class InstrumentTab(QWidget):
INSTRUMENT_INDEX = 0
def __init__(self):
super().__init__()
self.instrument = MusicalInstrument()
self.chord = chord()
self.initUI()
self.bindEvent()
def initUI(self):
self.layout = QVBoxLayout()
# 往上对齐
self.layout.setAlignment(Qt.AlignTop)
# 查询条件
self.hbox = QGridLayout()
self.hbox.setSpacing(1)
# 和弦/音阶选择条件区域
rootLabel = QLabel('根音')
self.rootCombo = QComboBox()
self.rootCombo.addItems(self.instrument.roots)
self.rootCombo.setMinimumWidth(100)
proLabel = QLabel('三音')
self.proCombo = QComboBox()
self.proCombo.addItems(self.instrument.pros)
self.proCombo.setMinimumWidth(100)
intervelLabel = QLabel('五音')
self.intervelCombo = QComboBox()
self.intervelCombo.addItems(self.instrument.intervals)
self.intervelCombo.setMinimumWidth(100)
self.mode = 0 # 0:scale mode ; 1:chord mode
self.scaCheck = QRadioButton('音阶')
self.scaCheck.setChecked(True)
self.chordCheck = QRadioButton('和弦')
scaleLabel = QLabel('音阶')
self.scaleCombo = QComboBox()
self.scaleCombo.addItems(self.instrument.scales)
self.scaleCombo.setMinimumWidth(100)
commonBox = QGroupBox('音阶/和弦')
commonBox.setStyleSheet(
"QGroupBox{ border: 1px groove grey; border-radius:5px;border-style: outset;}"
)
commonLayout = QGridLayout()
commonBox.setLayout(commonLayout)
commonLayout.addWidget(self.scaCheck, 0, 0)
commonLayout.addWidget(self.chordCheck, 0, 1)
commonLayout.addWidget(scaleLabel, 0, 2)
commonLayout.addWidget(self.scaleCombo, 0, 3, 1, 3)
commonLayout.addWidget(rootLabel, 1, 0)
commonLayout.addWidget(self.rootCombo, 1, 1)
commonLayout.addWidget(proLabel, 1, 2)
commonLayout.addWidget(self.proCombo, 1, 3)
commonLayout.addWidget(intervelLabel, 1, 4)
commonLayout.addWidget(self.intervelCombo, 1, 5)
# 控制条件区域
self.fretLabel = QLabel('品数')
self.guitarSlider = QDial()
self.guitarSlider.setNotchesVisible(True)
self.guitarSlider.setMaximumHeight(60)
self.guitarSlider.setToolTip('21')
self.guitarSlider.setMinimum(12)
self.guitarSlider.setMaximum(24)
self.guitarSlider.setValue(21)
# piano
self.pianoSlider = QDial()
self.pianoSlider.setNotchesVisible(True)
self.pianoSlider.setMaximumHeight(60)
self.pianoSlider.setToolTip('4')
self.pianoSlider.setMinimum(3)
self.pianoSlider.setMaximum(7)
self.pianoSlider.setValue(4)
self.pianoSlider.hide()
self.speedLabel = QLabel('播放速度')
self.speedSlider = QDial()
self.speedSlider.setNotchesVisible(True)
self.speedSlider.setMaximumHeight(60)
self.speedLabel.setToolTip('4')
self.speedSlider.setMinimum(1)
self.speedSlider.setMaximum(6)
self.speedSlider.setValue(4)
self.speed = 0.25
instLabel = QLabel('音色')
self.guitarInstCheck = QComboBox()
self.guitarInstCheck.addItems(
list(self.instrument.programs[24:31]
)) # Arachno SoundFont - Version 1.0 024~030
self.pianoInstCheck = QComboBox()
self.pianoInstCheck.addItems(
list(self.instrument.programs[:7]
)) # Arachno SoundFont - Version 1.0 0~6
self.pianoInstCheck.hide()
pos = ['-', 'C', 'A', 'G', 'E', 'D', '3-note-per-string']
self.posLabel = QLabel('把位')
self.posCombo = QComboBox()
self.posCombo.addItems(pos)
self.posCombo.setMinimumWidth(100)
controlBox = QGroupBox('控制')
controlBox.setStyleSheet(
"QGroupBox{ border: 1px groove grey; border-radius:5px;border-style: outset;}"
