/// <summary>
/// Sets the currently active skin, and flags a redraw.
/// </summary>
/// <remarks>
/// Does nothing if no skin has been set for the specified index, or
/// clears current skin if -1.
/// </remarks>
/// <param name="index">Skin index.</param>
private void SetActiveSkin(int index)
{
// Minimize redraws
if (index != this.currentSkin)
{
ComponentSkin skin = null;
if (index != -1)
{
skin = GetSkin(index);
}
if (skin != null || index == -1)
{
this.currentSkin = index;
Redraw();
}
}
}
/// <summary>
/// Draws all skins associated with control, after clipping them to the
/// parent control area.
/// </summary>
/// <param name="spriteBatch">SpriteBatch to draw with.</param>
/// <param name="parentScissor">The scissor region of the parent control.</param>
protected override void DrawControl(SpriteBatch spriteBatch, Rectangle parentScissor)
{
ComponentSkin skin = GetSkin(this.currentSkin);
if (skin != null)
{
Texture2D texture;
// Should the default GUI skin be used?
if (skin.UseCustomSkin)
{
texture = skin.Skin;
}
else
{
texture = GUIManager.SkinTexture;
}
bool draw;
Rectangle source;
Rectangle destination;
int dif;
foreach (GUIRect rect in skin.Rects)
{
draw = true;
source = rect.Source;
// Convert to absolute position
destination = rect.Destination;
destination.X += AbsolutePosition.X;
destination.Y += AbsolutePosition.Y;
if (!parentScissor.Contains(destination))
{
// Perform culling
if (parentScissor.Intersects(destination))
{
// Perform clipping
if (destination.X < parentScissor.X)
{
dif = parentScissor.X - destination.X;
if (destination.Width == source.Width)
{
source.Width -= dif;
source.X += dif;
destination.Width -= dif;
destination.X += dif;
}
else
{
destination.Width -= dif;
destination.X += dif;
}
}
else if (destination.Right > parentScissor.Right)
{
dif = destination.Right - parentScissor.Right;
if (destination.Width == source.Width)
{
source.Width -= dif;
destination.Width -= dif;
}
else
{
destination.Width -= dif;
}
}
if (destination.Y < parentScissor.Y)
{
dif = parentScissor.Y - destination.Y;
if (destination.Height == source.Height)
{
source.Height -= dif;
source.Y += dif;
destination.Height -= dif;
destination.Y += dif;
}
else
{
destination.Height -= dif;
destination.Y += dif;
}
}
else if (destination.Bottom > parentScissor.Bottom)
{
dif = destination.Bottom - parentScissor.Bottom;
if (destination.Height == source.Height)
{
source.Height -= dif;
destination.Height -= dif;
}
else
{
destination.Height -= dif;
}
}
}
else
{
draw = false;
}
}
if (draw)
{
// Actually draw finally!
spriteBatch.Draw(
texture,
destination,
source,
Color.White
);
}
}
}
}
