DVOffscreenGraphicsContext Class Reference

#include <DVOffscreenGraphicsContext.h>

Inheritance diagram for DVOffscreenGraphicsContext:

Public Member Functions
	DVOffscreenGraphicsContext (IViewPort *viewPort, const PMMatrix &toWindowMatrix, IControlView *iView, SysRgn clipRgnInWinCoords=nil)
virtual SysRgn	GetClip () const
virtual SysRgn	GetOriginAdjustedClip () const
virtual SysPort	GetSysPort () const
virtual IViewPort *	GetViewPort () const
virtual const PMMatrix &	GetContentToViewTransform () const
virtual const PMMatrix &	GetViewToContentTransform () const
virtual IControlView *	GetView () const
bool16	IsCurrent () const
virtual dvaui::drawbot::Drawbot *	GetDrawbot () const

Detailed Description

DVOffscreenGraphicsContext is a Drover based implementation for IGraphicsContext. IGraphicsContext is a data container interface which is passed into drawing code, the DVOffscreenGraphicsContext is a wrapper around DVOffscreenPortData. It contains the target viewport, transform, and cliprgn for drawing. It not a Shuksan object model interface, but simply an abstract interface from which implementation classes derive. It is being used from DVLayoutControlView (droverized layout widget).

See Also

DVLayoutControlView

DVOffscreenPortData

IControlView

Member Function Documentation

virtual SysRgn DVOffscreenGraphicsContext::GetClip ( ) const

virtual

Gets the clipping region for this context

Returns

the clipping region as a SysRgn

Implements IGraphicsContext.

virtual const PMMatrix& DVOffscreenGraphicsContext::GetContentToViewTransform ( ) const

virtual

Gets the transform matrix for this context

See Also

PMMatrix

IGraphicsContext::GetInverseTransform

Returns

the transform matrix

Implements IGraphicsContext.

virtual dvaui::drawbot::Drawbot* DVOffscreenGraphicsContext::GetDrawbot ( ) const

virtual

Gets the Drawbot for this context

Returns

the Drawbot*

Implements IGraphicsContext.

virtual SysRgn DVOffscreenGraphicsContext::GetOriginAdjustedClip ( ) const

virtual

Gets the origin-adjusted clipping region for this context

Returns

the origin-adjusted clipping region as a SysRgn

Implements IGraphicsContext.

virtual SysPort DVOffscreenGraphicsContext::GetSysPort ( ) const

virtual

Obsolete don't use

It will cause an assert when called

Implements IGraphicsContext.

virtual IControlView* DVOffscreenGraphicsContext::GetView ( ) const

virtual

Gets the control view for this context

See Also

IControlView

Returns

the control view

Implements IGraphicsContext.

virtual IViewPort* DVOffscreenGraphicsContext::GetViewPort ( ) const

virtual

Gets the view port for this context

See Also

IViewPort

Returns

the view port

Implements IGraphicsContext.

virtual const PMMatrix& DVOffscreenGraphicsContext::GetViewToContentTransform ( ) const

virtual

Gets the inverse transform matrix for this context

See Also

PMMatrix

IGraphicsContext::GetTransform

Returns

the inverse transform matrix

Implements IGraphicsContext.

bool16 DVOffscreenGraphicsContext::IsCurrent ( ) const

virtual

Returns kTrue if this context is current, else kFalse

See Also

IGraphicsContextArbitrator

Returns

whether this context is current

Implements IGraphicsContext.