ADD: PlateButton with toggle functionality

tatiana
1 parent 765497ba
Showing 2 changed files with 697 additions and 0 deletions Show diff stats
.gitattributes
invesalius/gui/widgets/platebtn.py
@@ -159,6 +159,7 @@ invesalius/gui/widgets/colourselect.py -text
 invesalius/gui/widgets/foldpanelbar.py -text
 invesalius/gui/widgets/gradient.py -text
 invesalius/gui/widgets/listctrl.py -text
+invesalius/gui/widgets/platebtn.py -text
 invesalius/gui/widgets/slice_menu.py -text
 invesalius/i18n.py -text
 invesalius/invesalius.py -text
@@ -0,0 +1,696 @@
+###############################################################################
+# Name: platebtn.py                                                           #
+# Purpose: PlateButton is a flat label button with support for bitmaps and    #
+#          drop menu.                                                         #
+# Author: Cody Precord <cprecord@editra.org>                                  #
+# Copyright: (c) 2007 Cody Precord <staff@editra.org>                         #
+# Licence: wxWindows Licence                                                  #
+###############################################################################
+
+"""
+Editra Control Library: PlateButton
+
+The PlateButton is a custom owner drawn flat button, that in many ways emulates
+the buttons found the bookmark bar of the Safari browser. It can be used as a 
+drop in replacement for wx.Button/wx.BitmapButton under most circumstances. It 
+also offers a wide range of options for customizing its appearance, a 
+description of each of the main style settings is listed below.
+
+Main Button Styles:
+Any combination of the following values may be passed to the constructor's style
+keyword parameter.
+
+PB_STYLE_DEFAULT:
+Creates a flat label button with rounded corners, the highlight for mouse over
+and press states is based off of the hightlight color from the systems current
+theme.
+
+PB_STYLE_GRADIENT:
+The highlight and press states are drawn with gradient using the current
+highlight color.
+
+PB_STYLE_SQUARE:
+Instead of the default rounded shape use a rectangular shaped button with
+square edges.
+
+PB_STYLE_NB:
+This style only has an effect on Windows but does not cause harm to use on the
+platforms. It should only be used when the control is shown on a panel or other
+window that has a non solid color for a background. i.e a gradient or image is
+painted on the background of the parent window. If used on a background with
+a solid color it may cause the control to loose its transparent appearance.
+
+PB_STYLE_DROPARROW:
+Add a drop button arrow to the button that will send a separate event when
+clicked on.
+
+Other attributes can be configured after the control has been created. The
+settings that are currently available are as follows:
+
+  - SetBitmap: Change/Add the bitmap at any time and the control will resize and
+               refresh to display it.
+  - SetLabelColor: Explicitly set text colors
+  - SetMenu: Set the button to have a popupmenu. When a menu is set a small drop
+             arrow will be drawn on the button that can then be clicked to show
+             a menu.
+  - SetPressColor: Use a custom highlight color
+
+
+Overridden Methods Inherited from PyControl:
+
+  - SetFont: Changing the font is one way to set the size of the button, by
+             default the control will inherit its font from its parent.
+
+  - SetWindowVariant: Setting the window variant will cause the control to
+                      resize to the corresponding variant size. However if the
+                      button is using a bitmap the bitmap will remain unchanged
+                      and only the font will be adjusted.
