def __show_connection(self, ruler, diagram, connection, data):
visual = diagram.show(connection)
for point in data['points']:
visual.add_point(ruler, None, Point(point['x'], point['y']))
for label in visual.get_labels():
point = data['labels'][label.id]
label.move(ruler, Point(point['x'], point['y']))
return visual
def add_to_path(self, context, builder):
x1 = self.__x1(context)
y1 = self.__y1(context)
x2 = self.__x2(context)
y2 = self.__y2(context)
x = self.__x(context)
y = self.__y(context)
builder.cubic_to(Point(x1, y1), Point(x2, y2), Point(x, y))
def __load_connection_visual(self, diagram, node):
connection = self.__connection_map[UUID(node.attrib["id"])]
visual = diagram.show(connection)
for child in node:
if child.tag == "{{{0}}}Point".format(MODEL_NAMESPACE):
position = Point(int(child.attrib["x"]), int(child.attrib["y"]))
visual.add_point(self.__ruler, None, position)
elif child.tag == "{{{0}}}Label".format(MODEL_NAMESPACE):
label = visual.get_label(child.attrib["id"])
position = Point(int(child.attrib["x"]), int(child.attrib["y"]))
label.move(self.__ruler, position)
else:
raise Exception
def contextMenuEvent(self, event):
if event.reason() == QContextMenuEvent.Mouse:
pos = event.pos()
point = Point(pos.x(), pos.y())
self.__drawing_area.ensure_selection_at(point)
self.__drawing_area.reset_action()
self.__do_update()
if self.__drawing_area.selection.is_element_selected:
menu = CanvasElementMenu(
self.__main_window, self.__drawing_area,
self.__drawing_area.selection.selected_elements)
elif self.__drawing_area.selection.is_connection_selected:
menu = CanvasConnectionMenu(
self.__main_window, self.__drawing_area,
self.__drawing_area.selection.selected_connection)
elif self.__drawing_area.selection.is_diagram_selected:
menu = CanvasDiagramMenu(
self.__main_window, self.__drawing_area,
self.__drawing_area.selection.selected_diagram)
else:
raise Exception
menu_pos = event.globalPos()
menu.exec_(menu_pos)
def __create_appearance_object(self, ruler):
self.__cached_appearance = self.__connection(
).object.create_label_object(self.__id, ruler)
first_point = self.__connection().get_point(ruler, self.__line_index)
second_point = self.__connection().get_point(ruler,
self.__line_index + 1)
line_vector = second_point - first_point
vector_to_label = Vector.from_angle_length(
line_vector.angle + self.__angle, self.__distance)
position = first_point\
+ line_vector * self.__line_position\
+ vector_to_label\
- self.__cached_appearance.size.as_vector() / 2
x, y = round(position.x), round(position.y)
if x < 0:
x = 0
if y < 0:
y = 0
self.__cached_appearance.move(Point(x, y))
def mouseDoubleClickEvent(self, event):
pos = event.pos()
point = Point(pos.x(), pos.y())
self.__drawing_area.ensure_selection_at(point)
visual = self.__drawing_area.selection.get_lonely_selected_visual()
if visual is None:
return
if not visual.object.has_ufl_dialog:
return
self.__drawing_area.set_action(None)
self.unsetCursor()
if not isinstance(visual, ElementVisual):
PropertiesDialog.open_for(self.__main_window, visual.object)
elif visual.object.type.default_action == DefaultElementAction.properties:
PropertiesDialog.open_for(self.__main_window, visual.object)
elif visual.object.type.default_action == DefaultElementAction.subdiagram:
for diagram in visual.object.diagrams:
if diagram is not self.__drawing_area.diagram:
Application().tabs.select_tab(diagram)
break
else:
PropertiesDialog.open_for(self.__main_window, visual.object)
def __load_element_visual(self, diagram, node):
position = Point(int(node.attrib["x"]), int(node.attrib["y"]))
size = Size(int(node.attrib["width"]), int(node.attrib["height"]))
element = self.__element_map[UUID(node.attrib["id"])]
