wxCanvas-Get current coordinates
 

Hi, this is my code:

# -*- coding: cp1250 -*-

import  wx

class Okno:

    def __init__(self,parent=None,id=wx.ID_ANY,title="Graf"):

        self.okno=wx.MDIChildFrame(parent,title="Graf",id=-1)

        self.okno.Maximize()

        self.okno.SetAutoLayout(True)

        self.okno.SetBackgroundColour("#FCFCFE")       

        self.sizer = wx.FlexGridSizer(2,2,0,0)

        self.canvas = wx.ScrolledWindow(self.okno, id=wx.ID_ANY)

        self.canvas.EnableScrolling(True, True)        

        self.canvas.SetScrollbars(20, 20, 1000/20, 1000/20)

        self.sizer.Add(self.canvas, 1, wx.EXPAND)

        self.sizer.AddGrowableRow(0, 1)

        self.sizer.AddGrowableCol(0, 1)  

        self.okno.SetSizer(self.sizer)

        self.canvas.Bind(wx.EVT_PAINT, self.OnPaint)        

    

    def OnPaint(self, event):

        pass

if __name__ == "__main__":

    okno = wx.App(0)

    parent=wx.MDIParentFrame(None,size=wx.Size(500,500))

    o=Okno(parent)

    parent.Show()

    okno.MainLoop()

As you can see, its scrolled canvas and i need to get current coordinates of part of canvas which i can see (sory my english). For exapmle: If i run my code, that left up corner is (0,0) and down right corner is (500,500).

Thanks!

Re: wxCanvas-Get current coordinates
 

This will give the mouse position within the whole scrolled canvas ...

"""

# -*- coding: cp1250 -*-

"""

# get coordinates of whole scrolled canvas

 

import  wx

 

class Okno:

    def __init__(self,parent=None,id=wx.ID_ANY,title="Graf"):

        self.okno=wx.MDIChildFrame(parent,title="Graf",id=-1)

        self.okno.Maximize()

        self.okno.SetAutoLayout(True)

        self.okno.SetBackgroundColour("#FCFCFE")       

        self.sizer = wx.FlexGridSizer(2,2,0,0)

        self.canvas = wx.ScrolledWindow(self.okno, id=wx.ID_ANY)

        self.canvas.EnableScrolling(True, True)        

        self.canvas.SetScrollbars(20, 20, 1000/20, 1000/20)

        self.sizer.Add(self.canvas, 1, wx.EXPAND)

        self.sizer.AddGrowableRow(0, 1)

        self.sizer.AddGrowableCol(0, 1)  

        self.okno.SetSizer(self.sizer)

        self.canvas.Bind(wx.EVT_PAINT, self.OnPaint)

 

        # hook left mouse button event

        self.canvas.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)

 

    def OnPaint(self, event):

        pass

    

    def OnLeftDown(self, event):

        """left mouse button is pressed"""

        device_pt = event.GetPosition()  # tuple (x, y)

        # need to add current scrollbar value logic_pt to device_pt

        # if you want position relative to whole canvas

        logic_pt = self.canvas.CalcUnscrolledPosition(0, 0)

        #print device_pt, logic_pt

        adjusted_pt = (device_pt[0]+logic_pt[0], device_pt[1]+logic_pt[1])

        self.okno.SetTitle('LeftMouse = ' + str(adjusted_pt))

 

if __name__ == "__main__":

    okno = wx.App(0)

    parent=wx.MDIParentFrame(None,size=wx.Size(500,500))

    o=Okno(parent)

    parent.Show()

    okno.MainLoop()

Re: wxCanvas-Get current coordinates
 

Thanks for fast answer, but i need something else. I dont know how to say it in english, so i painted it:
http://www.blujacker.wz.cz/coords.jpg

Re: wxCanvas-Get current coordinates
 

Lol, solved... i am really noob. The solution is:

up_left_corner=self.canvas.CalcUnscrolledPosition(0, 0)

dow_right_corner=self.canvas.CalcUnscrolledPosition(width_canvas, height_canvas)