def __init__(self):
super(ClutterScope, self).__init__()
self.graticule = Graticule()
self.add_actor(self.graticule)
#self.set_reactive(True)
self.traces = []
layout = Clutter.BoxLayout()
layout.set_vertical(False)
layout.set_use_animations(True)
layout.set_easing_duration(100)
layout.set_spacing(4)
label_box = Clutter.Box()
label_box.set_layout_manager(layout)
self.add_actor(label_box)
label_box.set_position(0, 0)
constraint = Clutter.BindConstraint()
constraint.set_coordinate(Clutter.BindCoordinate.WIDTH)
label_box.add_constraint(constraint)
# Add some traces (just for looks)
tr = Trace()
tr.set_position(0, -50)
self.graticule.add_actor(tr)
self.traces += [tr]
label_box.add_actor(TraceLabel(tr))
tr.set_name('H1:DMT-STRAIN')
tr = Trace()
tr.set_color(color_from_string('magenta'))
self.graticule.add_actor(tr)
self.traces += [tr]
label_box.add_actor(TraceLabel(tr))
tr.set_name('L1:DMT-STRAIN')
tr = Trace()
tr.set_color(color_from_string('yellow'))
tr.set_position(0, 50)
self.graticule.add_actor(tr)
self.traces += [tr]
label_box.add_actor(TraceLabel(tr))
tr.set_name('A1:DMT-STRAIN')
# State for event signal handlers
self.selected_trace = self.traces[0]
self.__last_scroll_time = 0
self.__drag_origin = None
def create_scroll_actor(stage):
scroll = Clutter.ScrollActor(name='scroll')
scroll.set_position(0, 18)
scroll.add_constraint(
Clutter.AlignConstraint(source=stage,
align_axis=Clutter.AlignAxis.X_AXIS,
factor=0.5))
scroll.add_constraint(
Clutter.BindConstraint(source=stage,
coordinate=Clutter.BindCoordinate.HEIGHT,
offset=-36))
scroll.set_scroll_mode(Clutter.ScrollMode.VERTICALLY)
scroll.set_easing_duration(250)
scroll.add_child(create_menu_actor())
stage.add_child(scroll)
def __init__(self, **kw):
kw.setdefault("layout-manager", Clutter.BinLayout())
super(PhotosImageWidget, self).__init__(**kw)
self._ratio = 1.0
self._base_image = Clutter.Texture()
self.add_child(self._base_image)
self._border_image = Clutter.Texture()
self.add_child(self._border_image)
self._crop_overlay = CropOverlay()
self.add_child(self._crop_overlay)
self._crop_overlay.hide_crop_overlay()
self.crop_overlay_visible = False
bind_overlay_size = Clutter.BindConstraint(
coordinate=Clutter.BindCoordinate.SIZE, source=self._base_image)
self._crop_overlay.add_constraint(bind_overlay_size)
self.connect('allocation-changed', self.alloc_changed)
def __init__(self):
super(Graticule, self).__init__()
self.__constraints = []
constraint = Clutter.AlignConstraint()
constraint.set_factor(0.5)
constraint.set_align_axis(Clutter.AlignAxis.X_AXIS)
self.__constraints += [constraint]
constraint = Clutter.AlignConstraint()
constraint.set_align_axis(Clutter.AlignAxis.Y_AXIS)
constraint.set_factor(0.5)
self.__constraints += [constraint]
constraint = Clutter.BindConstraint()
constraint.set_coordinate(Clutter.BindCoordinate.SIZE)
self.__constraints += [constraint]
for constraint in self.__constraints:
self.add_constraint(constraint)
self.connect('paint', self.paint)
return False
if __name__ == '__main__':
Clutter.init(None)
stage = Clutter.Stage(title='Actor Model', user_resizable=True)
stage.connect('destroy', Clutter.main_quit)
stage.connect('key-press-event', on_key_press_event)
stage.show()
scroll = Clutter.ScrollActor(name='scroll')
scroll.set_position(0, 18)
scroll.add_constraint(
Clutter.AlignConstraint(source=stage,
align_axis=Clutter.AlignAxis.X_AXIS,
factor=0.5))
scroll.add_constraint(
Clutter.BindConstraint(source=stage,
coordinate=Clutter.BindCoordinate.HEIGHT,
offset=-36))
scroll.set_scroll_mode(Clutter.ScrollMode.VERTICALLY)
scroll.set_easing_duration(250)
stage.add_child(scroll)
menu = Menu()
scroll.add_child(menu)
menu.populate()
Clutter.main()
# First actor, with a fixed (100, 25) size
layer_a = Clutter.Actor()
layer_a.props.background_color = Clutter.Color.get_static(Clutter.StaticColor.SCARLET_RED)
layer_a.set_size(100, 25)
stage.add_child(layer_a)
# The first actor is anchored to the center of the stage
layer_a.add_constraint(Clutter.AlignConstraint(source=stage, align_axis=Clutter.AlignAxis.BOTH, factor=0.5))
# Second actor, with no explicit size
layer_b = Clutter.Actor()
layer_b.props.background_color = Clutter.Color.get_static(Clutter.StaticColor.BUTTER_DARK)
stage.add_child(layer_b)
# The second actor tracks the X coordinate and the width of the first actor
layer_b.add_constraint(Clutter.BindConstraint(source=layer_a, coordinate=Clutter.BindCoordinate.X))
layer_b.add_constraint(Clutter.BindConstraint(source=layer_a, coordinate=Clutter.BindCoordinate.WIDTH))
# The second actor is snapped between the bottom edge of the first actor
# and the bottom edge of the stage; vertical spacing of 10px is added for
# padding
layer_b.add_constraint(Clutter.SnapConstraint(source=layer_a,
from_edge=Clutter.SnapEdge.TOP,
to_edge=Clutter.SnapEdge.BOTTOM,
offset=10))
layer_b.add_constraint(Clutter.SnapConstraint(source=stage,
from_edge=Clutter.SnapEdge.BOTTOM,
to_edge=Clutter.SnapEdge.BOTTOM,
offset=-10))
# The third actor, again with no explicit size
if resize_id == 0:
resize_id = GLib.timeout_add(500, idle_resize, actor)
if __name__ == '__main__':
Clutter.init(None)
# Our stage
stage = Clutter.Stage(title='2D Clock', user_resizable=True)
stage.props.background_color = Clutter.Color.get_static(Clutter.StaticColor.SKY_BLUE_LIGHT)
stage.set_size(300, 300)
stage.connect('destroy', Clutter.main_quit)
stage.show()
# The canvas, courtesy of Cairo
canvas = Clutter.Canvas(width=300, height=300)
canvas.connect('draw', draw_clock)
canvas.invalidate()
# The actor that displays the canvas
actor = Clutter.Actor(content=canvas)
actor.set_content_scaling_filters(Clutter.ScalingFilter.TRILINEAR,
Clutter.ScalingFilter.LINEAR)
actor.add_constraint(Clutter.BindConstraint(source=stage, coordinate=Clutter.BindCoordinate.SIZE))
actor.connect('allocation-changed', on_actor_resize)
stage.add_child(actor)
# Set up a timeout that invalidates the contents of the canvas every second
GLib.timeout_add(1000, invalidate_clock, canvas)
Clutter.main()
Cogl.set_source_color(cogl_color_from_clutter_color(color))
Cogl.path_round_rectangle(3, 3, w - 3, h - 3, 3, 10)
Cogl.path_fill()
# Initialize Clutter
Clutter.init(sys.argv)
# Disable font mipmapping (see <http://bugzilla.clutter-project.org/show_bug.cgi?id=2584>)
Clutter.set_font_flags(0)
# Set up stage.
stage = Clutter.Stage.get_default()
stage.set_size(576, 576)
stage.set_user_resizable(True)
stage.connect('destroy', lambda *args: Clutter.main_quit())
scope = ClutterScope()
stage.add_actor(scope)
scope.set_reactive(True)
constraint = Clutter.BindConstraint()
constraint.set_coordinate(Clutter.BindCoordinate.SIZE | Clutter.BindCoordinate.POSITION)
constraint.set_source(stage)
scope.add_constraint(constraint)
# Show everything.
stage.show_all()
