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/*
* Copyright (c) 2018 Alexandre Ratchov <alex@caoua.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef MIDISH_UNDO_H
#define MIDISH_UNDO_H
#include "track.h"
#include "sysex.h"
struct songtrk;
struct songchan;
struct songfilt;
struct songsx;
enum {
UNDO_EMPTY,
UNDO_STR,
UNDO_UINT,
UNDO_TRACK,
UNDO_TDEL,
UNDO_TNEW,
UNDO_FILT,
UNDO_FDEL,
UNDO_FNEW,
UNDO_CDEL,
UNDO_CNEW,
UNDO_XADD,
UNDO_XRM,
UNDO_XDEL,
UNDO_XNEW,
UNDO_SCALE
};
struct undo {
struct undo *next;
int type;
char *func;
char *name;
unsigned size;
union {
struct undo_setstr {
char **ptr, *val;
} ren;
struct undo_setuint {
unsigned int *ptr, val;
} uint;
struct undo_track {
struct track *track;
struct track_data data;
} track;
struct undo_tdel {
struct songtrk *trk;
struct track_data data;
} tdel;
struct undo_filt {
struct filt *filt;
struct filt data;
} filt;
struct undo_fdel {
struct songfilt *filt;
struct undo_fdel_trk {
struct undo_fdel_trk *next;
struct songtrk *trk;
} *trks;
} fdel;
struct undo_cdel {
struct songchan *chan;
struct track_data data;
} cdel;
struct undo_sysex {
struct sysexlist *list;
struct sysex_data data;
} sysex;
struct undo_xdel {
struct songsx *sx;
} xdel;
struct undo_scale {
unsigned int oldunit, newunit;
} scale;
} u;
};
void undo_pop(struct song *);
void undo_push(struct song *, struct undo *);
void undo_clear(struct song *, struct undo **);
void undo_start(struct song *, char *, char *);
void undo_setstr(struct song *, char *, char **, char *);
void undo_setuint(struct song *, char *, char *, unsigned int *, unsigned int);
void undo_scale(struct song *, char *, char *, unsigned int, unsigned int);
void undo_track_save(struct song *, struct track *, char *, char *);
void undo_track_diff(struct song *);
void undo_tdel_do(struct song *, struct songtrk *, char *);
struct songtrk *undo_tnew_do(struct song *, char *, char *);
void undo_filt_save(struct song *, struct filt *, char *, char *);
void undo_fdel_do(struct song *, struct songfilt *, char *);
struct songfilt *undo_fnew_do(struct song *, char *, char *);
struct songchan *undo_cnew_do(struct song *, unsigned int, unsigned int, int,
char *, char *);
void undo_cdel_do(struct song *, struct songchan *, char *);
void undo_xadd_do(struct song *, char *, struct songsx *, struct sysex *);
void undo_xrm_do(struct song *, char *, struct songsx *, unsigned int);
void undo_xdel_do(struct song *, char *, struct songsx *);
struct songsx *undo_xnew_do(struct song *, char *, char *);
#endif /* MIDISH_UNDO_H */
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