forked from len0rd/rockbox
b094d80dab
Uses a similar technique as lcd_*.c files of #including a common .c file, so that a unified implementation can be reused for both displays. Change-Id: I21f6de76df757b093e1a1dff0a4caf96a44fe77e
127 lines
3.5 KiB
C
127 lines
3.5 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) 2007 by Michael Sevakis
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*
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* LCD scroll control functions (API to apps).
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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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/* This file is meant to be #included by scroll_engine.c (twice if a remote
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* is present) */
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#ifndef LCDFN /* Not compiling for remote - define macros for main LCD. */
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#define LCDFN(fn) lcd_ ## fn
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#define LCDM(ma) LCD_ ## ma
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#define MAIN_LCD
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#endif
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static struct scrollinfo LCDFN(scroll)[LCD_SCROLLABLE_LINES];
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struct scroll_screen_info LCDFN(scroll_info) =
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{
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.scroll = LCDFN(scroll),
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.lines = 0,
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.ticks = 12,
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.delay = HZ/2,
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.bidir_limit = 50,
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#ifdef HAVE_LCD_BITMAP
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.step = 6,
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#endif
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#ifdef HAVE_LCD_CHARCELLS
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.jump_scroll_delay = HZ/4,
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.jump_scroll = 0,
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#endif
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};
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void LCDFN(scroll_stop)(void)
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{
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LCDFN(scroll_info).lines = 0;
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}
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/* Stop scrolling line y in the specified viewport, or all lines if y < 0 */
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void LCDFN(scroll_stop_viewport_line)(const struct viewport *current_vp, int line)
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{
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int i = 0;
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while (i < LCDFN(scroll_info).lines)
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{
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struct viewport *vp = LCDFN(scroll_info).scroll[i].vp;
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if (((vp == current_vp)) &&
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((line < 0) || (LCDFN(scroll_info).scroll[i].y == line)))
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{
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/* If i is not the last active line in the array, then move
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the last item to position i */
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if ((i + 1) != LCDFN(scroll_info).lines)
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{
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LCDFN(scroll_info).scroll[i] =
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LCDFN(scroll_info).scroll[LCDFN(scroll_info).lines-1];
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}
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LCDFN(scroll_info).lines--;
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/* A line can only appear once, so we're done,
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* unless we are clearing the whole viewport */
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if (line >= 0)
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return ;
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}
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else
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{
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i++;
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}
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}
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}
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/* Stop all scrolling lines in the specified viewport */
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void LCDFN(scroll_stop_viewport)(const struct viewport *current_vp)
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{
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LCDFN(scroll_stop_viewport_line)(current_vp, -1);
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}
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void LCDFN(scroll_speed)(int speed)
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{
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LCDFN(scroll_info).ticks = scroll_tick_table[speed];
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}
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#if defined(HAVE_LCD_BITMAP)
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void LCDFN(scroll_step)(int step)
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{
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LCDFN(scroll_info).step = step;
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}
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#endif
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void LCDFN(scroll_delay)(int ms)
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{
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LCDFN(scroll_info).delay = ms / (HZ / 10);
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}
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void LCDFN(bidir_scroll)(int percent)
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{
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LCDFN(scroll_info).bidir_limit = percent;
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}
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#ifdef HAVE_LCD_CHARCELLS
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void LCDFN(jump_scroll)(int mode) /* 0=off, 1=once, ..., JUMP_SCROLL_ALWAYS */
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{
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LCDFN(scroll_info).jump_scroll = mode;
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}
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void LCDFN(jump_scroll_delay)(int ms)
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{
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LCDFN(scroll_info).jump_scroll_delay = ms / (HZ / 10);
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}
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#endif
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