/// <summary>
/// Performs a rendering pass on the specified <see cref="SkiaFrameworkElement"/> and its descendants.
/// </summary>
/// <param name="element">The element.</param>
/// <param name="mode">The mode.</param>
protected void RenderSingle(SkiaFrameworkElement element, BindingPropertyMode mode)
{
SkiaFrameworkElement toRender = element.Parent != null ? element.Parent : element;
var bounds = toRender.Bounds;
if (mode == BindingPropertyMode.AffectsLayout)
{
toRender.InvalidateBounds();
if (toRender.Bounds.Contains(bounds))
{
bounds = toRender.Bounds;
}
else
{
bounds.Width += 1;
bounds.Height += 1;
}
}
if (bounds.Left < Source.Width && bounds.Top < Source.Height)
{
Source.Lock();
T context = CreateDrawingContext();
context.BeginDrawing();
context.ClipRect(bounds, new CornerRadius());
context.Clear(Colors.Transparent);
SkiaTree.Root.Invalidate(context, bounds, 1);
context.EndDrawing();
if (bounds.Right > Source.Width)
{
bounds.Width = Source.Width - bounds.Left;
}
if (bounds.Bottom > Source.Height)
{
bounds.Height = Source.Height - bounds.Top;
}
OnRenderCompleted(Source.BackBuffer, (int)Source.Width, (int)Source.Height, (int)Source.Width * 4);
Source.AddDirtyRect(new Int32Rect((int)Math.Max(bounds.Left, 0), (int)Math.Max(bounds.Top, 0), (int)bounds.Width, (int)bounds.Height));
Source.Unlock();
}
}
/// <summary>
/// Performs a full rendering of the current <see cref="SkiaTree"/>.
/// </summary>
protected void Render()
{
Source.Lock();
T context = CreateDrawingContext();
context.BeginDrawing();
context.Clear(Colors.Transparent);
SkiaTree.Root.Render(context, new Rect(0, 0, _host.ActualWidth, _host.ActualHeight), GetVirtualizedBounds(), 1);
context.EndDrawing();
OnRenderCompleted(Source.BackBuffer, (int)Source.Width, (int)Source.Height, (int)Source.Width * 4);
Source.AddDirtyRect(new Int32Rect(0, 0, (int)Source.Width, (int)Source.Height));
Source.Unlock();
OnSourceChanged();
}
