The QPaintEngineState 類提供活動描繪引擎當前狀態的有關信息。 更多...
| 頭： | #include <QPaintEngineState> |
| qmake: | QT += gui |
| Since: | Qt 4.1 |
注意： 此類的所有函數 可重入 .
| QBrush | backgroundBrush () const |
| Qt::BGMode | backgroundMode () const |
| QBrush | brush () const |
| bool | brushNeedsResolving () const |
| QPointF | brushOrigin () const |
| Qt::ClipOperation | clipOperation () const |
| QPainterPath | clipPath () const |
| QRegion | clipRegion () const |
| QPainter::CompositionMode | compositionMode () const |
| QFont | font () const |
| bool | isClipEnabled () const |
| qreal | opacity () const |
| QPainter * | painter () const |
| QPen | pen () const |
| bool | penNeedsResolving () const |
| QPainter::RenderHints | renderHints () const |
| QPaintEngine::DirtyFlags | state () const |
| QTransform | transform () const |
The QPaintEngineState 類提供活動描繪引擎當前狀態的有關信息。
QPaintEngineState records which properties that have changed since the last time the paint engine was updated, as well as their current value.
Which properties that have changed can at any time be retrieved using the state () function. This function returns an instance of the QPaintEngine::DirtyFlags type which stores an OR combination of QPaintEngine::DirtyFlag values. The QPaintEngine::DirtyFlag enum defines whether a property has changed since the last update or not.
If a property is marked with a dirty flag, its current value can be retrieved using the corresponding get function:
The QPaintEngineState class also provide the painter () function which returns a pointer to the painter that is currently updating the paint engine.
An instance of this class, representing the current state of the active paint engine, is passed as argument to the QPaintEngine::updateState () function. The only situation in which you will have to use this class directly is when implementing your own paint engine.
另請參閱 QPaintEngine .
Returns the background brush in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyBackground 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns the background mode in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyBackgroundMode 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns the brush in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyBrush 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns whether the coordinate of the fill have been specified as bounded by the current rendering operation and have to be resolved (about the currently rendered primitive).
該函數在 Qt 4.3 引入。
Returns the brush origin in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyBrushOrigin 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns the clip operation in the current paint engine state.
This variable should only be used when the state () returns a combination which includes either the QPaintEngine::DirtyClipPath 或 QPaintEngine::DirtyClipRegion 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns the clip path in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyClipPath 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns the clip region in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyClipRegion 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns the composition mode in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyCompositionMode 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns the font in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyFont 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns whether clipping is enabled or not in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyClipEnabled 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns the opacity in the current paint engine state.
該函數在 Qt 4.2 引入。
Returns a pointer to the painter currently updating the paint engine.
Returns the pen in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyPen 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns whether the coordinate of the stroke have been specified as bounded by the current rendering operation and have to be resolved (about the currently rendered primitive).
該函數在 Qt 4.3 引入。
Returns the render hints in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyHints 標誌。
另請參閱 state () 和 QPaintEngine::updateState ().
Returns a combination of flags identifying the set of properties that need to be updated when updating the paint engine's state (i.e. during a call to the QPaintEngine::updateState () 函數)。
另請參閱 QPaintEngine::updateState ().
Returns the matrix in the current paint engine state.
This variable should only be used when the state () returns a combination which includes the QPaintEngine::DirtyTransform 標誌。
該函數在 Qt 4.3 引入。
另請參閱 state () 和 QPaintEngine::updateState ().
