class MainWindow(QMainWindow):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.undoStack = QUndoStack(self)
self.undoStack.cleanChanged.connect(self.cleanChanged)
self.undoAction = self.undoStack.createUndoAction(self, "&Undo")
self.undoAction.setShortcut(QKeySequence.Undo)
self.redoAction = self.undoStack.createRedoAction(self, "&Redo")
self.redoAction.setShortcut(QKeySequence.Redo)
self.messageLabel = QLabel()
self.coordLabel = QLabel()
self.stopwatchLabel = QLabel()
self.time = QTime(0, 0)
self.stopwatch = QTimer()
self.undoView = QUndoView(self.undoStack)
self.graphicsScene = GraphicsScene(self)
self.copyList = []
def setupUi(self):
if QIcon.themeName() == "":
QIcon.setThemeName('breeze')
self.openIcon = QIcon().fromTheme("document-open")
self.actionOpen_Datasets.setIcon(self.openIcon)
self.saveIcon = QIcon().fromTheme("document-save")
self.actionSave.setIcon(self.saveIcon)
self.closeIcon = QIcon().fromTheme("document-close")
self.actionClose_Dataset.setIcon(self.closeIcon)
self.statusbar.addWidget(self.messageLabel)
self.statusbar.addWidget(self.coordLabel)
self.statusbar.addWidget(self.stopwatchLabel)
self.stopwatch.setInterval(1000)
self.stopwatch.timeout.connect(self.updateStopWatchLabel)
self.stopwatchStartIcon = QIcon().fromTheme("chronometer-start")
self.actionTimer_Start.setIcon(self.stopwatchStartIcon)
self.actionTimer_Start.triggered.connect(self.startStopWatch)
self.stopwatchStopIcon = QIcon().fromTheme("chronometer-pause")
self.actionTimer_Stop.setIcon(self.stopwatchStopIcon)
self.actionTimer_Stop.triggered.connect(self.stopStopWatch)
self.stopwatchResetIcon = QIcon().fromTheme("chronometer-reset")
self.actionTimer_Reset.setIcon(self.stopwatchResetIcon)
self.actionTimer_Reset.triggered.connect(self.resetStopWatch)
self.leftIcon = QIcon().fromTheme("go-previous")
self.actionSend_To_Left.setIcon(self.leftIcon)
self.rightIcon = QIcon().fromTheme("go-next")
self.actionSend_To_Right.setIcon(self.rightIcon)
self.upIcon = QIcon().fromTheme("go-up")
self.actionPrevious_Item.setIcon(self.upIcon)
self.downIcon = QIcon().fromTheme("go-down")
self.actionNext_Item.setIcon(self.downIcon)
self.undoView.setWindowTitle("Command List")
self.undoView.show()
self.undoView.setAttribute(Qt.WA_QuitOnClose, False)
self.menuEdit.addAction(self.undoAction)
self.menuEdit.addAction(self.redoAction)
self.graphicsView.setScene(self.graphicsScene)
self.graphicsView.mouseMoved.connect(self.coordLabel.setText)
self.graphicsScene.tabWidget = self.tabWidget
self.graphicsScene.comboBox = self.comboBox
self.graphicsScene.signalHandler.boxPressed.connect(self.selectBox)
self.graphicsScene.signalHandler.boxChanged.connect(self.changeBox)
self.graphicsScene.signalHandler.boxCreated.connect(self.createItem)
@Slot()
def sendToLeft(self):
originIndex = self.tabWidget.currentIndex()
numTabs = self.tabWidget.count()
targetIndex = (numTabs + originIndex - 1) % numTabs
modelIndex = self.tabWidget.getCurrentTableView().currentIndex()
if modelIndex.isValid():
self.undoStack.beginMacro(f"Send item to {targetIndex}")
sendToCommand = SendToCommand(originIndex, targetIndex,
modelIndex.row(), self.tabWidget,
self.graphicsScene)
self.undoStack.push(sendToCommand)
modelIndex = modelIndex.model().index(modelIndex.row(),
modelIndex.column())
if modelIndex.isValid():
self.cellClicked(originIndex, modelIndex, originIndex,
modelIndex)
self.undoStack.endMacro()
@Slot()
def sendToRight(self):
originIndex = self.tabWidget.currentIndex()
numTabs = self.tabWidget.count()
targetIndex = (originIndex + 1) % numTabs
modelIndex = self.tabWidget.getCurrentTableView().currentIndex()
if modelIndex.isValid():
self.undoStack.beginMacro(f"Send item to {targetIndex}")
sendToCommand = SendToCommand(originIndex, targetIndex,
modelIndex.row(), self.tabWidget,
self.graphicsScene)
self.undoStack.push(sendToCommand)
modelIndex = modelIndex.model().index(modelIndex.row(),
modelIndex.column())
if modelIndex.isValid():
self.cellClicked(originIndex, modelIndex, originIndex,
modelIndex)
self.undoStack.endMacro()
@Slot()
@Slot(int)
def closeDataset(self, i=-1):
# put a dialog if there is a pending modification
# say that modifications are not lost and retrievable with CTRL-Z
if self.tabWidget.count() > 0:
if i == -1:
i = self.tabWidget.currentIndex()
deleteDatasetCommand = DeleteDatasetCommand([i], self.tabWidget,
self.comboBox,
self.graphicsView,
self.graphicsScene)
self.undoStack.push(deleteDatasetCommand)
@Slot()
def openDatasets(self):
"""Open dataset directory"""
prevTabIndex = self.tabWidget.currentIndex()
prevModelIndex = self.tabWidget.getCurrentSelectedCell()
numTabs = self.tabWidget.count()
(filenames, _ext) = QFileDialog.getOpenFileNames(
self,
QApplication.translate("MainWindow", "Open datasets", None, -1),
"/home/kwon-young/Documents/PartageVirtualBox/data/omr_dataset/choi_dataset",
"*.csv")
if filenames:
self.undoStack.beginMacro(f"open Datasets {filenames}")
filenames.sort()
openDatasetCommand = OpenDatasetCommand(filenames, self.tabWidget,
self.comboBox,
self.graphicsScene,
self.messageLabel)
self.undoStack.push(openDatasetCommand)
tabIndex = numTabs
if self.tabWidget.count() > 0:
modelIndex = self.tabWidget.getTableModel(tabIndex).index(0, 0)
if modelIndex.isValid():
self.cellClicked(tabIndex, modelIndex, prevTabIndex,
prevModelIndex)
self.undoStack.endMacro()
@Slot(int)
def currentTabChanged(self, index):
self.tabWidget.setCurrentIndex(index)
for tabIndex in range(self.tabWidget.count()):
self.graphicsScene.changeTabColor(
tabIndex, self.tabWidget.color_map(tabIndex))
@Slot(int, QModelIndex, int, QModelIndex)
def cellClicked(self, tabIndex, cellIndex, prevTabIndex, prevCellIndex):
cellClickedCommand = CellClickedCommand(
tabIndex, cellIndex, prevTabIndex, prevCellIndex, self.tabWidget,
self.graphicsScene, self.graphicsView, self.comboBox,
self.messageLabel)
self.undoStack.push(cellClickedCommand)
@Slot()
def SelectNextItem(self):
if self.tabWidget.count() > 0:
tabIndex = self.tabWidget.currentIndex()
prevCellIndex = self.tabWidget.getCurrentSelectedCell()
model = self.tabWidget.getCurrentTableModel()
rowCount = model.rowCount(QModelIndex())
nextRow = (prevCellIndex.row() + 1) % rowCount
cellIndex = model.index(nextRow, prevCellIndex.column())
cellClickedCommand = CellClickedCommand(
tabIndex, cellIndex, tabIndex, prevCellIndex, self.tabWidget,
self.graphicsScene, self.graphicsView, self.comboBox,
self.messageLabel)
self.undoStack.push(cellClickedCommand)
@Slot()
def SelectPreviousItem(self):
if self.tabWidget.count() > 0:
tabIndex = self.tabWidget.currentIndex()
