def on_button_release(self,event): """ This handles and 'drag' part of any connection, after the on_button_press of this tool returns a True (i.e by clicking on an Line Handle) the on_button_release is triggered on mouse button release. Note that this handles both the new connections and modified connections. Hint: ConnectorTool is a child of this class. Uncommenting all the print statements should give a fair idea how this tool works. """ line = self.grabbed_item handle = self.grabbed_handle glueitem,glueport,gluepos = self.view.get_port_at_point((event.x,event.y),distance = 10,exclude = [line]) line = self.grabbed_item handle = self.grabbed_handle try: if glueport and hasattr(glueport,"point"): #print 'READY_CONNECTION_CHECK_PASSED_1' conn = Connector(line,handle) sink = ConnectionSink(glueitem,glueport) conn.connect_port(sink) self.ungrab_handle() #print 'READY_CONNECTION_CHECK_PASSED_2' except Exception as e: print 'Connection Failed, Disconnect/Connect the last Connection again: /n',e finally: self.toggle_highlight_ports() return super(BlockConnectTool, self).on_button_release(event)
def test_connect(self):
sink = ConnectionSink(self.comment, self.comment.ports()[0])
aspect = Connector(self.commentline, self.commentline.handles()[0])
aspect.connect(sink)
canvas = self.diagram.canvas
cinfo = canvas.get_connection(self.commentline.handles()[0])
assert cinfo, cinfo
def connect(self, item, handle, vpos):
"""
Connect a handle of a item to connectable item.
Connectable item is found by `ConnectHandleTool.glue` method.
:Parameters:
item
Connecting item.
handle
Handle of connecting item.
vpos
Position to connect to (or near at least)
"""
connector = Connector(item, handle)
# find connectable item and its port
sink = self.glue(item, handle, vpos)
# no new connectable item, then diconnect and exit
if sink:
connector.connect(sink)
else:
cinfo = item.canvas.get_connection(handle)
if cinfo:
connector.disconnect()
def on_button_release(self, event):
"""
This handles and 'drag' part of any connection, after the
on_button_press of this tool returns a True (i.e by clicking on an
Line Handle) the on_button_release is triggered on mouse button release.
Note that this handles both the new connections and modified
connections.
Hint:
ConnectorTool is a child of this class.
Uncommenting all the print statements should give a fair idea how this
tool works.
"""
line = self.grabbed_item
handle = self.grabbed_handle
glueitem, glueport, gluepos = self.view.get_port_at_point(
(event.x, event.y), distance=10, exclude=[line])
line = self.grabbed_item
handle = self.grabbed_handle
try:
if glueport and hasattr(glueport, "point"):
#print 'READY_CONNECTION_CHECK_PASSED_1'
conn = Connector(line, handle)
sink = ConnectionSink(glueitem, glueport)
conn.connect_port(sink)
self.ungrab_handle()
#print 'READY_CONNECTION_CHECK_PASSED_2'
except Exception as e:
print 'Connection Failed, Disconnect/Connect the last Connection again: /n', e
finally:
self.toggle_highlight_ports()
return super(BlockConnectTool, self).on_button_release(event)
def test_connect(self):
sink = ConnectionSink(self.comment, self.comment.ports()[0])
aspect = Connector(self.commentline, self.commentline.handles()[0])
aspect.connect(sink)
canvas = self.diagram.canvas
cinfo = canvas.get_connection(self.commentline.handles()[0])
assert cinfo, cinfo
def test_allow(self):
aspect = Connector(self.commentline, self.commentline.handles()[0])
assert aspect.item is self.commentline
assert aspect.handle is self.commentline.handles()[0]
sink = ConnectionSink(self.comment, self.comment.ports()[0])
assert aspect.allow(sink)
def test_allow(commentline, comment):
aspect = Connector(commentline, commentline.handles()[0])
assert aspect.item is commentline
assert aspect.handle is commentline.handles()[0]
sink = ConnectionSink(comment, comment.ports()[0])
assert aspect.allow(sink)
def test_allow(self):
aspect = Connector(self.commentline, self.commentline.handles()[0])
assert aspect.item is self.commentline
assert aspect.handle is self.commentline.handles()[0]
sink = ConnectionSink(self.comment, self.comment.ports()[0])
assert aspect.allow(sink)
def test_connect(diagram, comment, commentline):
sink = ConnectionSink(comment, comment.ports()[0])
aspect = Connector(commentline, commentline.handles()[0])
aspect.connect(sink)
canvas = diagram.canvas
cinfo = canvas.get_connection(commentline.handles()[0])
assert cinfo, cinfo
def _connectItems(self, items, connectorItem):
LOG.debug('connect %s', items)
handles = connectorItem.handles()[-1], connectorItem.handles()[0] # tail --> head
for i in range(2):
connector = Connector(connectorItem, handles[i])
sink = ConnectionSink(items[i], items[i].port)
connector.connect(sink)
def postload_connect(item: gaphas.Item, handle: gaphas.Handle,
target: gaphas.Item):
"""
Helper function: when loading a model, handles should be connected as
part of the `postload` step. This function finds a suitable spot on the
`target` item to connect the handle to.
