void LCDFN(scroll_fn)(void)
{
struct font* pf;
struct scrollinfo* s;
int index;
int xpos, ypos;
struct viewport* old_vp = current_vp;
for ( index = 0; index < LCDFN(scroll_info).lines; index++ ) {
s = &LCDFN(scroll_info).scroll[index];
/* check pause */
if (TIME_BEFORE(current_tick, s->start_tick))
continue;
LCDFN(set_viewport)(s->vp);
if (s->backward)
s->offset -= LCDFN(scroll_info).step;
else
s->offset += LCDFN(scroll_info).step;
pf = font_get(current_vp->font);
xpos = s->startx;
ypos = s->y * pf->height + s->y_offset;
if (s->bidir) { /* scroll bidirectional */
if (s->offset <= 0) {
/* at beginning of line */
s->offset = 0;
s->backward = false;
s->start_tick = current_tick + LCDFN(scroll_info).delay * 2;
}
if (s->offset >= s->width - (current_vp->width - xpos)) {
/* at end of line */
s->offset = s->width - (current_vp->width - xpos);
s->backward = true;
s->start_tick = current_tick + LCDFN(scroll_info).delay * 2;
}
}
else {
/* scroll forward the whole time */
if (s->offset >= s->width)
s->offset %= s->width;
}
LCDFN(putsxyofs_style)(xpos, ypos, s->line, s->style, s->width,
pf->height, s->offset);
LCDFN(update_viewport_rect)(xpos, ypos, current_vp->width - xpos,
pf->height);
}
LCDFN(set_viewport)(old_vp);
}
/* put a string at a given char position */
void LCDFN(puts_style_xyoffset)(int x, int y, const unsigned char *str,
int style, int x_offset, int y_offset)
{
int xpos, ypos, w, h;
LCDFN(scroll_stop_line)(current_vp, y);
if(!str)
return;
LCDFN(getstringsize)(str, &w, &h);
xpos = x * LCDFN(getstringsize)(" ", NULL, NULL);
ypos = y * h + y_offset;
LCDFN(putsxyofs_style)(xpos, ypos, str, style, w, h, x_offset);
}
static void LCDFN(putsxyofs_style)(int xpos, int ypos,
const unsigned char *str, int style,
int w, int h, int offset)
{
int lastmode = current_vp->drawmode;
int xrect = xpos + MAX(w - offset, 0);
int x = VP_IS_RTL(current_vp) ? xpos : xrect;
#if defined(MAIN_LCD) && defined(HAVE_LCD_COLOR)
int oldfgcolor = current_vp->fg_pattern;
int oldbgcolor = current_vp->bg_pattern;
current_vp->drawmode = DRMODE_SOLID | ((style & STYLE_INVERT) ?
DRMODE_INVERSEVID : 0);
if (style & STYLE_COLORED) {
if (current_vp->drawmode == DRMODE_SOLID)
current_vp->fg_pattern = style & STYLE_COLOR_MASK;
else
current_vp->bg_pattern = style & STYLE_COLOR_MASK;
}
current_vp->drawmode ^= DRMODE_INVERSEVID;
if (style & STYLE_GRADIENT) {
current_vp->drawmode = DRMODE_FG;
lcd_gradient_rect(xpos, current_vp->width, ypos, h,
NUMLN_UNPACK(style), CURLN_UNPACK(style));
current_vp->fg_pattern = current_vp->lst_pattern;
}
else if (style & STYLE_COLORBAR) {
current_vp->drawmode = DRMODE_FG;
current_vp->fg_pattern = current_vp->lss_pattern;
lcd_fillrect(xpos, ypos, current_vp->width - xpos, h);
current_vp->fg_pattern = current_vp->lst_pattern;
}
else {
lcd_fillrect(x, ypos, current_vp->width - xrect, h);
current_vp->drawmode = (style & STYLE_INVERT) ?
(DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
}
if (str[0])
lcd_putsxyofs(xpos, ypos, offset, str);
current_vp->fg_pattern = oldfgcolor;
current_vp->bg_pattern = oldbgcolor;
#else
current_vp->drawmode = DRMODE_SOLID | ((style & STYLE_INVERT) ?
0 : DRMODE_INVERSEVID);
LCDFN(fillrect)(x, ypos, current_vp->width - xrect, h);
current_vp->drawmode ^= DRMODE_INVERSEVID;
if (str[0])
LCDFN(putsxyofs)(xpos, ypos, offset, str);
#endif
current_vp->drawmode = lastmode;
}
/* Formatting version of LCDFN(puts) */
void LCDFN(putsf)(int x, int y, const unsigned char *fmt, ...)
{
va_list ap;
char buf[256];
va_start(ap, fmt);
vsnprintf(buf, sizeof (buf), fmt, ap);
va_end(ap);
LCDFN(puts)(x, y, buf);
}
/*
* fills the rectangle formed by current_vp
**/
void LCDFN(fill_viewport)(void)
{
LCDFN(fillrect)(0, 0, current_vp->width, current_vp->height);
}
/*
* draws the borders of the current viewport
**/
void LCDFN(draw_border_viewport)(void)
{
LCDFN(drawrect)(0, 0, current_vp->width, current_vp->height);
}
void LCDFN(puts_scroll_style_offset)(int x, int y, const unsigned char *string,
int style, int x_offset)
{
LCDFN(puts_scroll_style_xyoffset)(x, y, string, style, x_offset, 0);
}
void LCDFN(puts_scroll_offset)(int x, int y, const unsigned char *string,
int offset)
{
LCDFN(puts_scroll_style_offset)(x, y, string, STYLE_DEFAULT, offset);
}
void LCDFN(puts_scroll)(int x, int y, const unsigned char *string)
{
LCDFN(puts_scroll_style)(x, y, string, STYLE_DEFAULT);
}
void LCDFN(puts_scroll_style_xyoffset)(int x, int y, const unsigned char *string,
int style, int x_offset, int y_offset)
{
struct scrollinfo* s;
char *end;
int w, h;
int len;
if ((unsigned)y >= (unsigned)current_vp->height)
return;
/* remove any previously scrolling line at the same location */
LCDFN(scroll_stop_line)(current_vp, y);
if (LCDFN(scroll_info).lines >= LCDM(SCROLLABLE_LINES)) return;
if (!string)
return;
LCDFN(puts_style_xyoffset)(x, y, string, style, x_offset, y_offset);
LCDFN(getstringsize)(string, &w, &h);
if (current_vp->width - x * 8 >= w)
return;
/* prepare scroll line */
s = &LCDFN(scroll_info).scroll[LCDFN(scroll_info).lines];
s->start_tick = current_tick + LCDFN(scroll_info).delay;
s->style = style;
strlcpy(s->line, string, sizeof s->line);
/* get width */
s->width = LCDFN(getstringsize)(s->line, &w, &h);
/* scroll bidirectional or forward only depending on the string
width */
if ( LCDFN(scroll_info).bidir_limit ) {
s->bidir = s->width < (current_vp->width) *
(100 + LCDFN(scroll_info).bidir_limit) / 100;
}
else
s->bidir = false;
if (!s->bidir) { /* add spaces if scrolling in the round */
strlcat(s->line, " ", sizeof s->line);
/* get new width incl. spaces */
s->width = LCDFN(getstringsize)(s->line, &w, &h);
}
end = strchr(s->line, '\0');
len = sizeof s->line - (end - s->line);
strlcpy(end, string, MIN(current_vp->width/2, len));
s->vp = current_vp;
s->y = y;
s->offset = x_offset;
s->startx = x * LCDFN(getstringsize)(" ", NULL, NULL);
s->y_offset = y_offset;
s->backward = false;
LCDFN(scroll_info).lines++;
}
void LCDFN(puts_style)(int x, int y, const unsigned char *str, int style)
{
LCDFN(puts_style_offset)(x, y, str, style, 0);
}
void LCDFN(puts)(int x, int y, const unsigned char *str)
{
LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, 0);
}
/* put a string at a given pixel position */
void LCDFN(putsxy)(int x, int y, const unsigned char *str)
{
LCDFN(putsxyofs)(x, y, 0, str);
}
/* put a string at a given pixel position, skipping first ofs pixel columns */
static void LCDFN(putsxyofs)(int x, int y, int ofs, const unsigned char *str)
{
unsigned short *ucs;
struct font* pf = font_get(current_vp->font);
int vp_flags = current_vp->flags;
int rtl_next_non_diac_width, last_non_diacritic_width;
if ((vp_flags & VP_FLAG_ALIGNMENT_MASK) != 0)
