Python wx.EVT_LEAVE_WINDOW Examples

def create_widget(self):
        if self.overlapped and self.parent._IS_GRIDBAG: return
        style = wx.FULL_REPAINT_ON_RESIZE
        if self.parent.CHILDREN in (-1, 1):  # e.g. Panel in a Frame
            size = self.parent.widget.GetClientSize()
        else:
            size = (20, 20)
        self.widget = wx.Window(self.parent_window.widget, -1, size=size, style=style)
        self.widget.SetBackgroundStyle(wx.BG_STYLE_CUSTOM)
        #self.widget.SetAutoLayout(True)
        self.widget.Bind(wx.EVT_PAINT, self.on_paint)
        self.widget.Bind(wx.EVT_ERASE_BACKGROUND, self.on_erase_background)
        self.widget.Bind(wx.EVT_RIGHT_DOWN, self.popup_menu)
        self.widget.Bind(wx.EVT_LEFT_DOWN, self.on_drop_widget)
        self.widget.Bind(wx.EVT_MIDDLE_DOWN, misc.exec_after(self.on_select_and_paste))
        self.widget.Bind(wx.EVT_ENTER_WINDOW, self.on_enter)
        self.widget.Bind(wx.EVT_LEAVE_WINDOW, self.on_leave)
        #self.widget.Bind(wx.EVT_CHAR_HOOK, misc.on_key_down_event)  # catch cursor keys   XXX still required? 

def destroy_widget(self, level):
        if self.widget is None: return
        if misc.currently_under_mouse is self.widget:
            misc.currently_under_mouse = None

        self.widget.Hide()

        if wx.VERSION_STRING!="2.8.12.0":
            # unbind events to prevent new created (and queued) events
            self.widget.Bind(wx.EVT_PAINT, None)
            self.widget.Bind(wx.EVT_RIGHT_DOWN, None)
            self.widget.Bind(wx.EVT_LEFT_DOWN, None)
            self.widget.Bind(wx.EVT_MIDDLE_DOWN, None)
            self.widget.Bind(wx.EVT_ENTER_WINDOW, None)
            self.widget.Bind(wx.EVT_LEAVE_WINDOW, None)
            self.widget.Bind(wx.EVT_KEY_DOWN, None)
        compat.DestroyLater(self.widget)
        self.widget = None

        if misc.focused_widget is self:
            misc.set_focused_widget(None) 

def bind_movement_binds(self, toggle):
        """Bind or unbind DragImage dragging bindings."""
        if toggle:
            self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
            self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
            self.Bind(wx.EVT_MOTION, self.OnMotion)
            self.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeaveWindow)
        else:
            self.Unbind(wx.EVT_LEFT_DOWN)
            self.Unbind(wx.EVT_LEFT_UP)
            self.Unbind(wx.EVT_MOTION)
            self.Unbind(wx.EVT_LEAVE_WINDOW) 

def __init__(self, parent, id=wx.ID_ANY, label="", pos=wx.DefaultPosition,
                 size=wx.DefaultSize, style=wx.NO_BORDER, validator=wx.DefaultValidator,
                 name="roundbutton"):
        """
        Default class constructor.

        :param `parent`: the L{RoundButton} parent;
        :param `id`: window identifier. A value of -1 indicates a default value;
        :param `label`: the button text label;
        :param `pos`: the control position. A value of (-1, -1) indicates a default position,
         chosen by either the windowing system or wxPython, depending on platform;
        :param `size`: the control size. A value of (-1, -1) indicates a default size,
         chosen by either the windowing system or wxPython, depending on platform;
        :param `style`: the button style (unused);
        :param `validator`: the validator associated to the button;
        :param `name`: the button name.
        """
        
        wx.PyControl.__init__(self, parent, id, pos, size, style, validator, name)

