svx/source/accessibility/AccessibleStringWrap.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_svx.hxx"
  33
  34 #include <algorithm>
  35 #include <tools/debug.hxx>
  36 #include <vcl/outdev.hxx>
  37
  38 #include <svx/svxfont.hxx>
  39 #include "AccessibleStringWrap.hxx"
  40
  41
  42 //------------------------------------------------------------------------
  43 //
  44 // AccessibleStringWrap implementation
  45 //
  46 //------------------------------------------------------------------------
  47
  48 AccessibleStringWrap::AccessibleStringWrap( OutputDevice& rDev, SvxFont& rFont, const String& rText ) :
  49     mrDev( rDev ),
  50     mrFont( rFont ),
  51     maText( rText )
  52 {
  53 }
  54
  55 sal_Bool AccessibleStringWrap::GetCharacterBounds( sal_Int32 nIndex, Rectangle& rRect )
  56 {
  57     DBG_ASSERT(nIndex >= 0 && nIndex <= USHRT_MAX,
  58                "SvxAccessibleStringWrap::GetCharacterBounds: index value overflow");
  59
  60     mrFont.SetPhysFont( &mrDev );
  61
  62     // #108900# Handle virtual position one-past-the end of the string
  63     if( nIndex >= maText.Len() )
  64     {
  65         // create a caret bounding rect that has the height of the
  66         // current font and is one pixel wide.
  67         rRect.Left() = mrDev.GetTextWidth(maText);
  68         rRect.Top() = 0;
  69         rRect.SetSize( Size(mrDev.GetTextHeight(), 1) );
  70     }
  71     else
  72     {
  73         sal_Int32 aXArray[2];
  74         mrDev.GetCaretPositions( maText, aXArray, static_cast< USHORT >(nIndex), 1 );
  75         rRect.Left() = 0;
  76         rRect.Top() = 0;
  77         rRect.SetSize( Size(mrDev.GetTextHeight(), labs(aXArray[0] - aXArray[1])) );
  78         rRect.Move( ::std::min(aXArray[0], aXArray[1]), 0 );
  79     }
  80
  81     if( mrFont.IsVertical() )
  82     {
  83         // #101701# Rotate to vertical
  84         rRect = Rectangle( Point(-rRect.Top(), rRect.Left()),
  85                            Point(-rRect.Bottom(), rRect.Right()));
  86     }
  87
  88     return sal_True;
  89 }
  90
  91 sal_Int32 AccessibleStringWrap::GetIndexAtPoint( const Point& rPoint )
  92 {
  93     // search for character bounding box containing given point
  94     Rectangle aRect;
  95     sal_Int32 i, nLen = maText.Len();
  96     for( i=0; i<nLen; ++i )
  97     {
  98         GetCharacterBounds(i, aRect);
  99         if( aRect.IsInside(rPoint) )
 100             return i;
 101     }
 102
 103     return -1;
 104 }