)
self.controlLayout = QGridLayout()
controlBox.setLayout(self.controlLayout)
self.controlLayout.addWidget(self.guitarSlider, 0, 0)
self.controlLayout.addWidget(self.fretLabel, 1, 0)
self.controlLayout.addWidget(self.speedSlider, 0, 1)
self.controlLayout.addWidget(self.speedLabel, 1, 1)
self.controlLayout.addWidget(instLabel, 0, 2)
self.controlLayout.addWidget(self.guitarInstCheck, 0, 3)
self.controlLayout.addWidget(self.posLabel, 1, 2)
self.controlLayout.addWidget(self.posCombo, 1, 3)
self.generateBtn = QPushButton('生成')
self.generateBtn.setMaximumWidth(100)
self.generateBtn.setStyleSheet(
"QPushButton{border:1px groove grey;border-radius:5px;border-style:outset; min-height:40px;}"
)
self.playBtn = QPushButton('播放')
self.playBtn.setMaximumWidth(100)
self.playBtn.setStyleSheet(
"QPushButton{border:1px groove grey;border-radius:5px;border-style:outset;min-height:40px;}"
)
self.hbox.addWidget(commonBox, 0, 0, 2, 1)
self.hbox.addWidget(controlBox, 0, 2, 2, 1)
self.hbox.addWidget(self.generateBtn, 0, 3)
self.hbox.addWidget(self.playBtn, 1, 3)
self.hbox.addWidget(QWidget(), 0, 4, 2, 1) # 占位
# 垂直布局
self.layout.addLayout(self.hbox)
self.tabBox = QTabWidget()
self.panels = InstrumentPanel(self.instrument).createInstrumentPanel(
['Guitar', 'Piano'])
for pn in self.panels:
self.tabBox.addTab(pn, pn.name)
self.switchMode()
self.layout.addWidget(self.tabBox)
self.setLayout(self.layout)
def bindEvent(self):
self.guitarSlider.valueChanged[int].connect(self.reDrawInstrument)
self.pianoSlider.valueChanged[int].connect(self.reDrawInstrument)
self.speedSlider.valueChanged[int].connect(self.switchSpeed)
self.generateBtn.clicked.connect(self.reDrawInstrument)
self.scaCheck.toggled.connect(self.switchMode)
self.chordCheck.toggled.connect(self.switchMode)
self.guitarInstCheck.currentTextChanged.connect(self.changeProgram)
self.pianoInstCheck.currentTextChanged.connect(self.changeProgram)
self.playBtn.clicked.connect(self.playSound)
self.tabBox.currentChanged.connect(self.activeInstrument)
# change the current instrument panel,show or hide the corresponding widget
def activeInstrument(self, value):
self.INSTRUMENT_INDEX = value
if self.INSTRUMENT_INDEX == 0: # GUITAR
self.pianoSlider.hide()
self.guitarSlider.show()
self.pianoInstCheck.hide()
self.guitarInstCheck.show()
self.controlLayout.replaceWidget(self.pianoSlider,
self.guitarSlider)
self.controlLayout.replaceWidget(self.pianoInstCheck,
self.guitarInstCheck)
self.posLabel.setEnabled(True)
self.posCombo.setEnabled(True)
self.fretLabel.setText('品数')
elif self.INSTRUMENT_INDEX == 1: # PIANO
self.pianoSlider.show()
self.guitarSlider.hide()
self.pianoInstCheck.show()
self.guitarInstCheck.hide()
self.controlLayout.replaceWidget(self.guitarSlider,
self.pianoSlider)
self.controlLayout.replaceWidget(self.guitarInstCheck,
self.pianoInstCheck)
self.posLabel.setEnabled(False)
self.posCombo.setEnabled(False)
self.fretLabel.setText('八度')
def reDrawInstrument(self):
notes = self.getNotes()
if self.panels[self.INSTRUMENT_INDEX].name == 'Guitar':
freStr = 'Fret num [' + str(self.guitarSlider.value()) + ']'
self.guitarSlider.setToolTip(str(self.guitarSlider.value()))
