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GSK is conceptually split into two scene graphs: * a simple rendering tree of operations * a complex set of logical layers The latter is built on the former, and adds convenience and high level API for application developers. The lower layer, though, is what gets transformed into the rendering pipeline, as it's simple and thus can be transformed into appropriate rendering commands with minimal state changes. The lower layer is also suitable for reuse from more complex higher layers, like the CSS machinery in GTK, without necessarily port those layers to the GSK high level API. This lower layer is based on GskRenderNode instances, which represent the tree of rendering operations; and a GskRenderer instance, which takes the render nodes and submits them (after potentially reordering and transforming them to a more appropriate representation) to the underlying graphic system.
118 lines
5.6 KiB
C
118 lines
5.6 KiB
C
/* GSK - The GTK Scene Kit
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*
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* Copyright 2016 Endless
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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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#ifndef __GSK_RENDER_NODE_H__
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#define __GSK_RENDER_NODE_H__
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#if !defined (__GSK_H_INSIDE__) && !defined (GSK_COMPILATION)
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#error "Only <gsk/gsk.h> can be included directly."
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#endif
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#include <gsk/gsktypes.h>
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G_BEGIN_DECLS
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#define GSK_TYPE_RENDER_NODE (gsk_render_node_get_type ())
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#define GSK_RENDER_NODE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GSK_TYPE_RENDER_NODE, GskRenderNode))
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#define GSK_IS_RENDER_NODE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GSK_TYPE_RENDER_NODE))
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typedef struct _GskRenderNode GskRenderNode;
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typedef struct _GskRenderNodeClass GskRenderNodeClass;
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GDK_AVAILABLE_IN_3_22
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GType gsk_render_node_get_type (void) G_GNUC_CONST;
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_new (void);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_get_parent (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_get_first_child (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_get_last_child (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_get_next_sibling (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_get_previous_sibling (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_insert_child_at_pos (GskRenderNode *node,
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GskRenderNode *child,
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int index_);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_insert_child_before (GskRenderNode *node,
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GskRenderNode *child,
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GskRenderNode *sibling);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_insert_child_after (GskRenderNode *node,
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GskRenderNode *child,
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GskRenderNode *sibling);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_remove_child (GskRenderNode *node,
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GskRenderNode *child);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_replace_child (GskRenderNode *node,
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GskRenderNode *new_child,
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GskRenderNode *old_child);
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GDK_AVAILABLE_IN_3_22
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GskRenderNode * gsk_render_node_remove_all_children (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_22
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guint gsk_render_node_get_n_children (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_22
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gboolean gsk_render_node_contains (GskRenderNode *node,
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GskRenderNode *descendant);
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GDK_AVAILABLE_IN_3_22
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void gsk_render_node_set_bounds (GskRenderNode *node,
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const graphene_rect_t *bounds);
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GDK_AVAILABLE_IN_3_22
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void gsk_render_node_set_transform (GskRenderNode *node,
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const graphene_matrix_t *transform);
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GDK_AVAILABLE_IN_3_22
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void gsk_render_node_set_child_transform (GskRenderNode *node,
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const graphene_matrix_t *transform);
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GDK_AVAILABLE_IN_3_22
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void gsk_render_node_set_opacity (GskRenderNode *node,
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double opacity);
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GDK_AVAILABLE_IN_3_22
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void gsk_render_node_set_hidden (GskRenderNode *node,
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gboolean hidden);
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GDK_AVAILABLE_IN_3_22
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gboolean gsk_render_node_is_hidden (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_22
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void gsk_render_node_set_opaque (GskRenderNode *node,
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gboolean opaque);
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GDK_AVAILABLE_IN_3_22
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gboolean gsk_render_node_is_opaque (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_22
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void gsk_render_node_set_surface (GskRenderNode *node,
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cairo_surface_t *surface);
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GDK_AVAILABLE_IN_3_22
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cairo_t * gsk_render_node_get_draw_context (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_22
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void gsk_render_node_set_name (GskRenderNode *node,
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const char *name);
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G_END_DECLS
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#endif /* __GSK_RENDER_NODE_H__ */
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