/* Assign pairs by request */
short owl_fmtext_get_colorpair(int fg, int bg)
{
owl_colorpair_mgr *cpmgr;
short pair, default_bg;
/* Sanity (Bounds) Check */
if (fg > COLORS || fg < OWL_COLOR_DEFAULT) fg = OWL_COLOR_DEFAULT;
if (bg > COLORS || bg < OWL_COLOR_DEFAULT) bg = OWL_COLOR_DEFAULT;
#ifdef HAVE_USE_DEFAULT_COLORS
if (fg == OWL_COLOR_DEFAULT) fg = -1;
default_bg = OWL_COLOR_DEFAULT;
#else
if (fg == OWL_COLOR_DEFAULT) fg = 0;
if (bg == OWL_COLOR_DEFAULT) bg = 0;
default_bg = COLOR_BLACK;
#endif
/* looking for a pair we already set up for this draw. */
cpmgr = owl_global_get_colorpair_mgr(&g);
pair = cpmgr->pairs[fg+1][bg+1];
if (!(pair != -1 && pair < cpmgr->next)) {
/* If we didn't find a pair, search for a free one to assign. */
pair = (cpmgr->next < COLOR_PAIRS) ? cpmgr->next : -1;
if (pair != -1) {
/* We found a free pair, initialize it. */
init_pair(pair, fg, bg);
cpmgr->pairs[fg+1][bg+1] = pair;
cpmgr->next++;
}
else if (bg != OWL_COLOR_DEFAULT) {
/* We still don't have a pair, drop the background color. Too bad. */
owl_function_debugmsg("colorpairs: color shortage - dropping background color.");
pair = owl_fmtext_get_colorpair(fg, OWL_COLOR_DEFAULT);
}
else {
/* We still don't have a pair, defaults all around. */
owl_function_debugmsg("colorpairs: color shortage - dropping foreground and background color.");
pair = 0;
}
}
return pair;
}
/* Reset used list */
void owl_fmtext_reset_colorpairs(void)
{
if (owl_global_get_hascolors(&g)) {
short i, j;
owl_colorpair_mgr *cpmgr = owl_global_get_colorpair_mgr(&g);
cpmgr->next = 8;
/* The test is <= because we allocated COLORS+1 entries. */
for(i = 0; i <= COLORS; i++) {
for(j = 0; j <= COLORS; j++) {
cpmgr->pairs[i][j] = -1;
}
}
for(i = 0; i < 8; i++) {
short fg, bg;
if (i >= COLORS) continue;
pair_content(i, &fg, &bg);
cpmgr->pairs[fg+1][bg+1] = i;
}
}
}
static int owl_refresh_pre_select_action(owl_ps_action *a, void *data)
{
owl_colorpair_mgr *cpmgr;
/* if a resize has been scheduled, deal with it */
owl_global_check_resize(&g);
/* update the terminal if we need to */
owl_window_redraw_scheduled();
/* On colorpair shortage, reset and redraw /everything/. NOTE: if
* the current screen uses too many colorpairs, this draws
* everything twice. But this is unlikely; COLOR_PAIRS is 64 with
* 8+1 colors, and 256^2 with 256+1 colors. (+1 for default.) */
cpmgr = owl_global_get_colorpair_mgr(&g);
if (cpmgr->overflow) {
owl_function_debugmsg("colorpairs: color shortage; reset pairs and redraw. COLOR_PAIRS = %d", COLOR_PAIRS);
owl_fmtext_reset_colorpairs(cpmgr);
owl_function_full_redisplay();
owl_window_redraw_scheduled();
}
return 0;
}
