editeng/source/accessibility/AccessibleStringWrap.cxx

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  28
  29
  30 #include <algorithm>
  31 #include <tools/debug.hxx>
  32 #include <vcl/outdev.hxx>
  33
  34 #include <editeng/svxfont.hxx>
  35 #include <editeng/AccessibleStringWrap.hxx>
  36
  37 //------------------------------------------------------------------------
  38 //
  39 // AccessibleStringWrap implementation
  40 //
  41 //------------------------------------------------------------------------
  42
  43 AccessibleStringWrap::AccessibleStringWrap( OutputDevice& rDev, SvxFont& rFont, const String& rText ) :
  44     mrDev( rDev ),
  45     mrFont( rFont ),
  46     maText( rText )
  47 {
  48 }
  49
  50 sal_Bool AccessibleStringWrap::GetCharacterBounds( sal_Int32 nIndex, Rectangle& rRect )
  51 {
  52     DBG_ASSERT(nIndex >= 0 && nIndex <= USHRT_MAX,
  53                "SvxAccessibleStringWrap::GetCharacterBounds: index value overflow");
  54
  55     mrFont.SetPhysFont( &mrDev );
  56
  57     // #108900# Handle virtual position one-past-the end of the string
  58     if( nIndex >= maText.Len() )
  59     {
  60         // create a caret bounding rect that has the height of the
  61         // current font and is one pixel wide.
  62         rRect.Left() = mrDev.GetTextWidth(maText);
  63         rRect.Top() = 0;
  64         rRect.SetSize( Size(mrDev.GetTextHeight(), 1) );
  65     }
  66     else
  67     {
  68         sal_Int32 aXArray[2];
  69         mrDev.GetCaretPositions( maText, aXArray, static_cast< sal_uInt16 >(nIndex), 1 );
  70         rRect.Left() = 0;
  71         rRect.Top() = 0;
  72         rRect.SetSize( Size(mrDev.GetTextHeight(), labs(aXArray[0] - aXArray[1])) );
  73         rRect.Move( ::std::min(aXArray[0], aXArray[1]), 0 );
  74     }
  75
  76     if( mrFont.IsVertical() )
  77     {
  78         // #101701# Rotate to vertical
  79         rRect = Rectangle( Point(-rRect.Top(), rRect.Left()),
  80                            Point(-rRect.Bottom(), rRect.Right()));
  81     }
  82
  83     return sal_True;
  84 }
  85
  86 sal_Int32 AccessibleStringWrap::GetIndexAtPoint( const Point& rPoint )
  87 {
  88     // search for character bounding box containing given point
  89     Rectangle aRect;
  90     sal_Int32 i, nLen = maText.Len();
  91     for( i=0; i<nLen; ++i )
  92     {
  93         GetCharacterBounds(i, aRect);
  94         if( aRect.IsInside(rPoint) )
  95             return i;
  96     }
  97
  98     return -1;
  99 }
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