controllayout.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#pragma once

#if !defined(VCL_DLLIMPLEMENTATION) && !defined(TOOLKIT_DLLIMPLEMENTATION) && !defined(VCL_INTERNALS)
#error "don't use this in new code"
#endif

#include <rtl/ustring.hxx>
#include <tools/gen.hxx>
#include <vector>
#include <vcl/ctrl.hxx>
#include <vcl/dllapi.h>

namespace vcl
{

struct VCL_DLLPUBLIC ControlLayoutData
{
    // contains the string really displayed
    // there must be exactly one bounding rectangle in m_aUnicodeBoundRects
    // for every character in m_aDisplayText
    OUString                            m_aDisplayText;
    // the bounding rectangle of every character
    // where one character may consist of many glyphs
    std::vector< tools::Rectangle >            m_aUnicodeBoundRects;
    // start indices of lines
    std::vector< tools::Long >                 m_aLineIndices;
    // notify parent control on destruction
    VclPtr<const Control>               m_pParent;

    ControlLayoutData();
    ~ControlLayoutData();

    tools::Rectangle GetCharacterBounds( tools::Long nIndex ) const;
    // returns the character index for corresponding to rPoint (in control coordinates)
    // -1 is returned if no character is at that point
    tools::Long GetIndexForPoint( const Point& rPoint ) const;
    // returns the number of lines in the result of GetDisplayText()
    tools::Long GetLineCount() const;
    // returns the interval [start,end] of line nLine
    // returns [-1,-1] for an invalid line
    ::Pair GetLineStartEnd( tools::Long nLine ) const;
    tools::Long ToRelativeLineIndex( tools::Long nIndex ) const;
};

} // namespace vcl

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