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The PaintNode hierarchy should have the ability to retrieve the current active framebuffer by itself, instead of asking Cogl using the global state API. In order to do this, we ask the root node of a PaintNode graph for the active framebuffer. In the current, 1.x-compatibility mode we have two potential root node types: ClutterRootNode, used by ClutterStage; and ClutterDummyNode, used a local root for each actor. The former takes a framebuffer as part of its construction; the latter takes the actor that acts as the local top-level during the actor's paint sequence, which means we can get the active framebuffer from the stage associated to the actor. By keeping track of the active framebuffer on the node themselves we can drop the usage of cogl_get_draw_framebuffer() in their implementation.
172 lines
6.7 KiB
C
172 lines
6.7 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2011 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author:
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* Emmanuele Bassi <ebassi@linux.intel.com>
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*/
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#ifndef __CLUTTER_PAINT_NODE_PRIVATE_H__
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#define __CLUTTER_PAINT_NODE_PRIVATE_H__
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#include <glib-object.h>
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#include <json-glib/json-glib.h>
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#include <clutter/clutter-paint-node.h>
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G_BEGIN_DECLS
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#define CLUTTER_PAINT_NODE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_PAINT_NODE, ClutterPaintNodeClass))
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#define CLUTTER_IS_PAINT_NODE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_PAINT_NODE))
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#define CLUTTER_PAINT_NODE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_PAINT_NODE, ClutterPaintNodeClass))
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typedef struct _ClutterPaintOperation ClutterPaintOperation;
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struct _ClutterPaintNode
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{
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GTypeInstance parent_instance;
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ClutterPaintNode *parent;
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ClutterPaintNode *first_child;
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ClutterPaintNode *prev_sibling;
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ClutterPaintNode *next_sibling;
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ClutterPaintNode *last_child;
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guint n_children;
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GArray *operations;
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gchar *name;
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volatile int ref_count;
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};
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struct _ClutterPaintNodeClass
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{
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GTypeClass base_class;
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void (* finalize) (ClutterPaintNode *node);
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gboolean (* pre_draw) (ClutterPaintNode *node);
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void (* draw) (ClutterPaintNode *node);
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void (* post_draw) (ClutterPaintNode *node);
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JsonNode*(* serialize) (ClutterPaintNode *node);
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CoglFramebuffer *(* get_framebuffer) (ClutterPaintNode *node);
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};
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#define PAINT_OP_INIT { PAINT_OP_INVALID }
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typedef enum {
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PAINT_OP_INVALID = 0,
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PAINT_OP_TEX_RECT,
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PAINT_OP_PATH,
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PAINT_OP_PRIMITIVE
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} PaintOpCode;
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struct _ClutterPaintOperation
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{
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PaintOpCode opcode;
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union {
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float texrect[8];
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CoglPath *path;
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CoglPrimitive *primitive;
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} op;
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};
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GType _clutter_root_node_get_type (void) G_GNUC_CONST;
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GType _clutter_transform_node_get_type (void) G_GNUC_CONST;
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GType _clutter_dummy_node_get_type (void) G_GNUC_CONST;
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void _clutter_paint_operation_paint_rectangle (const ClutterPaintOperation *op);
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void _clutter_paint_operation_clip_rectangle (const ClutterPaintOperation *op);
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void _clutter_paint_operation_paint_path (const ClutterPaintOperation *op);
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void _clutter_paint_operation_clip_path (const ClutterPaintOperation *op);
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void _clutter_paint_operation_paint_primitive (const ClutterPaintOperation *op);
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void _clutter_paint_node_init_types (void);
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gpointer _clutter_paint_node_create (GType gtype);
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ClutterPaintNode * _clutter_root_node_new (CoglFramebuffer *framebuffer,
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const ClutterColor *clear_color,
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CoglBufferBit clear_flags);
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ClutterPaintNode * _clutter_transform_node_new (const CoglMatrix *matrix);
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ClutterPaintNode * _clutter_dummy_node_new (ClutterActor *actor);
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void _clutter_paint_node_paint (ClutterPaintNode *root);
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void _clutter_paint_node_dump_tree (ClutterPaintNode *root);
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G_GNUC_INTERNAL
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void clutter_paint_node_remove_child (ClutterPaintNode *node,
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ClutterPaintNode *child);
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G_GNUC_INTERNAL
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void clutter_paint_node_replace_child (ClutterPaintNode *node,
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ClutterPaintNode *old_child,
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ClutterPaintNode *new_child);
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G_GNUC_INTERNAL
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void clutter_paint_node_remove_all (ClutterPaintNode *node);
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G_GNUC_INTERNAL
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guint clutter_paint_node_get_n_children (ClutterPaintNode *node);
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G_GNUC_INTERNAL
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ClutterPaintNode * clutter_paint_node_get_first_child (ClutterPaintNode *node);
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G_GNUC_INTERNAL
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ClutterPaintNode * clutter_paint_node_get_previous_sibling (ClutterPaintNode *node);
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G_GNUC_INTERNAL
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ClutterPaintNode * clutter_paint_node_get_next_sibling (ClutterPaintNode *node);
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G_GNUC_INTERNAL
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ClutterPaintNode * clutter_paint_node_get_last_child (ClutterPaintNode *node);
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G_GNUC_INTERNAL
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ClutterPaintNode * clutter_paint_node_get_parent (ClutterPaintNode *node);
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G_GNUC_INTERNAL
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CoglFramebuffer * clutter_paint_node_get_framebuffer (ClutterPaintNode *node);
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#define CLUTTER_TYPE_LAYER_NODE (_clutter_layer_node_get_type ())
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#define CLUTTER_LAYER_NODE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_LAYER_NODE, ClutterLayerNode))
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#define CLUTTER_IS_LAYER_NODE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_LAYER_NODE))
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/*
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* ClutterLayerNode:
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*
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* The <structname>ClutterLayerNode</structname> structure is an opaque
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* type whose members cannot be directly accessed.
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*
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* Since: 1.10
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*/
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typedef struct _ClutterLayerNode ClutterLayerNode;
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typedef struct _ClutterLayerNodeClass ClutterLayerNodeClass;
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GType _clutter_layer_node_get_type (void) G_GNUC_CONST;
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ClutterPaintNode * _clutter_layer_node_new (const CoglMatrix *projection,
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const cairo_rectangle_t *viewport,
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float width,
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float height,
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guint8 opacity);
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G_END_DECLS
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#endif /* __CLUTTER_PAINT_NODE_PRIVATE_H__ */
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