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
23#include <MltPlaylist.h>
24#include <QList>
25#include <QMap>
26#include <QSet>
27#include <QString>
28
29class UndoHelper
30{
31public:
32 enum OptimizationHints { NoHints, SkipXML, RestoreTracks };
33 UndoHelper(MultitrackModel &model);
34
35 void recordBeforeState();
36 void recordAfterState();
37 void undoChanges();
38 void setHints(OptimizationHints hints);
39 QSet<int> affectedTracks() const { return m_affectedTracks; }
40
41private:
42 void debugPrintState(const QString &title);
43 void restoreAffectedTracks();
44 void fixTransitions(Mlt::Playlist playlist, int clipIndex, Mlt::Producer clip);
45
46 enum ChangeFlags {
47 NoChange = 0x0,
48 ClipInfoModified = 0x1,
49 XMLModified = 0x2,
50 Moved = 0x4,
51 Removed = 0x8
52 };
53
54 struct Info
55 {
56 int oldTrackIndex;
57 int oldClipIndex;
58 int newTrackIndex;
59 int newClipIndex;
60 bool isBlank;
61 QString xml;
62 int frame_in;
63 int frame_out;
64 int in_delta;
65 int out_delta;
66 int group;
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 , group(-1)
81 {}
82 };
83 QMap<QUuid, Info> m_state;
84 QList<QUuid> m_clipsAdded;
85 QList<QUuid> m_insertedOrder;
86 QSet<int> m_affectedTracks;
87 MultitrackModel &m_model;
88 OptimizationHints m_hints;
89};
90
91#endif // UNDOHELPER_H