LDViewer.py 文件源码

def OnChar(self, event):
        if self.GetDrawingMode() == FREEDRAWING_MODE:
            Viewer.OnChar(self, event)
        else:
            xpos, ypos = self.GetScrollPos(wx.HORIZONTAL), self.GetScrollPos(wx.VERTICAL)
            xmax = self.GetScrollRange(wx.HORIZONTAL) - self.GetScrollThumb(wx.HORIZONTAL)
            ymax = self.GetScrollRange(wx.VERTICAL) - self.GetScrollThumb(wx.VERTICAL)
            keycode = event.GetKeyCode()
            if keycode == wx.WXK_DELETE and self.SelectedElement:
                if self.IsBlock(self.SelectedElement):
                    self.SelectedElement.Delete()
                elif self.IsWire(self.SelectedElement):
                    self.DeleteWire(self.SelectedElement)
                elif isinstance(self.SelectedElement, Graphic_Group):
                    all_wires = True
                    for element in self.SelectedElement.GetElements():
                        all_wires &= self.IsWire(element)
                    if all_wires:
                        self.DeleteWire(self.SelectedElement)
                    else:
                        self.SelectedElement.Delete()
                self.RefreshBuffer()
                self.RefreshScrollBars()
                self.Refresh(False)
            elif keycode == wx.WXK_LEFT:
                if event.ControlDown() and event.ShiftDown():
                    self.Scroll(0, ypos)
                elif event.ControlDown():
                    self.Scroll(max(0, xpos - 1), ypos)
            elif keycode == wx.WXK_RIGHT:
                if event.ControlDown() and event.ShiftDown():
                    self.Scroll(xmax, ypos)
                elif event.ControlDown():
                    self.Scroll(min(xpos + 1, xmax), ypos)
            elif keycode == wx.WXK_UP:
                if event.ControlDown() and event.ShiftDown():
                    self.Scroll(xpos, 0)
                elif event.ControlDown():
                    self.Scroll(xpos, max(0, ypos - 1))
            elif keycode == wx.WXK_DOWN:
                if event.ControlDown() and event.ShiftDown():
                    self.Scroll(xpos, ymax)
                elif event.ControlDown():
                    self.Scroll(xpos, min(ypos + 1, ymax))
            else:
                event.Skip()

    # -------------------------------------------------------------------------------
    #                  Model adding functions from Drop Target
    # -------------------------------------------------------------------------------