canvas/source/tools/pagemanager.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_CANVAS_PAGEMANAGER_HXX
  21 #define INCLUDED_CANVAS_PAGEMANAGER_HXX
  22
  23 #include <basegfx/vector/b2isize.hxx>
  24 #include <canvas/rendering/irendermodule.hxx>
  25 #include <canvas/rendering/isurface.hxx>
  26
  27 #include "page.hxx"
  28
  29 namespace canvas
  30 {
  31
  32     //////////////////////////////////////////////////////////////////////////////////
  33     // PageManager
  34     //////////////////////////////////////////////////////////////////////////////////
  35
  36     class PageManager
  37     {
  38     public:
  39         PageManager( const canvas::IRenderModuleSharedPtr pRenderModule ) :
  40             mpRenderModule(pRenderModule)
  41         {
  42         }
  43
  44         // returns the maximum size of a hardware
  45         // accelerated page, e.g. OpenGL texture.
  46         ::basegfx::B2ISize getPageSize() const;
  47
  48         canvas::IRenderModuleSharedPtr getRenderModule() const;
  49
  50         FragmentSharedPtr allocateSpace( const ::basegfx::B2ISize& rSize );
  51         void              free( const FragmentSharedPtr& pFragment );
  52
  53         void              nakedFragment( const FragmentSharedPtr& pFragment );
  54
  55         void              validatePages();
  56
  57     private:
  58         // the pagemanager needs access to the rendermodule
  59         // since we query for system resources from it.
  60         canvas::IRenderModuleSharedPtr mpRenderModule;
  61
  62         // here we collect all fragments that will be created
  63         // since we need them for relocation purposes.
  64         typedef std::list<FragmentSharedPtr> FragmentContainer_t;
  65         FragmentContainer_t maFragments;
  66
  67         // this is the container holding all created pages,
  68         // behind the scenes these are real hardware surfaces.
  69         typedef std::list<PageSharedPtr> PageContainer_t;
  70         PageContainer_t maPages;
  71
  72         bool relocate( const FragmentSharedPtr& pFragment );
  73     };
  74
  75     //////////////////////////////////////////////////////////////////////////////////
  76     // PageManagerSharedPtr
  77     //////////////////////////////////////////////////////////////////////////////////
  78
  79     typedef ::boost::shared_ptr< PageManager > PageManagerSharedPtr;
  80 }
  81
  82 #endif
  83
  84 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */