417 lines
14 KiB
C
417 lines
14 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2013 Thomas Martitz
|
|
*
|
|
* 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include <ctype.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
|
|
#include "scroll_engine.h"
|
|
#include "system.h"
|
|
#include "line.h"
|
|
#include "gcc_extensions.h"
|
|
#include "icon.h"
|
|
#include "screens.h"
|
|
#include "settings.h"
|
|
#include "debug.h"
|
|
#include "viewport.h"
|
|
#include "debug.h"
|
|
|
|
#ifdef HAVE_REMOTE_LCD
|
|
#define MAX_LINES (LCD_SCROLLABLE_LINES + LCD_REMOTE_SCROLLABLE_LINES)
|
|
#else
|
|
#define MAX_LINES LCD_SCROLLABLE_LINES
|
|
#endif
|
|
|
|
|
|
static void style_line(struct screen *display, int x, int y, struct line_desc *line);
|
|
|
|
static void put_text(struct screen *display, int x, int y, struct line_desc *line,
|
|
const char *text, bool prevent_scroll, int text_skip_pixels);
|
|
|
|
struct line_desc_scroll {
|
|
struct line_desc desc;
|
|
bool used;
|
|
};
|
|
|
|
/* Allocate MAX_LINES+1 because at the time get_line_desc() is called
|
|
* the scroll engine did not yet determine that it ran out of lines
|
|
* (because puts_scroll_func() wasn't called yet. Therefore we can
|
|
* run out of lines before setting the used field. By allocating
|
|
* one item more we can survive that point and set used to false
|
|
* if the scroll engine runs out of lines */
|
|
static struct line_desc_scroll lines[MAX_LINES+1];
|
|
|
|
static struct line_desc_scroll *get_line_desc(void)
|
|
{
|
|
static unsigned line_index;
|
|
struct line_desc_scroll *this;
|
|
|
|
do
|
|
{
|
|
this = &lines[line_index++];
|
|
if (line_index >= ARRAYLEN(lines))
|
|
line_index = 0;
|
|
} while (this->used);
|
|
|
|
return this;
|
|
}
|
|
|
|
static void scroller(struct scrollinfo *s, struct screen *display)
|
|
{
|
|
/* style_line() expects the entire line rect, including padding, to
|
|
* draw selector properly across the text+padding. however struct scrollinfo
|
|
* has only the rect for the text itself, which is off depending on the
|
|
* line padding. this needs to be corrected for calling style_line().
|
|
* The alternative would be to really redraw only the text area,
|
|
* but that would complicate the code a lot */
|
|
struct line_desc_scroll *line = s->userdata;
|
|
if (!s->line)
|
|
{
|
|
line->used = false;
|
|
}
|
|
else
|
|
{
|
|
style_line(display, s->x, s->y - (line->desc.height/2 - display->getcharheight()/2), &line->desc);
|
|
put_text(display, s->x, s->y, &line->desc, s->line, true, s->offset);
|
|
}
|
|
}
|
|
|
|
static void scroller_main(struct scrollinfo *s)
|
|
{
|
|
scroller(s, &screens[SCREEN_MAIN]);
|
|
}
|
|
|
|
#ifdef HAVE_REMOTE_LCD
|
|
static void scroller_remote(struct scrollinfo *s)
|
|
{
|
|
scroller(s, &screens[SCREEN_REMOTE]);
|
|
}
|
|
#endif
|
|
|
|