prevCellIndex = self.tabWidget.getCurrentSelectedCell()
model = self.tabWidget.getCurrentTableModel()
rowCount = model.rowCount(QModelIndex())
nextRow = (rowCount + prevCellIndex.row() - 1) % rowCount
cellIndex = model.index(nextRow, prevCellIndex.column())
cellClickedCommand = CellClickedCommand(
tabIndex, cellIndex, tabIndex, prevCellIndex, self.tabWidget,
self.graphicsScene, self.graphicsView, self.comboBox,
self.messageLabel)
self.undoStack.push(cellClickedCommand)
@Slot()
def SelectNextPage(self):
if self.tabWidget.count() > 0:
tabIndex = self.tabWidget.currentIndex()
prevCellIndex = self.tabWidget.getCurrentSelectedCell()
model = self.tabWidget.getCurrentTableModel()
prevPage = model.pageAtIndex(prevCellIndex)
rowCount = model.rowCount(QModelIndex())
for i in range(0, rowCount):
row = (prevCellIndex.row() + i) % rowCount
cellIndex = model.index(row, prevCellIndex.column())
page = model.pageAtIndex(cellIndex)
if prevPage.split("-")[0] != page.split("-")[0]:
break
cellClickedCommand = CellClickedCommand(
tabIndex, cellIndex, tabIndex, prevCellIndex, self.tabWidget,
self.graphicsScene, self.graphicsView, self.comboBox,
self.messageLabel)
self.undoStack.push(cellClickedCommand)
@Slot()
def SelectPreviousPage(self):
if self.tabWidget.count() > 0:
tabIndex = self.tabWidget.currentIndex()
prevCellIndex = self.tabWidget.getCurrentSelectedCell()
model = self.tabWidget.getCurrentTableModel()
prevPage = model.pageAtIndex(prevCellIndex)
rowCount = model.rowCount(QModelIndex())
for i in range(0, rowCount):
row = (prevCellIndex.row() - i) % rowCount
cellIndex = model.index(row, prevCellIndex.column())
page = model.pageAtIndex(cellIndex)
if prevPage.split("-")[0] != page.split("-")[0]:
break
cellClickedCommand = CellClickedCommand(
tabIndex, cellIndex, tabIndex, prevCellIndex, self.tabWidget,
self.graphicsScene, self.graphicsView, self.comboBox,
self.messageLabel)
self.undoStack.push(cellClickedCommand)
@Slot()
def selectNextLabel(self):
if self.comboBox.count() > 0:
index = self.comboBox.currentIndex()
newIndex = (index + 1) % self.comboBox.count()
label = self.comboBox.itemText(newIndex)
tabIndex = self.tabWidget.currentIndex()
cellIndex = self.tabWidget.getCurrentSelectedCell()
labelChangedCommand = LabelChangedCommand(label, tabIndex,
cellIndex,
self.tabWidget,
self.graphicsScene,
self.comboBox)
self.undoStack.push(labelChangedCommand)
@Slot()
def selectPreviousLabel(self):
if self.comboBox.count() > 0:
index = self.comboBox.currentIndex()
newIndex = ((self.comboBox.count() + index - 1) %
self.comboBox.count())
label = self.comboBox.itemText(newIndex)
tabIndex = self.tabWidget.currentIndex()
cellIndex = self.tabWidget.getCurrentSelectedCell()
labelChangedCommand = LabelChangedCommand(label, tabIndex,
cellIndex,
self.tabWidget,
self.graphicsScene,
self.comboBox)
self.undoStack.push(labelChangedCommand)
@Slot(int)
def labelChanged(self, index):
label = self.comboBox.itemText(index)
tabIndex = self.tabWidget.currentIndex()
cellIndex = self.tabWidget.getCurrentSelectedCell()
labelChangedCommand = LabelChangedCommand(label, tabIndex, cellIndex,
self.tabWidget,
self.graphicsScene,
self.comboBox)
self.undoStack.push(labelChangedCommand)
@Slot()
def saveDataToDisk(self):
self.undoStack.setClean()
for name, model in zip(self.tabWidget.filenames(),
self.tabWidget.models()):
model.save(name)
@Slot(bool)
def cleanChanged(self, clean):
self.setWindowModified(not clean)
@Slot(int, int)
def selectBox(self, tabIndex, rowIndex):
if tabIndex != self.tabWidget.currentIndex() or \
rowIndex != self.tabWidget.getCurrentSelectedCell().row():
selectBoxCommand = SelectBoxCommand(tabIndex, rowIndex,
self.tabWidget,
self.graphicsScene,
self.comboBox)
self.undoStack.push(selectBoxCommand)
@Slot(int, int, QRectF)
def changeBox(self, tabIndex, rowIndex, box):
moveBoxCommand = MoveBoxCommand(tabIndex, rowIndex, box,
self.tabWidget, self.graphicsScene)
self.undoStack.push(moveBoxCommand)
@Slot(QRectF, QRectF)
def viewportMoved(self, rect, prevRect):
viewportMovedCommand = ViewportMovedCommand(rect, prevRect,
self.graphicsView)
self.undoStack.push(viewportMovedCommand)
@Slot()
def updateStopWatchLabel(self):
elapsed = QTime(0, 0).addMSecs(self.time.elapsed())
self.stopwatchLabel.setText(elapsed.toString())
@Slot()
def startStopWatch(self):
self.time.start()
self.stopwatch.start(1000)
@Slot()
def stopStopWatch(self):
self.stopwatch.stop()
@Slot()
def resetStopWatch(self):
self.time.start()
self.stopwatchLabel.setText(QTime(0, 0).toString())
@Slot()
def deleteItem(self):
tabIndex = self.tabWidget.currentIndex()
cellIndex = self.tabWidget.getCurrentSelectedCell()
self.undoStack.beginMacro(f"Delete item {tabIndex}:{cellIndex.row()}")
deleteItemCommand = DeleteItemCommand(tabIndex, cellIndex,
self.tabWidget,
self.graphicsView,
self.graphicsScene,
self.comboBox)
self.undoStack.push(deleteItemCommand)
cellIndex = cellIndex.model().index(cellIndex.row(),
cellIndex.column())
if cellIndex.isValid():
self.cellClicked(tabIndex, cellIndex, tabIndex, cellIndex)
self.undoStack.endMacro()
@Slot(ResizableRect)
def createItem(self, rect):
self.undoStack.beginMacro(
f"Create item {rect.tabIndex}:{rect.rowIndex}")
createItemCommand = CreateItemCommand(rect, self.tabWidget,
self.graphicsScene,
self.comboBox)
self.undoStack.push(createItemCommand)
self.selectBox(rect.tabIndex, rect.rowIndex)
self.undoStack.endMacro()
@Slot()
def tabItemForward(self):
changeTabItemZValueCommand = ChangeTabItemZValueCommand(
self.tabWidget.currentIndex(), 1, self.graphicsScene)
self.undoStack.push(changeTabItemZValueCommand)
@Slot()
def tabItemBackward(self):
changeTabItemZValueCommand = ChangeTabItemZValueCommand(
self.tabWidget.currentIndex(), -1, self.graphicsScene)
self.undoStack.push(changeTabItemZValueCommand)
@Slot()
def copy(self):
tabIndex = self.tabWidget.currentIndex()
cellIndex = self.tabWidget.getCurrentSelectedCell()
box = self.graphicsScene.box(tabIndex, cellIndex.row())
copyCommand = CopyCommand(box, self.copyList)
self.undoStack.push(copyCommand)
@Slot()
def paste(self):
pos = self.graphicsView.mapFromGlobal(QCursor.pos())
scenePos = self.graphicsView.mapToScene(pos)
prop = self.copyList[-1]
self.undoStack.beginMacro(f"paste item {prop.box}")
pasteCommand = PasteCommand(scenePos, prop, self.tabWidget,
self.graphicsScene)
self.undoStack.push(pasteCommand)
self.selectBox(prop.tabIndex, prop.rowIndex)
self.undoStack.endMacro()
class Flow(QGraphicsView):
def __init__(self, main_window, parent_script, config=None):
super(Flow, self).__init__()
