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?
bumsfeld 413 Nearly a Posting Virtuoso
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Jump to PostI 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
Jump to PostBind was introduced with version 2.5 of wxPython.
Jump to PostThe 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 …
Jump to PostI 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. …
All 13 Replies
bumsfeld 413 Nearly a Posting Virtuoso
I googled and found something in a old code at:
http://aspn.activestate.com/ASPN/Mail/Message/wxPython-users/1908355
Still not shure!
vegaseat 1,735 DaniWeb's Hypocrite Team Colleague
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
bumsfeld 413 Nearly a Posting Virtuoso
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.
shanenin 0 Posting Whiz in Training
when I run the code, I get this error
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.
vegaseat 1,735 DaniWeb's Hypocrite Team Colleague
Bind was introduced with version 2.5 of wxPython.
shanenin 0 Posting Whiz in Training
is version 2.4 of wxPython still needed for many apps to run. Do you guys run both versions?
vegaseat 1,735 DaniWeb's Hypocrite Team Colleague
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!
vegaseat 1,735 DaniWeb's Hypocrite Team Colleague
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
bumsfeld 413 Nearly a Posting Virtuoso
This how far I am with the program. It does flicker so and needs more work:
# 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?
PKort 0 Newbie Poster
Try to update the coulor field only on the OnEraseBackground event.
Something like this :
in def _init_ :
self.panel.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
and then a extra def with the function for updating the colour field.
def OnEraseBackground(self, evt):
etc.....
Hope this helps.
Regards,
Peter
bumsfeld 413 Nearly a Posting Virtuoso
Peter thank you much,
I am just learning Python and need some handholding please! Can you give more detail?
Why do I use panel in bind?
What do I code in function "def OnEraseBackground(self, evt):"?
PKort 0 Newbie Poster
I have got a simpeler solution :
# 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)
# This does the trick !!!
self.label2.ClearBackground()
self.label2.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()Peter.
bumsfeld 413 Nearly a Posting Virtuoso
Wow Peter ClearBackground() did the trick and without it the colour would not chnage at all. Looks like you have to clear the old colour out first.
I could not find ClearBackground() at all in any information I have so far about wxPython! I do wonder where things like that are hidden at? Anyway thanks!
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