AccessibleStringWrap.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#include <algorithm>
#include <cstdlib>
 
#include <tools/debug.hxx>
#include <utility>
#include <vcl/outdev.hxx>
 
#include <editeng/svxfont.hxx>
#include <AccessibleStringWrap.hxx>
 
 
// AccessibleStringWrap implementation
 
 
AccessibleStringWrap::AccessibleStringWrap( OutputDevice& rDev, SvxFont& rFont, OUString aText ) :
    mrDev( rDev ),
    mrFont( rFont ),
    maText(std::move( aText ))
{
}
 
void AccessibleStringWrap::GetCharacterBounds( sal_Int32 nIndex, tools::Rectangle& rRect )
{
    DBG_ASSERT(nIndex >= 0,
               "SvxAccessibleStringWrap::GetCharacterBounds: index value overflow");
 
    mrFont.SetPhysFont(mrDev);
 
    // #108900# Handle virtual position one-past-the end of the string
    if( nIndex >= maText.getLength() )
    {
        // create a caret bounding rect that has the height of the
        // current font and is one pixel wide.
        rRect.SetLeft( mrDev.GetTextWidth(maText) );
        rRect.SetTop( 0 );
        rRect.SetSize( Size(mrDev.GetTextHeight(), 1) );
    }
    else
    {
        KernArray aDXArray;
        mrDev.GetTextArray(maText, &aDXArray, nIndex, 1);
        rRect.SetLeft( 0 );
        rRect.SetTop( 0 );
        rRect.SetSize(Size(mrDev.GetTextHeight(), aDXArray[0]));
    }
 
    if( mrFont.IsVertical() )
    {
        // #101701# Rotate to vertical
        rRect = tools::Rectangle( Point(-rRect.Top(), rRect.Left()),
                           Point(-rRect.Bottom(), rRect.Right()));
    }
}
 
sal_Int32 AccessibleStringWrap::GetIndexAtPoint( const Point& rPoint )
{
    // search for character bounding box containing given point
    tools::Rectangle aRect;
    sal_Int32 i, nLen = maText.getLength();
    for( i=0; i<nLen; ++i )
    {
        GetCharacterBounds(i, aRect);
        if( aRect.Contains(rPoint) )
            return i;
    }
 
    return -1;
}
 
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