From 4df1d0612d7041ac2ecc27173483a79dc32b9bec Mon Sep 17 00:00:00 2001
From: Thiago Franco de Moraes <totonixsame@gmail.com>
Date: Tue, 26 Mar 2013 09:12:00 -0300
Subject: [PATCH] Created a new interactor style to handle the Zoom camera

---
 invesalius/data/styles.py       | 26 ++++++++++++++++++++++++++
 invesalius/data/viewer_slice.py |  7 +++++++
 2 files changed, 33 insertions(+), 0 deletions(-)

diff --git a/invesalius/data/styles.py b/invesalius/data/styles.py
index 94af109..f06f5d7 100644
--- a/invesalius/data/styles.py
+++ b/invesalius/data/styles.py
@@ -340,6 +340,32 @@ class SpinInteractorStyle(RightZoomInteractorStyle):
         iren.Render()
 
 
+class ZoomInteractorStyle(RightZoomInteractorStyle):
+    """
+    Interactor style responsible for zoom with movement of the mouse and the
+    left mouse button clicked.
+    """
+    def __init__(self, viewer):
+        RightZoomInteractorStyle.__init__(self)
+        
+        self.viewer = viewer
+
+        self.AddObserver("MouseMoveEvent", self.OnZoomMoveLeft)
+        self.viewer.interactor.Bind(wx.EVT_LEFT_DCLICK, self.OnUnZoom)
+
+    def OnZoomMoveLeft(self, obj, evt):
+        if self.left_pressed:
+            obj.Dolly()
+            obj.OnRightButtonDown()
+
+    def OnUnZoom(self, evt):
+        mouse_x, mouse_y = self.viewer.interactor.GetLastEventPosition()
+        ren = self.viewer.interactor.FindPokedRenderer(mouse_x, mouse_y)
+        #slice_data = self.get_slice_data(ren)
+        ren.ResetCamera()
+        ren.ResetCameraClippingRange()
+        #self.Reposition(slice_data)
+        self.viewer.interactor.Render()
 
 
 class ViewerStyle:
diff --git a/invesalius/data/viewer_slice.py b/invesalius/data/viewer_slice.py
index 071ae6a..b7a177e 100755
--- a/invesalius/data/viewer_slice.py
+++ b/invesalius/data/viewer_slice.py
@@ -231,6 +231,13 @@ class Viewer(wx.Panel):
             self.interactor.SetInteractorStyle(style)
             self.interactor.Render()
 
+        elif state == const.STATE_ZOOM:
+            style = styles.ZoomInteractorStyle(self)
+
+            self.style = style
+            self.interactor.SetInteractorStyle(style)
+            self.interactor.Render()
+
         else:
             self.state = state
             action = {
--
libgit2 0.21.2