From 12e02fd4746308746e2f9e316a3b5e8bcd5f2896 Mon Sep 17 00:00:00 2001 From: Campbell Barton Date: Fri, 24 Jun 2011 16:54:30 +0000 Subject: own patch [#27752] Python Callback (Scriptlink functionality) Python: * adds bpy.app.handlers which contains lists, each for an event type: render_pre, render_post, load_pre, load_post, save_pre, save_post * each list item needs to be a callable object which takes 1 argument (the ID). * callbacks are cleared on file load. Example: def MyFunc(scene): print("Callback:", data) bpy.app.handlers.render_post.append(MyFunc) C: * This patch adds a generic C callback api which is currently only used by python. * Unlike python callbacks these are not cleared on file load. --- source/blender/blenlib/BLI_callbacks.h | 38 ++++++++++++++--- source/blender/blenlib/CMakeLists.txt | 1 + source/blender/blenlib/intern/callbacks.c | 70 +++++++++++++++++++++++++++++++ 3 files changed, 104 insertions(+), 5 deletions(-) create mode 100644 source/blender/blenlib/intern/callbacks.c (limited to 'source/blender/blenlib') diff --git a/source/blender/blenlib/BLI_callbacks.h b/source/blender/blenlib/BLI_callbacks.h index 9f6ac0c391f..89e4230825d 100644 --- a/source/blender/blenlib/BLI_callbacks.h +++ b/source/blender/blenlib/BLI_callbacks.h @@ -1,8 +1,6 @@ /* * $Id: * - * These callbacks are needed in the lib - * * ***** BEGIN GPL LICENSE BLOCK ***** * * This program is free software; you can redistribute it and/or @@ -29,7 +27,7 @@ * ***** END GPL LICENSE BLOCK ***** */ -/** \file blender/blenlib/intern/BLI_callbacks.h +/** \file blender/blenlib/BLI_callbacks.h * \ingroup bli */ @@ -37,8 +35,38 @@ #ifndef BLI_CALLBACKS_H #define BLI_CALLBACKS_H -// This is blenlib internal only -void callLocalErrorCallBack(const char* msg); +struct bContext; +struct Main; +struct ID; + +typedef enum { + BLI_CB_EVT_RENDER_PRE, + BLI_CB_EVT_RENDER_POST, + BLI_CB_EVT_LOAD_PRE, + BLI_CB_EVT_LOAD_POST, + BLI_CB_EVT_SAVE_PRE, + BLI_CB_EVT_SAVE_POST, + BLI_CB_EVT_TOT +} eCbEvent; + + +typedef struct { + struct bCallbackFuncStore *next, *prev; + void (* func)(struct Main *, struct ID *, void *arg); + void *arg; + short alloc; +} bCallbackFuncStore; + + +void BLI_exec_cb(struct Main *main, struct ID *self, eCbEvent evt); +void BLI_add_cb(bCallbackFuncStore *funcstore, eCbEvent evt); #endif + +void BLI_cb_init(void); +void BLI_cb_finalize(void); + + +/* This is blenlib internal only, unrelated to above */ +void callLocalErrorCallBack(const char* msg); diff --git a/source/blender/blenlib/CMakeLists.txt b/source/blender/blenlib/CMakeLists.txt index 8964d02199f..2e05ac7892b 100644 --- a/source/blender/blenlib/CMakeLists.txt +++ b/source/blender/blenlib/CMakeLists.txt @@ -52,6 +52,7 @@ set(SRC intern/DLRB_tree.c intern/boxpack2d.c intern/bpath.c + intern/callbacks.c intern/cpu.c intern/dynlib.c intern/edgehash.c diff --git a/source/blender/blenlib/intern/callbacks.c b/source/blender/blenlib/intern/callbacks.c new file mode 100644 index 00000000000..0c778dcd3fa --- /dev/null +++ b/source/blender/blenlib/intern/callbacks.c @@ -0,0 +1,70 @@ +/* + * $Id: + * + * ***** 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. + * + * Contributor(s): Blender Foundation (2011) + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#include "BLI_utildefines.h" +#include "BLI_listbase.h" +#include "BLI_callbacks.h" + +#include "MEM_guardedalloc.h" + +static ListBase callback_slots[BLI_CB_EVT_TOT]= {{0}}; + +void BLI_exec_cb(struct Main *main, struct ID *self, eCbEvent evt) +{ + ListBase *lb= &callback_slots[evt]; + bCallbackFuncStore *funcstore; + + for(funcstore= (bCallbackFuncStore *)lb->first; funcstore; funcstore= (bCallbackFuncStore *)funcstore->next) { + funcstore->func(main, self, funcstore->arg); + } +} + +void BLI_add_cb(bCallbackFuncStore *funcstore, eCbEvent evt) +{ + ListBase *lb= &callback_slots[evt]; + BLI_addtail(lb, funcstore); +} + +void BLI_cb_init(void) +{ + /* do nothing */ +} + +/* call on application exit */ +void BLI_cb_finalize(void) +{ + eCbEvent evt; + for(evt= 0; evt < BLI_CB_EVT_TOT; evt++) { + ListBase *lb= &callback_slots[evt]; + bCallbackFuncStore *funcstore; + bCallbackFuncStore *funcstore_next; + for(funcstore= (bCallbackFuncStore *)lb->first; funcstore; funcstore= funcstore_next) { + funcstore_next= (bCallbackFuncStore *)funcstore->next; + BLI_remlink(lb, funcstore); + if(funcstore->alloc) { + MEM_freeN(funcstore); + } + } + } +} -- cgit v1.2.3