"""
connector = ConnectorAspect(item, handle)
sink = _get_sink(item, handle, target)
connector.connect(sink)
def _postload_connect(self, handle, item):
"""
Postload connect method.
"""
from gaphas.aspect import Connector
connector = Connector(self, handle)
sink = self._get_sink(handle, item)
connector.connect(sink)
def testUndoOnDeletedElement(self):
b1 = Box()
b2 = Box()
line = Line()
canvas = Canvas()
canvas.add(b1)
self.assertEqual(2, len(canvas.solver.constraints))
canvas.add(b2)
self.assertEqual(4, len(canvas.solver.constraints))
canvas.add(line)
sink = ConnectionSink(b1, b1.ports()[0])
connector = Connector(line, line.handles()[0])
connector.connect(sink)
sink = ConnectionSink(b2, b2.ports()[0])
connector = Connector(line, line.handles()[-1])
connector.connect(sink)
self.assertEqual(6, len(canvas.solver.constraints))
self.assertEqual(2, len(list(canvas.get_connections(item=line))))
del undo_list[:]
# Here disconnect is not invoked!
canvas.remove(b2)
self.assertEqual(3, len(canvas.solver.constraints))
self.assertEqual(1, len(list(canvas.get_connections(item=line))))
cinfo = canvas.get_connection(line.handles()[0])
self.assertEqual(b1, cinfo.connected)
cinfo = canvas.get_connection(line.handles()[-1])
self.assertEqual(None, cinfo)
self.assertEqual([],
list(
canvas.solver.constraints_with_variable(
line.handles()[-1].pos.x)))
self.assertEqual([],
list(
canvas.solver.constraints_with_variable(
line.handles()[-1].pos.y)))
undo()
self.assertEqual(6, len(canvas.solver.constraints))
self.assertEqual(2, len(list(canvas.get_connections(item=line))))
cinfo = canvas.get_connection(line.handles()[0])
self.assertEqual(b1, cinfo.connected)
cinfo = canvas.get_connection(line.handles()[-1])
self.assertEqual(b2, cinfo.connected)
def connect(self, line, handle, item, port=None):
"""
Connect line's handle to an item.
If port is not provided, then first port is used.
"""
canvas = line.canvas
if port is None and len(item.ports()) > 0:
port = item.ports()[0]
sink = ConnectionSink(item, port)
connector = Connector(line, handle)
connector.connect(sink)
def connect(self, line, handle, item, port=None):
"""
Connect line's handle to an item.
If port is not provided, then first port is used.
"""
canvas = line.canvas
if port is None and len(item.ports()) > 0:
port = item.ports()[0]
sink = ConnectionSink(item, port)
connector = Connector(line, handle)
connector.connect(sink)
def on_button_press(self,event): glueitem,glueport,gluepos = self.view.get_port_at_point((event.x,event.y),distance = 10,exclude = []) line,handle = self.view.get_handle_at_point((event.x,event.y)) try: if glueport and hasattr(glueport,"point"): self.toggle_highlight_ports(glueport.portinstance) self.line = self._create_line((event.x, event.y)) self._new_item = self.line h_glue = self.line.handles()[self._handle_index_glued] conn = Connector(self.line,h_glue) sink = ConnectionSink(glueitem,glueport) conn.connect_port(sink) h_drag = self.line.handles()[self._handle_index_dragged] self.grab_handle(self.line,h_drag) return True except Exception as e: print 'Connection Failed, Disconnect/Connect the last Connection again: /n',e
def connect(line, handle, item, port=None):
"""Connect line's handle to an item.
If port is not provided, then first port is used.
