Multitouch trackpad 2 fingers gestures implementation

- 2 fingers scroll (MOUSEPAN / GHOST_kTrackpadEventScroll event) pans/scrolls the view
- 2 fingers pinch (MOUSEZOOM / GHOST_kTrackpadEventMagnify event) zooms the view
And in 3D view:
- alt + 2 fingers scroll rotates the view
- 2 fingers rotation (MOUSEROTATE / GHOST_kTrackpadEventRotate) orbits the view.

The implementation uses a new GHOST event type: GHOST_kEventTrackpad, that is then dispatched as Blender MOUSEPAN, MOUSEZOOM
or MOUSEROTATE events.

This is currently fully implemented for OSX (GHOST Cocoa fires the new events), with auto-detection of the source peripheral, so that a regular mouse still sends MOUSEWHEEL events.

1 files changed, 3 insertions, 0 deletions

diff --git a/source/blender/editors/space_outliner/outliner.c b/source/blender/editors/space_outliner/outliner.c
index 93b32086614..79a16a50544 100644
--- a/source/blender/editors/space_outliner/outliner.c
+++ b/source/blender/editors/space_outliner/outliner.c
@@ -5104,6 +5104,9 @@ static char *keymap_mouse_menu(void)
 	str += sprintf(str, formatstr, "Wheel Down", WHEELDOWNMOUSE);
 	str += sprintf(str, formatstr, "Wheel In", WHEELINMOUSE);
 	str += sprintf(str, formatstr, "Wheel Out", WHEELOUTMOUSE);
+	str += sprintf(str, formatstr, "Mouse/Trackpad Pan", MOUSEPAN);
+	str += sprintf(str, formatstr, "Mouse/Trackpad Zoom", MOUSEZOOM);
+	str += sprintf(str, formatstr, "Mouse/Trackpad Rotate", MOUSEROTATE);
 	
 	return string;
 }