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Added multiline scroll support.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2729 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Markus Braun 2002-10-21 13:14:25 +00:00
parent f45345edd9
commit bc254fe95f
6 changed files with 308 additions and 81 deletions
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181
firmware/drivers/lcd-player.c
View file

@ -46,9 +46,16 @@
#define LCD_CURSOR(x,y) ((char)(lcd_cram+((y)*16+(x))))
#define LCD_ICON(i) ((char)(lcd_iram+i))
#define SCROLLABLE_LINES 2
#define SCROLL_MODE_OFF 0
#define SCROLL_MODE_PAUSE 1
#define SCROLL_MODE_RUN 2
/*** generic code ***/
struct scrollinfo {
int mode;
char text[MAX_PATH];
char line[32];
int textlen;
@ -63,10 +70,10 @@ static char scroll_stack[DEFAULT_STACK_SIZE];
static char scroll_name[] = "scroll";
static char scroll_speed = 8; /* updates per second */
static char scroll_spacing = 3; /* spaces between end and start of text */
static long scroll_start_tick;
static struct scrollinfo scroll; /* only one scroll line at the moment */
static int scroll_count = 0;
static struct scrollinfo scroll[SCROLLABLE_LINES];
static const unsigned char new_lcd_ascii[] = {
0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
@ -272,13 +279,26 @@ void lcd_init (void)
void lcd_puts_scroll(int x, int y, unsigned char* string )
{
struct scrollinfo* s = &scroll;
struct scrollinfo* s;
int index;
scroll_start_tick = current_tick + HZ/2;
/* search for the next free entry */
for (index = 0; index < SCROLLABLE_LINES; index++) {
s = &scroll[index];
if (s->mode == SCROLL_MODE_OFF) {
break;
}
}
s->space = 11 - x;
lcd_puts(x,y,string);
s->textlen = strlen(string);
if ( s->textlen > s->space ) {
s->mode = SCROLL_MODE_RUN;
s->offset=s->space;
s->startx=x;
s->starty=y;
@ -289,31 +309,102 @@ void lcd_puts_scroll(int x, int y, unsigned char* string )
s->space > (int)sizeof s->line ?
(int)sizeof s->line : s->space );
s->line[sizeof s->line - 1] = 0;
scroll_count = 1;
}
}
void lcd_stop_scroll(void)
{
if ( scroll_count ) {
struct scrollinfo* s = &scroll;
scroll_count = 0;
struct scrollinfo* s;
int index;
/* restore scrolled row */
lcd_puts(s->startx,s->starty,s->text);
lcd_update();
for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
s = &scroll[index];
if ( s->mode == SCROLL_MODE_RUN ||
s->mode == SCROLL_MODE_PAUSE ) {
/* restore scrolled row */
lcd_puts(s->startx, s->starty, s->text);
s->mode = SCROLL_MODE_OFF;
}
}
lcd_update();
}
void lcd_stop_scroll_line(int line)
{
struct scrollinfo* s;
int index;
for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
s = &scroll[index];
if ( s->startx == line &&
( s->mode == SCROLL_MODE_RUN ||
s->mode == SCROLL_MODE_PAUSE )) {
/* restore scrolled row */
lcd_puts(s->startx, s->starty, s->text);
s->mode = SCROLL_MODE_OFF;
}
}
lcd_update();
}
void lcd_scroll_pause(void)
{
scroll_count = 0;
struct scrollinfo* s;
int index;
for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
s = &scroll[index];
if ( s->mode == SCROLL_MODE_RUN ) {
s->mode = SCROLL_MODE_PAUSE;
}
}
}
void lcd_scroll_pause_line(int line)
{
struct scrollinfo* s;
int index;
for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
s = &scroll[index];
if ( s->startx == line &&
s->mode == SCROLL_MODE_RUN ) {
s->mode = SCROLL_MODE_PAUSE;
}
}
}
void lcd_scroll_resume(void)
{
scroll_count = 1;
struct scrollinfo* s;
int index;
scroll_start_tick = current_tick + HZ/2;
for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
s = &scroll[index];
if ( s->mode == SCROLL_MODE_PAUSE ) {
s->mode = SCROLL_MODE_RUN;
}
}
}
void lcd_scroll_resume_line(int line)
{
struct scrollinfo* s;
int index;
scroll_start_tick = current_tick + HZ/2;
for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
s = &scroll[index];
if ( s->startx == line &&
s->mode == SCROLL_MODE_PAUSE ) {
s->mode = SCROLL_MODE_RUN;
}
}
}
void lcd_scroll_speed(int speed)
@ -323,36 +414,54 @@ void lcd_scroll_speed(int speed)
static void scroll_thread(void)
{
struct scrollinfo* s = &scroll;
struct scrollinfo* s;
int index;
int i;
bool update;
/* initialize scroll struct array */
for (index = 0; index < SCROLLABLE_LINES; index++) {
scroll[index].mode = SCROLL_MODE_OFF;
}
scroll_start_tick = current_tick;
while ( 1 ) {
if ( !scroll_count ) {
yield();
continue;
}
update = false;
/* wait 0.5s before starting scroll */
if ( scroll_count < scroll_speed/2 )
scroll_count++;
else {
int i;
for ( i=0; i<s->space-1; i++ )
s->line[i] = s->line[i+1];
if ( TIME_AFTER(current_tick, scroll_start_tick) ) {
if ( s->offset < s->textlen ) {
s->line[(int)s->space - 1] = s->text[(int)s->offset];
s->offset++;
}
else {
s->line[s->space - 1] = ' ';
if ( s->offset < s->textlen + scroll_spacing - 1 )
s->offset++;
else
s->offset = 0;
for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
s = &scroll[index];
if ( s->mode == SCROLL_MODE_RUN ) {
update = true;
for ( i = 0; i < s->space - 1; i++ )
s->line[i] = s->line[i+1];
if ( s->offset < s->textlen ) {
s->line[(int)s->space - 1] = s->text[(int)s->offset];
s->offset++;
}
else {
s->line[s->space - 1] = ' ';
if ( s->offset < s->textlen + scroll_spacing - 1 )
s->offset++;
else
s->offset = 0;
}
lcd_puts(s->startx,s->starty,s->line);
}
}
lcd_puts(s->startx,s->starty,s->line);
lcd_update();
if (update) {
lcd_update();
}
}
sleep(HZ/scroll_speed);
}
}