Ticket #3981: 0001-Handling-gestures-to-show-hide-the-frame.patch

bin/sugar-session

@@ -111 +111 @@
     from jarabe import frame
     keyhandler.setup(frame.get_view())
 
+def setup_gesturehandler_cb():
+    logging.debug('STARTUP: setup_gesturehandler_cb')
+    from jarabe.view import gesturehandler
+    from jarabe import frame
+    gesturehandler.setup(frame.get_view())
+
 def setup_journal_cb():
     logging.debug('STARTUP: setup_journal_cb')
     from jarabe.journal import journalactivity
@@ -210 +216 @@
 
     GObject.idle_add(setup_frame_cb)
     GObject.idle_add(setup_keyhandler_cb)
+    GObject.idle_add(setup_gesturehandler_cb)
     GObject.idle_add(setup_journal_cb)
     GObject.idle_add(setup_notification_service_cb)
     GObject.idle_add(setup_file_transfer_cb)

src/jarabe/view/Makefile.am

@@ -4 +4 @@
         buddyicon.py                    \
         buddymenu.py                    \
         customizebundle.py              \
+        gesturehandler.py               \
         keyhandler.py                   \
         launcher.py                     \
         palettes.py                     \

new file src/jarabe/view/gesturehandler.py

@@ +1 @@
+# Copyright (C) 2012 One Laptop Per Child
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+from gi.repository import Gdk
+
+from gi.repository import SugarExt
+from gi.repository import SugarGestures
+
+from sugar3.graphics import style
+
+_instance = None
+
+
+class GestureHandler(object):
+    '''Handling gestures to show/hide the frame
+
+    We use SugarExt.GestureGrabber to listen for
+    gestures on the root window. Swiping from
+    the frame area towards the center does reveal
+    the Frame. Swiping from the center and ending
+    the swipe on the Frame area does hide the
+    Frame.
+
+    '''
+    def __init__(self, frame):
+        self._frame = frame
+
+        self._gesture_grabber = SugarExt.GestureGrabber()
+
+        # top, bottom, left, right
+        self._create_grabber(0, 0, Gdk.Screen.width(), style.GRID_CELL_SIZE,
+                             SugarGestures.SwipeDirection.DOWN)
+        self._create_grabber(0, Gdk.Screen.height() - style.GRID_CELL_SIZE,
+                             Gdk.Screen.width(), style.GRID_CELL_SIZE,
+                             SugarGestures.SwipeDirection.UP)
+        self._create_grabber(0, 0, style.GRID_CELL_SIZE, Gdk.Screen.height(),
+                             SugarGestures.SwipeDirection.RIGHT)
+        self._create_grabber(Gdk.Screen.width() - style.GRID_CELL_SIZE,
+                             0, style.GRID_CELL_SIZE, Gdk.Screen.height(),
+                             SugarGestures.SwipeDirection.LEFT)
+
+    def _create_grabber(self, x, y, width, height, desired_direction):
+        rect = Gdk.Rectangle()
+        rect.x = x
+        rect.y = y
+        rect.width = width
+        rect.height = height
+
+        swipe = SugarGestures.SwipeController()
+        swipe.connect('swipe-ended', self.__swipe_ended_cb,
+                      desired_direction)
+        self._gesture_grabber.add(swipe, rect)
+
+    def __swipe_ended_cb(self, controller, event_direction, desired_direction):
+        if event_direction == desired_direction:
+            self._frame.show()
+
+
+def setup(frame):
+    global _instance
+
+    if _instance:
+        del _instance
+
+    _instance = GestureHandler(frame)