lib/widget/hline.c

   1 /*
   2    Widgets for the Midnight Commander
   3
   4    Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
   5    2004, 2005, 2006, 2007, 2009, 2010, 2011
   6    The Free Software Foundation, Inc.
   7
   8    Authors:
   9    Radek Doulik, 1994, 1995
  10    Miguel de Icaza, 1994, 1995
  11    Jakub Jelinek, 1995
  12    Andrej Borsenkow, 1996
  13    Norbert Warmuth, 1997
  14    Andrew Borodin <aborodin@vmail.ru>, 2009, 2010
  15
  16    This file is part of the Midnight Commander.
  17
  18    The Midnight Commander is free software: you can redistribute it
  19    and/or modify it under the terms of the GNU General Public License as
  20    published by the Free Software Foundation, either version 3 of the License,
  21    or (at your option) any later version.
  22
  23    The Midnight Commander is distributed in the hope that it will be useful,
  24    but WITHOUT ANY WARRANTY; without even the implied warranty of
  25    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26    GNU General Public License for more details.
  27
  28    You should have received a copy of the GNU General Public License
  29    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  30  */
  31
  32 /** \file hline.c
  33  *  \brief Source: WHLine widget (horizontal line)
  34  */
  35
  36 #include <config.h>
  37
  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 /*** file scope variables ************************************************************************/
  54
  55 /*** file scope functions ************************************************************************/
  56
  57 static cb_ret_t
  58 hline_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
  59 {
  60     WHLine *l = HLINE (w);
  61     WDialog *h = w->owner;
  62
  63     switch (msg)
  64     {
  65     case MSG_INIT:
  66     case MSG_RESIZE:
  67         if (l->auto_adjust_cols)
  68         {
  69             Widget *wo = WIDGET (h);
  70
  71             if (((h->flags & DLG_COMPACT) != 0))
  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     case MSG_FOCUS:
  84         /* We don't want to get the focus */
  85         return MSG_NOT_HANDLED;
  86
  87     case MSG_DRAW:
  88         if (l->transparent)
  89             tty_setcolor (DEFAULT_COLOR);
  90         else
  91             tty_setcolor (h->color[DLG_COLOR_NORMAL]);
  92
  93         tty_draw_hline (w->y, w->x + 1, ACS_HLINE, w->cols - 2);
  94
  95         if (l->auto_adjust_cols)
  96         {
  97             widget_move (w, 0, 0);
  98             tty_print_alt_char (ACS_LTEE, FALSE);
  99             widget_move (w, 0, w->cols - 1);
 100             tty_print_alt_char (ACS_RTEE, FALSE);
 101         }
 102
 103         if (l->text != NULL)
 104         {
 105             int text_width;
 106
 107             text_width = str_term_width1 (l->text);
 108             widget_move (w, 0, (w->cols - text_width) / 2);
 109             tty_print_string (l->text);
 110         }
 111         return MSG_HANDLED;
 112
 113     default:
 114         return widget_default_callback (w, sender, msg, parm, data);
 115     }
 116 }
 117
 118 /* --------------------------------------------------------------------------------------------- */
 119 /*** public functions ****************************************************************************/
 120 /* --------------------------------------------------------------------------------------------- */
 121
 122 WHLine *
 123 hline_new (int y, int x, int width)
 124 {
 125     WHLine *l;
 126     Widget *w;
 127     int lines = 1;
 128
 129     l = g_new (WHLine, 1);
 130     w = WIDGET (l);
 131     init_widget (w, y, x, lines, width < 0 ? 1 : width, hline_callback, NULL);
 132     l->text = NULL;
 133     l->auto_adjust_cols = (width < 0);
 134     l->transparent = FALSE;
 135     widget_want_cursor (w, FALSE);
 136     widget_want_hotkey (w, FALSE);
 137
 138     return l;
 139 }
 140
 141 /* --------------------------------------------------------------------------------------------- */
 142
 143 void
 144 hline_set_text (WHLine * l, const char *text)
 145 {
 146     g_free (l->text);
 147
 148     if (text == NULL || *text == '\0')
 149         l->text = NULL;
 150     else
 151         l->text = g_strdup (text);
 152
 153     if (WIDGET (l)->owner != NULL)
 154         send_message (l, NULL, MSG_DRAW, 0, NULL);
 155 }
 156
 157 /* --------------------------------------------------------------------------------------------- */