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127 lines
3.8 KiB
127 lines
3.8 KiB
/*
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Rosegarden
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A MIDI and audio sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <richard.bown@ferventsoftware.com>
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The moral rights of Guillaume Laurent, Chris Cannam, and Richard
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Bown to claim authorship of this work have been asserted.
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Other copyrights also apply to some parts of this work. Please
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see the AUTHORS file and individual file headers for details.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#include "SelectionPropertyCommand.h"
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#include "base/Event.h"
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#include "base/PropertyName.h"
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#include "base/Selection.h"
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#include "document/BasicSelectionCommand.h"
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#include <tqstring.h>
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namespace Rosegarden
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{
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SelectionPropertyCommand::SelectionPropertyCommand(
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EventSelection *selection,
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const PropertyName &property,
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PropertyPattern pattern,
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int value1,
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int value2):
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BasicSelectionCommand(getGlobalName(), *selection, true),
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m_selection(selection),
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m_property(property),
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m_pattern(pattern),
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m_value1(value1),
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m_value2(value2)
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{}
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void
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SelectionPropertyCommand::modifySegment()
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{
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EventSelection::eventcontainer::iterator i =
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m_selection->getSegmentEvents().begin();
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int count = 0;
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timeT endTime = 0;
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timeT startTime = 0;
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bool haveStart = false, haveEnd = false;
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// Get start and end times
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//
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for (;i != m_selection->getSegmentEvents().end(); ++i) {
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if ((*i)->getAbsoluteTime() < startTime || !haveStart) {
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startTime = (*i)->getAbsoluteTime();
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haveStart = true;
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}
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if ((*i)->getAbsoluteTime() > endTime || !haveEnd) {
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endTime = (*i)->getAbsoluteTime();
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haveEnd = true;
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}
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}
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double step = double(m_value1 - m_value2) / double(endTime - startTime);
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double lowStep = double(m_value2) / double(endTime - startTime);
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for (i = m_selection->getSegmentEvents().begin();
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i != m_selection->getSegmentEvents().end(); ++i) {
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// flat
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if (m_pattern == FlatPattern)
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(*i)->set
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<Int>(m_property, m_value1);
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else if (m_pattern == AlternatingPattern) {
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if (count % 2 == 0)
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(*i)->set
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<Int>(m_property, m_value1);
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else
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(*i)->set
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<Int>(m_property, m_value2);
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// crescendo, decrescendo
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// (determined by step, above, which is in turn influenced by whether
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// value1 is greater than value2)
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} else if ((m_pattern == CrescendoPattern) ||
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(m_pattern == DecrescendoPattern)) {
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(*i)->set
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<Int>(m_property,
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m_value1 -
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int(step *
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((*i)->getAbsoluteTime() - startTime)));
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// ringing
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} else if (m_pattern == RingingPattern) {
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if (count % 2 == 0)
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(*i)->set
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<Int>
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(m_property,
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m_value1 - int(step *
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((*i)->getAbsoluteTime() - startTime)));
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else {
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int value = m_value2 - int(lowStep *
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((*i)->getAbsoluteTime() - startTime));
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if (value < 0)
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value = 0;
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(*i)->set
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<Int>(m_property, value);
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}
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}
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count++;
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}
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}
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}
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