Hi,
I’m still a newbie in python (and wxpython),
and I’m trying to create an application that basically consists on loading a
main frame, and creating a child frame inside it (using MDI) to work with an
image. What I need to do is to draw points in this image (for which I’m using
floatcanvas) and store its coordinates.
The problem I’m having is that when I draw the
point it only shows up if I hit the “Zoom to Fit” button that comes with
NavCanvas, and I would like for it to appear on the screen automatically.
Another thing I wanted to do is to be able to
erase some specific point after I have drawn it, I’m not sure how would be the
best way to do it, so I would appreciate any suggestions.
I’m attaching the code below, thanks in
advance.
Nadili L. Ribeiro
import wx
import os
from floatcanvas import NavCanvas, FloatCanvas
class Frame(wx.MDIParentFrame):
def __init__(self):
wx.MDIParentFrame.__init__(self, None, -1, "Main Frame", size=(600,400))
self.statusbar = self.CreateStatusBar()
menu = wx.Menu()
menu.Append(5000, "&New Picture")
menubar = wx.MenuBar()
menubar.Append(menu, "&File")
self.SetMenuBar(menubar)
self.Bind(wx.EVT_MENU, self.OnNewPicture, id=5000)
def OnNewPicture(self, evt):
"""creates child frame"""
self.ChildFrame = wx.MDIChildFrame(self, -1, "Child Frame")
"""create canvas"""
NC = NavCanvas.NavCanvas(self.ChildFrame,-1,
size = (5000,5000),
ProjectionFun = None,
Debug = 0,
BackgroundColor = "White")
self.Canvas = NC.Canvas
"""load image"""
image = wx.Image("orion.jpg")
self.temp = image.ConvertToBitmap()
self.Canvas.AddScaledBitmap(self.temp, (0,0), Height =
image.GetSize()[1], Position='tl')
self.Canvas.ZoomToBB()
self.Show()
class App(wx.App):
def OnInit(self):
"""Load Frame"""
self.frame = Frame()
self.frame.Show()
self.Bind(wx.EVT_RIGHT_DOWN, self.OnDrawDot)
self.SetTopWindow(self.frame)
return (True)
def OnDrawDot(self, evt):
mpos = evt.GetPosition()
mposcanvas = self.frame.Canvas.PixelToWorld(mpos)
self.frame.statusbar.SetStatusText("Pos: %s" %str(mposcanvas))
self.frame.Canvas.AddPoint(mposcanvas, Diameter=9, Color = "Red")
self.frame.Show()
def main():
app = App()
app.MainLoop()
if __name__ == '__main__':
main()
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