+
+Requirements:
+  - python2.4 or higher
+  - wxPython2.8 or higher
+
+"""
+
+__author__ = "Cody Precord <cprecord@editra.org>"
+__svnid__ = "$Id: platebtn.py 57713 2009-01-01 23:36:15Z CJP $"
+__revision__ = "$Revision: 57713 $"
+
+__all__ = ["PlateButton", "AdjustAlpha", "AdjustColor", "GetHighlightColor",
+           "PLATE_NORMAL", "PLATE_PRESSED", "PLATE_HIGHLIGHT", 
+           "PB_STYLE_DEFAULT", "PB_STYLE_GRADIENT", "PB_STYLE_SQUARE",
+           "PB_STYLE_NOBG", "PB_STYLE_DROPARROW",
+           "EVT_PLATEBTN_DROPARROW_PRESSED"]
+
+#-----------------------------------------------------------------------------#
+# Imports
+import wx
+import  wx.lib.newevent
+
+# Used on OSX to get access to carbon api constants
+if wx.Platform == '__WXMAC__':
+    import Carbon.Appearance
+
+#-----------------------------------------------------------------------------#
+# Button States
+PLATE_NORMAL = 0
+PLATE_PRESSED = 1
+PLATE_HIGHLIGHT = 2
+
+# Button Styles
+PB_STYLE_DEFAULT  = 1   # Normal Flat Background
+PB_STYLE_GRADIENT = 2   # Gradient Filled Background
+PB_STYLE_SQUARE   = 4   # Use square corners instead of rounded
+PB_STYLE_NOBG     = 8   # Usefull on Windows to get a transparent appearance
+                        # when the control is shown on a non solid background
+PB_STYLE_DROPARROW = 16 # Draw drop arrow and fire EVT_PLATEBTN_DROPRROW_PRESSED event
+PB_STYLE_TOGGLE = 32    # Toggle button (stay pressed if not left-clicked again)
+
+PlateBtnDropArrowPressed, EVT_PLATEBTN_DROPARROW_PRESSED = wx.lib.newevent.NewEvent()
+
+#-----------------------------------------------------------------------------#
+# Utility Functions, moved to their own module
+
+from wx.lib.colourutils import *
+
+#-----------------------------------------------------------------------------#
+
+class PlateButton(wx.PyControl):
+    """PlateButton is a custom type of flat button with support for
+    displaying bitmaps and having an attached dropdown menu.
+
+    """
+    def __init__(self, parent, id_=wx.ID_ANY, label='', bmp=None, 
+                 pos=wx.DefaultPosition, size=wx.DefaultSize,
+                 style=PB_STYLE_DEFAULT, name=wx.ButtonNameStr):
+        """Create a PlateButton
+        @keyword label: Buttons label text
+        @keyword bmp: Buttons bitmap
+        @keyword style: Button style
+
+        """
+        wx.PyControl.__init__(self, parent, id_, pos, size,
+                              wx.BORDER_NONE|wx.TRANSPARENT_WINDOW, name=name)
+
+        # Attributes
+        self.InheritAttributes()
+        self._bmp = dict(enable=bmp)
+        if bmp is not None:
+            img = bmp.ConvertToImage()
+            img = img.ConvertToGreyscale(.795, .073, .026) #(.634, .224, .143)
+            self._bmp['disable'] = img.ConvertToBitmap()
+        else:
+            self._bmp['disable'] = None
+
+        self._menu = None
+        self.SetLabel(label)
+        self._style = style
+        self._state = dict(pre=PLATE_NORMAL, cur=PLATE_NORMAL)
+        self._color = self.__InitColors()
+        self._pressed = False
+
+        # Setup Initial Size
+        self.SetInitialSize()
+
+        # Event Handlers
+        self.Bind(wx.EVT_PAINT, lambda evt: self.__DrawButton())
+        self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnErase)
+        self.Bind(wx.EVT_SET_FOCUS, self.OnFocus)
+        self.Bind(wx.EVT_KILL_FOCUS, self.OnKillFocus)
+
+        # Mouse Events
