Quelle  overlaymanager.hxx

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#ifndef INCLUDED_SVX_SDR_OVERLAY_OVERLAYMANAGER_HXX
#define INCLUDED_SVX_SDR_OVERLAY_OVERLAYMANAGER_HXX

#include <rtl/ref.hxx>
#include <svx/sdr/animation/scheduler.hxx>
#include <svx/sdr/overlay/overlayobject.hxx>
#include <tools/color.hxx>
#include <tools/gen.hxx>
#include <svx/svxdllapi.h>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <salhelper/simplereferenceobject.hxx>

class OutputDevice;
namespace vcl { class Region; }

namespace basegfx {
    class B2DRange;
}

namespace sdr::overlay
    {
        class SVXCORE_DLLPUBLIC OverlayManager
            : protected sdr::animation::Scheduler
            , public salhelper::SimpleReferenceObject
        {
        private:
            OverlayManager(const OverlayManager&) = delete;
            OverlayManager& operator=(const OverlayManager&) = delete;

        protected:
            // the OutputDevice to work on, set on construction and not to be changed
            OutputDevice&                               mrOutputDevice;

            // the vector of registered OverlayObjects
            OverlayObjectVector                         maOverlayObjects;

            // Stripe support. All striped OverlayObjects use these stripe
            // values. Changes change all those objects.
            Color                                       maStripeColorA; // defaults to COL_BLACK
            Color                                       maStripeColorB; // defaults to COL_WHITE
            sal_uInt32                                  mnStripeLengthPixel; // defaults to 4L

            // hold buffered the logic length of discrete vector (1.0, 0.0) and the
            // view transformation belonging to it. Update happens in getDiscreteOne()
            basegfx::B2DHomMatrix                       maViewTransformation;
            drawinglayer::geometry::ViewInformation2D   maViewInformation2D;
            double                                      mfDiscreteOne;

            // internal
            void ImpDrawMembers(const basegfx::B2DRange& rRange, OutputDevice& rDestinationDevice) const;
            void ImpStripeDefinitionChanged();
            void impApplyRemoveActions(OverlayObject& rTarget);
            void impApplyAddActions(OverlayObject& rTarget);

            // return mfDiscreteOne to derivations, but also check for buffered local
            // ViewTransformation and evtl. correct mfDiscreteOne
            double getDiscreteOne() const;

            tools::Rectangle RangeToInvalidateRectangle(const basegfx::B2DRange& rRange) const;

            OverlayManager(OutputDevice& rOutputDevice);
            virtual ~OverlayManager() override;

        public:
            static rtl::Reference<OverlayManager> create(OutputDevice& rOutputDevice);

            // access to current ViewInformation2D; this call checks and evtl. updates ViewInformation2D
            drawinglayer::geometry::ViewInformation2D const & getCurrentViewInformation2D() const;

            // complete redraw
            virtual void completeRedraw(const vcl::Region& rRegion, OutputDevice* pPreRenderDevice = nullptr) const;

            // get the OutputDevice
            OutputDevice& getOutputDevice() const { return mrOutputDevice; }

            // add and remove OverlayObjects
            void add(OverlayObject& rOverlayObject);
            void remove(OverlayObject& rOverlayObject);

            // invalidate the given range at local OutputDevice
            virtual void invalidateRange(const basegfx::B2DRange& rRange);

            // stripe support ColA
            const Color& getStripeColorA() const { return maStripeColorA; }
            void setStripeColorA(Color aNew);

            // stripe support ColB
            const Color& getStripeColorB() const { return maStripeColorB; }
            void setStripeColorB(Color aNew);

            // stripe support StripeLengthPixel
            sal_uInt32 getStripeLengthPixel() const { return mnStripeLengthPixel; }
            void setStripeLengthPixel(sal_uInt32 nNew);

            void InsertEvent(sdr::animation::Event& rNew) { Scheduler::InsertEvent(rNew); }
        };

} // end of namespace sdr::overlay

#endif // INCLUDED_SVX_SDR_OVERLAY_OVERLAYMANAGER_HXX

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