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Diffstat (limited to 'vcl/inc/vcl/textlayout.hxx')
| -rw-r--r-- | vcl/inc/vcl/textlayout.hxx | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/vcl/inc/vcl/textlayout.hxx b/vcl/inc/vcl/textlayout.hxx new file mode 100644 index 000000000000..418e1aa8bf64 --- /dev/null +++ b/vcl/inc/vcl/textlayout.hxx @@ -0,0 +1,136 @@ +/************************************************************************* + * + * 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, USHORT _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 |