本文整理汇总了Python中PyQt4.QtGui.QGraphicsLineItem.collidingItems方法的典型用法代码示例。如果您正苦于以下问题：Python QGraphicsLineItem.collidingItems方法的具体用法？Python QGraphicsLineItem.collidingItems怎么用？Python QGraphicsLineItem.collidingItems使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PyQt4.QtGui.QGraphicsLineItem的用法示例。
在下文中一共展示了QGraphicsLineItem.collidingItems方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: EScene
# 需要导入模块: from PyQt4.QtGui import QGraphicsLineItem [as 别名]
# 或者: from PyQt4.QtGui.QGraphicsLineItem import collidingItems [as 别名]
class EScene(QGraphicsScene):
def __init__(self, view=None, parent=None):
QGraphicsScene.__init__(self, parent)
if view is None:
raise AttributeError
self.__view = view
self.__create__()
def __create__(self):
self.__gridSize = 35
self.__isGridActive = True
self.__isAltModifier = False
self.__isControlModifier = False
self.__isNodePressed = False
self.__kDummy = EDummy()
self.__kDummy.setGridSize(self.__gridSize)
self.__kDummy.onPress.connect(self.__onNodePressed)
self.__kDummy.onEditEnd.connect(self.__onDummyEdit)
self.addItem(self.__kDummy)
self.__kSelected = ESceneSelection()
self.addItem(self.__kSelected)
self.__kCutLine = QGraphicsLineItem()
self.__kCutLine.hide()
self.addItem(self.__kCutLine)
self.__nodes = {}
self.__connections = {}
self.__graphHandle = EGraphHandle()
self.__graphHandle.Message.connect(self.__messageFilter)
self.__propEditor = EPropertyEditor()
self.addItem(self.__propEditor)
def __isNode(self, EObject):
return isinstance(EObject, ENode)
def __isEdge(self, EObject):
return isinstance(EObject, EEdge)
def __onNodePressed(self):
if self.__isNode(self.sender()):
self.__graphHandle.process(self.sender().mapFromPoint(self.__kDummy.scenePos()))
return
if not self.__kDummy.isEditMode():
self.__graphHandle.process(self.__kDummy.Id)
def __onDummyEdit(self, line):
if self.__isNode(self.itemAt(line.p1())) and self.__isNode(self.itemAt(line.p2())):
return
self.__kCutLine.setLine(line)
result = []
for item in self.__kCutLine.collidingItems():
if isinstance(item, EEdge):
if self.__kCutLine.collidesWithPath(item.shape()):
result.append(item.Id)
self.__graphHandle.process(result)
def __getDataFromId(self, theId):
handle = self.__graphHandle.getHandleFromId(theId)
if handle:
return self.__nodes[handle].mapFromId(theId)
return None
def __messageFilter(self, message):
if message.match(EGraphHandle.kMessageEditBegin):
self.__kDummy.toggleEditMode()
return
if message.match(EGraphHandle.kMessageEditEnd):
if self.__kDummy.isEditMode():
self.__kDummy.toggleEditMode()
return
if message.match(EGraphHandle.kMessageNodeAdded):
self.addItem(ENode(message.getData()))
return
if message.match(EGraphHandle.kMessageNodeRemoved):
#.........这里部分代码省略.........