我们从Python开源项目中，提取了以下20个代码示例，用于说明如何使用wx.EmptyBitmap()。
def resize(self, event=None): """Handle wx resize events. Notes: This method may be called outside the wx event buffer in order to initialize the panel or reset the drawing buffer. """ size = self.winWidth, self.winHeight = self.GetSize() if size != self.lastSize: # hack to mitigate multiple consecutive resize events self.winRadius = min((self.winWidth/2.0, self.winHeight/2.0)) #self.drawingBuffer = wx.Bitmap(self.winWidth, self.winHeight) # wxpython3 self.drawingBuffer = wx.EmptyBitmap(self.winWidth, self.winHeight) # wxpython3 self.lastSize = size self.refresh() if event is not None: event.Skip()
def __init__(self, parent=None, id=-1, title=None): wx.Frame.__init__(self, parent, id, title) self.MainPanel = wx.Panel(self, size=(640, 480)) self.MainPanel.SetBackgroundColour('WHITE') self.panel = wx.Panel(self.MainPanel, size = (640,480)) self.panel.SetBackgroundColour('WHITE') mainSizer = wx.BoxSizer(wx.VERTICAL) mainSizer.Add(self.panel) self.SetSizer(mainSizer) self.Fit() self.Bind(wx.EVT_CLOSE, self.CloseWindow) self.World = None self.cdc = wx.ClientDC(self.panel) w, h = self.panel.GetSize() self.bmp = wx.EmptyBitmap(w,h) self.timer = wx.Timer(self) self.Bind(wx.EVT_TIMER, self.OnTimer) self.timer.Start(20)
def updatelastpic(self, lframe): capsdir = self.capsfolder_box.GetValue() last_pic = str(capsdir + cap_files[lframe]) if os.path.exists(last_pic): last_pic = wx.Image(last_pic, wx.BITMAP_TYPE_ANY) last_pic = self.scale_pic(last_pic, 500) self.last_pic.SetBitmap(wx.BitmapFromImage(last_pic)) lpicdate = self.date_from_fn(cap_files[lframe]) self.lpic_text.SetLabel('Frame ' + str(lframe) + ' - ' + str(lpicdate)) else: self.last_pic.SetBitmap(wx.EmptyBitmap(10,10)) self.fpic_text.SetLabel('end')
def updatefirstpic(self, fframe): capsdir = self.capsfolder_box.GetValue() first_pic = str(capsdir + cap_files[fframe]) if os.path.exists(first_pic): first_pic = wx.Image(first_pic, wx.BITMAP_TYPE_ANY) first_pic = self.scale_pic(first_pic, 500) fpicdate = self.date_from_fn(cap_files[fframe]) self.fpic_text.SetLabel('Frame ' + str(fframe) + ' - ' + str(fpicdate)) self.first_pic.SetBitmap(wx.BitmapFromImage(first_pic)) else: self.first_pic.SetBitmap(wx.EmptyBitmap(10,10)) self.fpic_text.SetLabel('start')
def saveImage(canvas, filename): s = wx.ScreenDC() w, h = canvas.size.Get() b = wx.EmptyBitmap(w, h) m = wx.MemoryDCFromDC(s) m.SelectObject(b) m.Blit(0, 0, w, h, s, 70, 0) m.SelectObject(wx.NullBitmap) b.SaveFile(filename, wx.BITMAP_TYPE_PNG)
def initBuffer(self): w,h = self.GetClientSize() #???? self.buffer = wx.EmptyBitmap(w,h) #????buffer,????BufferedDC???
def RefreshView(self): width, height = self.MessagePanel.GetClientSize() bitmap = wx.EmptyBitmap(width, height) dc = wx.BufferedDC(wx.ClientDC(self.MessagePanel), bitmap) dc.Clear() dc.BeginDrawing() if self.CurrentMessage is not None: dc.SetFont(self.Font) for button in self.LeftButtons + self.RightButtons: button.Draw(dc) message_idx = self.CurrentMessage message = self.LogMessages[message_idx] draw_date = True offset = 5 while offset < height and message is not None: message.Draw(dc, offset, width, draw_date) offset += message.GetHeight(draw_date) previous_message, message_idx = self.GetPreviousMessage(message_idx) if previous_message is not None: draw_date = message.Date != previous_message.Date message = previous_message dc.EndDrawing() self.MessageScrollBar.RefreshThumbPosition()
def __init__(self, parent, ID, bitmapname, pos=wx.DefaultPosition, size=wx.DefaultSize, style=0, name="genstatbmp"): bitmap = GetBitmap(bitmapname) if bitmap is None: bitmap = wx.EmptyBitmap(0, 0) wx.StaticBitmap.__init__(self, parent, ID, bitmap, pos, size, style, name)
def GetLogicalDC(self, buffered=False): if buffered: bitmap = wx.EmptyBitmap(*self.Editor.GetClientSize()) dc = wx.MemoryDC(bitmap) else: dc = wx.ClientDC(self.Editor) dc.SetFont(self.GetFont()) if wx.VERSION >= (2, 6, 0): self.Editor.DoPrepareDC(dc) else: self.Editor.PrepareDC(dc) dc.SetUserScale(self.ViewScale[0], self.ViewScale[1]) return dc
def GetBitmap(bmp_name1, bmp_name2=None, size=None): bmp = BitmapLibrary.get((bmp_name1, bmp_name2, size)) if bmp is not None: return bmp if bmp_name2 is None: bmp = SearchBitmap(bmp_name1) else: # Bitmap with two icon bmp1 = SearchBitmap(bmp_name1) bmp2 = SearchBitmap(bmp_name2) if bmp1 is not None and bmp2 is not None: # Calculate bitmap size width = bmp1.GetWidth() + bmp2.GetWidth() - 1 height = max(bmp1.GetHeight(), bmp2.GetHeight()) # Create bitmap with both icons bmp = wx.EmptyBitmap(width, height) dc = wx.MemoryDC() dc.SelectObject(bmp) dc.Clear() dc.DrawBitmap(bmp1, 0, 0) dc.DrawBitmap(bmp2, bmp1.GetWidth() - 1, 0) dc.Destroy() elif bmp1 is not None: bmp = bmp1 elif bmp2 is not None: bmp = bmp2 if bmp is not None: BitmapLibrary[(bmp_name1, bmp_name2, size)] = bmp return bmp
def OnSize(self, event): # The buffer is initialized in here, so that the buffer is always # the same size as the Window. width, height = self.GetClientSizeTuple() # Make new off-screen bitmap: this bitmap will always have the # current drawing in it, so it can be used to save the image to # a file, or whatever. if width and height: # Macs can generate events with 0-size values self._buffer = wx.EmptyBitmap(width, height) self.UpdateDrawing()
def __init__(self, parent=None, id=-1, title=None): wx.Frame.__init__(self, parent, id, title) self.panel = wx.Panel(self, size=(640, 480)) self.panel.SetBackgroundColour('WHITE') self.Fit() self.A = Agent(self.panel, 150, 100 ) self.greenB = [Ball(rnd.randint(40, 600),rnd.randint(40, 440), wx.Colour(112,173,71), property = 1) for i in range(0, 15)] self.redB = [Ball(rnd.randint(40, 600),rnd.randint(40, 440), wx.Colour(237,125,49), property = 2) for i in range(0, 10)] # OutrBox self.Box = Walls(640, 480, 0, 480) self.Box.addPoint(0,0) self.Box.addPoint(640,0) self.Box.addPoint(640,480) # Wall in the world self.WallA = Walls(96, 90, 256, 90) self.WallA.addPoint(256, 390) self.WallA.addPoint(96,390) self.Bind(wx.EVT_CLOSE, self.CloseWindow) self.cdc = wx.ClientDC(self.panel) w, h = self.panel.GetSize() self.bmp = wx.EmptyBitmap(w,h) self.timer = wx.Timer(self) self.Bind(wx.EVT_TIMER, self.OnTimer) self.timer.Start(20)
def create_background(self): w,h = self.GetSize() self.background_bitmap = wx.EmptyBitmap(w, h) dc = wx.MemoryDC(self.background_bitmap) gc = wx.GraphicsContext_Create(dc) dc.SetBrush(wx.Brush("#FFFFFF")) dc.Clear() dc.DrawRectangle(0,0,w,h) off = h // self.chnls // 2 gc.SetPen(wx.Pen('#000000', width=1, style=wx.SOLID)) gc.SetBrush(wx.Brush("#FFFFFF", style=wx.TRANSPARENT)) dc.SetTextForeground("#444444") if sys.platform in "darwin": font, ptsize = dc.GetFont(), dc.GetFont().GetPointSize() font.SetPointSize(ptsize - 3) dc.SetFont(font) else: font = dc.GetFont() font.SetPointSize(8) dc.SetFont(font) tickstep = w // 10 if tickstep < 40: timelabel = "%.1f" elif tickstep < 80: timelabel = "%.2f" elif tickstep < 120: timelabel = "%.3f" else: timelabel = "%.4f" timestep = (self.end - self.begin) * 0.1 for i, samples in enumerate(self.img): y = h // self.chnls * i if len(samples): gc.DrawLines(samples) dc.SetPen(wx.Pen('#888888', width=1, style=wx.DOT)) dc.DrawLine(0, y+off, w, y+off) # for j in range(10): # dc.SetPen(wx.Pen('#888888', width=1, style=wx.DOT)) # dc.DrawLine(j*tickstep, 0, j*tickstep, h) # dc.DrawText(timelabel % (self.begin+j*timestep), j*tickstep+2, h-y-12) dc.SetPen(wx.Pen('#000000', width=1)) dc.DrawLine(0, h-y, w, h-y) dc.SelectObject(wx.NullBitmap)
def blank_settings(self): print("clearing settings") # clear system pannel text system_info_pnl.sys_hdd_total.SetLabel("") system_info_pnl.sys_hdd_remain.SetLabel("") system_info_pnl.sys_hdd_used.SetLabel("") system_info_pnl.sys_pigrow_folder.SetLabel("") system_info_pnl.sys_os_name.SetLabel("") #system_info_pnl.sys_pigrow_version.SetLabel("") system_info_pnl.sys_pigrow_update.SetLabel("") system_info_pnl.sys_network_name.SetLabel("") system_info_pnl.wifi_list.SetLabel("") system_info_pnl.sys_power_status.SetLabel("") system_info_pnl.sys_camera_info.SetLabel("") system_info_pnl.sys_pi_revision.SetLabel("") system_info_pnl.sys_pi_date.SetLabel("") system_info_pnl.sys_pc_date.SetLabel("") #system_info_pnl.sys_time_diff.SetLabel("") # clear config ctrl text and tables try: MainApp.config_ctrl_pannel.dirlocs_dict.clear() MainApp.config_ctrl_pannel.config_dict.clear() MainApp.config_ctrl_pannel.gpio_dict.clear() MainApp.config_ctrl_pannel.gpio_on_dict.clear() except: pass MainApp.config_info_pannel.gpio_table.DeleteAllItems() config_info_pnl.boxname_text.SetValue("") config_info_pnl.location_text.SetLabel("") config_info_pnl.config_text.SetLabel("") config_info_pnl.lamp_text.SetLabel("") config_info_pnl.dht_text.SetLabel("") # clear cron tables cron_list_pnl.startup_cron.DeleteAllItems() cron_list_pnl.repeat_cron.DeleteAllItems() cron_list_pnl.timed_cron.DeleteAllItems() # clear local files text and images localfiles_info_pnl.cron_info.SetLabel("") localfiles_info_pnl.local_path_txt.SetLabel("") localfiles_info_pnl.folder_text.SetLabel("") ## check this updates on reconnect localfiles_info_pnl.photo_text.SetLabel("") localfiles_info_pnl.first_photo_title.SetLabel("") localfiles_info_pnl.last_photo_title.SetLabel("") blank = wx.EmptyBitmap(220, 220) try: localfiles_info_pnl.photo_folder_first_pic.SetBitmap(blank) localfiles_info_pnl.photo_folder_last_pic.SetBitmap(blank) except: pass # clear local file info localfiles_info_pnl.local_path = "" localfiles_info_pnl.config_files.DeleteAllItems() localfiles_info_pnl.logs_files.DeleteAllItems()
def RefreshView(self): self.RefreshCanvasPosition() width, height = self.GraphicsWindow.GetVirtualSize() bitmap = wx.EmptyBitmap(width, height) dc = wx.BufferedDC(wx.ClientDC(self.GraphicsWindow), bitmap) dc.Clear() dc.BeginDrawing() if self.DraggingAxesPanel is not None: destBBox = self.DraggingAxesBoundingBox srcBBox = self.DraggingAxesPanel.GetAxesBoundingBox() srcBmp = _convert_agg_to_wx_bitmap(self.DraggingAxesPanel.get_renderer(), None) srcDC = wx.MemoryDC() srcDC.SelectObject(srcBmp) dc.Blit(destBBox.x, destBBox.y, int(destBBox.width), int(destBBox.height), srcDC, srcBBox.x, srcBBox.y) dc.EndDrawing() if not self.Fixed or self.Force: self.Force = False refresh_graphics = True else: refresh_graphics = False if self.DraggingAxesPanel is not None and self.DraggingAxesPanel not in self.GraphicPanels: self.DraggingAxesPanel.RefreshViewer(refresh_graphics) for panel in self.GraphicPanels: if isinstance(panel, DebugVariableGraphicViewer): panel.RefreshViewer(refresh_graphics) else: panel.RefreshViewer() if self.CursorTick is not None: tick = self.CursorTick elif len(self.Ticks) > 0: tick = self.Ticks[-1] else: tick = None if tick is not None: self.TickLabel.SetLabel(label=_("Tick: %d") % tick) tick_duration = int(tick * self.Ticktime) not_null = False duration = "" for value, format in [(tick_duration / DAY, _("%dd")), ((tick_duration % DAY) / HOUR, _("%dh")), ((tick_duration % HOUR) / MINUTE, _("%dm")), ((tick_duration % MINUTE) / SECOND, _("%ds"))]: if value > 0 or not_null: duration += format % value not_null = True duration += _("%03gms") % (float(tick_duration % SECOND) / MILLISECOND) self.TickTimeLabel.SetLabel("t: %s" % duration) else: self.TickLabel.SetLabel("") self.TickTimeLabel.SetLabel("") self.TickSizer.Layout()
def RefreshViewer(self): """ Method that refresh the content displayed by Viewer """ # Create buffered DC for drawing in panel width, height = self.GetSize() bitmap = wx.EmptyBitmap(width, height) dc = wx.BufferedDC(wx.ClientDC(self), bitmap) dc.Clear() # Get Graphics Context for DC, for anti-aliased and transparent # rendering gc = wx.GCDC(dc) gc.BeginDrawing() # Get first item item = self.ItemsDict.values()[0] # Get item variable path masked according Debug Variable Panel mask item_path = item.GetVariable( self.ParentWindow.GetVariableNameMask()) # Draw item variable path at Viewer left side w, h = gc.GetTextExtent(item_path) gc.DrawText(item_path, 20, (height - h) / 2) # Update 'Release' button state and text color according to item forced # flag value item_forced = item.IsForced() self.Buttons[1].Enable(item_forced) self.RefreshButtonsPosition() if item_forced: gc.SetTextForeground(wx.BLUE) # Draw item current value at right side of Viewer item_value = item.GetValue() w, h = gc.GetTextExtent(item_value) gc.DrawText(item_value, width - 40 - w, (height - h) / 2) # Draw other Viewer common elements self.DrawCommonElements(gc) gc.EndDrawing()
def onTakeScreenShot(self, event): """ Takes a screenshot of the screen at give pos & size (rect). Method based on a script by Andrea Gavana """ print('Taking screenshot...') rect = self.GetRect() # adjust widths for Linux (figured out by John Torres # http://article.gmane.org/gmane.comp.python.wxpython/67327) if sys.platform == 'linux2': client_x, client_y = self.ClientToScreen((0, 0)) border_width = client_x - rect.x title_bar_height = client_y - rect.y rect.width += (border_width * 2) rect.height += title_bar_height + border_width # Create a DC for the whole screen area dcScreen = wx.ScreenDC() # Create a Bitmap that will hold the screenshot image later on # Note that the Bitmap must have a size big enough to hold the screenshot # -1 means using the current default colour depth bmp = wx.EmptyBitmap(rect.width, rect.height) #Create a memory DC that will be used for actually taking the screenshot memDC = wx.MemoryDC() # Tell the memory DC to use our Bitmap # all drawing action on the memory DC will go to the Bitmap now memDC.SelectObject(bmp) # Blit (in this case copy) the actual screen on the memory DC # and thus the Bitmap memDC.Blit( 0, # Copy to this X coordinate 0, # Copy to this Y coordinate rect.width, # Copy this width rect.height, # Copy this height dcScreen, # Where to copy from rect.x, # What's the X offset in the original DC? rect.y # What's the Y offset in the original DC? ) # Select the Bitmap out of the memory DC by selecting a new # uninitialized Bitmap memDC.SelectObject(wx.NullBitmap) img = bmp.ConvertToImage() fileName = "myImage.png" img.SaveFile(fileName, wx.BITMAP_TYPE_PNG) print('...saving as png!')
