wxpython编程之画板(一个不错的研究的完整示例)

现在的位置: 首页 > 综合 > 正文

RSS

wxpython编程之画板(一个不错的研究的完整示例)

2013年05月28日 ⁄ 综合 ⁄ 共 8165字 ⁄ 字号小中大 ⁄ 评论关闭

这是一个完整的画图板demo ,觉得很不错

更详细的介绍，参见：资源下载中的wxpython教程的第6章

本demo中用到的图片：

open.png:

save.png:

new.png:

splash.png:

splash

源代码：
import wx import wx.html import cPickle import os from wx.lib import buttons from example1 import SketchWindow class SketchFrame(wx.Frame): def __init__(self, parent): self.title = "Sketch Frame" wx.Frame.__init__(self, parent, -1, self.title, size=(800,600)) self.filename = "" self.sketch = SketchWindow(self, -1) self.sketch.SetMinSize((10,10)) wx.EVT_MOTION(self.sketch, self.OnSketchMotion) self.initStatusBar() self.createMenuBar() self.createToolBar() self.createPanel() def createPanel(self): controlPanel = ControlPanel(self, -1, self.sketch) box = wx.BoxSizer(wx.HORIZONTAL) box.Add(controlPanel, 0, wx.EXPAND) box.Add(self.sketch, 1, wx.EXPAND) self.SetSizer(box) def initStatusBar(self): self.statusbar = self.CreateStatusBar() self.statusbar.SetFieldsCount(3) self.statusbar.SetStatusWidths([-1, -2, -3]) def OnSketchMotion(self, event): self.statusbar.SetStatusText("Pos: %s" % str(event.GetPositionTuple()), 0) self.statusbar.SetStatusText("Current Pts: %s" % len(self.sketch.curLine), 1) self.statusbar.SetStatusText("Line Count: %s" % len(self.sketch.lines), 2) event.Skip() def menuData(self): return [("&File", ( ("&New", "New Sketch file", self.OnNew), ("&Open", "Open sketch file", self.OnOpen), ("&Save", "Save sketch file", self.OnSave), ("", "", ""), ("&Color", ( ("&Black", "", self.OnColor, wx.ITEM_RADIO), ("&Red", "", self.OnColor, wx.ITEM_RADIO), ("&Green", "", self.OnColor, wx.ITEM_RADIO), ("&Blue", "", self.OnColor, wx.ITEM_RADIO), ("&Other...", "", self.OnOtherColor, wx.ITEM_RADIO))), ("", "", ""), ("About...", "Show about window", self.OnAbout), ("&Quit", "Quit", self.OnCloseWindow)))] def createMenuBar(self): menuBar = wx.MenuBar() for eachMenuData in self.menuData(): menuLabel = eachMenuData[0] menuItems = eachMenuData[1] menuBar.Append(self.createMenu(menuItems), menuLabel) self.SetMenuBar(menuBar) def createMenu(self, menuData): menu = wx.Menu() for eachItem in menuData: if len(eachItem) == 2: label = eachItem[0] subMenu = self.createMenu(eachItem[1]) menu.AppendMenu(wx.NewId(), label, subMenu) else: self.createMenuItem(menu, *eachItem) return menu def createMenuItem(self, menu, label, status, handler, kind=wx.ITEM_NORMAL): if not label: menu.AppendSeparator() return menuItem = menu.Append(-1, label, status, kind) self.Bind(wx.EVT_MENU, handler, menuItem) def createToolBar(self): toolbar = self.CreateToolBar() for each in self.toolbarData(): self.createSimpleTool(toolbar, *each) toolbar.AddSeparator() for each in self.toolbarColorData(): self.createColorTool(toolbar, each) toolbar.Realize() def createSimpleTool(self, toolbar, label, filename, help, handler): if not label: toolbar.AddSeparator() return bmp = wx.Image(filename, wx.BITMAP_TYPE_BMP).ConvertToBitmap() tool = toolbar.AddSimpleTool(-1, bmp, label, help) self.Bind(wx.EVT_MENU, handler, tool) def