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text: Defer most recomputation until we're mapped

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It doesn't make sense to update scroll positions or
im cursor locations while we're unmapped, and doing
so causes us to do expensive text measuring.
This commit is contained in:
Matthias Clasen 2020-08-23 15:09:45 -04:00
parent d5114cc18d
commit c0191c7225
1 changed files with 20 additions and 10 deletions
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30
gtk/gtktext.c
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@ -309,6 +309,7 @@ static void gtk_text_dispose (GObject *object);
*/
static void gtk_text_realize (GtkWidget *widget);
static void gtk_text_unrealize (GtkWidget *widget);
static void gtk_text_map (GtkWidget *widget);
static void gtk_text_unmap (GtkWidget *widget);
static void gtk_text_measure (GtkWidget *widget,
GtkOrientation orientation,
@ -710,6 +711,7 @@ gtk_text_class_init (GtkTextClass *class)
gobject_class->set_property = gtk_text_set_property;
gobject_class->get_property = gtk_text_get_property;
widget_class->map = gtk_text_map;
widget_class->unmap = gtk_text_unmap;
widget_class->realize = gtk_text_realize;
widget_class->unrealize = gtk_text_unrealize;
@ -2131,6 +2133,16 @@ gtk_text_get_display_text (GtkText *self,
}
}
static void
gtk_text_map (GtkWidget *widget)
{
GtkText *self = GTK_TEXT (widget);
GTK_WIDGET_CLASS (gtk_text_parent_class)->map (widget);
gtk_text_recompute (self);
}
static void
gtk_text_unmap (GtkWidget *widget)
{
@ -3284,8 +3296,6 @@ static void
gtk_text_root (GtkWidget *widget)
{
GTK_WIDGET_CLASS (gtk_text_parent_class)->root (widget);
gtk_text_recompute (GTK_TEXT (widget));
}
/* GtkEditable method implementations
@ -4329,15 +4339,15 @@ static void
gtk_text_recompute (GtkText *self)
{
gtk_text_reset_layout (self);
gtk_text_check_cursor_blink (self);
gtk_text_adjust_scroll (self);
update_im_cursor_location (self);
gtk_text_update_handles (self);
gtk_widget_queue_draw (GTK_WIDGET (self));
if (!gtk_widget_get_mapped (GTK_WIDGET (self)))
return;
gtk_text_check_cursor_blink (self);
gtk_text_adjust_scroll (self);
update_im_cursor_location (self);
gtk_text_update_handles (self);
}
static PangoLayout *