From 76510619206ae8233ed49b379343b689a8028920 Mon Sep 17 00:00:00 2001 From: Carlos Garnacho Date: Mon, 17 Nov 2014 16:55:08 +0100 Subject: [PATCH] scrolledwindow: Avoid too frequent redraws of scrollbars When overshooting through touchpad kinetic scrolling, the scrollbar remains mostly static as it already hit a boundary. However, the fade in/out checks are constantly run during scroll events, causing needless redraws in this specific case. --- gtk/gtkscrolledwindow.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/gtk/gtkscrolledwindow.c b/gtk/gtkscrolledwindow.c index 3d33d600b4..86a53d75fb 100644 --- a/gtk/gtkscrolledwindow.c +++ b/gtk/gtkscrolledwindow.c @@ -3387,7 +3387,9 @@ static void indicator_set_fade (Indicator *indicator, gdouble pos) { - gboolean visible; + gboolean visible, changed; + + changed = indicator->current_pos != pos; indicator->current_pos = pos; visible = indicator->current_pos != 0.0 || indicator->target_pos != 0.0; @@ -3404,8 +3406,11 @@ indicator_set_fade (Indicator *indicator, indicator->conceil_timer = 0; } - gtk_widget_set_opacity (indicator->scrollbar, indicator->current_pos); - gtk_widget_queue_draw (indicator->scrollbar); + if (changed) + { + gtk_widget_set_opacity (indicator->scrollbar, indicator->current_pos); + gtk_widget_queue_draw (indicator->scrollbar); + } } static double -- 2.30.2