canvas/source/cairo/cairo_textlayout.hxx

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  30
  31 #ifndef _CAIROCANVAS_TEXTLAYOUT_HXX
  32 #define _CAIROCANVAS_TEXTLAYOUT_HXX
  33
  34 #include <cppuhelper/compbase2.hxx>
  35 #include <comphelper/broadcasthelper.hxx>
  36
  37 #include <com/sun/star/lang/XServiceInfo.hpp>
  38 #include <com/sun/star/rendering/XTextLayout.hpp>
  39
  40 #include <basegfx/vector/b2isize.hxx>
  41
  42 #include <vcl/outdev.hxx>
  43
  44 #include <boost/utility.hpp>
  45
  46 #include "cairo_cairo.hxx"
  47 #include "cairo_canvasfont.hxx"
  48
  49
  50 /* Definition of TextLayout class */
  51
  52 namespace cairocanvas
  53 {
  54     typedef ::cppu::WeakComponentImplHelper2< ::com::sun::star::rendering::XTextLayout,
  55                                                ::com::sun::star::lang::XServiceInfo > TextLayout_Base;
  56
  57     class TextLayout : public ::comphelper::OBaseMutex,
  58                        public TextLayout_Base,
  59                        private ::boost::noncopyable
  60     {
  61     public:
  62         TextLayout( const ::com::sun::star::rendering::StringContext& aText,
  63                     sal_Int8                                          nDirection,
  64                     sal_Int64                                         nRandomSeed,
  65                     const CanvasFont::Reference&                      rFont,
  66                     const SurfaceProviderRef&                         rRefDevice );
  67
  68         /// Dispose all internal references
  69         virtual void SAL_CALL disposing();
  70
  71         // XTextLayout
  72         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);
  73         virtual ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealRectangle2D > SAL_CALL queryInkMeasures(  ) throw (::com::sun::star::uno::RuntimeException);
  74         virtual ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealRectangle2D > SAL_CALL queryMeasures(  ) throw (::com::sun::star::uno::RuntimeException);
  75         virtual ::com::sun::star::uno::Sequence< double > SAL_CALL queryLogicalAdvancements(  ) throw (::com::sun::star::uno::RuntimeException);
  76         virtual void SAL_CALL applyLogicalAdvancements( const ::com::sun::star::uno::Sequence< double >& aAdvancements ) throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::uno::RuntimeException);
  77         virtual ::com::sun::star::geometry::RealRectangle2D SAL_CALL queryTextBounds(  ) throw (::com::sun::star::uno::RuntimeException);
  78         virtual double SAL_CALL justify( double nSize ) throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::uno::RuntimeException);
  79         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);
  80         virtual ::com::sun::star::rendering::TextHit SAL_CALL getTextHit( const ::com::sun::star::geometry::RealPoint2D& aHitPoint ) throw (::com::sun::star::uno::RuntimeException);
  81         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);
  82         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);
  83         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);
  84         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);
  85         virtual double SAL_CALL getBaselineOffset(  ) throw (::com::sun::star::uno::RuntimeException);
  86         virtual sal_Int8 SAL_CALL getMainTextDirection(  ) throw (::com::sun::star::uno::RuntimeException);
  87         virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCanvasFont > SAL_CALL getFont(  ) throw (::com::sun::star::uno::RuntimeException);
  88         virtual ::com::sun::star::rendering::StringContext SAL_CALL getText(  ) throw (::com::sun::star::uno::RuntimeException);
  89
  90         // XServiceInfo
  91         virtual ::rtl::OUString SAL_CALL getImplementationName() throw( ::com::sun::star::uno::RuntimeException );
  92         virtual sal_Bool SAL_CALL supportsService( const ::rtl::OUString& ServiceName ) throw( ::com::sun::star::uno::RuntimeException );
  93         virtual ::com::sun::star::uno::Sequence< ::rtl::OUString > SAL_CALL getSupportedServiceNames()  throw( ::com::sun::star::uno::RuntimeException );
  94
  95         bool draw( ::cairo::Cairo* pCairo );
  96         bool draw( SurfaceSharedPtr&                               pSurface,
  97                    OutputDevice&                                   rOutDev,
  98                    const Point&                                    rOutpos,
  99                    const ::com::sun::star::rendering::ViewState&   viewState,
 100                    const ::com::sun::star::rendering::RenderState& renderState ) const;
 101
 102         void setupTextOffsets( sal_Int32*                                                                               outputOffsets,
 103                                const ::com::sun::star::uno::Sequence< double >& inputOffsets,
 104                                const ::com::sun::star::rendering::ViewState&    viewState,
 105                                const ::com::sun::star::rendering::RenderState&  renderState             ) const;
 106
 107     protected:
 108         ~TextLayout(); // we're a ref-counted UNO class. _We_ destroy ourselves.
 109
 110     private:
 111         ::com::sun::star::rendering::StringContext maText;
 112         ::com::sun::star::uno::Sequence< double >  maLogicalAdvancements;
 113         CanvasFont::Reference                      mpFont;
 114         SurfaceProviderRef                                 mpRefDevice;
 115         sal_Int8                                   mnTextDirection;
 116
 117         void useFont( ::cairo::Cairo* pCairo );
 118         bool isCairoRenderable(SystemFontData aSysFontData) const;
 119     };
 120
 121 }
 122
 123 #endif /* _CAIROCANVAS_TEXTLAYOUT_HXX */