# Start main loop.
Clutter.main()
def init_draggable_handles(self):
# Setup the four handles on the cropbox's corners. These are inset into the corners
# of the cropbox, and don't actually spill over onto the image stage; the illusion
# of their outward-facing corners overlapping the stage is made by offsetting the
# opaque squares slightly onto the cropbox
handles = []
coordinates = [TOP | LEFT, TOP | RIGHT, BOT | LEFT, BOT | RIGHT]
for coordinate in coordinates:
handle = DraggableHandle(self, coordinate)
# Each handle has four constraints:
# horiz_constraint: binds the handle to the cropbox's top/bottom sides
# vert_constraint: binds the handle to the cropbox's left/right sides
# width_constraint: binds the handle such that its width stays constant
# height_constraint: binds the handle such that its height stays constant
#
# The height/width constraints are set by binding the opposite side of the handle
# that horiz/vert constraints bind (respectively) to the same edge of the cropbox,
# and setting an offset equal to the desired height/width. The handle's hitbox is
# constrainted by position to the handle image
horiz_constraint = Clutter.SnapConstraint()
horiz_constraint.set_source(self)
vert_constraint = Clutter.SnapConstraint()
vert_constraint.set_source(self)
height_constraint = Clutter.SnapConstraint()
height_constraint.set_source(self)
width_constraint = Clutter.SnapConstraint()
width_constraint.set_source(self)
hitbox_pos_constraint = Clutter.BindConstraint()
hitbox_pos_constraint.set_source(handle.current_knob)
hitbox_pos_constraint.set_offset(4)
hitbox_pos_constraint.set_coordinate(
Clutter.BindCoordinate.POSITION)
offset = handle.get_offset()
if coordinate & TOP:
horiz_constraint.set_edges(CLUTTER_EDGES[TOP],
CLUTTER_EDGES[TOP])
height_constraint.set_edges(CLUTTER_EDGES[BOT],
CLUTTER_EDGES[TOP])
horiz_constraint.set_offset(BORDER_THICKNESS / 2 - offset)
height_constraint.set_offset(BORDER_THICKNESS / 2 - offset)
else:
horiz_constraint.set_edges(CLUTTER_EDGES[BOT],
CLUTTER_EDGES[BOT])
height_constraint.set_edges(CLUTTER_EDGES[TOP],
CLUTTER_EDGES[BOT])
horiz_constraint.set_offset(-(BORDER_THICKNESS / 2 + offset))
height_constraint.set_offset(-(BORDER_THICKNESS / 2 + offset))
if coordinate & LEFT:
vert_constraint.set_edges(CLUTTER_EDGES[LEFT],
CLUTTER_EDGES[LEFT])
width_constraint.set_edges(CLUTTER_EDGES[RIGHT],
CLUTTER_EDGES[LEFT])
vert_constraint.set_offset(BORDER_THICKNESS / 2 - offset)
width_constraint.set_offset(BORDER_THICKNESS / 2 - offset)
else:
vert_constraint.set_edges(CLUTTER_EDGES[RIGHT],
CLUTTER_EDGES[RIGHT])
width_constraint.set_edges(CLUTTER_EDGES[LEFT],
CLUTTER_EDGES[RIGHT])
vert_constraint.set_offset(-(BORDER_THICKNESS / 2 + offset))
width_constraint.set_offset(-(BORDER_THICKNESS / 2 + offset))
handle.add_constraint(height_constraint)
handle.add_constraint(width_constraint)
handle.add_constraint(horiz_constraint)
handle.add_constraint(vert_constraint)
handle.hitbox.add_constraint(hitbox_pos_constraint)