toolbarData(self): return (("New", "new.png", "Create new sketch", self.OnNew), ("", "", "", ""), ("Open", "open.png", "Open existing sketch", self.OnOpen), ("Save", "save.png", "Save existing sketch", self.OnSave)) def createColorTool(self, toolbar, color): bmp = self.MakeBitmap(color) tool = toolbar.AddRadioTool(-1, bmp, shortHelp=color) self.Bind(wx.EVT_MENU, self.OnColor, tool) def MakeBitmap(self, color): bmp = wx.EmptyBitmap(16, 15) dc = wx.MemoryDC() dc.SelectObject(bmp) dc.SetBackground(wx.Brush(color)) dc.Clear() dc.SelectObject(wx.NullBitmap) return bmp def toolbarColorData(self): return ("Black", "Red", "Green", "Blue") def OnNew(self, event): pass def OnColor(self, event): menubar = self.GetMenuBar() itemId = event.GetId() item = menubar.FindItemById(itemId) if not item: toolbar = self.GetToolBar() item = toolbar.FindById(itemId) color = item.GetShortHelp() else: color = item.GetLabel() self.sketch.SetColor(color) def OnCloseWindow(self, event): self.Destroy() def SaveFile(self): if self.filename: data = self.sketch.GetLinesData() f = open(self.filename, 'w') cPickle.dump(data, f) f.close() def ReadFile(self): if self.filename: try: f = open(self.filename, 'r') data = cPickle.load(f) f.close() self.sketch.SetLinesData(data) except cPickle.UnpicklingError: wx.MessageBox("%s is not a sketch file." % self.filename, "oops!", style=wx.OK|wx.ICON_EXCLAMATION) wildcard = "Sketch files (*.sketch)|*.sketch|All files (*.*)|*.*" def OnOpen(self, event): dlg = wx.FileDialog(self, "Open sketch file...", os.getcwd(), style=wx.OPEN, wildcard=self.wildcard) if dlg.ShowModal() == wx.ID_OK: self.filename = dlg.GetPath() self.ReadFile() self.SetTitle(self.title + ' -- ' + self.filename) dlg.Destroy() def OnSave(self, event): if not self.filename: self.OnSaveAs(event) else: self.SaveFile() def OnSaveAs(self, event): dlg = wx.FileDialog(self, "Save sketch as...", os.getcwd(), style=wx.SAVE | wx.OVERWRITE_PROMPT, wildcard = self.wildcard) if dlg.ShowModal() == wx.ID_OK: filename = dlg.GetPath() if not os.path.splitext(filename)[1]: filename = filename + '.sketch' self.filename = filename self.SaveFile() self.SetTitle(self.title + ' -- ' + self.filename) dlg.Destroy() def OnOtherColor(self, event): dlg = wx.ColourDialog(self) dlg.GetColourData().SetChooseFull(True) if dlg.ShowModal() == wx.ID_OK: self.sketch.SetColor(dlg.GetColourData().GetColour()) dlg.Destroy() def OnAbout(self, event): dlg = SketchAbout(self) dlg.ShowModal() dlg.Destroy() class SketchAbout(wx.Dialog): text = ''' <html> <body bgcolor="#ACAA60"> <center><table bgcolor="#455481" width="100%" cellspacing="0" cellpadding="0" border="1"> <tr> <td align="center"><h1>Sketch!</h1></td> </tr> </table> </center> Sketch is a demonstration program for wxPython In Action Chapter 7. It is based on the SuperDoodle demo included with wxPython, available at http://www.wxpython.org/ SuperDoodle and wxPython are brought to you by Robin Dunn and Total Control Software, Copyright © 1997-2006. </body> </html> ''' def __init__(self, parent): wx.Dialog.