141 lines
4.5 KiB
C
141 lines
4.5 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup bke
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*/
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct Depsgraph;
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struct ID;
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struct Main;
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struct PointerRNA;
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/**
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Callbacks for One Off Actions
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* =============================
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*
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* - `{ACTION}` use in cases where only a single callback is required,
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* `VERSION_UPDATE` and `RENDER_STATS` for example.
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*
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* \note avoid single callbacks if there is a chance `PRE/POST` are useful to differentiate
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* since renaming callbacks may break Python scripts.
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*
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* Callbacks for Common Actions
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* ============================
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*
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* - `{ACTION}_PRE` run before the action.
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* - `{ACTION}_POST` run after the action.
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*
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* Optional Additional Callbacks
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* -----------------------------
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*
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* - `{ACTION}_INIT` when the handler may manipulate the context used to run the action.
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*
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* Examples where `INIT` functions may be useful are:
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*
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* - When rendering, an `INIT` function may change the camera or render settings,
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* things which a `PRE` function can't support as this information has already been used.
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* - When saving an `INIT` function could temporarily change the preferences.
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*
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* - `{ACTION}_POST_FAIL` should be included if the action may fail.
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*
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* Use this so a call to the `PRE` callback always has a matching call to `POST` or `POST_FAIL`.
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*
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* \note in most cases only `PRE/POST` are required.
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*
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* Callbacks for Background/Modal Tasks
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* ====================================
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*
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* - `{ACTION}_INIT`
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* - `{ACTION}_COMPLETE` when a background job has finished.
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* - `{ACTION}_CANCEL` When a background job is canceled partway through.
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*
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* While cancellation may be caused by any number of reasons, common causes may include:
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*
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* - Explicit user cancellation.
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* - Exiting Blender.
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* - Failure to acquire resources (such as disk-full, out of memory ... etc).
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*
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* \note `PRE/POST` handlers may be used along side modal task handlers
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* as is the case for rendering, where rendering an animation uses modal task handlers,
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* rendering a single frame has `PRE/POST` handlers.
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*
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* Python Access
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* =============
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*
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* All callbacks here must be exposed via the Python module `bpy.app.handlers`,
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* see `bpy_app_handlers.c`.
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*/
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typedef enum {
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BKE_CB_EVT_FRAME_CHANGE_PRE,
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BKE_CB_EVT_FRAME_CHANGE_POST,
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BKE_CB_EVT_RENDER_PRE,
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BKE_CB_EVT_RENDER_POST,
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BKE_CB_EVT_RENDER_WRITE,
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BKE_CB_EVT_RENDER_STATS,
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BKE_CB_EVT_RENDER_INIT,
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BKE_CB_EVT_RENDER_COMPLETE,
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BKE_CB_EVT_RENDER_CANCEL,
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BKE_CB_EVT_LOAD_PRE,
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BKE_CB_EVT_LOAD_POST,
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BKE_CB_EVT_SAVE_PRE,
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BKE_CB_EVT_SAVE_POST,
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BKE_CB_EVT_UNDO_PRE,
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BKE_CB_EVT_UNDO_POST,
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BKE_CB_EVT_REDO_PRE,
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BKE_CB_EVT_REDO_POST,
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BKE_CB_EVT_DEPSGRAPH_UPDATE_PRE,
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BKE_CB_EVT_DEPSGRAPH_UPDATE_POST,
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BKE_CB_EVT_VERSION_UPDATE,
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BKE_CB_EVT_LOAD_FACTORY_USERDEF_POST,
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BKE_CB_EVT_LOAD_FACTORY_STARTUP_POST,
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BKE_CB_EVT_XR_SESSION_START_PRE,
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BKE_CB_EVT_TOT,
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} eCbEvent;
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typedef struct bCallbackFuncStore {
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struct bCallbackFuncStore *next, *prev;
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void (*func)(struct Main *, struct PointerRNA **, const int num_pointers, void *arg);
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void *arg;
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short alloc;
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} bCallbackFuncStore;
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void BKE_callback_exec(struct Main *bmain,
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struct PointerRNA **pointers,
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const int num_pointers,
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eCbEvent evt);
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void BKE_callback_exec_null(struct Main *bmain, eCbEvent evt);
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void BKE_callback_exec_id(struct Main *bmain, struct ID *id, eCbEvent evt);
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void BKE_callback_exec_id_depsgraph(struct Main *bmain,
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struct ID *id,
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struct Depsgraph *depsgraph,
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eCbEvent evt);
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void BKE_callback_add(bCallbackFuncStore *funcstore, eCbEvent evt);
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void BKE_callback_remove(bCallbackFuncStore *funcstore, eCbEvent evt);
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void BKE_callback_global_init(void);
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void BKE_callback_global_finalize(void);
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#ifdef __cplusplus
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}
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#endif
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