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| ###################################################################################################################### | ||
| # Copyright (C) 2017-2022 Spine project consortium | ||
| # Copyright Spine Toolbox contributors | ||
| # This file is part of Spine Toolbox. | ||
| # Spine Toolbox is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General | ||
| # Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) | ||
| # any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; | ||
| # without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General | ||
| # Public License for more details. You should have received a copy of the GNU Lesser General Public License along with | ||
| # this program. If not, see <http://www.gnu.org/licenses/>. | ||
| ###################################################################################################################### | ||
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| """Class for drawing an item group on QGraphicsScene.""" | ||
| from PySide6.QtCore import Qt, QMarginsF, QRectF | ||
| from PySide6.QtGui import QBrush, QPen, QAction, QPainterPath, QTransform | ||
| from PySide6.QtWidgets import ( | ||
| QGraphicsItem, | ||
| QGraphicsRectItem, | ||
| QGraphicsTextItem, | ||
| QGraphicsDropShadowEffect, | ||
| QStyle | ||
| ) | ||
| from .project_item_icon import ProjectItemIcon | ||
|
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|
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| class Group(QGraphicsRectItem): | ||
|
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| FONT_SIZE_PIXELS = 12 # pixel size to prevent font scaling by system | ||
|
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| def __init__(self, toolbox, name, item_names): | ||
| super().__init__() | ||
| print(f"toolbox:{toolbox}") | ||
| self._toolbox = toolbox | ||
| self._name = name | ||
| self._item_names = item_names # strings | ||
| self._items = dict() # QGraphicsItems | ||
| conns = self._toolbox.project.connections + self._toolbox.project.jumps | ||
| for name in item_names: | ||
| try: | ||
| icon = self._toolbox.project.get_item(name).get_icon() | ||
| self._items[name] = icon | ||
| except KeyError: # name refers to a link or to a jump | ||
| link_icons = [link.graphics_item for link in conns if link.name == name] | ||
| self._items[name] = link_icons[0] | ||
| for item_icon in self._items.values(): | ||
| item_icon.my_groups.add(self) | ||
| self._n_items = len(self._items) | ||
| disband_action = QAction("Ungroup items") | ||
| disband_action.triggered.connect(lambda checked=False, group_name=self.name: self._toolbox.ui.graphicsView.push_disband_group_command(checked, group_name)) | ||
| rename_group_action = QAction("Rename group...") | ||
| rename_group_action.triggered.connect(lambda checked=False, group_name=self.name: self._toolbox.rename_group(checked, group_name)) | ||
| self._actions = [disband_action, rename_group_action] | ||
| self.margins = QMarginsF(0, 0, 0, 10.0) # left, top, right, bottom | ||
| self.setFlag(QGraphicsItem.GraphicsItemFlag.ItemIsSelectable, enabled=True) | ||
| self.setAcceptHoverEvents(True) | ||
| self.setZValue(-10) | ||
| self.name_item = QGraphicsTextItem(self._name, parent=self) | ||
| self.set_name_attributes() | ||
| self.setRect(self.rect()) | ||
| self._reposition_name_item() | ||
| self.setBrush(self._toolbox.ui.graphicsView.scene().bg_color.lighter(107)) | ||
| self.normal_pen = QPen(QBrush("gray"), 1, Qt.PenStyle.SolidLine) | ||
| self.selected_pen_for_ui_lite = QPen(QBrush("gray"), 5, Qt.PenStyle.DashLine) | ||
| self.selected_pen = QPen(QBrush("black"), 1, Qt.PenStyle.DashLine) | ||
| self.setPen(self.normal_pen) | ||
| self.set_graphics_effects() | ||
|
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||
| @property | ||
| def name(self): | ||
| return self._name | ||
|
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| @name.setter | ||
| def name(self, new_name): | ||
| self._name = new_name | ||
| self.name_item.setPlainText(new_name) | ||
|
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| @property | ||
| def items(self): | ||
| return self._items.values() | ||
|
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| @property | ||
| def item_names(self): | ||
| return list(self._items.keys()) | ||
|
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| @property | ||
| def project_items(self): | ||
| return [item for item in self.items if isinstance(item, ProjectItemIcon)] | ||
|
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| @property | ||
| def n_items(self): | ||
| return len(self._items) | ||
|
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| def actions(self): | ||
| return self._actions | ||
|
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| def set_name_attributes(self): | ||
| """Sets name item attributes (font, size, style, alignment).""" | ||
| self.name_item.setZValue(100) | ||
| font = self.name_item.font() | ||
| font.setPixelSize(self.FONT_SIZE_PIXELS) | ||
| font.setBold(True) | ||
| self.name_item.setFont(font) | ||
| option = self.name_item.document().defaultTextOption() | ||
| option.setAlignment(Qt.AlignmentFlag.AlignCenter) | ||
| self.name_item.document().setDefaultTextOption(option) | ||
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| def _reposition_name_item(self): | ||
