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Issue 296: Handle scroll wheel events separately from other mouse events
2 people starred this issue and may be notified of changes. Back to list
Status:  New
Owner:  txprog


 
Reported by allen.be...@gmail.com, Aug 6, 2010
For example, with pygame as the window provider MOUSEBUTTON 4 and 5 (scroll up and down) could generate their own events with some code like this:

   # mouse action
   elif event.type in (pygame.MOUSEBUTTONDOWN,pygame.MOUSEBUTTONUP):
      self._pygame_update_modifiers()
      x, y = event.pos
      btn = 'left'
      if event.button == 3:
         btn = 'right'
      elif event.button == 2:
         btn = 'middle'
      eventname = 'on_mouse_down'
      #Here are the two new cases to handle the scroll wheel
      if event.button == 4:
         btn = 'scroll_up'
         eventname = 'on_scroll'
      elif event.button == 5:
         btn = 'scroll_down'
         eventname = 'on_scroll'
      if event.type == pygame.MOUSEBUTTONUP:
         eventname = 'on_mouse_up'
      self.dispatch_event(eventname, x, y, btn, self.modifiers)

This would be line 145 or so in pymt.ui.window.win_pygame. And the new on_scroll event needs to be defined and registered in __init__. I'm not sure how similar the code would be for those who use glut, but I imagine it's not too different.
Aug 15, 2010
Project Member #1 txprog
(No comment was entered for this change.)
Labels: Type-Enhancement

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