/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project .
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License , v . 2 . 0 . If a copy of the MPL was not distributed with this
* file , You can obtain one at http : //mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice :
*
* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership . The ASF licenses this file to you under the Apache
* License , Version 2 . 0 ( the " License " ) ; you may not use this file
* except in compliance with the License . You may obtain a copy of
* the License at http : //www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <canvas/canvastoolsdllapi.h>
#include <memory>
namespace canvas
{
struct ISurfaceProxy;
struct IColorBuffer;
struct IRenderModule;
/** Manager interface, which handles surface proxy objects.
Typically , each canvas instantiation has one
SurfaceProxyManager object , to handle their surfaces . Surfaces
itself are opaque objects , which encapsulate a framebuffer to
render upon , plus an optional ( possibly accelerated ) texture .
*/
struct ISurfaceProxyManager
{
virtual ~ISurfaceProxyManager() {}
/** Create a surface proxy for a color buffer.
The whole idea is build around the concept that you create
some arbitrary buffer which contains the image data and
tell the texture manager about it . From there on you can
draw into this image using any kind of graphics api you
want . In the technical sense we allocate some space in
local videomemory or AGP memory which will be filled on
demand , which means if there exists any rendering
operation that needs to read from this memory location .
This method creates a logical hardware surface object
which uses the given color buffer as the image source .
Internally this texture may even be distributed to several
real hardware surfaces .
*/
virtual std::shared_ptr< ISurfaceProxy > createSurfaceProxy(
const std::shared_ptr<IColorBuffer>& pBuffer ) const = 0 ;
};
/** Create a surface proxy for the given render module.
*/
CANVASTOOLS_DLLPUBLIC std::shared_ptr<ISurfaceProxyManager> createSurfaceProxyManager( const std::shared_ptr<IRenderModule>& rRenderModule );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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(vorverarbeitet am 2026-09-28)
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