1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*
* 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 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_util.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 *C)
{
/* other poll functions must run first, this is a catch-all. */
if ((U.uiflag & USER_GLOBALUNDO) == 0) {
return false;
}
/* Allow a single memfile undo step (the first). */
UndoStack *ustack = ED_undo_stack_get();
if ((ustack->step_active != NULL) && (ED_undo_is_memfile_compatible(C) == false)) {
return false;
}
return true;
}
static bool memfile_undosys_step_encode(struct bContext *UNUSED(C),
struct Main *bmain,
UndoStep *us_p)
{
MemFileUndoStep *us = (MemFileUndoStep *)us_p;
/* Important we only use 'main' from the context (see: BKE_undosys_stack_init_from_main). */
UndoStack *ustack = ED_undo_stack_get();
/* can be NULL, use when set. */
MemFileUndoStep *us_prev = (MemFileUndoStep *)BKE_undosys_step_find_by_type(
ustack, BKE_UNDOSYS_TYPE_MEMFILE);
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, struct Main *bmain, UndoStep *us_p, int UNUSED(dir), bool UNUSED(is_final))
{
ED_editors_exit(bmain, false);
MemFileUndoStep *us = (MemFileUndoStep *)us_p;
BKE_memfile_undo_decode(us->data, C);
for (UndoStep *us_iter = us_p->next; us_iter; us_iter = us_iter->next) {
if (BKE_UNDOSYS_TYPE_IS_MEMFILE_SKIP(us_iter->type)) {
continue;
}
us_iter->is_applied = false;
}
for (UndoStep *us_iter = us_p; us_iter; us_iter = us_iter->prev) {
if (BKE_UNDOSYS_TYPE_IS_MEMFILE_SKIP(us_iter->type)) {
continue;
}
us_iter->is_applied = true;
}
/* bmain has been freed. */
bmain = CTX_data_main(C);
ED_editors_init_for_undo(bmain);
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->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;
}
/** \} */
|
