AOO410/main/drawinglayer/inc/drawinglayer/primitive2d/controlprimitive2d.hxx

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#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_CONTROLPRIMITIVE2D_HXX
#define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_CONTROLPRIMITIVE2D_HXX

#include <drawinglayer/drawinglayerdllapi.h>
#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <com/sun/star/awt/XControlModel.hpp>
#include <com/sun/star/awt/XControl.hpp>

//////////////////////////////////////////////////////////////////////////////

namespace drawinglayer
{
	namespace primitive2d
	{
        /** ControlPrimitive2D class

            Base class for ControlPrimitive handling. It decoposes to a
            graphical representation (Bitmap data) of the control. This
            representation is limited to a quadratic pixel maximum defined
            in the applicatin settings.
         */
		class DRAWINGLAYER_DLLPUBLIC ControlPrimitive2D : public BufferedDecompositionPrimitive2D
		{
		private:
			/// object's base data
			basegfx::B2DHomMatrix													maTransform;
			com::sun::star::uno::Reference< com::sun::star::awt::XControlModel >	mxControlModel;

			/// the created an cached awt::XControl
			com::sun::star::uno::Reference< com::sun::star::awt::XControl >			mxXControl;

			/// the last used scaling, used from getDecomposition for buffering
			basegfx::B2DVector														maLastViewScaling;

			/** used from getXControl() to create a local awt::XControl which is remembered in mxXControl
			    and from thereon always used and returned by getXControl()
             */
			void createXControl();

			/// single local decompositions, used from create2DDecomposition()
			Primitive2DReference createBitmapDecomposition(const geometry::ViewInformation2D& rViewInformation) const;
			Primitive2DReference createPlaceholderDecomposition(const geometry::ViewInformation2D& rViewInformation) const;

		protected:
			/// local decomposition
			virtual Primitive2DSequence create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const;

		public:
            /// constructor
			ControlPrimitive2D(
				const basegfx::B2DHomMatrix& rTransform, 
				const com::sun::star::uno::Reference< com::sun::star::awt::XControlModel >& rxControlModel);

			/** constructor with an additional XControl as parameter to allow to hand it over at incarnation time
			    if it exists. This will avoid to create a 2nd one on demand in createXControl()
			    and thus double the XControls.
             */
			ControlPrimitive2D(
				const basegfx::B2DHomMatrix& rTransform, 
				const com::sun::star::uno::Reference< com::sun::star::awt::XControlModel >& rxControlModel,
				const com::sun::star::uno::Reference< com::sun::star::awt::XControl >& rxXControl);

			/// data read access
			const basegfx::B2DHomMatrix& getTransform() const { return maTransform; }
			const com::sun::star::uno::Reference< com::sun::star::awt::XControlModel >& getControlModel() const { return mxControlModel; }

			/** mxControl access. This will on demand create the awt::XControl using createXControl()
			    if it does not exist. It may already have been created or even handed over at
			    incarnation
             */
			const com::sun::star::uno::Reference< com::sun::star::awt::XControl >& getXControl() const;

			/// compare operator
			virtual bool operator==(const BasePrimitive2D& rPrimitive) const;

			/// get range
			virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const;

			/// provide unique ID
			DeclPrimitrive2DIDBlock()

			/// Overload standard getDecomposition call to be view-dependent here
			virtual Primitive2DSequence get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const;
		};
	} // end of namespace primitive2d
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////

#endif // INCLUDED_DRAWINGLAYER_PRIMITIVE2D_CONTROLPRIMITIVE2D_HXX

//////////////////////////////////////////////////////////////////////////////
// eof