src/widgets/gnm-format-sel.c

   1 /*
   2  * gnm-format-sel.c: Gnumeric extensions to the format selector widget
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see <https://www.gnu.org/licenses/>.
  16  **/
  17
  18 #include <gnumeric-config.h>
  19 #include <widgets/gnm-format-sel.h>
  20 #include <src/value.h>
  21 #include <src/gnm-format.h>
  22 #include <src/style-font.h>
  23
  24 static char *
  25 cb_generate_preview (GOFormatSel *gfs, PangoAttrList **attrs)
  26 {
  27         GnmValue const *v = g_object_get_data (G_OBJECT (gfs), "value");
  28
  29         if (NULL == v)
  30                 return NULL;
  31         else {
  32                 GOFormat const *fmt = go_format_sel_get_fmt (gfs);
  33                 GtkWidget *w = GTK_WIDGET (gfs);
  34                 PangoContext *context = gtk_widget_get_pango_context (w);
  35                 PangoLayout *layout = pango_layout_new (context);
  36                 char *str;
  37                 GOFormatNumberError err;
  38
  39                 if (go_format_is_general (fmt) && VALUE_FMT (v) != NULL)
  40                         fmt = VALUE_FMT (v);
  41                 err = format_value_layout (layout, fmt, v, -1,
  42                                            go_format_sel_get_dateconv (gfs));
  43                 if (err) {
  44                         str = NULL;
  45                         *attrs = NULL;
  46                 } else {
  47                         str = g_strdup (pango_layout_get_text (layout));
  48                         go_pango_translate_layout (layout);
  49                         *attrs = pango_attr_list_ref (pango_layout_get_attributes (layout));
  50                 }
  51                 g_object_unref (layout);
  52                 return str;
  53         }
  54 }
  55
  56 /**
  57  * gnm_format_sel_new:
  58  *
  59  * Returns: (transfer full): a new format selector
  60  */
  61 GtkWidget *
  62 gnm_format_sel_new (void)
  63 {
  64         GObject *w = G_OBJECT (go_format_sel_new_full (TRUE));
  65         g_signal_connect (w, "generate-preview",
  66                 G_CALLBACK (cb_generate_preview), NULL);
  67         return GTK_WIDGET (w);
  68 }
  69
  70 void
  71 gnm_format_sel_set_value (GOFormatSel *gfs, GnmValue const *value)
  72 {
  73         g_return_if_fail (GO_IS_FORMAT_SEL (gfs));
  74         g_return_if_fail (value != NULL);
  75
  76         g_object_set_data_full (G_OBJECT (gfs),
  77                 "value", value_dup (value), (GDestroyNotify) value_release);
  78         go_format_sel_show_preview (gfs);
  79 }