        self.Bind(wx.EVT_PAINT, self.OnPaint)
        self.Bind(wx.EVT_ERASE_BACKGROUND, lambda event: None)
        self.Bind(wx.EVT_SIZE, self.OnSize)
        self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
        self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
        self.Bind(wx.EVT_LEAVE_WINDOW, self.OnMouseLeave)
        self.Bind(wx.EVT_ENTER_WINDOW, self.OnMouseEnter)
        self.Bind(wx.EVT_SET_FOCUS, self.OnGainFocus)
        self.Bind(wx.EVT_KILL_FOCUS, self.OnLoseFocus)
        self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)
        self.Bind(wx.EVT_KEY_UP, self.OnKeyUp)

        self.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDown)

        self._mouseAction = None
        self._hasFocus = False
        self._buttonRadius = 0
        
        self.SetLabel(label)
        self.InheritAttributes()
        self.SetInitialSize(size) 

def OnMouseLeave(self, event):
        """
        Handles the ``wx.EVT_LEAVE_WINDOW`` event for L{RoundButton}.

        :param `event`: a `wx.MouseEvent` event to be processed.
        """

        self._mouseAction = None
        self.Refresh()
        event.Skip() 

def __init__(self, parent, application):
        style = wx.TR_DEFAULT_STYLE|wx.TR_HAS_VARIABLE_ROW_HEIGHT
        style |= wx.TR_EDIT_LABELS
        if wx.Platform == '__WXGTK__':    style |= wx.TR_NO_LINES|wx.TR_FULL_ROW_HIGHLIGHT
        elif wx.Platform == '__WXMAC__':  style &= ~wx.TR_ROW_LINES
        wx.TreeCtrl.__init__(self, parent, -1, style=style)
        self.cur_widget = None  # reference to the selected widget
        self.root = application
        image_list = wx.ImageList(21, 21)
        image_list.Add(wx.Bitmap(os.path.join(config.icons_path, 'application.xpm'), wx.BITMAP_TYPE_XPM))
        for w in WidgetTree.images:
            WidgetTree.images[w] = image_list.Add(misc.get_xpm_bitmap(WidgetTree.images[w]))
        self.AssignImageList(image_list)
        application.item = self.AddRoot(_('Application'), 0)
        self._SetItemData(application.item, application)
        self.skip_select = 0  # avoid an infinite loop on win32, as SelectItem fires an EVT_TREE_SEL_CHANGED event

        self.drop_target = clipboard.DropTarget(self, toplevel=True)
        self.SetDropTarget(self.drop_target)
        self._drag_ongoing = False
        self.auto_expand = True  # this control the automatic expansion of  nodes: it is set to False during xml loading
        self.Bind(wx.EVT_TREE_SEL_CHANGED, self.on_change_selection)
        self.Bind(wx.EVT_RIGHT_DOWN, self.popup_menu)
        self.Bind(wx.EVT_LEFT_DCLICK, self.on_left_dclick)
        self.Bind(wx.EVT_LEFT_DOWN, self.on_left_click) # allow direct placement of widgets
        self.Bind(wx.EVT_MENU, self.on_menu)  # for handling the selection of the first item
        self._popup_menu_widget = None  # the widget for the popup menu
        self.Bind(wx.EVT_TREE_BEGIN_DRAG, self.begin_drag)
        self.Bind(wx.EVT_LEAVE_WINDOW, self.on_leave_window)
        self.Bind(wx.EVT_MOUSE_EVENTS, self.on_mouse_events)

        self.Bind(wx.EVT_TREE_BEGIN_LABEL_EDIT, self.begin_edit_label)
        self.Bind(wx.EVT_TREE_END_LABEL_EDIT, self.end_edit_label)
        #self.Bind(wx.EVT_KEY_DOWN, misc.on_key_down_event)
        self.Bind(wx.EVT_KEY_DOWN, self.on_key_down_event)
        #self.Bind(wx.EVT_CHAR_HOOK, self.on_char)  # on wx 2.8 the event will not be delivered to the child
        self.Bind(wx.EVT_TREE_DELETE_ITEM, self.on_delete_item) 

def InitUI(self):
            
        img_color = wx.Image('Obrazy/furas.png')
        img_grey = img_color.ConvertToGreyscale(0.3, 0.3, 0.3)
        
        self.hbox = wx.BoxSizer(wx.HORIZONTAL)
        
        self.panel = wx.Panel(self)
        self.panel.SetSizer(self.hbox)

        self.bitmap_color = wx.Bitmap(img_color)
        self.bitmap_grey = wx.Bitmap(img_grey)

        #self.image = wx.StaticBitmap(self.panel, 1, self.bitmap_color)
        self.image = wx.BitmapButton(self.panel, 1, self.bitmap_color, style=wx.BORDER_NONE)
        # use 0 to not resize image to full window        
        self.hbox.Add(self.image, 0)

        # binds don't work on Linux for StaticBitmap
        # but they works for BitmapButton (but Button has border)
        self.image.Bind(wx.EVT_ENTER_WINDOW, self.OnOver)
        self.image.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeave)

        # set color to see how many space use it
        self.panel.SetBackgroundColour((0,255,0))
        # set color to see how many space use it
        self.image.SetBackgroundColour((255,0,0)) 

def GenerateMethodButtonSizer(self):
        normal_bt_font = wx.Font(faces["size"] // 3,    wx.DEFAULT, wx.NORMAL, wx.NORMAL, faceName=faces["helv"])
        mouseover_bt_font = wx.Font(faces["size"] // 3, wx.DEFAULT, wx.NORMAL, wx.NORMAL, faceName=faces["helv"], underline=True)

        msizer = wx.BoxSizer(wx.HORIZONTAL)

        for confnode_method in self.Controler.ConfNodeMethods:
            if "method" in confnode_method and confnode_method.get("shown", True):
                button = GenBitmapTextButton(self.Editor,
                                             bitmap=GetBitmap(confnode_method.get("bitmap", "Unknown")),
                                             label=confnode_method["name"],
                                             style=wx.NO_BORDER)
                button.SetFont(normal_bt_font)
                button.SetToolTipString(confnode_method["tooltip"])
                if confnode_method.get("push", False):
                    button.Bind(wx.EVT_LEFT_DOWN, self.GetButtonCallBackFunction(confnode_method["method"], True))
                else:
                    button.Bind(wx.EVT_BUTTON, self.GetButtonCallBackFunction(confnode_method["method"]), button)
                # a fancy underline on mouseover

                def setFontStyle(b, s):
                    def fn(event):
                        b.SetFont(s)
                        b.Refresh()
                        event.Skip()
                    return fn
                button.Bind(wx.EVT_ENTER_WINDOW, setFontStyle(button, mouseover_bt_font))
                button.Bind(wx.EVT_LEAVE_WINDOW, setFontStyle(button, normal_bt_font))
                # hack to force size to mini
                if not confnode_method.get("enabled", True):
                    button.Disable()
                msizer.AddWindow(button, flag=wx.ALIGN_CENTER)
        return msizer 

def __init__(self, parent, window, items=None):
        """
        Constructor
        @param parent: Parent wx.Window of DebugVariableText
        @param window: Reference to the Debug Variable Panel
        @param items: List of DebugVariableItem displayed by Viewer
        """
        DebugVariableViewer.__init__(self, window, items)

        wx.Panel.__init__(self, parent)
        # Set panel background colour
        self.SetBackgroundColour(wx.WHITE)
        # Define panel drop target
        self.SetDropTarget(DebugVariableTextDropTarget(self, window))

        # Bind events
        self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
        self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
        self.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDClick)
        self.Bind(wx.EVT_ENTER_WINDOW, self.OnEnter)
        self.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeave)
        self.Bind(wx.EVT_SIZE, self.OnResize)
        self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
        self.Bind(wx.EVT_PAINT, self.OnPaint)

        # Define panel min size for parent sizer layout
        self.SetMinSize(wx.Size(0, 25))

        # Add buttons to Viewer
        for bitmap, callback in [("force", self.OnForceButton),
                                 ("release", self.OnReleaseButton),
                                 ("delete_graph", self.OnCloseButton)]:
            self.Buttons.append(GraphButton(0, 0, bitmap, callback)) 

def __init__(self, parent, id, figure):
        """
        Initialise a FigureWx instance.

