main.py

用wxPython编写GUI程序的样例代码

                icon = wx.StaticBitmap(self, -1, bmp)
            else:
                icon = (32,32) # make a spacer instead

        if caption:
            caption = wx.StaticText(self, -1, caption)
            caption.SetFont(wx.Font(28, wx.SWISS, wx.NORMAL, wx.BOLD))

        message = wx.StaticText(self, -1, message)

        # add to sizers for layout
        tbox = wx.BoxSizer(wx.VERTICAL)
        if caption:
            tbox.Add(caption)
            tbox.Add((10,10))
        tbox.Add(message)
        
        hbox = wx.BoxSizer(wx.HORIZONTAL)
        hbox.Add((10,10), 1)
        hbox.Add(icon)
        hbox.Add((10,10))
        hbox.Add(tbox)
        hbox.Add((10,10), 1)

        box = wx.BoxSizer(wx.VERTICAL)
        box.Add((10,10), 1)
        box.Add(hbox, 0, wx.EXPAND)
        box.Add((10,10), 2)

        self.SetSizer(box)
        self.Fit()
        

#---------------------------------------------------------------------------
# A class to be used to display source code in the demo.  Try using the
# wxSTC in the StyledTextCtrl_2 sample first, fall back to wxTextCtrl
# if there is an error, such as the stc module not being present.
#

try:
    ##raise ImportError     # for testing the alternate implementation
    from wx import stc
    from StyledTextCtrl_2 import PythonSTC

    class DemoCodeEditor(PythonSTC):
        def __init__(self, parent):
            PythonSTC.__init__(self, parent, -1, style=wx.BORDER_NONE)
            self.SetUpEditor()

        # Some methods to make it compatible with how the wxTextCtrl is used
        def SetValue(self, value):
            if wx.USE_UNICODE:
                value = value.decode('iso8859_1')
            self.SetText(value)
            self.EmptyUndoBuffer()
            self.SetSavePoint()

        def IsModified(self):
            return self.GetModify()

        def Clear(self):
            self.ClearAll()

        def SetInsertionPoint(self, pos):
            self.SetCurrentPos(pos)
            self.SetAnchor(pos)

        def ShowPosition(self, pos):
            line = self.LineFromPosition(pos)
            #self.EnsureVisible(line)
            self.GotoLine(line)

        def GetLastPosition(self):
            return self.GetLength()

        def GetPositionFromLine(self, line):
            return self.PositionFromLine(line)

        def GetRange(self, start, end):
            return self.GetTextRange(start, end)

        def GetSelection(self):
            return self.GetAnchor(), self.GetCurrentPos()

        def SetSelection(self, start, end):
            self.SetSelectionStart(start)
            self.SetSelectionEnd(end)

        def SelectLine(self, line):
            start = self.PositionFromLine(line)
            end = self.GetLineEndPosition(line)
            self.SetSelection(start, end)
            
        def SetUpEditor(self):
            """
            This method carries out the work of setting up the demo editor.            
            It's seperate so as not to clutter up the init code.
            """
            import keyword
            
            self.SetLexer(stc.STC_LEX_PYTHON)
            self.SetKeyWords(0, " ".join(keyword.kwlist))
    
            # Enable folding
            self.SetProperty("fold", "1" ) 

            # Highlight tab/space mixing (shouldn't be any)
            self.SetProperty("tab.timmy.whinge.level", "1")

            # Set left and right margins
            self.SetMargins(2,2)
    
            # Set up the numbers in the margin for margin #1
            self.SetMarginType(1, wx.stc.STC_MARGIN_NUMBER)
            # Reasonable value for, say, 4-5 digits using a mono font (40 pix)
            self.SetMarginWidth(1, 40)
    
            # Indentation and tab stuff
            self.SetIndent(4)               # Proscribed indent size for wx
            self.SetIndentationGuides(True) # Show indent guides
            self.SetBackSpaceUnIndents(True)# Backspace unindents rather than delete 1 space
            self.SetTabIndents(True)        # Tab key indents
            self.SetTabWidth(4)             # Proscribed tab size for wx
            self.SetUseTabs(False)          # Use spaces rather than tabs, or
                                            # TabTimmy will complain!    
            # White space
            self.SetViewWhiteSpace(False)   # Don't view white space
    
            # EOL: Since we are loading/saving ourselves, and the
            # strings will always have \n's in them, set the STC to
            # edit them that way.            
            self.SetEOLMode(wx.stc.STC_EOL_LF)
            self.SetViewEOL(False)
            
            # No right-edge mode indicator
            self.SetEdgeMode(stc.STC_EDGE_NONE)
    
            # Setup a margin to hold fold markers
            self.SetMarginType(2, stc.STC_MARGIN_SYMBOL)
            self.SetMarginMask(2, stc.STC_MASK_FOLDERS)
            self.SetMarginSensitive(2, True)
            self.SetMarginWidth(2, 12)
    
