[gtk/wip/ebassi/animations: 5/5] WIP: Create an animation manager for GtkWindow

[Emmanuele Bassi <ebassi src gnome org>]

commit b2bd7f64f0f6347b6dd6224de02182a3be333bf4
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Jul 24 16:41:55 2019 +0100

    WIP: Create an animation manager for GtkWindow

 gtk/gtkroot.c        | 19 ++++++++++++++++++-
 gtk/gtkrootprivate.h |  5 ++++-
 gtk/gtkwindow.c      | 20 ++++++++++++++++++++
 3 files changed, 42 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkroot.c b/gtk/gtkroot.c
index dce284a57f..08970362f6 100644
--- a/gtk/gtkroot.c
+++ b/gtk/gtkroot.c
@@ -50,18 +50,24 @@ gtk_root_default_get_display (GtkRoot *self)
   return gdk_display_get_default ();
 }
 
-
 static GtkConstraintSolver *
 gtk_root_default_get_constraint_solver (GtkRoot *self)
 {
   return NULL;
 }
 
+static GtkAnimationManager *
+gtk_root_default_get_animation_manager (GtkRoot *self)
+{
+  return NULL;
+}
+
 static void
 gtk_root_default_init (GtkRootInterface *iface)
 {
   iface->get_display = gtk_root_default_get_display;
   iface->get_constraint_solver = gtk_root_default_get_constraint_solver;
+  iface->get_animation_manager = gtk_root_default_get_animation_manager;
 
   g_object_interface_install_property (iface,
       g_param_spec_object ("focus-widget",
@@ -101,6 +107,17 @@ gtk_root_get_constraint_solver (GtkRoot *self)
   return iface->get_constraint_solver (self);
 }
 
+GtkAnimationManager *
+gtk_root_get_animation_manager (GtkRoot *self)
+{
+  GtkRootInterface *iface;
+
+  g_return_val_if_fail (GTK_IS_ROOT (self), NULL);
+
+  iface = GTK_ROOT_GET_IFACE (self);
+  return iface->get_animation_manager (self);
+}
+
 /**
  * gtk_root_set_focus:
  * @self: a #GtkRoot
diff --git a/gtk/gtkrootprivate.h b/gtk/gtkrootprivate.h
index aae7a674a5..c77402eadf 100644
--- a/gtk/gtkrootprivate.h
+++ b/gtk/gtkrootprivate.h
@@ -3,11 +3,12 @@
 
 #include "gtkroot.h"
 
+#include "gtkanimationmanagerprivate.h"
 #include "gtkconstraintsolverprivate.h"
 
 G_BEGIN_DECLS
 
-/**
+/*< private >
  * GtkRootIface:
  *
  * The list of functions that must be implemented for the #GtkRoot interface.
@@ -21,9 +22,11 @@ struct _GtkRootInterface
   GdkDisplay * (* get_display)  (GtkRoot *self);
 
   GtkConstraintSolver * (* get_constraint_solver) (GtkRoot *self);
+  GtkAnimationManager * (* get_animation_manager) (GtkRoot *self);
 };
 
 GtkConstraintSolver *   gtk_root_get_constraint_solver  (GtkRoot *self);
+GtkAnimationManager *   gtk_root_get_animation_manager  (GtkRoot *self);
 
 enum {
   GTK_ROOT_PROP_FOCUS_WIDGET,
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index dab50be990..1b5d10bf89 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -283,6 +283,7 @@ typedef struct
   GList *foci;
 
   GtkConstraintSolver *constraint_solver;
+  GtkAnimationManager *animation_manager;
 } GtkWindowPrivate;
 
 #ifdef GDK_WINDOWING_X11
@@ -2367,6 +2368,23 @@ gtk_window_root_get_constraint_solver (GtkRoot *root)
   return priv->constraint_solver;
 }
 
+static GtkAnimationManager *
+gtk_window_root_get_animation_manager (GtkRoot *root)
+{
+  GtkWindow *self = GTK_WINDOW (root);
+  GtkWindowPrivate *priv = gtk_window_get_instance_private (self);
+  GdkFrameClock *frame_clock;
+
+  if (priv->animation_manager == NULL)
+    priv->animation_manager = gtk_animation_manager_new ();
+
+  frame_clock = gtk_widget_get_frame_clock (GTK_WIDGET (self));
+  if (frame_clock != NULL)
+    gtk_animation_manager_set_frame_clock (priv->animation_manager, frame_clock);
+
+  return priv->animation_manager;
+}
+
 static void
 gtk_window_native_get_surface_transform (GtkNative *native,
                                          int       *x,
@@ -2396,6 +2414,7 @@ gtk_window_root_interface_init (GtkRootInterface *iface)
 {
   iface->get_display = gtk_window_root_get_display;
   iface->get_constraint_solver = gtk_window_root_get_constraint_solver;
+  iface->get_animation_manager = gtk_window_root_get_animation_manager;
 }
 
 static void
@@ -4738,6 +4757,7 @@ gtk_window_finalize (GObject *object)
       priv->mnemonics_display_timeout_id = 0;
     }
 
+  g_clear_object (&priv->animation_manager);
   g_clear_object (&priv->constraint_solver);
   g_clear_object (&priv->renderer);