class SpreadLayout(gobject.GObject, hippo.CanvasLayout):
__gtype_name__ = 'SugarSpreadLayout'
def __init__(self):
gobject.GObject.__init__(self)
self._box = None
min_width, width = self.do_get_width_request()
min_height, height = self.do_get_height_request(width)
self._grid = Grid(int(width / _CELL_SIZE), int(height / _CELL_SIZE))
self._grid.connect('child-changed', self._grid_child_changed_cb)
def add(self, child):
self._box.append(child)
width, height = self._get_child_grid_size(child)
self._grid.add(child, width, height)
def remove(self, child):
self._grid.remove(child)
self._box.remove(child)
def move(self, child, x, y):
self._grid.move(child, x / _CELL_SIZE, y / _CELL_SIZE, locked=True)
def do_set_box(self, box):
self._box = box
def do_get_height_request(self, for_width):
return 0, gtk.gdk.screen_height() - style.GRID_CELL_SIZE
def do_get_width_request(self):
return 0, gtk.gdk.screen_width()
def do_allocate(self, x, y, width, height,
req_width, req_height, origin_changed):
for child in self._box.get_layout_children():
# We need to always get requests to not confuse hippo
min_w, child_width = child.get_width_request()
min_h, child_height = child.get_height_request(child_width)
rect = self._grid.get_child_rect(child.item)
child.allocate(int(round(rect.x * _CELL_SIZE)),
int(round(rect.y * _CELL_SIZE)),
child_width,
child_height,
origin_changed)
def _get_child_grid_size(self, child):
min_width, width = child.get_width_request()
min_height, height = child.get_height_request(width)
width = math.ceil(width / _CELL_SIZE)
height = math.ceil(height / _CELL_SIZE)
return int(width), int(height)
def _grid_child_changed_cb(self, grid, child):
child.emit_request_changed()
class ViewLayout(Layout):
def __init__(self):
self._grid = None
self._width = 0
self._height = 0
def setup(self, allocation, owner_icon, activity_icon=None):
if self._grid is not None:
if self._width == allocation.width and \
self._height == allocation.height:
return
self._width = allocation.width
self._height = allocation.height
self._grid = Grid(int(allocation.width / _CELL_SIZE),
int(allocation.height / _CELL_SIZE))
self._grid.connect('child-changed', self.__grid_child_changed_cb)
self._allocate_owner_icon(allocation, owner_icon, activity_icon)
def _allocate_owner_icon(self, allocation, owner_icon, activity_icon):
# add owner icon to the grid, precisely centered on the screen
# if not None, add an activity icon directly below the owner icon
owner_request = owner_icon.size_request()
owner_width, owner_height = owner_request.width, owner_request.height
height = allocation.height + allocation.y
width = allocation.width
# Find vertical center point of screen
y = height / 2
# This container may be offset from the top by a certain amount
# (e.g. for a toolbar at the top of the screen). Adjust the
# center-point for that
y -= allocation.y
# Now subtract half of the owner height. This gives us the y
# coordinate for the top of the owner icon.
y -= owner_height / 2
# calculate x coordinate and create allocation
owner_icon_allocation = Gdk.Rectangle()
owner_icon_allocation.x = (width - owner_width) / 2
owner_icon_allocation.y = allocation.y + y
owner_icon_allocation.width = owner_width
owner_icon_allocation.height = owner_height
owner_icon.size_allocate(owner_icon_allocation)
# Determine grid coordinates and add to grid
owner_grid_width, owner_grid_height = \
self._get_child_grid_size(owner_icon)
grid_x = int(owner_icon_allocation.x / float(_CELL_SIZE))
grid_y = int(owner_icon_allocation.y / float(_CELL_SIZE))
self._grid.add(owner_icon, owner_grid_width, owner_grid_height,
grid_x, grid_y, locked=True)
if activity_icon is None:
return
# Position the current activity below the XO icon
# FIXME must ensure we cross into next grid cell here..
activity_request = activity_icon.size_request()
activity_icon_allocation = Gdk.Rectangle()
activity_icon_allocation.x = (width - activity_request.width) / 2
activity_icon_allocation.y = owner_icon_allocation.y + owner_height
activity_icon_allocation.width = activity_request.width
activity_icon_allocation.height = activity_request.height
activity_icon.size_allocate(activity_icon_allocation)
# Determine grid coordinates and add to grid
activity_grid_width, activity_grid_height = \
self._get_child_grid_size(activity_icon)
x = int(activity_icon_allocation.x / float(_CELL_SIZE))
y = int(activity_icon_allocation.y / float(_CELL_SIZE))
self._grid.add(activity_icon, activity_grid_width,
activity_grid_height, x, y, locked=True)
def allocate_children(self, allocation, children):
pass
def move_icon(self, child, x, y, allocation):
pass
def move(self, child, x, y, allocation=None):
self._grid.move(child, x / _CELL_SIZE, y / _CELL_SIZE, locked=True)
child_request = child.size_request()
rect = self._grid.get_child_rect(child)
child_allocation = Gdk.Rectangle()
child_allocation.x = int(round(rect.x * _CELL_SIZE))
child_allocation.y = int(round(rect.y * _CELL_SIZE))
child_allocation.width = child_request.width
child_allocation.height = child_request.height
child.size_allocate(child_allocation)
def _get_child_grid_size(self, child):
request = child.size_request()
width = math.ceil(request.width / _CELL_SIZE)
height = math.ceil(request.height / _CELL_SIZE)
return int(width), int(height)
def __grid_child_changed_cb(self, grid, child):
request = child.size_request()
rect = self._grid.get_child_rect(child)
child_allocation = Gdk.Rectangle()
child_allocation.x = int(round(rect.x * _CELL_SIZE))
child_allocation.y = int(round(rect.y * _CELL_SIZE))
child_allocation.width = request.width
child_allocation.height = request.height
child.size_allocate(child_allocation)
class RandomActivityLayout(ActivityLayout):
"""Lay out icons randomly; try to nudge them around to resolve overlaps."""
