59fd2b24bd
Restore the old behaviour: - preferences must be read-write for tv_preferences.c , read-only for all other modules -> use pointer to const struct - init functions must get the plugin buffer + its size as arguments for easily adding new functions -> use pointer to buffer pointer and size to make allocation easier - preferences meaning is private to each file and must not be known by tv_preferences.c -> move tv_check_header_and_footer() back in tv_window.c; also avoid chaining 3 times the callbacks by calling tv_set_preferences() only once if more than one preference needs changing git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27089 a1c6a512-1295-4272-9138-f99709370657
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 Gilles Roux
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* 2003 Garrett Derner
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* 2010 Yoshihisa Uchida
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef PLUGIN_TEXT_VIEWER_PAGER_H
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#define PLUGIN_TEXT_VIEWER_PAGER_H
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#include "tv_screen_pos.h"
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/* stuff for the paging */
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/*
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* initialize the pager module
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*
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* [In/Out] buf
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* the start pointer of the buffer
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*
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* [In/Out] size
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* buffer size
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*
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* return
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* true initialize success
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* false initialize failure
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*/
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bool tv_init_pager(unsigned char **buf, size_t *bufsize);
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/* finalize the pager module */
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void tv_finalize_pager(void);
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/* reset the stored line positions */
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void tv_reset_line_positions(void);
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/*
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* move to the next line
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*
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* [In] size
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* the current line size
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*/
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void tv_move_next_line(int size);
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/*
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* return the distance from the top of the current page
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*
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* [In] offset
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* the difference between the current line
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*
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* return
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* difference between the current line + offset from the top of the current page
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*/
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int tv_get_line_positions(int offset);
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/* change the new page */
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void tv_new_page(void);
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/*
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* convert the given file position to the nearest the position (page, line)
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*
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* [In] fpos
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* the file position which want to convert
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*
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* [Out] pos
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* result
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*/
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void tv_convert_fpos(off_t fpos, struct tv_screen_pos *pos);
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/*
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* move to the given page and line
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*
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* [In] page_offset
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* page offset
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*
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* [In] line_offset
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* line offset
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*
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* [In] whence
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* SEEK_CUR seek to the current page + offset page, the current line + offset line.
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* SEEK_SET seek to the offset page, offset line.
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* SEEK_END seek to the reading last page + offset page,
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* the last line of the reading last page + offset line.
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*/
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void tv_move_screen(int page_offset, int line_offset, int whence);
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#endif
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