private void InvalidateTextRegion(RenderRectangle rect)
{
if (rect.Width != 0 || rect.Height != 0)
{
int x1 = 0;
int y1 = 0;
int x2 = 0;
int y2 = 0;
// upper y
if (rect.Y < this.invalidated.Y)
{
y1 = rect.Y;
}
else
{
y1 = this.invalidated.Y;
}
// lower y
if ((rect.Y + rect.Height) > (this.invalidated.Y + this.invalidated.Height))
{
y2 = rect.Y + rect.Height;
}
else
{
y2 = this.invalidated.Y + this.invalidated.Height;
}
// left x
if (rect.X < this.invalidated.X)
{
x1 = rect.X;
}
else
{
x1 = this.invalidated.X;
}
// right x
if ((rect.X + rect.Width) > (this.invalidated.X + this.invalidated.Width))
{
x2 = rect.X + rect.Width;
}
else
{
x2 = this.invalidated.X + this.invalidated.Width;
}
this.invalidated.X = x1;
this.invalidated.Y = y1;
this.invalidated.Width = x2 - x2;
this.invalidated.Height = y2 - y1;
}
else
{
this.invalidated.X = rect.X;
this.invalidated.Y = rect.Y;
this.invalidated.Width = rect.Width;
this.invalidated.Height = rect.Height;
}
}
public void UpdateTextRegion()
{
this.Interpreter.GraphicsDriver.Update(this.invalidated);
this.invalidated = default(RenderRectangle);
}