        - Initialise the FigureCanvasBase and wxPanel parents.
        - Set event handlers for:
          EVT_SIZE  (Resize event)
          EVT_PAINT (Paint event)
        """

        FigureCanvasBase.__init__(self, figure)
        # Set preferred window size hint - helps the sizer (if one is
        # connected)
        l, b, w, h = figure.bbox.bounds
        w = math.ceil(w)
        h = math.ceil(h)

        wx.Panel.__init__(self, parent, id, size=wx.Size(w, h))

        # Create the drawing bitmap
        self.bitmap = wx.Bitmap(w, h)
        DEBUG_MSG("__init__() - bitmap w:%d h:%d" % (w, h), 2, self)
        # TODO: Add support for 'point' inspection and plot navigation.
        self._isDrawn = False

        self.Bind(wx.EVT_SIZE, self._onSize)
        self.Bind(wx.EVT_PAINT, self._onPaint)
        self.Bind(wx.EVT_KEY_DOWN, self._onKeyDown)
        self.Bind(wx.EVT_KEY_UP, self._onKeyUp)
        self.Bind(wx.EVT_RIGHT_DOWN, self._onRightButtonDown)
        self.Bind(wx.EVT_RIGHT_DCLICK, self._onRightButtonDClick)
        self.Bind(wx.EVT_RIGHT_UP, self._onRightButtonUp)
        self.Bind(wx.EVT_MOUSEWHEEL, self._onMouseWheel)
        self.Bind(wx.EVT_LEFT_DOWN, self._onLeftButtonDown)
        self.Bind(wx.EVT_LEFT_DCLICK, self._onLeftButtonDClick)
        self.Bind(wx.EVT_LEFT_UP, self._onLeftButtonUp)
        self.Bind(wx.EVT_MOTION, self._onMotion)
        self.Bind(wx.EVT_LEAVE_WINDOW, self._onLeave)
        self.Bind(wx.EVT_ENTER_WINDOW, self._onEnter)
        # Add middle button events
        self.Bind(wx.EVT_MIDDLE_DOWN, self._onMiddleButtonDown)
        self.Bind(wx.EVT_MIDDLE_DCLICK, self._onMiddleButtonDClick)
        self.Bind(wx.EVT_MIDDLE_UP, self._onMiddleButtonUp)

        self.Bind(wx.EVT_MOUSE_CAPTURE_CHANGED, self._onCaptureLost)
        self.Bind(wx.EVT_MOUSE_CAPTURE_LOST, self._onCaptureLost)

        self.SetBackgroundStyle(wx.BG_STYLE_PAINT)  # Reduce flicker.
        self.SetBackgroundColour(wx.WHITE) 

def __init__(self, parent, id, figure):
        """
        Initialise a FigureWx instance.

        - Initialise the FigureCanvasBase and wxPanel parents.
        - Set event handlers for:
          EVT_SIZE  (Resize event)
          EVT_PAINT (Paint event)
        """

        FigureCanvasBase.__init__(self, figure)
        # Set preferred window size hint - helps the sizer (if one is
        # connected)
        l, b, w, h = figure.bbox.bounds
        w = math.ceil(w)
        h = math.ceil(h)

        wx.Panel.__init__(self, parent, id, size=wx.Size(w, h))

        # Create the drawing bitmap
        self.bitmap = wx.Bitmap(w, h)
        DEBUG_MSG("__init__() - bitmap w:%d h:%d" % (w, h), 2, self)
        # TODO: Add support for 'point' inspection and plot navigation.
        self._isDrawn = False