            # and now set up the fold markers
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEREND,     stc.STC_MARK_BOXPLUSCONNECTED,  "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPENMID, stc.STC_MARK_BOXMINUSCONNECTED, "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERMIDTAIL, stc.STC_MARK_TCORNER,  "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERTAIL,    stc.STC_MARK_LCORNER,  "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDERSUB,     stc.STC_MARK_VLINE,    "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDER,        stc.STC_MARK_BOXPLUS,  "white", "black")
            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPEN,    stc.STC_MARK_BOXMINUS, "white", "black")
    
            # Global default style
            if wx.Platform == '__WXMSW__':
                self.StyleSetSpec(stc.STC_STYLE_DEFAULT, 
                                  'fore:#000000,back:#FFFFFF,face:Courier New,size:9')
            elif wx.Platform == '__WXMAC__':
                # TODO: if this looks fine on Linux too, remove the Mac-specific case 
                # and use this whenever OS != MSW.
                self.StyleSetSpec(stc.STC_STYLE_DEFAULT, 
                                  'fore:#000000,back:#FFFFFF,face:Monaco')
            else:
                self.StyleSetSpec(stc.STC_STYLE_DEFAULT, 
                                  'fore:#000000,back:#FFFFFF,face:Courier,size:9')
    
            # Clear styles and revert to default.
            self.StyleClearAll()

            # Following style specs only indicate differences from default.
            # The rest remains unchanged.

            # Line numbers in margin
            self.StyleSetSpec(wx.stc.STC_STYLE_LINENUMBER,'fore:#000000,back:#99A9C2')    
            # Highlighted brace
            self.StyleSetSpec(wx.stc.STC_STYLE_BRACELIGHT,'fore:#00009D,back:#FFFF00')
            # Unmatched brace
            self.StyleSetSpec(wx.stc.STC_STYLE_BRACEBAD,'fore:#00009D,back:#FF0000')
            # Indentation guide
            self.StyleSetSpec(wx.stc.STC_STYLE_INDENTGUIDE, "fore:#CDCDCD")
    
            # Python styles
            self.StyleSetSpec(wx.stc.STC_P_DEFAULT, 'fore:#000000')
            # Comments
            self.StyleSetSpec(wx.stc.STC_P_COMMENTLINE,  'fore:#008000,back:#F0FFF0')
            self.StyleSetSpec(wx.stc.STC_P_COMMENTBLOCK, 'fore:#008000,back:#F0FFF0')
            # Numbers
            self.StyleSetSpec(wx.stc.STC_P_NUMBER, 'fore:#008080')
            # Strings and characters
            self.StyleSetSpec(wx.stc.STC_P_STRING, 'fore:#800080')
            self.StyleSetSpec(wx.stc.STC_P_CHARACTER, 'fore:#800080')
            # Keywords
            self.StyleSetSpec(wx.stc.STC_P_WORD, 'fore:#000080,bold')
            # Triple quotes
            self.StyleSetSpec(wx.stc.STC_P_TRIPLE, 'fore:#800080,back:#FFFFEA')
            self.StyleSetSpec(wx.stc.STC_P_TRIPLEDOUBLE, 'fore:#800080,back:#FFFFEA')
            # Class names
            self.StyleSetSpec(wx.stc.STC_P_CLASSNAME, 'fore:#0000FF,bold')
            # Function names
            self.StyleSetSpec(wx.stc.STC_P_DEFNAME, 'fore:#008080,bold')
            # Operators
            self.StyleSetSpec(wx.stc.STC_P_OPERATOR, 'fore:#800000,bold')
            # Identifiers. I leave this as not bold because everything seems
            # to be an identifier if it doesn't match the above criterae
            self.StyleSetSpec(wx.stc.STC_P_IDENTIFIER, 'fore:#000000')

            # Caret color
            self.SetCaretForeground("BLUE")
            # Selection background
            self.SetSelBackground(1, '#66CCFF')

            self.SetSelBackground(True, wx.SystemSettings_GetColour(wx.SYS_COLOUR_HIGHLIGHT))
            self.SetSelForeground(True, wx.SystemSettings_GetColour(wx.SYS_COLOUR_HIGHLIGHTTEXT))

        def RegisterModifiedEvent(self, eventHandler):
            self.Bind(wx.stc.EVT_STC_CHANGE, eventHandler)


except ImportError:
    class DemoCodeEditor(wx.TextCtrl):
        def __init__(self, parent):
            wx.TextCtrl.__init__(self, parent, -1, style =
                                 wx.TE_MULTILINE | wx.HSCROLL | wx.TE_RICH2 | wx.TE_NOHIDESEL)

        def RegisterModifiedEvent(self, eventHandler):
            self.Bind(wx.EVT_TEXT, eventHandler)

        def SetReadOnly(self, flag):
            self.SetEditable(not flag)
            # NOTE: STC already has this method
    
        def GetText(self):
            return self.GetValue()

        def GetPositionFromLine(self, line):
            return self.XYToPosition(0,line)

        def GotoLine(self, line):
            pos = self.GetPositionFromLine(line)
            self.SetInsertionPoint(pos)
            self.ShowPosition(pos)

        def SelectLine(self, line):
            start = self.GetPositionFromLine(line)
            end = start + self.GetLineLength(line)
            self.SetSelection(start, end)


