private void OnExpose(Context ctx, Region region)
{
SetClip(ctx, region);
if (Transition != null)
{
bool done = false;
foreach (Gdk.Rectangle area in GetRectangles(region))
{
BlockProcessor proc = new BlockProcessor(area, block_size);
Gdk.Rectangle subarea;
while (proc.Step(out subarea))
{
ctx.Save();
SetClip(ctx, subarea);
done = !Transition.OnExpose(ctx, Allocation);
ctx.Restore();
}
}
if (done)
{
System.Console.WriteLine("frames = {0}", Transition.Frames);
Transition = null;
}
}
else if (effect != null)
{
foreach (Gdk.Rectangle area in GetRectangles(region))
{
BlockProcessor proc = new BlockProcessor(area, block_size);
Gdk.Rectangle subarea;
while (proc.Step(out subarea))
{
ctx.Save();
SetClip(ctx, subarea);
effect.OnExpose(ctx, Allocation);
ctx.Restore();
}
}
}
else
{
ctx.Operator = Operator.Source;
SurfacePattern p = new SurfacePattern(current.Surface);
p.Filter = Filter.Fast;
SetClip(ctx, region);
ctx.Matrix = current.Fill(Allocation);
ctx.Source = p;
ctx.Paint();
p.Destroy();
}
}
public virtual void ExposeEvent(object sender, ExposeEventArgs args)
{
Context ctx = Widgets.CairoUtils.CreateContext(view.GdkWindow);
Gdk.Color c = view.Style.Background(view.State);
ctx.Source = new SolidPattern(c.Red / (float)ushort.MaxValue,
c.Blue / (float)ushort.MaxValue,
c.Green / (float)ushort.MaxValue);
ctx.Paint();
effect.OnExpose(ctx, view.Allocation);
args.RetVal = true;
}
