Node Editor: Change minimum zoom

Now with Geometry Nodes in Blender,
trees can become much bigger than before.
This changes the minimum zoom value in the node editor.

Differential Revision: https://developer.blender.org/D13254

2 files changed, 20 insertions, 1 deletions

diff --git a/source/blender/blenloader/intern/versioning_300.c b/source/blender/blenloader/intern/versioning_300.c
index e0e59600704..b8004f60c59 100644
--- a/source/blender/blenloader/intern/versioning_300.c
+++ b/source/blender/blenloader/intern/versioning_300.c
@@ -2194,5 +2194,24 @@ void blo_do_versions_300(FileData *fd, Library *UNUSED(lib), Main *bmain)
         }
       }
     }
+
+    /* Change minimum zoom to 0.05f in the node editor. */
+    LISTBASE_FOREACH (bScreen *, screen, &bmain->screens) {
+      LISTBASE_FOREACH (ScrArea *, area, &screen->areabase) {
+        LISTBASE_FOREACH (SpaceLink *, sl, &area->spacedata) {
+          if (sl->spacetype == SPACE_NODE) {
+            ListBase *regionbase = (sl == area->spacedata.first) ? &area->regionbase :
+                                                                   &sl->regionbase;
+            LISTBASE_FOREACH (ARegion *, region, regionbase) {
+              if (region->regiontype == RGN_TYPE_WINDOW) {
+                if (region->v2d.minzoom > 0.05f) {
+                  region->v2d.minzoom = 0.05f;
+                }
+              }
+            }
+          }
+        }
+      }
+    }
   }
 }
diff --git a/source/blender/editors/space_node/space_node.cc b/source/blender/editors/space_node/space_node.cc
index a94deb97f42..72861732b27 100644
--- a/source/blender/editors/space_node/space_node.cc
+++ b/source/blender/editors/space_node/space_node.cc
@@ -285,7 +285,7 @@ static SpaceLink *node_create(const ScrArea *UNUSED(area), const Scene *UNUSED(s
   region->v2d.max[0] = 32000.0f;
   region->v2d.max[1] = 32000.0f;
 
-  region->v2d.minzoom = 0.09f;
+  region->v2d.minzoom = 0.05f;
   region->v2d.maxzoom = 2.31f;
 
   region->v2d.scroll = (V2D_SCROLL_RIGHT | V2D_SCROLL_BOTTOM);