fix infobar race

Author: jcupitt

TODO

@@ -1,12 +1,3 @@
-- try:
-
-	A1 = Colour "sRGB" [50, 100, 150]
-	A2 = Matrix [A1.value]
-	A3 = im_mask2vips A2
-	A4 = Image A3
-	A5 = extract_area 0 0 1 1 A4
-
-  Open viewer in A5, infobar shows (0), shoud show (50)
 
 - recover after crash should sort by date, then by PID
 

src/infobar.c

@@ -30,9 +30,9 @@
 #include "nip4.h"
 
 /*
- */
 #define DEBUG_VERBOSE
 #define DEBUG
+ */
 
 struct _Infobar {
 	GtkWidget parent_instance;

src/tilesource.c

@@ -246,9 +246,17 @@ tilesource_render_notify_idle(void *user_data)
 	/* Only bother fetching the updated tile if it's from our current
 	 * pipeline.
 	 */
-	if (update->image == tilesource->image)
+	if (update->image == tilesource->image) {
 		tilesource_collect(tilesource, &update->rect, update->z);
 
+		/* All operations which depend on this image need to be kicked out of
+		 * cache.
+		 *
+		 * Things like the getpoint() we run for the infobar.
+		 */
+		vips_image_invalidate_all(update->image);
+	}
+
 	/* Matches the g_new() in tilesource_render_notify().
 	 */
 	g_free(update);