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Remove opacity-groups

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GtkWidget had a hack where if opacity is 0.999 we set up an opacity group when
rendering the widget. This is no longer needed in 3.10, and GtkStack doesn't
use it anymore.

GdStack is using it, so applications should be ported from GdStack to GtkStack
in 3.12.

https://bugzilla.gnome.org/show_bug.cgi?id=703603
This commit is contained in:
Alexander Larsson 2013-07-04 11:41:00 +00:00 committed by Matthias Clasen
parent 605b918b2d
commit 5bdfdcadff
1 changed files with 0 additions and 31 deletions
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31
gtk/gtkwidget.c
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@ -460,8 +460,6 @@ struct _GtkWidgetPrivate
/* SizeGroup related flags */
guint have_size_groups : 1;
guint opacity_group : 1;
guint8 alpha;
guint8 user_alpha;
@ -6584,7 +6582,6 @@ _gtk_widget_draw (GtkWidget *widget,
cairo_save (cr);
push_group =
widget->priv->opacity_group ||
(widget->priv->alpha != 255 &&
!gtk_widget_is_toplevel (widget));
@ -14986,27 +14983,6 @@ gtk_widget_update_alpha (GtkWidget *widget)
}
}
static void
gtk_widget_set_has_opacity_group (GtkWidget *widget,
gboolean has_opacity_group)
{
GtkWidgetPrivate *priv;
g_return_if_fail (GTK_IS_WIDGET (widget));
priv = widget->priv;
has_opacity_group = !!has_opacity_group;
if (priv->opacity_group == has_opacity_group)
return;
priv->opacity_group = has_opacity_group;
if (gtk_widget_get_realized (widget))
gtk_widget_queue_draw (widget);
}
/**
* gtk_widget_set_opacity:
* @widget: a #GtkWidget
@ -15044,13 +15020,6 @@ gtk_widget_set_opacity (GtkWidget *widget,
alpha = round (opacity * 255);
/* As a kind of hack for internal use we treat an alpha very
close to 1.0 (rounds to 255) but not 1.0 as specifying that
we want the opacity group behaviour wrt draw handling, but
not actually an alpha value. See bug #687842 for discussions. */
gtk_widget_set_has_opacity_group (widget,
alpha == 255 && opacity != 1.0);
if (alpha == priv->user_alpha)
return;