# SHORTCUTS
place_new_node_shortcut = QShortcut(QKeySequence('Shift+P'), self)
place_new_node_shortcut.activated.connect(
self.place_new_node_by_shortcut)
move_selected_nodes_left_shortcut = QShortcut(
QKeySequence('Shift+Left'), self)
move_selected_nodes_left_shortcut.activated.connect(
self.move_selected_nodes_left)
move_selected_nodes_up_shortcut = QShortcut(QKeySequence('Shift+Up'),
self)
move_selected_nodes_up_shortcut.activated.connect(
self.move_selected_nodes_up)
move_selected_nodes_right_shortcut = QShortcut(
QKeySequence('Shift+Right'), self)
move_selected_nodes_right_shortcut.activated.connect(
self.move_selected_nodes_right)
move_selected_nodes_down_shortcut = QShortcut(
QKeySequence('Shift+Down'), self)
move_selected_nodes_down_shortcut.activated.connect(
self.move_selected_nodes_down)
select_all_shortcut = QShortcut(QKeySequence('Ctrl+A'), self)
select_all_shortcut.activated.connect(self.select_all)
copy_shortcut = QShortcut(QKeySequence.Copy, self)
copy_shortcut.activated.connect(self.copy)
cut_shortcut = QShortcut(QKeySequence.Cut, self)
cut_shortcut.activated.connect(self.cut)
paste_shortcut = QShortcut(QKeySequence.Paste, self)
paste_shortcut.activated.connect(self.paste)
# UNDO/REDO
self.undo_stack = QUndoStack(self)
self.undo_action = self.undo_stack.createUndoAction(self, 'undo')
self.undo_action.setShortcuts(QKeySequence.Undo)
self.redo_action = self.undo_stack.createRedoAction(self, 'redo')
self.redo_action.setShortcuts(QKeySequence.Redo)
undo_shortcut = QShortcut(QKeySequence.Undo, self)
undo_shortcut.activated.connect(self.undo_activated)
redo_shortcut = QShortcut(QKeySequence.Redo, self)
redo_shortcut.activated.connect(self.redo_activated)
# GENERAL ATTRIBUTES
self.parent_script = parent_script
self.all_node_instances: [NodeInstance] = []
self.all_node_instance_classes = main_window.all_node_instance_classes # ref
self.all_nodes = main_window.all_nodes # ref
self.gate_selected: PortInstanceGate = None
self.dragging_connection = False
self.ignore_mouse_event = False # for stylus - see tablet event
self.last_mouse_move_pos: QPointF = None
self.node_place_pos = QPointF()
self.left_mouse_pressed_in_flow = False
self.mouse_press_pos: QPointF = None
self.tablet_press_pos: QPointF = None
self.auto_connection_gate = None # stores the gate that we may try to auto connect to a newly placed NI
self.panning = False
self.pan_last_x = None
self.pan_last_y = None
self.current_scale = 1
self.total_scale_div = 1
# SETTINGS
self.algorithm_mode = Flow_AlgorithmMode()
self.viewport_update_mode = Flow_ViewportUpdateMode()
# CREATE UI
scene = QGraphicsScene(self)
scene.setItemIndexMethod(QGraphicsScene.NoIndex)
scene.setSceneRect(0, 0, 10 * self.width(), 10 * self.height())
self.setScene(scene)
self.setCacheMode(QGraphicsView.CacheBackground)
self.setViewportUpdateMode(QGraphicsView.BoundingRectViewportUpdate)
self.setRenderHint(QPainter.Antialiasing)
self.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
self.setDragMode(QGraphicsView.RubberBandDrag)
scene.selectionChanged.connect(self.selection_changed)
self.setAcceptDrops(True)
self.centerOn(
QPointF(self.viewport().width() / 2,
self.viewport().height() / 2))
# NODE CHOICE WIDGET
self.node_choice_proxy = FlowProxyWidget(self)
self.node_choice_proxy.setZValue(1000)
self.node_choice_widget = NodeChoiceWidget(
self, main_window.all_nodes) # , main_window.node_images)
self.node_choice_proxy.setWidget(self.node_choice_widget)
self.scene().addItem(self.node_choice_proxy)
self.hide_node_choice_widget()
# ZOOM WIDGET
self.zoom_proxy = FlowProxyWidget(self)
self.zoom_proxy.setFlag(QGraphicsItem.ItemIgnoresTransformations, True)
self.zoom_proxy.setZValue(1001)
self.zoom_widget = FlowZoomWidget(self)
self.zoom_proxy.setWidget(self.zoom_widget)
self.scene().addItem(self.zoom_proxy)
self.set_zoom_proxy_pos()
# STYLUS
self.stylus_mode = ''
self.current_drawing = None
self.drawing = False
self.drawings = []
self.stylus_modes_proxy = FlowProxyWidget(self)
self.stylus_modes_proxy.setFlag(
QGraphicsItem.ItemIgnoresTransformations, True)
self.stylus_modes_proxy.setZValue(1001)
self.stylus_modes_widget = FlowStylusModesWidget(self)
self.stylus_modes_proxy.setWidget(self.stylus_modes_widget)
self.scene().addItem(self.stylus_modes_proxy)
self.set_stylus_proxy_pos()
self.setAttribute(Qt.WA_TabletTracking)
# DESIGN THEME
Design.flow_theme_changed.connect(self.theme_changed)
if config:
config: dict
# algorithm mode
if config.keys().__contains__('algorithm mode'):
if config['algorithm mode'] == 'data flow':
self.parent_script.widget.ui.algorithm_data_flow_radioButton.setChecked(
True)
self.algorithm_mode.mode_data_flow = True
else: # 'exec flow'
self.parent_script.widget.ui.algorithm_exec_flow_radioButton.setChecked(
True)
self.algorithm_mode.mode_data_flow = False
# viewport update mode
if config.keys().__contains__('viewport update mode'):
if config['viewport update mode'] == 'sync':
self.parent_script.widget.ui.viewport_update_mode_sync_radioButton.setChecked(
True)
self.viewport_update_mode.sync = True
else: # 'async'
self.parent_script.widget.ui.viewport_update_mode_async_radioButton.setChecked(
True)
self.viewport_update_mode.sync = False
node_instances = self.place_nodes_from_config(config['nodes'])
self.connect_nodes_from_config(node_instances,
config['connections'])
if list(config.keys()).__contains__(
'drawings'
): # not all (old) project files have drawings arr
self.place_drawings_from_config(config['drawings'])
self.undo_stack.clear()
def theme_changed(self, t):
self.viewport().update()
def algorithm_mode_data_flow_toggled(self, checked):
self.algorithm_mode.mode_data_flow = checked
def viewport_update_mode_sync_toggled(self, checked):
self.viewport_update_mode.sync = checked
def selection_changed(self):
selected_items = self.scene().selectedItems()
selected_node_instances = list(
filter(find_NI_in_object, selected_items))
if len(selected_node_instances) == 1:
self.parent_script.show_NI_code(selected_node_instances[0])
elif len(selected_node_instances) == 0:
self.parent_script.show_NI_code(None)
def contextMenuEvent(self, event):
QGraphicsView.contextMenuEvent(self, event)
# in the case of the menu already being shown by a widget under the mouse, the event is accepted here
if event.isAccepted():
return
for i in self.items(event.pos()):
if find_type_in_object(i, NodeInstance):
ni: NodeInstance = i
menu: QMenu = ni.get_context_menu()
menu.exec_(event.globalPos())
event.accept()
def undo_activated(self):
"""Triggered by ctrl+z"""
self.undo_stack.undo()
self.viewport().update()
