Copy/paste on canvas

src/bedit_gui/views/graph_editor_widget.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 from math import hypot
 
 from PySide6.QtCore import QEvent, QObject, QPointF, QRectF, QSize, QTimer, Qt, Signal
-from PySide6.QtGui import QColor, QPainter, QPainterPath, QPen, QWheelEvent
+from PySide6.QtGui import QColor, QCursor, QPainter, QPainterPath, QPen, QWheelEvent
 from PySide6.QtWidgets import QGraphicsItem, QGraphicsPathItem, QGraphicsPixmapItem, QGraphicsScene, QGraphicsSceneMouseEvent, QGraphicsView, QWidget
 
 from bedit_core.models import BondCausality, BondConnection, Component, ComponentID, ConnectionID, GraphImplementation, SignalConnection
@@ -55,7 +55,6 @@ class GraphConnectionItem(QGraphicsPathItem):
         super().__init__()
         self.setPath(self._connection_path(points, half_arrow, tick_at_source))
         pen = QPen(QColor("#202020"), CONNECTION_WIDTH)
-        pen.setCosmetic(True)
         self.setPen(pen)
         self.setZValue(-1)
 
@@ -137,9 +136,17 @@ class GraphComponentItem(QGraphicsPixmapItem):
         if self.pos() != self._drag_start:
             self.editor.finish_component_move(self.component_id, position)
 
+    def contextMenuEvent(self, event) -> None:
+        if not self.isSelected():
+            self.scene().clearSelection()
+            self.setSelected(True)
+        self.editor.component_context_menu_requested.emit(self.component_id, event.screenPos())
+        event.accept()
+
 
 class GraphEditorWidget(QWidget):
     component_move_requested = Signal(object, object, object)
+    component_context_menu_requested = Signal(object, object)
 
     def __init__(self, parent: QWidget | None = None, snap_to_grid_size: int = 4) -> None:
         super().__init__(parent)
@@ -298,6 +305,18 @@ class GraphEditorWidget(QWidget):
     def component(self) -> Component | None:
         return self._component
 
+    def selected_component_ids(self) -> list[ComponentID]:
+        return [item.component_id for item in self.scene.selectedItems() if isinstance(item, GraphComponentItem)]
+
+    def paste_position(self) -> tuple[int, int]:
+        viewport = self.ui.graphicsView.viewport()
+        viewport_position = viewport.mapFromGlobal(QCursor.pos())
+        if not viewport.rect().contains(viewport_position):
+            viewport_position = viewport.rect().center()
+        scene_position = self.ui.graphicsView.mapToScene(viewport_position)
+        size = self.snap_to_grid_size
+        return round(scene_position.x() / size) * size, round(scene_position.y() / size) * size
+
     def zoom_to_fit(self) -> None:
         bounds = self.scene.itemsBoundingRect()
         if bounds.isEmpty():