diff options
| -rw-r--r-- | source/blender/blenkernel/BKE_screen.h | 10 | ||||
| -rw-r--r-- | source/blender/editors/interface/view2d.c | 8 |
2 files changed, 17 insertions, 1 deletions
diff --git a/source/blender/blenkernel/BKE_screen.h b/source/blender/blenkernel/BKE_screen.h index edab543fc37..1090deae93f 100644 --- a/source/blender/blenkernel/BKE_screen.h +++ b/source/blender/blenkernel/BKE_screen.h @@ -183,6 +183,16 @@ typedef struct ARegionType { /* return context data */ int (*context)(const struct bContext *C, const char *member, struct bContextDataResult *result); + /* Is called whenever the current visible View2D's region changes. + * + * Used from user code such as view navigation/zoom operators to inform region about changes. + * The goal is to support zoom-to-fit features which gets disabled when manual navigation is + * performed. + * + * This callback is not called on indirect changes of the current viewport (which could happen + * when the `v2d->tot is changed and `cur` is adopted accordingly). */ + void (*on_view2d_changed)(const struct bContext *C, struct ARegion *region); + /* custom drawing callbacks */ ListBase drawcalls; diff --git a/source/blender/editors/interface/view2d.c b/source/blender/editors/interface/view2d.c index 9d029f3292f..f15a95880f8 100644 --- a/source/blender/editors/interface/view2d.c +++ b/source/blender/editors/interface/view2d.c @@ -853,9 +853,15 @@ void UI_view2d_curRect_validate(View2D *v2d) ui_view2d_curRect_validate_resize(v2d, false); } -void UI_view2d_curRect_changed(const bContext *UNUSED(C), View2D *v2d) +void UI_view2d_curRect_changed(const bContext *C, View2D *v2d) { UI_view2d_curRect_validate(v2d); + + ARegion *region = CTX_wm_region(C); + + if (region->type->on_view2d_changed != NULL) { + region->type->on_view2d_changed(C, region); + } } /* ------------------ */ |