+        self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
+        self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
+        self.Bind(wx.EVT_LEFT_DCLICK, lambda evt: self.ToggleState())
+        self.Bind(wx.EVT_ENTER_WINDOW,
+                  lambda evt: self.SetState(PLATE_HIGHLIGHT))
+        self.Bind(wx.EVT_LEAVE_WINDOW,
+                  lambda evt: wx.CallLater(80, self.__LeaveWindow))
+
+        # Other events
+        self.Bind(wx.EVT_KEY_UP, self.OnKeyUp)
+        self.Bind(wx.EVT_CONTEXT_MENU, lambda evt: self.ShowMenu())
+
+    def __DrawBitmap(self, gc):
+        """Draw the bitmap if one has been set
+        @param gc: GCDC to draw with
+        @return: x cordinate to draw text at
+
+        """
+        if self.IsEnabled():
+            bmp = self._bmp['enable']
+        else:
+            bmp = self._bmp['disable']
+
+        if bmp is not None and bmp.IsOk():
+            bw, bh = bmp.GetSize()
+            ypos = (self.GetSize()[1] - bh) / 2
+            gc.DrawBitmap(bmp, 6, ypos, bmp.GetMask() != None)
+            return bw + 6
+        else:
+            return 6
+
+    def __DrawDropArrow(self, gc, xpos, ypos):
+        """Draw a drop arrow if needed and restore pen/brush after finished
+        @param gc: GCDC to draw with
+        @param xpos: x cord to start at
+        @param ypos: y cord to start at
+
+        """
+        if self._menu is not None or self._style & PB_STYLE_DROPARROW:
+            # Positioning needs a little help on Windows
+            if wx.Platform == '__WXMSW__':
+                xpos -= 2
+            tripoints = [(xpos, ypos), (xpos + 6, ypos), (xpos + 3, ypos + 5)]
+            brush_b = gc.GetBrush()
+            pen_b = gc.GetPen()
+            gc.SetPen(wx.TRANSPARENT_PEN)
+            gc.SetBrush(wx.Brush(gc.GetTextForeground()))
+            gc.DrawPolygon(tripoints)
+            gc.SetBrush(brush_b)
+            gc.SetPen(pen_b)
+        else:
+            pass
+
+    def __DrawHighlight(self, gc, width, height):
+        """Draw the main highlight/pressed state
+        @param gc: GCDC to draw with
+        @param width: width of highlight
+        @param height: height of highlight
+
+        """
+        if self._state['cur'] == PLATE_PRESSED:
+            color = self._color['press']
+        else:
+            color = self._color['hlight']
+
+        if self._style & PB_STYLE_SQUARE:
+            rad = 0
+        else:
+            rad = (height - 3) / 2
+
+        if self._style & PB_STYLE_GRADIENT:
+            gc.SetBrush(wx.TRANSPARENT_BRUSH)
+            rgc = gc.GetGraphicsContext()
+            brush = rgc.CreateLinearGradientBrush(0, 1, 0, height,
+                                                  color, AdjustAlpha(color, 55))
+            rgc.SetBrush(brush)
+        else:
+            gc.SetBrush(wx.Brush(color))
+
+        gc.DrawRoundedRectangle(1, 1, width - 2, height - 2, rad)
+
+    def __PostEvent(self):
+        """Post a button event to parent of this control"""
+        bevt = wx.CommandEvent(wx.wxEVT_COMMAND_BUTTON_CLICKED, self.GetId())
+        bevt.SetEventObject(self)
+        bevt.SetString(self.GetLabel())
+        self.GetEventHandler().ProcessEvent(bevt)
+
+    def __DrawButton(self):
+        """Draw the button"""
+        # TODO using a buffered paintdc on windows with the nobg style
+        #      causes lots of weird drawing. So currently the use of a
+        #      buffered dc is dissabled for this style.
