QGtkStyle: use gtk_widget_get_parent() and gtk_widget_is_toplevel()

GtkWidget::parent does not exist in GTK3, and GTK_WIDGET_TOPLEVEL has
been deprecated since GTK 2.20 - > use gtk_widget_is_toplevel()
(available since GTK 2.18) instead.

Change-Id: I0f082b2d69a795cadb321802f25c9993029f6865
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>

3 files changed, 10 insertions, 2 deletions

diff --git a/src/widgets/styles/qgtkstyle.cpp b/src/widgets/styles/qgtkstyle.cpp
index 080689779f..31bda752c3 100644
--- a/src/widgets/styles/qgtkstyle.cpp
+++ b/src/widgets/styles/qgtkstyle.cpp
@@ -953,7 +953,7 @@ void QGtkStyle::drawPrimitive(PrimitiveElement element,
         }
         GtkShadowType shadow_type;
         GtkWidget *gtkStatusbarFrame = d->gtkWidget("GtkStatusbar.GtkFrame");
-        d->gtk_widget_style_get(gtkStatusbarFrame->parent, "shadow-type", &shadow_type, NULL);
+        d->gtk_widget_style_get(d->gtk_widget_get_parent(gtkStatusbarFrame), "shadow-type", &shadow_type, NULL);
         gtkPainter.paintShadow(gtkStatusbarFrame, "frame", option->rect, GTK_STATE_NORMAL,
                                shadow_type, gtkStatusbarFrame->style);
     }
diff --git a/src/widgets/styles/qgtkstyle_p.cpp b/src/widgets/styles/qgtkstyle_p.cpp
index 2ee6c0dca2..42d669e8cf 100644
--- a/src/widgets/styles/qgtkstyle_p.cpp
+++ b/src/widgets/styles/qgtkstyle_p.cpp
@@ -172,6 +172,8 @@ Ptr_gtk_widget_path QGtkStylePrivate::gtk_widget_path = 0;
 Ptr_gtk_container_get_type QGtkStylePrivate::gtk_container_get_type = 0;
 Ptr_gtk_window_get_type QGtkStylePrivate::gtk_window_get_type = 0;
 Ptr_gtk_widget_get_type QGtkStylePrivate::gtk_widget_get_type = 0;
+Ptr_gtk_widget_get_parent QGtkStylePrivate::gtk_widget_get_parent = 0;
+Ptr_gtk_widget_is_toplevel QGtkStylePrivate::gtk_widget_is_toplevel = 0;
 Ptr_gtk_rc_get_style_by_paths QGtkStylePrivate::gtk_rc_get_style_by_paths = 0;
 Ptr_gtk_check_version QGtkStylePrivate::gtk_check_version = 0;
 Ptr_gtk_border_free QGtkStylePrivate::gtk_border_free = 0;
@@ -438,6 +440,8 @@ void QGtkStylePrivate::resolveGtk() const
     gtk_container_get_type =(Ptr_gtk_container_get_type)libgtk.resolve("gtk_container_get_type");
     gtk_window_get_type =(Ptr_gtk_window_get_type)libgtk.resolve("gtk_window_get_type");
     gtk_widget_get_type =(Ptr_gtk_widget_get_type)libgtk.resolve("gtk_widget_get_type");
+    gtk_widget_get_parent =(Ptr_gtk_widget_get_parent)libgtk.resolve("gtk_widget_get_parent");
+    gtk_widget_is_toplevel =(Ptr_gtk_widget_is_toplevel)libgtk.resolve("gtk_widget_is_toplevel");
 
     gtk_rc_get_style_by_paths =(Ptr_gtk_rc_get_style_by_paths)libgtk.resolve("gtk_rc_get_style_by_paths");
     gtk_check_version =(Ptr_gtk_check_version)libgtk.resolve("gtk_check_version");
@@ -755,7 +759,7 @@ void QGtkStylePrivate::setupGtkWidget(GtkWidget* widget)
         }
         Q_ASSERT(protoLayout);
 
-        if (!widget->parent && !GTK_WIDGET_TOPLEVEL(widget))
+        if (!QGtkStylePrivate::gtk_widget_get_parent(widget) && !QGtkStylePrivate::gtk_widget_is_toplevel(widget))
             QGtkStylePrivate::gtk_container_add((GtkContainer*)(protoLayout), widget);
         QGtkStylePrivate::gtk_widget_realize(widget);
     }
diff --git a/src/widgets/styles/qgtkstyle_p.h b/src/widgets/styles/qgtkstyle_p.h
index 1c6b261e27..9ed32bd97b 100644
--- a/src/widgets/styles/qgtkstyle_p.h
+++ b/src/widgets/styles/qgtkstyle_p.h
@@ -215,6 +215,8 @@ typedef void (*Ptr_gtk_menu_shell_append)(GtkMenuShell *, GtkWidget *);
 typedef GtkType (*Ptr_gtk_container_get_type) (void);
 typedef GtkType (*Ptr_gtk_window_get_type) (void);
 typedef GtkType (*Ptr_gtk_widget_get_type) (void);
+typedef GtkWidget* (*Ptr_gtk_widget_get_parent) (GtkWidget *);
+typedef gboolean (*Ptr_gtk_widget_is_toplevel) (GtkWidget *);
 typedef GtkStyle* (*Ptr_gtk_rc_get_style_by_paths) (GtkSettings *, const char *, const char *, GType);
 typedef gint (*Ptr_pango_font_description_get_size) (const PangoFontDescription *);
 typedef PangoWeight (*Ptr_pango_font_description_get_weight) (const PangoFontDescription *);
@@ -438,6 +440,8 @@ public:
     static Ptr_gtk_container_get_type gtk_container_get_type;
     static Ptr_gtk_window_get_type gtk_window_get_type;
     static Ptr_gtk_widget_get_type gtk_widget_get_type;
+    static Ptr_gtk_widget_get_parent gtk_widget_get_parent;
+    static Ptr_gtk_widget_is_toplevel gtk_widget_is_toplevel;
     static Ptr_gtk_rc_get_style_by_paths gtk_rc_get_style_by_paths;
     static Ptr_gtk_check_version gtk_check_version;
     static Ptr_gtk_border_free gtk_border_free;