| """Sets name item position (left side on top of the group icon).""" | ||
| main_rect = self.boundingRect() | ||
| name_rect = self.name_item.sceneBoundingRect() | ||
| self.name_item.setPos(main_rect.left(), main_rect.y() - name_rect.height() - 4) | ||
|
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| def add_item(self, name): | ||
| """Adds item to this Group. | ||
| Args: | ||
| name (str): Project item or Link name | ||
| """ | ||
| try: | ||
| icon = self._toolbox.project.get_item(name).get_icon() | ||
| except KeyError: # name refers to a link or to a jump | ||
| conns = self._toolbox.project.connections + self._toolbox.project.jumps | ||
| link_icons = [link.graphics_item for link in conns if link.name == name] | ||
| icon = link_icons[0] | ||
| icon.my_groups.add(self) | ||
| self._items[name] = icon | ||
| self.update_group_rect() | ||
|
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| def remove_item(self, name): | ||
| """Removes item from this Group. | ||
| Args: | ||
| name (str): Project item name | ||
| """ | ||
| item = self._items.pop(name) | ||
| for conn in item.connectors.values(): | ||
| for link in conn.outgoing_links(): | ||
| if link.name in self._items.keys(): | ||
| self._items.pop(link.name) | ||
| link.my_groups.remove(self) | ||
| for link in conn.incoming_links(): | ||
| if link.name in self._items.keys(): | ||
| self._items.pop(link.name) | ||
| link.my_groups.remove(self) | ||
| item.my_groups.remove(self) | ||
| self.update_group_rect() | ||
|
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| def remove_all_items(self): | ||
| """Removes all items (ProjectItemIcons) from this group.""" | ||
| for item in self.project_items: | ||
| self.remove_item(item.name) | ||
|
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| def update_group_rect(self): | ||
| """Updates group rectangle and it's attributes when group member(s) is/are moved.""" | ||
| self.setRect(self.rect()) | ||
| self._reposition_name_item() | ||
|
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| def rect(self): | ||
| """Calculates the size of the rectangle for this group.""" | ||
| united_rect = QRectF() | ||
| for item in self.items: | ||
| if isinstance(item, ProjectItemIcon): | ||
| united_rect = united_rect.united(item.name_item.sceneBoundingRect().united(item.sceneBoundingRect())) | ||
| else: | ||
| united_rect = united_rect.united(item.sceneBoundingRect()) | ||
| rect_with_margins = united_rect.marginsAdded(self.margins) | ||
| return rect_with_margins | ||
|
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| def set_graphics_effects(self): | ||
| shadow_effect = QGraphicsDropShadowEffect() | ||
| shadow_effect.setOffset(1) | ||
| shadow_effect.setEnabled(False) | ||
| self.setGraphicsEffect(shadow_effect) | ||
|
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| def mousePressEvent(self, event): | ||
| """Sets all items belonging to this group selected. | ||
| Args: | ||
| event (QMousePressEvent): Event | ||
| """ | ||
| event.accept() | ||
| path = QPainterPath() | ||
| path.addRect(self.rect()) | ||
| self._toolbox.toolboxuibase.active_ui_window.ui.graphicsView.scene().setSelectionArea(path, QTransform()) | ||
|
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| def mouseReleaseEvent(self, event): | ||
| """Accepts the event to prevent graphics view's mouseReleaseEvent from clearing the selections.""" | ||
| event.accept() | ||
|
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| def contextMenuEvent(self, event): | ||
| """Opens context-menu in design mode.""" | ||
| if self._toolbox.active_ui_mode == "toolboxuilite": | ||
| event.ignore() # Send context-menu request to graphics view | ||
| return | ||
| event.accept() | ||
| self.scene().clearSelection() | ||
| self.setSelected(True) | ||
| self._toolbox.show_project_or_item_context_menu(event.screenPos(), self) | ||
|
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| def hoverEnterEvent(self, event): | ||
| """Sets a drop shadow effect to icon when mouse enters group boundaries. | ||
| Args: | ||
| event (QGraphicsSceneMouseEvent): Event | ||
| """ | ||
| self.prepareGeometryChange() | ||
| self.graphicsEffect().setEnabled(True) | ||
| event.accept() | ||
|
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| def hoverLeaveEvent(self, event): | ||
| """Disables the drop shadow when mouse leaves group boundaries. | ||
| Args: | ||
| event (QGraphicsSceneMouseEvent): Event | ||
| """ | ||
| self.prepareGeometryChange() | ||
| self.graphicsEffect().setEnabled(False) | ||
| event.accept() | ||
|
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| def to_dict(self): | ||
| """Returns a dictionary mapping group name to item names.""" | ||
| return {self.name: self.item_names} | ||
|
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| def paint(self, painter, option, widget=None): | ||
| """Sets a dashline pen when selected.""" | ||
| if option.state & QStyle.StateFlag.State_Selected: | ||
| option.state &= ~QStyle.StateFlag.State_Selected | ||
| if self._toolbox.active_ui_mode == "toolboxui": | ||
| self.setPen(self.selected_pen) | ||
| elif self._toolbox.active_ui_mode == "toolboxuilite": | ||
| self.setPen(self.selected_pen_for_ui_lite) | ||
| else: | ||
| self.setPen(self.normal_pen) | ||
| super().paint(painter, option, widget) |
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