def redo_activated(self):
"""Triggered by ctrl+y"""
self.undo_stack.redo()
self.viewport().update()
def mousePressEvent(self, event):
Debugger.debug('mouse press event received, point:', event.pos())
# to catch tablet events (for some reason, it results in a mousePrEv too)
if self.ignore_mouse_event:
self.ignore_mouse_event = False
return
# there might be a proxy widget meant to receive the event instead of the flow
QGraphicsView.mousePressEvent(self, event)
# to catch any Proxy that received the event. Checking for event.isAccepted() or what is returned by
# QGraphicsView.mousePressEvent(...) both didn't work so far, so I do it manually
if self.ignore_mouse_event:
self.ignore_mouse_event = False
return
if event.button() == Qt.LeftButton:
if self.node_choice_proxy.isVisible():
self.hide_node_choice_widget()
else:
if find_type_in_object(self.itemAt(event.pos()),
PortInstanceGate):
self.gate_selected = self.itemAt(event.pos())
self.dragging_connection = True
self.left_mouse_pressed_in_flow = True
elif event.button() == Qt.RightButton:
if len(self.items(event.pos())) == 0:
self.node_choice_widget.reset_list()
self.show_node_choice_widget(event.pos())
elif event.button() == Qt.MidButton:
self.panning = True
self.pan_last_x = event.x()
self.pan_last_y = event.y()
event.accept()
self.mouse_press_pos = self.mapToScene(event.pos())
def mouseMoveEvent(self, event):
QGraphicsView.mouseMoveEvent(self, event)
if self.panning: # middle mouse pressed
self.pan(event.pos())
event.accept()
self.last_mouse_move_pos = self.mapToScene(event.pos())
if self.dragging_connection:
self.viewport().repaint()
def mouseReleaseEvent(self, event):
# there might be a proxy widget meant to receive the event instead of the flow
QGraphicsView.mouseReleaseEvent(self, event)
if self.ignore_mouse_event or \
(event.button() == Qt.LeftButton and not self.left_mouse_pressed_in_flow):
self.ignore_mouse_event = False
return
elif event.button() == Qt.MidButton:
self.panning = False
# connection dropped over specific gate
if self.dragging_connection and self.itemAt(event.pos()) and \
find_type_in_object(self.itemAt(event.pos()), PortInstanceGate):
self.connect_gates__cmd(self.gate_selected,
self.itemAt(event.pos()))
# connection dropped over NodeInstance - auto connect
elif self.dragging_connection and find_type_in_objects(
self.items(event.pos()), NodeInstance):
# find node instance
ni_under_drop = None
for item in self.items(event.pos()):
if find_type_in_object(item, NodeInstance):
ni_under_drop = item
break
# connect
self.try_conn_gate_and_ni(self.gate_selected, ni_under_drop)
# connection dropped somewhere else - show node choice widget
elif self.dragging_connection:
self.auto_connection_gate = self.gate_selected
self.show_node_choice_widget(event.pos())
self.left_mouse_pressed_in_flow = False
self.dragging_connection = False
self.gate_selected = None
self.viewport().repaint()
def keyPressEvent(self, event):
QGraphicsView.keyPressEvent(self, event)
if event.isAccepted():
return
if event.key() == Qt.Key_Escape: # do I need that... ?
self.clearFocus()
self.setFocus()
return True
elif event.key() == Qt.Key_Delete:
self.remove_selected_components()
def wheelEvent(self, event):
if event.modifiers() == Qt.CTRL and event.angleDelta().x() == 0:
self.zoom(event.pos(), self.mapToScene(event.pos()),
event.angleDelta().y())
event.accept()
return True
QGraphicsView.wheelEvent(self, event)
def tabletEvent(self, event):
"""tabletEvent gets called by stylus operations.
LeftButton: std, no button pressed
RightButton: upper button pressed"""
# if in edit mode and not panning or starting a pan, pass on to std mouseEvent handlers above
if self.stylus_mode == 'edit' and not self.panning and not \
(event.type() == QTabletEvent.TabletPress and event.button() == Qt.RightButton):
return # let the mousePress/Move/Release-Events handle it
if event.type() == QTabletEvent.TabletPress:
self.tablet_press_pos = event.pos()
self.ignore_mouse_event = True
if event.button() == Qt.LeftButton:
if self.stylus_mode == 'comment':
new_drawing = self.create_and_place_drawing__cmd(
self.mapToScene(self.tablet_press_pos),
config=self.stylus_modes_widget.get_pen_settings())
self.current_drawing = new_drawing
self.drawing = True
elif event.button() == Qt.RightButton:
self.panning = True
self.pan_last_x = event.x()
self.pan_last_y = event.y()
elif event.type() == QTabletEvent.TabletMove:
self.ignore_mouse_event = True
if self.panning:
self.pan(event.pos())
elif event.pointerType() == QTabletEvent.Eraser:
if self.stylus_mode == 'comment':
for i in self.items(event.pos()):
if find_type_in_object(i, DrawingObject):
self.remove_drawing(i)
break
elif self.stylus_mode == 'comment' and self.drawing:
mapped = self.mapToScene(
QPoint(event.posF().x(),
event.posF().y()))
# rest = QPointF(event.posF().x()%1, event.posF().y()%1)
# exact = QPointF(mapped.x()+rest.x()%1, mapped.y()+rest.y()%1)
# TODO: use exact position (event.posF() ). Problem: mapToScene() only uses QPoint, not QPointF. The
# calculation above didn't work
if self.current_drawing.try_to_append_point(mapped):
self.current_drawing.stroke_weights.append(
event.pressure())
self.current_drawing.update()
self.viewport().update()
elif event.type() == QTabletEvent.TabletRelease:
if self.panning:
self.panning = False
if self.stylus_mode == 'comment' and self.drawing:
Debugger.debug('drawing obj finished')
self.current_drawing.finished()
self.current_drawing = None
self.drawing = False
def dragEnterEvent(self, event):
if event.mimeData().hasFormat('text/plain'):
event.acceptProposedAction()
def dragMoveEvent(self, event):
if event.mimeData().hasFormat('text/plain'):
event.acceptProposedAction()
def dropEvent(self, event):
text = event.mimeData().text()
item: QListWidgetItem = event.mimeData()
Debugger.debug('drop received in Flow:', text)
j_obj = None
type = ''
try:
j_obj = json.loads(text)
type = j_obj['type']
except Exception:
return
if type == 'variable':
self.show_node_choice_widget(
event.pos(), # only show get_var and set_var nodes
[
n for n in self.all_nodes
if find_type_in_object(n, GetVariable_Node)
or find_type_in_object(n, SetVariable_Node)
])
def drawBackground(self, painter, rect):
painter.fillRect(rect.intersected(self.sceneRect()), QColor('#333333'))
painter.setPen(Qt.NoPen)
painter.drawRect(self.sceneRect())
self.set_stylus_proxy_pos(
) # has to be called here instead of in drawForeground to prevent lagging
self.set_zoom_proxy_pos()
def drawForeground(self, painter, rect):
"""Draws all connections and borders around selected items."""
