canvas/source/cairo/cairo_textlayout.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <comphelper/compbase.hxx>
  23
  24 #include <com/sun/star/lang/XServiceInfo.hpp>
  25 #include <com/sun/star/rendering/RenderState.hpp>
  26 #include <com/sun/star/rendering/ViewState.hpp>
  27 #include <com/sun/star/rendering/XTextLayout.hpp>
  28
  29 #include <vcl/outdev.hxx>
  30
  31 #include "cairo_canvasfont.hxx"
  32
  33
  34 /* Definition of TextLayout class */
  35
  36 namespace cairocanvas
  37 {
  38     typedef ::comphelper::WeakComponentImplHelper< css::rendering::XTextLayout,
  39                                              css::lang::XServiceInfo > TextLayout_Base;
  40
  41     class TextLayout : public TextLayout_Base
  42     {
  43     public:
  44         /// make noncopyable
  45         TextLayout(const TextLayout&) = delete;
  46         const TextLayout& operator=(const TextLayout&) = delete;
  47
  48         TextLayout( css::rendering::StringContext               aText,
  49                     sal_Int8                                    nDirection,
  50                     sal_Int64                                   nRandomSeed,
  51                     CanvasFont::Reference                       rFont,
  52                     SurfaceProviderRef                          rRefDevice );
  53
  54         /// Dispose all internal references
  55         virtual void disposing(std::unique_lock<std::mutex>& rGuard) override;
  56
  57         // XTextLayout
  58         virtual css::uno::Sequence< css::uno::Reference< css::rendering::XPolyPolygon2D > > SAL_CALL queryTextShapes(  ) override;
  59         virtual css::uno::Sequence< css::geometry::RealRectangle2D > SAL_CALL queryInkMeasures(  ) override;
  60         virtual css::uno::Sequence< css::geometry::RealRectangle2D > SAL_CALL queryMeasures(  ) override;
  61         virtual css::uno::Sequence< double > SAL_CALL queryLogicalAdvancements(  ) override;
  62         virtual void SAL_CALL applyLogicalAdvancements( const css::uno::Sequence< double >& aAdvancements ) override;
  63         virtual css::uno::Sequence< sal_Bool > SAL_CALL queryKashidaPositions(  ) override;
  64         virtual void SAL_CALL applyKashidaPositions( const css::uno::Sequence< sal_Bool >& aPositions ) override;
  65         virtual css::geometry::RealRectangle2D SAL_CALL queryTextBounds(  ) override;
  66         virtual double SAL_CALL justify( double nSize ) override;
  67         virtual double SAL_CALL combinedJustify( const css::uno::Sequence< css::uno::Reference< css::rendering::XTextLayout > >& aNextLayouts, double nSize ) override;
  68         virtual css::rendering::TextHit SAL_CALL getTextHit( const css::geometry::RealPoint2D& aHitPoint ) override;
  69         virtual css::rendering::Caret SAL_CALL getCaret( sal_Int32 nInsertionIndex, sal_Bool bExcludeLigatures ) override;
  70         virtual sal_Int32 SAL_CALL getNextInsertionIndex( sal_Int32 nStartIndex, sal_Int32 nCaretAdvancement, sal_Bool bExcludeLigatures ) override;
  71         virtual css::uno::Reference< css::rendering::XPolyPolygon2D > SAL_CALL queryVisualHighlighting( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) override;
  72         virtual css::uno::Reference< css::rendering::XPolyPolygon2D > SAL_CALL queryLogicalHighlighting( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) override;
  73         virtual double SAL_CALL getBaselineOffset(  ) override;
  74         virtual sal_Int8 SAL_CALL getMainTextDirection(  ) override;
  75         virtual css::uno::Reference< css::rendering::XCanvasFont > SAL_CALL getFont(  ) override;
  76         virtual css::rendering::StringContext SAL_CALL getText(  ) override;
  77
  78         // XServiceInfo
  79         virtual OUString SAL_CALL getImplementationName() override;
  80         virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
  81         virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
  82
  83         void draw( OutputDevice&                                   rOutDev,
  84                    const Point&                                    rOutpos,
  85                    const css::rendering::ViewState&   viewState,
  86                    const css::rendering::RenderState& renderState ) const;
  87
  88         KernArray setupTextOffsets(
  89                                const css::uno::Sequence< double >& inputOffsets,
  90                                const css::rendering::ViewState&    viewState,
  91                                const css::rendering::RenderState&  renderState     ) const;
  92
  93     protected:
  94         virtual ~TextLayout() override; // we're a ref-counted UNO class. _We_ destroy ourselves.
  95
  96     private:
  97         css::rendering::StringContext              maText;
  98         css::uno::Sequence< double >               maLogicalAdvancements;
  99         css::uno::Sequence< sal_Bool >             maKashidaPositions;
 100         CanvasFont::Reference                      mpFont;
 101         SurfaceProviderRef                         mpRefDevice;
 102         sal_Int8                                   mnTextDirection;
 103     };
 104
 105 }
 106
 107 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */