mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-13 12:20:10 +00:00
3d90a070d5
Render nodes need access to rendering information like scaling factors. If we keep render nodes separate from renderers until we submit a nodes tree for rendering we're going to have to duplicate all that information in a way that makes the API more complicated and fuzzier on its semantics. By having GskRenderer create GskRenderNode instances we can tie nodes and renderers together; since higher layers will also have access to the renderer instance, this does not add any burden to callers. Additionally, if memory measurements indicate that we are spending too much time in the allocation of new render nodes, we can now easily implement a free-list or a renderer-specific allocator without breaking the API.
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
#ifndef __GSK_RENDER_NODE_PRIVATE_H__
|
|
#define __GSK_RENDER_NODE_PRIVATE_H__
|
|
|
|
#include "gskrendernode.h"
|
|
#include "gskrenderer.h"
|
|
#include <cairo.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GSK_RENDER_NODE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GSK_TYPE_RENDER_NODE, GskRenderNodeClass))
|
|
#define GSK_IS_RENDER_NODE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GSK_TYPE_RENDER_NODE))
|
|
#define GSK_RENDER_NODE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GSK_TYPE_RENDER_NODE, GskRenderNodeClass))
|
|
|
|
struct _GskRenderNode
|
|
{
|
|
GTypeInstance parent_instance;
|
|
|
|
volatile int ref_count;
|
|
|
|
/* Back pointer to the renderer that created the node */
|
|
GskRenderer *renderer;
|
|
|
|
/* The graph */
|
|
GskRenderNode *parent;
|
|
GskRenderNode *first_child;
|
|
GskRenderNode *last_child;
|
|
GskRenderNode *prev_sibling;
|
|
GskRenderNode *next_sibling;
|
|
|
|
int n_children;
|
|
|
|
/* Use for debugging */
|
|
char *name;
|
|
|
|
/* Tag updated when adding/removing children */
|
|
gint64 age;
|
|
|
|
/* The contents of the node */
|
|
cairo_surface_t *surface;
|
|
|
|
/* Paint opacity */
|
|
double opacity;
|
|
|
|
/* Blend mode */
|
|
GskBlendMode blend_mode;
|
|
|
|
/* Clip rectangle */
|
|
graphene_rect_t bounds;
|
|
|
|
/* Transformations relative to the root of the scene */
|
|
graphene_matrix_t world_matrix;
|
|
|
|
/* Transformations applied to the node */
|
|
graphene_matrix_t transform;
|
|
|
|
/* Transformations applied to the children of the node */
|
|
graphene_matrix_t child_transform;
|
|
|
|
/* Bit fields; leave at the end */
|
|
gboolean is_mutable : 1;
|
|
gboolean hidden : 1;
|
|
gboolean opaque : 1;
|
|
gboolean transform_set : 1;
|
|
gboolean child_transform_set : 1;
|
|
gboolean needs_world_matrix_update : 1;
|
|
};
|
|
|
|
struct _GskRenderNodeClass
|
|
{
|
|
GTypeClass parent_class;
|
|
|
|
void (* finalize) (GskRenderNode *node);
|
|
};
|
|
|
|
GskRenderNode *gsk_render_node_new (GskRenderer *renderer);
|
|
|
|
void gsk_render_node_make_immutable (GskRenderNode *node);
|
|
|
|
void gsk_render_node_get_bounds (GskRenderNode *node,
|
|
graphene_rect_t *frame);
|
|
void gsk_render_node_get_transform (GskRenderNode *node,
|
|
graphene_matrix_t *mv);
|
|
double gsk_render_node_get_opacity (GskRenderNode *node);
|
|
|
|
cairo_surface_t *gsk_render_node_get_surface (GskRenderNode *node);
|
|
|
|
GskRenderNode *gsk_render_node_get_toplevel (GskRenderNode *node);
|
|
|
|
void gsk_render_node_update_world_matrix (GskRenderNode *node,
|
|
gboolean force);
|
|
|
|
void gsk_render_node_get_world_matrix (GskRenderNode *node,
|
|
graphene_matrix_t *mv);
|
|
|
|
int gsk_render_node_get_size (GskRenderNode *root);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GSK_RENDER_NODE_PRIVATE_H__ */
|