protected Gdk.Pixbuf DrawAndConvert()
{
// Things like Padding needs to be set each time after Clear()
plotSurface.SurfacePadding = padding;
using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap_cache)) {
plotSurface.Draw(g, rectSizing.Bounds);
// draw frame
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.None;
g.DrawRectangle(framePen, 0, 0, rectSizing.Width - FrameWidth, rectSizing.Height - FrameWidth);
}
// Florence/NPlot library uses System.Drawing (.NET Base Class Library) types
// have to convert result (System.Drawing.Bitmap) to Gdk.Pixbuf for Gtk usage
#if BitmapToPixbufConversionRaw
return(PixbufFromBitmap(bitmap_cache));
#else
if (memoryStream == null)
{
memoryStream = new System.IO.MemoryStream(MemoryStreamCapacity);
}
memoryStream.Position = 0;
bitmap_cache.Save(memoryStream, imageFormat);
memoryStream.Position = 0;
return(new Gdk.Pixbuf(memoryStream));
#endif
}
public void RedrawPlotSurface()
{
using (var graphics = Graphics.FromImage(plotBitmap))
{
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.Clear(Color.White);
plotSurface.Draw(graphics, new Rectangle(0, 0,
plotBitmap.Width, plotBitmap.Height));
}
// Update OpenGL texture
Textures.Update(TextureId, plotBitmap);
}