+        if PB_STYLE_NOBG & self._style:
+            dc = wx.PaintDC(self)
+        else:
+            dc = wx.AutoBufferedPaintDCFactory(self)
+
+        gc = wx.GCDC(dc)
+
+        # Setup
+        dc.SetBrush(wx.TRANSPARENT_BRUSH)
+        gc.SetBrush(wx.TRANSPARENT_BRUSH)
+        gc.SetFont(self.GetFont())
+        gc.SetBackgroundMode(wx.TRANSPARENT)
+
+        # The background needs some help to look transparent on
+        # on Gtk and Windows
+        if wx.Platform in ['__WXGTK__', '__WXMSW__']:
+            gc.SetBackground(self.GetBackgroundBrush(gc))
+            gc.Clear()
+
+        # Calc Object Positions
+        width, height = self.GetSize()
+        tw, th = gc.GetTextExtent(self.GetLabel())
+        txt_y = max((height - th) / 2, 1)
+
+        if self._state['cur'] == PLATE_HIGHLIGHT:
+            gc.SetTextForeground(self._color['htxt'])
+            gc.SetPen(wx.TRANSPARENT_PEN)
+            self.__DrawHighlight(gc, width, height)
+
+        elif self._state['cur'] == PLATE_PRESSED:
+            gc.SetTextForeground(self._color['htxt'])
+            if wx.Platform == '__WXMAC__':
+                brush = wx.Brush(wx.BLACK)
+                brush.MacSetTheme(Carbon.Appearance.kThemeBrushFocusHighlight)
+                pen = wx.Pen(brush.GetColour(), 1, wx.SOLID)
+            else:
+                pen = wx.Pen(AdjustColour(self._color['press'], -80, 220), 1)
+            gc.SetPen(pen)
+
+            self.__DrawHighlight(gc, width, height)
+            txt_x = self.__DrawBitmap(gc)
+            gc.DrawText(self.GetLabel(), txt_x + 2, txt_y)
+            self.__DrawDropArrow(gc, txt_x + tw + 6, (height / 2) - 2)
+
+        else:
+            if self.IsEnabled():
+                gc.SetTextForeground(self.GetForegroundColour())
+            else:
+                txt_c = wx.SystemSettings.GetColour(wx.SYS_COLOUR_GRAYTEXT)
+                gc.SetTextForeground(txt_c)
+
+        # Draw bitmap and text
+        if self._state['cur'] != PLATE_PRESSED:
+            txt_x = self.__DrawBitmap(gc)
+            gc.DrawText(self.GetLabel(), txt_x + 2, txt_y)
+            self.__DrawDropArrow(gc, txt_x + tw + 6, (height / 2) - 2)
+
+    def __InitColors(self):
+        """Initialize the default colors"""
+        color = GetHighlightColour()
+        pcolor = AdjustColour(color, -12)
+        colors = dict(default=True,
+                      hlight=color, 
+                      press=pcolor,
+                      htxt=BestLabelColour(self.GetForegroundColour()))
+        return colors
+
+    def __LeaveWindow(self):
+        if (self._style & PB_STYLE_TOGGLE) and self._pressed:
+            self.SetState(PLATE_PRESSED) 
+        else:
+            self.SetState(PLATE_NORMAL)
+
+    #---- End Private Member Function ----#
+
+    #---- Public Member Functions ----#
+    def AcceptsFocus(self):
+        """Can this window have the focus?"""
