Add menu.py

1 files changed, 54 insertions, 0 deletions

diff --git a/panel/menu.py b/panel/menu.py
new file mode 100644
index 0000000..f57cc95
--- /dev/null
+++ b/panel/menu.py
@@ -0,0 +1,54 @@
+# vim:set noet ts=4:
+#
+# ibus - The Input Bus
+#
+# Copyright (c) 2007-2008 Huang Peng <shawn.p.huang@gmail.com>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+# Boston, MA  02111-1307  USA
+
+def menu_position (menu, button):
+	screen = button.get_screen ()
+	monitor = screen.get_monitor_at_window (button.window)
+	monitor_allocation = screen.get_monitor_geometry (monitor)
+
+	x, y = button.window.get_origin ()
+	x += button.allocation.x
+	y += button.allocation.y
+
+	menu_width, menu_height = menu.size_request ()
+
+	if x + menu_width >= monitor_allocation.width:
+		x -= menu_width - button.allocation.width
+	elif x - menu_width <= 0:
+		pass
+	else:
+		if x <= monitor_allocation.width * 3 / 4:
+			pass
+		else:
+			x -= menu_width - button.allocation.width
+
+	if y + button.allocation.height + menu_height >= monitor_allocation.height:
+		y -= menu_height
+	elif y - menu_height <= 0:
+		y += button.allocation.height
+	else:
+		if y <= monitor_allocation.height * 3 / 4:
+			y += button.allocation.height
+		else:
+			y -= menu_height
+
+	return (x, y, False)
+