        self.Bind(wx.EVT_SIZE, self._onSize)
        self.Bind(wx.EVT_PAINT, self._onPaint)
        self.Bind(wx.EVT_KEY_DOWN, self._onKeyDown)
        self.Bind(wx.EVT_KEY_UP, self._onKeyUp)
        self.Bind(wx.EVT_RIGHT_DOWN, self._onRightButtonDown)
        self.Bind(wx.EVT_RIGHT_DCLICK, self._onRightButtonDClick)
        self.Bind(wx.EVT_RIGHT_UP, self._onRightButtonUp)
        self.Bind(wx.EVT_MOUSEWHEEL, self._onMouseWheel)
        self.Bind(wx.EVT_LEFT_DOWN, self._onLeftButtonDown)
        self.Bind(wx.EVT_LEFT_DCLICK, self._onLeftButtonDClick)
        self.Bind(wx.EVT_LEFT_UP, self._onLeftButtonUp)
        self.Bind(wx.EVT_MOTION, self._onMotion)
        self.Bind(wx.EVT_LEAVE_WINDOW, self._onLeave)
        self.Bind(wx.EVT_ENTER_WINDOW, self._onEnter)
        # Add middle button events
        self.Bind(wx.EVT_MIDDLE_DOWN, self._onMiddleButtonDown)
        self.Bind(wx.EVT_MIDDLE_DCLICK, self._onMiddleButtonDClick)
        self.Bind(wx.EVT_MIDDLE_UP, self._onMiddleButtonUp)

        self.Bind(wx.EVT_MOUSE_CAPTURE_CHANGED, self._onCaptureLost)
        self.Bind(wx.EVT_MOUSE_CAPTURE_LOST, self._onCaptureLost)

        self.SetBackgroundStyle(wx.BG_STYLE_PAINT)  # Reduce flicker.
        self.SetBackgroundColour(wx.WHITE) 

def __init__(self, *args, **kwargs):
        self._prev_bmp = None
        self._enter = False
        self._pause = False

        self.refresh_at_next = False
        self.latest_frame = None
        self.lock = threading.Lock()

        wx.Panel.__init__(self, *args, **kwargs)
        self.timer = wx.Timer(self)
        self.timer.Start(100)
        self.Bind(wx.EVT_TIMER, self.OnTimer, self.timer)

        self.GetTopLevelParent().Bind(EVT_INPUT_INITIALIZED,
                                      self.on_input_initialized)
        self.GetTopLevelParent().Bind(EVT_IKALOG_PAUSE, self.on_ikalog_pause)


        # Preview
        self.preview_size = (640, 360)
        # Preview image.
        self.preview_panel = wx.Panel(self, wx.ID_ANY, size=self.preview_size)
        self.preview_panel.Bind(wx.EVT_LEFT_UP, self.on_preview_click)
        self.preview_panel.Bind(wx.EVT_ENTER_WINDOW, self.on_enter_preview)
        self.preview_panel.Bind(wx.EVT_LEAVE_WINDOW, self.on_leave_preview)

        # Video Input
        self.video_input_title_text = wx.StaticText(
            self, wx.ID_ANY, _('Video Input'))
        self.video_input_source_text = wx.StaticText(self, wx.ID_ANY, '')

        self.input_file_panel = InputFilePanel(self, wx.ID_ANY)
        self.input_file_panel.Bind(EVT_INPUT_FILE_ADDED,
                                   self.on_input_file_added)

        self.show_input_file(False)

        self.video_input_source_sizer = wx.BoxSizer(wx.HORIZONTAL)
        self.video_input_source_sizer.Add(
            self.video_input_source_text, flag=wx.LEFT, border=10)
        self.video_input_source_sizer.Add(self.input_file_panel, proportion=1)

        # Sizer to set the width of the text box to 640.
        self.video_input_sizer = wx.BoxSizer(wx.VERTICAL)
        self.video_input_sizer.Add(self.video_input_title_text)
        self.video_input_sizer.Add(self.video_input_source_sizer,
                                   flag=wx.EXPAND | wx.ALL, border=5)
        self.video_input_sizer.Add((640, 5))

        # Top sizer
        self.top_sizer = wx.BoxSizer(wx.VERTICAL)
        self.top_sizer.Add(self.video_input_sizer, flag=wx.ALL, border=5)
        self.top_sizer.Add(self.preview_panel)
        self.SetSizer(self.top_sizer) 

def __init__(self, parent, id, figure):
        """
        Initialise a FigureWx instance.

