wxPython popup / tooltip on a wx.DrawRectangle? - popup

Question

In the code below, DrawRect1 and DrawRect2 represent a simplified version of functions that draw multiple shapes on screen.
I want to display some supplementary information if I hover over any of the drawn rectangles (similar to the way a tooltip works). But I need to generate that display information from a function rather than static definition.
Given I know the coords of the draw rectangle, can I either create another type of object with the same coords, or link a hover action to each drawnrectangle, so that I could call a function defined something like this ? :
EDIT: I guess I need a object I can bind a wx.EVT_ENTER_WINDOW event to, that I can create at the same time as dc.DrawRectangle ? Or can I bind this handler to the panel and use x,y position to try and match to a list of drawn rectangle coords ?
The closest thing I could find on SO was this old question, wxpython tooltip at specific coordinates but it wasn't a comprehensive answer.
import wx
class Mywin(wx.Frame):
def __init__(self, parent, title):
super(Mywin, self).__init__(parent, title=title, size=(500, 300))
self.InitUI()
def InitUI(self):
self.panel = wx.Panel(self)
self.panel.SetBackgroundColour(wx.Colour('RED'))
self.Centre()
self.Show(True)
menuBar = wx.MenuBar()
RectangleButton = wx.Menu()
Item1 = RectangleButton.Append(wx.ID_ANY, 'Rectangle 1')
Item2 = RectangleButton.Append(wx.ID_ANY, 'Rectangle 2')
menuBar.Append(RectangleButton, 'Rectangles')
self.SetMenuBar(menuBar)
self.Bind(wx.EVT_MENU, self.DrawRect1, Item1)
self.Bind(wx.EVT_MENU, self.DrawRect2, Item2)
def DrawRect1(self, e):
self.panel.SetBackgroundColour(wx.Colour('BLUE'))
self.Refresh()
self.Update()
self.dc = wx.ClientDC(self.panel)
self.dc.SetBrush(wx.Brush(wx.Colour('white')))
self.dc.DrawRectangle(10, 10, 100, 100)
def DrawRect2(self, e):
self.panel.SetBackgroundColour(wx.Colour('GREEN'))
self.Refresh()
self.Update()
self.dc = wx.ClientDC(self.panel)
self.dc.SetBrush(wx.Brush(wx.Colour('white')))
self.dc.DrawRectangle(20, 20, 50, 50)
myApp = wx.App()
Mywin(None,'Drawing demo')
myApp.MainLoop()

Answer 1

A DC doesn't appear to support adding a tooltip, which is annoying, especially as the underlying wx widget appears to, as far as I can tell from the docs.
The best I can come up with at the moment, is to track the mouse movements but it is far from satisfactory and I suspect so limited that it might not be any help.
With those caveats made, I've supplied 3 options for the ToolTip like display. Namely, setting and unsetting the tooltip of the panel itself, a statusbar entry and a popup window.
Discard any you don't require.
import wx
class Mywin(wx.Frame):
def __init__(self, parent, title):
super(Mywin, self).__init__(parent, title=title, size=(500, 300))
self.tips = ["","Rectangle 1","Rectangle 2"]
self.rect = []
self.InitUI()
def InitUI(self):
self.panel = wx.Panel(self)
self.panel.SetBackgroundColour(wx.Colour('RED'))
self.Centre()
self.Show(True)
menuBar = wx.MenuBar()
RectangleButton = wx.Menu()
self.status = self.CreateStatusBar()
self.status.SetFieldsCount(number=2)
Item1 = RectangleButton.Append(wx.ID_ANY, 'Rectangle 1')
Item2 = RectangleButton.Append(wx.ID_ANY, 'Rectangle 2')
menuBar.Append(RectangleButton, 'Rectangles')
self.SetMenuBar(menuBar)
self.Bind(wx.EVT_MENU, self.DrawRect1, Item1)
self.Bind(wx.EVT_MENU, self.DrawRect2, Item2)
self.panel.Bind(wx.EVT_MOTION, self.MouseMovement)
def DrawRect1(self, e):
self.panel.SetBackgroundColour(wx.Colour('BLUE'))
self.Update()
self.dc = wx.ClientDC(self.panel)
self.dc.SetBrush(wx.Brush(wx.Colour('white')))
self.dc.DrawRectangle(10, 20, 100, 200)
#Note the position of the DC
self.rect = [x for x in self.dc.BoundingBox]
#Append the id
self.rect.append(1)
def DrawRect2(self, e):
self.panel.SetBackgroundColour(wx.Colour('GREEN'))
self.Update()
self.dc = wx.ClientDC(self.panel)
self.dc.SetBrush(wx.Brush(wx.Colour('white')))
self.dc.DrawRectangle(20, 20, 50, 50)
self.rect = [x for x in self.dc.BoundingBox]
self.rect.append(2)
def MouseMovement(self, event):
x,y = event.GetPosition()
self.panel.SetToolTip('')
self.status.SetStatusText('', 1)
if self.rect:
if x >= self.rect[0] and x <= self.rect[2] and y >= self.rect[1] and y <= self.rect[3]:
self.panel.SetToolTip(self.tips[self.rect[4]])
self.status.SetStatusText("Hovering over "+self.tips[self.rect[4]], 1)
win = Popup(self,self.rect[4],self.tips[self.rect[4]])
pos = self.GetScreenPosition()
win.Position(pos,(-1,-1))
win.Popup()
class Popup(wx.PopupTransientWindow):
def __init__(self, parent, id, id_text):
wx.PopupTransientWindow.__init__(self, parent)
panel = wx.Panel(self)
panel.SetBackgroundColour("gold")
text = wx.StaticText(panel, -1,
"This is a wx.PopupTransientWindow\n"
"Click mouse outside of it\n\n"
"Id of widget is "+str(id)+"\n"
"You are hovering over "+id_text)
# add other widgets here if required
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(text, 0, wx.ALL, 5)
panel.SetSizer(sizer)
sizer.Fit(panel)
sizer.Fit(self)
self.Layout()
myApp = wx.App()
Mywin(None,'Drawing demo')
myApp.MainLoop()