def dropEvent(self, e):
"""Accept drop events."""
model = QStandardItemModel()
model.dropMimeData(
e.mimeData(), Qt.CopyAction, 0, 0, QModelIndex())
name = model.item(0).text()
item = None
if name in ['And', 'Or', 'Nand', 'Nor', 'Not', 'Xor', 'Xnor']:
item = CircuitItem(
getattr(engine.gates, name + 'Gate')(None, self.mainCircuit))
elif name == 'RSFlipFlop':
item = CircuitItem(RSFlipFlop(None, self.mainCircuit))
elif name == 'JKFlipFlop':
item = CircuitItem(JKFlipFlop(None, self.mainCircuit))
elif name == self.str_I:
item = PlugItem(Plug(True, None, self.mainCircuit))
elif name == self.str_O:
item = PlugItem(Plug(False, None, self.mainCircuit))
elif name == self.str_Clock:
if not self.clockPlug:
self.clockPlug = Clock(self.mainCircuit)
self.clockPlug.clkThread.set_extern(self.clockUpdate)
item = PlugItem(self.clockPlug)
else:
self.write(self.str_onlyOneClock)
elif model.item(0, 1).text() == 'user':
c = Circuit(None, self.mainCircuit)
f = open(filePath('user/') + name + '.crc', 'rb')
children = pickle.load(f)
f.close()
for child in children:
if isinstance(child[0], Plug):
child[0].owner = c
if child[0].isInput:
c.inputList.append(child[0])
else:
c.outputList.append(child[0])
elif isinstance(child[0], Circuit):
child[0].owner = c
c.circuitList.append(child[0])
c.category = name
item = CircuitItem(c)
if item:
# Fixes the default behaviour of centering the first
# item added to scene.
if not len(self.scene().items()):
self.scene().setSceneRect(0, 0, 1, 1)
else:
self.scene().setSceneRect(0, 0, 0, 0)
self.scene().addItem(item)
item.setupPaint()
item.setPos(
closestGridPoint(item.mapFromScene(self.mapToScene(e.pos()))))
for i in self.scene().selectedItems():
i.setSelected(False)
item.setSelected(True)
self.timer.start()
def __init__(self, parent):
super(MainView, self).__init__(parent)
self.setAcceptDrops(True) # Accept dragged items.
self.setMouseTracking(True) # Allow mouseover effects.
self.setDragMode(QGraphicsView.RubberBandDrag) # rubber select
self.setScene(QGraphicsScene(parent))
self.isDrawing = False # user currently not drawing
self.mainCircuit = Circuit("Main", None)
self.timer = QTimer()
"""A timer for forcing redraws."""
self.timer.setInterval(200)
self.timer.setSingleShot(True)
self.timer.timeout.connect(self.setItemsInGrid)
self.copyBuffer = None
"""A buffer for ctrl-c, ctrl-v copy operations."""
self.clockPlug = None
class MainView(QGraphicsView):
"""Graphic representation of a user created circuit schematic."""
def __init__(self, parent):
super(MainView, self).__init__(parent)
self.setAcceptDrops(True) # Accept dragged items.
self.setMouseTracking(True) # Allow mouseover effects.
self.setDragMode(QGraphicsView.RubberBandDrag) # rubber select
self.setScene(QGraphicsScene(parent))
self.isDrawing = False # user currently not drawing
self.mainCircuit = Circuit("Main", None)
self.timer = QTimer()
"""A timer for forcing redraws."""
self.timer.setInterval(200)
self.timer.setSingleShot(True)
self.timer.timeout.connect(self.setItemsInGrid)
self.copyBuffer = None
"""A buffer for ctrl-c, ctrl-v copy operations."""
self.clockPlug = None
def batchRename(self):
"""Experimental function to rename multiple items at once."""
sel = self.scene().selectedItems()
if (
not all([isinstance(i, sel[0].__class__) for i in sel])
or (isinstance(sel[0].data, Plug)
and not all([
i.data.isInput == sel[0].data.isInput for i in sel]))):
print("Error")
return
ret = QInputDialog.getText(self, "Set prefix", "Prefix :")
if ret[1] and len(ret[0]):
for i in self.scene().selectedItems():
i.data.generate_name(None, ret[0])
i.setupPaint()
self.parent().optionsDock.widget().updateOptions()
def clearCircuit(self):
"""Clears every item from the circuit designer."""
for i in self.scene().items():
# https://bugreports.qt-project.org/browse/PYSIDE-252
if not isinstance(i, QGraphicsSimpleTextItem):
self.scene().removeItem(i)
if self.bgClockThread:
self.bgClockThread.stop()
self.mainCircuit.clear()
def clockUpdate(self):
"""Updates the view at each clock tick."""
