lib/widget/hline.c

lib/widget/hline.c
Manual pages: mc • mcdiff • mcedit • mcview
/* */
This source file includes following definitions.
hline_adjust_cols
hline_callback
hline_new
hline_set_text
hline_set_textv
   1 /*
   2    Widgets for the Midnight Commander
   3 
   4    Copyright (C) 1994-2026
   5    Free Software Foundation, Inc.
   6 
   7    Authors:
   8    Radek Doulik, 1994, 1995
   9    Miguel de Icaza, 1994, 1995
  10    Jakub Jelinek, 1995
  11    Andrej Borsenkow, 1996
  12    Norbert Warmuth, 1997
  13    Andrew Borodin <aborodin@vmail.ru>, 2009-2022
  14 
  15    This file is part of the Midnight Commander.
  16 
  17    The Midnight Commander is free software: you can redistribute it
  18    and/or modify it under the terms of the GNU General Public License as
  19    published by the Free Software Foundation, either version 3 of the License,
  20    or (at your option) any later version.
  21 
  22    The Midnight Commander is distributed in the hope that it will be useful,
  23    but WITHOUT ANY WARRANTY; without even the implied warranty of
  24    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25    GNU General Public License for more details.
  26 
  27    You should have received a copy of the GNU General Public License
  28    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  29  */
  30 
  31 /** \file hline.c
  32  *  \brief Source: WHLine widget (horizontal line)
  33  */
  34 
  35 #include <config.h>
  36 
  37 #include <stdarg.h>
  38 #include <stdlib.h>
  39 
  40 #include "lib/global.h"
  41 #include "lib/tty/tty.h"
  42 #include "lib/tty/color.h"
  43 #include "lib/skin.h"
  44 #include "lib/strutil.h"
  45 #include "lib/widget.h"
  46 
  47 /*** global variables ****************************************************************************/
  48 
  49 /*** file scope macro definitions ****************************************************************/
  50 
  51 /*** file scope type declarations ****************************************************************/
  52 
  53 /*** forward declarations (file scope functions) *************************************************/
  54 
  55 /*** file scope variables ************************************************************************/
  56 
  57 /* --------------------------------------------------------------------------------------------- */
  58 /*** file scope functions ************************************************************************/
  59 /* --------------------------------------------------------------------------------------------- */
  60 
  61 static void
  62 hline_adjust_cols (WHLine *l)
     /*   */
  63 {
  64     if (l->auto_adjust_cols)
  65     {
  66         Widget *wl = WIDGET (l);
  67         const Widget *o = CONST_WIDGET (wl->owner);
  68         WRect *w = &wl->rect;
  69         const WRect *wo = &o->rect;
  70 
  71         if (CONST_DIALOG (o)->compact)
  72         {
  73             w->x = wo->x;
  74             w->cols = wo->cols;
  75         }
  76         else
  77         {
  78             w->x = wo->x + 1;
  79             w->cols = wo->cols - 2;
  80         }
  81     }
  82 }
  83 
  84 /* --------------------------------------------------------------------------------------------- */
  85 
  86 static cb_ret_t
  87 hline_callback (Widget *w, Widget *sender, widget_msg_t msg, int parm, void *data)
     /*   */
  88 {
  89     WHLine *l = HLINE (w);
  90 
  91     switch (msg)
  92     {
  93     case MSG_INIT:
  94         hline_adjust_cols (l);
  95         return MSG_HANDLED;
  96 
  97     case MSG_RESIZE:
  98         hline_adjust_cols (l);
  99         w->rect.y = RECT (data)->y;
 100         return MSG_HANDLED;
 101 
 102     case MSG_DRAW:
 103     {
 104         const int *colors = widget_get_colors (w);
 105 
 106         tty_setcolor (colors[DLG_COLOR_FRAME]);
 107 
 108         tty_draw_hline (w->rect.y, w->rect.x + 1, mc_tty_frm[MC_TTY_FRM_HORIZ], w->rect.cols - 2);
 109 
 110         if (l->auto_adjust_cols)
 111         {
 112             widget_gotoyx (w, 0, 0);
 113             tty_print_char (mc_tty_frm[MC_TTY_FRM_DLEFTMIDDLE]);
 114             widget_gotoyx (w, 0, w->rect.cols - 1);
 115             tty_print_char (mc_tty_frm[MC_TTY_FRM_DRIGHTMIDDLE]);
 116         }
 117 
 118         if (l->text != NULL)
 119         {
 120             int text_width;
 121 
 122             text_width = str_term_width1 (l->text);
 123             widget_gotoyx (w, 0, (w->rect.cols - text_width) / 2);
 124             tty_print_string (l->text);
 125         }
 126         return MSG_HANDLED;
 127     }
 128 
 129     case MSG_DESTROY:
 130         g_free (l->text);
 131         return MSG_HANDLED;
 132 
 133     default:
 134         return widget_default_callback (w, sender, msg, parm, data);
 135     }
 136 }
 137 
 138 /* --------------------------------------------------------------------------------------------- */
 139 /*** public functions ****************************************************************************/
 140 /* --------------------------------------------------------------------------------------------- */
 141 
 142 WHLine *
 143 hline_new (int y, int x, int width)
     /*   */
 144 {
 145     WRect r = { y, x, 1, width };
 146     WHLine *l;
 147     Widget *w;
 148 
 149     l = g_new (WHLine, 1);
 150     w = WIDGET (l);
 151     r.cols = width < 0 ? 1 : width;
 152     widget_init (w, &r, hline_callback, NULL);
 153     l->text = NULL;
 154     l->auto_adjust_cols = (width < 0);
 155 
 156     return l;
 157 }
 158 
 159 /* --------------------------------------------------------------------------------------------- */
 160 
 161 void
 162 hline_set_text (WHLine *l, const char *text)
     /*   */
 163 {
 164     g_free (l->text);
 165 
 166     if (text == NULL || *text == '\0')
 167         l->text = NULL;
 168     else
 169         l->text = g_strdup (text);
 170 
 171     widget_draw (WIDGET (l));
 172 }
 173 
 174 /* --------------------------------------------------------------------------------------------- */
 175 
 176 void
 177 hline_set_textv (WHLine *l, const char *format, ...)
     /*   */
 178 {
 179     va_list args;
 180     char buf[BUF_1K];  // FIXME: is it enough?
 181 
 182     va_start (args, format);
 183     g_vsnprintf (buf, sizeof (buf), format, args);
 184     va_end (args);
 185 
 186     hline_set_text (l, buf);
 187 }
 188 
 189 /* --------------------------------------------------------------------------------------------- */
/* */
root/lib/widget/hline.c

DEFINITIONS
