Plane hacking; scrolling engine is officially done(tm) now2000-06-20 Federico Mena Quintero <federico@helixcode.com>

	* image-view.c (paint_rectangle): Special-case zoom == 1.0 to
	unconditionally use GDK_INTERP_NEAREST.  Pixops should optimize
	this itself, but things seem to be slower if you use other
	interpolation types even when the zoom is 1.0.  Also,
	short-circuit the fastest case to not create a temporary pixbuf
	and thus avoid a memcpy().
	(request_paint_area): Short-circuit NEAREST interpolation and zoom
	== 1.0 to paint synchronously.
	(scroll_to): Use request_paint_area() instead of calling
	uta_add_rect() directly.  This lets us do the short-circuiting
	there.
	(ImageViewPrivate): Added a second microtile array for
	interpolated drawing.
	(remove_dirty_region): Free both utas.
	(paint_iteration_idle): Handle both utas.  This is the core of
	two-pass scrolling:  when a rectangle is pulled from the first
	uta, add it to the second uta.
	(scroll_to): Handle both utas.

1 files changed, 3 insertions, 6 deletions

diff --git a/TODO b/TODO
index 739e9d06..70c48071 100644
--- a/TODO
+++ b/TODO
@@ -3,12 +3,9 @@ Federico Mena-Quintero (federico@gimp.org).
 
 * Finish the ImageView widget:
 
-	- Re-center the offsets when changing the zoom factor.
-
-	- Scrolling using gdk_window_copy_area().  This also requires
-          writing uta_copy_area() for uta.c.
-
-	- Finish uta.c:uta_find_first_glom_rect().
+	- Write a "fast" version of uta.c:uta_find_first_glom_rect().
+	  Right now we just have a hacked version of libart's
+	  function.
 
 	- Figure out what to do with the color correction tables; we
           are not using them right now.