[gnome-control-center] background: Use GTK widget types

[Robert Ancell <rancell src gnome org>]

commit 7e0a66226b165edee07d7edb55d5bc82a0a65728
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Nov 20 14:43:01 2019 +1300

    background: Use GTK widget types

 panels/background/cc-background-panel.c   |  4 ++--
 panels/background/cc-background-preview.c | 12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)
---
diff --git a/panels/background/cc-background-panel.c b/panels/background/cc-background-panel.c
index 9d5aa92a0..0eb366d7a 100644
--- a/panels/background/cc-background-panel.c
+++ b/panels/background/cc-background-panel.c
@@ -59,7 +59,7 @@ struct _CcBackgroundPanel
   CcBackgroundItem *current_background;
 
   CcBackgroundChooser *background_chooser;
-  GtkWidget *add_picture_button;
+  GtkButton *add_picture_button;
   CcBackgroundPreview *desktop_preview;
 };
 
@@ -228,7 +228,7 @@ cc_background_panel_constructed (GObject *object)
   self = CC_BACKGROUND_PANEL (object);
   shell = cc_panel_get_shell (CC_PANEL (self));
 
-  cc_shell_embed_widget_in_header (shell, self->add_picture_button, GTK_POS_RIGHT);
+  cc_shell_embed_widget_in_header (shell, GTK_WIDGET (self->add_picture_button), GTK_POS_RIGHT);
 
   G_OBJECT_CLASS (cc_background_panel_parent_class)->constructed (object);
 }
diff --git a/panels/background/cc-background-preview.c b/panels/background/cc-background-preview.c
index fa2bc90f8..17b47d6e4 100644
--- a/panels/background/cc-background-preview.c
+++ b/panels/background/cc-background-preview.c
@@ -26,9 +26,9 @@ struct _CcBackgroundPreview
 {
   GtkBox            parent;
 
-  GtkWidget        *animated_background_icon;
+  GtkImage         *animated_background_icon;
   GtkLabel         *desktop_clock_label;
-  GtkWidget        *drawing_area;
+  GtkDrawingArea   *drawing_area;
   GtkLabel         *lock_screen_label;
   GtkStack         *stack;
 
@@ -161,8 +161,8 @@ on_preview_draw_cb (CcBackgroundPreview *self,
   if (!self->item)
     return FALSE;
 
-  scale_factor = gtk_widget_get_scale_factor (self->drawing_area);
-  gtk_widget_get_allocation (self->drawing_area, &allocation);
+  scale_factor = gtk_widget_get_scale_factor (GTK_WIDGET (self->drawing_area));
+  gtk_widget_get_allocation (GTK_WIDGET (self->drawing_area), &allocation);
   pixbuf = cc_background_item_get_frame_thumbnail (self->item,
                                                    self->thumbnail_factory,
                                                    allocation.width,
@@ -369,10 +369,10 @@ cc_background_preview_set_item (CcBackgroundPreview *self,
   if (!g_set_object (&self->item, item))
     return;
 
-  gtk_widget_set_visible (self->animated_background_icon,
+  gtk_widget_set_visible (GTK_WIDGET (self->animated_background_icon),
                           cc_background_item_changes_with_time (item));
 
-  gtk_widget_queue_draw (self->drawing_area);
+  gtk_widget_queue_draw (GTK_WIDGET (self->drawing_area));
 
   g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_ITEM]);
 }