visual = diagram.show(element)
visual.move(self.__ruler, position)
visual.resize(self.__ruler, size)
def load(self):
definitions = {
"ArrowDefinition": {},
"CornerDefinition": {},
"SideDefinition": {},
}
for child in self.__xmlroot:
if child.tag == "{{{0}}}ArrowDefinition".format(ADDON_NAMESPACE):
definition = ArrowDefinition(
child.attrib["id"],
PathBuilder().from_string(child.attrib["path"]).build(),
Point.parse(child.attrib["center"]),
self.__parse_rotation(child.attrib["rotation"])
)
definitions["ArrowDefinition"][definition.id] = definition
elif child.tag == "{{{0}}}CornerDefinition".format(ADDON_NAMESPACE):
ornament = None
if "ornament" in child.attrib:
ornament = PathBuilder().from_string(child.attrib["ornament"]).build()
definition = CornerDefinition(
child.attrib["id"],
PathBuilder().from_string(child.attrib["path"]).build(),
ornament,
Point.parse(child.attrib["center"]),
child.attrib["corner"]
)
definitions["CornerDefinition"][definition.id] = definition
elif child.tag == "{{{0}}}SideDefinition".format(ADDON_NAMESPACE):
ornament = None
if "ornament" in child.attrib:
ornament = PathBuilder().from_string(child.attrib["ornament"]).build()
definition = SideDefinition(
child.attrib["id"],
PathBuilder().from_string(child.attrib["path"]).build(),
ornament,
Point.parse(child.attrib["center"]),
Size(int(child.attrib["width"]), int(child.attrib["height"])),
child.attrib["side"]
)
definitions["SideDefinition"][definition.id] = definition
return definitions
def dropEvent(self, event):
mime_data = event.mimeData()
if isinstance(mime_data, ProjectMimeData) and isinstance(
mime_data.model_object, ElementObject):
pos = event.pos()
point = Point(pos.x(), pos.y())
element = mime_data.model_object
command = ShowElementCommand(self.diagram, element, point)
Application().commands.execute(command)
def __execute_menu_action(self, menu_item):
self.__menu_selected = True
global_pos = QCursor.pos()
pos = self.mapFromGlobal(global_pos)
point = Point(pos.x(), pos.y())
self.__drawing_area.execute_menu_action(
menu_item, point,
QApplication.keyboardModifiers() == Qt.ControlModifier,
QApplication.keyboardModifiers() == Qt.ShiftModifier)
def __init__(self, diagram, object):
self.__cache = ModelTemporaryDataCache(self.__create_appearance_object)
self.__cache.depend_on(object.cache)
self.__diagram = ref(diagram)
self.__object = object
self.__cached_appearance = None
self.__position = Point(0, 0)
self.__size = None
self.__connections = WeakSet()
def mouseMoveEvent(self, event):
pos = event.pos()
point = Point(pos.x(), pos.y())
self.__drawing_area.mouse_move(
point,
QApplication.keyboardModifiers() == Qt.ControlModifier,
QApplication.keyboardModifiers() == Qt.ShiftModifier)
if self.__drawing_area.action_active:
self.__do_update()
else:
self.__update_cursor()
def snap_point(self, point):
best_horizontal = None
best_horizontal_distance = self.MAXIMAL_DISTANCE
best_vertical = None
best_vertical_distance = self.MAXIMAL_DISTANCE
for guideline in self.__center_guidelines:
horizontal_distance = abs(guideline.x - point.x)
vertical_distance = abs(guideline.y - point.y)
if horizontal_distance < best_horizontal_distance:
best_horizontal_distance = horizontal_distance
best_horizontal = guideline
if vertical_distance < best_vertical_distance:
best_vertical_distance = vertical_distance
best_vertical = guideline
horizontal_indicators = set()
vertical_indicators = set()
if best_horizontal is not None and best_vertical is not None:
point = Point(best_horizontal.x, best_vertical.y)
elif best_horizontal is not None:
point = Point(best_horizontal.x, point.y)
elif best_vertical is not None:
point = Point(point.x, best_vertical.y)
if best_horizontal is not None:
for guideline in self.__center_guidelines:
if best_horizontal.x == guideline.x:
horizontal_indicators.add(guideline)
horizontal_indicators.add(point)
if best_vertical is not None:
for guideline in self.__center_guidelines:
if best_vertical.y == guideline.y:
vertical_indicators.add(guideline)
vertical_indicators.add(point)
return SnappedPoint(point, horizontal_indicators, vertical_indicators)
def mouseReleaseEvent(self, event):
pos = event.pos()
point = Point(pos.x(), pos.y())
if self.__mouse_down:
self.__drawing_area.mouse_up(
point,
QApplication.keyboardModifiers() == Qt.ControlModifier,
QApplication.keyboardModifiers() == Qt.ShiftModifier)
self.__mouse_down = False
self.__do_update()
else:
super().mousePressEvent(event)
def mouse_move(self, point):
x, y = point.x, point.y
if x < 0:
x = 0
if y < 0:
y = 0
point = Point(x, y)
if self.__snapping is not None:
self.__snapped = self.__snapping.snap_point(point)
point = self.__snapped.point
else:
self.__snapped = None
self.__points[self.__index] = point
self.__build_path()
def mouse_move(self, point):
if self.__source_element is not None:
x, y = point.x, point.y
if x < 0:
x = 0
if y < 0:
y = 0
point = Point(x, y)
if self.__snapping is not None:
self.__snapped = self.__snapping.snap_point(point)
point = self.__snapped.point
else:
self.__snapped = None
self.__last_point = point
self.__build_path()
def __snap_point_horizontally(self, point):
best = None
best_distance = self.MAXIMAL_DISTANCE
for guideline in self.__horizontal_guidelines:
horizontal_distance = abs(guideline.x - point.x)
if horizontal_distance < best_distance:
best_distance = horizontal_distance
best = guideline
indicators = set()
if best is not None:
point = Point(best.x, point.y)
for guideline in self.__horizontal_guidelines:
if best.x == guideline.x:
indicators.add(guideline)
indicators.add(point)
return SnappedPoint(point, horizontal_indicators=indicators)
return SnappedPoint(point)
def __snap_point_vertically(self, point):
best_vertical = None
best_vertical_distance = self.MAXIMAL_DISTANCE
for guideline in self.__vertical_guidelines:
vertical_distance = abs(guideline.y - point.y)
if vertical_distance < best_vertical_distance:
best_vertical_distance = vertical_distance
best_vertical = guideline
vertical_indicators = set()
if best_vertical is not None:
point = Point(point.x, best_vertical.y)
for guideline in self.__vertical_guidelines:
if best_vertical.y == guideline.y:
vertical_indicators.add(guideline)
vertical_indicators.add(point)
return SnappedPoint(point, vertical_indicators=vertical_indicators)
return SnappedPoint(point)
class Selection:
SELECTION_COLOR = Colors.blue
SELECTION_SIZE = 2
SELECTION_POINT_COLOR = Colors.darkgray
SELECTION_POINT_SIZE = 8
LABEL_LINE_MINIMAL_DISTANCE = 10
ICON_COLOR = Colors.darkgray
ICON_COLOR_BACKGROUND = Colors.white.add_alpha(200)
CONNECTION_ICON_SHIFT = Vector(8, 0)
CONNECTION_ICON = PathBuilder()\
.move_to(Point(0, 5))\
.line_to(Point(11, 5))\
.move_to(Point(6, 0))\
.line_to(Point(11, 5))\
.line_to((Point(6, 10)))\
.build()
CONNECTION_ICON_BOUNDS = Rectangle(0, 0, 11, 10) + CONNECTION_ICON_SHIFT
def __init__(self, application, diagram):
self.__selected = set()
self.__application = application
self.__diagram = diagram
application.event_dispatcher.subscribe(ElementHiddenEvent,
self.__something_removed)
application.event_dispatcher.subscribe(ConnectionHiddenEvent,
self.__something_removed)
def __something_removed(self, event):
new_selection = set()
for selected_item in self.__selected:
if self.__diagram.contains(selected_item):
new_selection.add(selected_item)
self.__selected = new_selection
@property
def selected_visuals(self):
