[clutter] actor: Move ClutterShader-related code out of clutter-actor.c

[Emmanuele Bassi <ebassi src gnome org>]

commit 8ee6d106812788c0465845fccb9216c50fe8c27f
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sun Dec 18 22:52:49 2011 +0000

    actor: Move ClutterShader-related code out of clutter-actor.c
    
    Since the code dealing with ClutterShader is pretty self-contained, now,
    we can safely move it outside of the main ClutterActor source file and
    into its own. This will allow us to just drop a bunch of files when
    branching for 2.0.

 clutter/Makefile.am                           |    1 +
 clutter/clutter-actor-private.h               |    4 +
 clutter/clutter-actor.c                       |  320 +------------------------
 clutter/deprecated/clutter-actor-deprecated.c |  318 ++++++++++++++++++++++++
 4 files changed, 326 insertions(+), 317 deletions(-)
---
diff --git a/clutter/Makefile.am b/clutter/Makefile.am
index 1bb9adc..c77d247 100644
--- a/clutter/Makefile.am
+++ b/clutter/Makefile.am
@@ -252,6 +252,7 @@ deprecated_h = \
 
 # deprecated source code
 deprecated_c = \
+	$(srcdir)/deprecated/clutter-actor-deprecated.c		\
 	$(srcdir)/deprecated/clutter-behaviour.c 		\
 	$(srcdir)/deprecated/clutter-behaviour-depth.c		\
 	$(srcdir)/deprecated/clutter-behaviour-ellipse.c	\
diff --git a/clutter/clutter-actor-private.h b/clutter/clutter-actor-private.h
index 968dbef..6b91405 100644
--- a/clutter/clutter-actor-private.h
+++ b/clutter/clutter-actor-private.h
@@ -267,6 +267,10 @@ void _clutter_actor_pop_clone_paint  (void);
 
 guint32 _clutter_actor_get_pick_id (ClutterActor *self);
 
+void    _clutter_actor_shader_pre_paint         (ClutterActor *actor,
+                                                 gboolean      repeat);
+void    _clutter_actor_shader_post_paint        (ClutterActor *actor);
+
 G_END_DECLS
 
 #endif /* __CLUTTER_ACTOR_PRIVATE_H__ */
diff --git a/clutter/clutter-actor.c b/clutter/clutter-actor.c
index 803fa41..4dc97b9 100644
--- a/clutter/clutter-actor.c
+++ b/clutter/clutter-actor.c
@@ -318,12 +318,8 @@
 #include "clutter-stage-private.h"
 #include "clutter-units.h"
 
-#define CLUTTER_DISABLE_DEPRECATION_WARNINGS
 #include "deprecated/clutter-behaviour.h"
 #include "deprecated/clutter-container.h"
-#include "deprecated/clutter-shader.h"
-
-typedef struct _ShaderData ShaderData;
 
 #define CLUTTER_ACTOR_GET_PRIVATE(obj) \
 (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_ACTOR, ClutterActorPrivate))
@@ -632,10 +628,6 @@ static void clutter_scriptable_iface_init (ClutterScriptableIface *iface);
 static void clutter_animatable_iface_init (ClutterAnimatableIface *iface);
 static void atk_implementor_iface_init    (AtkImplementorIface    *iface);
 
-static void clutter_actor_shader_pre_paint  (ClutterActor *actor,
-                                             gboolean      repeat);
-static void clutter_actor_shader_post_paint (ClutterActor *actor);
-
 /* These setters are all static for now, maybe they should be in the
  * public API, but they are perhaps obscure enough to leave only as
  * properties
@@ -3245,9 +3237,10 @@ clutter_actor_paint (ClutterActor *self)
       if (pick_mode == CLUTTER_PICK_NONE &&
           actor_has_shader_data (self))
         {
-          clutter_actor_shader_pre_paint (self, FALSE);
+          _clutter_actor_shader_pre_paint (self, FALSE);
           shader_applied = TRUE;
         }
+
       priv->next_effect_to_paint = NULL;
     }
   else
@@ -3257,7 +3250,7 @@ clutter_actor_paint (ClutterActor *self)
   clutter_actor_continue_paint (self);
 
