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 #pragma once
21 
22 #include <basegfx/vector/b2isize.hxx>
23 #include <rendering/irendermodule.hxx>
24 
25 #include "page.hxx"
26 
27 namespace canvas
28 {
29     // PageManager
30     class PageManager
31     {
32     public:
PageManager(const std::shared_ptr<canvas::IRenderModule> & rRenderModule)33         explicit PageManager(const std::shared_ptr<canvas::IRenderModule>& rRenderModule)
34             : mpRenderModule(rRenderModule)
35         {
36         }
37 
38         // returns the maximum size of a hardware
39         // accelerated page, e.g. OpenGL texture.
40         ::basegfx::B2ISize getPageSize() const;
41 
getRenderModule() const42         const std::shared_ptr<canvas::IRenderModule>& getRenderModule() const { return mpRenderModule; }
43 
44         FragmentSharedPtr allocateSpace( const ::basegfx::B2ISize& rSize );
45         void              free( const FragmentSharedPtr& pFragment );
46 
47         void              nakedFragment( const FragmentSharedPtr& pFragment );
48 
49         void              validatePages();
50 
51     private:
52         // the pagemanager needs access to the rendermodule
53         // since we query for system resources from it.
54         std::shared_ptr<canvas::IRenderModule> mpRenderModule;
55 
56         // here we collect all fragments that will be created
57         // since we need them for relocation purposes.
58         typedef std::vector<FragmentSharedPtr> FragmentContainer_t;
59         FragmentContainer_t maFragments;
60 
61         // this is the container holding all created pages,
62         // behind the scenes these are real hardware surfaces.
63         std::vector<PageSharedPtr> maPages;
64 
65         bool relocate( const FragmentSharedPtr& pFragment );
66     };
67 
68 
69     // PageManagerSharedPtr
70 
71 
72     typedef std::shared_ptr< PageManager > PageManagerSharedPtr;
73 }
74 
75 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
76