src/pgu/gui/menus.py

   1 """
   2 """
   3 from const import *
   4 import table
   5 import basic, button
   6
   7 class _Menu_Options(table.Table):
   8     def __init__(self,menu,**params):
   9         table.Table.__init__(self,**params)
  10
  11         self.menu = menu
  12
  13     def event(self,e):
  14         handled = False
  15         arect = self.get_abs_rect()
  16
  17         if e.type == MOUSEMOTION:
  18             abspos = e.pos[0]+arect.x,e.pos[1]+arect.y
  19             for w in self.menu.container.widgets:
  20                 if not w is self.menu:
  21                     mrect = w.get_abs_rect()
  22                     if mrect.collidepoint(abspos):
  23                         self.menu._close(None)
  24                         w._open(None)
  25                         handled = True
  26
  27         if not handled: table.Table.event(self,e)
  28
  29 class _Menu(button.Button):
  30     def __init__(self,parent,widget=None,**params): #TODO widget= could conflict with module widget
  31         params.setdefault('cls','menu')
  32         button.Button.__init__(self,widget,**params)
  33
  34         self.parent = parent
  35
  36         self._cls = self.cls
  37         self.options = _Menu_Options(self, cls=self.cls+".options")
  38
  39         self.connect(CLICK,self._open,None)
  40
  41         self.pos = 0
  42
  43     def _open(self,value):
  44         self.parent.value = self
  45         self.pcls = 'down'
  46
  47         self.repaint()
  48         self.container.open(self.options,self.rect.x,self.rect.bottom)
  49         self.options.connect(BLUR,self._close,None)
  50         self.options.focus()
  51         self.repaint()
  52
  53     def _pass(self,value):
  54         pass
  55
  56     def _close(self,value):
  57         self.pcls = ''
  58         self.parent.value = None
  59         self.repaint()
  60         self.options.close()
  61
  62     def _value(self,value):
  63         self._close(None)
  64         if value['fnc'] != None:
  65             value['fnc'](value['value'])
  66
  67     def event(self,e):
  68         button.Button.event(self,e)
  69
  70         if self.parent.value == self:
  71             self.pcls = 'down'
  72
  73     def add(self,w,fnc=None,value=None):
  74         w.style.align = -1
  75         b = button.Button(w,cls=self.cls+".option")
  76         b.connect(CLICK,self._value,{'fnc':fnc,'value':value})
  77
  78         self.options.tr()
  79         self.options.add(b)
  80
  81         return b
  82
  83 class Menus(table.Table):
  84     """A drop down menu bar.
  85
  86     <pre>Menus(data)</pre>
  87
  88     <dl>
  89     <dt>data<dd>Menu data, a list of (path,fnc,value), see example below
  90     </dl>
  91
  92     <strong>Example</strong>
  93     <code>
  94     data = [
  95         ('File/Save',fnc_save,None),
  96         ('File/New',fnc_new,None),
  97         ('Edit/Copy',fnc_copy,None),
  98         ('Edit/Cut',fnc_cut,None),
  99         ('Help/About',fnc_help,help_about_content),
 100         ('Help/Reference',fnc_help,help_reference_content),
 101         ]
 102     w = Menus(data)
 103     """
 104
 105     def __init__(self,data,menu_cls='menu',**params):
 106         params.setdefault('cls','menus')
 107         table.Table.__init__(self,**params)
 108
 109         self.value = None
 110
 111         n,m,mt = 0,None,None
 112         for path,cmd,value in data:
 113             parts = path.split("/")
 114             if parts[0] != mt:
 115                 mt = parts[0]
 116                 m = _Menu(self,basic.Label(mt,cls=menu_cls+".label"),cls=menu_cls)
 117                 self.add(m,n,0)
 118                 n += 1
 119             m.add(basic.Label(parts[1],cls=m.cls+".option.label"),cmd,value)