public static bool SetRgbaColormap(Widget w)
{
Gdk.Colormap cmap = GetRgbaColormap(w.Screen);
if (cmap != null)
{
w.Colormap = cmap;
return(true);
}
return(false);
}
public static Colormap GetRgbaColormap (Screen screen)
{
try {
IntPtr raw_ret = gdk_screen_get_rgba_colormap (screen.Handle);
Gdk.Colormap ret = GLib.Object.GetObject(raw_ret) as Gdk.Colormap;
return ret;
} catch {
Gdk.Visual visual = Gdk.Visual.GetBestWithDepth (32);
if (visual != null) {
Gdk.Colormap cmap = new Gdk.Colormap (visual, false);
return cmap;
}
}
return null;
}
public static Colormap GetRgbaColormap(Screen screen)
{
try {
IntPtr raw_ret = gdk_screen_get_rgba_colormap(screen.Handle);
Gdk.Colormap ret = GLib.Object.GetObject(raw_ret) as Gdk.Colormap;
return(ret);
} catch {
Gdk.Visual visual = Gdk.Visual.GetBestWithDepth(32);
if (visual != null)
{
Gdk.Colormap cmap = new Gdk.Colormap(visual, false);
System.Console.WriteLine("fallback");
return(cmap);
}
}
return(null);
}
public static Colormap GetRgbaColormap(Screen screen)
{
try {
var raw_ret = gdk_screen_get_rgba_colormap(screen.Handle);
var ret = GLib.Object.GetObject(raw_ret) as Gdk.Colormap;
return(ret);
} catch {
Gdk.Visual visual = Gdk.Visual.GetBestWithDepth(32);
if (visual != null)
{
var cmap = new Gdk.Colormap(visual, false);
Log.Debug("fallback");
return(cmap);
}
}
return(null);
}
private void CheckScratchBuffers()
{
if (!this._ScratchBufferAllocated)
{
//Allocate a pixmap to be used for draw operations
this._ScratchRenderBuffer = new Gdk.Pixmap(null, this._Width, this._Height, Gdk.Visual.BestDepth);
this._ScratchDisplayBuffer = new Gdk.Pixbuf(Gdk.Colorspace.Rgb, false, 8, this._Width, this._Height);
this._ScratchBufferAllocated = true;
this._ScratchPenContext = new Gdk.GC(this._ScratchRenderBuffer);
//Todo: This should be a property
this._SelectionColor = new Gdk.Color(0xff, 0, 0);
this._ScratchColorMap = Gdk.Colormap.System;
this._ScratchColorMap.AllocColor(ref this._SelectionColor, true, true);
this._ScratchPenContext.Foreground = this._SelectionColor;
}
}
