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wxPython slider help

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Join Date: Jul 2005

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bumsfeld

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wxPython slider help

Oct 17th, 2005

I have run the slider demo that come with wxPython docs. It is rather stupid, as it puts slider on a panel using many unexplained numbers, never tells how to get position of slider or what to do next if the slider is moved. I am much lost, does anyone have a actual usefull example?

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Re: wxPython slider help

Oct 17th, 2005

I googled and found something in a old code at:
http://aspn.activestate.com/ASPN/Mai...-users/1908355

Still not shure!

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Re: wxPython slider help

Oct 18th, 2005

I looked around in my toolbox and found some odds and ends. I combined what I found and wrote a little code snippet on the wx.Slider(), hope it helps.
http://www.daniweb.com/code/snippet403.html

May 'the Google' be with you!

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Re: wxPython slider help

Oct 19th, 2005

I copied the snippet onto my IDE editor and it works well. Then I made three of vertically sliders and just chnaged the upper left corner x,y of each so now I have three sliders next to each other in the right side of frame or panel for RGB selection. Looks like good start of project.

What would you recommend to use for a colour area. I need two of them one for computer select colour and one for slider select colour.

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Re: wxPython slider help

Oct 19th, 2005

when I run the code, I get this error

 Help with Code Tags 
 Python Syntax (Toggle Plain Text) 
shane@mainbox ~ $ python test.py
Traceback (most recent call last):
  File "test.py", line 58, in ?
    MyPanel(frame,-1)
  File "test.py", line 41, in __init__
    self.Bind(wx.EVT_SLIDER, self.sliderUpdate)
AttributeError: MyPanel instance has no attribute 'Bind'
shane@mainbox ~ $ python test.py
Traceback (most recent call last):
  File "test.py", line 58, in ?
    MyPanel(frame,-1)
  File "test.py", line 41, in __init__
    self.Bind(wx.EVT_SLIDER, self.sliderUpdate)
AttributeError: MyPanel instance has no attribute 'Bind'

My linux system has two different versions of wxPython installed, my guess is it is using the wrong version.

In a perfect world exceptions would not be needed.

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Re: wxPython slider help

Oct 19th, 2005

Bind was introduced with version 2.5 of wxPython.

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Re: wxPython slider help

Oct 19th, 2005

is version 2.4 of wxPython still needed for many apps to run. Do you guys run both versions?

In a perfect world exceptions would not be needed.

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Re: wxPython slider help

Oct 19th, 2005

The newest wxPython version 2.6 is still compatible with 2.4 even though the wx namespace is now preferred. If you use an editor with code completion, then you get a dropdown list of wxPython choices after you typed "wx." .

I would not recommend to keep old versions of wxPython around, mixed with newer versions!

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Re: wxPython slider help

Oct 20th, 2005

•

Originally Posted by bumsfeld

I copied the snippet onto my IDE editor and it works well. Then I made three of vertically sliders and just chnaged the upper left corner x,y of each so now I have three sliders next to each other in the right side of frame or panel for RGB selection. Looks like good start of project.

What would you recommend to use for a colour area. I need two of them one for computer select colour and one for slider select colour.

The best area to color with the sliders without getting too much flickering would be a paint event like drawing and then floodfilling a shape like a rectangle. Take a look at the wxPython snippet ...
http://www.daniweb.com/code/snippet407.html

May 'the Google' be with you!

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Re: wxPython slider help

#10

Oct 23rd, 2005

This how far I am with the program. It does flicker so and needs more work:

 Help with Code Tags 
 Python Syntax (Toggle Plain Text) 
# Colour Matching Skill Tester    first version
# Colour the label1 with random RGB values
# Colour the label2 with RGB values from sliders
# Needs exposition of result closeness and possible file saving
 
import random
import wx
 
class MyPanel(wx.Panel):
    """ class MyPanel creates a panel with 2 labels, 3 sliders, inherits wx.Panel """
    def __init__(self, parent, id):
        wx.Panel.__init__(self, parent, id)
        self.SetBackgroundColour("white")
        str1 = ""
 
        self.Red1 = random.randrange(256)
        self.Green1 = random.randrange(256)
        self.Blue1 = random.randrange(256)
        # label1 with random RGB colour values
        self.label1 = wx.StaticText(self, -1, str1 , (10, 10), (120, 100))
        self.label1.SetBackgroundColour((self.Red1, self.Green1, self.Blue1))
 
        self.Red2 = 125
        self.Green2 = 125
        self.Blue2 = 125
        # label2 with RGB colour values from sliders
        self.label2 = wx.StaticText(self, -1, str1 , (10, 120), (120, 100))
        self.label2.SetBackgroundColour((self.Red2, self.Green2, self.Blue2))
 
        # init value = 125, min value = 0, max value = 255 for colours
        self.sliderR = wx.Slider(self, -1, self.Red2, 0, 255, (140, 10), (50, 200),
            wx.SL_VERTICAL | wx.SL_AUTOTICKS | wx.SL_LABELS)
        wx.StaticText(self, -1, "Red" , (160, 205))
        self.sliderG = wx.Slider(self, -1, self.Green2, 0, 255, (200, 10), (50, 200),
            wx.SL_VERTICAL | wx.SL_AUTOTICKS | wx.SL_LABELS)
        wx.StaticText(self, -1, "Green" , (220, 205))
        self.sliderB = wx.Slider(self, -1, self.Blue2, 0, 255, (260, 10), (50, 200),
            wx.SL_VERTICAL | wx.SL_AUTOTICKS | wx.SL_LABELS)
        wx.StaticText(self, -1, "Blue" , (280, 205))
 
