CuteLogger
Fast and simple logging solution for Qt based applications
undohelper.h
1/*
2 * Copyright (c) 2015-2020 Meltytech, LLC
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef UNDOHELPER_H
19#define UNDOHELPER_H
20
21#include "models/multitrackmodel.h"
22#include <MltPlaylist.h>
23#include <QString>
24#include <QMap>
25#include <QList>
26#include <QSet>
27
28class UndoHelper
29{
30public:
31 enum OptimizationHints {
32 NoHints,
33 SkipXML,
34 RestoreTracks
35 };
36 UndoHelper(MultitrackModel &model);
37
38 void recordBeforeState();
39 void recordAfterState();
40 void undoChanges();
41 void setHints(OptimizationHints hints);
42
43private:
44 void debugPrintState();
45 void restoreAffectedTracks();
46 void fixTransitions(Mlt::Playlist playlist, int clipIndex, Mlt::Producer clip);
47
48 enum ChangeFlags {
49 NoChange = 0x0,
50 ClipInfoModified = 0x1,
51 XMLModified = 0x2,
52 Moved = 0x4,
53 Removed = 0x8
54 };
55
56 struct Info {
57 int oldTrackIndex;
58 int oldClipIndex;
59 int newTrackIndex;
60 int newClipIndex;
61 bool isBlank;
62 QString xml;
63 int frame_in;
64 int frame_out;
65 int in_delta;
66 int out_delta;
67
68 int changes;
69 Info()
70 : oldTrackIndex(-1)
71 , oldClipIndex(-1)
72 , newTrackIndex(-1)
73 , newClipIndex(-1)
74 , isBlank(false)
75 , frame_in(-1)
76 , frame_out(-1)
77 , in_delta(0)
78 , out_delta(0)
79 , changes(NoChange)
80 {}
81 };
82 QMap<QUuid, Info> m_state;
83 QList<QUuid> m_clipsAdded;
84 QList<QUuid> m_insertedOrder;
85 QSet<int> m_affectedTracks;
86 MultitrackModel &m_model;
87 OptimizationHints m_hints;
88};
89
90#endif // UNDOHELPER_H