2571247b80
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@25142 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
404 lines
13 KiB
Python
404 lines
13 KiB
Python
# superdoodle.py
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"""
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This module implements the SuperDoodle demo application. It takes the
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DoodleWindow previously presented and reuses it in a much more
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intelligent Frame. This one has a menu and a statusbar, is able to
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save and reload doodles, clear the workspace, and has a simple control
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panel for setting color and line thickness in addition to the popup
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menu that DoodleWindow provides. There is also a nice About dialog
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implmented using an wx.html.HtmlWindow.
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"""
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import wx # This module uses the new wx namespace
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import wx.html
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from wx.lib import buttons # for generic button classes
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from doodle import DoodleWindow
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import os, cPickle
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#----------------------------------------------------------------------
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wx.RegisterId(5000) # Give a high starting value for the IDs, just for kicks
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idNEW = wx.NewId()
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idOPEN = wx.NewId()
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idSAVE = wx.NewId()
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idSAVEAS = wx.NewId()
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idCLEAR = wx.NewId()
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idEXIT = wx.NewId()
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idABOUT = wx.NewId()
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class DoodleFrame(wx.Frame):
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"""
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A DoodleFrame contains a DoodleWindow and a ControlPanel and manages
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their layout with a wx.BoxSizer. A menu and associated event handlers
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provides for saving a doodle to a file, etc.
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"""
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title = "Do a doodle"
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def __init__(self, parent):
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wx.Frame.__init__(self, parent, -1, self.title, size=(800,600),
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style=wx.DEFAULT_FRAME_STYLE | wx.NO_FULL_REPAINT_ON_RESIZE)
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self.CreateStatusBar()
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self.MakeMenu()
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self.filename = None
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self.doodle = DoodleWindow(self, -1)
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cPanel = ControlPanel(self, -1, self.doodle)
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# Create a sizer to layout the two windows side-by-side.
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# Both will grow vertically, the doodle window will grow
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# horizontally as well.
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box = wx.BoxSizer(wx.HORIZONTAL)
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box.Add(cPanel, 0, wx.EXPAND)
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box.Add(self.doodle, 1, wx.EXPAND)
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# Tell the frame that it should layout itself in response to
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# size events.
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self.SetAutoLayout(True)
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self.SetSizer(box)
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def SaveFile(self):
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if self.filename:
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data = self.doodle.GetLinesData()
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f = open(self.filename, 'w')
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cPickle.dump(data, f)
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f.close()
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def ReadFile(self):
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if self.filename:
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try:
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f = open(self.filename, 'r')
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data = cPickle.load(f)
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f.close()
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self.doodle.SetLinesData(data)
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except cPickle.UnpicklingError:
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wx.MessageBox("%s is not a doodle file." % self.filename,
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"oops!", style=wx.OK|wx.ICON_EXCLAMATION)
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def MakeMenu(self):
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# create the file menu
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menu1 = wx.Menu()
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# Using the "\tKeyName" syntax automatically creates a
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# wx.AcceleratorTable for this frame and binds the keys to
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# the menu items.
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menu1.Append(idOPEN, "&Open\tCtrl-O", "Open a doodle file")
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menu1.Append(idSAVE, "&Save\tCtrl-S", "Save the doodle")
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menu1.Append(idSAVEAS, "Save &As", "Save the doodle in a new file")
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menu1.AppendSeparator()
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menu1.Append(idCLEAR, "&Clear", "Clear the current doodle")
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menu1.AppendSeparator()
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menu1.Append(idEXIT, "E&xit", "Terminate the application")
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# and the help menu
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menu2 = wx.Menu()
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menu2.Append(idABOUT, "&About\tCtrl-H", "Display the gratuitous 'about this app' thingamajig")
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# and add them to a menubar
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menuBar = wx.MenuBar()
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menuBar.Append(menu1, "&File")
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menuBar.Append(menu2, "&Help")
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self.SetMenuBar(menuBar)
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self.Bind(wx.EVT_MENU, self.OnMenuOpen, id=idOPEN)
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self.Bind(wx.EVT_MENU, self.OnMenuSave, id=idSAVE)
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self.Bind(wx.EVT_MENU, self.OnMenuSaveAs, id=idSAVEAS)
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self.Bind(wx.EVT_MENU, self.OnMenuClear, id=idCLEAR)
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self.Bind(wx.EVT_MENU, self.OnMenuExit, id=idEXIT)
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self.Bind(wx.EVT_MENU, self.OnMenuAbout, id=idABOUT)
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wildcard = "Doodle files (*.ddl)|*.ddl|All files (*.*)|*.*"
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def OnMenuOpen(self, event):
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dlg = wx.FileDialog(self, "Open doodle file...", os.getcwd(),
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style=wx.OPEN, wildcard = self.wildcard)