__init__(self, parent, -1, 'About Sketch', size=(440, 400) ) html = wx.html.HtmlWindow(self) html.SetPage(self.text) button = wx.Button(self, wx.ID_OK, "Okay") sizer = wx.BoxSizer(wx.VERTICAL) sizer.Add(html, 1, wx.EXPAND|wx.ALL, 5) sizer.Add(button, 0, wx.ALIGN_CENTER|wx.ALL, 5) self.SetSizer(sizer) self.Layout() class ControlPanel(wx.Panel): BMP_SIZE = 16 BMP_BORDER = 3 NUM_COLS = 4 SPACING = 4 colorList = ('Black', 'Yellow', 'Red', 'Green', 'Blue', 'Purple', 'Brown', 'Aquamarine', 'Forest Green', 'Light Blue', 'Goldenrod', 'Cyan', 'Orange', 'Navy', 'Dark Grey', 'Light Grey') maxThickness = 16 def __init__(self, parent, ID, sketch): wx.Panel.__init__(self, parent, ID, style=wx.RAISED_BORDER) self.sketch = sketch buttonSize = (self.BMP_SIZE + 2 * self.BMP_BORDER, self.BMP_SIZE + 2 * self.BMP_BORDER) colorGrid = self.createColorGrid(parent, buttonSize) thicknessGrid = self.createThicknessGrid(buttonSize) self.layout(colorGrid, thicknessGrid) def createColorGrid(self, parent, buttonSize): self.colorMap = {} self.colorButtons = {} colorGrid = wx.GridSizer(cols=self.NUM_COLS, hgap=2, vgap=2) for eachColor in self.colorList: bmp = parent.MakeBitmap(eachColor) b = buttons.GenBitmapToggleButton(self, -1, bmp, size=buttonSize) b.SetBezelWidth(1) b.SetUseFocusIndicator(False) self.Bind(wx.EVT_BUTTON, self.OnSetColour, b) colorGrid.Add(b, 0) self.colorMap[b.GetId()] = eachColor self.colorButtons[eachColor] = b self.colorButtons[self.colorList[0]].SetToggle(True) return colorGrid def createThicknessGrid(self, buttonSize): self.thicknessIdMap = {} self.thicknessButtons = {} thicknessGrid = wx.GridSizer(cols=self.NUM_COLS, hgap=2, vgap=2) for x in range(1, self.maxThickness + 1): b = buttons.GenToggleButton(self, -1, str(x), size=buttonSize) b.SetBezelWidth(1) b.SetUseFocusIndicator(False) self.Bind(wx.EVT_BUTTON, self.OnSetThickness, b) thicknessGrid.Add(b, 0) self.thicknessIdMap[b.GetId()] = x self.thicknessButtons[x] = b self.thicknessButtons[1].SetToggle(True) return thicknessGrid def layout(self, colorGrid, thicknessGrid): box = wx.BoxSizer(wx.VERTICAL) box.Add(colorGrid, 0, wx.ALL, self.SPACING) box.Add(thicknessGrid, 0, wx.ALL, self.SPACING) self.SetSizer(box) box.Fit(self) def OnSetColour(self, event): color = self.colorMap[event.GetId()] if color != self.sketch.color and self.sketch.color in self.colorButtons: self.colorButtons[self.sketch.color].SetToggle(False) self.sketch.SetColor(color) def OnSetThickness(self, event): thickness = self.thicknessIdMap[event.GetId()] if thickness != self.sketch.thickness: self.thicknessButtons[self.sketch.thickness].SetToggle(False) self.sketch.SetThickness(thickness) class SketchApp(wx.App): def OnInit(self): bmp = wx.Image("splash.png").ConvertToBitmap() wx.SplashScreen(bmp, wx.SPLASH_CENTRE_ON_SCREEN | wx.SPLASH_TIMEOUT, 1000, None, -1) wx.Yield() frame = SketchFrame(None) frame.Show(True) self.SetTopWindow(frame) return True if __name__ == '__main__': app = SketchApp(False) app.MainLoop()

【上篇】浮点数在存储器中的表示与计算
【下篇】epoll使用详解

作者: maduro

该日志由 maduro 于11年前发表在综合分类下，最后更新于 2013年05月28日.
转载请注明: wxpython编程之画板(一个不错的研究的完整示例) | 学步园 +复制链接

抱歉!评论已关闭.

学步园