public virtual void Draw(IRenderContext context, ISkin skin, Rectangle layout)
{
var layoutWidth = layout.Width - skin.HorizontalScrollBarHeight;
var layoutHeight = layout.Height - skin.VerticalScrollBarWidth;
int childWidth, childHeight;
if (this.m_Child == null || !(this.m_Child is IHasDesiredSize))
{
childWidth = layoutWidth;
childHeight = layoutHeight;
}
else
{
var hasDesiredSize = this.m_Child as IHasDesiredSize;
childWidth = hasDesiredSize.GetDesiredWidth(skin) ?? layoutWidth;
childHeight = hasDesiredSize.GetDesiredHeight(skin) ?? layoutHeight;
if (childWidth < layoutWidth)
{
childWidth = layoutWidth;
}
if (childHeight < layoutHeight)
{
childHeight = layoutHeight;
}
}
if (this.m_RenderTarget == null || this.m_RenderTarget.Width != childWidth ||
this.m_RenderTarget.Height != childHeight)
{
if (this.m_RenderTarget != null)
{
this.m_RenderTarget.Dispose();
}
this.m_RenderTarget = new RenderTarget2D(
context.GraphicsDevice,
Math.Max(1, childWidth),
Math.Max(1, childHeight));
}
skin.BeforeRenderTargetChange(context);
context.PushRenderTarget(this.m_RenderTarget);
context.GraphicsDevice.Clear(Color.Transparent);
skin.AfterRenderTargetChange(context);
try
{
if (this.m_Child != null)
{
this.m_Child.Draw(
context,
skin,
new Rectangle(0, 0, childWidth, childHeight));
}
}
finally
{
skin.BeforeRenderTargetChange(context);
context.PopRenderTarget();
skin.AfterRenderTargetChange(context);
}
skin.DrawScrollableContainer(context, layout, this, this.m_RenderTarget);
}