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Diffstat (limited to 'vcl/inc/textlayout.hxx')
| -rw-r--r-- | vcl/inc/textlayout.hxx | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/vcl/inc/textlayout.hxx b/vcl/inc/textlayout.hxx new file mode 100644 index 0000000000..53462d0cc1 --- /dev/null +++ b/vcl/inc/textlayout.hxx @@ -0,0 +1,143 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#pragma once + +#include <tools/long.hxx> +#include <vcl/outdev.hxx> + +#include <memory> +#include <vector> + +#include <com/sun/star/i18n/WordType.hpp> +#include <com/sun/star/i18n/XBreakIterator.hpp> +#include <com/sun/star/linguistic2/LinguServiceManager.hpp> + +class Control; + +namespace vcl +{ + class SAL_NO_VTABLE ITextLayout + { + public: + virtual tools::Long GetTextWidth( const OUString& _rText, sal_Int32 _nStartIndex, sal_Int32 _nLength ) const = 0; + virtual void DrawText( const Point& _rStartPoint, const OUString& _rText, sal_Int32 _nStartIndex, sal_Int32 _nLength, + std::vector< tools::Rectangle >* _pVector, OUString* _pDisplayText ) = 0; + virtual tools::Long GetTextArray( const OUString& _rText, KernArray* _pDXArray, sal_Int32 _nStartIndex, sal_Int32 _nLength, bool bCaret = false ) const = 0; + virtual sal_Int32 GetTextBreak( const OUString& _rText, tools::Long _nMaxTextWidth, sal_Int32 _nStartIndex, sal_Int32 _nLength ) const = 0; + virtual bool DecomposeTextRectAction() const = 0; + + protected: + ~ITextLayout() COVERITY_NOEXCEPT_FALSE {} + }; + + class TextLayoutCommon : public ITextLayout + { + public: + OUString GetEllipsisString(OUString const& rOrigStr, tools::Long nMaxWidth, DrawTextFlags nStyle); + + sal_Int32 BreakLinesWithIterator(const tools::Long nWidth, OUString const& rStr, + css::uno::Reference< css::linguistic2::XHyphenator > const& xHyph, + css::uno::Reference<css::i18n::XBreakIterator> const& xBI, + const bool bHyphenate, + const sal_Int32 nPos, sal_Int32 nBreakPos); + + sal_Int32 BreakLinesSimple(const tools::Long nWidth, OUString const& rStr, + const sal_Int32 nPos, sal_Int32 nBreakPos, tools::Long& nLineWidth); + + tools::Long GetTextLines(tools::Rectangle const& rRect, const tools::Long nTextHeight, + ImplMultiTextLineInfo& rLineInfo, + tools::Long nWidth, OUString const& rStr, + DrawTextFlags nStyle); + + private: + OUString GetCenterEllipsisString(OUString const& rOrigStr, sal_Int32 nIndex, tools::Long nMaxWidth); + OUString GetEndEllipsisString(OUString const& rOrigStr, sal_Int32 nIndex, tools::Long nMaxWidth, bool bClipText); + OUString GetNewsEllipsisString(OUString const& rOrigStr, tools::Long nMaxWidth, DrawTextFlags nStyle); + }; + + /** 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 final : public TextLayoutCommon + { + public: + DefaultTextLayout( OutputDevice& _rTargetDevice ) + : m_rTargetDevice( _rTargetDevice ) + { + } + virtual ~DefaultTextLayout(); + + // ITextLayout overridables + virtual tools::Long GetTextWidth( const OUString& _rText, + sal_Int32 _nStartIndex, + sal_Int32 _nLength ) const override; + + virtual void DrawText( const Point& _rStartPoint, + const OUString& _rText, + sal_Int32 _nStartIndex, + sal_Int32 _nLength, + std::vector< tools::Rectangle >* _pVector, + OUString* _pDisplayText ) override; + + virtual tools::Long GetTextArray( const OUString& _rText, + KernArray* _pDXArray, + sal_Int32 _nStartIndex, + sal_Int32 _nLength, + bool bCaret = false ) const override; + + virtual sal_Int32 GetTextBreak( const OUString& _rText, + tools::Long _nMaxTextWidth, + sal_Int32 _nStartIndex, + sal_Int32 _nLength ) const override; + + virtual bool DecomposeTextRectAction() const override; + + private: + OutputDevice& m_rTargetDevice; + }; + + 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 final + { + public: + ControlTextRenderer( const Control& _rControl, OutputDevice& _rTargetDevice, OutputDevice& _rReferenceDevice ); + ~ControlTextRenderer(); + + tools::Rectangle DrawText( const tools::Rectangle& _rRect, + const OUString& _rText, DrawTextFlags _nStyle, + std::vector< tools::Rectangle >* _pVector, OUString* _pDisplayText, const Size* i_pDeviceSize ); + + tools::Rectangle GetTextRect( const tools::Rectangle& _rRect, + const OUString& _rText, DrawTextFlags _nStyle, Size* o_pDeviceSize ); + + private: + ControlTextRenderer( const ControlTextRenderer& ) = delete; + ControlTextRenderer& operator=( const ControlTextRenderer& ) = delete; + + private: + ::std::unique_ptr< ReferenceDeviceTextLayout > m_pImpl; + }; + +} // namespace vcl + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |