Develop Reference

How to convince the mouse right click popup menu to show near the mouse cursor position in wxPython?

I have a wx frame that uses a SplitterWindow (the frame has also main menu, toolbar, status bar – but this is not relevant here). Everything works as expected, except for the mouse right click popup menu over buttons, in that the popup menu shows up at apparently random positions over the screen – and at "negative" random positions when moving the frame to the second screen (monitor). By "apparently" I mean that the popup menu position seems somewhat related to the actual button (or frame) position, but multiplied with some factor – positive on main screen and negative on the second.
I ran the code only on Windows 10 64bit / Python 3.9.0 64bit / wx '4.1.1 msw (phoenix) wxWidgets 3.1.5'. The first lines of the frame code were generated via wxGlade, so perhaps this could be related in the particular way the frame code was initially generated.
I created a stripped down test code, shown below, that mimics the exact situation of the real code in terms of mouse right click popup menu. In this test code I placed the button in the second pane, but it behaves the same on whatever pane.
I tried the same popup menu code on other simple wx example codes but without using SplitterWindow and there the popup behavior was ok. What should I change or improve in the test code below ?
#!/usr/bin/env python3
# -*- coding: UTF-8 -*-
import wx
class MyFrame(wx.Frame):
def __init__(self, *args, **kwds):
kwds["style"] = kwds.get("style", 0) | wx.DEFAULT_FRAME_STYLE
wx.Frame.__init__(self, *args, **kwds)
self.SetSize((400, 300))
self.SetTitle("test frame")
sizer_0 = wx.BoxSizer(wx.HORIZONTAL)
self.window_1 = wx.SplitterWindow(self, wx.ID_ANY)
self.window_1.SetMinimumPaneSize(20)
sizer_0.Add(self.window_1, 1, wx.EXPAND, 0)
self.pane_1 = wx.Panel(self.window_1, wx.ID_ANY)
sizer_1 = wx.BoxSizer(wx.HORIZONTAL)
self.pane_2 = wx.Panel(self.window_1, wx.ID_ANY)
sizer_2 = wx.BoxSizer(wx.HORIZONTAL)
self.button = wx.Button(self.pane_2, wx.ID_ANY, "test button")
sizer_2.Add(self.button, 0, 0, 0)
self.pane_1.SetSizer(sizer_1)
self.pane_2.SetSizer(sizer_2)
self.window_1.SplitVertically(self.pane_1, self.pane_2)
self.SetSizer(sizer_0)
self.Layout()
self.Bind(wx.EVT_CONTEXT_MENU, self.OnButtonContextMenu, self.button)
def OnButtonContextMenu(self, event):
self.PopupMenu(ButtonContext(self), event.GetPosition())
##
class ButtonContext(wx.Menu):
def __init__(self, parent):
super(ButtonContext, self).__init__()
self.parent = parent
button_popup = wx.MenuItem(self, wx.ID_ANY, 'test popup')
self.Append(button_popup)
self.Bind(wx.EVT_MENU, self.button_action, button_popup)
def button_action(self, event):
event.Skip()
##
class MyApp(wx.App):
def OnInit(self):
self.frame = MyFrame(None, wx.ID_ANY, "")
self.SetTopWindow(self.frame)
self.frame.Show()
return True
##
if __name__ == "__main__":
app = MyApp(0)
app.MainLoop()

It's slightly convoluted but I think you are overriding the InvokingWindow's position for wx.Menu by passing event.GetPosition() to class ButtonContext.
In short if you drop that parameter, event.GetPosition() and just invoke it with self.PopupMenu(ButtonContext(self)), it will default to the parent window, the button itself.
The result being that it will always focus on the button that you just right clicked.

How to create an info icon with wxPython

I so far failed to create what is colloquially called an "info icon" with wxPython. An icon with some sort of 'i' image that shows a large tooltip on hover.
I can add a wx.StaticBitmap for the image but it ignores all SetToolTipString or SetToolTip(wx.ToolTip()) calls. OR I can add a large tool tip to a wx.StaticText as shown below.
Ignore that the icon doesn't have the correct size yet.
Needless to say that eventually the tooltip needs a background color that is different from the panel background color (not the focus here). I can't use wx.adv.RichToolTip because I'm on wxPython 3.0.2.0 osx-cocoa.
What is a good way to solve this?

If you create a button with an ID of wx.ID_HELP then you'll get the stock help button for the platform, if it has one. Then you can do whatever you want with it like any button. Assign a tooltip, do something in the EVT_BUTTON event, etc. See the StockButtons sample in the demo. If the stock image or label doesn't meet your needs then you can probably just use a wx.BitmapButton to show the image you want and still have the standard tooltip support.
Something else you may want to look into is the ContextHelp sample in the demo. It shows how to use a wx.ContextHelpButton which, when clicked, puts the application into context-help mode. A popup tip window will then be shown for whatever widget is clicked on next. Not quite what you are asking for, but it might be a good fit.

wxArtProvider may be able to help http://docs.wxwidgets.org/trunk/classwx_art_provider.html
import wx
class Test(wx.Frame):
def __init__(self,parent,msg,title):
wx.Frame.__init__(self, None)
self.panel = wx.Panel(self, size=(300,400))
mainSizer = wx.BoxSizer(wx.HORIZONTAL)
staticIcon = wx.BitmapButton(self.panel, bitmap=wx.ArtProvider.GetBitmap(wx.ART_WARNING), size=(32,32))
mainSizer.Add(staticIcon, flag=wx.ALL, border=10)
ttip = "xxxxxxxxxxxxxxx\n"
ttip += "xxxxxxxxxxxxxxxxxxxxxxxxxx\n"
ttip += "xxxxxxxxxxxxxxxxxxxxxxxxxxx\n"
ttip += "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
staticIcon.SetToolTipString(ttip)
buttonText = wx.StaticText(self.panel, -1, msg, wx.DefaultPosition, wx.DefaultSize, 0)
mainSizer.Add(buttonText, flag=wx.ALL, border=10)
staticIcon.Bind(wx.EVT_BUTTON, self.OnButton)
self.SetSizer(mainSizer)
self.Show()
def OnButton(self, evt):
print "The button was pressed - display some help"
if __name__ == '__main__':
app = wx.App()
Test(None, "Dummy Exercise", "Test 123")
app.MainLoop()

If all you want to do is show a tooltip when the image is moused over, then you need to bind your instance of the wx.StaticBitmap to EVT_MOTION:
import wx
class MyPanel(wx.Panel):
def __init__(self, parent):
wx.Panel.__init__(self, parent)
bmp = wx.ArtProvider.GetBitmap(wx.ART_WARNING)
self.image = wx.StaticBitmap(self, bitmap=bmp)
self.image.Bind(wx.EVT_MOTION, self.on_mouse_over)
def on_mouse_over(self, event):
self.image.SetToolTipString('BLAH BLAH BLAH')
class MyFrame(wx.Frame):
def __init__(self):
wx.Frame.__init__(self, None, title='Icon Mouser')
panel = MyPanel(self)
self.Show()
if __name__ == '__main__':
app = wx.App(False)
frame = MyFrame()
app.MainLoop()
When I run this code, I get something like this:

Dynamic text on top of wx.SplashScreen

I am using wxPython to create a splash screen. It actually works great, but now I want to put some loading feedback on the splashscreen. Does anyone know how I can put a dynamic label on top of the splashscreen? Here is the code I am using:
class myFrame(wxFrame):
wx.Frame.__init__(self, parent, -1, _("Radar"),
size=(800, 600), style=wx.DEFAULT_FRAME_STYLE)
class MySplash(wx.SplashScreen):
def __init__(self, parent=None):
aBitmap = wx.Image(name=VarFiles["Radar_Splash"]).ConvertToBitmap()
splashStyle = wx.SPLASH_CENTRE_ON_SCREEN | wx.SPLASH_TIMEOUT
splashDuration = 12000 # ms
wx.SplashScreen.__init__(self, aBitmap, splashStyle, splashDuration, parent)
self.Bind(wx.EVT_CLOSE, self.CloseSplash)
wx.Yield()
def CloseSplash(self, evt):
self.Hide()
global frame
frame = myFrame(parent=None)
app.SetTopWindow(frame)
frame.Show(True)
evt.Skip()
class MyAwesomeApp(wx.App):
def OnInit(self):
MySplash = MySplash()
MySplash.Show()
return True

As the SplashScreen is essentially a window displaying a bitmap, you will need to modify the provided bitmap, doing the layouting yourself.
def _draw_bmp(bmp, txt_lst):
dc = wx.MemoryDC()
dc.SelectObject(bmp)
dc.Clear()
gc = wx.GraphicsContext.Create(dc)
font = wx.SystemSettings.GetFont(wx.SYS_DEFAULT_GUI_FONT)
gc.SetFont(font)
for i, line in enumerate(txt_lst):
dc.DrawText(line, 10, i * 20 + 15)
dc.SelectObject(wx.NullBitmap)
# ...
aBitmap = #...
_draw_bmp(aBitmap, ['splash', 'screen', 'text'])
The wx.GraphicsContext will be helpful to have antialiased text looking the same as in the underlying OS.

Determining selected image in wxPython

I have a set of images available. If I click on one of those images is there a way to determine which of the images has been clicked on in wxPython?