"""
canvas = line.canvas
assert canvas is item.canvas
if port is None and len(item.ports()) > 0:
port = item.ports()[0]
sink = ConnectionSink(item, port)
connector = Connector(line, handle)
connector.connect(sink)
cinfo = canvas.get_connection(handle)
assert cinfo.connected is item
assert cinfo.port is port
def test_undo_on_delete_element(revert_undo, undo_fixture):
b1 = Box()
b2 = Box()
line = Line()
canvas = Canvas()
canvas.add(b1)
assert 2 == len(canvas.solver.constraints)
canvas.add(b2)
assert 4 == len(canvas.solver.constraints)
canvas.add(line)
sink = ConnectionSink(b1, b1.ports()[0])
connector = Connector(line, line.handles()[0])
connector.connect(sink)
sink = ConnectionSink(b2, b2.ports()[0])
connector = Connector(line, line.handles()[-1])
connector.connect(sink)
assert 6 == len(canvas.solver.constraints)
assert 2 == len(list(canvas.get_connections(item=line)))
del undo_fixture[2][:] # Clear undo_list
# Here disconnect is not invoked!
canvas.remove(b2)
assert 3 == len(canvas.solver.constraints)
assert 1 == len(list(canvas.get_connections(item=line)))
cinfo = canvas.get_connection(line.handles()[0])
assert b1 == cinfo.connected
cinfo = canvas.get_connection(line.handles()[-1])
assert cinfo is None
assert [] == list(
canvas.solver.constraints_with_variable(line.handles()[-1].pos.x))
assert [] == list(
canvas.solver.constraints_with_variable(line.handles()[-1].pos.y))
undo_fixture[0]() # Call undo
assert 6 == len(canvas.solver.constraints)
assert 2 == len(list(canvas.get_connections(item=line)))
cinfo = canvas.get_connection(line.handles()[0])
assert b1 == cinfo.connected
cinfo = canvas.get_connection(line.handles()[-1])
assert b2 == cinfo.connected
def on_button_press(self, event):
glueitem, glueport, gluepos = self.view.get_port_at_point(
(event.x, event.y), distance=10, exclude=[])
line, handle = self.view.get_handle_at_point((event.x, event.y))
try:
if glueport and hasattr(glueport, "point"):
self.toggle_highlight_ports(glueport.portinstance)
self.line = self._create_line((event.x, event.y))
self._new_item = self.line
h_glue = self.line.handles()[self._handle_index_glued]
conn = Connector(self.line, h_glue)
sink = ConnectionSink(glueitem, glueport)
conn.connect_port(sink)
h_drag = self.line.handles()[self._handle_index_dragged]
self.grab_handle(self.line, h_drag)
return True
except Exception as e:
print 'Connection Failed, Disconnect/Connect the last Connection again: /n', e
def connect(self, line, handle, item, port=None):
"""
Connect line's handle to an item.
If port is not provided, then first port is used.
"""
canvas = line.canvas
assert line.canvas is item.canvas
if port is None and len(item.ports()) > 0:
port = item.ports()[0]
sink = ConnectionSink(item, port)
connector = Connector(line, handle)
connector.connect(sink)
cinfo = canvas.get_connection(handle)
self.assertSame(cinfo.connected, item)
self.assertSame(cinfo.port, port)
def test_iconnect(self):
"""
Test basic glue functionality using CommentItem and CommentLine
items.
"""
element_factory = Application.get_service('element_factory')
diagram = element_factory.create(UML.Diagram)
comment = diagram.create(CommentItem,
subject=element_factory.create(UML.Comment))
#assert comment.height == 50
#assert comment.width == 100
actor = diagram.create(ActorItem,
subject=element_factory.create(UML.Actor))
actor.matrix.translate(200, 200)
diagram.canvas.update_matrix(actor)
line = diagram.create(CommentLineItem)
view = self.get_diagram_view(diagram)
assert view, 'View should be available here'
tool = ConnectHandleTool(view)
# select handle:
handle = line.handles()[-1]
tool._grabbed_item = line
tool._grabbed_handle = handle
# Should glue to (238, 248)
handle.pos = 245, 248
item = tool.glue(line, handle, (245, 248))
self.assertTrue(item is not None)
self.assertEquals((238, 248),
view.canvas.get_matrix_i2c(line).transform_point(
handle.x, handle.y))
handle.pos = 245, 248
tool.connect(line, handle, (245, 248))
cinfo = diagram.canvas.get_connection(handle)
self.assertTrue(cinfo.constraint is not None)
self.assertTrue(cinfo.connected is actor, cinfo.connected)
self.assertEquals(
(238, 248),
view.get_matrix_i2v(line).transform_point(handle.x, handle.y))
Connector(line, handle).disconnect()
#tool.disconnect(line, handle)
cinfo = diagram.canvas.get_connection(handle)
self.assertTrue(cinfo is None)
def glue(self, pos, distance=None):
"""
Glue to an item near a specific point.