pen = QPen()
if Design.flow_theme == 'dark std':
# pen.setColor('#BCBBF2')
pen.setWidth(5)
pen.setCapStyle(Qt.RoundCap)
elif Design.flow_theme == 'dark tron':
# pen.setColor('#452666')
pen.setWidth(4)
pen.setCapStyle(Qt.RoundCap)
elif Design.flow_theme == 'ghostly' or Design.flow_theme == 'blender':
pen.setWidth(2)
pen.setCapStyle(Qt.RoundCap)
# DRAW CONNECTIONS
for ni in self.all_node_instances:
for o in ni.outputs:
for cpi in o.connected_port_instances:
if o.type_ == 'data':
pen.setStyle(Qt.DashLine)
elif o.type_ == 'exec':
pen.setStyle(Qt.SolidLine)
path = self.connection_path(
o.gate.get_scene_center_pos(),
cpi.gate.get_scene_center_pos())
w = path.boundingRect().width()
h = path.boundingRect().height()
gradient = QRadialGradient(path.boundingRect().center(),
pythagoras(w, h) / 2)
r = 0
g = 0
b = 0
if Design.flow_theme == 'dark std':
r = 188
g = 187
b = 242
elif Design.flow_theme == 'dark tron':
r = 0
g = 120
b = 180
elif Design.flow_theme == 'ghostly' or Design.flow_theme == 'blender':
r = 0
g = 17
b = 25
gradient.setColorAt(0.0, QColor(r, g, b, 255))
gradient.setColorAt(0.75, QColor(r, g, b, 200))
gradient.setColorAt(0.95, QColor(r, g, b, 0))
gradient.setColorAt(1.0, QColor(r, g, b, 0))
pen.setBrush(gradient)
painter.setPen(pen)
painter.drawPath(path)
# DRAW CURRENTLY DRAGGED CONNECTION
if self.dragging_connection:
pen = QPen('#101520')
pen.setWidth(3)
pen.setStyle(Qt.DotLine)
painter.setPen(pen)
gate_pos = self.gate_selected.get_scene_center_pos()
if self.gate_selected.parent_port_instance.direction == 'output':
painter.drawPath(
self.connection_path(gate_pos, self.last_mouse_move_pos))
else:
painter.drawPath(
self.connection_path(self.last_mouse_move_pos, gate_pos))
# DRAW SELECTED NIs BORDER
for ni in self.selected_node_instances():
pen = QPen(QColor('#245d75'))
pen.setWidth(3)
painter.setPen(pen)
painter.setBrush(Qt.NoBrush)
size_factor = 1.2
x = ni.pos().x() - ni.boundingRect().width() / 2 * size_factor
y = ni.pos().y() - ni.boundingRect().height() / 2 * size_factor
w = ni.boundingRect().width() * size_factor
h = ni.boundingRect().height() * size_factor
painter.drawRoundedRect(x, y, w, h, 10, 10)
# DRAW SELECTED DRAWINGS BORDER
for p_o in self.selected_drawings():
pen = QPen(QColor('#a3cc3b'))
pen.setWidth(2)
painter.setPen(pen)
painter.setBrush(Qt.NoBrush)
size_factor = 1.05
x = p_o.pos().x() - p_o.width / 2 * size_factor
y = p_o.pos().y() - p_o.height / 2 * size_factor
w = p_o.width * size_factor
h = p_o.height * size_factor
painter.drawRoundedRect(x, y, w, h, 6, 6)
painter.drawEllipse(p_o.pos().x(), p_o.pos().y(), 2, 2)
def get_viewport_img(self):
self.hide_proxies()
img = QImage(self.viewport().rect().width(),
self.viewport().height(), QImage.Format_ARGB32)
img.fill(Qt.transparent)
painter = QPainter(img)
painter.setRenderHint(QPainter.Antialiasing)
self.render(painter, self.viewport().rect(), self.viewport().rect())
self.show_proxies()
return img
def get_whole_scene_img(self):
self.hide_proxies()
img = QImage(self.sceneRect().width() / self.total_scale_div,
self.sceneRect().height() / self.total_scale_div,
QImage.Format_RGB32)
img.fill(Qt.transparent)
painter = QPainter(img)
painter.setRenderHint(QPainter.Antialiasing)
rect = QRectF()
rect.setLeft(-self.viewport().pos().x())
rect.setTop(-self.viewport().pos().y())
rect.setWidth(img.rect().width())
rect.setHeight(img.rect().height())
# rect is right... but it only renders from the viewport's point down-and rightwards, not from topleft (0,0) ...
self.render(painter, rect, rect.toRect())
self.show_proxies()
return img
# PROXY POSITIONS
def set_zoom_proxy_pos(self):
self.zoom_proxy.setPos(
self.mapToScene(self.viewport().width() - self.zoom_widget.width(),
0))
def set_stylus_proxy_pos(self):
self.stylus_modes_proxy.setPos(
self.mapToScene(
self.viewport().width() - self.stylus_modes_widget.width() -
self.zoom_widget.width(), 0))
def hide_proxies(self):
self.stylus_modes_proxy.hide()
self.zoom_proxy.hide()
def show_proxies(self):
self.stylus_modes_proxy.show()
self.zoom_proxy.show()
# NODE CHOICE WIDGET
def show_node_choice_widget(self, pos, nodes=None):
"""Opens the node choice dialog in the scene."""
