/* go back to the last occurance of name in stack */
void BKE_undo_name(bContext *C, const char *name)
{
UndoElem *uel = BLI_rfindstring(&undobase, name, offsetof(UndoElem, name));
if (uel && uel->prev) {
curundo = uel->prev;
BKE_undo_step(C, 0);
}
}
/* based on index nr it does a restore */
void BKE_undo_number(bContext *C, int nr)
{
curundo = BLI_findlink(&undobase, nr);
BKE_undo_step(C, 0);
}
/* note: also check undo_history_exec() in bottom if you change notifiers */
static int ed_undo_step(bContext *C, int step, const char *undoname)
{
wmWindowManager *wm = CTX_wm_manager(C);
wmWindow *win = CTX_wm_window(C);
Scene *scene = CTX_data_scene(C);
Object *obedit = CTX_data_edit_object(C);
Object *obact = CTX_data_active_object(C);
ScrArea *sa = CTX_wm_area(C);
/* undo during jobs are running can easily lead to freeing data using by jobs,
* or they can just lead to freezing job in some other cases */
if (WM_jobs_test(wm, scene, WM_JOB_TYPE_ANY)) {
return OPERATOR_CANCELLED;
}
/* grease pencil can be can be used in plenty of spaces, so check it first */
if (ED_gpencil_session_active()) {
return ED_undo_gpencil_step(C, step, undoname);
}
if (sa && (sa->spacetype == SPACE_IMAGE)) {
SpaceImage *sima = (SpaceImage *)sa->spacedata.first;
if ((obact && (obact->mode & OB_MODE_TEXTURE_PAINT)) || (sima->mode == SI_MODE_PAINT)) {
if (!ED_undo_paint_step(C, UNDO_PAINT_IMAGE, step, undoname) && undoname) {
if (U.uiflag & USER_GLOBALUNDO) {
ED_viewport_render_kill_jobs(C, true);
BKE_undo_name(C, undoname);
}
}
WM_event_add_notifier(C, NC_WINDOW, NULL);
return OPERATOR_FINISHED;
}
}
if (sa && (sa->spacetype == SPACE_TEXT)) {
ED_text_undo_step(C, step);
}
else if (obedit) {
if (OB_TYPE_SUPPORT_EDITMODE(obedit->type)) {
if (undoname)
undo_editmode_name(C, undoname);
else
undo_editmode_step(C, step);
WM_event_add_notifier(C, NC_GEOM | ND_DATA, NULL);
}
}
else {
/* Note: we used to do a fall-through here where if the
* mode-specific undo system had no more steps to undo (or
* redo), the global undo would run.
*
* That was inconsistent with editmode, and also makes for
* unecessarily tricky interaction with the other undo
* systems. */
if (obact && obact->mode & OB_MODE_TEXTURE_PAINT) {
ED_undo_paint_step(C, UNDO_PAINT_IMAGE, step, undoname);
}
else if (obact && obact->mode & OB_MODE_SCULPT) {
ED_undo_paint_step(C, UNDO_PAINT_MESH, step, undoname);
}
else if (obact && obact->mode & OB_MODE_PARTICLE_EDIT) {
if (step == 1)
PE_undo(scene);
else
PE_redo(scene);
}
else if (U.uiflag & USER_GLOBALUNDO) {
// note python defines not valid here anymore.
//#ifdef WITH_PYTHON
// XXX BPY_scripts_clear_pyobjects();
//#endif
/* for global undo/redo we should just clear the editmode stack */
/* for example, texface stores image pointers */
undo_editmode_clear();
ED_viewport_render_kill_jobs(C, true);
if (undoname)
BKE_undo_name(C, undoname);
else
BKE_undo_step(C, step);
scene = CTX_data_scene(C);
WM_event_add_notifier(C, NC_SCENE | ND_LAYER_CONTENT, scene);
}
}
WM_event_add_notifier(C, NC_WINDOW, NULL);
if (win) {
win->addmousemove = true;
}
return OPERATOR_FINISHED;
}
