#include <qpaintengine_pic_p.h>

Inheritance diagram for QPicturePaintEngine:

Collaboration diagram for QPicturePaintEngine:

Public Member Functions
	QPicturePaintEngine ()

	~QPicturePaintEngine ()

bool	begin (QPaintDevice *pdev) override
	Reimplement this function to initialise your paint engine when painting is to start on the paint device pdev.

bool	end () override
	Reimplement this function to finish painting on the current paint device.

void	updateState (const QPaintEngineState &state) override
	Reimplement this function to update the state of a paint engine.

void	updatePen (const QPen &pen)

void	updateBrush (const QBrush &brush)

void	updateBrushOrigin (const QPointF &origin)

void	updateFont (const QFont &font)

void	updateBackground (Qt::BGMode bgmode, const QBrush &bgBrush)

void	updateMatrix (const QTransform &matrix)

void	updateClipRegion (const QRegion &region, Qt::ClipOperation op)

void	updateClipPath (const QPainterPath &path, Qt::ClipOperation op)

void	updateRenderHints (QPainter::RenderHints hints)

void	updateCompositionMode (QPainter::CompositionMode cmode)

void	updateClipEnabled (bool enabled)

void	updateOpacity (qreal opacity)

void	drawEllipse (const QRectF &rect) override
	Reimplement this function to draw the largest ellipse that can be contained within rectangle rect.

void	drawPath (const QPainterPath &path) override
	The default implementation ignores the path and does nothing.

void	drawPolygon (const QPointF *points, int numPoints, PolygonDrawMode mode) override
	Reimplement this virtual function to draw the polygon defined by the pointCount first points in points, using mode mode.

void	drawPixmap (const QRectF &r, const QPixmap &pm, const QRectF &sr) override
	Reimplement this function to draw the part of the pm specified by the sr rectangle in the given r.

void	drawTiledPixmap (const QRectF &r, const QPixmap &pixmap, const QPointF &s) override
	Reimplement this function to draw the pixmap in the given rect, starting at the given p.

void	drawImage (const QRectF &r, const QImage &image, const QRectF &sr, Qt::ImageConversionFlags flags=Qt::AutoColor) override
	Reimplement this function to draw the part of the image specified by the sr rectangle in the given rectangle using the given conversion flags flags, to convert it to a pixmap.

void	drawTextItem (const QPointF &p, const QTextItem &ti) override
	This function draws the text item textItem at position p.

Type	type () const override
	Reimplement this function to return the paint engine \l{Type}.

virtual void	drawPolygon (const QPointF *points, int pointCount, PolygonDrawMode mode)
	Reimplement this virtual function to draw the polygon defined by the pointCount first points in points, using mode mode.

virtual void	drawPolygon (const QPoint *points, int pointCount, PolygonDrawMode mode)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Reimplement this virtual function to draw the polygon defined by the pointCount first points in points, using mode mode.

Public Member Functions inherited from QPaintEngine
	QPaintEngine (PaintEngineFeatures features=PaintEngineFeatures())
	Creates a paint engine with the featureset specified by caps.

virtual	~QPaintEngine ()
	Destroys the paint engine.

bool	isActive () const
	Returns `true` if the paint engine is actively drawing; otherwise returns `false`.

void	setActive (bool newState)
	Sets the active state of the paint engine to state.

virtual bool	begin (QPaintDevice *pdev)=0
	Reimplement this function to initialise your paint engine when painting is to start on the paint device pdev.

virtual bool	end ()=0
	Reimplement this function to finish painting on the current paint device.

virtual void	updateState (const QPaintEngineState &state)=0
	Reimplement this function to update the state of a paint engine.

virtual void	drawRects (const QRect *rects, int rectCount)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.The default implementation converts the first rectCount rectangles in the buffer rects to a QRectF and calls the floating point version of this function.

virtual void	drawRects (const QRectF *rects, int rectCount)
	Draws the first rectCount rectangles in the buffer rects.

virtual void	drawLines (const QLine *lines, int lineCount)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.The default implementation converts the first lineCount lines in lines to a QLineF and calls the floating point version of this function.

virtual void	drawLines (const QLineF *lines, int lineCount)
	The default implementation splits the list of lines in lines into lineCount separate calls to drawPath() or drawPolygon() depending on the feature set of the paint engine.

virtual void	drawEllipse (const QRectF &r)
	Reimplement this function to draw the largest ellipse that can be contained within rectangle rect.