   if (shader_applied)
-    clutter_actor_shader_post_paint (self);
+    _clutter_actor_shader_post_paint (self);
 
   if (G_UNLIKELY (clutter_paint_debug_flags & CLUTTER_DEBUG_PAINT_VOLUMES &&
                   pick_mode == CLUTTER_PICK_NONE))
@@ -12328,313 +12321,6 @@ G_DEFINE_BOXED_TYPE_WITH_CODE (ClutterVertex, clutter_vertex,
                                clutter_vertex_free,
                                CLUTTER_REGISTER_INTERVAL_PROGRESS (clutter_vertex_progress));
 
-struct _ShaderData
-{
-  ClutterShader *shader;
-
-  /* back pointer to the actor */
-  ClutterActor *actor;
-
-  /* list of values that should be set on the shader
-   * before each paint cycle
-   */
-  GHashTable *value_hash;
-};
-
-static void
-shader_value_free (gpointer data)
-{
-  GValue *var = data;
-  g_value_unset (var);
-  g_slice_free (GValue, var);
-}
-
-static void
-destroy_shader_data (gpointer data)
-{
-  ShaderData *shader_data = data;
-
-  if (shader_data == NULL)
-    return;
-
-  if (shader_data->shader != NULL)
-    {
-      g_object_unref (shader_data->shader);
-      shader_data->shader = NULL;
-    }
-
-  if (shader_data->value_hash != NULL)
-    {
-      g_hash_table_destroy (shader_data->value_hash);
-      shader_data->value_hash = NULL;
-    }
-
-  g_slice_free (ShaderData, shader_data);
-}
-
-
-/**
- * clutter_actor_get_shader:
- * @self: a #ClutterActor
- *
- * Queries the currently set #ClutterShader on @self.
- *
- * Return value: (transfer none): The currently set #ClutterShader
- *   or %NULL if no shader is set.
- *
- * Since: 0.6
- *
- * Deprecated: 1.8: Use clutter_actor_get_effect() instead.
- */
-ClutterShader *
-clutter_actor_get_shader (ClutterActor *self)
-{
-  ShaderData *shader_data;
-
-  g_return_val_if_fail (CLUTTER_IS_ACTOR (self), NULL);
-
-  shader_data = g_object_get_qdata (G_OBJECT (self), quark_shader_data);
-  if (shader_data != NULL)
-    return shader_data->shader;
-
-  return NULL;
-}
-
-/**
- * clutter_actor_set_shader:
- * @self: a #ClutterActor
- * @shader: (allow-none): a #ClutterShader or %NULL to unset the shader.
- *
- * Sets the #ClutterShader to be used when rendering @self.
- *
- * If @shader is %NULL this function will unset any currently set shader
- * for the actor.
- *
- * <note>Any #ClutterEffect applied to @self will take the precedence
- * over the #ClutterShader set using this function.</note>
- *
- * Return value: %TRUE if the shader was successfully applied
- *   or removed
- *
- * Since: 0.6
- *
- * Deprecated: 1.8: Use #ClutterShaderEffect and
- *   clutter_actor_add_effect() instead.
- */
-gboolean
-clutter_actor_set_shader (ClutterActor  *self,
-                          ClutterShader *shader)
-{
-  ShaderData *shader_data;
-
-  g_return_val_if_fail (CLUTTER_IS_ACTOR (self), FALSE);
-  g_return_val_if_fail (shader == NULL || CLUTTER_IS_SHADER (shader), FALSE);
-
-  if (shader != NULL)
-    g_object_ref (shader);
-  else
-    {
-      /* if shader passed in is NULL we destroy the shader */
-      g_object_set_qdata (G_OBJECT (self), quark_shader_data, NULL);
-      return TRUE;
-    }
-
-  shader_data = g_object_get_qdata (G_OBJECT (self), quark_shader_data);
-  if (shader_data == NULL)
-    {
-      shader_data = g_slice_new (ShaderData);
-      shader_data->actor = self;
-      shader_data->shader = NULL;
-      shader_data->value_hash =
-        g_hash_table_new_full (g_str_hash, g_str_equal,
-                               g_free,
