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scrolledwindow: Avoid too frequent redraws of scrollbars

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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.
This commit is contained in:
Carlos Garnacho
2014-11-17 16:55:08 +01:00
parent 6d5f2ff87e
commit 7651061920
1 changed files with 8 additions and 3 deletions
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11
gtk/gtkscrolledwindow.c
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@ -3387,7 +3387,9 @@ static void
indicator_set_fade (Indicator *indicator, indicator_set_fade (Indicator *indicator,
gdouble pos) gdouble pos)
{ {
gboolean visible; gboolean visible, changed;
changed = indicator->current_pos != pos;
indicator->current_pos = pos; indicator->current_pos = pos;
visible = indicator->current_pos != 0.0 || indicator->target_pos != 0.0; visible = indicator->current_pos != 0.0 || indicator->target_pos != 0.0;
@ -3404,8 +3406,11 @@ indicator_set_fade (Indicator *indicator,
indicator->conceil_timer = 0; indicator->conceil_timer = 0;
} }
gtk_widget_set_opacity (indicator->scrollbar, indicator->current_pos); if (changed)
gtk_widget_queue_draw (indicator->scrollbar); {
gtk_widget_set_opacity (indicator->scrollbar, indicator->current_pos);
gtk_widget_queue_draw (indicator->scrollbar);
}
} }
static double static double