internal static void CheckGraphicsForState(Graphics?graphics, DrawingEventFlags flags)
{
if (graphics is null || !flags.HasFlag(DrawingEventFlags.CheckState) ||
flags.HasFlag(DrawingEventFlags.GraphicsStateUnclean))
{
return;
}
// Check to see if we've actually corrupted the state
graphics.GetContextInfo(out PointF offset, out Region? clip);
using (clip)
{
bool isInfinite = clip?.IsInfinite(graphics) ?? true;
Debug.Assert(offset.IsEmpty, "transform has been modified");
Debug.Assert(isInfinite, "clipping as been applied");
}
}
internal static void CheckGraphicsForState(Graphics?graphics, DrawingEventFlags flags)
{
if (graphics is null || !flags.HasFlag(DrawingEventFlags.CheckState) ||
flags.HasFlag(DrawingEventFlags.GraphicsStateUnclean))
{
return;
}
// Check to see if we've actually corrupted the state
object[] data = (object[])graphics.GetContextInfo();
using Region clipRegion = (Region)data[0];
using Matrix worldTransform = (Matrix)data[1];
float[] elements = worldTransform?.Elements !;
bool isInfinite = clipRegion.IsInfinite(graphics);
Debug.Assert((int)elements[4] == 0 && (int)elements[5] == 0, "transform has been modified");
Debug.Assert(isInfinite, "clipping as been applied");
}