handles.append(handle)
return handles
def init_draggable_borders(self):
# Setup the borders which lay between the draggable handles
borders = []
coordinates = [TOP, BOT, LEFT, RIGHT]
for coordinate in coordinates:
border_wrapper = DraggableBorder(self, coordinate)
border = border_wrapper.line
border_hitbox = border_wrapper.hitbox
# Each border has four constraints:
# cropbox_edge_constraint: binds the border's x/y position to the respective edge
# of the cropbox
# thickness_constraint: binds the height/width of the border to the same edge, in
# order to maintain a constant thickness
# length_constraint (1 & 2): these two bind the two loose ends of the border to the
# cropbox's corners
# Its hitbox is constrained in the same fashion as its length_constraints, but also has
# a positional constraint to the border
cropbox_edge_constraint = Clutter.SnapConstraint()
cropbox_edge_constraint.set_source(self)
thickness_constraint = Clutter.SnapConstraint()
thickness_constraint.set_source(self)
wrapper_constraint_1 = Clutter.SnapConstraint()
wrapper_constraint_1.set_source(self)
wrapper_constraint_2 = Clutter.SnapConstraint()
wrapper_constraint_2.set_source(self)
wrapper_pos_constraint = Clutter.BindConstraint()
wrapper_pos_constraint.set_source(border)
length_constraint_1 = Clutter.SnapConstraint()
length_constraint_1.set_source(self)
length_constraint_2 = Clutter.SnapConstraint()
length_constraint_2.set_source(self)
if coordinate & TOP or coordinate & LEFT:
thickness_offset = border_wrapper.get_offset()
else:
thickness_offset = -border_wrapper.get_offset()
cropbox_edge_constraint.set_edges(CLUTTER_EDGES[coordinate],
CLUTTER_EDGES[coordinate])
thickness_constraint.set_edges(
CLUTTER_EDGES[self.opposing_side(coordinate)],
CLUTTER_EDGES[coordinate])
thickness_constraint.set_offset(thickness_offset)
wrapper_pos_constraint.set_coordinate(
Clutter.BindCoordinate.POSITION)
wrapper_pos_constraint.set_offset(-MARGIN / 2)
if coordinate & TOP or coordinate & BOT:
length_constraint_1.set_edges(CLUTTER_EDGES[LEFT],
CLUTTER_EDGES[LEFT])
length_constraint_2.set_edges(CLUTTER_EDGES[RIGHT],
CLUTTER_EDGES[RIGHT])
wrapper_constraint_1.set_edges(CLUTTER_EDGES[LEFT],
CLUTTER_EDGES[LEFT])
wrapper_constraint_2.set_edges(CLUTTER_EDGES[RIGHT],
CLUTTER_EDGES[RIGHT])
border_hitbox.set_height(MARGIN)
else:
length_constraint_1.set_edges(CLUTTER_EDGES[TOP],
CLUTTER_EDGES[TOP])
length_constraint_2.set_edges(CLUTTER_EDGES[BOT],
CLUTTER_EDGES[BOT])
wrapper_constraint_1.set_edges(CLUTTER_EDGES[TOP],
CLUTTER_EDGES[TOP])
wrapper_constraint_2.set_edges(CLUTTER_EDGES[BOT],
CLUTTER_EDGES[BOT])
border_hitbox.set_width(MARGIN)
border.add_constraint(cropbox_edge_constraint)
border.add_constraint(thickness_constraint)
border.add_constraint(length_constraint_1)
border.add_constraint(length_constraint_2)
border_hitbox.add_constraint(wrapper_constraint_1)
border_hitbox.add_constraint(wrapper_constraint_2)
border_hitbox.add_constraint(wrapper_pos_constraint)
borders.append(border_wrapper)
return borders
