public override void Draw(Batcher batcher, float parentAlpha)
{
Validate();
if (transform)
{
ApplyTransform(batcher, ComputeTransform());
}
if (_firstWidget != null && _firstWidget.IsVisible())
{
var scissor = ScissorStack.CalculateScissors(_stage?.Camera, batcher.TransformMatrix, _firstWidgetBounds);
if (ScissorStack.PushScissors(scissor))
{
batcher.EnableScissorTest(true);
_firstWidget.Draw(batcher, parentAlpha * color.A);
batcher.EnableScissorTest(false);
ScissorStack.PopScissors();
}
}
if (_secondWidget != null && _secondWidget.IsVisible())
{
var scissor = ScissorStack.CalculateScissors(_stage?.Camera, batcher.TransformMatrix,
_secondWidgetBounds);
if (ScissorStack.PushScissors(scissor))
{
batcher.EnableScissorTest(true);
_secondWidget.Draw(batcher, parentAlpha * color.A);
batcher.EnableScissorTest(false);
ScissorStack.PopScissors();
}
}
_style.Handle.Draw(batcher, _handleBounds.X, _handleBounds.Y, _handleBounds.Width, _handleBounds.Height,
new Color(color, (int)(color.A * parentAlpha)));
if (transform)
{
ResetTransform(batcher);
}
}
/// <summary>
/// Clips the specified screen aligned rectangle, specified relative to the transform matrix of the stage's Batch. The
/// transform matrix and the stage's camera must not have rotational components. Calling this method must be followed by a call
/// to clipEnd() if true is returned.
/// </summary>
public bool ClipBegin(Batcher batcher, float x, float y, float width, float height)
{
if (width <= 0 || height <= 0)
{
return(false);
}
var tableBounds = RectangleExt.FromFloats(x, y, width, height);
var scissorBounds = ScissorStack.CalculateScissors(stage?.Entity?.Scene?.Camera, batcher.TransformMatrix, tableBounds);
if (ScissorStack.PushScissors(scissorBounds))
{
batcher.EnableScissorTest(true);
return(true);
}
return(false);
}
/// <summary>
/// Ends clipping begun by clipBegin(Batcher, float, float, float, float)
/// </summary>
/// <returns>The end.</returns>
public void ClipEnd(Batcher batcher)
{
batcher.EnableScissorTest(false);
ScissorStack.PopScissors();
}
