The CPaintEngine class provides an abstract definition of how CPainter draws to a given device on a given platform. More...

#include <PaintEngine.h>

Inheritance diagram for ParaEngine::CPaintEngine:

Public Types
enum	DirtyFlags { 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 }

enum	PolygonDrawMode { OddEvenMode, WindingMode, ConvexMode, PolylineMode }

Public Member Functions
virtual CPainterState *	createState (CPainterState *orig) const

virtual void	setState (CPainterState *s)

CPainterState *	GetState ()

const CPainterState *	GetState () const

bool	isActive () const

void	setActive (bool newState)

virtual bool	begin (CPaintDevice *pdev)=0

virtual bool	end ()=0

virtual void	Flush ()

virtual void	ApplyStateChanges ()

virtual void	updateState (const CPaintEngineState &state)=0

virtual void	drawRects (const QRect *rects, int rectCount)

virtual void	drawRects (const QRectF *rects, int rectCount)

virtual void	drawLines (const QLine *lines, int lineCount)

virtual void	drawLines (const QLineF *lines, int lineCount)

virtual void	drawLines (const Vector3 *vertices, int lineCount)

virtual void	drawEllipse (const QRectF &r)

virtual void	drawEllipse (const QRect &r)

virtual void	drawTriangles (const Vector3 *vertices, int nTriangleCount)

virtual void	drawPath (const CPainterPath &path)

virtual void	drawPoints (const QPointF *points, int pointCount)

virtual void	drawPoints (const QPoint *points, int pointCount)

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

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

virtual void	drawPixmap (const QRectF &r, const TextureEntity &pm, const QRectF &sr)=0

virtual void	drawTextItem (const QPointF &p, const CTextItem &textItem)

virtual void	drawImage (const QRectF &r, const ImageEntity &pm, const QRectF &sr)

void	setPaintDevice (CPaintDevice *device)

CPaintDevice *	paintDevice () const

void	setSystemClip (const QRegion &baseClip)

QRegion	systemClip () const

void	setSystemRect (const QRect &rect)

QRect	systemRect () const

virtual QPoint	coordinateOffset () const

bool	testDirty (DirtyFlags df)

void	setDirty (DirtyFlags df)

void	clearDirty (DirtyFlags df)

CPainter *	painter () const

virtual bool	IsScissorRectSupported () const

virtual bool	IsStencilSupported () const

virtual void	clip (const QRect &rect, ClipOperation op=ReplaceClip)

virtual void	SetUse3DTransform (bool bUse3DSpaceTransform)
	by default, transforms are in 2d screen space. More...

virtual bool	IsUse3DTransform ()
	return false by default. More...

virtual HRESULT	DrawRect (const RECT *rect, Color color, float depth)

virtual HRESULT	DrawQuad (TextureEntity pTexture, const RECT pSrcRect, const Vector3 vCenter, const Vector3 pPosition, Color c)

virtual HRESULT	drawText (SpriteFontEntity pFont, const char strText, int nCount, RECT *rect, DWORD dwTextFormat, DWORD textColor)

virtual HRESULT	drawText (SpriteFontEntity pFont, const char16_t strText, int nCount, RECT *rect, DWORD dwTextFormat, DWORD textColor)

Protected Attributes
CPaintDevice *	pdev

CPaintEngineState *	state

bool	active: 1

bool	selfDestruct: 1

bool	hasSystemTransform: 1

bool	hasSystemViewport: 1

QRegion	m_systemClip

QRect	m_systemRect

QRegion	systemViewport

QTransform	systemTransform

CPaintDevice *	currentClipDevice

Friends
class	CPainter

Detailed Description

The CPaintEngine class provides an abstract definition of how CPainter draws to a given device on a given platform.

If one wants to use CPainter to draw to a different backend, one must subclass CPaintEngine and reimplement all its virtual functions. The CPaintEngine implementation is then made available by subclassing QPaintDevice and reimplementing the virtual function CPaintDevice::paintEngine().

QPaintEngine is created and owned by the QPaintDevice that created it.

Note: : CPaintEngine is hidden from end users. The end user only needs to use CPainter to draw on a paint device.

Member Function Documentation

§ IsUse3DTransform()

virtual bool ParaEngine::CPaintEngine::IsUse3DTransform ( )

inlinevirtual

return false by default.

Reimplemented in ParaEngine::CPaintEngineGPU.

§ SetUse3DTransform()

virtual void ParaEngine::CPaintEngine::SetUse3DTransform ( bool bUse3DSpaceTransform )

inlinevirtual

by default, transforms are in 2d screen space.

However, we can also specify using 3d transform, such as when rendering GUI onto 3D scenes

Reimplemented in ParaEngine::CPaintEngineGPU.

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

Client/trunk/ParaEngineClient/PaintEngine/PaintEngine.h
Client/trunk/ParaEngineClient/PaintEngine/PaintEngine.cpp

Public Types

Public Member Functions

Protected Attributes

Friends

Detailed Description

Member Function Documentation

§ IsUse3DTransform()

§ SetUse3DTransform()