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/*
* 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.
*/
/** \file
* \ingroup edarmature
*/
#include "ED_armature.h"
#include <cstring>
#include "BLI_listbase.h"
#include "MEM_guardedalloc.h"
#include "DNA_action_types.h"
#include "DNA_armature_types.h"
#include "DNA_object_types.h"
#include "BKE_action.h"
#include "BKE_armature.h"
#include "BKE_idprop.h"
/* simple struct for storing backup info for one pose channel */
typedef struct PoseChannelBackup {
struct PoseChannelBackup *next, *prev;
struct bPoseChannel *pchan; /* Pose channel this backup is for. */
struct bPoseChannel olddata; /* Backup of pose channel. */
struct IDProperty *oldprops; /* Backup copy (needs freeing) of pose channel's ID properties. */
} PoseChannelBackup;
struct PoseBackup {
bool is_bone_selection_relevant;
ListBase /* PoseChannelBackup* */ backups;
};
static PoseBackup *pose_backup_create(const Object *ob,
const bAction *action,
const bool is_bone_selection_relevant)
{
ListBase backups = {nullptr, nullptr};
const bArmature *armature = static_cast<const bArmature *>(ob->data);
/* TODO(Sybren): reuse same approach as in `armature_pose.cc` in this function, as that doesn't
* have the assumption that action group names are bone names. */
LISTBASE_FOREACH (bActionGroup *, agrp, &action->groups) {
bPoseChannel *pchan = BKE_pose_channel_find_name(ob->pose, agrp->name);
if (pchan == nullptr) {
continue;
}
if (is_bone_selection_relevant && !PBONE_SELECTED(armature, pchan->bone)) {
continue;
}
PoseChannelBackup *chan_bak = static_cast<PoseChannelBackup *>(
MEM_callocN(sizeof(*chan_bak), "PoseChannelBackup"));
chan_bak->pchan = pchan;
memcpy(&chan_bak->olddata, chan_bak->pchan, sizeof(chan_bak->olddata));
if (pchan->prop) {
chan_bak->oldprops = IDP_CopyProperty(pchan->prop);
}
BLI_addtail(&backups, chan_bak);
}
/* PoseBackup is constructed late, so that the above loop can use stack variables. */
PoseBackup *pose_backup = static_cast<PoseBackup *>(MEM_callocN(sizeof(*pose_backup), __func__));
pose_backup->is_bone_selection_relevant = is_bone_selection_relevant;
pose_backup->backups = backups;
return pose_backup;
}
PoseBackup *ED_pose_backup_create_all_bones(const Object *ob, const bAction *action)
{
return pose_backup_create(ob, action, false);
}
PoseBackup *ED_pose_backup_create_selected_bones(const Object *ob, const bAction *action)
{
/* See if bone selection is relevant. */
bool all_bones_selected = true;
bool no_bones_selected = true;
const bArmature *armature = static_cast<const bArmature *>(ob->data);
LISTBASE_FOREACH (bPoseChannel *, pchan, &ob->pose->chanbase) {
const bool is_selected = PBONE_SELECTED(armature, pchan->bone);
all_bones_selected &= is_selected;
no_bones_selected &= !is_selected;
}
/* If no bones are selected, act as if all are. */
const bool is_bone_selection_relevant = !all_bones_selected && !no_bones_selected;
return pose_backup_create(ob, action, is_bone_selection_relevant);
}
bool ED_pose_backup_is_selection_relevant(const struct PoseBackup *pose_backup)
{
return pose_backup->is_bone_selection_relevant;
}
void ED_pose_backup_restore(const PoseBackup *pbd)
{
LISTBASE_FOREACH (PoseChannelBackup *, chan_bak, &pbd->backups) {
memcpy(chan_bak->pchan, &chan_bak->olddata, sizeof(chan_bak->olddata));
if (chan_bak->oldprops) {
IDP_SyncGroupValues(chan_bak->pchan->prop, chan_bak->oldprops);
}
/* TODO: constraints settings aren't restored yet,
* even though these could change (though not that likely) */
}
}
void ED_pose_backup_free(PoseBackup *pbd)
{
LISTBASE_FOREACH_MUTABLE (PoseChannelBackup *, chan_bak, &pbd->backups) {
if (chan_bak->oldprops) {
IDP_FreeProperty(chan_bak->oldprops);
}
BLI_freelinkN(&pbd->backups, chan_bak);
}
MEM_freeN(pbd);
}
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