-                               shader_value_free);
-
-      g_object_set_qdata_full (G_OBJECT (self), quark_shader_data,
-                               shader_data,
-                               destroy_shader_data);
-    }
-
-  if (shader_data->shader != NULL)
-    g_object_unref (shader_data->shader);
-
-  shader_data->shader = shader;
-
-  clutter_actor_queue_redraw (self);
-
-  return TRUE;
-}
-
-
-static void
-set_each_param (gpointer key,
-                gpointer value,
-                gpointer user_data)
-{
-  ClutterShader *shader = user_data;
-  const gchar *uniform = key;
-  GValue *var = value;
-
-  clutter_shader_set_uniform (shader, uniform, var);
-}
-
-static void
-clutter_actor_shader_pre_paint (ClutterActor *actor,
-                                gboolean      repeat)
-{
-  ShaderData *shader_data;
-  ClutterShader *shader;
-
-  shader_data = g_object_get_qdata (G_OBJECT (actor), quark_shader_data);
-  if (shader_data == NULL)
-    return;
-
-  shader = shader_data->shader;
-  if (shader != NULL)
-    {
-      clutter_shader_set_is_enabled (shader, TRUE);
-
-      g_hash_table_foreach (shader_data->value_hash, set_each_param, shader);
-
-      if (!repeat)
-        _clutter_context_push_shader_stack (actor);
-    }
-}
-
-static void
-clutter_actor_shader_post_paint (ClutterActor *actor)
-{
-  ShaderData *shader_data;
-  ClutterShader *shader;
-
-  shader_data = g_object_get_qdata (G_OBJECT (actor), quark_shader_data);
-  if (shader_data == NULL)
-    return;
-
-  shader = shader_data->shader;
-  if (shader != NULL)
-    {
-      ClutterActor *head;
-
-      clutter_shader_set_is_enabled (shader, FALSE);
-
-      /* remove the actor from the shaders stack; if there is another
-       * actor inside it, then call pre-paint again to set its shader
-       * but this time with the second argument being TRUE, indicating
-       * that we are re-applying an existing shader and thus should it
-       * not be prepended to the stack
-       */
-      head = _clutter_context_pop_shader_stack (actor);
-      if (head != NULL)
-        clutter_actor_shader_pre_paint (head, TRUE);
-    }
-}
-
-static inline void
-clutter_actor_set_shader_param_internal (ClutterActor *self,
-                                         const gchar  *param,
-                                         const GValue *value)
-{
-  ShaderData *shader_data;
-  GValue *var;
-
-  shader_data = g_object_get_qdata (G_OBJECT (self), quark_shader_data);
-  if (shader_data == NULL)
-    return;
-
-  var = g_slice_new0 (GValue);
-  g_value_init (var, G_VALUE_TYPE (value));
-  g_value_copy (value, var);
-  g_hash_table_insert (shader_data->value_hash, g_strdup (param), var);
-
-  clutter_actor_queue_redraw (self);
-}
-
-/**
- * clutter_actor_set_shader_param:
- * @self: a #ClutterActor
- * @param: the name of the parameter
- * @value: the value of the parameter
- *
- * Sets the value for a named parameter of the shader applied
- * to @actor.
- *
- * Since: 1.0
- *
- * Deprecated: 1.8: Use clutter_shader_effect_set_uniform_value() instead
- */
-void
-clutter_actor_set_shader_param (ClutterActor *self,
-                                const gchar  *param,
-                                const GValue *value)
-{
-  g_return_if_fail (CLUTTER_IS_ACTOR (self));
-  g_return_if_fail (param != NULL);
-  g_return_if_fail (CLUTTER_VALUE_HOLDS_SHADER_FLOAT (value) ||
-                    CLUTTER_VALUE_HOLDS_SHADER_INT (value) ||
-                    CLUTTER_VALUE_HOLDS_SHADER_MATRIX (value) ||
-                    G_VALUE_HOLDS_FLOAT (value) ||
-                    G_VALUE_HOLDS_INT (value));
-
-  clutter_actor_set_shader_param_internal (self, param, value);
-}
-
-/**
- * clutter_actor_set_shader_param_float:
- * @self: a #ClutterActor
- * @param: the name of the parameter
- * @value: the value of the parameter
- *
- * Sets the value for a named float parameter of the shader applied
- * to @actor.
- *
- * Since: 0.8
- *
- * Deprecated: 1.8: Use clutter_shader_effect_set_uniform() instead
- */
-void
-clutter_actor_set_shader_param_float (ClutterActor *self,
-                                      const gchar  *param,
-                                      gfloat        value)
-{
-  GValue var = { 0, };
-
-  g_value_init (&var, G_TYPE_FLOAT);
-  g_value_set_float (&var, value);
-
-  clutter_actor_set_shader_param_internal (self, param, &var);
-
-  g_value_unset (&var);
-}
-
-/**
- * clutter_actor_set_shader_param_int:
- * @self: a #ClutterActor
- * @param: the name of the parameter
- * @value: the value of the parameter
- *
- * Sets the value for a named int parameter of the shader applied to
- * @actor.
- *
- * Since: 0.8
- *
- * Deprecated: 1.8: Use clutter_shader_effect_set_uniform() instead
- */
-void
-clutter_actor_set_shader_param_int (ClutterActor *self,
-                                    const gchar  *param,
-                                    gint          value)
-{
-  GValue var = { 0, };
-
-  g_value_init (&var, G_TYPE_INT);
-  g_value_set_int (&var, value);
-
-  clutter_actor_set_shader_param_internal (self, param, &var);
-
-  g_value_unset (&var);
-}
-
 /**
  * clutter_actor_is_rotated:
  * @self: a #ClutterActor
diff --git a/clutter/deprecated/clutter-actor-deprecated.c b/clutter/deprecated/clutter-actor-deprecated.c
new file mode 100644
index 0000000..9a8c32e
--- /dev/null
+++ b/clutter/deprecated/clutter-actor-deprecated.c
@@ -0,0 +1,318 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <glib-object.h>
+
+#define CLUTTER_DISABLE_DEPRECATION_WARNINGS
+
+#include "clutter-actor-private.h"
+#include "clutter-private.h"
+#include "clutter-shader.h"
+
+typedef struct _ShaderData ShaderData;
+
+struct _ShaderData
+{
+  ClutterShader *shader;
+
+  /* back pointer to the actor */
+  ClutterActor *actor;
+
+  /* list of values that should be set on the shader
+   * before each paint cycle
+   */
+  GHashTable *value_hash;
+};
+
+static void
+shader_value_free (gpointer data)
+{
+  GValue *var = data;
+  g_value_unset (var);
+  g_slice_free (GValue, var);
+}
+
+static void
+destroy_shader_data (gpointer data)
+{
+  ShaderData *shader_data = data;
+
+  if (shader_data == NULL)
+    return;
+
+  if (shader_data->shader != NULL)
+    {
+      g_object_unref (shader_data->shader);
+      shader_data->shader = NULL;
+    }
+
+  if (shader_data->value_hash != NULL)
+    {
+      g_hash_table_destroy (shader_data->value_hash);
+      shader_data->value_hash = NULL;
+    }
+
+  g_slice_free (ShaderData, shader_data);
+}
+
+/**
+ * clutter_actor_get_shader:
+ * @self: a #ClutterActor
+ *
+ * Queries the currently set #ClutterShader on @self.
+ *
+ * Return value: (transfer none): The currently set #ClutterShader
+ *   or %NULL if no shader is set.
+ *
+ * Since: 0.6
+ *
+ * Deprecated: 1.8: Use clutter_actor_get_effect() instead.
+ */
+ClutterShader *
+clutter_actor_get_shader (ClutterActor *self)
+{
+  ShaderData *shader_data;
