Viewer.py 文件源码

def UpdateScrollPos(self, event):
        if (event.Dragging() and self.SelectedElement is not None) or self.rubberBand.IsShown():
            position = event.GetPosition()
            move_window = wx.Point()
            window_size = self.Editor.GetClientSize()
            xstart, ystart = self.GetViewStart()
            if position.x < SCROLL_ZONE and xstart > 0:
                move_window.x = -1
            elif position.x > window_size[0] - SCROLL_ZONE:
                move_window.x = 1
            if position.y < SCROLL_ZONE and ystart > 0:
                move_window.y = -1
            elif position.y > window_size[1] - SCROLL_ZONE:
                move_window.y = 1
            if move_window.x != 0 or move_window.y != 0:
                self.RefreshVisibleElements(xp=xstart + move_window.x, yp=ystart + move_window.y)
                self.Scroll(xstart + move_window.x, ystart + move_window.y)
                self.RefreshScrollBars(move_window.x, move_window.y)