for item in self.scene().items():
if isinstance(item, PlugItem) or isinstance(item, WireItem):
item.setupPaint()
def closeEvent(self, e):
"""Overload in order to kill the clock thread."""
if self.bgClockThread is not None:
self.bgClockThread.exit()
def contextMenuEvent(self, e):
"""Pops a contextual menu up on right-clicks"""
item = self.itemAt(e.pos())
if item:
menu = QMenu(self)
if isinstance(item, CircuitItem):
pos = item.mapFromScene(self.mapToScene(e.pos()))
plug = item.handleAtPos(pos)
item = plug if plug else item
menu.addAction(self.str_setName, lambda: self.getNewName(item))
elif isinstance(item, PlugItem):
if isinstance(item.data, Clock):
thread = item.data.clkThread
if thread.paused:
menu.addAction(
self.str_startClock, lambda: thread.unpause())
else:
menu.addAction(
self.str_pauseClock, lambda: thread.pause())
menu.addAction(self.str_setName, lambda: self.getNewName(item))
if item.data.isInput:
menu.addAction(
str(item.data.value), item.setAndUpdate)
elif isinstance(item, WireItem):
pos = item.mapFromScene(self.mapToScene(e.pos()))
if item.handleAtPos(pos):
menu.addAction(
self.str_removeLast, lambda: item.removeLast())
menu.popup(e.globalPos())
def dragEnterEvent(self, e):
"""Accept drag events coming from ToolBox."""
if isinstance(e.source(), ToolBox):
e.accept()
else: # Refuse all other drags.
e.ignore()
def dragLeaveEvent(self, e):
"""Fixes bug: items are half dragged over self, then away. (#16)"""
e.ignore()
def dragMoveEvent(self, e):
"""Accept drag move events."""
e.accept()
def dropEvent(self, e):
"""Accept drop events."""
model = QStandardItemModel()
model.dropMimeData(
e.mimeData(), Qt.CopyAction, 0, 0, QModelIndex())
name = model.item(0).text()
item = None
if name in ['And', 'Or', 'Nand', 'Nor', 'Not', 'Xor', 'Xnor']:
item = CircuitItem(
getattr(engine.gates, name + 'Gate')(None, self.mainCircuit))
elif name == 'RSFlipFlop':
item = CircuitItem(RSFlipFlop(None, self.mainCircuit))
elif name == 'JKFlipFlop':
item = CircuitItem(JKFlipFlop(None, self.mainCircuit))
elif name == self.str_I:
item = PlugItem(Plug(True, None, self.mainCircuit))
elif name == self.str_O:
item = PlugItem(Plug(False, None, self.mainCircuit))
elif name == self.str_Clock:
if not self.clockPlug:
self.clockPlug = Clock(self.mainCircuit)
self.clockPlug.clkThread.set_extern(self.clockUpdate)
item = PlugItem(self.clockPlug)
else:
self.write(self.str_onlyOneClock)
elif model.item(0, 1).text() == 'user':
c = Circuit(None, self.mainCircuit)
f = open(filePath('user/') + name + '.crc', 'rb')
children = pickle.load(f)
f.close()
for child in children:
if isinstance(child[0], Plug):
child[0].owner = c
if child[0].isInput:
c.inputList.append(child[0])
else:
c.outputList.append(child[0])
elif isinstance(child[0], Circuit):
child[0].owner = c
c.circuitList.append(child[0])
c.category = name
item = CircuitItem(c)
if item:
# Fixes the default behaviour of centering the first
# item added to scene.
if not len(self.scene().items()):
self.scene().setSceneRect(0, 0, 1, 1)
else:
self.scene().setSceneRect(0, 0, 0, 0)
self.scene().addItem(item)
item.setupPaint()
item.setPos(
closestGridPoint(item.mapFromScene(self.mapToScene(e.pos()))))
for i in self.scene().selectedItems():
i.setSelected(False)
item.setSelected(True)
self.timer.start()
def fillIO(self):
"""Experimental function to add as many global I/Os as still needed
by the main circuit.
"""
for item in self.scene().items():
if isinstance(item, CircuitItem):
pos = item.pos()
rot = item.rotation()
circuit = item.data
off = 0
for input in circuit.inputList:
if not input.sourcePlug:
i = PlugItem(Plug(True, None, self.mainCircuit))
self.scene().addItem(i)
x = (
(pos.x() if not rot % 180 else pos.y())
- 4 * GRIDSIZE * (1 if not rot % 360 else -1))
y = (pos.y() if not rot % 180 else pos.x()) + off
i.setPos(x, y)
i.setRotation(rot)
off += 2 * GRIDSIZE
off = 0
for output in circuit.outputList:
if not len(output.destinationPlugs):
i = PlugItem(Plug(False, None, self.mainCircuit))
self.scene().addItem(i)
i.setPos(pos.x() + 100, pos.y() + off)
off += 30
def getNewName(self, item):
"""Shows a dialog, and sets item name to user input."""