virtual void	drawEllipse (const QRect &r)
	The default implementation of this function calls the floating point version of this function.

virtual void	drawPath (const QPainterPath &path)
	The default implementation ignores the path and does nothing.

virtual void	drawPoints (const QPointF *points, int pointCount)
	Draws the first pointCount points in the buffer points.

virtual void	drawPoints (const QPoint *points, int pointCount)
	Draws the first pointCount points in the buffer points.

virtual void	drawPolygon (const QPointF *points, int pointCount, PolygonDrawMode mode)
	Reimplement this virtual function to draw the polygon defined by the pointCount first points in points, using mode mode.

virtual void	drawPolygon (const QPoint *points, int pointCount, PolygonDrawMode mode)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Reimplement this virtual function to draw the polygon defined by the pointCount first points in points, using mode mode.

virtual void	drawPixmap (const QRectF &r, const QPixmap &pm, const QRectF &sr)=0
	Reimplement this function to draw the part of the pm specified by the sr rectangle in the given r.

virtual void	drawTextItem (const QPointF &p, const QTextItem &textItem)
	This function draws the text item textItem at position p.

virtual void	drawTiledPixmap (const QRectF &r, const QPixmap &pixmap, const QPointF &s)
	Reimplement this function to draw the pixmap in the given rect, starting at the given p.

virtual void	drawImage (const QRectF &r, const QImage &pm, const QRectF &sr, Qt::ImageConversionFlags flags=Qt::AutoColor)
	Reimplement this function to draw the part of the image specified by the sr rectangle in the given rectangle using the given conversion flags flags, to convert it to a pixmap.

void	setPaintDevice (QPaintDevice *device)

QPaintDevice *	paintDevice () const
	Returns the device that this engine is painting on, if painting is active; otherwise returns \nullptr.

void	setSystemClip (const QRegion &baseClip)

QRegion	systemClip () const

void	setSystemRect (const QRect &rect)

QRect	systemRect () const

virtual QPoint	coordinateOffset () const

virtual Type	type () const =0
	Reimplement this function to return the paint engine \l{Type}.

void	fix_neg_rect (int x, int y, int w, int h)

bool	testDirty (DirtyFlags df)

void	setDirty (DirtyFlags df)

void	clearDirty (DirtyFlags df)

bool	hasFeature (PaintEngineFeatures feature) const
	Returns `true` if the paint engine supports the specified feature; otherwise returns `false`.

QPainter *	painter () const
	Returns the paint engine's painter.

void	syncState ()

bool	isExtended () const

virtual QPixmap	createPixmap (QSize size)

virtual QPixmap	createPixmapFromImage (QImage image, Qt::ImageConversionFlags flags=Qt::AutoColor)

Protected Member Functions
	QPicturePaintEngine (QPaintEnginePrivate &dptr)

Protected Member Functions inherited from QPaintEngine
	QPaintEngine (QPaintEnginePrivate &data, PaintEngineFeatures devcaps=PaintEngineFeatures())

Additional Inherited Members
Public Types inherited from QPaintEngine
enum	PaintEngineFeature { PrimitiveTransform = 0x00000001 , PatternTransform = 0x00000002 , PixmapTransform = 0x00000004 , PatternBrush = 0x00000008 , LinearGradientFill = 0x00000010 , RadialGradientFill = 0x00000020 , ConicalGradientFill = 0x00000040 , AlphaBlend = 0x00000080 , PorterDuff = 0x00000100 , PainterPaths = 0x00000200 , Antialiasing = 0x00000400 , BrushStroke = 0x00000800 , ConstantOpacity = 0x00001000 , MaskedBrush = 0x00002000 , PerspectiveTransform = 0x00004000 , BlendModes = 0x00008000 , ObjectBoundingModeGradients = 0x00010000 , RasterOpModes = 0x00020000 , PaintOutsidePaintEvent = 0x20000000 , AllFeatures = 0xffffffff }
	This enum is used to describe the features or capabilities that the paint engine has. More...

enum	DirtyFlag { DirtyPen = 0x0001 , DirtyBrush = 0x0002 , DirtyBrushOrigin = 0x0004 , DirtyFont = 0x0008 , DirtyBackground = 0x0010 , DirtyBackgroundMode = 0x0020 , DirtyTransform = 0x0040 , DirtyClipRegion = 0x0080 , DirtyClipPath = 0x0100 , DirtyHints = 0x0200 , DirtyCompositionMode = 0x0400 , DirtyClipEnabled = 0x0800 , DirtyOpacity = 0x1000 , AllDirty = 0xffff }
	\value DirtyPen The pen is dirty and needs to be updated. More...

enum	PolygonDrawMode { OddEvenMode , WindingMode , ConvexMode , PolylineMode }
	\value OddEvenMode The polygon should be drawn using OddEven fill rule. More...

enum	Type { X11 , Windows , QuickDraw , CoreGraphics , MacPrinter , QWindowSystem , OpenGL , Picture , SVG , Raster , Direct3D , Pdf , OpenVG , OpenGL2 , PaintBuffer , Blitter , Direct2D , User = 50 , MaxUser = 100 }
	\value X11 \value Windows \value MacPrinter \value CoreGraphics \macos's Quartz2D (CoreGraphics) \value QuickDraw \macos's QuickDraw \value QWindowSystem Qt for Embedded Linux \value OpenGL \value Picture QPicture format \value SVG Scalable Vector Graphics XML format \value Raster \value Direct3D Windows only, Direct3D based engine \value Pdf Portable Document Format \value OpenVG \value User First user type ID \value MaxUser Last user type ID \value OpenGL2 \value PaintBuffer \value Blitter \value Direct2D Windows only, Direct2D based engine More...

Protected Attributes inherited from QPaintEngine
QPaintEngineState *	state

PaintEngineFeatures	gccaps

uint	active: 1

uint	selfDestruct: 1

uint	extended: 1

QScopedPointer< QPaintEnginePrivate >	d_ptr

Detailed Description

Definition at line 28 of file qpaintengine_pic_p.h.

Constructor & Destructor Documentation

◆ QPicturePaintEngine() [1/2]

QPicturePaintEngine::QPicturePaintEngine ( )

Definition at line 36 of file qpaintengine_pic.cpp.

References d.

◆ ~QPicturePaintEngine()

QPicturePaintEngine::~QPicturePaintEngine ( )

Definition at line 50 of file qpaintengine_pic.cpp.

◆ QPicturePaintEngine() [2/2]

QPicturePaintEngine::QPicturePaintEngine ( QPaintEnginePrivate & dptr )

protected

Definition at line 43 of file qpaintengine_pic.cpp.

References d.

Member Function Documentation

◆ begin()

bool QPicturePaintEngine::begin ( QPaintDevice * pdev )

overridevirtual

Reimplement this function to initialise your paint engine when painting is to start on the paint device pdev.

Return true if the initialization was successful; otherwise return false.

See also: end(), isActive()

Implements QPaintEngine.

Definition at line 54 of file qpaintengine_pic.cpp.

References QPicture::boundingRect(), d, QPicturePrivate::PdcBegin, Q_ASSERT, qDebug, qt_mfhdr_tag, QPaintEngine::setActive(), QIODeviceBase::Truncate, and QIODeviceBase::WriteOnly.

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◆ drawEllipse()

void QPicturePaintEngine::drawEllipse ( const QRectF & rect )

overridevirtual

Reimplement this function to draw the largest ellipse that can be contained within rectangle rect.

The default implementation calls drawPolygon().

Reimplemented from QPaintEngine.

Definition at line 338 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcDrawEllipse, pos, qDebug, rect, and SERIALIZE_CMD.

◆ drawImage()

void QPicturePaintEngine::drawImage	(	const QRectF &	r,
		const QImage &	pm,
		const QRectF &	sr,
		Qt::ImageConversionFlags	flags = `Qt::AutoColor`
	)

overridevirtual

Reimplement this function to draw the part of the image specified by the sr rectangle in the given rectangle using the given conversion flags flags, to convert it to a pixmap.

Reimplemented from QPaintEngine.

Definition at line 424 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcDrawImage, pos, qDebug, and SERIALIZE_CMD.

◆ drawPath()

void QPicturePaintEngine::drawPath ( const QPainterPath & path )

overridevirtual

The default implementation ignores the path and does nothing.

Reimplemented from QPaintEngine.

Definition at line 350 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcDrawPath, pos, qDebug, and SERIALIZE_CMD.

◆ drawPixmap()

void QPicturePaintEngine::drawPixmap	(	const QRectF &	r,
		const QPixmap &	pm,
		const QRectF &	sr
	)

overridevirtual

Reimplement this function to draw the part of the pm specified by the sr rectangle in the given r.

Implements QPaintEngine.

Definition at line 387 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcDrawPixmap, pos, qDebug, and SERIALIZE_CMD.

◆ drawPolygon() [1/3]

void QPaintEngine::drawPolygon	(	const QPoint *	points,
		int	pointCount,
		PolygonDrawMode	mode
	)

virtual

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Reimplement this virtual function to draw the polygon defined by the pointCount first points in points, using mode mode.

Note: At least one of the drawPolygon() functions must be reimplemented.

Reimplemented from QPaintEngine.

Definition at line 137 of file qpaintengine.cpp.

◆ drawPolygon() [2/3]

void QPicturePaintEngine::drawPolygon	(	const QPointF *	points,
		int	pointCount,
		PolygonDrawMode	mode
	)

overridevirtual

Reimplement this virtual function to draw the polygon defined by the pointCount first points in points, using mode mode.

Note: At least one of the drawPolygon() functions must be reimplemented.

Reimplemented from QPaintEngine.

Definition at line 362 of file qpaintengine_pic.cpp.

References d, i, QPaintEngine::OddEvenMode, QPicturePrivate::PdcDrawPolygon, QPicturePrivate::PdcDrawPolyline, QPaintEngine::PolylineMode, pos, qDebug, qint8, and SERIALIZE_CMD.

◆ drawPolygon() [3/3]

void QPaintEngine::drawPolygon	(	const QPointF *	points,
		int	pointCount,
		PolygonDrawMode	mode
	)

virtual

Reimplement this virtual function to draw the polygon defined by the pointCount first points in points, using mode mode.

Note: At least one of the drawPolygon() functions must be reimplemented.

Reimplemented from QPaintEngine.

Definition at line 136 of file qpaintengine.cpp.

◆ drawTextItem()

void QPicturePaintEngine::drawTextItem	(	const QPointF &	p,
		const QTextItem &	textItem
	)

overridevirtual

This function draws the text item textItem at position p.

The default implementation of this function converts the text to a QPainterPath and paints the resulting path.

Reimplemented from QPaintEngine.

Definition at line 443 of file qpaintengine_pic.cpp.

References QTextItem::ascent(), QTextItemInt::chars, d, QFontPrivate::dpi, QPaintEngine::drawTextItem(), QTextItem::font(), QTextItemInt::justified, QPicturePrivate::PdcDrawText2, QPicturePrivate::PdcDrawTextItem, pos, qDebug, qt_defaultDpi(), QTextItem::renderFlags(), SERIALIZE_CMD, QFont::setOverline(), QFont::setStrikeOut(), QFont::setUnderline(), QTextItem::text(), QFixed::toReal(), and QTextItemInt::width.

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◆ drawTiledPixmap()

void QPicturePaintEngine::drawTiledPixmap	(	const QRectF &	rect,
		const QPixmap &	pixmap,
		const QPointF &	p
	)

overridevirtual

Reimplement this function to draw the pixmap in the given rect, starting at the given p.

The pixmap will be drawn repeatedly until the rect is filled.

Reimplemented from QPaintEngine.

Definition at line 406 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcDrawTiledPixmap, pixmap, pos, qDebug, and SERIALIZE_CMD.

◆ end()

bool QPicturePaintEngine::end ( )

overridevirtual

Reimplement this function to finish painting on the current paint device.

Return true if painting was finished successfully; otherwise return false.

See also: begin(), isActive()

Implements QPaintEngine.

Definition at line 87 of file qpaintengine_pic.cpp.

References boundingRect(), d, QPicturePrivate::PdcEnd, pos, qChecksum(), qDebug, and QPaintEngine::setActive().

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◆ type()

Type QPicturePaintEngine::type ( ) const

inlineoverridevirtual

Reimplement this function to return the paint engine \l{Type}.

Implements QPaintEngine.

Definition at line 64 of file qpaintengine_pic_p.h.

References QPaintEngine::Picture.

◆ updateBackground()

void QPicturePaintEngine::updateBackground	(	Qt::BGMode	bgmode,
		const QBrush &	bgBrush
	)

Definition at line 219 of file qpaintengine_pic.cpp.

References QBrush::color(), d, QPicturePrivate::PdcSetBkColor, QPicturePrivate::PdcSetBkMode, pos, qDebug, qint8, SERIALIZE_CMD, and QBrush::style().

Referenced by updateState().

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◆ updateBrush()

void QPicturePaintEngine::updateBrush ( const QBrush & brush )

Definition at line 176 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcSetBrush, pos, qDebug, and SERIALIZE_CMD.

Referenced by updateState().

