Python Paint Program

[QuantumPhysics]

This is a small paint program I made a while back with a GUI, I will also add saving files and opening previous files after I finish my current project.
Note: Can only run with wxPython extended lib

Here is the source code:

Python:

# Written by: QuantumPhysics # Date Written: 10/06/12 # includes wxWidgets module import wx class PaintWindow(wx.Window):     # array of colors available to draw     colours = ['Black', 'Yellow', 'Red', 'Green', 'Blue', 'Purple',         'Brown', 'Aquamarine', 'Forest Green', 'Light Blue', 'Goldenrod',         'Cyan', 'Orange', 'Navy', 'Light Grey', 'ClearScreen']     # color quantity     thicknesses = [1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128]     def __init__(self, parent):         # creates paint window         super(PaintWindow, self).__init__(parent,             style=wx.NO_FULL_REPAINT_ON_RESIZE)         self.initDrawing()         self.makeMenu()         # binds key_down and up events         self.bindEvents()         self.initBuffer()     def initDrawing(self):         self.SetBackgroundColour('WHITE')         self.currentThickness = self.thicknesses[0]         self.currentColour = self.colours[0]         self.lines = []         self.previousPosition = (0, 0)     def bindEvents(self):         for event, handler in [                 # creates bind event for left button down                 (wx.EVT_LEFT_DOWN, self.onLeftDown),                 # creates bind event once left button is released                 (wx.EVT_LEFT_UP, self.onLeftUp),                 # creates bind event for drawing (moving cursor)                 (wx.EVT_MOTION, self.onMotion),                 # creates bind event for right button up                 (wx.EVT_RIGHT_UP, self.onRightUp),                 (wx.EVT_SIZE, self.onSize),                        (wx.EVT_IDLE, self.onIdle),                        (wx.EVT_PAINT, self.onPaint),                 # creates event to close window after 'x' is selected                 (wx.EVT_WINDOW_DESTROY, self.cleanup)]:             self.Bind(event, handler)     def initBuffer(self):         # gets size of window         size = self.GetClientSize()         # sets window to empty canvas .bmp x-width, y-height         self.buffer = wx.EmptyBitmap(size.width, size.height)         dc = wx.BufferedDC(None, self.buffer)         dc.SetBackground(wx.Brush(self.GetBackgroundColour()))         dc.Clear()         self.drawLines(dc, *self.lines)         self.reInitBuffer = False     def makeMenu(self):         # creates menu on right click         self.menu = wx.Menu()         # sets selection for items (colors) in the runtime window on right click         self.idToColourMap = self.addCheckableMenuItems(self.menu,             self.colours)         # updates screen once a new color is selected         self.bindMenuEvents(menuHandler=self.onMenuSetColour,             updateUIHandler=self.onCheckMenuColours,             ids=self.idToColourMap.keys())         self.menu.Break()         self.idToThicknessMap = self.addCheckableMenuItems(self.menu,             self.thicknesses)         self.bindMenuEvents(menuHandler=self.onMenuSetThickness,             updateUIHandler=self.onCheckMenuThickness,             ids=self.idToThicknessMap.keys())     # adds a static surpressor to conditions     @staticmethod     def addCheckableMenuItems(menu, items):                 idToItemMapping = {}         for item in items:             menuId = wx.NewId()             idToItemMapping[menuId] = item             menu.Append(menuId, str(item), kind=wx.ITEM_CHECK)         return idToItemMapping     def bindMenuEvents(self, menuHandler, updateUIHandler, ids):                 sortedIds = sorted(ids)         firstId, lastId = sortedIds[0], sortedIds[-1]         for event, handler in \                 [(wx.EVT_MENU_RANGE, menuHandler),                  (wx.EVT_UPDATE_UI_RANGE, updateUIHandler)]:             self.Bind(event, handler, id=firstId, id2=lastId)     def onLeftDown(self, event):         # draw line         self.currentLine = []         self.previousPosition = event.GetPositionTuple()         self.CaptureMouse()     def onLeftUp(self, event):         # close motion, stop drawing, wait for event         if self.HasCapture():             self.lines.append((self.currentColour, self.currentThickness,                 self.currentLine))             self.currentLine = []             self.ReleaseMouse()     def onRightUp(self, event):         # if right button is clicked then make wx.menu to select colors         self.PopupMenu(self.menu)     def onMotion(self, event):         if event.Dragging() and event.LeftIsDown():             dc = wx.BufferedDC(wx.ClientDC(self), self.buffer)             currentPosition = event.GetPositionTuple()             lineSegment = self.previousPosition + currentPosition             self.drawLines(dc, (self.currentColour, self.currentThickness,                 [lineSegment]))             self.currentLine.append(lineSegment)             self.previousPosition = currentPosition     def onSize(self, event):                 self.reInitBuffer = True     def onIdle(self, event):         if self.reInitBuffer:             self.initBuffer()             self.Refresh(False)     def onPaint(self, event):                 dc = wx.BufferedPaintDC(self, self.buffer)     def cleanup(self, event):         if hasattr(self, "menu"):             self.menu.Destroy()             del self.menu     def onCheckMenuColours(self, event):         colour = self.idToColourMap[event.GetId()]         event.Check(colour == self.currentColour)     def onCheckMenuThickness(self, event):         thickness = self.idToThicknessMap[event.GetId()]         event.Check(thickness == self.currentThickness)     def onMenuSetColour(self, event):         self.currentColour = self.idToColourMap[event.GetId()]     def onMenuSetThickness(self, event):         self.currentThickness = self.idToThicknessMap[event.GetId()]     @staticmethod     def drawLines(dc, *lines):         dc.BeginDrawing()         for colour, thickness, lineSegments in lines:             pen = wx.Pen(wx.NamedColour(colour), thickness, wx.SOLID)             dc.SetPen(pen)             for lineSegment in lineSegments:                 dc.DrawLine(*lineSegment)         dc.EndDrawing() class PaintFrame(wx.Frame):     def __init__(self, parent=None):         super(PaintFrame, self).__init__(parent, title="Paint - Version 1.0 - QuantumPhysics",             size=(800,600),             style=wx.DEFAULT_FRAME_STYLE|wx.NO_FULL_REPAINT_ON_RESIZE)         doodle = PaintWindow(self) if __name__ == '__main__':     app = wx.App()     frame = PaintFrame()     frame.Show()     app.MainLoop()

Enjoy!

[QuantumPhysics]

So I got many views of my code but no replies, what are your responses to my code? I need all the feedback I can get.

[paintinx]

good morning, its been a long time since 2012 but I only was looking for "paint program" and "programming" using the internet. and this is the first entry I will try it - did u everything with the idea/code in the meantime?


best, stef