Fix for

 * [#35724] Backdrop zoom can be set to a very small value, making the backdrop disapear.

There were checks in the drawnode that needed to be placed in the readfile.
The checks checked if the zoomlevel was 0.0, then it was defaulted to 1.0, but the zoomvalue had a minimum limit of 0.01, hence it did not work.
Moved the check to the readfile and checked for all values smaller then 0.02. These values are then reset to 1.0

Jeroen & Monique
 - At Mind -

1 files changed, 23 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index dc1bab7870e..44dd3926777 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -9476,6 +9476,7 @@ static void do_versions(FileData *fd, Library *lib, Main *main)
 
 
 	{
+		bScreen *sc;
 		Object *ob;
 
 		for (ob = main->object.first; ob; ob = ob->id.next) {
@@ -9491,6 +9492,28 @@ static void do_versions(FileData *fd, Library *lib, Main *main)
 				}
 			}
 		}
+
+		/*
+		 * FIX some files have a zoom level of 0, and was checked during the drawing of the node space
+		 *
+		 * We moved this check to the do versions to be sure the value makes any sense.
+		 */
+		for (sc = main->screen.first; sc; sc = sc->id.next) {
+			ScrArea *sa;
+			for (sa = sc->areabase.first; sa; sa = sa->next) {
+				SpaceLink *sl;
+				for (sl = sa->spacedata.first; sl; sl = sl->next) {
+					if (sl->spacetype == SPACE_NODE)
+					{
+						SpaceNode *snode = (SpaceNode *)sl;
+						if (snode->zoom < 0.02)
+						{
+							snode->zoom = 1.0;
+						}
+					}
+				}
+			}
+		}
 	}
 
 	/* WATCH IT!!!: pointers from libdata have not been converted yet here! */