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Differential D2917 Diff 9638 source/blender/windowmanager/message_bus/wm_message_bus.h

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source/blender/windowmanager/message_bus/wm_message_bus.h

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/windowmanager/wm_message_bus.h
* \ingroup wm
*/
#ifndef __WM_MESSAGE_BUS_H__
#define __WM_MESSAGE_BUS_H__
struct GSet;
struct ID;
struct bContext;
struct wmMsg;
/* opaque (don't expose outside wm_message_bus.c) */
struct wmMsgBus;
struct wmMsgSubscribeKey;
struct wmMsgSubscribeValue;
struct wmMsgSubscribeValueLink;
typedef void (*wmMsgNotifyFn)(
struct bContext *C, struct wmMsgSubscribeKey *msg_key, struct wmMsgSubscribeValue *msg_val);
typedef void (*wmMsgSubscribeValueFreeDataFn)(
struct wmMsgSubscribeKey *msg_key, struct wmMsgSubscribeValue *msg_val);
/* Exactly what arguments here is not obvious. */
typedef void (*wmMsgSubscribeValueUpdateIdFn)(
struct bContext *C,
struct wmMsgBus *mbus,
struct ID *id_src, struct ID *id_dst,
struct wmMsgSubscribeValue *msg_val);
enum {
WM_MSG_TYPE_RNA = 0,
WM_MSG_TYPE_STATIC = 1,
};
#define WM_MSG_TYPE_NUM 2
typedef struct wmMsgTypeInfo {
struct {
unsigned int (*hash_fn)(const void *msg);
bool (*cmp_fn)(const void *a, const void *b);
void (*key_free_fn)(void *key);
} gset;
void (*update_by_id)(struct wmMsgBus *mbus, struct ID *id_src, struct ID *id_dst);
void (*remove_by_id)(struct wmMsgBus *mbus, const struct ID *id);
void (*repr)(FILE *stream, const struct wmMsgSubscribeKey *msg_key);
/* sizeof(wmMsgSubscribeKey_*) */
uint msg_key_size;
} wmMsgTypeInfo;
typedef struct wmMsg {
unsigned int type;
// #ifdef DEBUG
/* For debugging: '__func__:__LINE__'. */
const char *id;
// #endif
} wmMsg;
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That’s rather double linked list imho? Or did you mean 'simple linked list'? ;)

mont29: That’s rather double linked list imho? Or did you mean 'simple linked list'? ;)
typedef struct wmMsgSubscribeKey {
/** Linked list for predicable ordering, otherwise we would depend on ghash bucketing. */
struct wmMsgSubscribeKey *next, *prev;
ListBase values;
/* over-alloc, eg: wmMsgSubscribeKey_RNA */
wmMsg msg[0];
} wmMsgSubscribeKey;
/** One of many in #wmMsgSubscribeKey.values */
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That’s rather double linked list imho? Or did you mean 'simple linked list'? ;)

mont29: That’s rather double linked list imho? Or did you mean 'simple linked list'? ;)
typedef struct wmMsgSubscribeValue {
struct wmMsgSubscribe *next, *prev;
/** Handle, used to iterate and clear. */
void *owner;
/** User data, can be whatever we like, free using the 'free_data' callback if it's owned. */
void *user_data;
/** Callbacks */
wmMsgNotifyFn notify;
wmMsgSubscribeValueUpdateIdFn update_id;
wmMsgSubscribeValueFreeDataFn free_data;
/** Keep this subscriber if possible. */
uint is_persistent : 1;
mont29Unsubmitted
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That’s rather double linked list imho? Or did you mean 'simple linked list'? ;)

mont29: That’s rather double linked list imho? Or did you mean 'simple linked list'? ;)
/* tag to run when handling events,
* we may want option for immediate execution. */
uint tag : 1;
} wmMsgSubscribeValue;
/** One of many in #wmMsgSubscribeKey.values */
typedef struct wmMsgSubscribeValueLink {
struct wmMsgSubscribeValueLink *next, *prev;
wmMsgSubscribeValue params;
} wmMsgSubscribeValueLink;
void WM_msgbus_types_init(void);
struct wmMsgBus *WM_msgbus_create(void);
void WM_msgbus_destroy(struct wmMsgBus *mbus);
void WM_msgbus_clear_by_owner(struct wmMsgBus *mbus, void *owner);
void WM_msg_dump(struct wmMsgBus *mbus, const char *info);
void WM_msgbus_handle(struct wmMsgBus *mbus, struct bContext *C);
void WM_msg_publish_with_key(struct wmMsgBus *mbus, wmMsgSubscribeKey *msg_key);
wmMsgSubscribeKey *WM_msg_subscribe_with_key(
struct wmMsgBus *mbus,
const wmMsgSubscribeKey *msg_key_test,
const wmMsgSubscribeValue *msg_val_params);
void WM_msg_id_update(
struct wmMsgBus *mbus,
struct ID *id_src, struct ID *id_dst);
void WM_msg_id_remove(struct wmMsgBus *mbus, const struct ID *id);
/* -------------------------------------------------------------------------- */
/* wm_message_bus_static.c */
enum {
/* generic window redraw */
WM_MSG_STATICTYPE_WINDOW_DRAW = 0,
WM_MSG_STATICTYPE_SCREEN_EDIT = 1,
WM_MSG_STATICTYPE_FILE_READ = 2,
};
typedef struct wmMsgParams_Static {
int event;
} wmMsgParams_Static;
typedef struct wmMsg_Static {
wmMsg head; /* keep first */
wmMsgParams_Static params;
} wmMsg_Static;
typedef struct wmMsgSubscribeKey_Static {
wmMsgSubscribeKey head;
wmMsg_Static msg;
} wmMsgSubscribeKey_Static;
void WM_msgtypeinfo_init_static(wmMsgTypeInfo *msg_type);
wmMsgSubscribeKey_Static *WM_msg_lookup_static(
struct wmMsgBus *mbus, const wmMsgParams_Static *msg_key_params);
void WM_msg_publish_static_params(
struct wmMsgBus *mbus,
const wmMsgParams_Static *msg_key_params);
void WM_msg_publish_static(
struct wmMsgBus *mbus,
/* wmMsgParams_Static (expanded) */
int event);
void WM_msg_subscribe_static_params(
struct wmMsgBus *mbus,
const wmMsgParams_Static *msg_key_params,
const wmMsgSubscribeValue *msg_val_params,
const char *id_repr);
void WM_msg_subscribe_static(
struct wmMsgBus *mbus,
int event,
const wmMsgSubscribeValue *msg_val_params,
const char *id_repr);
/* -------------------------------------------------------------------------- */
/* wm_message_bus_rna.c */
typedef struct wmMsgParams_RNA {
/** when #PointerRNA.data & id.data are NULL. match against all. */
PointerRNA ptr;
/** when NULL, match against any property. */
const PropertyRNA *prop;
/**
* Optional RNA data path for persistent RNA properties, ignore if NULL.
* otherwise it's allocated.
*/
char *data_path;
} wmMsgParams_RNA;
typedef struct wmMsg_RNA {
wmMsg head; /* keep first */
wmMsgParams_RNA params;
} wmMsg_RNA;
typedef struct wmMsgSubscribeKey_RNA {
wmMsgSubscribeKey head;
wmMsg_RNA msg;
} wmMsgSubscribeKey_RNA;
void WM_msgtypeinfo_init_rna(wmMsgTypeInfo *msg_type);
wmMsgSubscribeKey_RNA *WM_msg_lookup_rna(
struct wmMsgBus *mbus, const wmMsgParams_RNA *msg_key_params);
void WM_msg_publish_rna_params(
struct wmMsgBus *mbus, const wmMsgParams_RNA *msg_key_params);
void WM_msg_publish_rna(
struct wmMsgBus *mbus,
/* wmMsgParams_RNA (expanded) */
PointerRNA *ptr, PropertyRNA *prop);
void WM_msg_subscribe_rna_params(
struct wmMsgBus *mbus,
const wmMsgParams_RNA *msg_key_params,
const wmMsgSubscribeValue *msg_val_params,
const char *id_repr);
void WM_msg_subscribe_rna(
struct wmMsgBus *mbus,
PointerRNA *ptr, const PropertyRNA *prop,
const wmMsgSubscribeValue *msg_val_params,
const char *id_repr);
/* ID variants */
void WM_msg_subscribe_ID(
struct wmMsgBus *mbus, struct ID *id, const wmMsgSubscribeValue *msg_val_params,
const char *id_repr);
void WM_msg_publish_ID(
struct wmMsgBus *mbus, struct ID *id);
/* Anonymous variants (for convenience) */
#define WM_msg_subscribe_rna_anon_type(mbus, type_, value) { \
WM_msg_subscribe_rna_params( \
mbus, \
&(const wmMsgParams_RNA){ \
.ptr = (PointerRNA){.type = &RNA_##type_}, \
.prop = NULL, \
}, \
value, __func__); \
} ((void)0)
#define WM_msg_subscribe_rna_anon_prop(mbus, type_, prop_, value) { \
extern PropertyRNA rna_##type_##_##prop_; \
WM_msg_subscribe_rna_params( \
mbus, \
&(const wmMsgParams_RNA){ \
.ptr = (PointerRNA){.type = &RNA_##type_}, \
.prop = &rna_##type_##_##prop_, \
}, \
value, __func__); \
} ((void)0)
#endif /* __WM_MESSAGE_BUS_H__ */