layer.hxx

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#ifndef INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_LAYER_HXX
#define INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_LAYER_HXX
 
#include <basegfx/range/b2dpolyrange.hxx>
 
#include <shape.hxx>
#include <utility>
#include <view.hxx>
 
#include <vector>
#include <memory>
 
 
namespace slideshow::internal
    {
        class LayerEndUpdate;
        class Layer;
        typedef ::std::shared_ptr< Layer >    LayerSharedPtr;
        typedef ::std::weak_ptr< Layer >      LayerWeakPtr;
 
 
        /* Definition of Layer class */
 
        class Layer : public std::enable_shared_from_this<Layer>
        {
        public:
            typedef std::shared_ptr<LayerEndUpdate> EndUpdater;
 
            Layer(const Layer&) = delete;
            Layer& operator=(const Layer&) = delete;
 
            static LayerSharedPtr createBackgroundLayer();
 
            static LayerSharedPtr createLayer();
 
 
            bool isBackgroundLayer() const { return mbBackgroundLayer; }
 
            ViewLayerSharedPtr addView( const ViewSharedPtr& rNewView );
 
            ViewLayerSharedPtr removeView( const ViewSharedPtr& rView );
 
            void setShapeViews( ShapeSharedPtr const& rShape ) const;
 
 
            void setPriority( const ::basegfx::B1DRange& rPrioRange );
 
            void addUpdateRange( ::basegfx::B2DRange const& rUpdateRange );
 
            bool isUpdatePending() const { return maUpdateAreas.count()!=0; }
 
            void updateBounds( ShapeSharedPtr const& rShape );
 
            bool commitBounds();
 
            void clearUpdateRanges();
 
            void clearContent();
 
            EndUpdater beginUpdate();
 
            void endUpdate();
 
            bool isInsideUpdateArea( ShapeSharedPtr const& rShape ) const;
 
        private:
            enum Dummy{ BackgroundLayer };
 
            explicit Layer( Dummy                    eFlag );
 
            explicit Layer();
 
            struct ViewEntry
            {
                ViewEntry( ViewSharedPtr       xView,
                           ViewLayerSharedPtr  xViewLayer ) :
                    mpView(std::move( xView )),
                    mpViewLayer(std::move( xViewLayer ))
                {}
 
                ViewSharedPtr      mpView;
                ViewLayerSharedPtr mpViewLayer;
 
                // for generic algo access (which needs actual functions)
                const ViewSharedPtr&      getView() const { return mpView; }
                const ViewLayerSharedPtr& getViewLayer() const { return mpViewLayer; }
            };
 
            typedef ::std::vector< ViewEntry > ViewEntryVector;
 
            ViewEntryVector            maViewEntries;
            basegfx::B2DPolyRange      maUpdateAreas;
            basegfx::B2DRange          maBounds;
            basegfx::B2DRange          maNewBounds;
            bool                       mbBoundsDirty;     // true, if view layers need resize
            bool                       mbBackgroundLayer; // true, if this
                                                          // layer is the
                                                          // special
                                                          // background layer
            bool                       mbClipSet; // true, if beginUpdate set a clip
        };
 
}
 
#endif // INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_LAYER_HXX
 
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