/// <summary>
/// Renders this face.
/// </summary>
public void Render(int offsetX, int offsetY)
{
renderingStack.Push(this);
try
{
if (this.Background.Color.HasValue && Size.Width.HasValue && Size.Height.HasValue)
{
Rectangle DrawArea = new Rectangle(offsetX, offsetY, Size.Width.Value, Size.Height.Value);
Gl.glMatrixMode(Gl.GL_MODELVIEW);
Gl.glPushMatrix();
Gl.glLoadIdentity();
Gl.glScalef(Game.Scale, Game.Scale, 1);
Gl.glBlendFunc(Gl.GL_SRC_ALPHA, Gl.GL_ONE_MINUS_SRC_ALPHA);
GlHelper.SetColor(this.Background.Color.Value);
Gl.glBegin(Gl.GL_QUADS);
Gl.glVertex3f(DrawArea.Left, DrawArea.Top, 0);
Gl.glVertex3f(DrawArea.Right, DrawArea.Top, 0);
Gl.glVertex3f(DrawArea.Right, DrawArea.Bottom, 0);
Gl.glVertex3f(DrawArea.Left, DrawArea.Bottom, 0);
Gl.glEnd();
Gl.glColor3f(1, 1, 1);
Gl.glPopMatrix();
}
if (this.Background.Image.HasValue)
{
string currentImageId = this.Background.Image.Value;
if (string.IsNullOrEmpty(lastImageId) || currentImageId != lastImageId)
{
if (lastTexture != null)
{
lastTexture.RemoveUser();
}
lastImageId = currentImageId;
lastTexture = Game.TextureManager.GetTexture(this.Background.Image.Value);
}
lastTexture.Draw(offsetX, offsetY);
}
// TODO: Implement background repeat, preferably by cleverly using texture coordinates on the image rendering quad.
// This is probably impossible for images in tile-sets (and any with custom DrawArea) without the use of shaders.
// We can either split it in multiple quads (one tile each) - that's quite wasteful, or we can make the TextureManagerItem
// split the original tile-set into multiple autonomous textures (tile-sets aren't implemented yet anyway)
if (this.Background.Repeat.GetValueOrDefault(GuiRepeatStyle.NoRepeat) != GuiRepeatStyle.NoRepeat)
{
throw new NotSupportedException("Background repeat not supported yet.");
}
foreach (var control in Controls)
{
control.Render(offsetX, offsetY);
}
}
finally
{
renderingStack.Pop();
}
}