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if dlg.ShowModal() == wx.ID_OK:
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self.filename = dlg.GetPath()
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self.ReadFile()
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self.SetTitle(self.title + ' -- ' + self.filename)
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dlg.Destroy()
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def OnMenuSave(self, event):
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if not self.filename:
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self.OnMenuSaveAs(event)
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else:
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self.SaveFile()
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def OnMenuSaveAs(self, event):
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dlg = wx.FileDialog(self, "Save doodle as...", os.getcwd(),
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style=wx.SAVE | wx.OVERWRITE_PROMPT,
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wildcard = self.wildcard)
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if dlg.ShowModal() == wx.ID_OK:
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filename = dlg.GetPath()
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if not os.path.splitext(filename)[1]:
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filename = filename + '.ddl'
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self.filename = filename
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self.SaveFile()
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self.SetTitle(self.title + ' -- ' + self.filename)
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dlg.Destroy()
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def OnMenuClear(self, event):
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self.doodle.SetLinesData([])
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self.SetTitle(self.title)
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def OnMenuExit(self, event):
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self.Close()
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def OnMenuAbout(self, event):
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dlg = DoodleAbout(self)
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dlg.ShowModal()
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dlg.Destroy()
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#----------------------------------------------------------------------
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class ControlPanel(wx.Panel):
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"""
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This class implements a very simple control panel for the DoodleWindow.
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It creates buttons for each of the colours and thickneses supported by
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the DoodleWindow, and event handlers to set the selected values. There is
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also a little window that shows an example doodleLine in the selected
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values. Nested sizers are used for layout.
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"""
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BMP_SIZE = 16
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BMP_BORDER = 3
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def __init__(self, parent, ID, doodle):
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wx.Panel.__init__(self, parent, ID, style=wx.RAISED_BORDER)
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numCols = 4
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spacing = 4
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btnSize = wx.Size(self.BMP_SIZE + 2*self.BMP_BORDER,
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self.BMP_SIZE + 2*self.BMP_BORDER)
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# Make a grid of buttons for each colour. Attach each button
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# event to self.OnSetColour. The button ID is the same as the
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# key in the colour dictionary.
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self.clrBtns = {}
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colours = doodle.menuColours
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keys = colours.keys()
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keys.sort()
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cGrid = wx.GridSizer(cols=numCols, hgap=2, vgap=2)
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for k in keys:
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bmp = self.MakeBitmap(colours[k])
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b = buttons.GenBitmapToggleButton(self, k, bmp, size=btnSize )
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b.SetBezelWidth(1)
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b.SetUseFocusIndicator(False)
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self.Bind(wx.EVT_BUTTON, self.OnSetColour, b)
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cGrid.Add(b, 0)
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self.clrBtns[colours[k]] = b
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self.clrBtns[colours[keys[0]]].SetToggle(True)
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# Make a grid of buttons for the thicknesses. Attach each button
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# event to self.OnSetThickness. The button ID is the same as the
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# thickness value.
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self.thknsBtns = {}
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tGrid = wx.GridSizer(cols=numCols, hgap=2, vgap=2)
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for x in range(1, doodle.maxThickness+1):
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b = buttons.GenToggleButton(self, x, str(x), size=btnSize)
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b.SetBezelWidth(1)
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b.SetUseFocusIndicator(False)
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self.Bind(wx.EVT_BUTTON, self.OnSetThickness, b)
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tGrid.Add(b, 0)
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self.thknsBtns[x] = b
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self.thknsBtns[1].SetToggle(True)
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# Make a colour indicator window, it is registerd as a listener
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# with the doodle window so it will be notified when the settings
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# change
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ci = ColourIndicator(self)
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doodle.AddListener(ci)
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doodle.Notify()
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self.doodle = doodle
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# Make a box sizer and put the two grids and the indicator
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# window in it.
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box = wx.BoxSizer(wx.VERTICAL)
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box.Add(cGrid, 0, wx.ALL, spacing)
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box.Add(tGrid, 0, wx.ALL, spacing)
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box.Add(ci, 0, wx.EXPAND|wx.ALL, spacing)
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self.SetSizer(box)
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self.SetAutoLayout(True)
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# Resize this window so it is just large enough for the
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# minimum requirements of the sizer.
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box.Fit(self)
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def MakeBitmap(self, colour):
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"""
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We can create a bitmap of whatever we want by simply selecting
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it into a wx.MemoryDC and drawing on it. In this case we just set
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a background brush and clear the dc.
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"""
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bmp = wx.EmptyBitmap(self.BMP_SIZE, self.BMP_SIZE)
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dc = wx.MemoryDC()
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dc.SelectObject(bmp)
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dc.SetBackground(wx.Brush(colour))
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dc.Clear()
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dc.SelectObject(wx.NullBitmap)
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return bmp
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def OnSetColour(self, event):
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"""
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Use the event ID to get the colour, set that colour in the doodle.
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"""
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colour = self.doodle.menuColours[event.GetId()]
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if colour != self.doodle.colour:
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# untoggle the old colour button
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self.clrBtns[self.doodle.colour].SetToggle(False)
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# set the new colour
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self.doodle.SetColour(colour)
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def OnSetThickness(self, event):
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"""
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Use the event ID to set the thickness in the doodle.
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"""
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thickness = event.GetId()
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if thickness != self.doodle.thickness:
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# untoggle the old thickness button
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self.thknsBtns[self.doodle.thickness].SetToggle(False)
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# set the new colour
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self.doodle.SetThickness(thickness)
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#----------------------------------------------------------------------
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class ColourIndicator(wx.Window):
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"""
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An instance of this class is used on the ControlPanel to show
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a sample of what the current doodle line will look like.
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"""
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def __init__(self, parent):
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wx.Window.__init__(self, parent, -1, style=wx.SUNKEN_BORDER)
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self.SetBackgroundColour(wx.WHITE)
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self.SetSize( (-1, 45) )
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self.colour = self.thickness = None
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self.Bind(wx.EVT_PAINT, self.OnPaint)
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def Update(self, colour, thickness):
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"""
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The doodle window calls this method any time the colour
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or line thickness changes.
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"""
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self.colour = colour
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self.thickness = thickness
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self.Refresh() # generate a paint event
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def OnPaint(self, event):
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"""
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This method is called when all or part of the window needs to be
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redrawn.
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"""
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dc = wx.PaintDC(self)
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if self.colour:
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sz = self.GetClientSize()
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pen = wx.Pen(self.colour, self.thickness)
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dc.BeginDrawing()
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dc.SetPen(pen)
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dc.DrawLine((10, sz.height/2), (sz.width-10, sz.height/2))
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dc.EndDrawing()
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#----------------------------------------------------------------------
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class DoodleAbout(wx.Dialog):
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""" An about box that uses an HTML window """
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text = '''
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<html>
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<body bgcolor="#ACAA60">
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<center><table bgcolor="#455481" width="100%" cellspacing="0"
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cellpadding="0" border="1">
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<tr>
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<td align="center"><h1>SuperDoodle</h1></td>
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</tr>
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</table>
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</center>
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<p><b>SuperDoodle</b> is a demonstration program for <b>wxPython</b> that
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will hopefully teach you a thing or two. Just follow these simple
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instructions: </p>
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<p>
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<ol>
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<li><b>Read</b> the Source...
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<li><b>Learn</b>...
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<li><b>Do!</b>
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</ol>
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<p><b>SuperDoodle</b> and <b>wxPython</b> are brought to you by
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<b>Robin Dunn</b> and <b>Total Control Software</b>, Copyright
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© 1997-2003.</p>
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</body>
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</html>
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'''
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def __init__(self, parent):
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wx.Dialog.__init__(self, parent, -1, 'About SuperDoodle',
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size=(420, 380) )
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html = wx.html.HtmlWindow(self, -1)
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html.SetPage(self.text)
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button = wx.Button(self, wx.ID_OK, "Okay")
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# constraints for the html window
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lc = wx.LayoutConstraints()
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lc.top.SameAs(self, wx.Top, 5)
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lc.left.SameAs(self, wx.Left, 5)
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lc.bottom.SameAs(button, wx.Top, 5)
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lc.right.SameAs(self, wx.Right, 5)
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html.SetConstraints(lc)
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# constraints for the button
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lc = wx.LayoutConstraints()
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lc.bottom.SameAs(self, wx.Bottom, 5)
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lc.centreX.SameAs(self, wx.CentreX)
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lc.width.AsIs()
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lc.height.AsIs()
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button.SetConstraints(lc)
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self.SetAutoLayout(True)
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self.Layout()
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self.CentreOnParent(wx.BOTH)
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#----------------------------------------------------------------------
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class DoodleApp(wx.App):
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def OnInit(self):
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frame = DoodleFrame(None)
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frame.Show(True)
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self.SetTopWindow(frame)
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return True
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#----------------------------------------------------------------------
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if __name__ == '__main__':
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app = DoodleApp(0)
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app.MainLoop()
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