lib/widget/frame.c

   1 /*
   2    Widgets for the Midnight Commander
   3
   4    Copyright (C) 2020-2024
   5    The Free Software Foundation, Inc.
   6
   7    Authors:
   8    Andrew Borodin <aborodin@vmail.ru>, 2020-2022
   9
  10    This file is part of the Midnight Commander.
  11
  12    The Midnight Commander is free software: you can redistribute it
  13    and/or modify it under the terms of the GNU General Public License as
  14    published by the Free Software Foundation, either version 3 of the License,
  15    or (at your option) any later version.
  16
  17    The Midnight Commander is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24  */
  25
  26 /** \file frame.c
  27  *  \brief Source: WFrame widget (frame of dialogs)
  28  */
  29
  30 #include <config.h>
  31
  32 #include <stdlib.h>
  33
  34 #include "lib/global.h"
  35 #include "lib/tty/tty.h"
  36 #include "lib/tty/color.h"
  37 #include "lib/skin.h"
  38 #include "lib/strutil.h"
  39 #include "lib/util.h"           /* MC_PTR_FREE */
  40 #include "lib/widget.h"
  41
  42 /*** global variables ****************************************************************************/
  43
  44 /*** file scope macro definitions ****************************************************************/
  45
  46 /*** file scope type declarations ****************************************************************/
  47
  48 /*** forward declarations (file scope functions) *************************************************/
  49
  50 /*** file scope variables ************************************************************************/
  51
  52 /* --------------------------------------------------------------------------------------------- */
  53 /*** file scope functions ************************************************************************/
  54 /* --------------------------------------------------------------------------------------------- */
  55
  56 static void
  57 frame_adjust (WFrame *f)
  58 {
  59     Widget *w = WIDGET (f);
  60
  61     w->rect = WIDGET (w->owner)->rect;
  62     w->pos_flags |= WPOS_KEEP_ALL;
  63 }
  64
  65 /* --------------------------------------------------------------------------------------------- */
  66
  67 static void
  68 frame_draw (const WFrame *f)
  69 {
  70     const Widget *wf = CONST_WIDGET (f);
  71     const WRect *w = &wf->rect;
  72     int d = f->compact ? 0 : 1;
  73     const int *colors;
  74
  75     colors = widget_get_colors (wf);
  76
  77     if (mc_global.tty.shadows)
  78         tty_draw_box_shadow (w->y, w->x, w->lines, w->cols, SHADOW_COLOR);
  79
  80     tty_setcolor (colors[FRAME_COLOR_NORMAL]);
  81     tty_fill_region (w->y, w->x, w->lines, w->cols, ' ');
  82     tty_draw_box (w->y + d, w->x + d, w->lines - 2 * d, w->cols - 2 * d, f->single);
  83
  84     if (f->title != NULL)
  85     {
  86         /* TODO: truncate long title */
  87         tty_setcolor (colors[FRAME_COLOR_TITLE]);
  88         widget_gotoyx (f, d, (w->cols - str_term_width1 (f->title)) / 2);
  89         tty_print_string (f->title);
  90     }
  91 }
  92
  93 /* --------------------------------------------------------------------------------------------- */
  94 /*** public functions ****************************************************************************/
  95 /* --------------------------------------------------------------------------------------------- */
  96
  97 WFrame *
  98 frame_new (int y, int x, int lines, int cols, const char *title, gboolean single, gboolean compact)
  99 {
 100     WRect r = { y, x, lines, cols };
 101     WFrame *f;
 102     Widget *w;
 103
 104     f = g_new (WFrame, 1);
 105     w = WIDGET (f);
 106     widget_init (w, &r, frame_callback, NULL);
 107
 108     f->single = single;
 109     f->compact = compact;
 110
 111     f->title = NULL;
 112     frame_set_title (f, title);
 113
 114     return f;
 115 }
 116
 117 /* --------------------------------------------------------------------------------------------- */
 118
 119 cb_ret_t
 120 frame_callback (Widget *w, Widget *sender, widget_msg_t msg, int parm, void *data)
 121 {
 122     WFrame *f = FRAME (w);
 123
 124     switch (msg)
 125     {
 126     case MSG_INIT:
 127         frame_adjust (f);
 128         return MSG_HANDLED;
 129
 130     case MSG_DRAW:
 131         frame_draw (f);
 132         return MSG_HANDLED;
 133
 134     case MSG_DESTROY:
 135         g_free (f->title);
 136         return MSG_HANDLED;
 137
 138     default:
 139         return widget_default_callback (w, sender, msg, parm, data);
 140     }
 141 }
 142
 143 /* --------------------------------------------------------------------------------------------- */
 144
 145 void
 146 frame_set_title (WFrame *f, const char *title)
 147 {
 148     MC_PTR_FREE (f->title);
 149
 150     /* Strip existing spaces, add one space before and after the title */
 151     if (title != NULL && *title != '\0')
 152     {
 153         char *t;
 154
 155         t = g_strstrip (g_strdup (title));
 156         if (*t != '\0')
 157             f->title = g_strdup_printf (" %s ", t);
 158         g_free (t);
 159     }
 160
 161     widget_draw (WIDGET (f));
 162 }
 163
 164 /* --------------------------------------------------------------------------------------------- */