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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/editors/util/memfile_undo.c
* \ingroup edutil
*
* Wrapper between 'BKE_undo.h' and 'BKE_undo_system.h'
*/
#include "BLI_utildefines.h"
#include "BLI_sys_types.h"
#include "DNA_object_enums.h"
#include "BKE_blender_undo.h"
#include "BKE_context.h"
#include "BKE_undo_system.h"
#include "WM_api.h"
#include "WM_types.h"
#include "ED_object.h"
#include "ED_util.h"
#include "ED_render.h"
#include "../blenloader/BLO_undofile.h"
#include "util_intern.h"
/** Store workspace modes in undo steps, this may be removed if find a better way to handle. */
#define USE_WORKSPACE_OBJECT_MODE_HACK
#ifdef USE_WORKSPACE_OBJECT_MODE_HACK
#include "MEM_guardedalloc.h"
#include "BLI_string.h"
#include "BLI_listbase.h"
#include "BKE_main.h"
#include "DNA_workspace_types.h"
#endif
/* -------------------------------------------------------------------- */
/** \name Implements ED Undo System
* \{ */
#ifdef USE_WORKSPACE_OBJECT_MODE_HACK
typedef struct WorkSpaceData {
struct WorkSpaceData *next, *prev;
char name[MAX_ID_NAME - 2];
eObjectMode object_mode, object_mode_restore;
/* TODO, view_layer? */
} WorkSpaceData;
#endif /* USE_WORKSPACE_OBJECT_MODE_HACK */
typedef struct MemFileUndoStep {
UndoStep step;
MemFileUndoData *data;
#ifdef USE_WORKSPACE_OBJECT_MODE_HACK
ListBase workspace_data;
#endif
} MemFileUndoStep;
static bool memfile_undosys_poll(bContext *UNUSED(C))
{
/* other poll functions must run first, this is a catch-all. */
if ((U.uiflag & USER_GLOBALUNDO) == 0) {
return false;
}
return true;
}
static bool memfile_undosys_step_encode(struct bContext *C, UndoStep *us_p)
{
MemFileUndoStep *us = (MemFileUndoStep *)us_p;
/* Important we only use 'main' from the context (see: BKE_undosys_stack_init_from_main). */
struct Main *bmain = CTX_data_main(C);
/* can be NULL, use when set. */
MemFileUndoStep *us_prev = (MemFileUndoStep *)BKE_undosys_step_same_type_prev(us_p);
us->data = BKE_memfile_undo_encode(bmain, us_prev ? us_prev->data : NULL);
us->step.data_size = us->data->undo_size;
#ifdef USE_WORKSPACE_OBJECT_MODE_HACK
{
for (WorkSpace *workspace = bmain->workspaces.first; workspace != NULL; workspace = workspace->id.next) {
WorkSpaceData *wsd = MEM_mallocN(sizeof(*wsd), __func__);
BLI_strncpy(wsd->name, workspace->id.name + 2, sizeof(wsd->name));
wsd->object_mode = workspace->object_mode;
wsd->object_mode_restore = workspace->object_mode_restore;
BLI_addtail(&us->workspace_data, wsd);
}
}
#endif
return true;
}
static void memfile_undosys_step_decode(struct bContext *C, UndoStep *us_p, int UNUSED(dir))
{
/* Loading the content will correctly switch into compatible non-object modes. */
ED_object_mode_set(C, OB_MODE_OBJECT);
/* This is needed so undoing/redoing doesn't crash with threaded previews going */
ED_viewport_render_kill_jobs(CTX_wm_manager(C), CTX_data_main(C), true);
MemFileUndoStep *us = (MemFileUndoStep *)us_p;
BKE_memfile_undo_decode(us->data, C);
WM_event_add_notifier(C, NC_SCENE | ND_LAYER_CONTENT, CTX_data_scene(C));
#ifdef USE_WORKSPACE_OBJECT_MODE_HACK
{
struct Main *bmain = CTX_data_main(C);
for (WorkSpaceData *wsd = us->workspace_data.first; wsd != NULL; wsd = wsd->next) {
WorkSpace *workspace = BLI_findstring(&bmain->workspaces, wsd->name, offsetof(ID, name));
if (workspace) {
workspace->object_mode = wsd->object_mode;
workspace->object_mode_restore = wsd->object_mode_restore;
}
}
}
#endif
}
static void memfile_undosys_step_free(UndoStep *us_p)
{
/* To avoid unnecessary slow down, free backwards (so we don't need to merge when clearing all). */
MemFileUndoStep *us = (MemFileUndoStep *)us_p;
if (us_p->next != NULL) {
UndoStep *us_next_p = BKE_undosys_step_same_type_next(us_p);
if (us_next_p != NULL) {
MemFileUndoStep *us_next = (MemFileUndoStep *)us_next_p;
BLO_memfile_merge(&us->data->memfile, &us_next->data->memfile);
}
}
BKE_memfile_undo_free(us->data);
#ifdef USE_WORKSPACE_OBJECT_MODE_HACK
BLI_freelistN(&us->workspace_data);
#endif
}
/* Export for ED_undo_sys. */
void ED_memfile_undosys_type(UndoType *ut)
{
ut->name = "Global Undo";
ut->poll = memfile_undosys_poll;
ut->step_encode = memfile_undosys_step_encode;
ut->step_decode = memfile_undosys_step_decode;
ut->step_free = memfile_undosys_step_free;
ut->mode = BKE_UNDOTYPE_MODE_STORE;
ut->use_context = true;
ut->step_size = sizeof(MemFileUndoStep);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Utilities
* \{ */
/**
* Ideally we wouldn't need to export global undo internals, there are some cases where it's needed though.
*/
static struct MemFile *ed_undosys_step_get_memfile(UndoStep *us_p)
{
MemFileUndoStep *us = (MemFileUndoStep *)us_p;
return &us->data->memfile;
}
struct MemFile *ED_undosys_stack_memfile_get_active(UndoStack *ustack)
{
UndoStep *us = BKE_undosys_stack_active_with_type(ustack, BKE_UNDOSYS_TYPE_MEMFILE);
if (us) {
return ed_undosys_step_get_memfile(us);
}
return NULL;
}
/** \} */
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