        - Initialise the FigureCanvasBase and wxPanel parents.
        - Set event handlers for:
          EVT_SIZE  (Resize event)
          EVT_PAINT (Paint event)
        """

        FigureCanvasBase.__init__(self, figure)
        # Set preferred window size hint - helps the sizer (if one is
        # connected)
        l, b, w, h = figure.bbox.bounds
        w = math.ceil(w)
        h = math.ceil(h)

        wx.Panel.__init__(self, parent, id, size=wx.Size(w, h))

        # Create the drawing bitmap
        self.bitmap = wx.Bitmap(w, h)
        DEBUG_MSG("__init__() - bitmap w:%d h:%d" % (w, h), 2, self)
        # TODO: Add support for 'point' inspection and plot navigation.
        self._isDrawn = False

        self.Bind(wx.EVT_SIZE, self._onSize)
        self.Bind(wx.EVT_PAINT, self._onPaint)
        self.Bind(wx.EVT_KEY_DOWN, self._onKeyDown)
        self.Bind(wx.EVT_KEY_UP, self._onKeyUp)
        self.Bind(wx.EVT_RIGHT_DOWN, self._onRightButtonDown)
        self.Bind(wx.EVT_RIGHT_DCLICK, self._onRightButtonDClick)
        self.Bind(wx.EVT_RIGHT_UP, self._onRightButtonUp)
        self.Bind(wx.EVT_MOUSEWHEEL, self._onMouseWheel)
        self.Bind(wx.EVT_LEFT_DOWN, self._onLeftButtonDown)
        self.Bind(wx.EVT_LEFT_DCLICK, self._onLeftButtonDClick)
        self.Bind(wx.EVT_LEFT_UP, self._onLeftButtonUp)
        self.Bind(wx.EVT_MOTION, self._onMotion)
        self.Bind(wx.EVT_LEAVE_WINDOW, self._onLeave)
        self.Bind(wx.EVT_ENTER_WINDOW, self._onEnter)
        # Add middle button events
        self.Bind(wx.EVT_MIDDLE_DOWN, self._onMiddleButtonDown)
        self.Bind(wx.EVT_MIDDLE_DCLICK, self._onMiddleButtonDClick)
        self.Bind(wx.EVT_MIDDLE_UP, self._onMiddleButtonUp)

        self.Bind(wx.EVT_MOUSE_CAPTURE_CHANGED, self._onCaptureLost)
        self.Bind(wx.EVT_MOUSE_CAPTURE_LOST, self._onCaptureLost)

        self.SetBackgroundStyle(wx.BG_STYLE_PAINT)  # Reduce flicker.
        self.SetBackgroundColour(wx.WHITE) 

def __init__(self, parent, id, figure):
        """
        Initialise a FigureWx instance.

        - Initialise the FigureCanvasBase and wxPanel parents.
        - Set event handlers for:
          EVT_SIZE  (Resize event)
          EVT_PAINT (Paint event)
        """

        FigureCanvasBase.__init__(self, figure)
        # Set preferred window size hint - helps the sizer (if one is
        # connected)
        l, b, w, h = figure.bbox.bounds
        w = math.ceil(w)
        h = math.ceil(h)

        wx.Panel.__init__(self, parent, id, size=wx.Size(w, h))

        # Create the drawing bitmap
        self.bitmap = wx.Bitmap(w, h)
        DEBUG_MSG("__init__() - bitmap w:%d h:%d" % (w, h), 2, self)
        # TODO: Add support for 'point' inspection and plot navigation.
        self._isDrawn = False

