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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
INFORMA��ES DE LICEN�A:
Este programa � um software de livre distribui��o; voc� pode
redistribu�-lo e/ou modific�-lo sob os termos da GNU General
Public License, conforme publicado pela Free Software Foundation,
pela vers�o 2 da licen�a ou qualquer vers�o posterior.
Este programa � distribu�do na esperan�a de que ele ser� �til
aos seus usu�rios, por�m, SEM QUAISQUER GARANTIAS; sem sequer
a garantia impl�cita de COMERCIABILIDADE ou DE ADEQUA��O A
QUALQUER FINALIDADE ESPEC�FICA. Consulte a GNU General Public
License para obter mais detalhes (uma c�pia acompanha este
programa, armazenada no arquivo COPYING).
*/
#include "bores/bores.h"
#include <stdbool.h>
#include <ncurses.h>
#include <string.h>
#include "commands.h"
#include "menubar.h"
/* menu colors */
#define MENU_ATT_NORMAL 0x07
#define MENU_ATT_SEL 0xF1
#define MENU_ATT_ACCEL_NORMAL 0x17
#define MENU_ATT_ACCEL_SEL 0xE1
#define MAX_ITEMS_PER_MENU 32
typedef struct MenuItem_ {
char accel; /* accelerator (shortcut) char */
const char *caption; /* text of the item. If text is "", it is a separator
* In that case all remaining fields have no meaning */
int command; /* the command that this item triggers when
* selected - this value will be returned by
* menubar_show */
const char *desc; /* description of the item, which will appear at
* the bottom part of the screen when the item
* is highlighted */
} MenuItem;
typedef struct Menu_ {
const char *caption; /* text */
int startcol; /* column at which the left edge of this menu is
* placed onscreen */
int menu_h, menu_w; /* menu dimensions. If 0, calculated at run-time */
int item_count; /* how many items this menu has */
MenuItem item[MAX_ITEMS_PER_MENU]; /* vector of items */
} Menu;
/* menu data (included as a separate file for better organization) */
#include "menubar-items.inc"
/* defines menu[] as an array of menu's, and menu_count. */
/* menu state */
static int open_menu; /* which menu is open */
static int menu_sel; /* which item is currently selected on the
* currently open menu */
/* declaration of internal functions */
static void menubar_paint(); /* paints menu onscreen */
static void menuitem_print(const char *caption, bool sel, int minlen);
static void menu_calc_dims(Menu *m);
static bool chr_icomp(char c1, char c2); /* compares characters,
* case-insensitive */
int menubar_show(int startm) {
int ch, i;
int cmd = 0; bool quit = false;
Menu *omenu;
menu_sel = 0;
open_menu = startm;
if (open_menu < 0) open_menu = 0;
if (open_menu >= menu_count) open_menu = menu_count - 1;
push_screen();
while (!quit) {
omenu = &menu[open_menu];
menubar_paint();
ch = getch();
switch (ch) {
case KEY_LEFT: if (--open_menu < 0) open_menu = menu_count-1;
menu_sel = 0;
break;
case KEY_RIGHT: if (++open_menu >= menu_count) open_menu = 0;
menu_sel = 0;
break;
case KEY_UP:
do {
if (--menu_sel < 0) menu_sel = omenu->item_count-1;
} while (!*(omenu->item[menu_sel].caption));
break;
case KEY_DOWN:
do {
if (++menu_sel >= omenu->item_count) menu_sel = 0;
} while (!*(omenu->item[menu_sel].caption));
break;
case 10: quit = true; cmd = omenu->item[menu_sel].command;
break;
case 27: quit = true; cmd = COMMAND_UNDEFINED;
break;
}
if (ch > KEY_F0 && ch <= KEY_F(12) && (ch - KEY_F0 - 1) < menu_count) {
open_menu = ch - KEY_F0 - 1;
menu_sel = 0;
}
/* handle accelerator keys */
for (i = 0; i < omenu->item_count; i++) {
if (chr_icomp(omenu->item[i].accel, ch)) {
/* item selected by accelerator key */
cmd = omenu->item[i].command;
quit = true;
break;
}
}
}
restore_screen();
pop_screen();
refresh();
return cmd;
}
static bool chr_icomp(char c1, char c2) {
c1 = (c1 >= 'A' && c1 <= 'Z') ? c1 - 'A' + 'a' : c1;
c2 = (c2 >= 'A' && c2 <= 'Z') ? c2 - 'A' + 'a' : c2;
return (c1 == c2);
}
static void menubar_paint() {
int i;
Menu *omenu;
restore_screen();
/* paint the bar at the top of the screen */
kurses_color_at(MENU_ATT_NORMAL);
draw_hline(0, 0, kurses_width(), ' ', ' ', ' ');
for (i = 0; i < menu_count; i++) {
kurses_move(menu[i].startcol, 0);
menuitem_print(menu[i].caption, i == open_menu, -1);
}
omenu = &menu[open_menu];
/* if open menu's dimensions have not yet been calculated, do so */
if (!omenu->menu_h) menu_calc_dims(omenu);
/* paint the open menu */
kurses_color_at(MENU_ATT_NORMAL);
draw_window(omenu->startcol, 1, omenu->menu_w + 2, omenu->menu_h + 2, "");
for (i = 0; i < omenu->item_count; i++) {
kurses_move(omenu->startcol+1, i + 2);
menuitem_print(omenu->item[i].caption, i == menu_sel, omenu->menu_w);
}
/* paint the description line */
kurses_move(0, kurses_height()-1);
kurses_color_at(MENU_ATT_NORMAL);
i = strlen(omenu->item[menu_sel].desc);
addstr(omenu->item[menu_sel].desc);
while (i++ < kurses_width()) addch(' ');
kurses_move(kurses_width()-1, kurses_height()-1);
refresh();
}
static void menuitem_print(const char *s, bool sel, int minlen) {
bool next_is_accel = false;
int printed = 0;
while (*s || (printed < minlen)) {
if (*s == '&') {
next_is_accel = true;
s++;
continue;
}
kurses_color_at(sel ?
( next_is_accel ? MENU_ATT_ACCEL_SEL : MENU_ATT_SEL ) :
( next_is_accel ? MENU_ATT_ACCEL_NORMAL : MENU_ATT_NORMAL ));
addch(*s ? *s : ' ');
printed++;
next_is_accel = false;
if (*s) s++;
}
}
static void menu_calc_dims(Menu *m) {
int i;
int width = 1, len = 0;
for (i = 0; i < m->item_count; i++) {
len = strlen(m->item[i].caption);
if (len > width) width = len;
}
m->menu_h = m->item_count;
m->menu_w = width;
}
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