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gtk2/gsk/gskrendernodeprivate.h

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Initial implementation of GSK rendering pipeline 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.
2016-03-17 13:48:19 +00:00
#ifndef __GSK_RENDER_NODE_PRIVATE_H__
#define __GSK_RENDER_NODE_PRIVATE_H__
#include "gskrendernode.h"
#include <cairo.h>
G_BEGIN_DECLS
gsk: Introduce GskRenderNodeClass This is modeled after GtkCssValueClass. So far it doesn't do anything.
2016-12-11 02:57:42 +00:00
typedef struct _GskRenderNodeClass GskRenderNodeClass;
Turn GskRenderNode into a derivable type Language bindings—especially ones based on introspection—cannot deal with custom type hiearchies. Luckily for us, GType has a derivable type with low overhead: GTypeInstance. By turning GskRenderNode into a GTypeInstance, and creating derived types for each class of node, we can provide an introspectable API to our non-C API consumers, with no functional change to the C API itself.
2020-04-07 22:33:54 +00:00
/* Keep this in sync with the GskRenderNodeType enumeration.
*
* We don't add an "n-types" value to avoid having to handle
* it in every single switch.
*/
#define GSK_RENDER_NODE_TYPE_N_TYPES (GSK_DEBUG_NODE + 1)
Add get_type() functions for GskRenderNode subclasses The introspection scanner tries to match a type name with a get_type() function, in order to correctly identify a type as a class. If the function is not available, we have two choices: - add some special case inside the introspection scanner, similar to how GParamSpec subclasses are handled in GObject - add a simple get_type() function The latter is the simplest approach, and we don't need to change that much, since we still register all render nodes at once.
2020-04-08 14:34:11 +00:00
extern GType gsk_render_node_types[];
Turn GskRenderNode into a derivable type Language bindings—especially ones based on introspection—cannot deal with custom type hiearchies. Luckily for us, GType has a derivable type with low overhead: GTypeInstance. By turning GskRenderNode into a GTypeInstance, and creating derived types for each class of node, we can provide an introspectable API to our non-C API consumers, with no functional change to the C API itself.
2020-04-07 22:33:54 +00:00
#define GSK_IS_RENDER_NODE_TYPE(node,type) \
(G_TYPE_INSTANCE_GET_CLASS ((node), GSK_TYPE_RENDER_NODE, GskRenderNodeClass)->node_type == (type))
gsk: Introduce GskRenderNodeClass This is modeled after GtkCssValueClass. So far it doesn't do anything.
2016-12-11 02:57:42 +00:00
Initial implementation of GSK rendering pipeline 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.
2016-03-17 13:48:19 +00:00
struct _GskRenderNode
{
Turn GskRenderNode into a derivable type Language bindings—especially ones based on introspection—cannot deal with custom type hiearchies. Luckily for us, GType has a derivable type with low overhead: GTypeInstance. By turning GskRenderNode into a GTypeInstance, and creating derived types for each class of node, we can provide an introspectable API to our non-C API consumers, with no functional change to the C API itself.
2020-04-07 22:33:54 +00:00
GTypeInstance parent_instance;
gsk: Add GskRenderNodeType For now, this is unused.
2016-12-10 20:42:01 +00:00
Turn GskRenderNode into a derivable type Language bindings—especially ones based on introspection—cannot deal with custom type hiearchies. Luckily for us, GType has a derivable type with low overhead: GTypeInstance. By turning GskRenderNode into a GTypeInstance, and creating derived types for each class of node, we can provide an introspectable API to our non-C API consumers, with no functional change to the C API itself.
2020-04-07 22:33:54 +00:00
gatomicrefcount ref_count;
Initial implementation of GSK rendering pipeline 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.
2016-03-17 13:48:19 +00:00
gsk: Add bounds member to RenderNode Instead of constantly recalculating this (especially recursively for parents!) we do it only on construction, because everything is immutable anyway. Also, most nodes had a bounds already and can use the new parent member instead. We also do direct access to the node bounds rather than calling gsk_render_node_get_bounds in various places, which means we do less copying.
2016-12-21 10:21:38 +00:00
graphene_rect_t bounds;
Initial implementation of GSK rendering pipeline 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.
2016-03-17 13:48:19 +00:00
};
gsk: Introduce GskRenderNodeClass This is modeled after GtkCssValueClass. So far it doesn't do anything.
2016-12-11 02:57:42 +00:00
struct _GskRenderNodeClass
{
Turn GskRenderNode into a derivable type Language bindings—especially ones based on introspection—cannot deal with custom type hiearchies. Luckily for us, GType has a derivable type with low overhead: GTypeInstance. By turning GskRenderNode into a GTypeInstance, and creating derived types for each class of node, we can provide an introspectable API to our non-C API consumers, with no functional change to the C API itself.
2020-04-07 22:33:54 +00:00
GTypeClass parent_class;
gsk: Introduce GskRenderNodeClass This is modeled after GtkCssValueClass. So far it doesn't do anything.
2016-12-11 02:57:42 +00:00
GskRenderNodeType node_type;
rendernode: Add getters for box-shadow nodes
2017-01-17 23:05:25 +00:00
Make render node getter public Keeping these private does not really buy us anything.
2017-10-20 06:06:20 +00:00
void (* finalize) (GskRenderNode *node);
void (* draw) (GskRenderNode *node,
cairo_t *cr);
Add pure and const annotations to various functions
2020-01-24 12:17:09 +00:00
gboolean (* can_diff) (const GskRenderNode *node1,
const GskRenderNode *node2);
rendernode: Add gsk_render_node_diff() ... and gsk_render_node_can_diff(). Those are vfuncs to compute a region containing all the pixels that differ between the two nodes. This is just the plumbing that chains into node classes. No node implements it yet.
2018-03-20 00:37:05 +00:00
void (* diff) (GskRenderNode *node1,
GskRenderNode *node2,
cairo_region_t *region);
Make render node getter public Keeping these private does not really buy us anything.
2017-10-20 06:06:20 +00:00
};
gsk: Move GskRenderNode getters to internal API GskRenderNode is, at its core, a write-only API; you're supposed to set up the render nodes instead of querying them for state. Querying render nodes is left to the GskRenderer implementation.
2016-08-24 13:07:26 +00:00
Turn GskRenderNode into a derivable type Language bindings—especially ones based on introspection—cannot deal with custom type hiearchies. Luckily for us, GType has a derivable type with low overhead: GTypeInstance. By turning GskRenderNode into a GTypeInstance, and creating derived types for each class of node, we can provide an introspectable API to our non-C API consumers, with no functional change to the C API itself.
2020-04-07 22:33:54 +00:00
/*< private >
* GskRenderNodeTypeInfo:
* @node_type: the render node type in the #GskRenderNodeType enumeration
* @instance_size: the size of the render node instance
* @instance_init: (nullable): the instance initialization function
* @finalize: (nullable): the instance finalization function; must chain up to the
* implementation of the parent class
* @draw: the function called by gsk_render_node_draw()
* @can_diff: (nullable): the function called by gsk_render_node_can_diff(); if
* unset, gsk_render_node_can_diff_true() will be used
* @diff: (nullable): the function called by gsk_render_node_diff(); if unset,
* gsk_render_node_diff_impossible() will be used
*
* A struction that contains the type information for a #GskRenderNode subclass,
* to be used by gsk_render_node_type_register_static().
*/
typedef struct
{
GskRenderNodeType node_type;
gsize instance_size;
void (* instance_init) (GskRenderNode *node);
void (* finalize) (GskRenderNode *node);
void (* draw) (GskRenderNode *node,
cairo_t *cr);
gboolean (* can_diff) (const GskRenderNode *node1,
const GskRenderNode *node2);
void (* diff) (GskRenderNode *node1,
GskRenderNode *node2,
cairo_region_t *region);
} GskRenderNodeTypeInfo;
void gsk_render_node_init_types (void);
GType gsk_render_node_type_register_static (const char *node_name,
const GskRenderNodeTypeInfo *node_info);
gsk: Add cross-fade node And implement stack crossfades with it.
2016-12-17 06:44:10 +00:00
Turn GskRenderNode into a derivable type Language bindings—especially ones based on introspection—cannot deal with custom type hiearchies. Luckily for us, GType has a derivable type with low overhead: GTypeInstance. By turning GskRenderNode into a GTypeInstance, and creating derived types for each class of node, we can provide an introspectable API to our non-C API consumers, with no functional change to the C API itself.
2020-04-07 22:33:54 +00:00
gpointer gsk_render_node_alloc (GskRenderNodeType node_type);
rendernode: Add gsk_render_node_diff() ... and gsk_render_node_can_diff(). Those are vfuncs to compute a region containing all the pixels that differ between the two nodes. This is just the plumbing that chains into node classes. No node implements it yet.
2018-03-20 00:37:05 +00:00
Turn GskRenderNode into a derivable type Language bindings—especially ones based on introspection—cannot deal with custom type hiearchies. Luckily for us, GType has a derivable type with low overhead: GTypeInstance. By turning GskRenderNode into a GTypeInstance, and creating derived types for each class of node, we can provide an introspectable API to our non-C API consumers, with no functional change to the C API itself.
2020-04-07 22:33:54 +00:00
gboolean gsk_render_node_can_diff (const GskRenderNode *node1,
const GskRenderNode *node2) G_GNUC_PURE;
void gsk_render_node_diff (GskRenderNode *node1,
GskRenderNode *node2,
cairo_region_t *region);
void gsk_render_node_diff_impossible (GskRenderNode *node1,
GskRenderNode *node2,
cairo_region_t *region);
gsk: Make gsk_text_node_new_with_bounds private We pulled out the bounds calculation for performance reasons, but the caller can't know how to properly compute them. Inside gtk+, we can do that but it's not good enough for public API.
2018-04-21 09:20:15 +00:00
Initial implementation of GSK rendering pipeline 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.
2016-03-17 13:48:19 +00:00
G_END_DECLS
#endif /* __GSK_RENDER_NODE_PRIVATE_H__ */
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