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Fast redraw on up/down key navigation (#431)

This commit is contained in:
Anna Arad 2020-01-12 19:15:55 +02:00 committed by Mischievous Meerkat
parent 1eb2ab2478
commit 7948db6a64
1 changed files with 43 additions and 1 deletions
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44
src/nnn.c
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@ -309,7 +309,7 @@ static settings cfg = {
static context g_ctx[CTX_MAX] __attribute__ ((aligned));
static int ndents, cur, curscroll, total_dents = ENTRY_INCR;
static int ndents, cur, last, curscroll, last_curscroll, total_dents = ENTRY_INCR;
static int xlines, xcols;
static int nselected;
static uint idle;
@ -337,6 +337,7 @@ static kv plug[PLUGIN_MAX];
static uchar g_tmpfplen;
static uchar blk_shift = BLK_SHIFT_512;
static regex_t archive_re;
static bool is_move_op = FALSE;
/* Retain old signal handlers */
#ifdef __linux__
@ -4089,14 +4090,19 @@ static void populate(char *path, char *lastname)
move_cursor(0, 0);
else
move_cursor(dentfind(lastname, ndents), 0);
// Force full redraw
last_curscroll = -1;
}
static void move_cursor(int target, int ignore_scrolloff)
{
int delta, scrolloff, onscreen = xlines - 4;
last_curscroll = curscroll;
target = MAX(0, MIN(ndents - 1, target));
delta = target - cur;
last = cur;
cur = target;
if (!ignore_scrolloff) {
scrolloff = MIN(SCROLLOFF, onscreen >> 1);
@ -4280,6 +4286,8 @@ static void statusbar(char *path)
((g_states & STATE_RANGESEL) ? "*" : (nselected ? xitoa(nselected) : "")),
sort, buf, get_lsperms(pent->mode), coolsize(pent->size), ptr, fname);
}
clrtoeol();
}
static void redraw(char *path)
@ -4292,6 +4300,39 @@ static void redraw(char *path)
int i;
char *ptr = path;
// Fast redraw
if (is_move_op && last_curscroll == curscroll) {
is_move_op = FALSE;
/* Calculate the number of cols available to print entry name */
if (cfg.showdetail) {
/* Fallback to light mode if less than 35 columns */
if (ncols < 36) {
cfg.showdetail ^= 1;
printptr = &printent;
ncols -= 3; /* Preceding space, indicator, newline */
} else
ncols -= 35;
} else
ncols -= 3; /* Preceding space, indicator, newline */
attron(COLOR_PAIR(cfg.curctx + 1) | A_BOLD);
cfg.dircolor = 1;
move(2 + last - curscroll, 0);
printptr(&dents[last], ncols, false);
move(2 + cur - curscroll, 0);
printptr(&dents[cur], ncols, true);
/* Must reset e.g. no files in dir */
if (cfg.dircolor) {
attroff(COLOR_PAIR(cfg.curctx + 1) | A_BOLD);
cfg.dircolor = 0;
}
statusbar(path);
return;
}
/* Clear screen */
erase();
@ -4761,6 +4802,7 @@ nochange:
case SEL_HOME: // fallthrough
case SEL_END: // fallthrough
case SEL_FIRST:
is_move_op = TRUE;
handle_screen_move(sel);
break;
case SEL_CDHOME: // fallthrough