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2fa9dddea6
Lots of border nodes have all the same width and the same color. Renderers might be able to simplifty that, so keep an extra bit per border node.
102 lines
4.0 KiB
C
102 lines
4.0 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_DEBUG_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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};
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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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bool gsk_border_node_get_uniform (GskRenderNode *self);
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G_END_DECLS
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#endif /* __GSK_RENDER_NODE_PRIVATE_H__ */
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