__gtype_name__ = 'RandomActivityLayout'
icon_name = 'view-freeform'
"""Name of icon used in home view dropdown palette."""
key = 'random-layout'
"""String used in profile to represent this view."""
# TRANS: label for the freeform layout in the pathway view
palette_name = _('Freeform')
"""String used to identify this layout in home view dropdown palette."""
def __init__(self):
ActivityLayout.__init__(self)
min_width_, width = self.do_get_width_request()
min_height_, height = self.do_get_height_request(width)
self._grid = Grid(width / _CELL_SIZE, height / _CELL_SIZE)
self._grid.connect('child-changed', self.__grid_child_changed_cb)
def __grid_child_changed_cb(self, grid, child):
child.emit_request_changed()
def append(self, icon, locked=False):
ActivityLayout.append(self, icon, locked)
min_width_, child_width = icon.get_width_request()
min_height_, child_height = icon.get_height_request(child_width)
min_width_, width = self.box.get_width_request()
min_height_, height = self.box.get_height_request(width)
if icon in self.fixed_positions:
x, y = self.fixed_positions[icon]
x = min(x, width - child_width)
y = min(y, height - child_height)
elif hasattr(icon, 'get_bundle_id'):
name_hash = hashlib.md5(icon.get_bundle_id())
x = int(name_hash.hexdigest()[:5], 16) % (width - child_width)
y = int(name_hash.hexdigest()[-5:], 16) % (height - child_height)
else:
x = None
y = None
if x is None or y is None:
self._grid.add(icon, child_width / _CELL_SIZE,
child_height / _CELL_SIZE)
else:
self._grid.add(icon, child_width / _CELL_SIZE,
child_height / _CELL_SIZE, x / _CELL_SIZE,
y / _CELL_SIZE)
def remove(self, icon):
self._grid.remove(icon)
ActivityLayout.remove(self, icon)
def move_icon(self, icon, x, y, locked=False):
self._grid.move(icon, x / _CELL_SIZE, y / _CELL_SIZE, locked)
ActivityLayout.move_icon(self, icon, x, y, locked)
def do_allocate(self, x, y, width, height, req_width, req_height,
origin_changed):
for child in self.box.get_layout_children():
# We need to always get requests to not confuse hippo
min_w_, child_width = child.get_width_request()
min_h_, child_height = child.get_height_request(child_width)
rect = self._grid.get_child_rect(child.item)
child.allocate(rect.x * _CELL_SIZE, rect.y * _CELL_SIZE,
child_width, child_height, origin_changed)
def allow_dnd(self):
return True
class ViewLayout(Layout):
def __init__(self):
self._grid = None
self._width = 0
self._height = 0
def setup(self, allocation, owner_icon, activity_icon=None):
if self._grid is not None:
if self._width == allocation.width and \
self._height == allocation.height:
return
self._width = allocation.width
self._height = allocation.height
self._grid = Grid(int(allocation.width / _CELL_SIZE),
int(allocation.height / _CELL_SIZE))
self._grid.connect('child-changed', self.__grid_child_changed_cb)
self._allocate_owner_icon(allocation, owner_icon, activity_icon)
def _allocate_owner_icon(self, allocation, owner_icon, activity_icon):
# add owner icon to the grid, precisely centered on the screen
# if not None, add an activity icon directly below the owner icon
owner_request = owner_icon.size_request()
owner_width, owner_height = owner_request.width, owner_request.height
height = allocation.height + allocation.y
width = allocation.width
# Find vertical center point of screen
y = height / 2
# This container may be offset from the top by a certain amount
# (e.g. for a toolbar at the top of the screen). Adjust the
# center-point for that
y -= allocation.y
# Now subtract half of the owner height. This gives us the y
# coordinate for the top of the owner icon.
y -= owner_height / 2
# calculate x coordinate and create allocation
owner_icon_allocation = Gdk.Rectangle()
owner_icon_allocation.x = (width - owner_width) / 2
owner_icon_allocation.y = allocation.y + y
owner_icon_allocation.width = owner_width
owner_icon_allocation.height = owner_height
owner_icon.size_allocate(owner_icon_allocation)
# Determine grid coordinates and add to grid
owner_grid_width, owner_grid_height = \
self._get_child_grid_size(owner_icon)
grid_x = int(owner_icon_allocation.x / float(_CELL_SIZE))
grid_y = int(owner_icon_allocation.y / float(_CELL_SIZE))
self._grid.add(owner_icon,
owner_grid_width,
owner_grid_height,
grid_x,
grid_y,
locked=True)
if activity_icon is None:
return
# Position the current activity below the XO icon
# FIXME must ensure we cross into next grid cell here..
activity_request = activity_icon.size_request()
activity_icon_allocation = Gdk.Rectangle()
activity_icon_allocation.x = (width - activity_request.width) / 2
activity_icon_allocation.y = owner_icon_allocation.y + owner_height
activity_icon_allocation.width = activity_request.width
activity_icon_allocation.height = activity_request.height
activity_icon.size_allocate(activity_icon_allocation)
# Determine grid coordinates and add to grid
activity_grid_width, activity_grid_height = \
self._get_child_grid_size(activity_icon)
x = int(activity_icon_allocation.x / float(_CELL_SIZE))
y = int(activity_icon_allocation.y / float(_CELL_SIZE))
self._grid.add(activity_icon,
activity_grid_width,
activity_grid_height,
x,
y,
locked=True)
def allocate_children(self, allocation, children):
pass
def move_icon(self, child, x, y, allocation):
pass
def move(self, child, x, y, allocation=None):
self._grid.move(child, x / _CELL_SIZE, y / _CELL_SIZE, locked=True)
child_request = child.size_request()
rect = self._grid.get_child_rect(child)
child_allocation = Gdk.Rectangle()
child_allocation.x = int(round(rect.x * _CELL_SIZE))
child_allocation.y = int(round(rect.y * _CELL_SIZE))
child_allocation.width = child_request.width
child_allocation.height = child_request.height
child.size_allocate(child_allocation)
def _get_child_grid_size(self, child):
request = child.size_request()
width = math.ceil(request.width / _CELL_SIZE)
height = math.ceil(request.height / _CELL_SIZE)
return int(width), int(height)
def __grid_child_changed_cb(self, grid, child):
request = child.size_request()
rect = self._grid.get_child_rect(child)
child_allocation = Gdk.Rectangle()
child_allocation.x = int(round(rect.x * _CELL_SIZE))
child_allocation.y = int(round(rect.y * _CELL_SIZE))
child_allocation.width = request.width
child_allocation.height = request.height
child.size_allocate(child_allocation)
class RandomLayout(FavoritesLayout):
"""Lay out icons randomly; try to nudge them around to resolve overlaps."""
__gtype_name__ = 'RandomLayout'
icon_name = 'view-freeform'
"""Name of icon used in home view dropdown palette."""
key = 'random-layout'
"""String used in profile to represent this view."""
# TRANS: label for the freeform layout in the favorites view
palette_name = _('Freeform')
"""String used to identify this layout in home view dropdown palette."""
def __init__(self):
FavoritesLayout.__init__(self)
min_width_, width = self.do_get_width_request()
min_height_, height = self.do_get_height_request(width)
self._grid = Grid(width / _CELL_SIZE, height / _CELL_SIZE)
self._grid.connect('child-changed', self.__grid_child_changed_cb)
def __grid_child_changed_cb(self, grid, child):
child.emit_request_changed()
def append(self, icon, locked=False):
FavoritesLayout.append(self, icon, locked)
min_width_, child_width = icon.get_width_request()
min_height_, child_height = icon.get_height_request(child_width)
min_width_, width = self.box.get_width_request()
min_height_, height = self.box.get_height_request(width)
if icon in self.fixed_positions:
x, y = self.fixed_positions[icon]
x = min(x, width - child_width)
y = min(y, height - child_height)
elif hasattr(icon, 'get_bundle_id'):
name_hash = hashlib.md5(icon.get_bundle_id())
x = int(name_hash.hexdigest()[:5], 16) % (width - child_width)
y = int(name_hash.hexdigest()[-5:], 16) % (height - child_height)
else:
x = None
y = None
if x is None or y is None:
self._grid.add(icon,
child_width / _CELL_SIZE, child_height / _CELL_SIZE)
else:
self._grid.add(icon,
child_width / _CELL_SIZE, child_height / _CELL_SIZE,
x / _CELL_SIZE, y / _CELL_SIZE)
def remove(self, icon):
self._grid.remove(icon)
FavoritesLayout.remove(self, icon)
def move_icon(self, icon, x, y, locked=False):
self._grid.move(icon, x / _CELL_SIZE, y / _CELL_SIZE, locked)
FavoritesLayout.move_icon(self, icon, x, y, locked)
def do_allocate(self, x, y, width, height, req_width, req_height,
origin_changed):
for child in self.box.get_layout_children():
# We need to always get requests to not confuse hippo
min_w_, child_width = child.get_width_request()
min_h_, child_height = child.get_height_request(child_width)
rect = self._grid.get_child_rect(child.item)
child.allocate(rect.x * _CELL_SIZE,
rect.y * _CELL_SIZE,
child_width,
child_height,
origin_changed)
def allow_dnd(self):
return True