yield from self.__selected
@property
def selected_elements(self):
for visual in self.__selected:
if isinstance(visual, ElementVisual):
yield visual
@property
def selected_connection(self):
for visual in self.__selected:
if isinstance(visual, ConnectionVisual):
return visual
return None
@property
def selected_diagram(self):
if self.__selected:
return None
else:
return self.__diagram
@property
def diagram(self):
return self.__diagram
def select(self, visual):
self.__selected.clear()
if visual is not None:
if isinstance(visual, Iterable):
self.__selected.update(visual)
else:
self.__selected.add(visual)
self.__application.event_dispatcher.dispatch(
SelectionChangedEvent(self.__diagram, self))
def select_all(self):
self.__selected.clear()
self.__selected.update(self.__diagram.elements)
self.__application.event_dispatcher.dispatch(
SelectionChangedEvent(self.__diagram, self))
def deselect_all(self):
self.__selected.clear()
self.__application.event_dispatcher.dispatch(
SelectionChangedEvent(self.__diagram, self))
def add_to_selection(self, visual):
if isinstance(visual, ConnectionVisual):
self.__selected.clear()
elif self.__selected and all(
isinstance(sel, ConnectionVisual) for sel in self.__selected):
self.__selected.clear()
self.__selected.add(visual)
self.__application.event_dispatcher.dispatch(
SelectionChangedEvent(self.__diagram, self))
def remove_from_selection(self, visual):
if visual in self.__selected:
self.__selected.remove(visual)
self.__application.event_dispatcher.dispatch(
SelectionChangedEvent(self.__diagram, self))
def toggle_select(self, visual):
if visual in self.__selected:
self.remove_from_selection(visual)
else:
self.add_to_selection(visual)
def select_at(self, point):
object = self.__diagram.get_visual_at(self.__application.ruler, point)
self.deselect_all()
if object is not None:
self.add_to_selection(object)
def select_in_area(self, area):
self.__selected.clear()
for element in self.__diagram.elements:
if element.get_bounds(
self.__application.ruler).is_overlapping(area):
self.__selected.add(element)
self.__application.event_dispatcher.dispatch(
SelectionChangedEvent(self.__diagram, self))
def draw_for(self, canvas, visual):
if visual not in self.__selected:
return
if isinstance(visual, ElementVisual):
bounds = visual.get_bounds(canvas.get_ruler())
if len(self.__selected) == 1:
for pos_x, pos_y in self.__get_selection_points_positions(
visual):
self.__draw_selection_point(canvas, bounds, pos_x, pos_y)
connection_icon_position = bounds.top_right + self.CONNECTION_ICON_SHIFT
connection_icon = self.CONNECTION_ICON.transform(
Transformation.make_translate(connection_icon_position))
canvas.draw_path(connection_icon,
fg=self.ICON_COLOR,
bg=self.ICON_COLOR_BACKGROUND,
line_width=2)
canvas.draw_rectangle(bounds,
fg=self.SELECTION_COLOR,
line_width=self.SELECTION_SIZE)
elif isinstance(visual, ConnectionVisual):
if len(self.__selected) == 1:
fg_color = None
bg_color = self.SELECTION_POINT_COLOR
else:
fg_color = self.SELECTION_POINT_COLOR
bg_color = None
for point in visual.get_points(canvas.get_ruler()):
canvas.draw_rectangle(Rectangle.from_point_size(
point - Vector(self.SELECTION_POINT_SIZE // 2,
self.SELECTION_POINT_SIZE // 2),
Size(self.SELECTION_POINT_SIZE,
self.SELECTION_POINT_SIZE)),
fg=fg_color,
bg=bg_color)
for label in visual.get_labels():
bounds = label.get_bounds(canvas.get_ruler())
if bounds.width and bounds.height:
canvas.draw_rectangle(bounds,
fg=self.SELECTION_COLOR,
line_width=self.SELECTION_SIZE)
line_to_connection = Line.from_point_point(
label.get_nearest_point(canvas.get_ruler()),
bounds.center)
intersect = list(bounds.intersect(line_to_connection))
if intersect and (
