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#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys,time
from PyQt4 import QtGui, QtCore
class ScriptClass(QtGui.QWidget):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
self.setWindowTitle('Constant length')
title = QtGui.QLabel('Make all events of length:')
self.titleEdit = QtGui.QComboBox()
self.titleEdit.addItem('1/1',1)
self.titleEdit.addItem('1/2',2)
self.titleEdit.addItem('1/4',4)
self.titleEdit.addItem('1/8',8)
self.titleEdit.addItem('1/16',16)
self.titleEdit.addItem('1/32',32)
self.titleEdit.addItem('1/64',64)
self.titleEdit.setCurrentIndex(4)
button = QtGui.QPushButton("Execute")
self.connect(button, QtCore.SIGNAL('clicked()'), self.execute)
grid = QtGui.QGridLayout()
grid.setSpacing(3)
grid.addWidget(title, 1, 0)
grid.addWidget(self.titleEdit, 1, 1)
grid.addWidget(button, 2, 1)
self.setLayout(grid)
self.resize(200, 100)
button.setFocus()
def execute(self):
testFile = file(sys.argv[1],"r")
inputEvents = testFile.readlines()
testFile.close()
beatDiv = self.titleEdit.itemData(self.titleEdit.currentIndex()).toInt()[0]
print "beatDiv=",beatDiv
eventLen=0
#get beat length to calculate minimum length of event
for line in inputEvents:
if line.startswith('BEATLEN'):
tag,tick = line.split(' ')
eventLen=int(tick)/beatDiv*4
break
outputEvents=[]
#loop through events
for line in inputEvents:
if line.startswith('NOTE'):
tag,tick,note,length,velocity = line.split(' ')
length=eventLen
newLine=tag+" "+tick+" "+note+" "+str(length)+" "+velocity
outputEvents.append(newLine)
else:
outputEvents.append(line)
testFile = file(sys.argv[1],"w")
testFile.writelines(outputEvents)
testFile.close()
quit()
app = QtGui.QApplication(sys.argv)
qb = ScriptClass()
qb.show()
sys.exit(app.exec_())
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