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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
***********************************************************************/
#ifndef VCL_TEXTLAYOUT_HXX
#define VCL_TEXTLAYOUT_HXX
#include "vcl/outdev.hxx"
#include <tools/solar.h>
#include <tools/string.hxx>
#include <memory>
class Control;
//........................................................................
namespace vcl
{
//........................................................................
//====================================================================
//= ITextLayout
//====================================================================
class SAL_NO_VTABLE ITextLayout
{
public:
virtual long GetTextWidth( const XubString& _rText, xub_StrLen _nStartIndex, xub_StrLen _nLength ) const = 0;
virtual void DrawText( const Point& _rStartPoint, const XubString& _rText, xub_StrLen _nStartIndex, xub_StrLen _nLength,
MetricVector* _pVector, String* _pDisplayText ) = 0;
virtual bool GetCaretPositions( const XubString& _rText, sal_Int32* _pCaretXArray, xub_StrLen _nStartIndex, xub_StrLen _nLength ) const = 0;
virtual xub_StrLen GetTextBreak( const XubString& _rText, long _nMaxTextWidth, xub_StrLen _nStartIndex, xub_StrLen _nLength ) const = 0;
virtual bool DecomposeTextRectAction() const = 0;
};
//====================================================================
//= DefaultTextLayout
//====================================================================
/** is an implementation of the ITextLayout interface which simply delegates its calls to the respective
methods of an OutputDevice instance, without any inbetween magic.
*/
class DefaultTextLayout : public ITextLayout
{
public:
DefaultTextLayout( OutputDevice& _rTargetDevice )
:m_rTargetDevice( _rTargetDevice )
{
}
virtual ~DefaultTextLayout();
// ITextLayout overridables
virtual long GetTextWidth(
const XubString& _rText,
xub_StrLen _nStartIndex,
xub_StrLen _nLength
) const;
virtual void DrawText(
const Point& _rStartPoint,
const XubString& _rText,
xub_StrLen _nStartIndex,
xub_StrLen _nLength,
MetricVector* _pVector,
String* _pDisplayText
);
virtual bool GetCaretPositions(
const XubString& _rText,
sal_Int32* _pCaretXArray,
xub_StrLen _nStartIndex,
xub_StrLen _nLength
) const;
virtual xub_StrLen GetTextBreak(
const XubString& _rText,
long _nMaxTextWidth,
xub_StrLen _nStartIndex,
xub_StrLen _nLength
) const;
virtual bool DecomposeTextRectAction() const;
private:
OutputDevice& m_rTargetDevice;
};
//====================================================================
//= ControlTextRenderer
//====================================================================
class ReferenceDeviceTextLayout;
/** a class which allows rendering text of a Control onto a device, by taking into account the metrics of
a reference device.
*/
class ControlTextRenderer
{
public:
ControlTextRenderer( const Control& _rControl, OutputDevice& _rTargetDevice, OutputDevice& _rReferenceDevice );
virtual ~ControlTextRenderer();
Rectangle DrawText( const Rectangle& _rRect,
const XubString& _rText, sal_uInt16 _nStyle = 0,
MetricVector* _pVector = NULL, String* _pDisplayText = NULL );
private:
ControlTextRenderer(); // never implemented
ControlTextRenderer( const ControlTextRenderer& ); // never implemented
ControlTextRenderer& operator=( const ControlTextRenderer& ); // never implemented
private:
::std::auto_ptr< ReferenceDeviceTextLayout > m_pImpl;
};
//........................................................................
} // namespace vcl
//........................................................................
#endif // VCL_TEXTLAYOUT_HXX
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