macOS: add trackpad smart zoom event support

This is done with two-finger double tap on trackpads, and is usually used to
zoom into an element under the cursor.

It can now be used for toggling local view in the 3D viewport.

Differential Revision: https://developer.blender.org/D6588

8 files changed, 31 insertions, 2 deletions

diff --git a/intern/ghost/GHOST_Types.h b/intern/ghost/GHOST_Types.h
index c7c9f91a361..98dd1de867f 100644
--- a/intern/ghost/GHOST_Types.h
+++ b/intern/ghost/GHOST_Types.h
@@ -436,7 +436,8 @@ typedef enum {
   GHOST_kTrackpadEventScroll,
   GHOST_kTrackpadEventRotate,
   GHOST_kTrackpadEventSwipe, /* Reserved, not used for now */
-  GHOST_kTrackpadEventMagnify
+  GHOST_kTrackpadEventMagnify,
+  GHOST_kTrackpadEventSmartMagnify
 } GHOST_TTrackpadEventSubTypes;
 
 typedef struct {
diff --git a/intern/ghost/intern/GHOST_SystemCocoa.mm b/intern/ghost/intern/GHOST_SystemCocoa.mm
index e50e478b9fc..b0e11bd4a96 100644
--- a/intern/ghost/intern/GHOST_SystemCocoa.mm
+++ b/intern/ghost/intern/GHOST_SystemCocoa.mm
@@ -1726,6 +1726,19 @@ GHOST_TSuccess GHOST_SystemCocoa::handleMouseEvent(void *eventPtr)
                                         0));
     } break;
 
+    case NSEventTypeSmartMagnify: {
+      NSPoint mousePos = [cocoawindow mouseLocationOutsideOfEventStream];
+      GHOST_TInt32 x, y;
+      window->clientToScreenIntern(mousePos.x, mousePos.y, x, y);
+      pushEvent(new GHOST_EventTrackpad([event timestamp] * 1000,
+                                        window,
+                                        GHOST_kTrackpadEventSmartMagnify,
+                                        x,
+                                        y,
+                                        0,
+                                        0));
+    } break;
+
     case NSEventTypeRotate: {
       NSPoint mousePos = [cocoawindow mouseLocationOutsideOfEventStream];
       GHOST_TInt32 x, y;
diff --git a/intern/ghost/intern/GHOST_WindowViewCocoa.h b/intern/ghost/intern/GHOST_WindowViewCocoa.h
index cee40924b73..14c70382916 100644
--- a/intern/ghost/intern/GHOST_WindowViewCocoa.h
+++ b/intern/ghost/intern/GHOST_WindowViewCocoa.h
@@ -154,6 +154,11 @@
   systemCocoa->handleMouseEvent(event);
 }
 
