Indeed, you were right regarding gtk_comb_box_set_entry_text_column().
For the record, below find a translation into C of your python program.
Here are some enhancements that I thought of, though I highly doubt that
they will be adapted because they are too specialized.
- Turn it into a widget, that takes a receives of strings in its
constructor.
- Add keybindings for the following functionality:
- Restore the last string input into the entry widget before
selecting a match i the combo-box. E.g. [Meta-Up], [Ctrl-/]
- Select next entry matching the last string input. [Ctrl-Up]
- Select previous entry matching the last string input. [Ctrl-Down]
- Toggle mathing method between Regular expressions, and partial
string matches. [Ctrl-=]
- The special keybindings should also be shown when doing rightclick in
the enty widget, that should allow the above functionality.
Based on the code below, I have now also created a pull request for
gucharmap: https://github.com/GNOME/gucharmap/pull/2 .
Thanks again!
#include <stdlib.h>
#include <gtk/gtk.h>
enum {
COL_FONT = 0
};
void populate_store(GtkListStore *store)
{
int i;
for (i=0; i<100; i++) {
char buf[100];
GtkTreeIter iter;
sprintf(buf, "Font %d", i);
gtk_list_store_insert_with_values(store,
&iter,
-1,
COL_FONT, buf,
-1);
}
}
static gboolean
match_function (GtkEntryCompletion *completion,
const gchar *key,
GtkTreeIter *iter,
gpointer user_data)
{
GtkTreeModel *model = GTK_TREE_MODEL(user_data);
char *family, *family_fold;
gchar **sub_match, **p;
gboolean all_matches = TRUE;
gtk_tree_model_get (model,
iter,
COL_FONT, &family,
-1);
family_fold = g_utf8_casefold (family, -1);
/* Match by all space separated substrings are part of family string */
sub_match = g_strsplit(key, " ", -1);
p = sub_match;
while (*p) {
gchar *match_fold = g_utf8_casefold (*p++, -1);
if (!g_strstr_len (family_fold, -1, match_fold)) {
all_matches = FALSE;
break;
}
}
g_free (family);
g_free (family_fold);
g_strfreev (sub_match);
return all_matches;
}
static gboolean
completion_match_selected(GtkEntryCompletion *widget,
GtkTreeModel *model,
GtkTreeIter *iter,
gpointer *user_data)
{
char *font;
gtk_tree_model_get (model,
iter,
COL_FONT, &font,
-1);
printf("selected %s\n", font);
g_free (font);
return FALSE;
}
static void
combo_changed (GtkComboBox *combo,
gpointer user_data)
{
GtkTreeModel *model = GTK_TREE_MODEL (user_data);
GtkTreeIter iter;
char *font;
if (!gtk_combo_box_get_active_iter (combo, &iter))
return;
gtk_tree_model_get (model,
&iter,
COL_FONT, &font,
-1);
if (!font)
return;
printf("Choosen %s\n", font);
g_free (font);
}
int main(int argc, char **argv)
{
gtk_init(&argc, &argv);
GtkWidget *w_mw = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect(w_mw,"destroy",gtk_main_quit, NULL);
GtkListStore *store = gtk_list_store_new (1, G_TYPE_STRING);
populate_store(store);
GtkWidget *w_combo = gtk_combo_box_new_with_model_and_entry
(GTK_TREE_MODEL (store));
gtk_combo_box_set_entry_text_column (GTK_COMBO_BOX(w_combo), COL_FONT);
g_signal_connect (w_combo, "changed",
G_CALLBACK (combo_changed), store);
GtkEntryCompletion *completion = gtk_entry_completion_new();
gtk_entry_completion_set_model (completion, GTK_TREE_MODEL (store));
gtk_entry_completion_set_text_column (completion, COL_FONT);
gtk_entry_completion_set_match_func(completion, match_function,
GTK_TREE_MODEL(store), NULL);
g_signal_connect (G_OBJECT (completion), "match-selected",
G_CALLBACK (completion_match_selected), NULL);
gtk_entry_set_completion (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (w_combo))),
completion);
gtk_container_add(GTK_CONTAINER(w_mw), w_combo);
gtk_widget_show_all(w_mw);
gtk_main();
exit(0);
}
On Sat, Jul 28, 2018 at 2:34 PM Reuben Rissler <sil...@emypeople.net> wrote:
>
>
> (gucharmap:30880): Gtk-CRITICAL **: 17:41:07.804: gtk_entry_set_text:
> assertion 'text != NULL' failed
>
> This happens e.g. when I'm using the up down arrows within the text entry.
> Btw, this happens also if I only replace (without setting up all the
> connections), gtk_combo_box_new() with gtk_combo_box_new_with_entry(). I'm
> still trying to figure out what went wrong.
>
> I will hazard a guess that you didn't set the text column with
> gtk_combo_box_set_entry_text_column ()
>
> Reuben
>
>
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