editeng/source/accessibility/AccessibleStringWrap.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.
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   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
  21 #include <algorithm>
  22 #include <tools/debug.hxx>
  23 #include <vcl/outdev.hxx>
  24
  25 #include <editeng/svxfont.hxx>
  26 #include <editeng/AccessibleStringWrap.hxx>
  27
  28
  29
  30 // AccessibleStringWrap implementation
  31
  32
  33
  34 AccessibleStringWrap::AccessibleStringWrap( OutputDevice& rDev, SvxFont& rFont, const OUString& rText ) :
  35     mrDev( rDev ),
  36     mrFont( rFont ),
  37     maText( rText )
  38 {
  39 }
  40
  41 void AccessibleStringWrap::GetCharacterBounds( sal_Int32 nIndex, Rectangle& rRect )
  42 {
  43     DBG_ASSERT(nIndex >= 0 && nIndex <= USHRT_MAX,
  44                "SvxAccessibleStringWrap::GetCharacterBounds: index value overflow");
  45
  46     mrFont.SetPhysFont( &mrDev );
  47
  48     // #108900# Handle virtual position one-past-the end of the string
  49     if( nIndex >= maText.getLength() )
  50     {
  51         // create a caret bounding rect that has the height of the
  52         // current font and is one pixel wide.
  53         rRect.Left() = mrDev.GetTextWidth(maText);
  54         rRect.Top() = 0;
  55         rRect.SetSize( Size(mrDev.GetTextHeight(), 1) );
  56     }
  57     else
  58     {
  59         long aXArray[2];
  60         mrDev.GetCaretPositions( maText, aXArray, static_cast< sal_uInt16 >(nIndex), 1 );
  61         rRect.Left() = 0;
  62         rRect.Top() = 0;
  63         rRect.SetSize( Size(mrDev.GetTextHeight(), labs(aXArray[0] - aXArray[1])) );
  64         rRect.Move( ::std::min(aXArray[0], aXArray[1]), 0 );
  65     }
  66
  67     if( mrFont.IsVertical() )
  68     {
  69         // #101701# Rotate to vertical
  70         rRect = Rectangle( Point(-rRect.Top(), rRect.Left()),
  71                            Point(-rRect.Bottom(), rRect.Right()));
  72     }
  73 }
  74
  75 sal_Int32 AccessibleStringWrap::GetIndexAtPoint( const Point& rPoint )
  76 {
  77     // search for character bounding box containing given point
  78     Rectangle aRect;
  79     sal_Int32 i, nLen = maText.getLength();
  80     for( i=0; i<nLen; ++i )
  81     {
  82         GetCharacterBounds(i, aRect);
  83         if( aRect.IsInside(rPoint) )
  84             return i;
  85     }
  86
  87     return -1;
  88 }
  89
  90 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */