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+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_VCL_INC_TEXTLAYOUT_HXX
+#define INCLUDED_VCL_INC_TEXTLAYOUT_HXX
+
+#include <memory>
+
+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 void GetCaretPositions( const OUString& _rText, sal_Int32* _pCaretXArray, sal_Int32 _nStartIndex, sal_Int32 _nLength ) 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 {}
+ };
+
+ /** 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 ITextLayout
+ {
+ 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 void GetCaretPositions( const OUString& _rText,
+ sal_Int32* _pCaretXArray,
+ sal_Int32 _nStartIndex,
+ sal_Int32 _nLength ) 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
+
+#endif // INCLUDED_VCL_INC_TEXTLAYOUT_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */