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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /canvas/source/tools/page.hxx | |
parent | Initial commit. (diff) | |
download | libreoffice-upstream.tar.xz libreoffice-upstream.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | canvas/source/tools/page.hxx | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/canvas/source/tools/page.hxx b/canvas/source/tools/page.hxx new file mode 100644 index 000000000..14fa17c53 --- /dev/null +++ b/canvas/source/tools/page.hxx @@ -0,0 +1,147 @@ +/* -*- 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 <basegfx/vector/b2isize.hxx> +#include <basegfx/range/b2irectangle.hxx> +#include <rendering/icolorbuffer.hxx> +#include <rendering/irendermodule.hxx> +#include <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; + }; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |