static gboolean
st_im_text_key_press_event (ClutterActor *actor,
ClutterKeyEvent *event)
{
StIMText *self = ST_IM_TEXT (actor);
StIMTextPrivate *priv = self->priv;
ClutterText *clutter_text = CLUTTER_TEXT (actor);
gboolean result = FALSE;
int old_position;
if (clutter_text_get_editable (clutter_text))
{
GdkEventKey *event_gdk = key_event_to_gdk (event);
if (gtk_im_context_filter_keypress (priv->im_context, event_gdk))
{
priv->need_im_reset = TRUE;
result = TRUE;
}
gdk_event_free ((GdkEvent *)event_gdk);
}
old_position = clutter_text_get_cursor_position (clutter_text);
if (!result &&
CLUTTER_ACTOR_CLASS (st_im_text_parent_class)->key_press_event)
result = CLUTTER_ACTOR_CLASS (st_im_text_parent_class)->key_press_event (actor, event);
if (clutter_text_get_cursor_position (clutter_text) != old_position)
reset_im_context (self);
return result;
}
static void
on_entry_activate (ClutterText *text,
gpointer data)
{
g_print ("Text activated: %s (cursor: %d, selection at: %d)\n",
clutter_text_get_text (text),
clutter_text_get_cursor_position (text),
clutter_text_get_selection_bound (text));
}
static gboolean
print_cursor_position_press_cb (ClutterActor *actor,
ClutterButtonEvent *event,
gpointer data)
{
gint pos = 0;
pos = clutter_text_get_cursor_position (CLUTTER_TEXT (text_editable_actor));
g_print ("current cursor position %i\n", pos);
return TRUE;
}
static void
st_im_text_commit_cb (GtkIMContext *context,
const gchar *str,
StIMText *imtext)
{
ClutterText *clutter_text = CLUTTER_TEXT (imtext);
if (clutter_text_get_editable (clutter_text))
{
clutter_text_delete_selection (clutter_text);
clutter_text_insert_text (clutter_text, str,
clutter_text_get_cursor_position (clutter_text));
}
}
static void
st_entry_clipboard_callback (StClipboard *clipboard,
const gchar *text,
gpointer data)
{
ClutterText *ctext = (ClutterText*)((StEntry *) data)->priv->entry;
gint cursor_pos;
if (!text)
return;
/* delete the current selection before pasting */
clutter_text_delete_selection (ctext);
/* "paste" the clipboard text into the entry */
cursor_pos = clutter_text_get_cursor_position (ctext);
clutter_text_insert_text (ctext, text, cursor_pos);
}
static gboolean
st_im_text_delete_surrounding_cb (GtkIMContext *context,
gint offset,
gint n_chars,
StIMText *imtext)
{
ClutterText *clutter_text = CLUTTER_TEXT (imtext);
if (clutter_text_get_editable (clutter_text))
{
gint cursor_pos = clutter_text_get_cursor_position (clutter_text);
clutter_text_delete_text (clutter_text,
cursor_pos + offset,
cursor_pos + offset + n_chars);
}
return TRUE;
}
static void
update_im_cursor_location (StIMText *self)
{
StIMTextPrivate *priv = self->priv;
ClutterText *clutter_text = CLUTTER_TEXT (self);
gint position;
gfloat cursor_x, cursor_y, cursor_height;
gfloat actor_x, actor_y;
GdkRectangle area;
position = clutter_text_get_cursor_position (clutter_text);
clutter_text_position_to_coords (clutter_text, position,
&cursor_x, &cursor_y, &cursor_height);
clutter_actor_get_transformed_position (CLUTTER_ACTOR (self), &actor_x, &actor_y);
area.x = (int)(0.5 + cursor_x + actor_x);
area.y = (int)(0.5 + cursor_y + actor_y);
area.width = 0;
area.height = (int)(0.5 + cursor_height);
gtk_im_context_set_cursor_location (priv->im_context, &area);
}
static gboolean
st_im_text_retrieve_surrounding_cb (GtkIMContext *context,
StIMText *imtext)
{
ClutterText *clutter_text = CLUTTER_TEXT (imtext);
ClutterTextBuffer *buffer;
const gchar *text;
gint cursor_pos;
buffer = clutter_text_get_buffer (clutter_text);
text = clutter_text_buffer_get_text (buffer);
cursor_pos = clutter_text_get_cursor_position (clutter_text);
if (cursor_pos < 0)
cursor_pos = clutter_text_buffer_get_length (buffer);
gtk_im_context_set_surrounding (context, text,
/* length and cursor_index are in bytes */
clutter_text_buffer_get_bytes (buffer),
g_utf8_offset_to_pointer (text, cursor_pos) - text);
return TRUE;
}
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;
}