# ret = tuple string, bool
ret = QInputDialog.getText(self, self.str_setName, self.str_name)
if ret[1] and item.data.setName(ret[0]): # Not canceled.
item.update()
self.parent().optionsDock.widget().updateOptions()
def keyPressEvent(self, e):
"""Manages keyboard events."""
scene = self.scene()
selection = scene.selectedItems()
# ESC, unselect all items
if e.key() == Qt.Key_Escape:
for item in selection:
item.setSelected(False)
# Del, suppression
elif e.key() == Qt.Key_Delete:
for item in selection:
if isinstance(item, CircuitItem):
self.mainCircuit.remove(item.data)
elif isinstance(item, Plug):
self.mainCircuit.remove(item.data)
elif (
isinstance(item, WireItem)
and item.data['endIO'] is not None):
item.data['startIO'].disconnect(item.data['endIO'])
scene.removeItem(item)
# <- ->, item rotation.
elif e.key() == Qt.Key_Left or e.key() == Qt.Key_Right:
self.rotateItems(90 if e.key() == Qt.Key_Right else -90)
# L, left align and even spacing
elif e.key() == Qt.Key_L:
left = min([item.scenePos().x() for item in selection])
sel = sorted(selection, key=lambda i: i.scenePos().y())
sel[0].setPos(left, sel[0].scenePos().y())
for i in range(1, len(sel)):
sel[i].setPos(
left,
sel[i - 1].sceneBoundingRect().bottom() + 2 * GRIDSIZE)
# R, right align and even spacing
elif e.key() == Qt.Key_R:
right = max([item.scenePos().x() for item in selection])
sel = sorted(selection, key=lambda i: i.scenePos().y())
sel[0].setPos(right, sel[0].scenePos().y())
for i in range(1, len(sel)):
sel[i].setPos(
right,
sel[i - 1].sceneBoundingRect().bottom() + 2 * GRIDSIZE)
# T, top align and even spacing
elif e.key() == Qt.Key_T:
top = min([item.scenePos().y() for item in selection])
sel = sorted(selection, key=lambda i: i.scenePos().x())
sel[0].setPos(sel[0].scenePos().x(), top)
for i in range(1, len(sel)):
sel[i].setPos(
sel[i - 1].sceneBoundingRect().right() + 2 * GRIDSIZE,
top)
# B, bottom align and even spacing
elif e.key() == Qt.Key_B:
bottom = max([item.scenePos().y() for item in selection])
sel = sorted(selection, key=lambda i: i.scenePos().x())
sel[0].setPos(sel[0].scenePos().x(), bottom)
# Ctrl-C, copy
elif e.key() == Qt.Key_C and e.nativeModifiers() == 4:
self.copyBuffer = copy(selection)
# Ctrl-V, paste
elif e.key() == Qt.Key_V and e.nativeModifiers() == 4:
memo = {}
for item in self.copyBuffer:
if isinstance(item, PlugItem):
dc = deepcopy(item.data, memo)
self.mainCircuit.add(dc)
dc.generate_name(None)
i = PlugItem(dc)
elif isinstance(item, CircuitItem):
dc = deepcopy(item.data, memo)
self.mainCircuit.add(dc)
dc.generate_name()
i = CircuitItem(dc)
elif isinstance(item, WireItem):
dc = deepcopy(item.data, memo)
i = WireItem(dc['startIO'], dc['points'], dc['endIO'])
self.scene().addItem(i)
# TODO : +100 et pourquoi 100 et pas pi ou 5000?
i.setPos(item.pos().x() + 100, item.pos().y() + 100)
i.setRotation(item.rotation())
i.setupPaint()
for item in selection:
item.setupPaint()
def mouseMoveEvent(self, e):
"""Redraw CurrentWire; change cursor on mouseOver handles."""
if self.isDrawing:
self.currentWire.moveLastPoint(
self.currentWire.mapFromScene(self.mapToScene(e.pos())))
item = self.itemAt(e.pos())
if item:
pos = item.mapFromScene(self.mapToScene(e.pos()))
isCircuit = isinstance(item, CircuitItem)
if isCircuit or isinstance(item, PlugItem):
handle = item.handleAtPos(pos)
if handle:
if isCircuit:
item.setToolTip(handle.name)
self.setCursor(Qt.CursorShape.UpArrowCursor)
return
elif isCircuit:
item.setToolTip(item.data.name)
elif (isinstance(item, WireItem) and item.handleAtPos(pos) and
not self.isDrawing):
self.setCursor(Qt.CursorShape.UpArrowCursor)
return
self.setCursor(Qt.CursorShape.ArrowCursor)
super(MainView, self).mouseMoveEvent(e)
def mousePressEvent(self, e):
"""Start Wire creation/extension."""
# Reserve right-clicks for contextual menus.
if e.buttons() == Qt.RightButton:
super(MainView, self).mousePressEvent(e)
return
self.mouseEventStart = None
item = self.itemAt(e.pos())
if item:
pos = item.mapFromScene(self.mapToScene(e.pos()))
if isinstance(item, CircuitItem) or isinstance(item, PlugItem):
plug = item.handleAtPos(pos)
if plug:
self.isDrawing = True
p = closestGridPoint(self.mapToScene(e.pos()))
self.currentWire = WireItem(plug, [p, p])
self.scene().addItem(self.currentWire)
return # no super(), prevents dragging/selecting
elif (
isinstance(item, PlugItem) and item.data.isInput
and e.modifiers() & Qt.AltModifier):
item.setAndUpdate()
return
elif isinstance(item, WireItem):
if item.handleAtPos(pos):
self.currentWire = item
self.isDrawing = True
return # no super(), prevents dragging/selecting
# Didn't click a handle? We wanted to drag or select
super(MainView, self).mousePressEvent(e)
def mouseReleaseEvent(self, e):
"""Complete Wire segments. Connect Plugs."""
# Ignore right-clicks.
if e.buttons() == Qt.RightButton:
super(MainView, self).mousePressEvent(e)
return
if self.isDrawing:
self.currentWire.addPoint()
self.isDrawing = False
old = self.currentWire.zValue()
self.currentWire.setZValue(-500000) # to detect other wires
item = self.itemAt(e.pos())
self.currentWire.setZValue(old)
if item:
pos = item.mapFromScene(self.mapToScene(e.pos()))
if isinstance(item, CircuitItem) or isinstance(item, PlugItem):
plug = item.handleAtPos(pos)
if (plug and
self.currentWire.handleAtPos(
self.currentWire.mapFromScene(
self.mapToScene(e.pos())))):
if not self.currentWire.connect(plug):
self.currentWire.revert()
return
elif (
isinstance(item, WireItem)
and item != self.currentWire and not item.complete):
if not self.currentWire.connect(item.data['startIO']):
self.currentWire.revert()
else:
p = self.currentWire.data['points'][-1]
points = item.data['points']
for i in range(len(points)):
a = points[i]
b = points[i + 1]
if (
distance(a, p) + distance(p, b)
== distance(a, b)):
points = points[0:i + 1]
points.reverse()
break
self.currentWire.data['points'].extend(
points)
self.scene().removeItem(item)
self.currentWire.setupPaint()
return
elif isinstance(item, WireItem) and item.complete:
p = item.data['startIO']
p1 = item.data['endIO']
source = p if p1.sourcePlug == p else p1
if not self.currentWire.connect(source):
self.currentWire.revert()
#~ else: # test code
#~ print(self.currentWire.data)
# Ugly hack to solve selection problems with multiple wireitems
# on the same spot : the smallest area is selected.
wires = sorted(
[i for i in self.scene().items() if isinstance(i, WireItem)],
key=
lambda i: i.boundingRect().width() * i.boundingRect().height())
for i in range(len(wires)):
wires[i].setZValue(-i - 1)
self.currentWire = None
super(MainView, self).mouseReleaseEvent(e)
def rotateItems(self, angle):
"""Rotates the current selection around its gravity center."""
grp = self.scene().createItemGroup(self.scene().selectedItems())
br = grp.sceneBoundingRect()
grp.setTransformOriginPoint(
br.left() + br.width() / 2, br.top() + br.height() / 2)
grp.setRotation(grp.rotation() + angle)
self.scene().destroyItemGroup(grp)
# The item group doesn't transfer its rotation to its children
# .setRotation() sets it correctly but rotates the item
# .rotate() rotates the item back without setting it
# rotate is deprecated, so this is far from ideal
for item in self.scene().selectedItems():
item.setRotation((item.rotation() + angle) % 360)
item.rotate(-angle)
def setItemsInGrid(self):
"""Correcting items pos to fit on the grid."""
for item in self.scene().items():
item.setPos(closestGridPoint(item.pos()))
def write(self, message):
"""Briefly display a log WARNING."""
scene = self.scene()
msg = scene.addText(message)
QTimer.singleShot(1500, lambda: scene.removeItem(msg))