{
int w;
LCDFN(getstringsize)(str, &w, NULL);
/* center takes precedence */
if (vp_flags & VP_FLAG_ALIGN_CENTER)
{
x = ((current_vp->width - w)/ 2) + x;
if (x < 0)
x = 0;
}
else
{
x = current_vp->width - w - x;
x += ofs;
ofs = 0;
}
}
rtl_next_non_diac_width = 0;
last_non_diacritic_width = 0;
/* Mark diacritic and rtl flags for each character */
for (ucs = bidi_l2v(str, 1); *ucs; ucs++)
{
bool is_rtl, is_diac;
const unsigned char *bits;
int width, base_width, drawmode = 0, base_ofs = 0;
const unsigned short next_ch = ucs[1];
if (x >= current_vp->width)
break;
is_diac = is_diacritic(*ucs, &is_rtl);
/* Get proportional width and glyph bits */
width = font_get_width(pf, *ucs);
/* Calculate base width */
if (is_rtl)
{
/* Forward-seek the next non-diacritic character for base width */
if (is_diac)
{
if (!rtl_next_non_diac_width)
{
const unsigned short *u;
/* Jump to next non-diacritic char, and calc its width */
for (u = &ucs[1]; *u && is_diacritic(*u, NULL); u++);
rtl_next_non_diac_width = *u ? font_get_width(pf, *u) : 0;
}
base_width = rtl_next_non_diac_width;
}
else
{
rtl_next_non_diac_width = 0; /* Mark */
base_width = width;
}
}
else
{
if (!is_diac)
last_non_diacritic_width = width;
base_width = last_non_diacritic_width;
}
if (ofs > width)
{
ofs -= width;
continue;
}
if (is_diac)
{
/* XXX: Suggested by amiconn:
* This will produce completely wrong results if the original
* drawmode is DRMODE_COMPLEMENT. We need to pre-render the current
* character with all its diacritics at least (in mono) and then
* finally draw that. And we'll need an extra buffer that can hold
* one char's bitmap. Basically we can't just change the draw mode
* to something else irrespective of the original mode and expect
* the result to look as intended and with DRMODE_COMPLEMENT (which
* means XORing pixels), overdrawing this way will cause odd results
* if the diacritics and the base char both have common pixels set.
* So we need to combine the char and its diacritics in a temp
* buffer using OR, and then draw the final bitmap instead of the
* chars, without touching the drawmode
**/
drawmode = current_vp->drawmode;
current_vp->drawmode = DRMODE_FG;
base_ofs = (base_width - width) / 2;
}
bits = font_get_bits(pf, *ucs);
LCDFN(mono_bitmap_part)(bits, ofs, 0, width, x + base_ofs, y,
width - ofs, pf->height);
if (is_diac)
{
current_vp->drawmode = drawmode;
}
if (next_ch)
{
bool next_is_rtl;
bool next_is_diacritic = is_diacritic(next_ch, &next_is_rtl);
/* Increment if:
* LTR: Next char is not diacritic,
* RTL: Current char is non-diacritic and next char is diacritic */
if ((is_rtl && !is_diac) ||
(!is_rtl && (!next_is_diacritic || next_is_rtl)))
{
x += base_width - ofs;
ofs = 0;
}
}
}
}
#include "scroll_engine.h"
#ifndef LCDFN /* Not compiling for remote - define macros for main LCD. */
#define LCDFN(fn) lcd_ ## fn
#define FBFN(fn) fb_ ## fn
#define LCDM(ma) LCD_ ## ma
#define FBSIZE FRAMEBUFFER_SIZE
#define LCDNAME "lcd_"
#define LCDFB(x,y) FBADDR(x, y)
#define MAIN_LCD
#endif
/*** globals ***/
FBFN(data) LCDFN(static_framebuffer)[LCDM(FBHEIGHT)][LCDM(FBWIDTH)] IRAM_LCDFRAMEBUFFER;
FBFN(data) *LCDFN(framebuffer) = &LCDFN(static_framebuffer)[0][0];
static const FBFN(data) patterns[4] = {0xFFFF, 0xFF00, 0x00FF, 0x0000};
static FBFN(data) *backdrop = NULL;
static long backdrop_offset IDATA_ATTR = 0;
static struct viewport default_vp =
{
.x = 0,
.y = 0,
.width = LCDM(WIDTH),
.height = LCDM(HEIGHT),
.font = FONT_SYSFIXED,
.drawmode = DRMODE_SOLID,
