xref: /aoo4110/main/canvas/source/cairo/cairo_textlayout.hxx (revision b1cdbd2c)

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#ifndef _CAIROCANVAS_TEXTLAYOUT_HXX
#define _CAIROCANVAS_TEXTLAYOUT_HXX

#include <cppuhelper/compbase2.hxx>
#include <comphelper/broadcasthelper.hxx>

#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/rendering/XTextLayout.hpp>

#include <basegfx/vector/b2isize.hxx>

#include <vcl/outdev.hxx>

#include <boost/utility.hpp>

#include "cairo_cairo.hxx"
#include "cairo_canvasfont.hxx"


/* Definition of TextLayout class */

namespace cairocanvas
{
    typedef ::cppu::WeakComponentImplHelper2< ::com::sun::star::rendering::XTextLayout,
                         					  ::com::sun::star::lang::XServiceInfo > TextLayout_Base;

    class TextLayout : public ::comphelper::OBaseMutex,
                       public TextLayout_Base,
                       private ::boost::noncopyable
    {
    public:
        TextLayout( const ::com::sun::star::rendering::StringContext& aText,
                    sal_Int8                                          nDirection,
                    sal_Int64                                         nRandomSeed,
                    const CanvasFont::Reference&                      rFont,
					const SurfaceProviderRef&	                      rRefDevice );

        /// Dispose all internal references
        virtual void SAL_CALL disposing();

        // XTextLayout
        virtual ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XPolyPolygon2D > > SAL_CALL queryTextShapes(  ) throw (::com::sun::star::uno::RuntimeException);
        virtual ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealRectangle2D > SAL_CALL queryInkMeasures(  ) throw (::com::sun::star::uno::RuntimeException);
        virtual ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealRectangle2D > SAL_CALL queryMeasures(  ) throw (::com::sun::star::uno::RuntimeException);
        virtual ::com::sun::star::uno::Sequence< double > SAL_CALL queryLogicalAdvancements(  ) throw (::com::sun::star::uno::RuntimeException);
        virtual void SAL_CALL applyLogicalAdvancements( const ::com::sun::star::uno::Sequence< double >& aAdvancements ) throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::uno::RuntimeException);
        virtual ::com::sun::star::geometry::RealRectangle2D SAL_CALL queryTextBounds(  ) throw (::com::sun::star::uno::RuntimeException);
        virtual double SAL_CALL justify( double nSize ) throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::uno::RuntimeException);
        virtual double SAL_CALL combinedJustify( const ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XTextLayout > >& aNextLayouts, double nSize ) throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::uno::RuntimeException);
        virtual ::com::sun::star::rendering::TextHit SAL_CALL getTextHit( const ::com::sun::star::geometry::RealPoint2D& aHitPoint ) throw (::com::sun::star::uno::RuntimeException);
        virtual ::com::sun::star::rendering::Caret SAL_CALL getCaret( sal_Int32 nInsertionIndex, sal_Bool bExcludeLigatures ) throw (::com::sun::star::lang::IndexOutOfBoundsException, ::com::sun::star::uno::RuntimeException);
        virtual sal_Int32 SAL_CALL getNextInsertionIndex( sal_Int32 nStartIndex, sal_Int32 nCaretAdvancement, sal_Bool bExcludeLigatures ) throw (::com::sun::star::lang::IndexOutOfBoundsException, ::com::sun::star::uno::RuntimeException);
        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XPolyPolygon2D > SAL_CALL queryVisualHighlighting( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) throw (::com::sun::star::lang::IndexOutOfBoundsException, ::com::sun::star::uno::RuntimeException);
        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XPolyPolygon2D > SAL_CALL queryLogicalHighlighting( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) throw (::com::sun::star::lang::IndexOutOfBoundsException, ::com::sun::star::uno::RuntimeException);
        virtual double SAL_CALL getBaselineOffset(  ) throw (::com::sun::star::uno::RuntimeException);
        virtual sal_Int8 SAL_CALL getMainTextDirection(  ) throw (::com::sun::star::uno::RuntimeException);
        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCanvasFont > SAL_CALL getFont(  ) throw (::com::sun::star::uno::RuntimeException);
        virtual ::com::sun::star::rendering::StringContext SAL_CALL getText(  ) throw (::com::sun::star::uno::RuntimeException);

        // XServiceInfo
        virtual ::rtl::OUString SAL_CALL getImplementationName() throw( ::com::sun::star::uno::RuntimeException );
        virtual sal_Bool SAL_CALL supportsService( const ::rtl::OUString& ServiceName ) throw( ::com::sun::star::uno::RuntimeException );
        virtual ::com::sun::star::uno::Sequence< ::rtl::OUString > SAL_CALL getSupportedServiceNames()  throw( ::com::sun::star::uno::RuntimeException );

        bool draw( ::cairo::Cairo* pCairo );
        bool draw( SurfaceSharedPtr&                               pSurface,
                   OutputDevice&                                   rOutDev,
                   const Point&                                    rOutpos,
                   const ::com::sun::star::rendering::ViewState&   viewState,
                   const ::com::sun::star::rendering::RenderState& renderState ) const;

        void setupTextOffsets( sal_Int32*										outputOffsets,
                               const ::com::sun::star::uno::Sequence< double >& inputOffsets,
                               const ::com::sun::star::rendering::ViewState& 	viewState,
                               const ::com::sun::star::rendering::RenderState& 	renderState		) const;

    protected:
        ~TextLayout(); // we're a ref-counted UNO class. _We_ destroy ourselves.

    private:
        ::com::sun::star::rendering::StringContext maText;
        ::com::sun::star::uno::Sequence< double >  maLogicalAdvancements;
        CanvasFont::Reference                      mpFont;
        SurfaceProviderRef               		   mpRefDevice;
        sal_Int8                                   mnTextDirection;

        void useFont( ::cairo::Cairo* pCairo );
        bool isCairoRenderable(SystemFontData aSysFontData) const;
    };

}

#endif /* _CAIROCANVAS_TEXTLAYOUT_HXX */