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import hippo
from sugar.graphics.grid import Grid
class MenuStrategy:
def _get_canvas(self, item):
canvas = item
while (not isinstance(canvas, hippo.Canvas)):
canvas = canvas.get_context()
return canvas
def _get_item_origin(self, canvas, item):
[x, y] = item.get_context().translate_to_widget(item)
[origin_x, origin_y] = canvas.window.get_origin()
x += origin_x
y += origin_y
return [x, y]
def get_menu_position(self, menu, item):
canvas = self._get_canvas(item)
[x, y] = self._get_item_origin(canvas, item)
[width, height] = item.get_allocation()
[canvas_x, canvas_y] = canvas.window.get_origin()
canvas_rect = canvas.get_allocation()
[menu_w, menu_h] = menu.size_request()
menu_x = x
menu_y = y + height
if (menu_x + menu_w > canvas_x) and \
(menu_y < canvas_y + canvas_rect.height):
menu_x = x - menu_w
menu_y = y
return [menu_x, menu_y]
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