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
|
/*
Rosegarden
A MIDI and audio sequencer and musical notation editor.
This program is Copyright 2000-2008
Guillaume Laurent <glaurent@telegraph-road.org>,
Chris Cannam <cannam@all-day-breakfast.com>,
Richard Bown <richard.bown@ferventsoftware.com>
The moral rights of Guillaume Laurent, Chris Cannam, and Richard
Bown to claim authorship of this work have been asserted.
Other copyrights also apply to some parts of this work. Please
see the AUTHORS file and individual file headers for details.
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. See the file
COPYING included with this distribution for more information.
*/
#include "SegmentRescaleCommand.h"
#include "misc/Strings.h"
#include "base/Event.h"
#include "base/Composition.h"
#include "base/NotationTypes.h"
#include "base/Segment.h"
#include <tqstring.h>
namespace Rosegarden
{
SegmentRescaleCommand::SegmentRescaleCommand(Segment *s,
int multiplier,
int divisor) :
KNamedCommand(getGlobalName()),
m_segment(s),
m_newSegment(0),
m_startTimeGiven(false),
m_startTime(s->getStartTime()),
m_multiplier(multiplier),
m_divisor(divisor),
m_detached(false)
{
// nothing
}
SegmentRescaleCommand::SegmentRescaleCommand(Segment *s,
int multiplier,
int divisor,
timeT st) :
KNamedCommand(getGlobalName()),
m_segment(s),
m_newSegment(0),
m_startTimeGiven(true),
m_startTime(st),
m_multiplier(multiplier),
m_divisor(divisor),
m_detached(false)
{
// nothing
}
SegmentRescaleCommand::~SegmentRescaleCommand()
{
if (m_detached) {
delete m_segment;
} else {
delete m_newSegment;
}
}
timeT
SegmentRescaleCommand::rescale(timeT t)
{
// avoid overflows by using doubles
double d = t;
d *= m_multiplier;
d /= m_divisor;
d += 0.5;
return (timeT)d;
}
void
SegmentRescaleCommand::execute()
{
timeT startTime = m_segment->getStartTime();
if (m_startTimeGiven) startTime = m_startTime;
if (!m_newSegment) {
m_newSegment = new Segment();
m_newSegment->setTrack(m_segment->getTrack());
TQString oldLabel = strtoqstr(m_segment->getLabel());
if (oldLabel.endsWith(i18n("(rescaled)"))) {
m_newSegment->setLabel(m_segment->getLabel());
} else {
m_newSegment->setLabel(qstrtostr(i18n("%1 (rescaled)").arg
(oldLabel)));
}
m_newSegment->setColourIndex(m_segment->getColourIndex());
for (Segment::iterator i = m_segment->begin();
m_segment->isBeforeEndMarker(i); ++i) {
if ((*i)->isa(Note::EventRestType))
continue;
timeT dt = (*i)->getAbsoluteTime() - startTime;
timeT duration = (*i)->getDuration();
//!!! use doubles for this calculation where necessary
m_newSegment->insert
(new Event(**i,
startTime + rescale(dt),
rescale(duration)));
}
}
m_segment->getComposition()->addSegment(m_newSegment);
m_segment->getComposition()->detachSegment(m_segment);
m_newSegment->normalizeRests(m_newSegment->getStartTime(),
m_newSegment->getEndTime());
m_newSegment->setEndMarkerTime
(startTime + rescale(m_segment->getEndMarkerTime() -
m_segment->getStartTime()));
m_detached = true;
}
void
SegmentRescaleCommand::unexecute()
{
m_newSegment->getComposition()->addSegment(m_segment);
m_newSegment->getComposition()->detachSegment(m_newSegment);
m_detached = false;
}
}
|
