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Improve zooming buttons by dynamically computing center 

This might be slightly off, but it could also be the zooming code that's off.
master
Guillaume Seguin 2013-05-16 16:13:31 +02:00
parent cc64aef5f2
commit dbc5362085
1 changed files with 5 additions and 2 deletions
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7
printrun/gviz.py
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@ -43,8 +43,8 @@ class window(wx.Frame):
vbox.Add(self.p, 1, wx.EXPAND)
self.SetSizer(vbox)
self.SetMinSize(self.ClientToWindowSize(vbox.GetMinSize()))
self.Bind(wx.EVT_TOOL, lambda x:self.p.zoom(200, 200, 1.2), id = 1)
self.Bind(wx.EVT_TOOL, lambda x:self.p.zoom(200, 200, 1/1.2), id = 2)
self.Bind(wx.EVT_TOOL, lambda x:self.p.zoom(-1, -1, 1.2), id = 1)
self.Bind(wx.EVT_TOOL, lambda x:self.p.zoom(-1, -1, 1/1.2), id = 2)
self.Bind(wx.EVT_TOOL, lambda x:self.p.layerup(), id = 3)
self.Bind(wx.EVT_TOOL, lambda x:self.p.layerdown(), id = 4)
self.Bind(wx.EVT_TOOL, self.resetview, id = 5)
@ -211,6 +211,9 @@ class gviz(wx.Panel):
wx.CallAfter(self.zoom, 0, 0, zoomratio)
def zoom(self, x, y, factor):
if x == -1 and y == -1:
side = min(self.size)
x = y = side / 2
self.scale = [s * factor for s in self.scale]
self.translate = [ x - (x-self.translate[0]) * factor,