static guint
gtk_entry_buffer_normal_delete_text (GtkEntryBuffer *buffer,
guint position,
guint n_chars)
{
GtkEntryBufferPrivate *pv = buffer->priv;
gsize start, end;
if (position > pv->normal_text_chars)
position = pv->normal_text_chars;
if (position + n_chars > pv->normal_text_chars)
n_chars = pv->normal_text_chars - position;
if (n_chars > 0)
{
start = g_utf8_offset_to_pointer (pv->normal_text, position) - pv->normal_text;
end = g_utf8_offset_to_pointer (pv->normal_text, position + n_chars) - pv->normal_text;
g_memmove (pv->normal_text + start, pv->normal_text + end, pv->normal_text_bytes + 1 - end);
pv->normal_text_chars -= n_chars;
pv->normal_text_bytes -= (end - start);
/*
* Could be a password, make sure we don't leave anything sensitive after
* the terminating zero. Note, that the terminating zero already trashed
* one byte.
*/
trash_area (pv->normal_text + pv->normal_text_bytes + 1, end - start - 1);
gtk_entry_buffer_emit_deleted_text (buffer, position, n_chars);
}
return n_chars;
}
static void
gtk_entry_buffer_finalize (GObject *obj)
{
GtkEntryBuffer *buffer = GTK_ENTRY_BUFFER (obj);
GtkEntryBufferPrivate *pv = buffer->priv;
if (pv->normal_text)
{
trash_area (pv->normal_text, pv->normal_text_size);
g_free (pv->normal_text);
pv->normal_text = NULL;
pv->normal_text_bytes = pv->normal_text_size = 0;
pv->normal_text_chars = 0;
}
G_OBJECT_CLASS (gtk_entry_buffer_parent_class)->finalize (obj);
}
static void
clutter_text_buffer_finalize (GObject *obj)
{
ClutterTextBuffer *buffer = CLUTTER_TEXT_BUFFER (obj);
ClutterTextBufferPrivate *pv = buffer->priv;
if (pv->normal_text)
{
trash_area (pv->normal_text, pv->normal_text_size);
g_free (pv->normal_text);
pv->normal_text = NULL;
pv->normal_text_bytes = pv->normal_text_size = 0;
pv->normal_text_chars = 0;
}
G_OBJECT_CLASS (clutter_text_buffer_parent_class)->finalize (obj);
}
static guint
gtk_entry_buffer_normal_insert_text (GtkEntryBuffer *buffer,
guint position,
const gchar *chars,
guint n_chars)
{
GtkEntryBufferPrivate *pv = buffer->priv;
gsize prev_size;
gsize n_bytes;
gsize at;
n_bytes = g_utf8_offset_to_pointer (chars, n_chars) - chars;
/* Need more memory */
if (n_bytes + pv->normal_text_bytes + 1 > pv->normal_text_size)
{
gchar *et_new;
prev_size = pv->normal_text_size;
/* Calculate our new buffer size */
while (n_bytes + pv->normal_text_bytes + 1 > pv->normal_text_size)
{
if (pv->normal_text_size == 0)
pv->normal_text_size = MIN_SIZE;
else
{
if (2 * pv->normal_text_size < GTK_ENTRY_BUFFER_MAX_SIZE)
pv->normal_text_size *= 2;
else
{
pv->normal_text_size = GTK_ENTRY_BUFFER_MAX_SIZE;
if (n_bytes > pv->normal_text_size - pv->normal_text_bytes - 1)
{
n_bytes = pv->normal_text_size - pv->normal_text_bytes - 1;
n_bytes = g_utf8_find_prev_char (chars, chars + n_bytes + 1) - chars;
n_chars = g_utf8_strlen (chars, n_bytes);
}
break;
}
}
}
/* Could be a password, so can't leave stuff in memory. */
et_new = g_malloc (pv->normal_text_size);
memcpy (et_new, pv->normal_text, MIN (prev_size, pv->normal_text_size));
trash_area (pv->normal_text, prev_size);
g_free (pv->normal_text);
pv->normal_text = et_new;
}
/* Actual text insertion */
at = g_utf8_offset_to_pointer (pv->normal_text, position) - pv->normal_text;
g_memmove (pv->normal_text + at + n_bytes, pv->normal_text + at, pv->normal_text_bytes - at);
memcpy (pv->normal_text + at, chars, n_bytes);
/* Book keeping */
pv->normal_text_bytes += n_bytes;
pv->normal_text_chars += n_chars;
pv->normal_text[pv->normal_text_bytes] = '\0';
gtk_entry_buffer_emit_inserted_text (buffer, position, chars, n_chars);
return n_chars;
}