+        return self.IsEnabled()
+
+    @property
+    def BitmapDisabled(self):
+        """Property for accessing the bitmap for the disabled state"""
+        return self._bmp['disable']
+
+    @property
+    def BitmapLabel(self):
+        """Property for accessing the default bitmap"""
+        return self._bmp['enable']
+
+    # Aliases
+    BitmapFocus = BitmapLabel
+    BitmapHover = BitmapLabel
+    BitmapSelected = BitmapLabel
+
+    def Disable(self):
+        """Disable the control"""
+        wx.PyControl.Disable(self)
+        self.Refresh()
+
+    def DoGetBestSize(self):
+        """Calculate the best size of the button
+        @return: wx.Size
+
+        """
+        width = 4
+        height = 6
+        if self.GetLabel():
+            lsize = self.GetTextExtent(self.GetLabel())
+            width += lsize[0]
+            height += lsize[1]
+            
+        if self._bmp['enable'] is not None:
+            bsize = self._bmp['enable'].GetSize()
+            width += (bsize[0] + 10)
+            if height <= bsize[1]:
+                height = bsize[1] + 6
+            else:
+                height += 3
+        else:
+            width += 10
+
+        if self._menu is not None or self._style & PB_STYLE_DROPARROW:
+            width += 12
+
+        best = wx.Size(width, height)
+        self.CacheBestSize(best)
+        return best
+
+    def Enable(self, enable=True):
+        """Enable/Disable the control"""
+        wx.PyControl.Enable(self, enable)
+        self.Refresh()
+
+    def GetBackgroundBrush(self, dc):
+        """Get the brush for drawing the background of the button
+        @return: wx.Brush
+        @note: used internally when on gtk
+
+        """
+        if wx.Platform == '__WXMAC__' or self._style & PB_STYLE_NOBG:
+            return wx.TRANSPARENT_BRUSH
+
+        bkgrd = self.GetBackgroundColour()
+        brush = wx.Brush(bkgrd, wx.SOLID)
+        my_attr = self.GetDefaultAttributes()
+        p_attr = self.GetParent().GetDefaultAttributes()
+        my_def = bkgrd == my_attr.colBg
+        p_def = self.GetParent().GetBackgroundColour() == p_attr.colBg
+        if my_def and not p_def:
+            bkgrd = self.GetParent().GetBackgroundColour()
+            brush = wx.Brush(bkgrd, wx.SOLID)
+        return brush
+
+    def GetBitmapDisabled(self):
+        """Get the bitmap of the disable state
+        @return: wx.Bitmap or None
+
+        """
+        return self._bmp['disable']
+
+    def GetBitmapLabel(self):
+        """Get the label bitmap
+        @return: wx.Bitmap or None
+
+        """
+        return self._bmp['enable']
+
+    # GetBitmap Aliases for BitmapButton api
+    GetBitmapFocus = GetBitmapLabel
+    GetBitmapHover = GetBitmapLabel
+    
+    # Alias for GetLabel
+    GetLabelText = wx.PyControl.GetLabel
+
+    def GetMenu(self):
+        """Return the menu associated with this button or None if no
+        menu is associated with it.
+
+        """
+        return getattr(self, '_menu', None)
+
+    def HasTransparentBackground(self):
+        """Override setting of background fill"""
+        return True
+
+    def IsPressed(self):
+        """Return if button is pressed (PB_STYLE_TOGGLE)"""
+        return self._pressed
+
+    @property
+    def LabelText(self):
+        """Property for getting the label of the button"""
+        return self.GetLabel()
+
+    #---- Event Handlers ----#
+
+    def OnErase(self, evt):
+        """Trap the erase event to keep the background transparent
+        on windows.
+        @param evt: wx.EVT_ERASE_BACKGROUND
+
+        """
+        pass
+
+    def OnFocus(self, evt):
+        """Set the visual focus state if need be"""
+        if self._state['cur'] == PLATE_NORMAL:
+            self.SetState(PLATE_HIGHLIGHT)
+
+    def OnKeyUp(self, evt):
+        """Execute a single button press action when the Return key is pressed
+        and this control has the focus.
+        @param evt: wx.EVT_KEY_UP
+
+        """
+        if evt.GetKeyCode() == wx.WXK_SPACE:
+            self.SetState(PLATE_PRESSED)
+            self.__PostEvent()
+            wx.CallLater(100, self.SetState, PLATE_HIGHLIGHT)
+        else:
+            evt.Skip()
+
+    def OnKillFocus(self, evt):
+        """Set the visual state back to normal when focus is lost
+        unless the control is currently in a pressed state.
+
+        """
+        # Note: this delay needs to be at least as much as the on in the KeyUp
+        #       handler to prevent ghost highlighting from happening when
+        #       quickly changing focus and activating buttons
+        if self._state['cur'] != PLATE_PRESSED:
+            self.SetState(PLATE_NORMAL)
+
+    def OnLeftDown(self, evt):
+        """Sets the pressed state and depending on the click position will
+        show the popup menu if one has been set.
+
+        """
+        pos = evt.GetPositionTuple()
+        self.SetState(PLATE_PRESSED)
+        size = self.GetSizeTuple()
+        if pos[0] >= size[0] - 16:
+            if self._menu is not None:
+                self.ShowMenu()
+            elif self._style & PB_STYLE_DROPARROW:
+                event = PlateBtnDropArrowPressed()
+                event.SetEventObject(self)
+                wx.PostEvent(self, event)
+
+        if (self._style & PB_STYLE_TOGGLE):
+            self._pressed = not self._pressed
+ 
+        self.SetFocus()
+            
+    def OnLeftUp(self, evt):
+        """Post a button event if the control was previously in a
+        pressed state.
+        @param evt: wx.MouseEvent
+
+        """
+        if self._state['cur'] == PLATE_PRESSED:
+            pos = evt.GetPositionTuple()
+            size = self.GetSizeTuple()
+            if not (self._style & PB_STYLE_DROPARROW and pos[0] >= size[0] - 16):
+                self.__PostEvent()
+
+        if self._pressed:
+            self.SetState(PLATE_PRESSED)
+        else:
+            self.SetState(PLATE_HIGHLIGHT)
+
+    def OnMenuClose(self, evt):
+        """Refresh the control to a proper state after the menu has been
+        dismissed.
+        @param evt: wx.EVT_MENU_CLOSE
+
+        """
+        mpos = wx.GetMousePosition()
+        if self.HitTest(self.ScreenToClient(mpos)) != wx.HT_WINDOW_OUTSIDE:
+            self.SetState(PLATE_HIGHLIGHT)
+        else:
+            self.SetState(PLATE_NORMAL)
+        evt.Skip()
+
+    #---- End Event Handlers ----#
+
+    def SetBitmap(self, bmp):
+        """Set the bitmap displayed in the button
+        @param bmp: wx.Bitmap
+
+        """
+        self._bmp['enable'] = bmp
+        img = bmp.ConvertToImage()
+        img = img.ConvertToGreyscale(.795, .073, .026) #(.634, .224, .143)
+        self._bmp['disable'] = img.ConvertToBitmap()
+        self.InvalidateBestSize()
+
+    def SetBitmapDisabled(self, bmp):
+        """Set the bitmap for the disabled state
+        @param bmp: wx.Bitmap
+
+        """
+        self._bmp['disable'] = bmp
+
+    # Aliases for SetBitmap* functions from BitmapButton
+    SetBitmapFocus = SetBitmap
+    SetBitmapHover = SetBitmap
+    SetBitmapLabel = SetBitmap
+    SetBitmapSelected = SetBitmap
+
+    def SetFocus(self):
+        """Set this control to have the focus"""
+        if self._state['cur'] != PLATE_PRESSED:
+            self.SetState(PLATE_HIGHLIGHT)
+        wx.PyControl.SetFocus(self)
+
+    def SetFont(self, font):
+        """Adjust size of control when font changes"""
+        wx.PyControl.SetFont(self, font)
+        self.InvalidateBestSize()
+
+    def SetLabel(self, label):
+        """Set the label of the button
+        @param label: lable string
+
+        """
+        wx.PyControl.SetLabel(self, label)
+        self.InvalidateBestSize()
+
+    def SetLabelColor(self, normal, hlight=wx.NullColour):
+        """Set the color of the label. The optimal label color is usually
+        automatically selected depending on the button color. In some
+        cases the colors that are choosen may not be optimal.
+        
+        The normal state must be specified, if the other two params are left
+        Null they will be automatically guessed based on the normal color. To
+        prevent this automatic color choices from happening either specify
+        a color or None for the other params.