def __init__(self, parent=None, id=-1, title=None): wx.Frame.__init__(self, parent, id, title) self.MainPanel = wx.Panel(self, size=(640, 640)) self.MainPanel.SetBackgroundColour('WHITE') self.panel = wx.Panel(self.MainPanel, size = (640,480)) self.panel.SetBackgroundColour('WHITE') self.plotter = plot.PlotCanvas(self.MainPanel, size =(640, 640-480)) self.plotter.SetEnableZoom(False) self.plotter.SetEnableLegend(True) self.plotter.SetFontSizeLegend(10.5) mainSizer = wx.BoxSizer(wx.VERTICAL) mainSizer.Add(self.panel) mainSizer.Add(self.plotter) self.SetSizer(mainSizer) self.Fit() self.A = Agent(self.panel, 240, 49 ) self.B = Agent(self.panel, 240, 49) self.B.B_color = wx.Colour(112,173,71) # OutrBox self.Box = Walls(640, 479, 0, 479) self.Box.addPoint(0,0) self.Box.addPoint(640,0) self.Box.addPoint(640,479) # Oval Course Rad = 190.0 Poly = 16 self.Course = Walls(240, 50, 640-(50+Rad),50) for i in range(1, Poly): self.Course.addPoint(Rad*math.cos(-np.pi/2.0 + np.pi*i/Poly)+640-(50+Rad), Rad*math.sin(-np.pi/2.0 + np.pi*i/Poly)+50+Rad) self.Course.addPoint(240, 50+Rad*2) for i in range(1, Poly): self.Course.addPoint(Rad*math.cos(np.pi/2.0 + np.pi*i/Poly)+(50+Rad), Rad*math.sin(np.pi/2.0 + np.pi*i/Poly)+50+Rad) self.Course.addPoint(240,50) self.Bind(wx.EVT_CLOSE, self.CloseWindow) self.cdc = wx.ClientDC(self.panel) w, h = self.panel.GetSize() self.bmp = wx.EmptyBitmap(w,h) self.timer = wx.Timer(self) self.Bind(wx.EVT_TIMER, self.OnTimer) self.timer.Start(20) self.i = 0 self.tmp_sum = 0.0 self.data = []
def __init__(self, parent=None, id=-1, title=None): wx.Frame.__init__(self, parent, id, title) self.MainPanel = wx.Panel(self, size=(640, 640)) self.MainPanel.SetBackgroundColour('WHITE') self.panel = wx.Panel(self.MainPanel, size = (640,480)) self.panel.SetBackgroundColour('WHITE') self.plotter = plot.PlotCanvas(self.MainPanel, size =(640, 640-480)) self.plotter.SetEnableZoom(False) self.plotter.SetEnableLegend(True) self.plotter.SetFontSizeLegend(10.5) mainSizer = wx.BoxSizer(wx.VERTICAL) mainSizer.Add(self.panel) mainSizer.Add(self.plotter) self.SetSizer(mainSizer) self.Fit() self.A = Agent(self.panel, 150, 100 ) self.B = Agent(self.panel, 400, 300, model = self.A.model) self.C = Agent(self.panel, 400, 150, model = self.A.model) self.D = Agent(self.panel, 320, 240, model = self.A.model) self.greenB = [Ball(rnd.randint(40, 600),rnd.randint(40, 440), wx.Colour(112,173,71), property = 1) for i in range(0, 15)] self.redB = [Ball(rnd.randint(40, 600),rnd.randint(40, 440), wx.Colour(237,125,49), property = 2) for i in range(0, 10)] # OutrBox self.Box = Walls(640, 480, 0, 480) self.Box.addPoint(0,0) self.Box.addPoint(640,0) self.Box.addPoint(640,480) # Wall in the world self.WallA = Walls(96, 90, 256, 90) self.WallA.addPoint(256, 390) self.WallA.addPoint(96,390) self.Bind(wx.EVT_CLOSE, self.CloseWindow) self.cdc = wx.ClientDC(self.panel) w, h = self.panel.GetSize() self.bmp = wx.EmptyBitmap(w,h) self.timer = wx.Timer(self) self.Bind(wx.EVT_TIMER, self.OnTimer) self.timer.Start(20) self.i = 0 self.tmp_sum = 0.0 self.data = []
