WebApr 15, 2015 · Re: Understanding GraphicsView Viewport Size. If you want to get the actual size of a widget, you can override the showEvent (). By the time it gets there, the initial size and layout has been calculated and dimensions are correct. If you want to respond to changes in size, you also need to handle resizeEvent (). WebMay 10, 2009 · You can attach several views to the same scene, to provide several viewports into the same data set. The view widget is a scroll area, and provides scroll bars for navigating through large scenes. so simplify it, scene has items, viewport can view part of scene. scene can be unlimited size.
c++ - QGraphicsView Zooming in and out under mouse …
WebApr 12, 2024 · Introducing the latest professional GPU from Intel for mobile workstations: the Intel® Arc™ Pro A30M GPU. With built-in ray tracing hardware, graphics acceleration, and machine learning capabilities, the Intel Arc Pro A30M GPU for mobile unites fluid viewports—the latest in visual technologies—and rich content creation in a mobile form ... Webdef eventFilter(self, source, event): """ Public method to handle event for another object. @param source object to handle events for @type QObject @param event event to handle @type QEvent @return flag indicating that the event was handled @rtype bool """ if event.type() == QEvent.KeyPress: # Anywhere in the dialog, make hitting escape cancel … small storage box facilities
How to make ViewPort expand with QGraphicsView Qt Forum
WebFeb 9, 2024 · The glViewport function specifies the affine transformation of x and y from normalized device coordinates to window coordinates. Let ( xnd , ynd ) be normalized device coordinates. The window coordinates ( xw , yw ) are then computed as follows: Viewport width and height are silently clamped to a range that depends on the implementation. WebFeb 15, 2024 · 2)在该view上面,安装事件的过滤器self.graphicsView.viewport().installEventFilter(self) 3)在manWin上,超载eventFilte函数 def eventFilter(self, obj, event): WebPySide.QtGui.QGraphicsView.ViewportAnchor ¶ This enums describe the possible anchors that PySide.QtGui.QGraphicsView can use when the user resizes the view or when the view is transformed. See also PySide.QtGui.QGraphicsView.resizeAnchor () PySide.QtGui.QGraphicsView.transformationAnchor () … highway deaths in 2021