139 lines
6.5 KiB
C++
139 lines
6.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <tools/long.hxx>
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#include <vcl/outdev.hxx>
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#include <memory>
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#include <vector>
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#include <com/sun/star/i18n/WordType.hpp>
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#include <com/sun/star/i18n/XBreakIterator.hpp>
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#include <com/sun/star/linguistic2/LinguServiceManager.hpp>
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class Control;
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namespace vcl
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{
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class VCL_DLLPUBLIC TextLayoutCommon
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{
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public:
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virtual tools::Long GetTextWidth( const OUString& _rText, sal_Int32 _nStartIndex, sal_Int32 _nLength ) const = 0;
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virtual void DrawText( const Point& _rStartPoint, const OUString& _rText, sal_Int32 _nStartIndex, sal_Int32 _nLength,
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std::vector< tools::Rectangle >* _pVector, OUString* _pDisplayText ) = 0;
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virtual tools::Long GetTextArray( const OUString& _rText, KernArray* _pDXArray, sal_Int32 _nStartIndex, sal_Int32 _nLength, bool bCaret = false ) const = 0;
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virtual sal_Int32 GetTextBreak( const OUString& _rText, tools::Long _nMaxTextWidth, sal_Int32 _nStartIndex, sal_Int32 _nLength ) const = 0;
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virtual bool DecomposeTextRectAction() const = 0;
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SAL_DLLPRIVATE OUString GetEllipsisString(OUString const& rOrigStr, tools::Long nMaxWidth, DrawTextFlags nStyle);
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std::tuple<sal_Int32, sal_Int32> BreakLine(const tools::Long nWidth, OUString const& rStr,
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css::uno::Reference< css::linguistic2::XHyphenator > const& xHyph,
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css::uno::Reference<css::i18n::XBreakIterator>& xBI,
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const bool bHyphenate, const tools::Long nOrigLineWidth,
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const sal_Int32 nPos, const sal_Int32 nLen);
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SAL_DLLPRIVATE std::tuple<sal_Int32, sal_Int32> BreakLineSimple(const tools::Long nWidth, OUString const& rStr,
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const sal_Int32 nPos, sal_Int32 nBreakPos, const tools::Long nOrigLineWidth);
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SAL_DLLPRIVATE tools::Long GetTextLines(tools::Rectangle const& rRect, const tools::Long nTextHeight,
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ImplMultiTextLineInfo& rLineInfo,
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tools::Long nWidth, OUString const& rStr,
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DrawTextFlags nStyle);
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protected:
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SAL_DLLPRIVATE ~TextLayoutCommon() COVERITY_NOEXCEPT_FALSE;
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private:
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SAL_DLLPRIVATE OUString GetCenterEllipsisString(std::u16string_view rOrigStr, sal_Int32 nIndex, tools::Long nMaxWidth);
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SAL_DLLPRIVATE OUString GetEndEllipsisString(OUString const& rOrigStr, sal_Int32 nIndex, tools::Long nMaxWidth, bool bClipText);
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SAL_DLLPRIVATE OUString GetNewsEllipsisString(OUString const& rOrigStr, tools::Long nMaxWidth, DrawTextFlags nStyle);
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};
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/** is an implementation of TextLayoutCommon which simply delegates its calls to the respective
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methods of an OutputDevice instance, without any inbetween magic.
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*/
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class VCL_DLLPUBLIC DefaultTextLayout final : public TextLayoutCommon
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{
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public:
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DefaultTextLayout( OutputDevice& _rTargetDevice )
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: m_rTargetDevice( _rTargetDevice )
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{
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}
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virtual ~DefaultTextLayout();
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// TextLayoutCommon overridables
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SAL_DLLPRIVATE virtual tools::Long GetTextWidth( const OUString& _rText,
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sal_Int32 _nStartIndex,
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sal_Int32 _nLength ) const override;
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virtual void DrawText( const Point& _rStartPoint,
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const OUString& _rText,
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sal_Int32 _nStartIndex,
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sal_Int32 _nLength,
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std::vector< tools::Rectangle >* _pVector,
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OUString* _pDisplayText ) override;
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SAL_DLLPRIVATE virtual tools::Long GetTextArray( const OUString& _rText,
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KernArray* _pDXArray,
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sal_Int32 _nStartIndex,
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sal_Int32 _nLength,
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bool bCaret = false ) const override;
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SAL_DLLPRIVATE virtual sal_Int32 GetTextBreak( const OUString& _rText,
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tools::Long _nMaxTextWidth,
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sal_Int32 _nStartIndex,
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sal_Int32 _nLength ) const override;
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SAL_DLLPRIVATE virtual bool DecomposeTextRectAction() const override;
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private:
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OutputDevice& m_rTargetDevice;
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};
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class ReferenceDeviceTextLayout;
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/** a class which allows rendering text of a Control onto a device, by taking into account the metrics of
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a reference device.
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*/
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class ControlTextRenderer final
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{
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public:
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ControlTextRenderer( const Control& _rControl, OutputDevice& _rTargetDevice, OutputDevice& _rReferenceDevice );
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~ControlTextRenderer();
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tools::Rectangle DrawText( const tools::Rectangle& _rRect,
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const OUString& _rText, DrawTextFlags _nStyle,
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std::vector< tools::Rectangle >* _pVector, OUString* _pDisplayText, const Size* i_pDeviceSize );
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tools::Rectangle GetTextRect( const tools::Rectangle& _rRect,
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const OUString& _rText, DrawTextFlags _nStyle, Size* o_pDeviceSize );
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private:
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ControlTextRenderer( const ControlTextRenderer& ) = delete;
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ControlTextRenderer& operator=( const ControlTextRenderer& ) = delete;
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private:
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::std::unique_ptr< ReferenceDeviceTextLayout > m_pImpl;
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};
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} // namespace vcl
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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