Returns a ConnectionSink or None.
"""
item = self.item
handle = self.handle
view = self.view
if distance is None:
distance = self.GLUE_DISTANCE
if not handle.connectable:
return None
state_v, port, glue_pos = view.get_port_at_point(
pos,
distance=distance,
exclude=(item, ),
exclude_port_fun=self._exclude_port)
# check if item and found item can be connected on closest port
if port is not None:
assert state_v is not None
connector = Connector(self.item, self.handle)
sink = ConnectionSink(state_v, port)
if connector.allow(sink):
# transform coordinates from view space to the item space and
# update position of item's handle
v2i = view.get_matrix_v2i(item).transform_point
handle.pos = v2i(*glue_pos)
return sink
state_l = view.get_state_at_point(pos, distance=distance)
state_v = state_l
if state_v is not None and not state_v.model.state.is_root_state:
return ConnectionSink(state_v, None)
return None
def connect(self, item, handle, vpos):
"""
Connect a handle of a item to connectable item.
Connectable item is found by `ConnectHandleTool.glue` method.
:Parameters:
item
Connecting item.
handle
Handle of connecting item.
vpos
Position to connect to (or near at least)
"""
connector = Connector(item, handle)
# find connectable item and its port
sink = self.glue(item, handle, vpos)
# no new connectable item, then diconnect and exit
if sink:
connector.connect(sink)
else:
cinfo = item.canvas.get_connection(handle)
if cinfo:
connector.disconnect()
def testUndoOnDeletedElement(self):
b1 = Box()
b2 = Box()
line = Line()
canvas = Canvas()
canvas.add(b1)
self.assertEquals(6, len(canvas.solver.constraints))
canvas.add(b2)
self.assertEquals(12, len(canvas.solver.constraints))
canvas.add(line)
sink = ConnectionSink(b1, b1.ports()[0])
connector = Connector(line, line.handles()[0])
connector.connect(sink)
sink = ConnectionSink(b2, b2.ports()[0])
connector = Connector(line, line.handles()[-1])
connector.connect(sink)
self.assertEquals(14, len(canvas.solver.constraints))
self.assertEquals(2, len(list(canvas.get_connections(item=line))))
del undo_list[:]
# Here disconnect is not invoked!
canvas.remove(b2)
self.assertEquals(7, len(canvas.solver.constraints))
self.assertEquals(1, len(list(canvas.get_connections(item=line))))
cinfo = canvas.get_connection(line.handles()[0])
self.assertEquals(b1, cinfo.connected)
cinfo = canvas.get_connection(line.handles()[-1])
self.assertEquals(None, cinfo)
self.assertEquals([], list(canvas.solver.constraints_with_variable(line.handles()[-1].pos.x)))
self.assertEquals([], list(canvas.solver.constraints_with_variable(line.handles()[-1].pos.y)))
undo()
self.assertEquals(14, len(canvas.solver.constraints))
self.assertEquals(2, len(list(canvas.get_connections(item=line))))
cinfo = canvas.get_connection(line.handles()[0])
self.assertEquals(b1, cinfo.connected)
cinfo = canvas.get_connection(line.handles()[-1])
self.assertEquals(b2, cinfo.connected)
def test_undo_on_delete_element(revert_undo, undo_fixture):
b1 = Box()
b2 = Box()
line = Line()
canvas = Canvas()
canvas.add(b1)
assert 2 == len(canvas.solver.constraints)
canvas.add(b2)
assert 4 == len(canvas.solver.constraints)
canvas.add(line)
sink = ConnectionSink(b1, b1.ports()[0])
connector = Connector(line, line.handles()[0])
connector.connect(sink)
sink = ConnectionSink(b2, b2.ports()[0])
connector = Connector(line, line.handles()[-1])
connector.connect(sink)
assert 6 == len(canvas.solver.constraints)
assert 2 == len(list(canvas.get_connections(item=line)))
del undo_fixture[2][:] # Clear undo_list
# Here disconnect is not invoked!
canvas.remove(b2)
assert 3 == len(canvas.solver.constraints)
assert 1 == len(list(canvas.get_connections(item=line)))
cinfo = canvas.get_connection(line.handles()[0])
assert b1 == cinfo.connected
cinfo = canvas.get_connection(line.handles()[-1])
assert cinfo is None
assert [] == list(canvas.solver.constraints_with_variable(line.handles()[-1].pos.x))
assert [] == list(canvas.solver.constraints_with_variable(line.handles()[-1].pos.y))
undo_fixture[0]() # Call undo
assert 6 == len(canvas.solver.constraints)
assert 2 == len(list(canvas.get_connections(item=line)))
cinfo = canvas.get_connection(line.handles()[0])
assert b1 == cinfo.connected
cinfo = canvas.get_connection(line.handles()[-1])
assert b2 == cinfo.connected
def test_remove_connected_item():
"""Test adding canvas constraint.
"""
canvas = Canvas()
from gaphas.aspect import Connector, ConnectionSink
l1 = Line()
canvas.add(l1)
b1 = Box()
canvas.add(b1)
number_cons1 = len(canvas.solver.constraints)
b2 = Box()
canvas.add(b2)
number_cons2 = len(canvas.solver.constraints)
conn = Connector(l1, l1.handles()[0])
sink = ConnectionSink(b1, b1.ports()[0])
conn.connect(sink)
assert canvas.get_connection(l1.handles()[0])
conn = Connector(l1, l1.handles()[1])
sink = ConnectionSink(b2, b2.ports()[0])
conn.connect(sink)
assert canvas.get_connection(l1.handles()[1])
assert number_cons2 + 2 == len(canvas.solver.constraints)
canvas.remove(b1)
# Expecting a class + line connected at one end only
assert number_cons1 + 1 == len(canvas.solver.constraints)
def test_iconnect(self):
"""
Test basic glue functionality using CommentItem and CommentLine
items.
"""
element_factory = Application.get_service("element_factory")
diagram = element_factory.create(UML.Diagram)
self.event_manager.handle(DiagramShow(diagram))
comment = diagram.create(CommentItem,
subject=element_factory.create(UML.Comment))
actor = diagram.create(ActorItem,
subject=element_factory.create(UML.Actor))
actor.matrix.translate(200, 200)
diagram.canvas.update_matrix(actor)
line = diagram.create(CommentLineItem)
view = self.get_diagram_view(diagram)
assert view, "View should be available here"
comment_bb = view.get_item_bounding_box(comment)
# select handle:
handle = line.handles()[-1]
tool = ConnectHandleTool(view=view)
tool.grab_handle(line, handle)
handle.pos = (comment_bb.x, comment_bb.y)
item = tool.glue(line, handle, handle.pos)
assert item is not None
tool.connect(line, handle, handle.pos)
cinfo = diagram.canvas.get_connection(handle)
assert cinfo.constraint is not None
assert cinfo.connected is actor, cinfo.connected
Connector(line, handle).disconnect()
cinfo = diagram.canvas.get_connection(handle)
assert cinfo is None
def test_remove_connected_item(self):
"""Test adding canvas constraint"""
canvas = Canvas()
from gaphas.aspect import Connector, ConnectionSink
l1 = Line()
canvas.add(l1)
b1 = Box()
canvas.add(b1)
number_cons1 = len(canvas.solver.constraints)
b2 = Box()
canvas.add(b2)
number_cons2 = len(canvas.solver.constraints)
conn = Connector(l1, l1.handles()[0])
sink = ConnectionSink(b1, b1.ports()[0])
conn.connect(sink)
assert canvas.get_connection(l1.handles()[0])
conn = Connector(l1, l1.handles()[1])
sink = ConnectionSink(b2, b2.ports()[0])
conn.connect(sink)
assert canvas.get_connection(l1.handles()[1])
self.assertEquals(number_cons2 + 2, len(canvas.solver.constraints))
canvas.remove(b1)
# Expecting a class + line connected at one end only
self.assertEquals(number_cons1 + 1, len(canvas.solver.constraints))
def test_aspect_type(self):
aspect = Connector(self.commentline, self.commentline.handles()[0])
assert type(aspect) is DiagramItemConnector
def test_aspect_type(commentline):
aspect = Connector(commentline, commentline.handles()[0])
assert isinstance(aspect, DiagramItemConnector)
