private void RenderTask(RenderTask task)
{
Rect contentRect = new Rect(0, 0, desktop.Width, desktop.Height);
var dirtyRect = contentRect;
if (task != null)
dirtyRect = task.DirtyArea.Intersection(contentRect);
if (dirtyRect.IsZero)
return;
//dt = DateTime.Now;
var dc = new DrawingContext(bitmap);
dc.PushClippingRectangle(dirtyRect);
if (!dc.ClippingRectangle.IsZero)
{
desktop.RenderRecursive(dc);
desktop.PostRenderRecursive(dc);
}
dc.PopClippingRectangle();
dc.Close();
//ts = DateTime.Now - dt;
if (OnRenderRequest != null)
OnRenderRequest(bitmap, dirtyRect);
else
bitmap.Flush(dirtyRect.X, dirtyRect.Y, dirtyRect.Width, dirtyRect.Height);
//Rect dirtyRect2 = new Rect(0, 0, 300, 20);
//dc = new DrawingContext(screen);
//dc.PushClippingRectangle(dirtyRect2);
//Font font = Resources.GetFont(Resources.FontResources.CourierNew_10);
//dc.DrawRectangle(new SolidColorBrush(Color.White), null, 0, 0, 300, 20);
//dc.DrawText(dirtyRect.ToString() + "; Render: " + ts.ToString(), font, Color.Red, 3, 3);
//dc.PopClippingRectangle();
//dc.Close();
//screen.Flush(dirtyRect2.X, dirtyRect2.Y, dirtyRect2.Width, dirtyRect2.Height);
//Debug.Print("Render task: " + ts.ToString());
}
protected internal virtual void RenderRecursive(DrawingContext dc)
{
Debug.Assert(this.IsMeasureValid && this.IsArrangeValid);
dc.Translate(_offsetX, _offsetY);
dc.PushClippingRectangle(0, 0, _renderWidth, _renderHeight);
try
{
Debug.Assert(this.Visibility == Visibility.Visible);
if (!dc.EmptyClipRect)
{
OnRender(dc);
UIElementCollection children = _logicalChildren;
if (children != null)
{
int n = children.Count;
for (int i = 0; i < n; i++)
{
UIElement child = children[i];
if (child.IsRenderable())
child.RenderRecursive(dc);
}
}
}
}
finally
{
dc.PopClippingRectangle();
dc.Translate(-_offsetX, -_offsetY);
//-------------------------------------------------------------------------------
// Reset the render flags.
_flags &= ~(Flags.IsSubtreeDirtyForRender | Flags.IsDirtyForRender);
}
}
internal void RenderRecursive(DrawingContext dc)
{
if (!isVisible || isSuspended)
return;
dc.PushClippingRectangle(ScreenArea);
if (!dc.ClippingRectangle.IsZero)
{
OnRender(dc);
for (int i = 0; i < children.Count; i++)
{
Control child = children[i];
if (child != null)
child.RenderRecursive(dc);
}
}
dc.PopClippingRectangle();
}