        # result label
        self.label3 = wx.StaticText(self, -1, "", (160, 230))
 
        # all three sliders ...
        self.Bind(wx.EVT_SCROLL, self.slideColour)
 
        # button click
        self.button1 = wx.Button(self, -1, "Evaluate", (10, 230))
        self.button1.Bind(wx.EVT_BUTTON, self.button1Click)
 
    def slideColour(self, event):
        self.Red2 = self.sliderR.GetValue()
        self.Green2 = self.sliderG.GetValue()
        self.Blue2 = self.sliderB.GetValue()
        colour1 = wx.Colour(self.Red2, self.Green2, self.Blue2)
        # still flickers much!
        self.label2 = wx.StaticText(self, -1, "", (10, 120), (120, 100)).SetBackgroundColour(colour1)
 
    def button1Click(self,event):
        str1 = "Upper  R=%d G=%d B=%d" % (self.Red1, self.Green1, self.Blue1)
        str2 = "Lower  R=%d G=%d B=%d" % (self.Red2, self.Green2, self.Blue2)
        self.label3.SetLabel(str1 + '\n' + str2)
 
 
app = wx.PySimpleApp()
frame = wx.Frame(None, -1, "Colour Skill Tester V1.0 HAB", size = (350, 310))
MyPanel(frame,-1)
frame.Show(True)
app.MainLoop()
# Colour Matching Skill Tester    first version
# Colour the label1 with random RGB values
# Colour the label2 with RGB values from sliders
# Needs exposition of result closeness and possible file saving

import random
import wx

class MyPanel(wx.Panel):
    """ class MyPanel creates a panel with 2 labels, 3 sliders, inherits wx.Panel """
    def __init__(self, parent, id):
        wx.Panel.__init__(self, parent, id)
        self.SetBackgroundColour("white")
        str1 = ""
        
        self.Red1 = random.randrange(256)
        self.Green1 = random.randrange(256)
        self.Blue1 = random.randrange(256)
        # label1 with random RGB colour values
        self.label1 = wx.StaticText(self, -1, str1 , (10, 10), (120, 100))
        self.label1.SetBackgroundColour((self.Red1, self.Green1, self.Blue1))
        
        self.Red2 = 125
        self.Green2 = 125
        self.Blue2 = 125
        # label2 with RGB colour values from sliders
        self.label2 = wx.StaticText(self, -1, str1 , (10, 120), (120, 100))
        self.label2.SetBackgroundColour((self.Red2, self.Green2, self.Blue2))
        
        # init value = 125, min value = 0, max value = 255 for colours
        self.sliderR = wx.Slider(self, -1, self.Red2, 0, 255, (140, 10), (50, 200),
            wx.SL_VERTICAL | wx.SL_AUTOTICKS | wx.SL_LABELS)
        wx.StaticText(self, -1, "Red" , (160, 205))
        self.sliderG = wx.Slider(self, -1, self.Green2, 0, 255, (200, 10), (50, 200),
            wx.SL_VERTICAL | wx.SL_AUTOTICKS | wx.SL_LABELS)
        wx.StaticText(self, -1, "Green" , (220, 205))
        self.sliderB = wx.Slider(self, -1, self.Blue2, 0, 255, (260, 10), (50, 200),
            wx.SL_VERTICAL | wx.SL_AUTOTICKS | wx.SL_LABELS)
        wx.StaticText(self, -1, "Blue" , (280, 205))
        
        # result label
        self.label3 = wx.StaticText(self, -1, "", (160, 230))

        # all three sliders ...
        self.Bind(wx.EVT_SCROLL, self.slideColour)
       
        # button click
        self.button1 = wx.Button(self, -1, "Evaluate", (10, 230))
        self.button1.Bind(wx.EVT_BUTTON, self.button1Click)
        
    def slideColour(self, event):
        self.Red2 = self.sliderR.GetValue()
        self.Green2 = self.sliderG.GetValue()
        self.Blue2 = self.sliderB.GetValue()
        colour1 = wx.Colour(self.Red2, self.Green2, self.Blue2)
        # still flickers much!
        self.label2 = wx.StaticText(self, -1, "", (10, 120), (120, 100)).SetBackgroundColour(colour1)
     
    def button1Click(self,event):
        str1 = "Upper  R=%d G=%d B=%d" % (self.Red1, self.Green1, self.Blue1)
        str2 = "Lower  R=%d G=%d B=%d" % (self.Red2, self.Green2, self.Blue2)
        self.label3.SetLabel(str1 + '\n' + str2)
        

app = wx.PySimpleApp()
frame = wx.Frame(None, -1, "Colour Skill Tester V1.0 HAB", size = (350, 310))
MyPanel(frame,-1)
frame.Show(True)
app.MainLoop()

Anybody have idea about stopping flicker?