我们从Python开源项目中，提取了以下8个代码示例，用于说明如何使用PySide.QtGui.QGraphicsScene()。
def initUI(self): scene = QtGui.QGraphicsScene(self) scene = QtGui.QGraphicsScene(self) scene.setItemIndexMethod(QtGui.QGraphicsScene.NoIndex) scene.setSceneRect(-200, -200, 400, 400) self.setScene(scene) self.scene = scene self.setCacheMode(QtGui.QGraphicsView.CacheBackground) self.setRenderHint(QtGui.QPainter.Antialiasing) self.setTransformationAnchor(QtGui.QGraphicsView.AnchorUnderMouse) self.setResizeAnchor(QtGui.QGraphicsView.AnchorViewCenter) self.setDragMode(QtGui.QGraphicsView.ScrollHandDrag) self.setInteractive(True) self.NodeIds = [] self.centrality = [] self.Scene_to_be_updated = scene self.setCacheMode(QtGui.QGraphicsView.CacheBackground) i = 0 self.dendogramPos() self.setSceneRect(self.Scene_to_be_updated.itemsBoundingRect()) self.setScene(self.Scene_to_be_updated) self.fitInView(self.Scene_to_be_updated.itemsBoundingRect(),QtCore.Qt.KeepAspectRatio) self.scaleView(math.pow(2.5, -900/ 1040.0))
def __init__(self,parent): QtGui.QGraphicsView.__init__(self) self.parent = parent; self.setTransformationAnchor(QtGui.QGraphicsView.AnchorUnderMouse); self.setDragMode(QtGui.QGraphicsView.ScrollHandDrag); self.setViewportUpdateMode(QtGui.QGraphicsView.FullViewportUpdate); self.setRenderHints(0); self.scene = QtGui.QGraphicsScene(); self.setScene(self.scene) self.offset_x = 0; self.offset_y = 0; self.marker_set = False self.marker_is_visible = True self.is_flipped = False
def initUI(self): scene = QtGui.QGraphicsScene(self) scene.setItemIndexMethod(QtGui.QGraphicsScene.NoIndex) self.setScene(scene) self.NodeIds = [] self.centrality = [] self.Scene_to_be_updated = scene self.setCacheMode(QtGui.QGraphicsView.CacheBackground) self.setRenderHint(QtGui.QPainter.Antialiasing) self.setInteractive(True) self.setTransformationAnchor(QtGui.QGraphicsView.AnchorUnderMouse) self.setResizeAnchor(QtGui.QGraphicsView.AnchorViewCenter) self.setDragMode(QtGui.QGraphicsView.ScrollHandDrag) i = 0 self.communityPos = nx.nx_pydot.graphviz_layout(self.induced_graph,prog='fdp',args='-Gsep=.25,-GK=20-Eweight=2') # self.communityPos = nx.spring_layout(self.induced_graph,pos=self.Pos,weight='weight',scale=450) for node in self.induced_graph.nodes(): i = i + 1 node_value=Node(self.Graph,i,self.correlationTableObject,True) self.NodeIds.append(node_value) scene.addItem(node_value) x,y=self.communityPos[node] node_value.setPos(x,y) node_value.PutColor(self.clut[i-1]) k =0 for i,j in self.induced_graph.edges(): Weight = self.induced_graph[i][j]['weight'] Edge_Value = 1+(float(Weight-self.Min1)/(self.Max1 - self.Min1))*5 scene.addItem(Edge(self.Graph,self.NodeIds[i],self.NodeIds[j],k, i,j,self.Max,((self.Matrix[j,i]-self.Min1)/(self.Max1 - self.Min1))*5,True)) k = k + 1 self.setSceneRect(self.Scene_to_be_updated.itemsBoundingRect()) self.setScene(self.Scene_to_be_updated) self.fitInView(self.Scene_to_be_updated.itemsBoundingRect(),QtCore.Qt.KeepAspectRatio) self.scaleView(math.pow(2.5, -900 / 1040.0)) self.nodes = [item for item in scene.items() if isinstance(item, Node)] self.edges = [item for item in scene.items() if isinstance(item, Edge)]
def initUI(self): """ initialize all the components required """ self.presentNodeObjects = [] self.centrality = [] scene = QtGui.QGraphicsScene(self) scene.setItemIndexMethod(QtGui.QGraphicsScene.NoIndex) scene.setSceneRect(-200, -200, 400, 400) self.setScene(scene) self.scene = scene self.setCacheMode(QtGui.QGraphicsView.CacheBackground) self.setRenderHint(QtGui.QPainter.Antialiasing) self.setTransformationAnchor(QtGui.QGraphicsView.AnchorUnderMouse) self.setResizeAnchor(QtGui.QGraphicsView.AnchorViewCenter) self.setDragMode(QtGui.QGraphicsView.ScrollHandDrag) self.setInteractive(True) self.setTransformationAnchor(QtGui.QGraphicsView.AnchorUnderMouse) self.Scene_to_be_updated = scene self.setCacheMode(QtGui.QGraphicsView.CacheBackground) i = 0 self.setSceneRect(self.Scene_to_be_updated.itemsBoundingRect()) self.setScene(self.Scene_to_be_updated) self.fitInView(self.Scene_to_be_updated.itemsBoundingRect(),QtCore.Qt.KeepAspectRatio) self.scaleView(math.pow(2.0, -900/ 1040.0))
def additional_gui_setup(self): # Additional GUI setup self.graphicsView_banner.mouseDoubleClickEvent = MainWindow.banner_double_click self.setWindowTitle(__appname__) self.scene_banner = QtGui.QGraphicsScene() self.graphicsView_banner.setScene(self.scene_banner) self.scene_banner.addPixmap(QtGui.QPixmap(":images/banner.png")) self._path_message("", MainWindow.MSG_OK) self._avoid_message("", MainWindow.MSG_OK) self.lineEdit_source.setFocus() # Auto-completion system_list = self.nav.eve_db.system_name_list() for line_edit_field in [ self.lineEdit_source, self.lineEdit_destination, self.lineEdit_avoid_name, self.lineEdit_set_dest, ]: completer = QtGui.QCompleter(system_list, self) completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive) line_edit_field.setCompleter(completer) # Signals self.pushButton_eve_login.clicked.connect(self.btn_eve_login_clicked) self.pushButton_player_location.clicked.connect(self.btn_player_location_clicked) self.pushButton_find_path.clicked.connect(self.btn_find_path_clicked) self.pushButton_crest_config.clicked.connect(self.btn_crest_config_clicked) self.pushButton_trip_config.clicked.connect(self.btn_trip_config_clicked) self.pushButton_trip_get.clicked.connect(self.btn_trip_get_clicked) self.pushButton_avoid_add.clicked.connect(self.btn_avoid_add_clicked) self.pushButton_avoid_delete.clicked.connect(self.btn_avoid_delete_clicked) self.pushButton_avoid_clear.clicked.connect(self.btn_avoid_clear_clicked) self.pushButton_set_dest.clicked.connect(self.btn_set_dest_clicked) self.pushButton_reset.clicked.connect(self.btn_reset_clicked) self.lineEdit_source.returnPressed.connect(self.line_edit_source_return) self.lineEdit_destination.returnPressed.connect(self.line_edit_destination_return) self.lineEdit_avoid_name.returnPressed.connect(self.line_edit_avoid_name_return) self.lineEdit_set_dest.returnPressed.connect(self.btn_set_dest_clicked) self.tableWidget_path.itemSelectionChanged.connect(self.table_item_selection_changed)
def __init__(self): super(NodeView,self).__init__() self._scene = OPScene() # Obsolete self.nodeList = list() # Variables self.clickedItem = None self.itemMode = None # Define which item is selected self.mousePositionX = 0 self.mousePositionY = 0 self.mode = None # Configure QGraphics View self.setSceneRect(0, 0, -1, -1) self.setFocusPolicy(QtCore.Qt.ClickFocus) self.setMouseTracking(True) self.setRenderHints(QtGui.QPainter.Antialiasing) self.setViewportUpdateMode(QtGui.QGraphicsView.FullViewportUpdate) # Init QGraphic Scene self.sc = QtGui.QGraphicsScene() self.setScene(self.sc) self.sceneScale = 0.7 # Paint the background brush = QtGui.QBrush() brush.setTransform(QtGui.QTransform().scale(0.75, 0.75)) brush.setTextureImage(QtGui.QImage("/Users/draknova/Documents/workspace/sPipe/bin/images/gridTexture.jpg")) self.sc.setBackgroundBrush(brush) ###################### ####### EVENTS ####### ###################### ### KEYBOARD EVENTS ##
def __init__(self): QtGui.QGraphicsScene.__init__(self) self.__N_cities=0 self.__listCitys=[]
def AddWidgets(self): im = self.dataProcess.im draw = ImageDraw.Draw(im) self.setSizePolicy(QtGui.QSizePolicy.Policy.Expanding, QtGui.QSizePolicy.Policy.Expanding) # Saving the image file as an output file self.label = QtGui.QLabel() self.NodeSlider() im.save("BackgroundImage/output.png") # Loading the pixmap for better analysis loadedImage = QtGui.QImage() loadedImage.load("BackgroundImage/output.png") self.PixMap = QtGui.QPixmap.fromImage(loadedImage) self.ElectrodeView = ElectrodeView(self) x_interval = LayoutWidth/6 y_interval = LayoutHeight/6 for i in range(self.Chunks+1): self.SmallMultipleElectrode.append(ElectrodeView(self, i, x_interval,y_interval)) CommunitySelectPerTime = QtCore.Signal(list, int ,list, list) self.SmallMultipleElectrode[i].CommunitySelectPerTime.connect(self.SelectingCommunitiesInaTimestep) self.SmallMultipleElectrode[i].DataLink.connect(self.GettingDataFromSmallMultiples) self.SmallMultipleElectrode[i].CommunitySelectAcrossTime.connect(self.SelectingCommunitiesAcrossaTimestep) self.LayoutForSmallMultiples = LayoutForSmallMultiples(self,self.SmallMultipleElectrode,x_interval,y_interval) # # Use pycharm to have a better way to do it self.ImageView = QtGui.QHBoxLayout() self.ImageView2 = QtGui.QHBoxLayout() self.ImageView2.setContentsMargins(0, 0, 0, 0) self.ImageView2.addWidget(self.ElectrodeView) self.ImageView2.setContentsMargins(0, 0, 0, 0) # Image additions vbox = QtGui.QVBoxLayout() vbox.setContentsMargins(0, 0, 0, 0) vbox.addLayout(self.ImageView2) vbox.setContentsMargins(0, 0, 0, 0) self.scene = QtGui.QGraphicsScene(0, 0,500 ,600) self.setContentsMargins(0, 0, 0, 0) self.setLayout(vbox)