# calculating position
self.node_place_pos = self.mapToScene(pos)
dialog_pos = QPoint(pos.x() + 1, pos.y() + 1)
# ensure that the node_choice_widget stays in the viewport
if dialog_pos.x() + self.node_choice_widget.width(
) / self.total_scale_div > self.viewport().width():
dialog_pos.setX(dialog_pos.x() -
(dialog_pos.x() + self.node_choice_widget.width() /
self.total_scale_div - self.viewport().width()))
if dialog_pos.y() + self.node_choice_widget.height(
) / self.total_scale_div > self.viewport().height():
dialog_pos.setY(dialog_pos.y() -
(dialog_pos.y() +
self.node_choice_widget.height() /
self.total_scale_div - self.viewport().height()))
dialog_pos = self.mapToScene(dialog_pos)
# open nodes dialog
# the dialog emits 'node_chosen' which is connected to self.place_node,
# so this all continues at self.place_node below
self.node_choice_widget.update_list(
nodes if nodes is not None else self.all_nodes)
self.node_choice_widget.update_view()
self.node_choice_proxy.setPos(dialog_pos)
self.node_choice_proxy.show()
self.node_choice_widget.refocus()
def hide_node_choice_widget(self):
self.node_choice_proxy.hide()
self.node_choice_widget.clearFocus()
self.auto_connection_gate = None
# PAN
def pan(self, new_pos):
self.horizontalScrollBar().setValue(
self.horizontalScrollBar().value() -
(new_pos.x() - self.pan_last_x))
self.verticalScrollBar().setValue(self.verticalScrollBar().value() -
(new_pos.y() - self.pan_last_y))
self.pan_last_x = new_pos.x()
self.pan_last_y = new_pos.y()
# ZOOM
def zoom_in(self, amount):
local_viewport_center = QPoint(self.viewport().width() / 2,
self.viewport().height() / 2)
self.zoom(local_viewport_center,
self.mapToScene(local_viewport_center), amount)
def zoom_out(self, amount):
local_viewport_center = QPoint(self.viewport().width() / 2,
self.viewport().height() / 2)
self.zoom(local_viewport_center,
self.mapToScene(local_viewport_center), -amount)
def zoom(self, p_abs, p_mapped, angle):
by = 0
velocity = 2 * (1 / self.current_scale) + 0.5
if velocity > 3:
velocity = 3
direction = ''
if angle > 0:
by = 1 + (angle / 360 * 0.1 * velocity)
direction = 'in'
elif angle < 0:
by = 1 - (-angle / 360 * 0.1 * velocity)
direction = 'out'
else:
by = 1
scene_rect_width = self.mapFromScene(
self.sceneRect()).boundingRect().width()
scene_rect_height = self.mapFromScene(
self.sceneRect()).boundingRect().height()
if direction == 'in':
if self.current_scale * by < 3:
self.scale(by, by)
self.current_scale *= by
elif direction == 'out':
if scene_rect_width * by >= self.viewport().size().width(
) and scene_rect_height * by >= self.viewport().size().height():
self.scale(by, by)
self.current_scale *= by
w = self.viewport().width()
h = self.viewport().height()
wf = self.mapToScene(QPoint(w - 1, 0)).x() - self.mapToScene(
QPoint(0, 0)).x()
hf = self.mapToScene(QPoint(0, h - 1)).y() - self.mapToScene(
QPoint(0, 0)).y()
lf = p_mapped.x() - p_abs.x() * wf / w
tf = p_mapped.y() - p_abs.y() * hf / h
self.ensureVisible(lf, tf, wf, hf, 0, 0)
target_rect = QRectF(QPointF(lf, tf), QSizeF(wf, hf))
self.total_scale_div = target_rect.width() / self.viewport().width()
self.ensureVisible(target_rect, 0, 0)
# NODE PLACING: -----
def create_node_instance(self, node, config):
return self.get_node_instance_class_from_node(node)(node, self, config)
def add_node_instance(self, ni, pos=None):
self.scene().addItem(ni)
ni.enable_personal_logs()
if pos:
ni.setPos(pos)
# select new NI
self.scene().clearSelection()
ni.setSelected(True)
self.all_node_instances.append(ni)
def add_node_instances(self, node_instances):
for ni in node_instances:
self.add_node_instance(ni)
def remove_node_instance(self, ni):
ni.about_to_remove_from_scene() # to stop running threads
self.scene().removeItem(ni)
self.all_node_instances.remove(ni)
def place_new_node_by_shortcut(self): # Shift+P
point_in_viewport = None
selected_NIs = self.selected_node_instances()
if len(selected_NIs) > 0:
x = selected_NIs[-1].pos().x() + 150
y = selected_NIs[-1].pos().y()
self.node_place_pos = QPointF(x, y)
point_in_viewport = self.mapFromScene(QPoint(x, y))
else: # place in center
viewport_x = self.viewport().width() / 2
viewport_y = self.viewport().height() / 2
point_in_viewport = QPointF(viewport_x, viewport_y).toPoint()
self.node_place_pos = self.mapToScene(point_in_viewport)
self.node_choice_widget.reset_list()
self.show_node_choice_widget(point_in_viewport)
def place_nodes_from_config(self,
nodes_config,
offset_pos: QPoint = QPoint(0, 0)):
new_node_instances = []
for n_c in nodes_config:
# find parent node by title, type, package name and description as identifiers
parent_node_title = n_c['parent node title']
parent_node_package_name = n_c['parent node package']
parent_node = None
for pn in self.all_nodes:
pn: Node = pn
if pn.title == parent_node_title and \
pn.package == parent_node_package_name:
parent_node = pn
break
new_NI = self.create_node_instance(parent_node, n_c)
self.add_node_instance(
new_NI,
QPoint(n_c['position x'], n_c['position y']) + offset_pos)
new_node_instances.append(new_NI)
return new_node_instances
def place_node__cmd(self, node: Node, config=None):
new_NI = self.create_node_instance(node, config)
place_command = PlaceNodeInstanceInScene_Command(
self, new_NI, self.node_place_pos)
self.undo_stack.push(place_command)
if self.auto_connection_gate:
self.try_conn_gate_and_ni(self.auto_connection_gate,
place_command.node_instance)
return place_command.node_instance
def remove_node_instance_triggered(
self, node_instance): # called from context menu of NodeInstance
if node_instance in self.selected_node_instances():
self.undo_stack.push(
RemoveComponents_Command(self,
self.scene().selectedItems()))
else:
self.undo_stack.push(
RemoveComponents_Command(self, [node_instance]))
def get_node_instance_class_from_node(self, node):
return self.all_node_instance_classes[node]
def get_custom_input_widget_classes(self):
return self.parent_script.main_window.custom_node_input_widget_classes
def connect_nodes_from_config(self, node_instances, connections_config):
for c in connections_config:
c_parent_node_instance_index = c['parent node instance index']
c_output_port_index = c['output port index']
c_connected_node_instance = c['connected node instance']
c_connected_input_port_index = c['connected input port index']
if c_connected_node_instance is not None: # which can be the case when pasting
parent_node_instance = node_instances[
c_parent_node_instance_index]
connected_node_instance = node_instances[
c_connected_node_instance]
self.connect_gates(
parent_node_instance.outputs[c_output_port_index].gate,
connected_node_instance.
