/// <summary>
/// Renders the specified visual.
/// </summary>
/// <param name="visual">The visual to render.</param>
/// <param name="context">The drawing context.</param>
private void Render(IVisual visual, DrawingContext context)
{
if (visual.IsVisible && visual.Opacity > 0)
{
Matrix transform = Matrix.Identity;
if (visual.RenderTransform != null)
{
Matrix current = context.CurrentTransform;
Matrix offset = Matrix.Translation(visual.TransformOrigin.ToPixels(visual.Bounds.Size));
transform = -current * -offset * visual.RenderTransform.Value * offset * current;
}
transform *= Matrix.Translation(visual.Bounds.Position);
using (visual.ClipToBounds ? context.PushClip(visual.Bounds) : null)
using (context.PushTransform(transform))
{
visual.Render(context);
foreach (var child in visual.VisualChildren)
{
this.Render(child, context);
}
}
}
}
/// <summary>
/// Renders the specified visual.
/// </summary>
/// <param name="visual">The visual to render.</param>
/// <param name="context">The drawing context.</param>
private void Render(IVisual visual, DrawingContext context, Matrix translation, Matrix transform)
{
if (visual.IsVisible && visual.Opacity > 0)
{
// Translate any existing transform into this controls coordinate system.
Matrix offset = Matrix.Translation(visual.Bounds.Position);
transform = offset * transform * -offset;
// Update the current offset.
translation *= Matrix.Translation(visual.Bounds.Position);
// Apply the control's render transform, if any.
if (visual.RenderTransform != null)
{
offset = Matrix.Translation(visual.TransformOrigin.ToPixels(visual.Bounds.Size));
transform *= -offset * visual.RenderTransform.Value * offset;
}
// Draw the control and its children.
var m = transform * translation;
var d = context.PushTransform(m);
using (visual.ClipToBounds ? context.PushClip(visual.Bounds) : null)
{
visual.Render(context);
d.Dispose();
foreach (var child in visual.VisualChildren)
{
this.Render(child, context, translation, transform);
}
}
}
}