ui/tui/progress.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include <linux/kernel.h>
0003 #include "../progress.h"
0004 #include "../libslang.h"
0005 #include "../ui.h"
0006 #include "tui.h"
0007 #include "units.h"
0008 #include "../browser.h"
0009
0010 static void __tui_progress__init(struct ui_progress *p)
0011 {
0012     p->next = p->step = p->total / (SLtt_Screen_Cols - 2) ?: 1;
0013 }
0014
0015 static int get_title(struct ui_progress *p, char *buf, size_t size)
0016 {
0017     char buf_cur[20];
0018     char buf_tot[20];
0019     int ret;
0020
0021     ret  = unit_number__scnprintf(buf_cur, sizeof(buf_cur), p->curr);
0022     ret += unit_number__scnprintf(buf_tot, sizeof(buf_tot), p->total);
0023
0024     return ret + scnprintf(buf, size, "%s [%s/%s]",
0025                    p->title, buf_cur, buf_tot);
0026 }
0027
0028 static void tui_progress__update(struct ui_progress *p)
0029 {
0030     char buf[100], *title = (char *) p->title;
0031     int bar, y;
0032     /*
0033      * FIXME: We should have a per UI backend way of showing progress,
0034      * stdio will just show a percentage as NN%, etc.
0035      */
0036     if (use_browser <= 0)
0037         return;
0038
0039     if (p->total == 0)
0040         return;
0041
0042     if (p->size) {
0043         get_title(p, buf, sizeof(buf));
0044         title = buf;
0045     }
0046
0047     ui__refresh_dimensions(false);
0048     pthread_mutex_lock(&ui__lock);
0049     y = SLtt_Screen_Rows / 2 - 2;
0050     SLsmg_set_color(0);
0051     SLsmg_draw_box(y, 0, 3, SLtt_Screen_Cols);
0052     SLsmg_gotorc(y++, 1);
0053     SLsmg_write_string(title);
0054     SLsmg_fill_region(y, 1, 1, SLtt_Screen_Cols - 2, ' ');
0055     SLsmg_set_color(HE_COLORSET_SELECTED);
0056     bar = ((SLtt_Screen_Cols - 2) * p->curr) / p->total;
0057     SLsmg_fill_region(y, 1, 1, bar, ' ');
0058     SLsmg_refresh();
0059     pthread_mutex_unlock(&ui__lock);
0060 }
0061
0062 static void tui_progress__finish(void)
0063 {
0064     int y;
0065
0066     if (use_browser <= 0)
0067         return;
0068
0069     ui__refresh_dimensions(false);
0070     pthread_mutex_lock(&ui__lock);
0071     y = SLtt_Screen_Rows / 2 - 2;
0072     SLsmg_set_color(0);
0073     SLsmg_fill_region(y, 0, 3, SLtt_Screen_Cols, ' ');
0074     SLsmg_refresh();
0075     pthread_mutex_unlock(&ui__lock);
0076 }
0077
0078 static struct ui_progress_ops tui_progress__ops = {
0079     .init   = __tui_progress__init,
0080     .update = tui_progress__update,
0081     .finish = tui_progress__finish,
0082 };
0083
0084 void tui_progress__init(void)
0085 {
0086     ui_progress__ops = &tui_progress__ops;
0087 }