line_to_connection.first - intersect[0]
).length > self.LABEL_LINE_MINIMAL_DISTANCE:
canvas.draw_line(line_to_connection.first,
intersect[0],
fg=self.SELECTION_COLOR,
line_width=self.SELECTION_SIZE,
line_style=LineStyle.dot)
def draw_selected(self, canvas, selection=False, transparent=False):
if not transparent:
self.__diagram.draw_background(canvas)
if self.is_connection_selected:
self.selected_connection.draw(canvas)
if selection:
self.draw_for(canvas, self.selected_connection)
elif self.is_element_selected:
elements = [
element for element in self.__diagram.elements
if element in self.__selected
]
for element in elements:
element.draw(canvas)
if selection:
self.draw_for(canvas, element)
for connection in self.__diagram.connections:
if connection.source in self.__selected and connection.destination in self.__selected:
connection.draw(canvas)
if selection:
self.draw_for(canvas, connection)
else:
raise Exception
def __get_selection_points_positions(self, visual):
resizable_x, resizable_y = visual.is_resizable(
self.__application.ruler)
if resizable_x and resizable_y:
yield SelectionPointPosition.first, SelectionPointPosition.first
yield SelectionPointPosition.first, SelectionPointPosition.last
yield SelectionPointPosition.last, SelectionPointPosition.first
yield SelectionPointPosition.last, SelectionPointPosition.last
if resizable_x:
yield SelectionPointPosition.first, SelectionPointPosition.center
yield SelectionPointPosition.last, SelectionPointPosition.center
if resizable_y:
yield SelectionPointPosition.center, SelectionPointPosition.first
yield SelectionPointPosition.center, SelectionPointPosition.last
def __draw_selection_point(self, canvas, bounds, pos_x, pos_y):
canvas.draw_rectangle(self.__get_selection_point(bounds, pos_x, pos_y),
bg=self.SELECTION_POINT_COLOR)
def __get_selection_point(self, bounds, pos_x, pos_y):
x1, x2 = self.__compute_selection_point_position(
pos_x, bounds.x1, bounds.width)
y1, y2 = self.__compute_selection_point_position(
pos_y, bounds.y1, bounds.height)
return Rectangle(x1, y1, x2 - x1, y2 - y1)
def __compute_selection_point_position(self, pos, start, size):
if pos == SelectionPointPosition.first:
return start, start + self.SELECTION_POINT_SIZE
elif pos == SelectionPointPosition.center:
return start + size // 2 - self.SELECTION_POINT_SIZE // 2, start + size // 2 + self.SELECTION_POINT_SIZE // 2
elif pos == SelectionPointPosition.last:
return start + size - self.SELECTION_POINT_SIZE, start + size
def get_action_at(self, position, shift_pressed):
if len(self.__selected) == 1 and self.is_connection_selected:
connection, = self.__selected
action = self.__get_connection_action_at(connection, position,
shift_pressed)
if isinstance(action,
(MoveConnectionPointAction, AddConnectionPointAction,
RemoveConnectionPointAction)):
return action
visual = self.__diagram.get_visual_at(self.__application.ruler,
position)
if len(self.__selected) == 1 and self.is_element_selected:
element, = self.__selected
if visual is None or self.__diagram.get_z_order(
visual) < self.__diagram.get_z_order(element):
element_icon_action = self.__get_element_icon_action_at(
element, position, shift_pressed)
if element_icon_action is not None:
return element_icon_action
if visual not in self.__selected:
return None
if len(self.__selected) > 1:
if shift_pressed:
return None
else:
return MoveSelectionAction()
if isinstance(visual, ElementVisual):
return self.__get_element_action_at(visual, position,
shift_pressed)
elif isinstance(visual, ConnectionVisual):
return self.__get_connection_action_at(visual, position,
shift_pressed)
else:
return None
def __get_element_action_at(self, element, position, shift_pressed):
if shift_pressed:
