forked from len0rd/rockbox
5fd5f56cac
These functions just reset some state related to the scroll engine, which is already disabled for bootloaders. They get called from the LCD code and compiled into the binary, but have no real effect when the rest of the scroll engine is not present. Replacing the calls with inline stubs gets rid of this dead code from bootloaders. Change-Id: I12a6d8926e19477ae3a5913e7fc8aff41cecd970
138 lines
4.3 KiB
C
138 lines
4.3 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2007 Michael Sevakis
|
|
*
|
|
* LCD scrolling driver and scheduler
|
|
*
|
|
* Much collected and combined from the various Rockbox LCD drivers.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
#ifndef __SCROLL_ENGINE_H__
|
|
#define __SCROLL_ENGINE_H__
|
|
|
|
#include <stdbool.h>
|
|
#include "config.h"
|
|
#include "file.h"
|
|
|
|
struct viewport;
|
|
struct scrollinfo;
|
|
|
|
extern void scroll_init(void) INIT_ATTR;
|
|
|
|
extern void lcd_bidir_scroll(int threshold);
|
|
extern void lcd_scroll_speed(int speed);
|
|
extern void lcd_scroll_delay(int ms);
|
|
|
|
#ifdef BOOTLOADER
|
|
static inline void lcd_scroll_stop(void)
|
|
{
|
|
}
|
|
|
|
static inline void lcd_scroll_stop_viewport(const struct viewport *vp)
|
|
{
|
|
(void)vp;
|
|
}
|
|
|
|
static inline void lcd_scroll_stop_viewport_rect(const struct viewport *vp, int x, int y, int width, int height)
|
|
{
|
|
(void)vp;
|
|
(void)x;
|
|
(void)y;
|
|
(void)width;
|
|
(void)height;
|
|
}
|
|
|
|
static inline bool lcd_scroll_now(struct scrollinfo *scroll)
|
|
{
|
|
(void)scroll;
|
|
return false;
|
|
}
|
|
#else
|
|
extern void lcd_scroll_stop(void);
|
|
extern void lcd_scroll_stop_viewport(const struct viewport *vp);
|
|
extern void lcd_scroll_stop_viewport_rect(const struct viewport *vp, int x, int y, int width, int height);
|
|
extern bool lcd_scroll_now(struct scrollinfo *scroll);
|
|
#endif
|
|
#ifdef HAVE_REMOTE_LCD
|
|
extern void lcd_remote_scroll_speed(int speed);
|
|
extern void lcd_remote_scroll_delay(int ms);
|
|
|
|
extern void lcd_remote_scroll_stop(void);
|
|
extern void lcd_remote_scroll_stop_viewport(const struct viewport *vp);
|
|
extern void lcd_remote_scroll_stop_viewport_rect(const struct viewport *vp, int x, int y, int width, int height);
|
|
extern bool lcd_remote_scroll_now(struct scrollinfo *scroll);
|
|
#endif
|
|
|
|
|
|
|
|
/* internal usage, but in multiple drivers
|
|
* larger than the normal linebuffer since it holds the line a second
|
|
* time (+3 spaces) for non-bidir scrolling */
|
|
#define SCROLL_SPACING 3
|
|
#define SCROLL_LINE_SIZE (MAX_PATH + SCROLL_SPACING + 3*LCD_WIDTH/2 + 2)
|
|
|
|
struct scrollinfo
|
|
{
|
|
struct viewport* vp;
|
|
char linebuffer[(SCROLL_LINE_SIZE / 2) - SCROLL_SPACING];
|
|
const char *line;
|
|
/* rectangle for the line */
|
|
int x, y; /* relative to the viewort */
|
|
int width, height;
|
|
/* pixel to skip from the beginning of the string, increments as the text scrolls */
|
|
int offset;
|
|
/* scroll presently forward or backward? */
|
|
bool backward;
|
|
bool bidir;
|
|
long start_tick;
|
|
|
|
/* support for custom scrolling functions,
|
|
* must be called with ::line == NULL to indicate that the line
|
|
* stops scrolling or when the userdata pointer is going to be changed
|
|
* (the custom scroller can release the userdata then) */
|
|
void (*scroll_func)(struct scrollinfo *s);
|
|
void *userdata;
|
|
};
|
|
|
|
struct scroll_screen_info
|
|
{
|
|
struct scrollinfo * const scroll;
|
|
const int num_scroll; /* number of scrollable lines (also number of scroll structs) */
|
|
int lines; /* Number of currently scrolling lines */
|
|
long ticks; /* # of ticks between updates*/
|
|
long delay; /* ticks delay before start */
|
|
int bidir_limit; /* percent */
|
|
int step; /* pixels per scroll step */
|
|
#if defined(HAVE_REMOTE_LCD)
|
|
long last_scroll;
|
|
#endif
|
|
};
|
|
|
|
/** main lcd **/
|
|
#define LCD_SCROLLABLE_LINES ((LCD_HEIGHT+4)/5 < 32 ? (LCD_HEIGHT+4)/5 : 32)
|
|
|
|
extern struct scroll_screen_info lcd_scroll_info;
|
|
|
|
/** remote lcd **/
|
|
#ifdef HAVE_REMOTE_LCD
|
|
#define LCD_REMOTE_SCROLLABLE_LINES \
|
|
(((LCD_REMOTE_HEIGHT+4)/5 < 32) ? (LCD_REMOTE_HEIGHT+4)/5 : 32)
|
|
extern struct scroll_screen_info lcd_remote_scroll_info;
|
|
#endif
|
|
|
|
#endif /* __SCROLL_ENGINE_H__ */
|