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/*
* $Id: arrows.c,v 1.51 2013/09/02 15:10:09 tom Exp $
*
* arrows.c -- draw arrows to indicate end-of-range for lists
*
* Copyright 2000-2012,2013 Thomas E. Dickey
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License, version 2.1
* as published by the Free Software Foundation.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to
* Free Software Foundation, Inc.
* 51 Franklin St., Fifth Floor
* Boston, MA 02110, USA.
*/
#include <dialog.h>
#ifdef USE_WIDE_CURSES
#if defined(CURSES_WACS_ARRAY) && !defined(CURSES_WACS_SYMBOLS)
/* workaround for NetBSD 5.1 curses */
#undef WACS_DARROW
#undef WACS_UARROW
#define WACS_DARROW &(CURSES_WACS_ARRAY['.'])
#define WACS_UARROW &(CURSES_WACS_ARRAY['-'])
#endif
#define add_acs(win, code) wadd_wch(win, W ## code)
#else
#define add_acs(win, code) waddch(win, dlg_boxchar(code))
#endif
/* size of decorations */
#define ON_LEFT 4
#define ON_RIGHT 3
#ifdef HAVE_COLOR
static chtype
merge_colors(chtype foreground, chtype background)
{
chtype result = foreground;
if ((foreground & A_COLOR) != (background & A_COLOR)) {
short fg_f, bg_f;
short fg_b, bg_b;
short fg_pair = (short) PAIR_NUMBER(foreground);
short bg_pair = (short) PAIR_NUMBER(background);
if (pair_content(fg_pair, &fg_f, &bg_f) != ERR
&& pair_content(bg_pair, &fg_b, &bg_b) != ERR) {
result &= ~A_COLOR;
result |= dlg_color_pair(fg_f, bg_b);
}
}
return result;
}
#else
#define merge_colors(f,b) (f)
#endif
/*
* If we have help-line text, e.g., from "--hline", draw it between the other
* decorations at the bottom of the dialog window.
*/
void
dlg_draw_helpline(WINDOW *win, bool decorations)
{
int cur_x, cur_y;
int bottom;
if (dialog_vars.help_line != 0
&& dialog_vars.help_line[0] != 0
&& (bottom = getmaxy(win) - 1) > 0) {
chtype attr = A_NORMAL;
int cols = dlg_count_columns(dialog_vars.help_line);
int other = decorations ? (ON_LEFT + ON_RIGHT) : 0;
int avail = (getmaxx(win) - other - 2);
int limit = dlg_count_real_columns(dialog_vars.help_line) + 2;
if (limit < avail) {
getyx(win, cur_y, cur_x);
other = decorations ? ON_LEFT : 0;
(void) wmove(win, bottom, other + (avail - limit) / 2);
waddch(win, '[');
dlg_print_text(win, dialog_vars.help_line, cols, &attr);
waddch(win, ']');
wmove(win, cur_y, cur_x);
}
}
}
void
dlg_draw_arrows2(WINDOW *win,
int top_arrow,
int bottom_arrow,
int x,
int top,
int bottom,
chtype attr,
chtype borderattr)
{
chtype save = dlg_get_attrs(win);
int cur_x, cur_y;
int limit_x = getmaxx(win);
bool draw_top = TRUE;
bool is_toplevel = (wgetparent(win) == stdscr);
getyx(win, cur_y, cur_x);
/*
* If we're drawing a centered title, do not overwrite with the arrows.
*/
if (dialog_vars.title && is_toplevel && (top - getbegy(win)) < MARGIN) {
int have = (limit_x - dlg_count_columns(dialog_vars.title)) / 2;
int need = x + 5;
if (need > have)
draw_top = FALSE;
}
if (draw_top) {
(void) wmove(win, top, x);
if (top_arrow) {
(void) wattrset(win, merge_colors(uarrow_attr, attr));
(void) add_acs(win, ACS_UARROW);
(void) waddstr(win, "(-)");
} else {
(void) wattrset(win, attr);
(void) whline(win, dlg_boxchar(ACS_HLINE), ON_LEFT);
}
}
mouse_mkbutton(top, x - 1, 6, KEY_PPAGE);
(void) wmove(win, bottom, x);
if (bottom_arrow) {
(void) wattrset(win, merge_colors(darrow_attr, borderattr));
(void) add_acs(win, ACS_DARROW);
(void) waddstr(win, "(+)");
} else {
(void) wattrset(win, borderattr);
(void) whline(win, dlg_boxchar(ACS_HLINE), ON_LEFT);
}
mouse_mkbutton(bottom, x - 1, 6, KEY_NPAGE);
(void) wmove(win, cur_y, cur_x);
wrefresh(win);
(void) wattrset(win, save);
}
void
dlg_draw_scrollbar(WINDOW *win,
long first_data,
long this_data,
long next_data,
long total_data,
int left,
int right,
int top,
int bottom,
chtype attr,
chtype borderattr)
{
char buffer[80];
int percent;
int len;
int oldy, oldx;
chtype save = dlg_get_attrs(win);
int top_arrow = (first_data != 0);
int bottom_arrow = (next_data < total_data);
getyx(win, oldy, oldx);
dlg_draw_helpline(win, TRUE);
if (bottom_arrow || top_arrow || dialog_state.use_scrollbar) {
percent = (!total_data
? 100
: (int) ((next_data * 100)
/ total_data));
if (percent < 0)
percent = 0;
else if (percent > 100)
percent = 100;
(void) wattrset(win, position_indicator_attr);
(void) sprintf(buffer, "%d%%", percent);
(void) wmove(win, bottom, right - 7);
(void) waddstr(win, buffer);
if ((len = dlg_count_columns(buffer)) < 4) {
(void) wattrset(win, border_attr);
whline(win, dlg_boxchar(ACS_HLINE), 4 - len);
}
}
#define BARSIZE(num) (int) (0.5 + (double) ((all_high * (int) (num)) / (double) total_data))
#define ORDSIZE(num) (int) ((double) ((all_high * (int) (num)) / (double) all_diff))
if (dialog_state.use_scrollbar) {
int all_high = (bottom - top - 1);
this_data = MAX(0, this_data);
if (total_data > 0 && all_high > 0) {
int all_diff = (int) (total_data + 1);
int bar_diff = (int) (next_data + 1 - this_data);
int bar_high;
int bar_y;
bar_high = ORDSIZE(bar_diff);
if (bar_high <= 0)
bar_high = 1;
if (bar_high < all_high) {
int bar_last = BARSIZE(next_data);
wmove(win, top + 1, right);
(void) wattrset(win, save);
wvline(win, ACS_VLINE | A_REVERSE, all_high);
bar_y = ORDSIZE(this_data);
if (bar_y >= bar_last && bar_y > 0)
bar_y = bar_last - 1;
if (bar_last - bar_y > bar_high && bar_high > 1)
++bar_y;
bar_last = MIN(bar_last, all_high);
wmove(win, top + 1 + bar_y, right);
(void) wattrset(win, position_indicator_attr);
wattron(win, A_REVERSE);
#if defined(WACS_BLOCK) && defined(NCURSES_VERSION) && defined(USE_WIDE_CURSES)
wvline_set(win, WACS_BLOCK, bar_last - bar_y);
#else
wvline(win, ACS_BLOCK, bar_last - bar_y);
#endif
}
}
}
dlg_draw_arrows2(win,
top_arrow,
bottom_arrow,
left + ARROWS_COL,
top,
bottom,
attr,
borderattr);
(void) wattrset(win, save);
wmove(win, oldy, oldx);
}
void
dlg_draw_arrows(WINDOW *win,
int top_arrow,
int bottom_arrow,
int x,
int top,
int bottom)
{
dlg_draw_helpline(win, TRUE);
dlg_draw_arrows2(win,
top_arrow,
bottom_arrow,
x,
top,
bottom,
menubox_border2_attr,
menubox_border_attr);
}
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