office-gobmx/canvas/source/cairo/cairo_textlayout.hxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

#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 */

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */