xref: /trunk/main/canvas/source/tools/pagemanager.hxx (revision 91c99ff4)
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21 
22 
23 
24 #ifndef INCLUDED_CANVAS_PAGEMANAGER_HXX
25 #define INCLUDED_CANVAS_PAGEMANAGER_HXX
26 
27 #include <basegfx/vector/b2isize.hxx>
28 #include <canvas/rendering/irendermodule.hxx>
29 #include <canvas/rendering/isurface.hxx>
30 
31 #include "page.hxx"
32 
33 namespace canvas
34 {
35 
36 	//////////////////////////////////////////////////////////////////////////////////
37 	// PageManager
38 	//////////////////////////////////////////////////////////////////////////////////
39 
40 	class PageManager
41 	{
42     public:
PageManager(const canvas::IRenderModuleSharedPtr pRenderModule)43         PageManager( const canvas::IRenderModuleSharedPtr pRenderModule ) :
44             mpRenderModule(pRenderModule)
45         {
46         }
47 
48         // returns the maximum size of a hardware
49         // accelerated page, e.g. OpenGL texture.
50         ::basegfx::B2ISize getPageSize() const;
51 
52         canvas::IRenderModuleSharedPtr getRenderModule() const;
53 
54         FragmentSharedPtr allocateSpace( const ::basegfx::B2ISize& rSize );
55         void              free( const FragmentSharedPtr& pFragment );
56 
57         void              nakedFragment( const FragmentSharedPtr& pFragment );
58 
59         void              validatePages();
60 
61     private:
62         // the pagemanager needs access to the rendermodule
63         // since we query for system resources from it.
64         canvas::IRenderModuleSharedPtr mpRenderModule;
65 
66         // here we collect all fragments that will be created
67         // since we need them for relocation purposes.
68         typedef std::list<FragmentSharedPtr> FragmentContainer_t;
69         FragmentContainer_t maFragments;
70 
71         // this is the container holding all created pages,
72         // behind the scenes these are real hardware surfaces.
73         typedef std::list<PageSharedPtr> PageContainer_t;
74         PageContainer_t maPages;
75 
76         bool relocate( const FragmentSharedPtr& pFragment );
77 	};
78 
79 	//////////////////////////////////////////////////////////////////////////////////
80 	// PageManagerSharedPtr
81 	//////////////////////////////////////////////////////////////////////////////////
82 
83     typedef ::boost::shared_ptr< PageManager > PageManagerSharedPtr;
84 
85 	//////////////////////////////////////////////////////////////////////////////////
86 	// End of file
87 	//////////////////////////////////////////////////////////////////////////////////
88 }
89 
90 #endif
91