You will almost certainly have to calculate it for yourself. The most straight-forward method would be to use a mouse event like wx.EVT_LEFT_DOWN and grab the mouse's coordinates in the event handler. Then use that information to tell you where on your wxPython window you clicked. Each of your image widgets or DCs or whatever you're using can report it's size and position, so if the mouse coordinates are in X image's boundaries, you know it's been clicked on. You might also be able to use the HitTest() method, depending on what you're using to show the images.
EDIT: Here is how you would do it if you were using a wx.StaticBitmap, which actually lets you attach an wx.EVT_LEFT_DOWN to it:
import wx
class PhotoCtrl(wx.Frame):
def __init__(self):
size = (400,800)
wx.Frame.__init__(self, None, title='Photo Control', size=size)
self.panel = wx.Panel(self)
img = wx.EmptyImage(240,240)
self.imageCtrl = wx.StaticBitmap(self.panel, wx.ID_ANY,
wx.BitmapFromImage(img),
name="emptyImage")
imageCtrl2 = wx.StaticBitmap(self.panel, wx.ID_ANY,
wx.BitmapFromImage(img),
name="anotherEmptyImage")
self.imageCtrl.Bind(wx.EVT_LEFT_DOWN, self.onClick)
imageCtrl2.Bind(wx.EVT_LEFT_DOWN, self.onClick)
mainSizer = wx.BoxSizer(wx.VERTICAL)
mainSizer.Add(self.imageCtrl, 0, wx.ALL, 5)
mainSizer.Add(imageCtrl2, 0, wx.ALL, 5)
self.panel.SetSizer(mainSizer)
self.Show()
#----------------------------------------------------------------------
def onClick(self, event):
""""""
print event.GetPosition()
imgCtrl = event.GetEventObject()
print imgCtrl.GetName()
if __name__ == '__main__':
app = wx.App(False)
frame = PhotoCtrl()
app.MainLoop()

you dont tell us anything about how you are displaying your images? are you blitting them right on the dc? are you creating panels for them? etc... properly setting up your project is important. basically you give us zero information to help you with.
Keeping all that in mind, something like this would work fine (this is called a self contained code example, you should always provide one with your questions, to make it easier for people to help you)
import wx
a = wx.App(redirect=False)
f= wx.Frame(None,-1,"Some Frame",size = (200,200))
sz = wx.BoxSizer(wx.HORIZONTAL)
def OnClick(evt):
print "Clicked:",evt.GetId()-10023
for i,img in enumerate(["img1","img2","img3"]):
id = 10023+i
p = wx.Panel(f,-1)
sz.Add(p)
sz1 = wx.BoxSizer()
p.Bind(wx.EVT_LEFT_UP,OnClick)
bmp = wx.Image(img).ConvertToBitmap()
b = wx.StaticBitmap(p,-1,bmp)
sz1.Add(b)
p.SetSizer(sz1)
f.SetSizer(sz)
f.Layout()
f.Fit()
f.Show()
a.MainLoop()
Keep in mind I didnt test it... but theoretically it should work...

Show another window wxpython?

I have been looking around the Internet but I am not sure if there is a way to show 2 classes in wxPython in 2 separate windows. And could we communicate between them (like one class being the dialog and the other the main class)?
I think I did this before using Show() but I am not sure how to repeat this.
So basically I would like to be able to have a dialog but by using a class instead. This would be more powerful than using Modal dialogs.
Thanks

Here you have a simple example of two frames communicating:
The trick is in sending an object reference to share between frames, either creating one inside the other (as in this case) or through a common parent.
The code is:
import wx
class MainFrame(wx.Frame):
def __init__(self):
wx.Frame.__init__(self, None, size=(150,100), title='MainFrame')
pan =wx.Panel(self)
self.txt = wx.TextCtrl(pan, -1, pos=(0,0), size=(100,20), style=wx.DEFAULT)
self.but = wx.Button(pan,-1, pos=(10,30), label='Tell child')
self.Bind(wx.EVT_BUTTON, self.onbutton, self.but)
self.child = ChildFrame(self)
self.child.Show()
def onbutton(self, evt):
text = self.txt.GetValue()
self.child.txt.write('Parent says: %s' %text)
class ChildFrame(wx.Frame):
def __init__(self, parent):
wx.Frame.__init__(self, None, size=(150,100), title='ChildFrame')
self.parent = parent
pan = wx.Panel(self)
self.txt = wx.TextCtrl(pan, -1, pos=(0,0), size=(100,20), style=wx.DEFAULT)
self.but = wx.Button(pan,-1, pos=(10,30), label='Tell parent')
self.Bind(wx.EVT_BUTTON, self.onbutton, self.but)
def onbutton(self, evt):
text = self.txt.GetValue()
self.parent.txt.write('Child says: %s' %text)
if __name__ == "__main__":
App=wx.PySimpleApp()
MainFrame().Show()
App.MainLoop()

You can also use pubsub to communicate between two frames. I show one way of doing just that in this article: http://www.blog.pythonlibrary.org/2010/06/27/wxpython-and-pubsub-a-simple-tutorial/
If you don't want the first frame to hide itself, just remove the line with the Hide() in it.