inputs[c_connected_input_port_index].gate)
# DRAWINGS
def create_drawing(self, config=None):
new_drawing = DrawingObject(self, config)
return new_drawing
def add_drawing(self, drawing_obj, pos=None):
self.scene().addItem(drawing_obj)
if pos:
drawing_obj.setPos(pos)
self.drawings.append(drawing_obj)
def add_drawings(self, drawings):
for d in drawings:
self.add_drawing(d)
def remove_drawing(self, drawing):
self.scene().removeItem(drawing)
self.drawings.remove(drawing)
def place_drawings_from_config(self, drawings, offset_pos=QPoint(0, 0)):
"""
:param offset_pos: position difference between the center of all selected items when they were copied/cut and
the current mouse pos which is supposed to be the new center
:param drawings: the drawing objects
"""
new_drawings = []
for d_config in drawings:
x = d_config['pos x'] + offset_pos.x()
y = d_config['pos y'] + offset_pos.y()
new_drawing = self.create_drawing(config=d_config)
self.add_drawing(new_drawing, QPointF(x, y))
new_drawings.append(new_drawing)
return new_drawings
def create_and_place_drawing__cmd(self, pos, config=None):
new_drawing_obj = self.create_drawing(config)
place_command = PlaceDrawingObject_Command(self, pos, new_drawing_obj)
self.undo_stack.push(place_command)
return new_drawing_obj
def move_selected_copmonents__cmd(self, x, y):
new_rel_pos = QPointF(x, y)
# if one node item would leave the scene (f.ex. pos.x < 0), stop
left = False
for i in self.scene().selectedItems():
new_pos = i.pos() + new_rel_pos
if new_pos.x() - i.width / 2 < 0 or \
new_pos.x() + i.width / 2 > self.scene().width() or \
new_pos.y() - i.height / 2 < 0 or \
new_pos.y() + i.height / 2 > self.scene().height():
left = True
break
if not left:
# moving the items
items_group = self.scene().createItemGroup(
self.scene().selectedItems())
items_group.moveBy(new_rel_pos.x(), new_rel_pos.y())
self.scene().destroyItemGroup(items_group)
# saving the command
self.undo_stack.push(
MoveComponents_Command(self,
self.scene().selectedItems(),
p_from=-new_rel_pos,
p_to=QPointF(0, 0)))
self.viewport().repaint()
def move_selected_nodes_left(self):
self.move_selected_copmonents__cmd(-40, 0)
def move_selected_nodes_up(self):
self.move_selected_copmonents__cmd(0, -40)
def move_selected_nodes_right(self):
self.move_selected_copmonents__cmd(+40, 0)
def move_selected_nodes_down(self):
self.move_selected_copmonents__cmd(0, +40)
def selected_components_moved(self, pos_diff):
items_list = self.scene().selectedItems()
self.undo_stack.push(
MoveComponents_Command(self,
items_list,
p_from=-pos_diff,
p_to=QPointF(0, 0)))
def selected_node_instances(self):
selected_NIs = []
for i in self.scene().selectedItems():
if find_type_in_object(i, NodeInstance):
selected_NIs.append(i)
return selected_NIs
def selected_drawings(self):
selected_drawings = []
for i in self.scene().selectedItems():
if find_type_in_object(i, DrawingObject):
selected_drawings.append(i)
return selected_drawings
def select_all(self):
for i in self.scene().items():
if i.ItemIsSelectable:
i.setSelected(True)
self.viewport().repaint()
def select_components(self, comps):
self.scene().clearSelection()
for c in comps:
c.setSelected(True)
def copy(self): # ctrl+c
data = {
'nodes':
self.get_node_instances_json_data(self.selected_node_instances()),
'connections':
self.get_connections_json_data(self.selected_node_instances()),
'drawings':
self.get_drawings_json_data(self.selected_drawings())
}
QGuiApplication.clipboard().setText(json.dumps(data))
def cut(self): # called from shortcut ctrl+x
data = {
'nodes':
self.get_node_instances_json_data(self.selected_node_instances()),
'connections':
self.get_connections_json_data(self.selected_node_instances()),
'drawings':
self.get_drawings_json_data(self.selected_drawings())
}
QGuiApplication.clipboard().setText(json.dumps(data))
self.remove_selected_components()
def paste(self):
data = {}
try:
data = json.loads(QGuiApplication.clipboard().text())
except Exception as e:
return
self.clear_selection()
# calculate offset
positions = []
for d in data['drawings']:
positions.append({'x': d['pos x'], 'y': d['pos y']})
for n in data['nodes']:
positions.append({'x': n['position x'], 'y': n['position y']})
offset_for_middle_pos = QPointF(0, 0)
if len(positions) > 0:
rect = QRectF(positions[0]['x'], positions[0]['y'], 0, 0)
for p in positions:
x = p['x']
y = p['y']
if x < rect.left():
rect.setLeft(x)
if x > rect.right():
rect.setRight(x)
if y < rect.top():
rect.setTop(y)
if y > rect.bottom():
rect.setBottom(y)
offset_for_middle_pos = self.last_mouse_move_pos - rect.center()
self.undo_stack.push(Paste_Command(self, data, offset_for_middle_pos))
def add_component(self, e):
if find_type_in_object(e, NodeInstance):
self.add_node_instance(e)
elif find_type_in_object(e, DrawingObject):
self.add_drawing(e)
def remove_component(self, e):
if find_type_in_object(e, NodeInstance):
self.remove_node_instance(e)
elif find_type_in_object(e, DrawingObject):
self.remove_drawing(e)
def remove_selected_components(self):
self.undo_stack.push(
RemoveComponents_Command(self,
self.scene().selectedItems()))
self.viewport().update()
# NODE SELECTION: ----
def clear_selection(self):
self.scene().clearSelection()
# CONNECTIONS: ----
def connect_gates__cmd(self, parent_gate: PortInstanceGate,
child_gate: PortInstanceGate):
self.undo_stack.push(
ConnectGates_Command(self,
parent_port=parent_gate.parent_port_instance,
child_port=child_gate.parent_port_instance))
def connect_gates(self, parent_gate: PortInstanceGate,
child_gate: PortInstanceGate):
parent_port_instance: PortInstance = parent_gate.parent_port_instance
child_port_instance: PortInstance = child_gate.parent_port_instance
# if they, their directions and their parent node instances are not equal and if their types are equal
if parent_port_instance.direction != child_port_instance.direction and \
parent_port_instance.parent_node_instance != child_port_instance.parent_node_instance and \
parent_port_instance.type_ == child_port_instance.type_:
try: # remove connection if port instances are already connected
index = parent_port_instance.connected_port_instances.index(
child_port_instance)
parent_port_instance.connected_port_instances.remove(
child_port_instance)
parent_port_instance.disconnected()
child_port_instance.connected_port_instances.remove(
parent_port_instance)
child_port_instance.disconnected()
except ValueError: # connect port instances
# remove all connections from parent port instance if it's a data input
if parent_port_instance.direction == 'input' and parent_port_instance.type_ == 'data':
for cpi in parent_port_instance.connected_port_instances:
self.connect_gates__cmd(
parent_gate,
cpi.gate) # actually disconnects the gates
# remove all connections from child port instance it it's a data input
if child_port_instance.direction == 'input' and child_port_instance.type_ == 'data':
for cpi in child_port_instance.connected_port_instances:
self.connect_gates__cmd(
child_gate,
cpi.gate) # actually disconnects the gates
parent_port_instance.connected_port_instances.append(
child_port_instance)
child_port_instance.connected_port_instances.append(
parent_port_instance)
parent_port_instance.connected()
child_port_instance.connected()
self.viewport().repaint()
def try_conn_gate_and_ni(self, parent_gate: PortInstanceGate,
child_ni: NodeInstance):
parent_port_instance: PortInstance = parent_gate.parent_port_instance
if parent_port_instance.direction == 'output':
for inp in child_ni.inputs:
if parent_port_instance.type_ == inp.type_:
self.connect_gates__cmd(parent_gate, inp.gate)
return
elif parent_port_instance.direction == 'input':
for out in child_ni.outputs:
if parent_port_instance.type_ == out.type_:
self.connect_gates__cmd(parent_gate, out.gate)
return
@staticmethod
def connection_path(p1: QPointF, p2: QPointF):
"""Returns the nice looking QPainterPath of a connection for two given points."""
