vcl/unx/gtk3/a11y/gtk3atkimage.cxx

   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 #include "atkwrapper.hxx"
  21
  22 #include <com/sun/star/accessibility/XAccessibleImage.hpp>
  23
  24 using namespace ::com::sun::star;
  25
  26 // FIXME
  27 static const gchar *
  28 getAsConst( const OUString& rString )
  29 {
  30     static const int nMax = 10;
  31     static OString aUgly[nMax];
  32     static int nIdx = 0;
  33     nIdx = (nIdx + 1) % nMax;
  34     aUgly[nIdx] = OUStringToOString( rString, RTL_TEXTENCODING_UTF8 );
  35     return aUgly[ nIdx ].getStr();
  36 }
  37
  38 /// @throws uno::RuntimeException
  39 static css::uno::Reference<css::accessibility::XAccessibleImage>
  40     getImage( AtkImage *pImage )
  41 {
  42     AtkObjectWrapper *pWrap = ATK_OBJECT_WRAPPER( pImage );
  43     if( pWrap )
  44     {
  45         if( !pWrap->mpImage.is() )
  46         {
  47             pWrap->mpImage.set(pWrap->mpContext, css::uno::UNO_QUERY);
  48         }
  49
  50         return pWrap->mpImage;
  51     }
  52
  53     return css::uno::Reference<css::accessibility::XAccessibleImage>();
  54 }
  55
  56 extern "C" {
  57
  58 static const gchar *
  59 image_get_image_description( AtkImage *image )
  60 {
  61     try {
  62         css::uno::Reference<css::accessibility::XAccessibleImage> pImage
  63             = getImage( image );
  64         if( pImage.is() )
  65             return getAsConst( pImage->getAccessibleImageDescription() );
  66     }
  67     catch(const uno::Exception&) {
  68         g_warning( "Exception in getAccessibleImageDescription()" );
  69     }
  70
  71     return nullptr;
  72 }
  73
  74 static void
  75 image_get_image_position( AtkImage     *image,
  76                           gint         *x,
  77                           gint         *y,
  78                           AtkCoordType  coord_type )
  79 {
  80     *x = *y = -1;
  81     if( ATK_IS_COMPONENT( image ) )
  82     {
  83         SAL_WNODEPRECATED_DECLARATIONS_PUSH
  84         atk_component_get_position( ATK_COMPONENT( image ), x, y, coord_type );
  85         SAL_WNODEPRECATED_DECLARATIONS_POP
  86     }
  87     else
  88         g_warning( "FIXME: no image position information" );
  89 }
  90
  91 static void
  92 image_get_image_size( AtkImage *image,
  93                       gint     *width,
  94                       gint     *height )
  95 {
  96     *width = *height = -1;
  97     try {
  98         css::uno::Reference<css::accessibility::XAccessibleImage> pImage
  99             = getImage( image );
 100         if( pImage.is() )
 101         {
 102             *width = pImage->getAccessibleImageWidth();
 103             *height = pImage->getAccessibleImageHeight();
 104         }
 105     }
 106     catch(const uno::Exception&) {
 107         g_warning( "Exception in getAccessibleImageHeight() or Width" );
 108     }
 109 }
 110
 111 static gboolean
 112 image_set_image_description( AtkImage *, const gchar * )
 113 {
 114     g_warning ("FIXME: no set image description");
 115     return FALSE;
 116 }
 117
 118 } // extern "C"
 119
 120 void
 121 imageIfaceInit (AtkImageIface *iface)
 122 {
 123   g_return_if_fail (iface != nullptr);
 124
 125   iface->set_image_description = image_set_image_description;
 126   iface->get_image_description = image_get_image_description;
 127   iface->get_image_position = image_get_image_position;
 128   iface->get_image_size = image_get_image_size;
 129 }
 130
 131 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */