canvas/source/tools/pagemanager.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
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  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_SOURCE_TOOLS_PAGEMANAGER_HXX
  21 #define INCLUDED_CANVAS_SOURCE_TOOLS_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     // PageManager
  32     class PageManager
  33     {
  34     public:
  35         PageManager(const canvas::IRenderModuleSharedPtr& rRenderModule)
  36             : mpRenderModule(rRenderModule)
  37         {
  38         }
  39
  40         // returns the maximum size of a hardware
  41         // accelerated page, e.g. OpenGL texture.
  42         ::basegfx::B2ISize getPageSize() const;
  43
  44         canvas::IRenderModuleSharedPtr getRenderModule() const { return mpRenderModule; }
  45
  46         FragmentSharedPtr allocateSpace( const ::basegfx::B2ISize& rSize );
  47         void              free( const FragmentSharedPtr& pFragment );
  48
  49         void              nakedFragment( const FragmentSharedPtr& pFragment );
  50
  51         void              validatePages();
  52
  53     private:
  54         // the pagemanager needs access to the rendermodule
  55         // since we query for system resources from it.
  56         canvas::IRenderModuleSharedPtr mpRenderModule;
  57
  58         // here we collect all fragments that will be created
  59         // since we need them for relocation purposes.
  60         typedef std::list<FragmentSharedPtr> FragmentContainer_t;
  61         FragmentContainer_t maFragments;
  62
  63         // this is the container holding all created pages,
  64         // behind the scenes these are real hardware surfaces.
  65         typedef std::list<PageSharedPtr> PageContainer_t;
  66         PageContainer_t maPages;
  67
  68         bool relocate( const FragmentSharedPtr& pFragment );
  69     };
  70
  71
  72     // PageManagerSharedPtr
  73
  74
  75     typedef ::boost::shared_ptr< PageManager > PageManagerSharedPtr;
  76 }
  77
  78 #endif
  79
  80 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */