cairo_textlayout.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#pragma once
 
#include <comphelper/compbase.hxx>
 
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/rendering/RenderState.hpp>
#include <com/sun/star/rendering/ViewState.hpp>
#include <com/sun/star/rendering/XTextLayout.hpp>
 
#include <vcl/outdev.hxx>
 
#include "cairo_canvasfont.hxx"
 
 
/* Definition of TextLayout class */
 
namespace cairocanvas
{
    typedef ::comphelper::WeakComponentImplHelper< css::rendering::XTextLayout,
                                             css::lang::XServiceInfo > TextLayout_Base;
 
    class TextLayout : public TextLayout_Base
    {
    public:
        TextLayout(const TextLayout&) = delete;
        const TextLayout& operator=(const TextLayout&) = delete;
 
        TextLayout( css::rendering::StringContext               aText,
                    sal_Int8                                    nDirection,
                    sal_Int64                                   nRandomSeed,
                    CanvasFont::Reference                       rFont,
                    SurfaceProviderRef                          rRefDevice );
 
        virtual void disposing(std::unique_lock<std::mutex>& rGuard) override;
 
        // XTextLayout
        virtual css::uno::Sequence< css::uno::Reference< css::rendering::XPolyPolygon2D > > SAL_CALL queryTextShapes(  ) override;
        virtual css::uno::Sequence< css::geometry::RealRectangle2D > SAL_CALL queryInkMeasures(  ) override;
        virtual css::uno::Sequence< css::geometry::RealRectangle2D > SAL_CALL queryMeasures(  ) override;
        virtual css::uno::Sequence< double > SAL_CALL queryLogicalAdvancements(  ) override;
        virtual void SAL_CALL applyLogicalAdvancements( const css::uno::Sequence< double >& aAdvancements ) override;
        virtual css::uno::Sequence< sal_Bool > SAL_CALL queryKashidaPositions(  ) override;
        virtual void SAL_CALL applyKashidaPositions( const css::uno::Sequence< sal_Bool >& aPositions ) override;
        virtual css::geometry::RealRectangle2D SAL_CALL queryTextBounds(  ) override;
        virtual double SAL_CALL justify( double nSize ) override;
        virtual double SAL_CALL combinedJustify( const css::uno::Sequence< css::uno::Reference< css::rendering::XTextLayout > >& aNextLayouts, double nSize ) override;
        virtual css::rendering::TextHit SAL_CALL getTextHit( const css::geometry::RealPoint2D& aHitPoint ) override;
        virtual css::rendering::Caret SAL_CALL getCaret( sal_Int32 nInsertionIndex, sal_Bool bExcludeLigatures ) override;
        virtual sal_Int32 SAL_CALL getNextInsertionIndex( sal_Int32 nStartIndex, sal_Int32 nCaretAdvancement, sal_Bool bExcludeLigatures ) override;
        virtual css::uno::Reference< css::rendering::XPolyPolygon2D > SAL_CALL queryVisualHighlighting( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) override;
        virtual css::uno::Reference< css::rendering::XPolyPolygon2D > SAL_CALL queryLogicalHighlighting( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) override;
        virtual double SAL_CALL getBaselineOffset(  ) override;
        virtual sal_Int8 SAL_CALL getMainTextDirection(  ) override;
        virtual css::uno::Reference< css::rendering::XCanvasFont > SAL_CALL getFont(  ) override;
        virtual css::rendering::StringContext SAL_CALL getText(  ) override;
 
        // XServiceInfo
        virtual OUString SAL_CALL getImplementationName() override;
        virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
        virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
 
        void draw( OutputDevice&                                   rOutDev,
                   const Point&                                    rOutpos,
                   const css::rendering::ViewState&   viewState,
                   const css::rendering::RenderState& renderState ) const;
 
        KernArray setupTextOffsets(
                               const css::uno::Sequence< double >& inputOffsets,
                               const css::rendering::ViewState&    viewState,
                               const css::rendering::RenderState&  renderState     ) const;
 
    protected:
        virtual ~TextLayout() override; // we're a ref-counted UNO class. _We_ destroy ourselves.
 
    private:
        css::rendering::StringContext              maText;
        css::uno::Sequence< double >               maLogicalAdvancements;
        css::uno::Sequence< sal_Bool >             maKashidaPositions;
        CanvasFont::Reference                      mpFont;
        SurfaceProviderRef                         mpRefDevice;
        sal_Int8                                   mnTextDirection;
    };
 
}
 
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