internal void Start(BaseEffect effect,
Cairo.ImageSurface source,
Cairo.ImageSurface dest,
Gdk.Rectangle renderBounds)
{
Debug.WriteLine("AsyncEffectRenderer.Start ()");
if (effect == null)
{
throw new ArgumentNullException("effect");
}
if (source == null)
{
throw new ArgumentNullException("source");
}
if (dest == null)
{
throw new ArgumentNullException("dest");
}
if (renderBounds.IsEmpty)
{
throw new ArgumentException("renderBounds.IsEmpty");
}
// It is important the effect's properties don't change during rendering.
// So a copy is made for the render.
this.effect = effect.Clone();
this.source_surface = source;
this.dest_surface = dest;
this.render_bounds = renderBounds;
// If a render is already in progress, then cancel it,
// and start a new render.
if (IsRendering)
{
cancel_render_flag = true;
restart_render_flag = true;
return;
}
StartRender();
}
internal void Start (BaseEffect effect,
Cairo.ImageSurface source,
Cairo.ImageSurface dest,
Gdk.Rectangle renderBounds)
{
Debug.WriteLine ("AsyncEffectRenderer.Start ()");
if (effect == null)
throw new ArgumentNullException ("effect");
if (source == null)
throw new ArgumentNullException ("source");
if (dest == null)
throw new ArgumentNullException ("dest");
if (renderBounds.IsEmpty)
throw new ArgumentException ("renderBounds.IsEmpty");
// It is important the effect's properties don't change during rendering.
// So a copy is made for the render.
this.effect = effect.Clone();
this.source_surface = source;
this.dest_surface = dest;
this.render_bounds = renderBounds;
// If a render is already in progress, then cancel it,
// and start a new render.
if (IsRendering) {
cancel_render_flag = true;
restart_render_flag = true;
return;
}
StartRender ();
}