        self.Bind(wx.EVT_SIZE, self._onSize)
        self.Bind(wx.EVT_PAINT, self._onPaint)
        self.Bind(wx.EVT_KEY_DOWN, self._onKeyDown)
        self.Bind(wx.EVT_KEY_UP, self._onKeyUp)
        self.Bind(wx.EVT_RIGHT_DOWN, self._onRightButtonDown)
        self.Bind(wx.EVT_RIGHT_DCLICK, self._onRightButtonDClick)
        self.Bind(wx.EVT_RIGHT_UP, self._onRightButtonUp)
        self.Bind(wx.EVT_MOUSEWHEEL, self._onMouseWheel)
        self.Bind(wx.EVT_LEFT_DOWN, self._onLeftButtonDown)
        self.Bind(wx.EVT_LEFT_DCLICK, self._onLeftButtonDClick)
        self.Bind(wx.EVT_LEFT_UP, self._onLeftButtonUp)
        self.Bind(wx.EVT_MOTION, self._onMotion)
        self.Bind(wx.EVT_LEAVE_WINDOW, self._onLeave)
        self.Bind(wx.EVT_ENTER_WINDOW, self._onEnter)
        # Add middle button events
        self.Bind(wx.EVT_MIDDLE_DOWN, self._onMiddleButtonDown)
        self.Bind(wx.EVT_MIDDLE_DCLICK, self._onMiddleButtonDClick)
        self.Bind(wx.EVT_MIDDLE_UP, self._onMiddleButtonUp)

        self.Bind(wx.EVT_MOUSE_CAPTURE_CHANGED, self._onCaptureLost)
        self.Bind(wx.EVT_MOUSE_CAPTURE_LOST, self._onCaptureLost)

        self.SetBackgroundStyle(wx.BG_STYLE_PAINT)  # Reduce flicker.
        self.SetBackgroundColour(wx.WHITE) 

def __init__(self, parent, id, figure):
        """
        Initialise a FigureWx instance.

        - Initialise the FigureCanvasBase and wxPanel parents.
        - Set event handlers for:
          EVT_SIZE  (Resize event)
          EVT_PAINT (Paint event)
        """

        FigureCanvasBase.__init__(self, figure)
        # Set preferred window size hint - helps the sizer (if one is
        # connected)
        l, b, w, h = figure.bbox.bounds
        w = math.ceil(w)
        h = math.ceil(h)

        wx.Panel.__init__(self, parent, id, size=wx.Size(w, h))

        # Create the drawing bitmap
        self.bitmap = wx.Bitmap(w, h)
        DEBUG_MSG("__init__() - bitmap w:%d h:%d" % (w, h), 2, self)
        # TODO: Add support for 'point' inspection and plot navigation.
        self._isDrawn = False

        self.Bind(wx.EVT_SIZE, self._onSize)
        self.Bind(wx.EVT_PAINT, self._onPaint)
        self.Bind(wx.EVT_KEY_DOWN, self._onKeyDown)
        self.Bind(wx.EVT_KEY_UP, self._onKeyUp)
        self.Bind(wx.EVT_RIGHT_DOWN, self._onRightButtonDown)
        self.Bind(wx.EVT_RIGHT_DCLICK, self._onRightButtonDClick)
        self.Bind(wx.EVT_RIGHT_UP, self._onRightButtonUp)
        self.Bind(wx.EVT_MOUSEWHEEL, self._onMouseWheel)
        self.Bind(wx.EVT_LEFT_DOWN, self._onLeftButtonDown)
        self.Bind(wx.EVT_LEFT_DCLICK, self._onLeftButtonDClick)
        self.Bind(wx.EVT_LEFT_UP, self._onLeftButtonUp)
        self.Bind(wx.EVT_MOTION, self._onMotion)
        self.Bind(wx.EVT_LEAVE_WINDOW, self._onLeave)
        self.Bind(wx.EVT_ENTER_WINDOW, self._onEnter)
        # Add middle button events
        self.Bind(wx.EVT_MIDDLE_DOWN, self._onMiddleButtonDown)
        self.Bind(wx.EVT_MIDDLE_DCLICK, self._onMiddleButtonDClick)
        self.Bind(wx.EVT_MIDDLE_UP, self._onMiddleButtonUp)

        self.Bind(wx.EVT_MOUSE_CAPTURE_CHANGED, self._onCaptureLost)
        self.Bind(wx.EVT_MOUSE_CAPTURE_LOST, self._onCaptureLost)

        self.SetBackgroundStyle(wx.BG_STYLE_PAINT)  # Reduce flicker.
        self.SetBackgroundColour(wx.WHITE)