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Now that we have a proper scene graph API, we should split out the rendering part from the logical and event handling part. ClutterPaintNode is a lightweight fundamental type that encodes only the paint operations: pipeline state and geometry. At its most simple, is a way to structure setting up the programmable pipeline using a CoglPipeline, and submitting Cogl primitives. The important take away from this API is that you are not allowed to call Cogl API like cogl_set_source() or cogl_primitive_draw() directly. The interesting approach to this is that, in the future, we should be able to move to a purely retained mode: we will decide which actors need to be painted, they will update their own branch of the render graph, and we'll take the render graph and build all the rendering commands from that. For the 1.x API, we will have to maintain invariants and the existing behaviour, but as soon as we can break API, the old paint signal will just go away, and Actors will only be allowed to manipulate the render tree.
162 lines
6.4 KiB
C
162 lines
6.4 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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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#ifndef __CLUTTER_PAINT_NODES_H__
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#define __CLUTTER_PAINT_NODES_H__
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#include <cogl/cogl.h>
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#include <clutter/clutter-types.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_COLOR_NODE (clutter_color_node_get_type ())
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#define CLUTTER_COLOR_NODE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_COLOR_NODE, ClutterColorNode))
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#define CLUTTER_IS_COLOR_NODE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_COLOR_NODE))
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/**
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* ClutterColorNode:
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*
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* The <structname>ClutterTextNode</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 _ClutterColorNode ClutterColorNode;
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typedef struct _ClutterColorNodeClass ClutterColorNodeClass;
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GType clutter_color_node_get_type (void) G_GNUC_CONST;
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ClutterPaintNode * clutter_color_node_new (const ClutterColor *color);
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#define CLUTTER_TYPE_TEXTURE_NODE (clutter_texture_node_get_type ())
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#define CLUTTER_TEXTURE_NODE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_TEXTURE_NODE, ClutterTextureNode))
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#define CLUTTER_IS_TEXTURE_NODE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_TEXTURE_NODE))
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/**
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* ClutterTextureNode:
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*
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* The <structname>ClutterTextNode</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 _ClutterTextureNode ClutterTextureNode;
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typedef struct _ClutterTextureNodeClass ClutterTextureNodeClass;
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GType clutter_texture_node_get_type (void) G_GNUC_CONST;
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ClutterPaintNode * clutter_texture_node_new (CoglTexture *texture,
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const ClutterColor *color);
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#define CLUTTER_TYPE_CLIP_NODE (clutter_clip_node_get_type ())
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#define CLUTTER_CLIP_NODE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_CLIP_NODE, ClutterClipNode))
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#define CLUTTER_IS_CLIP_NODE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_CLIP_NODE))
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/**
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* ClutterClipNode:
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*
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* The <structname>ClutterTextNode</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 _ClutterClipNode ClutterClipNode;
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typedef struct _ClutterClipNodeClass ClutterClipNodeClass;
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GType clutter_clip_node_get_type (void) G_GNUC_CONST;
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ClutterPaintNode * clutter_clip_node_new (void);
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#define CLUTTER_TYPE_PIPELINE_NODE (clutter_pipeline_node_get_type ())
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#define CLUTTER_PIPELINE_NODE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_PIPELINE_NODE, ClutterPipelineNode))
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#define CLUTTER_IS_PIPELINE_NODE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_PIPELINE_NODE))
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/**
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* ClutterPipelineNode:
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*
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* The <structname>ClutterTextNode</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 _ClutterPipelineNode ClutterPipelineNode;
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typedef struct _ClutterPipelineNodeClass ClutterPipelineNodeClass;
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GType clutter_pipeline_node_get_type (void) G_GNUC_CONST;
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#if defined(COGL_ENABLE_EXPERIMENTAL_2_0_API) && defined(CLUTTER_ENABLE_EXPERIMENTAL_API)
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ClutterPaintNode * clutter_pipeline_node_new (CoglPipeline *pipeline);
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#endif /* COGL_ENABLE_EXPERIMENTAL_2_0_API && CLUTTER_ENABLE_EXPERIMENTAL_API */
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#define CLUTTER_TYPE_TEXT_NODE (clutter_text_node_get_type ())
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#define CLUTTER_TEXT_NODE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_TEXT_NODE, ClutterTextNode))
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#define CLUTTER_IS_TEXT_NODE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_TEXT_NODE))
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/**
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* ClutterTextNode:
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*
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* The <structname>ClutterTextNode</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 _ClutterTextNode ClutterTextNode;
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typedef struct _ClutterTextNodeClass ClutterTextNodeClass;
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GType clutter_text_node_get_type (void) G_GNUC_CONST;
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ClutterPaintNode * clutter_text_node_new (PangoLayout *layout,
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const ClutterColor *color);
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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_NODES_H__ */
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