diff options
author | Campbell Barton <ideasman42@gmail.com> | 2018-04-02 16:02:08 +0300 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2018-04-02 16:07:40 +0300 |
commit | 4ffa05c30b10eb8a07dd0a9b43466f6d11bc1364 (patch) | |
tree | 0a9bfbbcd5d49bcaeb0ae0c9f42ccfdbfd107356 /source/blender/editors/undo/memfile_undo.c | |
parent | b186592b211ef91c20cc771ed743ee21a09223be (diff) |
Cleanup: move undo into it's own directory
Split out undo API from ED_util.h into ED_undo.h
Diffstat (limited to 'source/blender/editors/undo/memfile_undo.c')
-rw-r--r-- | source/blender/editors/undo/memfile_undo.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/source/blender/editors/undo/memfile_undo.c b/source/blender/editors/undo/memfile_undo.c new file mode 100644 index 00000000000..c336069bff8 --- /dev/null +++ b/source/blender/editors/undo/memfile_undo.c @@ -0,0 +1,149 @@ +/* + * ***** 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 edundo + * + * Wrapper between 'ED_undo.h' and 'BKE_undo_system.h' API's. + */ + +#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_undo.h" +#include "ED_render.h" + + +#include "../blenloader/BLO_undofile.h" + +#include "undo_intern.h" + +/* -------------------------------------------------------------------- */ +/** \name Implements ED Undo System + * \{ */ + +typedef struct MemFileUndoStep { + UndoStep step; + MemFileUndoData *data; +} 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; + 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)); +} + +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); +} + +/* 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; +} + + +/** \} */ |