152 lines
5.0 KiB
C++
152 lines
5.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_CANVAS_SOURCE_TOOLS_PAGE_HXX
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#define INCLUDED_CANVAS_SOURCE_TOOLS_PAGE_HXX
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#include <basegfx/vector/b2isize.hxx>
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#include <basegfx/range/b2irectangle.hxx>
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#include <canvas/rendering/icolorbuffer.hxx>
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#include <canvas/rendering/irendermodule.hxx>
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#include <canvas/rendering/isurface.hxx>
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#include <list>
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#include <vector>
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#include <boost/shared_ptr.hpp>
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#include "surfacerect.hxx"
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namespace canvas
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{
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class PageFragment;
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typedef ::boost::shared_ptr< PageFragment > FragmentSharedPtr;
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/** One page of IRenderModule-provided texture space
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*/
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class Page
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{
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public:
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Page( const IRenderModuleSharedPtr& rRenderModule );
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FragmentSharedPtr allocateSpace( const ::basegfx::B2ISize& rSize );
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bool nakedFragment( const FragmentSharedPtr& pFragment );
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void free( const FragmentSharedPtr& pFragment );
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const ISurfaceSharedPtr& getSurface() const { return mpSurface; }
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bool isValid() const;
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void validate();
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private:
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typedef std::list<FragmentSharedPtr> FragmentContainer_t;
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IRenderModuleSharedPtr mpRenderModule;
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ISurfaceSharedPtr mpSurface;
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FragmentContainer_t mpFragments;
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bool insert( SurfaceRect& r );
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bool isValidLocation( const SurfaceRect& r ) const;
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};
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typedef ::boost::shared_ptr< Page > PageSharedPtr;
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/** A part of a page, which gets allocated to a surface
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*/
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class PageFragment
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{
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public:
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PageFragment( const SurfaceRect& r,
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Page* pPage ) :
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mpPage(pPage),
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maRect(r),
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mpBuffer(),
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maSourceOffset()
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{
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}
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/// Creates a 'naked' fragment.
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PageFragment( const ::basegfx::B2ISize& rSize ) :
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mpPage(NULL),
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maRect(rSize),
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mpBuffer(),
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maSourceOffset()
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{
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}
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bool isNaked() const { return (mpPage == NULL); }
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const SurfaceRect& getRect() const { return maRect; }
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const ::basegfx::B2IPoint& getPos() const { return maRect.maPos; }
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const ::basegfx::B2ISize& getSize() const { return maRect.maSize; }
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void setColorBuffer( const IColorBufferSharedPtr& pColorBuffer ) { mpBuffer=pColorBuffer; }
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void setSourceOffset( const ::basegfx::B2IPoint& rOffset ) { maSourceOffset=rOffset; }
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void setPage( Page* pPage ) { mpPage=pPage; }
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void free( const FragmentSharedPtr& pFragment )
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{
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if(mpPage)
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mpPage->free(pFragment);
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mpPage=NULL;
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}
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bool select( bool bRefresh )
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{
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// request was made to select this fragment,
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// but this fragment has not been located on any
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// of the available pages, we need to hurry now.
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if(!(mpPage))
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return false;
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ISurfaceSharedPtr pSurface(mpPage->getSurface());
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// select this surface before wiping the contents
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// since a specific implementation could trigger
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// a rendering operation here...
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if(!(pSurface->selectTexture()))
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return false;
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// call refresh() if requested, otherwise we're up to date...
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return bRefresh ? refresh() : true;
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}
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bool refresh()
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{
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if(!(mpPage))
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return false;
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ISurfaceSharedPtr pSurface(mpPage->getSurface());
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return pSurface->update( maRect.maPos,
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::basegfx::B2IRectangle(
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maSourceOffset,
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maSourceOffset + maRect.maSize ),
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*mpBuffer );
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}
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private:
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Page* mpPage;
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SurfaceRect maRect;
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IColorBufferSharedPtr mpBuffer;
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::basegfx::B2IPoint maSourceOffset;
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};
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}
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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