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//=========================================================
// MusE
// Linux Music Editor
// $Id: mittranspose.cpp,v 1.2.2.1 2009/05/03 04:14:00 terminator356 Exp $
//
// (C) Copyright 2001 Werner Schweer (ws@seh.de)
//=========================================================
#include <QCloseEvent>
#include <QTimer>
#include "mittranspose.h"
#include "song.h"
#include "mpevent.h"
#include "pitchedit.h"
#include "xml.h"
#include "globals.h"
MITPluginTranspose* mitPluginTranspose;
//---------------------------------------------------------
// MITPluginTranspose
//---------------------------------------------------------
MITPluginTranspose::MITPluginTranspose(QWidget* parent, Qt::WFlags fl)
: QWidget(parent, fl)
{
setupUi(this);
on = false;
transpose = 0;
trigger = 24;
transposeChangedFlag = false;
triggerKeySpinBox->setValue(trigger);
onToggled(false);
connect(onCheckBox, SIGNAL(toggled(bool)), SLOT(onToggled(bool)));
connect(triggerKeySpinBox, SIGNAL(valueChanged(int)),
SLOT(triggerKeyChanged(int)));
connect(heartBeatTimer, SIGNAL(timeout()), SLOT(noteReceived()));
}
//---------------------------------------------------------
// closeEvent
//---------------------------------------------------------
void MITPluginTranspose::closeEvent(QCloseEvent* ev)
{
emit hideWindow();
QWidget::closeEvent(ev);
}
//---------------------------------------------------------
// noteReceived
//---------------------------------------------------------
void MITPluginTranspose::noteReceived()
{
if (transposeChangedFlag)
{
// Added by Tim. p3.3.6
//printf("MITPluginTranspose::noteReceived\n");
transposeChanged();
}
}
//---------------------------------------------------------
// triggerKeyChanged
//---------------------------------------------------------
void MITPluginTranspose::triggerKeyChanged(int val)
{
trigger = val;
}
//---------------------------------------------------------
// transposeChanged
//---------------------------------------------------------
void MITPluginTranspose::transposeChanged()
{
QString s;
s.sprintf("%c%d", transpose >= 0 ? '-' : ' ', transpose);
transposeLabel->setText(s);
transposeChangedFlag = false;
}
//---------------------------------------------------------
// onToggled
//---------------------------------------------------------
void MITPluginTranspose::onToggled(bool f)
{
on = f;
if (!on) {
transpose = 0;
transposeChanged();
keyOnList.clear();
}
transposeLabel->setEnabled(on);
triggerKeySpinBox->setEnabled(on);
}
//---------------------------------------------------------
// process
//---------------------------------------------------------
void MITPluginTranspose::process(MEvent& ev)
{
if (!on || (ev.type() != 0x90))
return;
int pitch = ev.dataA();
if (pitch >= trigger && pitch < (trigger+12)) {
// process control keys
int diff = transpose - (pitch-trigger);
transpose -= diff;
transposeChangedFlag = true;
return;
}
if (ev.dataB() == 0) {
// Note Off
for (iKeyOn i = keyOnList.begin(); i != keyOnList.end(); ++i) {
if (i->pitch == pitch && i->channel == ev.channel()
&& i->port == ev.port()) {
pitch += i->transpose;
keyOnList.erase(i);
break;
}
}
}
else {
// Note On
keyOnList.push_back(KeyOn(pitch, ev.channel(), ev.port(), transpose));
pitch += transpose;
}
ev.setA(pitch);
}
//---------------------------------------------------------
// readStatus
//---------------------------------------------------------
void MITPluginTranspose::readStatus(Xml& xml)
{
for (;;) {
Xml::Token token = xml.parse();
const QString& tag = xml.s1();
switch (token) {
case Xml::Error:
case Xml::End:
return;
case Xml::Text:
if (tag == "on")
on = xml.parseInt();
else if (tag == "trigger")
trigger = xml.parseInt();
else
xml.unknown("TransposePlugin");
break;
case Xml::TagEnd:
if (xml.s1() == "mplugin")
return;
default:
break;
}
}
}
//---------------------------------------------------------
// writeStatus
//---------------------------------------------------------
void MITPluginTranspose::writeStatus(int level, Xml& xml) const
{
xml.intTag(level, "on", on);
xml.intTag(level, "trigger", trigger);
}
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