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widget: Propagate display changes to the style context

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When a root is set on a widget, the style context may
already exist. We need to make sure that the style context
has the right display set.

This was showing up as "css spillover" in the inspector.

Closes: #https://gitlab.gnome.org/GNOME/gtk/issues/1817
This commit is contained in:
Matthias Clasen 2019-04-06 23:03:25 +00:00
parent 9895f2bd3a
commit bea7ccb41f
1 changed files with 6 additions and 0 deletions
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6
gtk/gtkwidget.c
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@ -2953,6 +2953,9 @@ gtk_widget_root (GtkWidget *widget)
priv->root = priv->parent->priv->root;
if (priv->context)
gtk_style_context_set_display (priv->context, gtk_root_get_display (priv->root));
GTK_WIDGET_GET_CLASS (widget)->root (widget);
g_object_notify_by_pspec (G_OBJECT (widget), widget_props[PROP_ROOT]);
@ -2972,6 +2975,9 @@ gtk_widget_unroot (GtkWidget *widget)
GTK_WIDGET_GET_CLASS (widget)->unroot (widget);
if (priv->context)
gtk_style_context_set_display (priv->context, gdk_display_get_default ());
priv->root = NULL;
g_object_notify_by_pspec (G_OBJECT (widget), widget_props[PROP_ROOT]);