path = QPainterPath()
path.moveTo(p1)
distance_x = abs(p1.x()) - abs(p2.x())
distance_y = abs(p1.y()) - abs(p2.y())
if ((p1.x() < p2.x() - 30)
or math.sqrt((distance_x**2) +
(distance_y**2)) < 100) and (p1.x() < p2.x()):
path.cubicTo(p1.x() + ((p2.x() - p1.x()) / 2), p1.y(),
p1.x() + ((p2.x() - p1.x()) / 2), p2.y(), p2.x(),
p2.y())
elif p2.x() < p1.x() - 100 and abs(distance_x) / 2 > abs(distance_y):
path.cubicTo(p1.x() + 100 + (p1.x() - p2.x()) / 10, p1.y(),
p1.x() + 100 + (p1.x() - p2.x()) / 10,
p1.y() - (distance_y / 2),
p1.x() - (distance_x / 2),
p1.y() - (distance_y / 2))
path.cubicTo(p2.x() - 100 - (p1.x() - p2.x()) / 10,
p2.y() + (distance_y / 2),
p2.x() - 100 - (p1.x() - p2.x()) / 10, p2.y(), p2.x(),
p2.y())
else:
path.cubicTo(p1.x() + 100 + (p1.x() - p2.x()) / 3, p1.y(),
p2.x() - 100 - (p1.x() - p2.x()) / 3, p2.y(), p2.x(),
p2.y())
return path
# GET JSON DATA
def get_json_data(self):
flow_dict = {
'algorithm mode':
'data flow' if self.algorithm_mode.mode_data_flow else 'exec flow',
'viewport update mode':
'sync' if self.viewport_update_mode.sync else 'async',
'nodes':
self.get_node_instances_json_data(self.all_node_instances),
'connections':
self.get_connections_json_data(self.all_node_instances),
'drawings':
self.get_drawings_json_data(self.drawings)
}
return flow_dict
def get_node_instances_json_data(self, node_instances):
script_node_instances_list = []
for ni in node_instances:
node_instance_dict = ni.get_json_data()
script_node_instances_list.append(node_instance_dict)
return script_node_instances_list
def get_connections_json_data(self,
node_instances,
only_with_connections_to=None):
script_ni_connections_list = []
for ni in node_instances:
for out in ni.outputs:
if len(out.connected_port_instances) > 0:
for connected_port in out.connected_port_instances:
# this only applies when saving config data through deleting node instances:
if only_with_connections_to is not None and \
connected_port.parent_node_instance not in only_with_connections_to and \
ni not in only_with_connections_to:
continue
# because I am not allowed to save connections between nodes connected to each other and both
# connected to the deleted node, only the connections to the deleted node shall be saved
connection_dict = {
'parent node instance index':
node_instances.index(ni),
'output port index': ni.outputs.index(out)
}
# yes, very important: when copying components, there might be connections going outside the
# selected lists, these should be ignored. When saving a project, all components are considered,
# so then the index values will never be none
connected_ni_index = node_instances.index(connected_port.parent_node_instance) if \
node_instances.__contains__(connected_port.parent_node_instance) else \
None
connection_dict[
'connected node instance'] = connected_ni_index
connected_ip_index = connected_port.parent_node_instance.inputs.index(connected_port) if \
connected_ni_index is not None else None
connection_dict[
'connected input port index'] = connected_ip_index
script_ni_connections_list.append(connection_dict)
return script_ni_connections_list
def get_drawings_json_data(self, drawings):
drawings_list = []
for drawing in drawings:
drawing_dict = drawing.get_json_data()
drawings_list.append(drawing_dict)
return drawings_list
class Scene(QGraphicsScene):
def __init__(self, parent=None, view=None):
QGraphicsScene.__init__(self, parent)
self.undoStack = QUndoStack(self)
# super(Scene, self).__init__(parent)
self.view = view
self.imgPosibleConnectH = QGraphicsPixmapItem(
os.path.join(PATHBLOCKSIMG, "ConnectH.png"))
super(Scene, self).addItem(self.imgPosibleConnectH)
self.imgPosibleConnectH.setVisible(False)
self.imgPosibleConnectV = QGraphicsPixmapItem(
os.path.join(PATHBLOCKSIMG, "ConnectV.png"))
super(Scene, self).addItem(self.imgPosibleConnectV)
self.imgPosibleConnectV.setVisible(False)
self.oldPos = None
self.createActions()
def createActions(self):
self.popMenu = QMenu()
self.undoAction = self.undoStack.createUndoAction(
self, self.tr("&Undo"))
self.undoAction.setShortcuts(QKeySequence.Undo)
self.popMenu.addAction(self.undoAction)
self.redoAction = self.undoStack.createRedoAction(
self, self.tr("&Redo"))
self.redoAction.setShortcuts(QKeySequence.Redo)
self.popMenu.addAction(self.redoAction)
self.disableAction = QAction(self.tr("&Disable"), self)
self.disableAction.triggered.connect(self.setEnabledMain)
self.popMenu.addAction(self.disableAction)
def setEnabledMain(self):
for item in self.items():
if isinstance(item, QGraphicsBlockItem) and item.isBlockDef():
if item.functionname == "main":
item.setEnabled(not item.isEnabled())
elif item.functionname == "when":
item.setEnabled(not item.isEnabled())
def addItem(self, item: QGraphicsItem, fromStack=False):
if fromStack:
super(Scene, self).addItem(item)
else:
self.undoStack.push(AddCommand(item, self))
def mousePressEvent(self, event: QGraphicsSceneMouseEvent):
movingItem = self.itemAt(event.scenePos(), self.view.transform())
if movingItem is None and event.button() is Qt.MouseButton.RightButton:
self.popMenu.exec_(event.screenPos())
if movingItem is not None and event.button(
) is Qt.MouseButton.LeftButton:
self.oldPos = movingItem.pos()
self.clearSelection()
super(Scene, self).mousePressEvent(event)
def mouseReleaseEvent(self, event: QGraphicsSceneMouseEvent):
if len(self.selectedItems()) is not 0:
movingItem = self.selectedItems()[0]
else:
movingItem = None
if movingItem is not None and event.button(
) is Qt.MouseButton.LeftButton:
if self.oldPos is not movingItem.pos():
self.undoStack.push(MoveCommand(movingItem, self.oldPos, self))
super(Scene, self).mouseReleaseEvent(event)
def getListInstructions(self):
list = []
for item in self.items():
if isinstance(item, QGraphicsBlockItem) and item.isBlockDef(
) and item.isEnabled():
inst = item.getInstructions()
list.append(inst)
return list
