphics2D.Clear(Color.Transparent);
_histogramDisplayCache.CopyFrom(_histogramRawCache);
graphics2D.FillRectangle(0, 0, RangeStart * _histogramDisplayCache.Width, _histogramDisplayCache.Height, new Color(Color.Red, 100));
graphics2D.FillRectangle(RangeEnd * _histogramDisplayCache.Width, 0, 255, _histogramDisplayCache.Height, new Color(Color.Red, 100));
graphics2D.Line(RangeStart * _histogramDisplayCache.Width, 0, RangeStart * _histogramDisplayCache.Width, _histogramDisplayCache.Height, new Color(Color.LightGray, 200));
graphics2D.Line(RangeEnd * _histogramDisplayCache.Width, 0, RangeEnd * _histogramDisplayCache.Width, _histogramDisplayCache.Height, new Color(Color.LightGray, 200));
}
}
private void RebuildColorToAlphaImage(ImageBuffer sourceImage, ImageBuffer alphaImage, ImageBuffer displayImage)
{
if (sourceImage == null)
{
return;
}
// build the alpha image
if (alphaImage == null)
{
alphaImage = new ImageBuffer(sourceImage.Width, sourceImage.Height);
}
else if (alphaImage.Width != sourceImage.Width ||
alphaImage.Height != sourceImage.Height)
{
alphaImage.Allocate(sourceImage.Width, sourceImage.Height, sourceImage.BitDepth, sourceImage.GetRecieveBlender());
}
byte[] sourceBuffer = sourceImage.GetBuffer();
byte[] destBuffer = alphaImage.GetBuffer();
Parallel.For(0, sourceImage.Height, (y) =>
//for(int y = 0; y < sourceImage.Height; y++)
{
int imageOffset = sourceImage.GetBufferOffsetY(y);
for (int x = 0; x < sourceImage.Width; x++)
{
int imageBufferOffsetWithX = imageOffset + x * 4;
var b = sourceBuffer[imageBufferOffsetWithX + 0];
var g = sourceBuffer[imageBufferOffsetWithX + 1];
var r = sourceBuffer[imageBufferOffsetWithX + 2];
destBuffer[imageBufferOffsetWithX + 0] = b;
destBuffer[imageBufferOffsetWithX + 1] = g;
destBuffer[imageBufferOffsetWithX + 2] = r;
destBuffer[imageBufferOffsetWithX + 3] = GetAlphaFromHue(r, g, b, RangeStart, RangeEnd);
}
//}
});
alphaImage.MarkImageChanged();
displayImage.CopyFrom(alphaImage);
}
public void LoadImage(string path, ImageBuffer destImage)
{
ImageBuffer cachedImage = null;
if (!cachedImages.TryGetValue(path, out cachedImage))
{
using (var imageStream = OpenSteam(path))
{
var bitmap = new Bitmap(imageStream);
cachedImage = new ImageBuffer();
ImageIOWindowsPlugin.ConvertBitmapToImage(cachedImage, bitmap);
}
if (cachedImage.Width < 200 && cachedImage.Height < 200)
{
// only cache relatively small images
cachedImages.Add(path, cachedImage);
}
}
destImage.CopyFrom(cachedImage);
}