fretPosition = '\r\n[Guitar board position] POSITION ' + self.posCombo.currentText(
)
sound = self.guitarInstCheck.currentText()
if len(notes) > 1:
notes1 = []
for note in notes:
notes1.append(note.split('-')[0])
mode = self.scaleCombo.currentText() if self.mode == 0 else '-'
self.panels[self.INSTRUMENT_INDEX].initPanel(
int(self.guitarSlider.value()), notes1, mode,
self.posCombo.currentText())
elif self.panels[self.INSTRUMENT_INDEX].name == 'Piano':
freStr = 'Octave num [' + str(self.pianoSlider.value()) + ']'
self.pianoSlider.setToolTip(str(self.pianoSlider.value()))
fretPosition = ''
sound = self.pianoInstCheck.currentText()
if len(notes) > 1:
self.panels[self.INSTRUMENT_INDEX].initPanel(
int(self.pianoSlider.value()), notes)
else:
pass
infoStr = '[Instrument] ' + self.panels[self.INSTRUMENT_INDEX].name
infoStr = infoStr + '\r\n[Program] ' + sound
infoStr = infoStr + '\r\n[Scope] ' + freStr
infoStr = infoStr + '\r\n[Note mode] ' + ('scale' if self.mode == 0
else 'chord')
infoStr = infoStr + '\r\n[Key] ' + notes[0]
infoStr = infoStr + '\r\n[Notes] ' + str(notes)
infoStr = infoStr + fretPosition
infoStr = infoStr + '\r\n[Speed] ' + str(self.speed) + ' seconds'
self.panels[self.INSTRUMENT_INDEX].detail.setText(infoStr)
def switchMode(self):
self.mode = self.scaCheck.isChecked()
self.mode = self.chordCheck.isChecked()
if self.mode == 0: # scale
self.scaCheck.setChecked(True)
self.chordCheck.setChecked(False)
self.scaleCombo.setEnabled(True)
self.proCombo.setEnabled(False)
self.intervelCombo.setEnabled(False)
else: # chord
self.scaCheck.setChecked(False)
self.chordCheck.setChecked(True)
self.scaleCombo.setEnabled(False)
self.proCombo.setEnabled(True)
self.intervelCombo.setEnabled(True)
def switchSpeed(self, value):
sp = {1: 1, 2: 0.75, 3: 0.5, 4: 0.25, 5: 0.1, 6: 0.05}
self.speed = sp.get(value)
self.speedSlider.setToolTip(str(self.speed))
# change instrument's program
def changeProgram(self, value):
self.panels[self.INSTRUMENT_INDEX].changeProgram(value)
# play a note or chord
def playSound(self):
notes = self.getNotes()
if len(notes) > 1:
self.panels[self.INSTRUMENT_INDEX].playArpeggio(notes, self.speed)
# get all notes
def getNotes(self):
if self.mode == 0: # scale
notes = list(
self.chord.getScales(self.rootCombo.currentText(),
self.scaleCombo.currentText()).values())
else: # chord
notes = list(
self.chord.getChord(self.rootCombo.currentText(),
self.proCombo.currentText(),
self.intervelCombo.currentText()).values())
return notes
from PyQt5.QtWidgets import QApplication, QDial
def printValue(value):
print(value, dial.value())
app = QApplication(sys.argv)
dial = QDial()
#dial.setMinimum(-15)
#dial.setMaximum(15)
dial.setRange(-15, 15)
dial.setNotchesVisible(True)
dial.setValue(5) # Initial value
dial.valueChanged.connect(printValue)
dial.show()
# The mainloop of the application. The event handling starts from this point.
# The exec_() method has an underscore. It is because the exec is a Python keyword. And thus, exec_() was used instead.
exit_code = app.exec_()
# The sys.exit() method ensures a clean exit.
# The environment will be informed, how the application ended.
sys.exit(exit_code)