#---------------------------------------------------------------------------
# Constants for module versions

modOriginal = 0
modModified = 1
modDefault = modOriginal

#---------------------------------------------------------------------------

class DemoCodePanel(wx.Panel):
    """Panel for the 'Demo Code' tab"""
    def __init__(self, parent, mainFrame):
        wx.Panel.__init__(self, parent, size=(1,1))
        if 'wxMSW' in wx.PlatformInfo:
            self.Hide()
        self.mainFrame = mainFrame
        self.editor = DemoCodeEditor(self)
        self.editor.RegisterModifiedEvent(self.OnCodeModified)

        self.btnSave = wx.Button(self, -1, "Save Changes")
        self.btnRestore = wx.Button(self, -1, "Delete Modified")
        self.btnSave.Enable(False)
        self.btnSave.Bind(wx.EVT_BUTTON, self.OnSave)
        self.btnRestore.Bind(wx.EVT_BUTTON, self.OnRestore)

        self.radioButtons = { modOriginal: wx.RadioButton(self, -1, "Original", style = wx.RB_GROUP),
                              modModified: wx.RadioButton(self, -1, "Modified") }

        self.controlBox = wx.BoxSizer(wx.HORIZONTAL)
        self.controlBox.Add(wx.StaticText(self, -1, "Active Version:"), 0,
                            wx.RIGHT | wx.LEFT | wx.ALIGN_CENTER_VERTICAL, 5)
        for modID, radioButton in self.radioButtons.items():
            self.controlBox.Add(radioButton, 0, wx.EXPAND | wx.RIGHT, 5)
            radioButton.modID = modID # makes it easier for the event handler
            radioButton.Bind(wx.EVT_RADIOBUTTON, self.OnRadioButton)
            
        self.controlBox.Add(self.btnSave, 0, wx.RIGHT, 5)
        self.controlBox.Add(self.btnRestore, 0)

        self.box = wx.BoxSizer(wx.VERTICAL)
        self.box.Add(self.controlBox, 0, wx.EXPAND)
        self.box.Add(wx.StaticLine(self), 0, wx.EXPAND)
        self.box.Add(self.editor, 1, wx.EXPAND)
        
        self.box.Fit(self)
        self.SetSizer(self.box)


    # Loads a demo from a DemoModules object
    def LoadDemo(self, demoModules):
        self.demoModules = demoModules
        if (modDefault == modModified) and demoModules.Exists(modModified):
            demoModules.SetActive(modModified)
        else:
            demoModules.SetActive(modOriginal)
        self.radioButtons[demoModules.GetActiveID()].Enable(True)
        self.ActiveModuleChanged()


    def ActiveModuleChanged(self):
        self.LoadDemoSource(self.demoModules.GetSource())
        self.UpdateControlState()
        self.mainFrame.pnl.Freeze()        
        self.ReloadDemo()
        self.mainFrame.pnl.Thaw()

        
    def LoadDemoSource(self, source):
        self.editor.Clear()
        self.editor.SetValue(source)
        self.JumpToLine(0)
        self.btnSave.Enable(False)


    def JumpToLine(self, line, highlight=False):
        self.editor.GotoLine(line)
        self.editor.SetFocus()
        if highlight:
            self.editor.SelectLine(line)
        
       
    def UpdateControlState(self):
        active = self.demoModules.GetActiveID()
        # Update the radio/restore buttons
        for moduleID in self.radioButtons:
            btn = self.radioButtons[moduleID]
            if moduleID == active:
                btn.SetValue(True)
            else:
                btn.SetValue(False)

            if self.demoModules.Exists(moduleID):
                btn.Enable(True)
                if moduleID == modModified:
                    self.btnRestore.Enable(True)
            else:
                btn.Enable(False)
                if moduleID == modModified:
                    self.btnRestore.Enable(False)

                    
    def OnRadioButton(self, event):
        radioSelected = event.GetEventObject()
        modSelected = radioSelected.modID
        if modSelected != self.demoModules.GetActiveID():
            busy = wx.BusyInfo("Reloading demo module...")
            self.demoModules.SetActive(modSelected)
            self.ActiveModuleChanged()


    def ReloadDemo(self):
        if self.demoModules.name != __name__:
            self.mainFrame.RunModule()

                
    def OnCodeModified(self, event):
        self.btnSave.Enable(self.editor.IsModified())