forked from AuroraMiddleware/gtk
2a08641f59
Add private api to find out if the content of a render node should be considered 'deep'. The information is collected at creation time, so there is no tree-walking involved when we are using this information in the renderer. Currently, this comes down to whether there are any texture nodes with high depth textures in the subtree. In the future, we may want to allow marking gradient nodes in this way as well.
120 lines
5.1 KiB
C
120 lines
5.1 KiB
C
#ifndef __GSK_RENDER_NODE_PRIVATE_H__
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#define __GSK_RENDER_NODE_PRIVATE_H__
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#include "gskrendernode.h"
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#include <cairo.h>
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G_BEGIN_DECLS
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typedef struct _GskRenderNodeClass GskRenderNodeClass;
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/* Keep this in sync with the GskRenderNodeType enumeration.
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*
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* We don't add an "n-types" value to avoid having to handle
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* it in every single switch.
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*/
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#define GSK_RENDER_NODE_TYPE_N_TYPES (GSK_GL_SHADER_NODE + 1)
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extern GType gsk_render_node_types[];
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#define GSK_IS_RENDER_NODE_TYPE(node,type) \
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(G_TYPE_INSTANCE_GET_CLASS ((node), GSK_TYPE_RENDER_NODE, GskRenderNodeClass)->node_type == (type))
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struct _GskRenderNode
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{
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GTypeInstance parent_instance;
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gatomicrefcount ref_count;
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graphene_rect_t bounds;
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guint prefers_high_depth : 1;
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};
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struct _GskRenderNodeClass
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{
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GTypeClass parent_class;
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GskRenderNodeType node_type;
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void (* finalize) (GskRenderNode *node);
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void (* draw) (GskRenderNode *node,
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cairo_t *cr);
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gboolean (* can_diff) (const GskRenderNode *node1,
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const GskRenderNode *node2);
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void (* diff) (GskRenderNode *node1,
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GskRenderNode *node2,
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cairo_region_t *region);
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};
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/*< private >
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* GskRenderNodeTypeInfo:
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* @node_type: the render node type in the `GskRenderNodeType` enumeration
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* @instance_size: the size of the render node instance
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* @instance_init: (nullable): the instance initialization function
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* @finalize: (nullable): the instance finalization function; must chain up to the
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* implementation of the parent class
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* @draw: the function called by gsk_render_node_draw()
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* @can_diff: (nullable): the function called by gsk_render_node_can_diff(); if
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* unset, gsk_render_node_can_diff_true() will be used
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* @diff: (nullable): the function called by gsk_render_node_diff(); if unset,
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* gsk_render_node_diff_impossible() will be used
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*
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* A struction that contains the type information for a `GskRenderNode` subclass,
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* to be used by gsk_render_node_type_register_static().
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*/
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typedef struct
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{
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GskRenderNodeType node_type;
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gsize instance_size;
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void (* instance_init) (GskRenderNode *node);
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void (* finalize) (GskRenderNode *node);
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void (* draw) (GskRenderNode *node,
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cairo_t *cr);
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gboolean (* can_diff) (const GskRenderNode *node1,
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const GskRenderNode *node2);
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void (* diff) (GskRenderNode *node1,
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GskRenderNode *node2,
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cairo_region_t *region);
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} GskRenderNodeTypeInfo;
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void gsk_render_node_init_types (void);
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GType gsk_render_node_type_register_static (const char *node_name,
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const GskRenderNodeTypeInfo *node_info);
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gpointer gsk_render_node_alloc (GskRenderNodeType node_type);
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gboolean gsk_render_node_can_diff (const GskRenderNode *node1,
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const GskRenderNode *node2) G_GNUC_PURE;
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void gsk_render_node_diff (GskRenderNode *node1,
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GskRenderNode *node2,
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cairo_region_t *region);
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void gsk_render_node_diff_impossible (GskRenderNode *node1,
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GskRenderNode *node2,
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cairo_region_t *region);
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void gsk_container_node_diff_with (GskRenderNode *container,
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GskRenderNode *other,
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cairo_region_t *region);
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bool gsk_border_node_get_uniform (const GskRenderNode *self);
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bool gsk_border_node_get_uniform_color (const GskRenderNode *self);
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void gsk_text_node_serialize_glyphs (GskRenderNode *self,
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GString *str);
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GskRenderNode ** gsk_container_node_get_children (const GskRenderNode *node,
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guint *n_children);
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void gsk_transform_node_get_translate (const GskRenderNode *node,
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float *dx,
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float *dy);
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gboolean gsk_render_node_prefers_high_depth (const GskRenderNode *node);
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G_END_DECLS
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#endif /* __GSK_RENDER_NODE_PRIVATE_H__ */
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