static void (*scrollers[NB_SCREENS])(struct scrollinfo *s) = {
|
|
scroller_main,
|
|
#ifdef HAVE_REMOTE_LCD
|
|
scroller_remote,
|
|
#endif
|
|
};
|
|
|
|
static void put_icon(struct screen *display, int x, int y,
|
|
struct line_desc *line,
|
|
enum themable_icons icon)
|
|
{
|
|
unsigned drmode = DRMODE_FG;
|
|
/* Need to change the drawmode:
|
|
* mono icons should behave like text, inverted on the selector bar
|
|
* native (colored) icons should be drawn as-is */
|
|
if (get_icon_format(display->screen_type) == FORMAT_MONO && (line->style & STYLE_INVERT))
|
|
drmode = DRMODE_SOLID | DRMODE_INVERSEVID;
|
|
|
|
display->set_drawmode(drmode);
|
|
screen_put_iconxy(display, x, y, icon);
|
|
}
|
|
|
|
|
|
static void put_text(struct screen *display,
|
|
int x, int y, struct line_desc *line,
|
|
const char *text, bool prevent_scroll,
|
|
int text_skip_pixels)
|
|
{
|
|
/* set drawmode because put_icon() might have changed it */
|
|
unsigned drmode = DRMODE_FG;
|
|
if (line->style & STYLE_INVERT)
|
|
drmode = DRMODE_SOLID | DRMODE_INVERSEVID;
|
|
|
|
display->set_drawmode(drmode);
|
|
|
|
if (line->scroll && !prevent_scroll)
|
|
{
|
|
bool scrolls;
|
|
struct line_desc_scroll *line_data = get_line_desc();
|
|
line_data->desc = *line;
|
|
/* precalculate to avoid doing it in the scroller, it's save to
|
|
* do this on the copy of the original line_desc*/
|
|
if (line_data->desc.height == -1)
|
|
line_data->desc.height = display->getcharheight();
|
|
scrolls = display->putsxy_scroll_func(x, y, text,
|
|
scrollers[display->screen_type], line_data, text_skip_pixels);
|
|
line_data->used = scrolls;
|
|
}
|
|
else
|
|
display->putsxy_scroll_func(x, y, text, NULL, NULL, text_skip_pixels);
|
|
}
|
|
|
|
/* A line consists of:
|
|
* |[Ss]|[i]|[Ss]|[t]|, where s is empty space (pixels), S is empty space
|
|
* (n space characters), i is an icon and t is the text.
|
|
*
|
|
* All components are optional. However, even if none are specified the whole
|
|
* line will be cleared and redrawn.
|
|
*
|
|
* For empty space with the width of an icon use i and pass Icon_NOICON as
|
|
* corresponding argument.
|
|
*/
|
|
static void print_line(struct screen *display,
|
|
int x, int y, struct line_desc *line,
|
|
const char *fmt, va_list ap)
|
|
{
|
|
const char *str;
|
|
bool num_is_valid;
|
|
int ch, num, height;
|
|
int xpos = x;
|
|
int icon_y, icon_h, icon_w;
|
|
enum themable_icons icon;
|
|
char tempbuf[MAX_PATH+32];
|
|
unsigned int tempbuf_idx;
|
|
int max_width = display->getwidth();
|
|
|
|
height = line->height == -1 ? display->getcharheight() : line->height;
|
|
icon_h = get_icon_height(display->screen_type);
|
|
icon_w = get_icon_width(display->screen_type);
|
|
tempbuf_idx = 0;
|
|
/* For the icon use a differnet calculation which to round down instead.
|
|
* This tends to align better with the font's baseline for small heights.
|
|
* A proper aligorithm would take the baseline into account but this has
|
|
* worked sufficiently well for us (fix this if needed) */
|
|
icon_y = y + (height - icon_h)/2;
|
|
/* vertically center string on the line
|
|
* x/2 - y/2 rounds up compared to (x-y)/2 if one of x and y is odd */
|
|
y += height/2 - display->getcharheight()/2;
|
|
|
|
/* parse format string */
|
|
while (xpos < max_width)
|
|
{
|
|
ch = *fmt++;
|
|
/* need to check for escaped '$' */
|
|
if (ch == '$' && *fmt != '$')
|
|
{
|
|
/* extra flag as num == 0 can be valid */
|
|
num_is_valid = false;
|
|
num = 0;
|
|
if (tempbuf_idx)
|
|
{ /* flush pending inline text */
|
|
tempbuf_idx = tempbuf[tempbuf_idx] = 0;
|
|
put_text(display, xpos, y, line, tempbuf, false, 0);
|
|
xpos += display->getstringsize(tempbuf, NULL, NULL);
|
|
if (xpos >= max_width)
|
|
return;
|
|
}
|
|
next:
|
|
ch = *fmt++;
|
|
switch(ch)
|
|
{
|
|
case '*': /* num from parameter list */
|
|
num = va_arg(ap, int);
|
|
num_is_valid = true;
|
|
goto next;
|
|
|
|
case 'i': /* icon (without pad) */
|
|
case 'I': /* icon with pad */
|
|
if (ch == 'i')
|
|
num = 0;
|
|
else /* 'I' */
|
|
if (!num_is_valid)
|
|
num = 1;
|
|
icon = va_arg(ap, int);
|
|
/* draw it, then skip over */
|
|
if (icon != Icon_NOICON)
|
|
put_icon(display, xpos + num, icon_y, line, icon);
|
|
xpos += icon_w + num*2;
|
|
break;
|
|
|
|
case 'S':
|
|
if (!num_is_valid)
|
|
num = 1;
|
|
xpos += num * display->getcharwidth();
|
|
break;
|
|
|
|
case 's':
|
|
if (!num_is_valid)
|
|
num = 1;
|
|
xpos += num;
|
|
break;
|
|
|
|
case 't':
|
|
str = va_arg(ap, const char *);
|
|
put_text(display, xpos, y, line, str, false, num);
|
|
xpos += display->getstringsize(str, NULL, NULL);
|
|
break;
|
|
|
|
default:
|
|
if (LIKELY(isdigit(ch)))
|
|
{
|
|
num_is_valid = true;
|
|
num = 10*num + ch - '0';
|
|
goto next;
|
|
}
|
|
else
|
|
{
|
|
/* any other character here is an erroneous format string */
|
|
snprintf(tempbuf, sizeof(tempbuf), "<E:%c>", ch);
|
|
display->putsxy(xpos, y, tempbuf);
|
|
/* Don't consider going forward, fix the caller */
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{ /* handle string constant in format string */
|
|
if (tempbuf_idx < sizeof(tempbuf)-1)
|
|
{
|
|
tempbuf[tempbuf_idx++] = ch;
|
|
}
|
|
else if (tempbuf_idx == sizeof(tempbuf)-1)
|
|
{
|
|
tempbuf[tempbuf_idx++] = '\0';
|
|
DEBUGF("%s ", ch ? "put_line: String truncated" : "");
|
|
}
|
|
if (!ch)
|
|
{ /* end of format string. flush pending inline string, if any */
|
|
if (tempbuf[0])
|
|
put_text(display, xpos, y, line, tempbuf, false, 0);
|
|
return;
|
|
}
|
|
else if (ch == '$')
|
|
fmt++; /* escaped '$', display just once */
|
|
}
|
|
}
|
|
}
|
|
|
|
static void style_line(struct screen *display,
|
|
int x, int y, struct line_desc *line)
|
|
{
|
|
int style = line->style;
|
|
int width = display->getwidth();
|
|
int height = line->height == -1 ? display->getcharheight() : line->height;
|
|
int bar_height = height;
|
|
|
|
/* mask out gradient and colorbar styles for non-color displays */
|
|
if (display->depth < 16 && (style & (STYLE_COLORBAR|STYLE_GRADIENT)))
|
|
{
|
|
style &= ~(STYLE_COLORBAR|STYLE_GRADIENT);
|
|
style |= STYLE_INVERT;
|
