Implementers of this interface provide the CanvasHelper with its OutputDevice. More...

#include <outdevprovider.hxx>

Inheritance diagram for vclcanvas::OutDevProvider:

Public Member Functions
virtual	~OutDevProvider ()

virtual OutputDevice &	getOutDev ()=0

virtual const OutputDevice &	getOutDev () const =0

Detailed Description

Implementers of this interface provide the CanvasHelper with its OutputDevice.

This additional level of indirection was necessary, as the OutputDevice is not an interface. There had to be a mechanism to detect the moment when an OutputDevice is rendered to (e.g. for the BitmapBackBuffer).

Definition at line 38 of file outdevprovider.hxx.

Constructor & Destructor Documentation

◆ ~OutDevProvider()

virtual vclcanvas::OutDevProvider::~OutDevProvider ( )

inlinevirtual

Definition at line 41 of file outdevprovider.hxx.

Member Function Documentation

◆ getOutDev() [1/2]

virtual const OutputDevice & vclcanvas::OutDevProvider::getOutDev ( ) const

pure virtual

Implemented in vclcanvas::BackBuffer, vclcanvas::BitmapBackBuffer, vclcanvas::OutDevHolder, and vclcanvas::WindowOutDevHolder.

◆ getOutDev() [2/2]

virtual OutputDevice & vclcanvas::OutDevProvider::getOutDev ( )