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◆ updateBrushOrigin()

void QPicturePaintEngine::updateBrushOrigin ( const QPointF & origin )

Definition at line 194 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcSetBrushOrigin, pos, qDebug, and SERIALIZE_CMD.

Referenced by updateState().

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◆ updateClipEnabled()

void QPicturePaintEngine::updateClipEnabled ( bool enabled )

Definition at line 152 of file qpaintengine_pic.cpp.

References d, enabled, QPicturePrivate::PdcSetClipEnabled, pos, qDebug, and SERIALIZE_CMD.

Referenced by updateState().

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◆ updateClipPath()

void QPicturePaintEngine::updateClipPath	(	const QPainterPath &	path,
		Qt::ClipOperation	op
	)

Definition at line 260 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcSetClipPath, pos, qDebug, qint8, and SERIALIZE_CMD.

Referenced by updateState().

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◆ updateClipRegion()

void QPicturePaintEngine::updateClipRegion	(	const QRegion &	region,
		Qt::ClipOperation	op
	)

Definition at line 247 of file qpaintengine_pic.cpp.

References QRegion::boundingRect(), d, QPicturePrivate::PdcSetClipRegion, pos, qDebug, qint8, and SERIALIZE_CMD.

Referenced by updateState().

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◆ updateCompositionMode()

void QPicturePaintEngine::updateCompositionMode ( QPainter::CompositionMode cmode )

Definition at line 140 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcSetCompositionMode, pos, qDebug, and SERIALIZE_CMD.

Referenced by updateState().

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◆ updateFont()

void QPicturePaintEngine::updateFont ( const QFont & font )

Definition at line 206 of file qpaintengine_pic.cpp.

References d, font, QPicturePrivate::PdcSetFont, QFont::pointSize(), pos, qDebug, and SERIALIZE_CMD.

Referenced by updateState().

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◆ updateMatrix()

void QPicturePaintEngine::updateMatrix ( const QTransform & matrix )

Definition at line 235 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcSetWMatrix, pos, qDebug, qint8, and SERIALIZE_CMD.

Referenced by updateState().

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◆ updateOpacity()

void QPicturePaintEngine::updateOpacity ( qreal opacity )

Definition at line 164 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcSetOpacity, pos, qDebug, and SERIALIZE_CMD.

Referenced by updateState().

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◆ updatePen()

void QPicturePaintEngine::updatePen ( const QPen & pen )

Definition at line 121 of file qpaintengine_pic.cpp.

References QPen::color(), d, QPicturePrivate::PdcSetPen, pos, qDebug, SERIALIZE_CMD, QPen::style(), and QPen::width().

Referenced by updateState().

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◆ updateRenderHints()

void QPicturePaintEngine::updateRenderHints ( QPainter::RenderHints hints )

Definition at line 274 of file qpaintengine_pic.cpp.

References d, QPicturePrivate::PdcSetRenderHint, pos, qDebug, and SERIALIZE_CMD.

Referenced by updateState().

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◆ updateState()

void QPicturePaintEngine::updateState ( const QPaintEngineState & state )

overridevirtual

Reimplement this function to update the state of a paint engine.

When implemented, this function is responsible for checking the paint engine's current state and update the properties that are changed. Use the QPaintEngineState::state() function to find out which properties that must be updated, then use the corresponding \l {GetFunction}{get function} to retrieve the current values for the given properties.

See also: QPaintEngineState

Implements QPaintEngine.

Definition at line 483 of file qpaintengine_pic.cpp.

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The documentation for this class was generated from the following files:

qtbase/src/gui/image/qpaintengine_pic_p.h
qtbase/src/gui/image/qpaintengine_pic.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QPicturePaintEngine() [1/2]

◆ ~QPicturePaintEngine()

◆ QPicturePaintEngine() [2/2]

Member Function Documentation

◆ begin()

◆ drawEllipse()

◆ drawImage()

◆ drawPath()

◆ drawPixmap()

◆ drawPolygon() [1/3]

◆ drawPolygon() [2/3]

◆ drawPolygon() [3/3]

◆ drawTextItem()

◆ drawTiledPixmap()

◆ end()

◆ type()

◆ updateBackground()

◆ updateBrush()

◆ updateBrushOrigin()

◆ updateClipEnabled()

◆ updateClipPath()

◆ updateClipRegion()

◆ updateCompositionMode()

◆ updateFont()

◆ updateMatrix()

◆ updateOpacity()

◆ updatePen()

◆ updateRenderHints()

◆ updateState()