xref: /aoo41x/main/canvas/source/vcl/textlayout.hxx (revision 91c99ff4)

/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/



#ifndef _VCLCANVAS_TEXTLAYOUT_HXX
#define _VCLCANVAS_TEXTLAYOUT_HXX

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

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

#include <canvas/vclwrapper.hxx>

#include "canvasfont.hxx"
#include "impltools.hxx"

#include <boost/utility.hpp>


/* Definition of TextLayout class */

namespace vclcanvas
{
    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 ::com::sun::star::uno::Reference<
                          ::com::sun::star::rendering::XGraphicDevice>& xDevice,
                    const OutDevProviderSharedPtr&                      rOutDev );

        /// 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( OutputDevice&                                   rOutDev,
                   const Point&                                    rOutpos,
                   const ::com::sun::star::rendering::ViewState&   viewState,
                   const ::com::sun::star::rendering::RenderState& renderState ) const;

    private:
        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;

        ::com::sun::star::rendering::StringContext 	     maText;
        ::com::sun::star::uno::Sequence< double >        maLogicalAdvancements;
        CanvasFont::Reference                            mpFont;
        ::com::sun::star::uno::Reference<
            ::com::sun::star::rendering::XGraphicDevice> mxDevice;
        OutDevProviderSharedPtr                          mpOutDevProvider;
        sal_Int8                                         mnTextDirection;
    };

}

#endif /* _VCLCANVAS_TEXTLAYOUT_HXX */