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                # QPaintEngineState Class Reference ## [[QtGui](index.htm) module] 該QPaintEngineState類提供有關活動的繪圖引擎的當前狀態信息。[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 該QPaintEngineState類提供有關活動的繪圖引擎的當前狀態信息。 哪些屬性,自上一次繪圖引擎進行了更新,以及它們的當前值已經改變QPaintEngineState記錄。 這已更改的屬性可以在任何時候使用被檢索的[state](qpaintenginestate.html#state)()函數。這個函數返回的一個實例[QPaintEngine.DirtyFlags](qpaintengine.html#DirtyFlag-enum)其中存儲的一個或組合型[QPaintEngine.DirtyFlag](qpaintengine.html#DirtyFlag-enum)值。該[QPaintEngine.DirtyFlag](qpaintengine.html#DirtyFlag-enum)枚舉定義了自上次更新還是不是一個屬性是否已更改。 如果屬性是標有一個骯臟的標志,其當前值可以使用相應的get函數來檢索: | 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)() | 該QPaintEngineState類還提供了[painter](qpaintenginestate.html#painter)( )函數返回一個指針,指向當前正在更新的繪圖引擎的畫家。 這個類,即主動繪圖引擎的當前狀態的一個實例,作為參數傳遞給[QPaintEngine.updateState](qpaintengine.html#updateState)()函數。實現自己的繪圖引擎時,你將不得不直接使用這個類的唯一情況是。 * * * ## Method Documentation ``` QPaintEngineState.__init__ (self) ``` ``` QPaintEngineState.__init__ (self, QPaintEngineState) ``` ``` QBrush QPaintEngineState.backgroundBrush (self) ``` [ 返回當前繪圖引擎狀態的背景刷。 ](qbrush.html) [這個變量應該只用來當](qbrush.html)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyBackground](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` Qt.BGMode QPaintEngineState.backgroundMode (self) ``` [ 返回后臺模式在當前的繪圖引擎的狀態。 ](qt.html#BGMode-enum) [這個變量應該只用來當](qt.html#BGMode-enum)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyBackgroundMode](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QBrush QPaintEngineState.brush (self) ``` [ 返回當前繪圖引擎狀態的筆刷。 ](qbrush.html) [這個變量應該只用來當](qbrush.html)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyBrush](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` bool QPaintEngineState.brushNeedsResolving (self) ``` 返回填充的坐標是否已被指定為界由當前的渲染操作和必須解決(關于當前呈現的原語) 。 此功能被引入Qt的4.3 。 ``` QPointF QPaintEngineState.brushOrigin (self) ``` [ 返回當前繪圖引擎狀態的畫刷原點。 ](qpointf.html) [這個變量應該只用來當](qpointf.html)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyBrushOrigin](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` Qt.ClipOperation QPaintEngineState.clipOperation (self) ``` [ 返回當前繪圖引擎狀態的剪輯操作。 ](qt.html#ClipOperation-enum) [這個變量應該只用來當](qt.html#ClipOperation-enum)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括任[QPaintEngine.DirtyClipPath](qpaintengine.html#DirtyFlag-enum)或[QPaintEngine.DirtyClipRegion](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QPainterPath QPaintEngineState.clipPath (self) ``` [ 返回當前繪圖引擎狀態的剪輯路徑。 ](qpainterpath.html) [這個變量應該只用來當](qpainterpath.html)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyClipPath](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QRegion QPaintEngineState.clipRegion (self) ``` [ 返回當前繪圖引擎狀態的剪輯區域。 ](qregion.html) [這個變量應該只用來當](qregion.html)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyClipRegion](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QPainter.CompositionMode QPaintEngineState.compositionMode (self) ``` [ 返回組成模式在當前的繪圖引擎的狀態。 ](qpainter.html#CompositionMode-enum) [這個變量應該只用來當](qpainter.html#CompositionMode-enum)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyCompositionMode](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QFont QPaintEngineState.font (self) ``` [ 返回當前繪圖引擎狀態的字體。 ](qfont.html) [這個變量應該只用來當](qfont.html)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyFont](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` bool QPaintEngineState.isClipEnabled (self) ``` 返回剪裁是否啟用或不在當前的繪圖引擎的狀態。 這個變量應該只用來當[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyClipEnabled](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QMatrix QPaintEngineState.matrix (self) ``` [ ``` float QPaintEngineState.opacity (self) ``` 返回當前繪圖引擎狀態的不透明度。 這個函數中引入了Qt 4.2中。 ](qmatrix.html) ``` QPainter QPaintEngineState.painter (self) ``` [ 返回一個指針,指向當前正在更新的繪圖引擎的畫家。 ](qpainter.html) ``` QPen QPaintEngineState.pen (self) ``` [ 返回當前繪圖引擎狀態的筆。 ](qpen.html) [這個變量應該只用來當](qpen.html)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyPen](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` bool QPaintEngineState.penNeedsResolving (self) ``` 返回行程是否在坐標已被指定為界由當前渲染操作和必須解決(關于當前呈現的原語) 。 此功能被引入Qt的4.3 。 ``` QPainter.RenderHints QPaintEngineState.renderHints (self) ``` [ 返回當前繪圖引擎狀態的呈現提示。 ](index.htm) [這個變量應該只用來當](index.htm)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyHints](qpaintengine.html#DirtyFlag-enum)標志。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QPaintEngine.DirtyFlags QPaintEngineState.state (self) ``` [](index.htm) [返回標志標識集,需要更新時,在調用期間更新繪圖引擎的狀態(即屬性的組合](index.htm)[QPaintEngine.updateState](qpaintengine.html#updateState)()函數) 。 **See also** [QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。 ``` QTransform QPaintEngineState.transform (self) ``` [ 返回當前繪圖引擎狀態矩陣。 ](qtransform.html) [這個變量應該只用來當](qtransform.html)[state](qpaintenginestate.html#state)( )返回一個組合,其中包括[QPaintEngine.DirtyTransform](qpaintengine.html#DirtyFlag-enum)標志。 此功能被引入Qt的4.3 。 **See also** [state](qpaintenginestate.html#state)()和[QPaintEngine.updateState](qpaintengine.html#updateState)( ) 。
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