Esempi in C++ (Cpp) per clutter_text_set_preedit_string

Esempio n. 1

File: st-im-text.c Progetto: cosimoc/gnome-shell

static void
st_im_text_preedit_changed_cb (GtkIMContext *context,
                               StIMText     *imtext)
{
  ClutterText *clutter_text = CLUTTER_TEXT (imtext);
  gchar *preedit_str = NULL;
  PangoAttrList *preedit_attrs = NULL;
  gint cursor_pos = 0;

  gtk_im_context_get_preedit_string (context,
                                     &preedit_str,
                                     &preedit_attrs,
                                     &cursor_pos);

  clutter_text_set_preedit_string (clutter_text,
                                   preedit_str,
                                   preedit_attrs,
                                   cursor_pos);

  g_free (preedit_str);
  pango_attr_list_unref (preedit_attrs);
}

Esempio n. 2

File: test-text-field.c Progetto: GNOME/mutter

static gboolean
on_captured_event (ClutterText *text,
                   ClutterEvent *event,
                   gpointer      dummy G_GNUC_UNUSED)
{
  gboolean is_unicode_mode = FALSE;
  gunichar c;
  guint keyval;

  if (event->type != CLUTTER_KEY_PRESS)
    return FALSE;

  is_unicode_mode = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (text),
                                                        "unicode-mode"));

  c = clutter_event_get_key_unicode (event);
  keyval = clutter_event_get_key_symbol (event);
  if (keyval == CLUTTER_KEY_U)
    {
      if (is_unicode_mode)
        {
          GString *str = g_object_get_data (G_OBJECT (text), "unicode-str");

          clutter_text_set_preedit_string (text, NULL, NULL, 0);

          g_object_set_data (G_OBJECT (text), "unicode-mode",
                             GINT_TO_POINTER (FALSE));
          g_object_set_data (G_OBJECT (text), "unicode-str",
                             NULL);

          g_string_free (str, TRUE);

          return FALSE;
        }

      if (clutter_event_has_control_modifier (event))
        {
          PangoAttrList *attrs;
          PangoAttribute *a;
          GString *str = g_string_sized_new (5);

          g_string_append (str, "u");

          g_object_set_data (G_OBJECT (text),
                             "unicode-mode",
                             GINT_TO_POINTER (TRUE));
          g_object_set_data (G_OBJECT (text),
                             "unicode-str",
                             str);

          attrs = pango_attr_list_new ();

          a = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE);
          a->start_index = 0;
          a->end_index = str->len;
          pango_attr_list_insert (attrs, a);

          clutter_text_set_preedit_string (text, str->str, attrs, str->len);

          pango_attr_list_unref (attrs);

          return TRUE;
        }

      return FALSE;
    }
  else if (is_unicode_mode && is_hex_digit (c))
    {
      GString *str = g_object_get_data (G_OBJECT (text), "unicode-str");
      PangoAttrList *attrs;
      PangoAttribute *a;
      gchar buf[8];
      gsize len;

      len = g_unichar_to_utf8 (c, buf);
      buf[len] = '\0';

      g_string_append (str, buf);

      g_print ("added '%s' to '%s' (len:%d)\n",
               buf,
               str->str,
               (int) str->len);

      attrs = pango_attr_list_new ();

      a = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE);
      a->start_index = 0;
      a->end_index = str->len;
      pango_attr_list_insert (attrs, a);

      clutter_text_set_preedit_string (text, str->str, attrs, str->len);

      pango_attr_list_unref (attrs);

      return TRUE;
    }
  else if (is_unicode_mode && (keyval == CLUTTER_KEY_BackSpace))
    {
      GString *str = g_object_get_data (G_OBJECT (text), "unicode-str");
      PangoAttrList *attrs;
      PangoAttribute *a;

      g_string_truncate (str, str->len - 1);

      attrs = pango_attr_list_new ();

      a = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE);
      a->start_index = 0;
      a->end_index = str->len;
      pango_attr_list_insert (attrs, a);

      clutter_text_set_preedit_string (text, str->str, attrs, str->len);

      pango_attr_list_unref (attrs);

      return TRUE;
    }
  else if (is_unicode_mode &&
           (keyval == CLUTTER_KEY_Return ||
            keyval == CLUTTER_KEY_KP_Enter ||
            keyval == CLUTTER_KEY_ISO_Enter ||
            keyval == CLUTTER_KEY_KP_Space))
    {
      GString *str = g_object_get_data (G_OBJECT (text), "unicode-str");
      const gchar *contents = clutter_text_get_text (text);
      gunichar uchar = 0;
      gchar ch;
      gint i;

      clutter_text_set_preedit_string (text, NULL, NULL, 0);

      g_object_set_data (G_OBJECT (text), "unicode-mode",
                         GINT_TO_POINTER (FALSE));
      g_object_set_data (G_OBJECT (text), "unicode-str",
                         NULL);

      for (i = 0; i < str->len; i++)
        {
          ch = str->str[i];

          if (is_hex_digit (ch))
            uchar += ((gunichar) to_hex_digit (ch) << ((4 - i) * 4));
        }

      g_assert (g_unichar_validate (uchar));

      g_string_overwrite (str, 0, contents);
      g_string_insert_unichar (str,
                               clutter_text_get_cursor_position (text),
                               uchar);

      i = clutter_text_get_cursor_position (text);
      clutter_text_set_text (text, str->str);

      if (i >= 0)
        i += 1;
      else
        i = -1;

      clutter_text_set_cursor_position (text, i);
      clutter_text_set_selection_bound (text, i);

      g_string_free (str, TRUE);

      return TRUE;
    }
  else
    return FALSE;
}