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text: Don't compute invisible char needlessly

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There is no real reason to do expensive text layout
operations unless we need the invisible char because
the text's visibilty is FALSE.
This commit is contained in:
Matthias Clasen 2020-08-23 15:12:57 -04:00
parent c0191c7225
commit ca0f136deb
1 changed files with 7 additions and 5 deletions
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12
gtk/gtktext.c
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@ -3441,7 +3441,7 @@ gtk_text_update_cached_style_values (GtkText *self)
{
GtkTextPrivate *priv = gtk_text_get_instance_private (self);
if (!priv->invisible_char_set)
if (!priv->visible && !priv->invisible_char_set)
{
gunichar ch = find_invisible_char (GTK_WIDGET (self));
@ -5550,11 +5550,13 @@ gtk_text_set_invisible_char (GtkText *self,
* @self: a #GtkText
*
* Retrieves the character displayed in place of the real characters
* for entries with visibility set to false.
* See gtk_text_set_invisible_char().
* for entries with visibility set to false. Note that GTK does not
* compute this value unless it needs it, so the value returned by
* this function is not very useful unless it has been explicitly
* set with gtk_text_set_invisible_char()
*
* Returns: the current invisible char, or 0, if the self does not
* show invisible text at all.
* Returns: the current invisible char, or 0, if @text does not
* show invisible text at all.
**/
gunichar
gtk_text_get_invisible_char (GtkText *self)