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/*
Copyright (c) 2003 Bruno T. C. de Oliveira
LICENSE INFORMATION:
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 program 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
General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Copyright (c) 2002 Bruno T. C. de Oliveira
INFORMAES DE LICENA:
Este programa um software de livre distribuio; voc pode
redistribu-lo e/ou modific-lo sob os termos da GNU General
Public License, conforme publicado pela Free Software Foundation,
pela verso 2 da licena ou qualquer verso posterior.
Este programa distribudo na esperana de que ele ser til
aos seus usurios, porm, SEM QUAISQUER GARANTIAS; sem sequer
a garantia implcita de COMERCIABILIDADE ou DE ADEQUAO A
QUALQUER FINALIDADE ESPECFICA. Consulte a GNU General Public
License para obter mais detalhes (uma cpia acompanha este
programa, armazenada no arquivo COPYING).
*/
#include "bores/bores.h"
#include <ncurses.h>
#include <stdlib.h>
#include "absmenu.h"
AbsMenu *menu_create(int *ic, int x0, int y0, int w, int h,
int attr_sel, int attr_unsel,
void (*painter)(int, struct _AbsMenu *))
{
AbsMenu *new_menu = zalloc(sizeof(struct _AbsMenu));
new_menu->item_count = ic ? ic : &(new_menu->__ic);
new_menu->x0 = x0;
new_menu->y0 = y0;
new_menu->w = w;
new_menu->h = h;
new_menu->attr_sel = attr_sel;
new_menu->attr_unsel = attr_unsel;
new_menu->painter = painter;
return new_menu;
}
void menu_destroy(AbsMenu *m) {
if (m) free(m);
}
void menu_set_count(AbsMenu *m, int i) {
m->__ic = i;
}
int menu_get_count(AbsMenu *m) {
return *(m->item_count);
}
void menu_paint(AbsMenu *m) {
int i; int index; int j;
int sely = m->y0;
for (i = 0; i < m->h; i++) {
index = i + m->item_at_top;
if (index == m->sel_item) sely = m->y0 + i;
kurses_move(m->x0, m->y0 + i);
kurses_color_at((m->sel_item == index) ? m->attr_sel : m->attr_unsel);
for (j = 0; j < m->w; j++) addch(' ');
kurses_move(m->x0, m->y0 + i);
if (index >= 0 && index < *(m->item_count)) (*m->painter)(index, m);
}
/* place cursor on currently selected item */
kurses_move(m->x0, sely);
}
static void menu_correct(AbsMenu *m) {
/* corrige m->sel_item */
while (m->sel_item < 0) m->sel_item = 0;
while (m->sel_item >= *(m->item_count)) m->sel_item = -1 + *(m->item_count);
/* corrige m->item_at_top de forma que o item selecionado
* seja visvel */
if (m->item_at_top > m->sel_item)
m->item_at_top = m->sel_item;
else if (m->sel_item >= m->item_at_top + m->h)
m->item_at_top = m->sel_item - m->h + 1;
}
void menu_handle_key(AbsMenu *m, int ch) {
switch (ch) {
case KEY_UP: m->sel_item--; break;
case KEY_DOWN: m->sel_item++; break;
case KEY_NPAGE: m->sel_item += m->h; break;
case KEY_PPAGE: m->sel_item -= m->h; break;
}
menu_correct(m);
}
void menu_select_item(AbsMenu *m, int i) {
m->sel_item = i;
menu_correct(m);
}
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