mirror of
https://invent.kde.org/graphics/okular
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82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
/***************************************************************************
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* Copyright (C) 2005 by Piotr Szymanski <niedakh@gmail.com> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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***************************************************************************/
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#ifndef _OKULAR_MISC_H_
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#define _OKULAR_MISC_H_
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#include <okular/core/okular_export.h>
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#include <okular/core/area.h>
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namespace Okular {
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/**
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@short Wrapper around the information needed to generate the selection area
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There are two assumptions inside this class:
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1. the start never changes, one instance of this class is used for one selection,
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therefore the start of the selection will not change, only end and direction of
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the selection will change.
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By direction we mean the direction in which the end moves in relation to the start,
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forward selection is when end is after the start, backward when its before.
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2. The following changes might appear during selection:
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a. the end moves without changing the direction (it can move up and down but not past the start):
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only itE will be updated
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b. the end moves with changing the direction then itB becomes itE if the previous direction was forward
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or itE becomes itB
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3. Internally it that is related to the start cursor is always at it[0] while it related to end is it[1],
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transition between meanings (itB/itE) is done with dir modifier;
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*/
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class OKULAR_EXPORT TextSelection
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{
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public:
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/**
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* Creates a new text selection with the given @p start and @p end point.
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*/
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TextSelection( const NormalizedPoint &start, const NormalizedPoint &end );
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/**
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* Destroys the text selection.
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*/
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~TextSelection();
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/**
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* Changes the end point of the selection to the given @p point.
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*/
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void end( const NormalizedPoint &point );
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void itE( int pos );
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void itB( int pos );
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/**
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* Returns the direction of the selection.
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*/
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int direction() const;
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/**
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* Returns the start point of the selection.
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*/
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NormalizedPoint start() const;
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/**
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* Returns the end point of the selection.
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*/
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NormalizedPoint end() const;
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int itB() const;
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int itE() const;
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private:
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class Private;
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Private* const d;
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};
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}
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#endif
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