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/* -*- 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 .
*/
#ifndef INCLUDED_CANVAS_SOURCE_TOOLS_PAGE_HXX
#define INCLUDED_CANVAS_SOURCE_TOOLS_PAGE_HXX
#include <basegfx/vector/b2isize.hxx>
#include <basegfx/range/b2irectangle.hxx>
#include <canvas/rendering/icolorbuffer.hxx>
#include <canvas/rendering/irendermodule.hxx>
#include <canvas/rendering/isurface.hxx>
#include <memory>
#include <vector>
#include "surfacerect.hxx"
namespace canvas
{
class PageFragment;
typedef std::shared_ptr< PageFragment > FragmentSharedPtr;
/** One page of IRenderModule-provided texture space
*/
class Page
{
public:
explicit Page( const std::shared_ptr<IRenderModule>& rRenderModule );
FragmentSharedPtr allocateSpace( const ::basegfx::B2ISize& rSize );
bool nakedFragment( const FragmentSharedPtr& pFragment );
void free( const FragmentSharedPtr& pFragment );
const std::shared_ptr<ISurface>& getSurface() const { return mpSurface; }
bool isValid() const;
void validate();
private:
typedef std::vector<FragmentSharedPtr> FragmentContainer_t;
std::shared_ptr<IRenderModule> mpRenderModule;
std::shared_ptr<ISurface> mpSurface;
FragmentContainer_t mpFragments;
bool insert( SurfaceRect& r );
bool isValidLocation( const SurfaceRect& r ) const;
};
typedef std::shared_ptr< Page > PageSharedPtr;
/** A part of a page, which gets allocated to a surface
*/
class PageFragment
{
public:
PageFragment( const SurfaceRect& r,
Page* pPage ) :
mpPage(pPage),
maRect(r),
mpBuffer(),
maSourceOffset()
{
}
/// Creates a 'naked' fragment.
explicit PageFragment( const ::basegfx::B2ISize& rSize ) :
mpPage(nullptr),
maRect(rSize),
mpBuffer(),
maSourceOffset()
{
}
bool isNaked() const { return (mpPage == nullptr); }
const SurfaceRect& getRect() const { return maRect; }
const ::basegfx::B2IPoint& getPos() const { return maRect.maPos; }
const ::basegfx::B2ISize& getSize() const { return maRect.maSize; }
void setColorBuffer( const std::shared_ptr<IColorBuffer>& pColorBuffer ) { mpBuffer=pColorBuffer; }
void setSourceOffset( const ::basegfx::B2IPoint& rOffset ) { maSourceOffset=rOffset; }
void setPage( Page* pPage ) { mpPage=pPage; }
void free( const FragmentSharedPtr& pFragment )
{
if(mpPage)
mpPage->free(pFragment);
mpPage=nullptr;
}
bool select( bool bRefresh )
{
// request was made to select this fragment,
// but this fragment has not been located on any
// of the available pages, we need to hurry now.
if(!mpPage)
return false;
std::shared_ptr<ISurface> pSurface(mpPage->getSurface());
// select this surface before wiping the contents
// since a specific implementation could trigger
// a rendering operation here...
if(!(pSurface->selectTexture()))
return false;
// call refresh() if requested, otherwise we're up to date...
return !bRefresh || refresh();
}
bool refresh()
{
if(!mpPage)
return false;
std::shared_ptr<ISurface> pSurface(mpPage->getSurface());
return pSurface->update( maRect.maPos,
::basegfx::B2IRectangle(
maSourceOffset,
maSourceOffset + maRect.maSize ),
*mpBuffer );
}
private:
Page* mpPage;
SurfaceRect maRect;
std::shared_ptr<IColorBuffer> mpBuffer;
::basegfx::B2IPoint maSourceOffset;
};
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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