def mousePressEvent(self, event):
"""Handles mouse press event"""
button = event.button()
if button not in [Qt.LeftButton, Qt.RightButton]:
self.clearSelection()
event.accept()
return
if button == Qt.RightButton:
item = self.itemAt(event.scenePos(), QTransform())
logicalItem = self.__getLogicalItem(item)
if logicalItem is None:
# Not a selectable item or out of the items
self.clearSelection()
elif not logicalItem.isSelected():
self.clearSelection()
logicalItem.setSelected(True)
# Bring up a context menu
self.onContextMenu(event)
else:
# Here: this is LMB
self.__createRubberBand(event)
event.accept()
return
def mousePressEvent(self, event):
"""The default mouse behavior of the QT library is sometimes
inconsistent. For example, selecting of the items is done on
mousePressEvent however adding items is done on mouseReleaseEvent.
The second thing is that the QT library does not support
hierarchical relationships between the items.
The third thing is the selection proxy which is not supported either.
So the whole mouse[Press,Release]Event members are overridden
"""
item = self.itemAt(event.scenePos(), QTransform())
logicalItem = self.__getLogicalItem(item)
button = event.button()
if button not in [Qt.LeftButton, Qt.RightButton]:
self.clearSelection()
event.accept()
return
if button == Qt.RightButton:
if logicalItem is None:
# Not a selectable item or out of the items
self.clearSelection()
elif not logicalItem.isSelected():
self.clearSelection()
logicalItem.setSelected(True)
# Bring up a context menu
self.onContextMenu(event)
event.accept()
return
# Here: this is LMB
self.__createRubberBand(event)
if logicalItem is None:
self.clearSelection()
event.accept()
return
modifiers = event.modifiers()
if modifiers == Qt.NoModifier:
self.clearSelection()
logicalItem.setSelected(True)
event.accept()
return
if modifiers == Qt.ControlModifier:
if logicalItem.isSelected():
logicalItem.setSelected(False)
event.accept()
return
# Item is not selected and should be added or ignored
self.addToSelection(logicalItem)
event.accept()
return
# The alt modifier works for the whole app window on
# Ubuntu, so it cannot really be used...
if modifiers == Qt.ShiftModifier:
self.clearSelection()
# Here: add comments
if self.isOpenGroupItem(item):
self.addToSelection(item)
else:
for item in self.findItemsForRef(logicalItem.ref):
self.addToSelection(item)
event.accept()
return
event.accept()
def mouseReleaseEvent(self, event):
"""Handles the mouse release event"""
button = event.button()
if button not in [Qt.LeftButton, Qt.RightButton]:
event.accept()
return
if button == Qt.RightButton:
event.accept()
return
# Here: left mouse button
if self.__isRubberBandVisible():
# Detect intersections
self.clearSelection()
for item in self.items():
if not isinstance(item, CellElement):
continue
if item.isProxyItem():
continue
if item.scopedItem():
if item.subKind not in [
ScopeCellElement.DECLARATION,
ScopeCellElement.COMMENT,
ScopeCellElement.DOCSTRING
]:
continue
if item.subKind == ScopeCellElement.DECLARATION:
item = item.getTopLeftItem()
# The call must be done on item. (not on rubberBand.)
if item.collidesWithItem(self.rubberBand,
Qt.ContainsItemBoundingRect):
self.addToSelection(item)
else:
item = self.itemAt(event.scenePos(), QTransform())
logicalItem = self.__getLogicalItem(item)
if logicalItem is None:
self.clearSelection()
else:
modifiers = event.modifiers()
if modifiers == Qt.NoModifier:
if logicalItem.kind in [CellElement.INDEPENDENT_DOC,
CellElement.LEADING_DOC,
CellElement.ABOVE_DOC] and \
item.isProxyItem():
if logicalItem.cmlRef.link is None:
self.clearSelection()
logicalItem.setSelected(True)
else:
logicalItem.mouseClickLinkIcon()
else:
self.clearSelection()
logicalItem.setSelected(True)
elif modifiers == Qt.ControlModifier:
if logicalItem.isSelected():
logicalItem.setSelected(False)
else:
# Item is not selected and should be added or ignored
self.addToSelection(logicalItem)
# The alt modifier works for the whole app window on
# Ubuntu, so it cannot really be used...
elif modifiers == Qt.ShiftModifier:
self.clearSelection()
# Here: add comments
if self.isOpenGroupItem(item):
self.addToSelection(item)
else:
for itemForRef in self.findItemsForRef(
logicalItem.ref):
self.addToSelection(itemForRef)
self.__destroyRubberBand()
event.accept()