return None
bounds = element.get_bounds(self.__application.ruler)
for pos_x, pos_y in self.__get_selection_points_positions(element):
if self.__get_selection_point(bounds, pos_x,
pos_y).contains(position):
return ResizeElementAction(element, pos_x, pos_y)
return MoveSelectionAction()
def __get_element_icon_action_at(self, element, position, shift_pressed):
if shift_pressed:
return None
bounds = element.get_bounds(self.__application.ruler)
connection_icon_bounds = self.CONNECTION_ICON_BOUNDS + bounds.top_right.as_vector(
)
if connection_icon_bounds.contains(position):
return AddUntypedConnectionAction(element)
return None
def __get_connection_action_at(self, connection, position, shift_pressed):
found = None
for idx, point in enumerate(
connection.get_points(self.__application.ruler)):
if idx > 0: # don't return it for first point
if (position - point
).length < ConnectionVisual.MAXIMAL_CLICKABLE_DISTANCE:
found = idx
elif found is not None: # don't return it for last point
if shift_pressed:
return RemoveConnectionPointAction(connection, found)
else:
return MoveConnectionPointAction(connection, found)
for label in connection.get_labels():
if label.get_bounds(self.__application.ruler).contains(position):
if shift_pressed:
return None
else:
return MoveConnectionLabelAction(connection, label.id)
if shift_pressed:
last = None
for idx, point in enumerate(
connection.get_points(self.__application.ruler)):
if last is not None:
distance = Line.from_point_point(
last, point).get_distance_to(position)
if distance < ConnectionVisual.MAXIMAL_CLICKABLE_DISTANCE:
return AddConnectionPointAction(connection, idx)
last = point
return None
def is_selection_at(self, position):
visual = self.__diagram.get_visual_at(self.__application.ruler,
position)
return visual in self.__selected
def is_selected(self, visual):
return visual in self.__selected
def get_bounds(self, include_connections=True):
bounds = [
visual.get_bounds(self.__application.ruler)
for visual in self.__selected
]
if include_connections and self.is_element_selected:
for connection in self.__diagram.connections:
if connection.source in self.__selected and connection.destination in self.__selected:
bounds.append(
connection.get_bounds(self.__application.ruler))
return Rectangle.combine_bounds(bounds)
@property
def is_diagram_selected(self):
return len(self.__selected) == 0
@property
def is_connection_selected(self):
return any(
isinstance(visual, ConnectionVisual) for visual in self.__selected)
@property
def is_element_selected(self):
return any(
isinstance(visual, ElementVisual) for visual in self.__selected)
@property
def size(self):
return len(self.__selected)
def get_lonely_selected_visual(self):
if len(self.__selected) != 1:
return None
for visual in self.__selected:
return visual
def _new_position(self, position, size):
return Point(position.x + size.width, position.y)
def __get_position(self, node):
return Point(int(node.attrib.get("x", 0)), int(node.attrib.get("y",
0)))
def __init__(self, object):
self.__object = object
self.__position = Point(0, 0)
self.__size = self.__object.get_minimal_size()
def add_to_path(self, context, builder):
x = self.__x(context)
y = self.__y(context)
builder.move_to(Point(x, y))
def __show_element(self, ruler, diagram, element, data):
visual = diagram.show(element)
visual.move(ruler, Point(data['x'], data['y']))
visual.resize(ruler, Size(data['width'], data['height']))
return visual
def __transform_position(self, position):
zoom = self.ZOOM_FACTOR**self.__zoom
return Point(int(round(position.x / zoom)), int(round(position.y / zoom)))
def _new_position(self, position, size):
return Point(position.x, position.y + size.height)