# HG changeset patch
# User Laurent Bessard
# Date 1369412942 -7200
# Node ID 9cc1a3fa96199cbe830f7cbc909cbd1f78425de6
# Parent  ad09b4a755ce4dfb1ff27b556923d19066eeed33
Add support for moving cursor in Debug Graphs using arrow keys

diff -r ad09b4a755ce -r 9cc1a3fa9619 controls/DebugVariablePanel.py
--- a/controls/DebugVariablePanel.py	Fri May 24 16:29:57 2013 +0200
+++ b/controls/DebugVariablePanel.py	Fri May 24 18:29:02 2013 +0200
@@ -812,6 +812,7 @@
             
             FigureCanvas.__init__(self, parent, -1, self.Figure)
             self.SetBackgroundColour(wx.WHITE)
+            self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)
             self.Bind(wx.EVT_ENTER_WINDOW, self.OnEnter)
             self.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeave)
             self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
@@ -1160,6 +1161,18 @@
                 self.ParentWindow.ForceRefresh()
             DebugVariableViewer.OnLeave(self, event)
         
+        KEY_CURSOR_INCREMENT = {
+            wx.WXK_LEFT: -1,
+            wx.WXK_RIGHT: 1,
+            wx.WXK_UP: -10,
+            wx.WXK_DOWN: 10}
+        def OnKeyDown(self, event):
+            if self.CursorTick is not None:
+                self.ParentWindow.MoveCursorTick(
+                    self.KEY_CURSOR_INCREMENT.get(
+                      event.GetKeyCode(), 0))
+            event.Skip()
+        
         def HandleCursorMove(self, event):
             start_tick, end_tick = self.ParentWindow.GetRange()
             cursor_tick = None
@@ -1621,6 +1634,20 @@
         self.Fixed = True
         self.UpdateCursorTick() 
     
+    def MoveCursorTick(self, move):
+        if self.CursorTick is not None:
+            cursor_tick = max(self.Ticks[0], 
+                          min(self.CursorTick + move, 
+                              self.Ticks[-1]))
+            self.CursorTick = self.Ticks[
+                numpy.argmin(numpy.abs(self.Ticks - cursor_tick))]
+            self.StartTick = max(self.Ticks[
+                                numpy.argmin(numpy.abs(self.Ticks - 
+                                        self.CursorTick + self.CurrentRange))],
+                             min(self.StartTick, self.CursorTick))
+            self.RefreshCanvasPosition()
+            self.UpdateCursorTick() 
+            
     def ResetCursorTick(self):
         self.CursorTick = None
         self.UpdateCursorTick()