+- (void)smartMagnifyWithEvent:(NSEvent *)event
+{
+  systemCocoa->handleMouseEvent(event);
+}
+
 - (void)rotateWithEvent:(NSEvent *)event
 {
   systemCocoa->handleMouseEvent(event);
diff --git a/release/scripts/presets/keyconfig/keymap_data/blender_default.py b/release/scripts/presets/keyconfig/keymap_data/blender_default.py
index 543a36aa7c1..617f2d34064 100644
--- a/release/scripts/presets/keyconfig/keymap_data/blender_default.py
+++ b/release/scripts/presets/keyconfig/keymap_data/blender_default.py
@@ -942,6 +942,7 @@ def km_view3d(params):
         # Visibility.
         ("view3d.localview", {"type": 'NUMPAD_SLASH', "value": 'PRESS'}, None),
         ("view3d.localview", {"type": 'SLASH', "value": 'PRESS'}, None),
+        ("view3d.localview", {"type": 'MOUSESMARTZOOM', "value": 'ANY'}, None),
         ("view3d.localview_remove_from", {"type": 'M', "value": 'PRESS'}, None),
         # Navigation.
         ("view3d.rotate", {"type": 'MIDDLEMOUSE', "value": 'PRESS'}, None),
diff --git a/release/scripts/presets/keyconfig/keymap_data/industry_compatible_data.py b/release/scripts/presets/keyconfig/keymap_data/industry_compatible_data.py
index 6b4f4976596..d84699fc0f6 100644
--- a/release/scripts/presets/keyconfig/keymap_data/industry_compatible_data.py
+++ b/release/scripts/presets/keyconfig/keymap_data/industry_compatible_data.py
@@ -630,6 +630,7 @@ def km_view3d(params):
         ("wm.search_menu", {"type": 'TAB', "value": 'PRESS'}, None),
         # Visibility.
         ("view3d.localview", {"type": 'I', "value": 'PRESS', "shift": True}, None),
+        ("view3d.localview", {"type": 'MOUSESMARTZOOM', "value": 'ANY'}, None),
         op_menu_pie("VIEW3D_MT_view_pie", {"type": 'V', "value": 'PRESS'}),
         # Navigation.
         ("view3d.rotate", {"type": 'LEFTMOUSE', "value": 'PRESS', "alt": True}, None),
diff --git a/source/blender/makesrna/intern/rna_wm.c b/source/blender/makesrna/intern/rna_wm.c
index 532992baa5c..bf3c562f95f 100644
--- a/source/blender/makesrna/intern/rna_wm.c
+++ b/source/blender/makesrna/intern/rna_wm.c
@@ -90,6 +90,7 @@ static const EnumPropertyItem event_mouse_type_items[] = {
     {MOUSEPAN, "TRACKPADPAN", 0, "Mouse/Trackpad Pan", ""},
     {MOUSEZOOM, "TRACKPADZOOM", 0, "Mouse/Trackpad Zoom", ""},
     {MOUSEROTATE, "MOUSEROTATE", 0, "Mouse/Trackpad Rotate", ""},
+    {MOUSESMARTZOOM, "MOUSESMARTZOOM", 0, "Mouse/Trackpad Smart Zoom", ""},
     {0, "", 0, NULL, NULL},
     {WHEELUPMOUSE, "WHEELUPMOUSE", 0, "Wheel Up", ""},
     {WHEELDOWNMOUSE, "WHEELDOWNMOUSE", 0, "Wheel Down", ""},
@@ -186,6 +187,7 @@ const EnumPropertyItem rna_enum_event_type_items[] = {
     {MOUSEPAN, "TRACKPADPAN", 0, "Mouse/Trackpad Pan", "MsPan"},
     {MOUSEZOOM, "TRACKPADZOOM", 0, "Mouse/Trackpad Zoom", "MsZoom"},
     {MOUSEROTATE, "MOUSEROTATE", 0, "Mouse/Trackpad Rotate", "MsRot"},
+    {MOUSESMARTZOOM, "MOUSESMARTZOOM", 0, "Mouse/Trackpad Smart Zoom", "MsSmartZoom"},
     {0, "", 0, NULL, NULL},
     {WHEELUPMOUSE, "WHEELUPMOUSE", 0, "Wheel Up", "WhUp"},
     {WHEELDOWNMOUSE, "WHEELDOWNMOUSE", 0, "Wheel Down", "WhDown"},
diff --git a/source/blender/windowmanager/intern/wm_event_system.c b/source/blender/windowmanager/intern/wm_event_system.c
index ba1f34478ed..7339f463855 100644
--- a/source/blender/windowmanager/intern/wm_event_system.c
+++ b/source/blender/windowmanager/intern/wm_event_system.c
@@ -4292,6 +4292,9 @@ void wm_event_add_ghostevent(wmWindowManager *wm, wmWindow *win, int type, void
           pd->deltaX = -pd->deltaX;
           pd->deltaY = -pd->deltaY;
           break;
+        case GHOST_kTrackpadEventSmartMagnify:
+          event.type = MOUSESMARTZOOM;
+          break;
         case GHOST_kTrackpadEventRotate:
           event.type = MOUSEROTATE;
           break;
diff --git a/source/blender/windowmanager/wm_event_types.h b/source/blender/windowmanager/wm_event_types.h
index 252eb9673ae..ebb0d7dd878 100644
--- a/source/blender/windowmanager/wm_event_types.h
+++ b/source/blender/windowmanager/wm_event_types.h
@@ -63,6 +63,8 @@ enum {
   MOUSEPAN = 0x000e,
   MOUSEZOOM = 0x000f,
   MOUSEROTATE = 0x0010,
+  MOUSESMARTZOOM = 0x0017,
+
   /* defaults from ghost */
   WHEELUPMOUSE = 0x000a,
   WHEELDOWNMOUSE = 0x000b,
@@ -359,7 +361,8 @@ enum {
   (((event_type) >= LEFTCTRLKEY && (event_type) <= LEFTSHIFTKEY) || (event_type) == OSKEY)
 
 /* test whether the event is a mouse button */
-#define ISMOUSE(event_type) ((event_type) >= LEFTMOUSE && (event_type) <= BUTTON7MOUSE)
+#define ISMOUSE(event_type) \
+  (((event_type) >= LEFTMOUSE && (event_type) <= BUTTON7MOUSE) || (event_type) == MOUSESMARTZOOM)
 
 #define ISMOUSE_WHEEL(event_type) ((event_type) >= WHEELUPMOUSE && (event_type) <= WHEELOUTMOUSE)
 #define ISMOUSE_GESTURE(event_type) ((event_type) >= MOUSEPAN && (event_type) <= MOUSEROTATE)