In Python using wxPython, how can I set the transparency and size of a window based on the proximity of the mouse relative to the application's window, or frame?

Eg. similar to a hyperbolic zoom, or The Dock in MAC OS X? I am trying to achieve this effect with a png with transparency and a shaped window.

Any libraries or code snippets that do this would be great too. Thanks.

解決方案

Here's code to do it. Basically uses the approach mentioned by Infinity77. Tested on Windows. Works nicely!

import wx

MIN_ALPHA = 64

MAX_ALPHA = 255

class Frame(wx.Frame):

def __init__(self):

super(Frame, self).__init__(None)

self.alpha = MAX_ALPHA

self.SetTitle('Mouse Alpha')

self.on_timer()

def on_timer(self):

x, y, w, h = self.GetRect()

mx, my = wx.GetMousePosition()

d1 = max(x - mx, mx - (x + w))

d2 = max(y - my, my - (y + h))

alpha = MAX_ALPHA - max(d1, d2)

alpha = max(alpha, MIN_ALPHA)

alpha = min(alpha, MAX_ALPHA)

if alpha != self.alpha:

self.SetTransparent(alpha)

self.alpha = alpha

wx.CallLater(20, self.on_timer)

if __name__ == '__main__':

app = wx.App(None)

frame = Frame()

frame.Show()

app.MainLoop()

總結

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