+
+  g_return_val_if_fail (CLUTTER_IS_ACTOR (self), NULL);
+
+  shader_data = g_object_get_data (G_OBJECT (self), "-clutter-actor-shader-data");
+  if (shader_data != NULL)
+    return shader_data->shader;
+
+  return NULL;
+}
+
+/**
+ * clutter_actor_set_shader:
+ * @self: a #ClutterActor
+ * @shader: (allow-none): a #ClutterShader or %NULL to unset the shader.
+ *
+ * Sets the #ClutterShader to be used when rendering @self.
+ *
+ * If @shader is %NULL this function will unset any currently set shader
+ * for the actor.
+ *
+ * <note>Any #ClutterEffect applied to @self will take the precedence
+ * over the #ClutterShader set using this function.</note>
+ *
+ * Return value: %TRUE if the shader was successfully applied
+ *   or removed
+ *
+ * Since: 0.6
+ *
+ * Deprecated: 1.8: Use #ClutterShaderEffect and
+ *   clutter_actor_add_effect() instead.
+ */
+gboolean
+clutter_actor_set_shader (ClutterActor  *self,
+                          ClutterShader *shader)
+{
+  ShaderData *shader_data;
+
+  g_return_val_if_fail (CLUTTER_IS_ACTOR (self), FALSE);
+  g_return_val_if_fail (shader == NULL || CLUTTER_IS_SHADER (shader), FALSE);
+
+  if (shader != NULL)
+    g_object_ref (shader);
+  else
+    {
+      /* if shader passed in is NULL we destroy the shader */
+      g_object_set_data (G_OBJECT (self), "-clutter-actor-shader-data", NULL);
+      return TRUE;
+    }
+
+  shader_data = g_object_get_data (G_OBJECT (self), "-clutter-actor-shader-data");
+  if (shader_data == NULL)
+    {
+      shader_data = g_slice_new (ShaderData);
+      shader_data->actor = self;
+      shader_data->shader = NULL;
+      shader_data->value_hash =
+        g_hash_table_new_full (g_str_hash, g_str_equal,
+                               g_free,
+                               shader_value_free);
+
+      g_object_set_data_full (G_OBJECT (self), "-clutter-actor-shader-data",
+                              shader_data,
+                              destroy_shader_data);
+    }
+
+  if (shader_data->shader != NULL)
+    g_object_unref (shader_data->shader);
+
+  shader_data->shader = shader;
+
+  clutter_actor_queue_redraw (self);
+
+  return TRUE;
+}
+
+static void
+set_each_param (gpointer key,
+                gpointer value,
+                gpointer user_data)
+{
+  ClutterShader *shader = user_data;
+  const gchar *uniform = key;
+  GValue *var = value;
+
+  clutter_shader_set_uniform (shader, uniform, var);
+}
+
+void
+_clutter_actor_shader_pre_paint (ClutterActor *actor,
+                                 gboolean      repeat)
+{
+  ShaderData *shader_data;
+  ClutterShader *shader;
+
+  shader_data = g_object_get_data (G_OBJECT (actor), "-clutter-actor-shader-data");
+  if (shader_data == NULL)
+    return;
+
+  shader = shader_data->shader;
+  if (shader != NULL)
+    {
+      clutter_shader_set_is_enabled (shader, TRUE);
+
+      g_hash_table_foreach (shader_data->value_hash, set_each_param, shader);
+
+      if (!repeat)
+        _clutter_context_push_shader_stack (actor);
+    }
+}
+
+void
+_clutter_actor_shader_post_paint (ClutterActor *actor)
+{
+  ShaderData *shader_data;
+  ClutterShader *shader;
+
+  shader_data = g_object_get_data (G_OBJECT (actor), "-clutter-actor-shader-data");
+  if (G_LIKELY (shader_data == NULL))
+    return;
+
+  shader = shader_data->shader;
+  if (shader != NULL)
+    {
+      ClutterActor *head;
+
+      clutter_shader_set_is_enabled (shader, FALSE);
+
