Qgraphicsview slot

Rotates the current view transformation angle degrees clockwise.When rubberband selection ends this signal will be emitted with null vales.QGraphicsView can cache pre-rendered content in a QPixmap, which is then drawn onto the viewport.

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Code Coverage Of Unit Tests Using Qt 5 On macOS. which lines of code have actually been executed while running an application. private slots: void test.

See also drawBackground () and QGraphicsScene::drawForeground ().armoured fighting vehicle. armoured fighting vehicle attack aircraft battle Search: caliber combined arms Armoured Fighting Vehicles. firepower trench warfare.See the ViewportUpdateMode documentation for specific details.The interface consists of a QGraphicsView. Stack Overflow. Qt/C++ - confused about caller/callee, object ownership. (RobotArmLocation &loc).You can either pass a matrix to setTransform (), or you can call one of the convenience functions rotate (), scale (), translate () or shear ().If all you want is to ensure that a certain area is visible, (but not necessarily centered,) you can call ensureVisible () instead.This allows you to leave the painter in an altered state (i.e., you can call QPainter::setPen () or QPainter::setBrush () without restoring the state after painting).

If no current transformation is set, the identity matrix is returned.Draws the foreground of the scene using painter, after the background and all items are drawn.

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The disadvantage is that areas that have not changed also need to be redrawn.

X Window Programming/Print version. SGI would continue to try to maintain a vendor lock by pushing the higher. as well as the QGraphicsView framework for...Returns true if the view is transformed (i.e., a non-identity transform has been assigned, or the scrollbars are adjusted).For example, you can call mapToScene () to map a view coordiate to a floating point scene coordinate, or mapFromScene () to map from floating point scene coordinates to view coordinates.


QGraphicsView supports affine transformations, using QTransform.

qt - How to differentiate between traditional and simplified Chinese using QLocale qt.Evolutionary innovation continued after the Devonian period. Most plant groups were relatively unscathed by the Permo-Triassic extinction event,.This convenience function is equivalent to calling fitInView ( QRectF ( x, y, w, h ), aspectRatioMode ).Returns the viewport polygon polygon mapped to a scene coordinate polygon.

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This property holds whether the view allows scene interaction.

Although this approach provides the best performance in general, if there are many small visible changes on the scene, QGraphicsView might end up spending more time finding the minimal approach than it will spend drawing.You can access this widget by calling viewport (), or you can replace it by calling setViewport ().В него лишь закидываем объект класса QGraphicsView и. signals: public slots:. server_ip_loc = server_ip.

製品 > ソフトウェア > Linux > Linux技術情報 Linux matrix 逆引き rpmリスト - Kernel 2.6(IA64) Red Hat Enterprise Linux 5 #4-4.Returns a pointer to the scene that is currently visualized in the view.

Returns the item at position pos, which is in viewport coordinates.711 // if the reply is coming from INIT command, then initialize the FLL config.Draws the background of the scene using painter, before any items and the foreground are drawn.Item interaction is enabled by default, and you can toggle it by calling setInteractive ().class GraphicsView (QGraphicsView):. (tip) if slot is not None: action. triggered. connect (slot) if checkable: action. setCheckable (True) return action.Invalidates and schedules a redraw of layers inside rect. rect is in scene coordinates.

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This function is useful for capturing the contents of the view onto a paint device, such as a QImage (e.g., to take a screenshot), or for printing to QPrinter.Returns the scene rectangle rect to a viewport coordinate polygon.

Returns the scene coordinate polygon polygon to a viewport coordinate polygon.To change the default render hints that QGraphicsView passes to QPainter when painting items, you can call setRenderHints ().