viewshape.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifndef INCLUDED_SLIDESHOW_SOURCE_ENGINE_SHAPES_VIEWSHAPE_HXX
#define INCLUDED_SLIDESHOW_SOURCE_ENGINE_SHAPES_VIEWSHAPE_HXX
 
#include <cppcanvas/renderer.hxx>
#include <cppcanvas/bitmap.hxx>
 
#include <basegfx/range/b2drectangle.hxx>
#include <o3tl/typed_flags_set.hxx>
 
#include <tools.hxx>
#include <shapeattributelayer.hxx>
#include <animatedsprite.hxx>
#include <viewlayer.hxx>
#include <doctreenode.hxx>
 
#include <vector>
#include <memory>
 
enum class UpdateFlags
{
    NONE           = 0x00,
    Transformation = 0x01,
    Clip           = 0x02,
    Alpha          = 0x04,
    Position       = 0x08,
    Content        = 0x10,
    Force          = 0x20,
};
namespace o3tl {
    template<> struct typed_flags<UpdateFlags> : is_typed_flags<UpdateFlags, 0x3f> {};
}
 
 
 
namespace slideshow::internal
    {
        class ViewShape
        {
        public:
            explicit ViewShape( ViewLayerSharedPtr xViewLayer );
 
            ViewShape(const ViewShape&) = delete;
            ViewShape& operator=(const ViewShape&) = delete;
 
            const ViewLayerSharedPtr& getViewLayer() const;
 
            ::basegfx::B2DSize getAntialiasingBorder() const;
 
 
            // animation methods
 
 
            void enterAnimationMode();
 
            void leaveAnimationMode();
 
 
            // render methods
 
 
            struct RenderArgs
            {
                RenderArgs( const ::basegfx::B2DRectangle&      rOrigBounds,
                            const ::basegfx::B2DRectangle&      rUpdateBounds,
                            const ::basegfx::B2DRectangle&      rBounds,
                            const ::basegfx::B2DRectangle&      rUnitBounds,
                            const ShapeAttributeLayerSharedPtr& rAttr,
                            const VectorOfDocTreeNodes&         rSubsets,
                            double                              nPrio ) :
                    maOrigBounds( rOrigBounds ),
                    maUpdateBounds( rUpdateBounds ),
                    maBounds( rBounds ),
                    maUnitBounds( rUnitBounds ),
                    mrAttr( rAttr ),
                    mrSubsets( rSubsets ),
                    mnShapePriority( nPrio )
                {
                }
 
                const ::basegfx::B2DRectangle       maOrigBounds;
                const ::basegfx::B2DRectangle       maUpdateBounds;
                const ::basegfx::B2DRectangle       maBounds;
                const ::basegfx::B2DRectangle       maUnitBounds;
                const ShapeAttributeLayerSharedPtr& mrAttr;
                const VectorOfDocTreeNodes&         mrSubsets;
                const double                        mnShapePriority;
            };
 
            bool update( const GDIMetaFileSharedPtr&    rMtf,
                         const RenderArgs&              rArgs,
                         UpdateFlags                    nUpdateFlags,
                         bool                           bIsVisible ) const;
 
            ::cppcanvas::RendererSharedPtr getRenderer( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas,
                                                        const GDIMetaFileSharedPtr&         rMtf,
                                                        const ShapeAttributeLayerSharedPtr& rAttr ) const;
 
 
        private:
            struct RendererCacheEntry
            {
                RendererCacheEntry() :
                    mpDestinationCanvas(),
                    mpRenderer(),
                    mpMtf(),
                    mpLastBitmap(),
                    mpLastBitmapCanvas()
                {
                }
 
                const ::cppcanvas::CanvasSharedPtr& getDestinationCanvas() const
                {
                    return mpDestinationCanvas;
                }
 
                ::cppcanvas::CanvasSharedPtr        mpDestinationCanvas;
                ::cppcanvas::RendererSharedPtr      mpRenderer;
                GDIMetaFileSharedPtr                mpMtf;
                ::cppcanvas::BitmapSharedPtr        mpLastBitmap;
                ::cppcanvas::BitmapCanvasSharedPtr  mpLastBitmapCanvas;
            };
 
            typedef ::std::vector< RendererCacheEntry > RendererCacheVector;
 
 
            static bool prefetch( RendererCacheEntry&                  io_rCacheEntry,
                           const ::cppcanvas::CanvasSharedPtr&  rDestinationCanvas,
                           const GDIMetaFileSharedPtr&          rMtf,
                           const ShapeAttributeLayerSharedPtr&  rAttr );
 
            bool draw( const ::cppcanvas::CanvasSharedPtr&  rDestinationCanvas,
                       const GDIMetaFileSharedPtr&          rMtf,
                       const ShapeAttributeLayerSharedPtr&  rAttr,
                       const ::basegfx::B2DHomMatrix&       rTransform,
                       const ::basegfx::B2DPolyPolygon*     pClip,
                       const VectorOfDocTreeNodes&          rSubsets ) const;
 
            bool renderSprite( const ViewLayerSharedPtr&            rViewLayer,
                               const GDIMetaFileSharedPtr&          rMtf,
                               const ::basegfx::B2DRectangle&       rOrigBounds,
                               const ::basegfx::B2DRectangle&       rBounds,
                               const ::basegfx::B2DRectangle&       rUnitBounds,
                               UpdateFlags                          nUpdateFlags,
                               const ShapeAttributeLayerSharedPtr&  pAttr,
                               const VectorOfDocTreeNodes&          rSubsets,
                               double                               nPrio,
                               bool                                 bIsVisible ) const;
 
            bool render( const ::cppcanvas::CanvasSharedPtr&    rDestinationCanvas,
                         const GDIMetaFileSharedPtr&            rMtf,
                         const ::basegfx::B2DRectangle&         rBounds,
                         const ::basegfx::B2DRectangle&         rUpdateBounds,
                         UpdateFlags                            nUpdateFlags,
                         const ShapeAttributeLayerSharedPtr&    pAttr,
                         const VectorOfDocTreeNodes&            rSubsets,
                         bool                                   bIsVisible ) const;
 
            enum{ MAX_RENDER_CACHE_ENTRIES=2 };
 
            RendererCacheVector::iterator getCacheEntry( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas ) const;
 
            void invalidateRenderer() const;
 
            ViewLayerSharedPtr                          mpViewLayer;
 
            mutable RendererCacheVector                 maRenderers;
 
            mutable AnimatedSpriteSharedPtr             mpSprite;
 
            mutable bool                                mbAnimationMode;
 
            mutable bool                                mbForceUpdate;
        };
 
        typedef ::std::shared_ptr< ViewShape > ViewShapeSharedPtr;
 
}
 
#endif // INCLUDED_SLIDESHOW_SOURCE_ENGINE_SHAPES_VIEWSHAPE_HXX
 
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