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/*
* STFL - The Structured Terminal Forms Language/Library
* Copyright (C) 2006, 2007 Clifford Wolf <clifford@clifford.at>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* style.c: Helper functions for text colors and attributes
*/
#include "stfl_internals.h"
#include <string.h>
#include <stdlib.h>
#include <wchar.h>
static wchar_t *wcssep(wchar_t **stringp, const wchar_t *delim) {
register wchar_t *tmp=*stringp;
register wchar_t *tmp2=tmp;
register const wchar_t *tmp3;
if (!*stringp) return 0;
for (tmp2=tmp; *tmp2; ++tmp2) {
for (tmp3=delim; *tmp3; ++tmp3)
if (*tmp2==*tmp3) { /* delimiter found */
*tmp2=0;
*stringp=tmp2+1;
return tmp;
}
}
*stringp=0;
return tmp;
}
#define STFL_MAX_COLOR_PAIRS 256
static int stfl_colorpair_bg[STFL_MAX_COLOR_PAIRS];
static int stfl_colorpair_fg[STFL_MAX_COLOR_PAIRS];
int stfl_colorpair_counter = 1;
void stfl_style(WINDOW *win, const wchar_t *style)
{
int bg_color = -1, fg_color = -1, attr = A_NORMAL;
style += wcsspn(style, L" \t");
while (*style)
{
int field_len = wcscspn(style, L",");
wchar_t field[field_len+1];
wmemcpy(field, style, field_len);
field[field_len] = 0;
style += field_len;
if (*style == L',')
style++;
wchar_t *sepp = field;
wchar_t *key = wcssep(&sepp, L"=");
wchar_t *value = wcssep(&sepp, L"");
if (!key || !value) continue;
key += wcsspn(key, L" \t");
key = wcssep(&key, L" \t");
value += wcsspn(value, L" \t");
value = wcssep(&value, L" \t");
if (!wcscmp(key, L"bg") || !wcscmp(key, L"fg"))
{
int color = -1;
if (!wcscmp(value, L"black"))
color = COLOR_BLACK;
else
if (!wcscmp(value, L"red"))
color = COLOR_RED;
else
if (!wcscmp(value, L"green"))
color = COLOR_GREEN;
else
if (!wcscmp(value, L"yellow"))
color = COLOR_YELLOW;
else
if (!wcscmp(value, L"blue"))
color = COLOR_BLUE;
else
if (!wcscmp(value, L"magenta"))
color = COLOR_MAGENTA;
else
if (!wcscmp(value, L"cyan"))
color = COLOR_CYAN;
else
if (!wcscmp(value, L"white"))
color = COLOR_WHITE;
else
if (!wcsncmp(value, L"color", 5)) {
color = wcstoul(value + 5, NULL, 0);
}
else {
fprintf(stderr, "STFL Style Error: Unknown %ls color: '%ls'\n", key, value);
abort();
}
if (!wcscmp(key, L"bg"))
bg_color = color;
else
fg_color = color;
}
else
if (!wcscmp(key, L"attr"))
{
if (!wcscmp(value, L"standout"))
attr |= A_STANDOUT;
else
if (!wcscmp(value, L"underline"))
attr |= A_UNDERLINE;
else
if (!wcscmp(value, L"reverse"))
attr |= A_REVERSE;
else
if (!wcscmp(value, L"blink"))
attr |= A_BLINK;
else
if (!wcscmp(value, L"dim"))
attr |= A_DIM;
else
if (!wcscmp(value, L"bold"))
attr |= A_BOLD;
else
if (!wcscmp(value, L"protect"))
attr |= A_PROTECT;
else
if (!wcscmp(value, L"invis"))
attr |= A_INVIS;
else {
fprintf(stderr, "STFL Style Error: Unknown attribute: '%ls'\n", value);
abort();
}
}
else {
fprintf(stderr, "STFL Style Error: Unknown keyword: '%ls'\n", key);
abort();
}
}
short f, b;
pair_content(0, &f, &b);
if (fg_color < 0 || fg_color >= COLORS)
fg_color = f;
if (bg_color < 0 || bg_color >= COLORS)
bg_color = b;
int i;
for (i=1; i<stfl_colorpair_counter; i++) {
if (stfl_colorpair_fg[i] == fg_color && stfl_colorpair_bg[i] == bg_color)
break;
}
if (i == stfl_colorpair_counter) {
if (i == COLOR_PAIRS) {
fprintf(stderr, "Ncurses limit of color pairs (%d) reached!\n", COLOR_PAIRS);
abort();
}
if (i == STFL_MAX_COLOR_PAIRS) {
fprintf(stderr, "Internal STFL limit of color pairs (%d) reached!\n", STFL_MAX_COLOR_PAIRS);
abort();
}
init_pair(i, fg_color, bg_color);
stfl_colorpair_fg[i] = fg_color;
stfl_colorpair_bg[i] = bg_color;
stfl_colorpair_counter++;
}
wattrset(win, attr);
wcolor_set(win, i, NULL);
}
void stfl_widget_style(struct stfl_widget *w, struct stfl_form *f, WINDOW *win)
{
const wchar_t *style = L"";
if (f->current_focus_id == w->id)
style = stfl_widget_getkv_str(w, L"style_focus", L"");
if (*style == 0)
style = stfl_widget_getkv_str(w, L"style_normal", L"");
stfl_style(win, style);
}
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