+
+        @param normal: Label color for normal state
+        @keyword hlight: Color for when mouse is hovering over
+
+        """
+        self._color['default'] = False
+        self.SetForegroundColour(normal)
+
+        if hlight is not None:
+            if hlight.IsOk():
+                self._color['htxt'] = hlight
+            else:
+                self._color['htxt'] = BestLabelColour(normal)
+
+        if wx.Platform == '__WXMSW__':
+            self.GetParent().RefreshRect(self.GetRect(), False)
+        else:
+            self.Refresh()
+
+    def SetMenu(self, menu):
+        """Set the menu that can be shown when clicking on the
+        drop arrow of the button.
+        @param menu: wxMenu to use as a PopupMenu
+        @note: Arrow is not drawn unless a menu is set
+
+        """
+        if self._menu is not None:
+            self.Unbind(wx.EVT_MENU_CLOSE)
+
+        self._menu = menu
+        self.Bind(wx.EVT_MENU_CLOSE, self.OnMenuClose)
+        self.InvalidateBestSize()
+
+    def SetPressColor(self, color):
+        """Set the color used for highlighting the pressed state
+        @param color: wx.Color
+        @note: also resets all text colours as necessary
+
+        """
+        self._color['default'] = False
+        if color.Alpha() == 255:
+            self._color['hlight'] = AdjustAlpha(color, 200)
+        else:
+            self._color['hlight'] = color
+        self._color['press'] = AdjustColour(color, -10, 160)
+        self._color['htxt'] = BestLabelColour(self._color['hlight'])
+        self.Refresh()
+
+    def SetState(self, state):
+        """Manually set the state of the button
+        @param state: one of the PLATE_* values
+        @note: the state may be altered by mouse actions
+
+        """
+        self._state['pre'] = self._state['cur']
+        self._state['cur'] = state
+        if wx.Platform == '__WXMSW__':
+            self.GetParent().RefreshRect(self.GetRect(), False)
+        else:
+            self.Refresh()
+
+    def SetWindowStyle(self, style):
+        """Sets the window style bytes, the updates take place
+        immediately no need to call refresh afterwards.
+        @param style: bitmask of PB_STYLE_* values
+
+        """
+        self._style = style
+        self.Refresh()
+
+    def SetWindowVariant(self, variant):
+        """Set the variant/font size of this control"""
+        wx.PyControl.SetWindowVariant(self, variant)
+        self.InvalidateBestSize()
+
+    def ShouldInheritColours(self):
+        """Overridden base class virtual. If the parent has non-default
+        colours then we want this control to inherit them.
+
+        """
+        return True
+
+    def ShowMenu(self):
+        """Show the dropdown menu if one is associated with this control"""
+        if self._menu is not None:
+            size = self.GetSizeTuple()
+            adj = wx.Platform == '__WXMAC__' and 3 or 0
+
+            if self._style & PB_STYLE_SQUARE:
+                xpos = 1
+            else:
+                xpos = size[1] / 2
+
+            self.PopupMenu(self._menu, (xpos, size[1] + adj))
+
+    def ToggleState(self):
+        """Toggle button state"""
+        if self._state['cur'] != PLATE_PRESSED:
+            self.SetState(PLATE_PRESSED)
+        else:
+            self.SetState(PLATE_HIGHLIGHT)
+
+    #---- End Public Member Functions ----#
...	...	@@ -159,6 +159,7 @@ invesalius/gui/widgets/colourselect.py -text
159	159	invesalius/gui/widgets/foldpanelbar.py -text
160	160	invesalius/gui/widgets/gradient.py -text
161	161	invesalius/gui/widgets/listctrl.py -text
	162	+invesalius/gui/widgets/platebtn.py -text
162	163	invesalius/gui/widgets/slice_menu.py -text
163	164	invesalius/i18n.py -text
164	165	invesalius/invesalius.py -text
...	...