- Add wxWidgets patch to support Cocoa's NSEventTypeMagnify from the Magic Trackpad.

This was originally submitted by Jared Boone in http://trac.wxwidgets.org/ticket/14322
    and has been updaetd to apply cleanly to wxWidgets-3.0 (and less cleanly to 3.0.1 an 3.0.2).
    The ticket is marked as accepted but not scheduled, so no idea if it will ever make it in.

patches/wxwidgets-3.0.0_macosx_magnify_event.patch

@@ -0,0 +1,115 @@
+Index: include/wx/event.h
+===================================================================
+--- include/wx/event.h	(revision 78078)
++++ include/wx/event.h	(working copy)
+@@ -716,6 +716,7 @@
+ wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_AUX2_DOWN, wxMouseEvent);
+ wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_AUX2_UP, wxMouseEvent);
+ wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_AUX2_DCLICK, wxMouseEvent);
++wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_MAGNIFY, wxMouseEvent);
+ 
+     // Character input event type
+ wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_CHAR, wxKeyEvent);
+@@ -1751,6 +1752,8 @@
+     bool Aux1DClick() const { return (m_eventType == wxEVT_AUX1_DCLICK); }
+     bool Aux2DClick() const { return (m_eventType == wxEVT_AUX2_DCLICK); }
+ 
++    bool Magnify() const { return (m_eventType == wxEVT_MAGNIFY); }
++
+     // True if a button is down and the mouse is moving
+     bool Dragging() const
+     {
+@@ -1805,6 +1808,8 @@
+     // Is the system set to do page scrolling?
+     bool IsPageScroll() const { return ((unsigned int)m_linesPerAction == UINT_MAX); }
+ 
++    float GetMagnification() const { return m_magnification; }
++
+     virtual wxEvent *Clone() const { return new wxMouseEvent(*this); }
+     virtual wxEventCategory GetEventCategory() const { return wxEVT_CATEGORY_USER_INPUT; }
+ 
+@@ -1824,6 +1829,8 @@
+     int           m_linesPerAction;
+     int           m_columnsPerAction;
+ 
++    float         m_magnification;
++
+ protected:
+     void Assign(const wxMouseEvent& evt);
+ 
+@@ -4218,6 +4225,7 @@
+ #define EVT_MOUSE_AUX2_DOWN(func) wx__DECLARE_EVT0(wxEVT_AUX2_DOWN, wxMouseEventHandler(func))
+ #define EVT_MOUSE_AUX2_UP(func) wx__DECLARE_EVT0(wxEVT_AUX2_UP, wxMouseEventHandler(func))
+ #define EVT_MOUSE_AUX2_DCLICK(func) wx__DECLARE_EVT0(wxEVT_AUX2_DCLICK, wxMouseEventHandler(func))
++#define EVT_MAGNIFY(func) wx__DECLARE_EVT0(wxEVT_MAGNIFY, wxMouseEventHandler(func))
+ 
+ // All mouse events
+ #define EVT_MOUSE_EVENTS(func) \
+@@ -4239,7 +4247,8 @@
+     EVT_MOTION(func) \
+     EVT_LEAVE_WINDOW(func) \
+     EVT_ENTER_WINDOW(func) \
+-    EVT_MOUSEWHEEL(func)
++    EVT_MOUSEWHEEL(func) \
++    EVT_MAGNIFY(func)
+ 
+ // Scrolling from wxWindow (sent to wxScrolledWindow)
+ #define EVT_SCROLLWIN_TOP(func) wx__DECLARE_EVT0(wxEVT_SCROLLWIN_TOP, wxScrollWinEventHandler(func))
+Index: src/common/event.cpp
+===================================================================
+--- src/common/event.cpp	(revision 78078)
++++ src/common/event.cpp	(working copy)
+@@ -207,6 +207,7 @@
+ wxDEFINE_EVENT( wxEVT_AUX2_DOWN, wxMouseEvent );
+ wxDEFINE_EVENT( wxEVT_AUX2_UP, wxMouseEvent );
+ wxDEFINE_EVENT( wxEVT_AUX2_DCLICK, wxMouseEvent );
++wxDEFINE_EVENT( wxEVT_MAGNIFY, wxMouseEvent );
+ 
+ // Character input event type
+ wxDEFINE_EVENT( wxEVT_CHAR, wxKeyEvent );
+@@ -568,6 +569,8 @@
+     m_wheelDelta = 0;
+     m_linesPerAction = 0;
+     m_columnsPerAction = 0;
++
++    m_magnification = 0.0f;
+ }
+ 
+ void wxMouseEvent::Assign(const wxMouseEvent& event)
+@@ -592,6 +595,8 @@
+     m_linesPerAction = event.m_linesPerAction;
+     m_columnsPerAction = event.m_columnsPerAction;
+     m_wheelAxis = event.m_wheelAxis;
++
++    m_magnification = event.m_magnification;
+ }
+ 
+ // return true if was a button dclick event
+Index: src/osx/cocoa/window.mm
+===================================================================
+--- src/osx/cocoa/window.mm	(revision 78078)
++++ src/osx/cocoa/window.mm	(working copy)
+@@ -728,6 +728,12 @@
+         case NSMouseMoved :
+             wxevent.SetEventType( wxEVT_MOTION ) ;
+             break;
++
++        case NSEventTypeMagnify:
++            wxevent.SetEventType( wxEVT_MAGNIFY );
++            wxevent.m_magnification = [nsEvent magnification];
++            break;
++
+         default :
+             break ;
+     }
+@@ -1749,6 +1755,10 @@
+     wxOSX_CLASS_ADD_METHOD(c, @selector(mouseEntered:), (IMP) wxOSX_mouseEvent, "v@:@" )
+     wxOSX_CLASS_ADD_METHOD(c, @selector(mouseExited:), (IMP) wxOSX_mouseEvent, "v@:@" )
+ 
++#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
++    wxOSX_CLASS_ADD_METHOD(c, @selector(magnifyWithEvent:), (IMP)wxOSX_mouseEvent, "v@:@")
++#endif
++
+     wxOSX_CLASS_ADD_METHOD(c, @selector(cursorUpdate:), (IMP) wxOSX_cursorUpdate, "v@:@" )
+ 
+     wxOSX_CLASS_ADD_METHOD(c, @selector(keyDown:), (IMP) wxOSX_keyEvent, "v@:@" )