diff options
| -rwxr-xr-x | examples/scene/scene.py | 4 | ||||
| -rw-r--r-- | sugar/scene/CircleLayout.py | 21 | ||||
| -rw-r--r-- | sugar/scene/Group.py | 12 | ||||
| -rw-r--r-- | sugar/scene/LayoutManager.py | 7 |
4 files changed, 44 insertions, 0 deletions
diff --git a/examples/scene/scene.py b/examples/scene/scene.py index 5468cd1..f404f6f 100755 --- a/examples/scene/scene.py +++ b/examples/scene/scene.py @@ -7,6 +7,7 @@ import gtk from sugar.scene.Stage import Stage from sugar.scene.Group import Group from sugar.scene.PixbufActor import PixbufActor +from sugar.scene.CircleLayout import CircleLayout def drawing_area_expose_cb(widget, event, stage): stage.render(widget.window) @@ -24,6 +25,9 @@ while i <= 5: icons_group.add(PixbufActor(pixbuf)) i += 1 +layout = CircleLayout(100) +icons_group.set_layout_manager(layout) + stage.add(icons_group) window = gtk.Window() diff --git a/sugar/scene/CircleLayout.py b/sugar/scene/CircleLayout.py new file mode 100644 index 0000000..eb36ee4 --- /dev/null +++ b/sugar/scene/CircleLayout.py @@ -0,0 +1,21 @@ +import math + +from sugar.scene.LayoutManager import LayoutManager + +class CircleLayout(LayoutManager): + def __init__(self, radium): + LayoutManager.__init__(self) + + self._radium = radium + + def layout_group(self, group): + step = 2 * math.pi / len(group.get_actors()) + angle = 2 * math.pi + for actor in group.get_actors(): + self._update_position(actor, angle) + angle -= step + + def _update_position(self, actor, angle): + x = math.cos(angle) * self._radium + self._radium + y = math.sin(angle) * self._radium + self._radium + actor.set_position(int(x), int(y)) diff --git a/sugar/scene/Group.py b/sugar/scene/Group.py index b845cd8..1485d11 100644 --- a/sugar/scene/Group.py +++ b/sugar/scene/Group.py @@ -3,12 +3,24 @@ from sugar.scene.Actor import Actor class Group(Actor): def __init__(self): self._actors = [] + self._layout_manager = None def add(self, actor): self._actors.append(actor) + if self._layout_manager: + self._layout_manager.layout_group(slef) def remove(self, actor): self._actors.remove(actor) + if self._layout_manager: + self._layout_manager.layout_group(self) + + def get_actors(self): + return self._actors + + def set_layout_manager(self, layout_manager): + self._layout_manager = layout_manager + self._layout_manager.layout_group(self) def render(self, drawable): for actor in self._actors: diff --git a/sugar/scene/LayoutManager.py b/sugar/scene/LayoutManager.py new file mode 100644 index 0000000..c7ada5a --- /dev/null +++ b/sugar/scene/LayoutManager.py @@ -0,0 +1,7 @@ +class LayoutManager: + def __init__(self): + pass + + def layout_group(self, group): + pass + |