+      /* remove the actor from the shaders stack; if there is another
+       * actor inside it, then call pre-paint again to set its shader
+       * but this time with the second argument being TRUE, indicating
+       * that we are re-applying an existing shader and thus should it
+       * not be prepended to the stack
+       */
+      head = _clutter_context_pop_shader_stack (actor);
+      if (head != NULL)
+        _clutter_actor_shader_pre_paint (head, TRUE);
+    }
+}
+
+static inline void
+clutter_actor_set_shader_param_internal (ClutterActor *self,
+                                         const gchar  *param,
+                                         const GValue *value)
+{
+  ShaderData *shader_data;
+  GValue *var;
+
+  shader_data = g_object_get_data (G_OBJECT (self), "-clutter-actor-shader-data");
+  if (shader_data == NULL)
+    return;
+
+  var = g_slice_new0 (GValue);
+  g_value_init (var, G_VALUE_TYPE (value));
+  g_value_copy (value, var);
+  g_hash_table_insert (shader_data->value_hash, g_strdup (param), var);
+
+  clutter_actor_queue_redraw (self);
+}
+
+/**
+ * clutter_actor_set_shader_param:
+ * @self: a #ClutterActor
+ * @param: the name of the parameter
+ * @value: the value of the parameter
+ *
+ * Sets the value for a named parameter of the shader applied
+ * to @actor.
+ *
+ * Since: 1.0
+ *
+ * Deprecated: 1.8: Use clutter_shader_effect_set_uniform_value() instead
+ */
+void
+clutter_actor_set_shader_param (ClutterActor *self,
+                                const gchar  *param,
+                                const GValue *value)
+{
+  g_return_if_fail (CLUTTER_IS_ACTOR (self));
+  g_return_if_fail (param != NULL);
+  g_return_if_fail (CLUTTER_VALUE_HOLDS_SHADER_FLOAT (value) ||
+                    CLUTTER_VALUE_HOLDS_SHADER_INT (value) ||
+                    CLUTTER_VALUE_HOLDS_SHADER_MATRIX (value) ||
+                    G_VALUE_HOLDS_FLOAT (value) ||
+                    G_VALUE_HOLDS_INT (value));
+
+  clutter_actor_set_shader_param_internal (self, param, value);
+}
+
+/**
+ * clutter_actor_set_shader_param_float:
+ * @self: a #ClutterActor
+ * @param: the name of the parameter
+ * @value: the value of the parameter
+ *
+ * Sets the value for a named float parameter of the shader applied
+ * to @actor.
+ *
+ * Since: 0.8
+ *
+ * Deprecated: 1.8: Use clutter_shader_effect_set_uniform() instead
+ */
+void
+clutter_actor_set_shader_param_float (ClutterActor *self,
+                                      const gchar  *param,
+                                      gfloat        value)
+{
+  GValue var = { 0, };
+
+  g_value_init (&var, G_TYPE_FLOAT);
+  g_value_set_float (&var, value);
+
+  clutter_actor_set_shader_param_internal (self, param, &var);
+
+  g_value_unset (&var);
+}
+
+/**
+ * clutter_actor_set_shader_param_int:
+ * @self: a #ClutterActor
+ * @param: the name of the parameter
+ * @value: the value of the parameter
+ *
+ * Sets the value for a named int parameter of the shader applied to
+ * @actor.
+ *
+ * Since: 0.8
+ *
+ * Deprecated: 1.8: Use clutter_shader_effect_set_uniform() instead
+ */
+void
+clutter_actor_set_shader_param_int (ClutterActor *self,
+                                    const gchar  *param,
+                                    gint          value)
+{
+  GValue var = { 0, };
+
+  g_value_init (&var, G_TYPE_INT);
+  g_value_set_int (&var, value);
+
+  clutter_actor_set_shader_param_internal (self, param, &var);
+
+  g_value_unset (&var);
+}