|
}
|
|
|
|
if (line->separator_height > 0 && (line->line == line->nlines-1))
|
|
{
|
|
int sep_height = MIN(line->separator_height, height);
|
|
display->set_drawmode(DRMODE_FG);
|
|
#ifdef HAVE_LCD_COLOR
|
|
display->set_foreground(global_settings.list_separator_color);
|
|
#endif
|
|
display->fillrect(x, y + height - sep_height, width, sep_height);
|
|
bar_height -= sep_height;
|
|
#ifdef HAVE_LCD_COLOR
|
|
display->set_foreground(global_settings.fg_color);
|
|
#endif
|
|
}
|
|
|
|
/* mask out gradient and colorbar styles for non-color displays */
|
|
if (display->depth < 16)
|
|
{
|
|
if (style & (STYLE_COLORBAR|STYLE_GRADIENT))
|
|
{
|
|
style &= ~(STYLE_COLORBAR|STYLE_GRADIENT);
|
|
style |= STYLE_INVERT;
|
|
}
|
|
style &= ~STYLE_COLORED;
|
|
}
|
|
|
|
switch (style & _STYLE_DECO_MASK)
|
|
{
|
|
#ifdef HAVE_LCD_COLOR
|
|
case STYLE_GRADIENT:
|
|
display->set_drawmode(DRMODE_FG);
|
|
display->gradient_fillrect_part(x, y, width, bar_height,
|
|
line->line_color,
|
|
line->line_end_color,
|
|
height*line->nlines,
|
|
height*line->line);
|
|
break;
|
|
case STYLE_COLORBAR:
|
|
display->set_drawmode(DRMODE_FG);
|
|
display->set_foreground(line->line_color);
|
|
display->fillrect(x, y, width - x, bar_height);
|
|
break;
|
|
#endif
|
|
case STYLE_INVERT:
|
|
display->set_drawmode(DRMODE_FG);
|
|
display->fillrect(x, y, width - x, bar_height);
|
|
break;
|
|
case STYLE_DEFAULT: default:
|
|
display->set_drawmode(DRMODE_BG | DRMODE_INVERSEVID);
|
|
display->fillrect(x, y, width - x, bar_height);
|
|
break;
|
|
case STYLE_NONE:
|
|
break;
|
|
}
|
|
#if (LCD_DEPTH > 1 || (defined(LCD_REMOTE_DEPTH) && LCD_REMOTE_DEPTH > 1))
|
|
/* prepare fg and bg colors for text drawing, be careful to not
|
|
* override any previously set colors unless mandated by the style */
|
|
if (display->depth > 1)
|
|
{
|
|
if (style & STYLE_COLORED)
|
|
{
|
|
if (style & STYLE_INVERT)
|
|
display->set_background(line->text_color);
|
|
else
|
|
display->set_foreground(line->text_color);
|
|
}
|
|
else if (style & (STYLE_GRADIENT|STYLE_COLORBAR))
|
|
display->set_foreground(line->text_color);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void vput_line(struct screen *display,
|
|
int x, int y, struct line_desc *line,
|
|
const char *fmt, va_list ap)
|
|
{
|
|
#if (LCD_DEPTH > 1 || (defined(LCD_REMOTE_DEPTH) && LCD_REMOTE_DEPTH > 1))
|
|
/* push and pop fg and bg colors as to not compromise unrelated lines */
|
|
unsigned fg = 0, bg = 0; /* shut up gcc */
|
|
if (display->depth > 1 && line->style > STYLE_INVERT)
|
|
{
|
|
fg = display->get_foreground();
|
|
bg = display->get_background();
|
|
}
|
|
#endif
|
|
style_line(display, x, y, line);
|
|
print_line(display, x, y, line, fmt, ap);
|
|
#if (LCD_DEPTH > 1 || (defined(LCD_REMOTE_DEPTH) && LCD_REMOTE_DEPTH > 1))
|
|
if (display->depth > 1 && line->style > STYLE_INVERT)
|
|
{
|
|
display->set_foreground(fg);
|
|
display->set_background(bg);
|
|
}
|
|
#endif
|
|
display->set_drawmode(DRMODE_SOLID);
|
|
}
|
|
|
|
void put_line(struct screen *display,
|
|
int x, int y, struct line_desc *line,
|
|
const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
vput_line(display, x, y, line, fmt, ap);
|
|
va_end(ap);
|
|
}
|