QtGui.QPaintEngineState Class Reference

The QPaintEngineState class provides information about the active paint engine's current state. More...

Inheritance diagram for QtGui.QPaintEngineState:

Collaboration diagram for QtGui.QPaintEngineState:

Public Member Functions
	QPaintEngineState ()
	QPaintEngineState (QPaintEngineState copy)
virtual void	CreateProxy ()
new QBrush	BackgroundBrush ()
new Qt.BGMode	BackgroundMode ()
new QBrush	Brush ()
new bool	BrushNeedsResolving ()
new QPointF	BrushOrigin ()
new Qt.ClipOperation	ClipOperation ()
new QPainterPath	ClipPath ()
new QRegion	ClipRegion ()
new QPainter.CompositionMode	CompositionMode ()
new QFont	Font ()
new bool	IsClipEnabled ()
new QMatrix	Matrix ()
new double	Opacity ()
new QPainter	Painter ()
new QPen	Pen ()
new bool	PenNeedsResolving ()
new QPainter.RenderHint	RenderHints ()
new QPaintEngine.DirtyFlag	State ()
new QTransform	Transform ()
new void	Dispose ()

Protected Member Functions
	QPaintEngineState (System.Type dummy)

Protected Attributes
SmokeInvocation	interceptor

Properties
virtual System.IntPtr	SmokeObject [get, set]
new QPaintEngine.DirtyFlag	DirtyFlags [get, set]

Detailed Description

The QPaintEngineState class provides information about the active paint engine's current state.

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:

Property FlagCurrent Property Value

QPaintEngine::DirtyBackground backgroundBrush()

QPaintEngine::DirtyBackgroundMode backgroundMode()

QPaintEngine::DirtyBrush brush()

QPaintEngine::DirtyBrushOrigin brushOrigin()

QPaintEngine::DirtyClipRegion or QPaintEngine::DirtyClipPath clipOperation()

QPaintEngine::DirtyClipPath clipPath()

QPaintEngine::DirtyClipRegion clipRegion()

QPaintEngine::DirtyCompositionMode compositionMode()

QPaintEngine::DirtyFont font()

QPaintEngine::DirtyTransform transform()

QPaintEngine::DirtyClipEnabled isClipEnabled()

QPaintEngine::DirtyPen pen()

QPaintEngine::DirtyHints renderHints()

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.

See also QPaintEngine.

Constructor & Destructor Documentation

QtGui.QPaintEngineState.QPaintEngineState ( System.Type  dummy )

protected

QtGui.QPaintEngineState.QPaintEngineState

(

)

QtGui.QPaintEngineState.QPaintEngineState

(

QPaintEngineState

copy

)

Member Function Documentation

new QBrush QtGui.QPaintEngineState.BackgroundBrush

(

)

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 flag.

See also state() and QPaintEngine::updateState().

new Qt.BGMode QtGui.QPaintEngineState.BackgroundMode

(

)

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 flag.

See also state() and QPaintEngine::updateState().

new QBrush QtGui.QPaintEngineState.Brush

(

)

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 flag.

See also state() and QPaintEngine::updateState().

new bool QtGui.QPaintEngineState.BrushNeedsResolving

(

)

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).

This function was introduced in Qt 4.3.

new QPointF QtGui.QPaintEngineState.BrushOrigin

(

)

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 flag.

See also state() and QPaintEngine::updateState().

new Qt.ClipOperation QtGui.QPaintEngineState.ClipOperation

(

)

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 or the QPaintEngine::DirtyClipRegion flag.

See also state() and QPaintEngine::updateState().

new QPainterPath QtGui.QPaintEngineState.ClipPath

(

)

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 flag.

See also state() and QPaintEngine::updateState().

new QRegion QtGui.QPaintEngineState.ClipRegion

(

)

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 flag.

See also state() and QPaintEngine::updateState().

new QPainter.CompositionMode QtGui.QPaintEngineState.CompositionMode

(

)

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 flag.

See also state() and QPaintEngine::updateState().

virtual void QtGui.QPaintEngineState.CreateProxy ( )

virtual

new void QtGui.QPaintEngineState.Dispose

(

)

new QFont QtGui.QPaintEngineState.Font

(

)

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 flag.

See also state() and QPaintEngine::updateState().

new bool QtGui.QPaintEngineState.IsClipEnabled

(

)

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 flag.

See also state() and QPaintEngine::updateState().

new QMatrix QtGui.QPaintEngineState.Matrix

(

)

Returns the matrix in the current paint engine state.

Note: It is advisable to use transform() instead of this function to preserve the properties of perspective transformations.

This variable should only be used when the state() returns a combination which includes the QPaintEngine::DirtyTransform flag.

This function was introduced in Qt 4.2.

See also state() and QPaintEngine::updateState().

new double QtGui.QPaintEngineState.Opacity

(

)

Returns the opacity in the current paint engine state.

This function was introduced in Qt 4.2.

new QPainter QtGui.QPaintEngineState.Painter

(

)

Returns a pointer to the painter currently updating the paint engine.

new QPen QtGui.QPaintEngineState.Pen

(

)

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 flag.

See also state() and QPaintEngine::updateState().

new bool QtGui.QPaintEngineState.PenNeedsResolving

(

)

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).

This function was introduced in Qt 4.3.

new QPainter.RenderHint QtGui.QPaintEngineState.RenderHints

(

)

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 flag.

See also state() and QPaintEngine::updateState().

new QPaintEngine.DirtyFlag QtGui.QPaintEngineState.State

(

)

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() function).

See also QPaintEngine::updateState().

new QTransform QtGui.QPaintEngineState.Transform

(

)

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 flag.

This function was introduced in Qt 4.3.

See also state() and QPaintEngine::updateState().

Member Data Documentation

SmokeInvocation QtGui.QPaintEngineState.interceptor

protected

Property Documentation

new QPaintEngine.DirtyFlag QtGui.QPaintEngineState.DirtyFlags

getsetprotected

virtual System.IntPtr QtGui.QPaintEngineState.SmokeObject

getset