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# QPaintEngineState Class Reference ## [[QtGui](index.htm) module] 该QPaintEngineState类提供有关活动的绘图引擎的当前状态信息。[More...](#details) ### Methods * `__init__ (self)` * `__init__ (self, QPaintEngineState)` * `QBrush backgroundBrush (self)` * `Qt.BGMode backgroundMode (self)` * `QBrush brush (self)` * `bool brushNeedsResolving (self)` * `QPointF brushOrigin (self)` * `Qt.ClipOperation clipOperation (self)` * `QPainterPath clipPath (self)` * `QRegion clipRegion (self)` * `QPainter.CompositionMode compositionMode (self)` * `QFont font (self)` * `bool isClipEnabled (self)` * `QMatrix matrix (self)` * `float opacity (self)` * `QPainter painter (self)` * `QPen pen (self)` * `bool penNeedsResolving (self)` * `QPainter.RenderHints renderHints (self)` * `QPaintEngine.DirtyFlags state (self)` * `QTransform transform (self)` * * * ## Detailed Description 该QPaintEngineState类提供有关活动的绘图引擎的当前状态信息。 哪些属性,自上一次绘图引擎进行了更新,以及它们的当前值已经改变QPaintEngineState记录。 这已更改的属性可以在任何时候使用被检索的[state](qpaintenginestate.html#state)()函数。这个函数返回的一个实例[QPaintEngine.DirtyFlags](qpaintengine.html#DirtyFlag-enum)其中存储的一个或组合型[QPaintEngine.DirtyFlag](qpaintengine.html#DirtyFlag-enum)值。该[QPaintEngine.DirtyFlag](qpaintengine.html#DirtyFlag-enum)枚举定义了自上次更新还是不是一个属性是否已更改。 如果属性是标有一个肮脏的标志,其当前值可以使用相应的get函数来检索: | Property Flag | Current Property Value | | --- | --- | | [QPaintEngine.DirtyBackground](qpaintengine.html#DirtyFlag-enum) | [backgroundBrush](qpaintenginestate.html#backgroundBrush)() | | [QPaintEngine.DirtyBackgroundMode](qpaintengine.html#DirtyFlag-enum) | [backgroundMode](qpaintenginestate.html#backgroundMode)() | | [QPaintEngine.DirtyBrush](qpaintengine.html#DirtyFlag-enum) | [brush](qpaintenginestate.html#brush)() | | [QPaintEngine.DirtyBrushOrigin](qpaintengine.html#DirtyFlag-enum) | [brushOrigin](qpaintenginestate.html#brushOrigin)() | | [QPaintEngine.DirtyClipRegion](qpaintengine.html#DirtyFlag-enum) _or_ [QPaintEngine.DirtyClipPath](qpaintengine.html#DirtyFlag-enum) | [clipOperation](qpaintenginestate.html#clipOperation)() | | [QPaintEngine.DirtyClipPath](qpaintengine.html#DirtyFlag-enum) | [clipPath](qpaintenginestate.html#clipPath)() | | [QPaintEngine.DirtyClipRegion](qpaintengine.html#DirtyFlag-enum) | [clipRegion](qpaintenginestate.html#clipRegion)() | | [QPaintEngine.DirtyCompositionMode](qpaintengine.html#DirtyFlag-enum) | [compositionMode](qpaintenginestate.html#compositionMode)() | | [QPaintEngine.DirtyFont](qpaintengine.html#DirtyFlag-enum) | [font](qpaintenginestate.html#font)() | | [QPaintEngine.DirtyTransform](qpaintengine.html#DirtyFlag-enum) | [transform](qpaintenginestate.html#transform)() | | [QPaintEngine.DirtyClipEnabled](qpaintengine.html#DirtyFlag-enum) | [isClipEnabled](qpaintenginestate.html#isClipEnabled)() | | [QPaintEngine.DirtyPen](qpaintengine.html#DirtyFlag-enum) | [pen](qpaintenginestate.html#pen)() | | [QPaintEngine.DirtyHints](qpaintengine.html#DirtyFlag-enum) | [renderHints](qpaintenginestate.html#renderHints)() | 该QPaintEngineState类还提供了[painter](qpaintenginestate.html#painter)( )函数返回一个指针,指向当前正在更新的绘图引擎的画家。 这个类,即主动绘图引擎的当前状态的一个实例,作为参数传递给[QPaintEngine.updateState](qpaintengine.html#updateState)()函数。实现自己的绘图引擎时,你将不得不直接使用这个类的唯一情况是。 * * * ## Method Documentation ``` QPaintEngineState.__init__ (self) ``` ``` QPaintEngineState.__init__ (self, QPaintEngineState) ``` ``` QBrush QPaintEngineState.backgroundBrush (self) ``` [ 返回当前绘图引擎状态的背景刷。 ](qbrush.html) [这个变量应该只用来当](qbrush.html)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyBackground](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` Qt.BGMode QPaintEngineState.backgroundMode (self) ``` [ 返回后台模式在当前的绘图引擎的状态。 ](qt.html#BGMode-enum) [这个变量应该只用来当](qt.html#BGMode-enum)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyBackgroundMode](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QBrush QPaintEngineState.brush (self) ``` [ 返回当前绘图引擎状态的笔刷。 ](qbrush.html) [这个变量应该只用来当](qbrush.html)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyBrush](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` bool QPaintEngineState.brushNeedsResolving (self) ``` 返回填充的坐标是否已被指定为界由当前的渲染操作和必须解决(关于当前呈现的原语) 。 此功能被引入Qt的4.3 。 ``` QPointF QPaintEngineState.brushOrigin (self) ``` [ 返回当前绘图引擎状态的画刷原点。 ](qpointf.html) [这个变量应该只用来当](qpointf.html)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyBrushOrigin](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` Qt.ClipOperation QPaintEngineState.clipOperation (self) ``` [ 返回当前绘图引擎状态的剪辑操作。 ](qt.html#ClipOperation-enum) [这个变量应该只用来当](qt.html#ClipOperation-enum)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括任[QPaintEngine.DirtyClipPath](qpaintengine.html#DirtyFlag-enum)或[QPaintEngine.DirtyClipRegion](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QPainterPath QPaintEngineState.clipPath (self) ``` [ 返回当前绘图引擎状态的剪辑路径。 ](qpainterpath.html) [这个变量应该只用来当](qpainterpath.html)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyClipPath](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QRegion QPaintEngineState.clipRegion (self) ``` [ 返回当前绘图引擎状态的剪辑区域。 ](qregion.html) [这个变量应该只用来当](qregion.html)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyClipRegion](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QPainter.CompositionMode QPaintEngineState.compositionMode (self) ``` [ 返回组成模式在当前的绘图引擎的状态。 ](qpainter.html#CompositionMode-enum) [这个变量应该只用来当](qpainter.html#CompositionMode-enum)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyCompositionMode](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QFont QPaintEngineState.font (self) ``` [ 返回当前绘图引擎状态的字体。 ](qfont.html) [这个变量应该只用来当](qfont.html)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyFont](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` bool QPaintEngineState.isClipEnabled (self) ``` 返回剪裁是否启用或不在当前的绘图引擎的状态。 这个变量应该只用来当[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyClipEnabled](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QMatrix QPaintEngineState.matrix (self) ``` [ ``` float QPaintEngineState.opacity (self) ``` 返回当前绘图引擎状态的不透明度。 这个函数中引入了Qt 4.2中。 ](qmatrix.html) ``` QPainter QPaintEngineState.painter (self) ``` [ 返回一个指针,指向当前正在更新的绘图引擎的画家。 ](qpainter.html) ``` QPen QPaintEngineState.pen (self) ``` [ 返回当前绘图引擎状态的笔。 ](qpen.html) [这个变量应该只用来当](qpen.html)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyPen](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` bool QPaintEngineState.penNeedsResolving (self) ``` 返回行程是否在坐标已被指定为界由当前渲染操作和必须解决(关于当前呈现的原语) 。 此功能被引入Qt的4.3 。 ``` QPainter.RenderHints QPaintEngineState.renderHints (self) ``` [ 返回当前绘图引擎状态的呈现提示。 ](index.htm) [这个变量应该只用来当](index.htm)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyHints](qpaintengine.html#DirtyFlag-enum)标志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QPaintEngine.DirtyFlags QPaintEngineState.state (self) ``` [](index.htm) [返回标志标识集,需要更新时,在调用期间更新绘图引擎的状态(即属性的组合](index.htm)[QPaintEngine.updateState](qpaintengine.html#updateState)()函数) 。 **See also** [QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QTransform QPaintEngineState.transform (self) ``` [ 返回当前绘图引擎状态矩阵。 ](qtransform.html) [这个变量应该只用来当](qtransform.html)[state](qpaintenginestate.html#state)( )返回一个组合,其中包括[QPaintEngine.DirtyTransform](qpaintengine.html#DirtyFlag-enum)标志。 此功能被引入Qt的4.3 。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。