Allowing mouse dragging with three-button mice.

svn path=/trunk/matplotlib/; revision=7627

Author: mdehoon

src/_macosx.m

@@ -349,8 +349,10 @@ - (void)mouseDragged:(NSEvent*)event;
 - (void)mouseMoved:(NSEvent*)event;
 - (void)rightMouseDown:(NSEvent*)event;
 - (void)rightMouseUp:(NSEvent*)event;
+- (void)rightMouseDragged:(NSEvent*)event;
 - (void)otherMouseDown:(NSEvent*)event;
 - (void)otherMouseUp:(NSEvent*)event;
+- (void)otherMouseDragged:(NSEvent*)event;
 - (void)setRubberband:(NSRect)rect;
 - (void)removeRubberband;
 - (const char*)convertKeyEvent:(NSEvent*)event;
@@ -4744,6 +4746,23 @@ - (void)rightMouseUp:(NSEvent *)event
     PyGILState_Release(gstate);
 }
 
+- (void)rightMouseDragged:(NSEvent *)event
+{
+    int x, y;
+    NSPoint location = [event locationInWindow];
+    location = [self convertPoint: location fromView: nil];
+    x = location.x;
+    y = location.y;
+    PyGILState_STATE gstate = PyGILState_Ensure();
+    PyObject* result = PyObject_CallMethod(canvas, "motion_notify_event", "ii", x, y);
+    if(result)
+        Py_DECREF(result);
+    else
+        PyErr_Print();
+
+    PyGILState_Release(gstate);
+}
+
 - (void)otherMouseDown:(NSEvent *)event
 {
     int x, y;
@@ -4784,6 +4803,23 @@ - (void)otherMouseUp:(NSEvent *)event
     PyGILState_Release(gstate);
 }
 
+- (void)otherMouseDragged:(NSEvent *)event
+{
+    int x, y;
+    NSPoint location = [event locationInWindow];
+    location = [self convertPoint: location fromView: nil];
+    x = location.x;
+    y = location.y;
+    PyGILState_STATE gstate = PyGILState_Ensure();
+    PyObject* result = PyObject_CallMethod(canvas, "motion_notify_event", "ii", x, y);
+    if(result)
+        Py_DECREF(result);
+    else
+        PyErr_Print();
+
+    PyGILState_Release(gstate);
+}
+
 - (void)setRubberband:(NSRect)rect
 {
     if (!NSIsEmptyRect(rubberband)) [self setNeedsDisplayInRect: rubberband];