122 lines
3.2 KiB
Python
122 lines
3.2 KiB
Python
import goocanvas
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import gobject
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from sugar.canvas.IconItem import IconItem
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from sugar.canvas.Grid import Grid
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class _MenuStrategy:
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def get_menu_position(self, menu, grid_x1, grid_y1, grid_x2, grid_y2):
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grid_x = grid_x2
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if grid_x + menu.get_width() > Grid.COLS:
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grid_x = grid_x1 - menu.get_width() + 1
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grid_y = grid_y1
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if grid_y < 0:
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grid_y = 0
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if grid_y + menu.get_width() > Grid.ROWS:
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grid_y = Grid.ROWS - menu.get_width()
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return [grid_x, grid_y]
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class MenuIcon(IconItem, goocanvas.Item):
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def __init__(self, menu_shell, **kwargs):
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IconItem.__init__(self, **kwargs)
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self._menu_shell = menu_shell
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self._grid = menu_shell.get_grid()
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self._menu = None
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self._hover_menu = False
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self._popdown_on_leave = False
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self._popdown_sid = 0
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self._menu_strategy = _MenuStrategy()
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def popdown(self):
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if self._menu:
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self._menu.destroy()
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self._menu = None
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self._menu_shell.set_active(None)
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def set_menu_strategy(self, strategy):
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self._menu_strategy = strategy
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def _popup(self, x1, y1, x2, y2):
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self.popdown()
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self._menu_shell.set_active(None)
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grid = self._shell.get_grid()
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self._menu = self.create_menu()
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self._menu.connect('enter-notify-event',
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self._menu_enter_notify_event_cb)
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self._menu.connect('leave-notify-event',
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self._menu_leave_notify_event_cb)
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[grid_x1, grid_y1] = grid.convert_from_screen(x1, y1)
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[grid_x2, grid_y2] = grid.convert_from_screen(x2, y2)
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strategy = self._menu_strategy
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[grid_x, grid_y] = strategy.get_menu_position(self._menu,
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grid_x1, grid_y1,
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grid_x2, grid_y2)
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grid.set_constraints(self._menu, grid_x, grid_y,
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self._menu.get_width(), self._menu.get_height())
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self._menu.show()
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self._menu_shell.set_active(self)
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def _menu_enter_notify_event_cb(self, widget, event):
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self._hover_menu = True
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def _menu_leave_notify_event_cb(self, widget, event):
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self._hover_menu = False
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if self._popdown_on_leave:
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self.popdown()
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def do_create_view(self, canvas, parent_view):
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view = IconItem.do_create_view(self, canvas, parent_view)
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view.connect('enter-notify-event', self._enter_notify_event_cb, canvas)
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view.connect('leave-notify-event', self._leave_notify_event_cb)
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return view
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def _start_popdown_timeout(self):
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self._stop_popdown_timeout()
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self._popdown_sid = gobject.timeout_add(1000, self._popdown_timeout_cb)
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def _stop_popdown_timeout(self):
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if self._popdown_sid > 0:
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gobject.source_remove(self._popdown_sid)
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self._popdown_sid = 0
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def _enter_notify_event_cb(self, view, target, event, canvas):
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self._stop_popdown_timeout()
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[x1, y1] = canvas.convert_to_pixels(view.get_bounds().x1,
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view.get_bounds().y1)
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[x2, y2] = canvas.convert_to_pixels(view.get_bounds().x2,
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view.get_bounds().y2)
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[window_x, window_y] = canvas.window.get_origin()
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x1 += window_x
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y1 += window_y
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x2 += window_x
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y2 += window_y
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self._popup(int(x1), int(y1), int(x2), int(y2))
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def _popdown_timeout_cb(self):
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self._popdown_sid = 0
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if not self._hover_menu:
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self.popdown()
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else:
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self._popdown_on_leave = True
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return False
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def _leave_notify_event_cb(self, view, target, event):
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self._start_popdown_timeout()
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