Untitled

import os
import sys
from PyQt5.QtGui import QPixmap
from PyQt5.QtWidgets import (
	QApplication, 
	QDialog, 
	QGridLayout, 
	QGroupBox, 
	QHBoxLayout, 
	QLabel, 
	QLineEdit,
	QPushButton,
	QVBoxLayout
)

class Window(QDialog):

	def __init__(self, parent=None):
		super(Window, self).__init__(parent)

		groupBox1 = QGroupBox('Group 1')
		groupBox1.setCheckable(False)
		groupBox1.setChecked(False)

		self.imageLabel = QLabel()
		pixmap = QPixmap('test.jpg')
		self.imageLabel.setPixmap(pixmap)

		layout = QVBoxLayout()
		layout.addWidget(self.imageLabel)
		layout.addStretch(1)
		groupBox1.setLayout(layout)

		groupBox2 = QGroupBox('Group 2')
		groupBox2.setCheckable(False)
		groupBox2.setChecked(False)

		debugLabel = QLabel()
		lineEdit = QLineEdit('s3cRe7')
		lineEdit.textChanged[str].connect(self.onLineEditTextChanged)
		drawButton = QPushButton('Draw')
		drawButton.clicked.connect(self.onDrawButtonClicked)

		layout = QVBoxLayout()
		layout.addWidget(debugLabel)
		layout.addWidget(lineEdit)
		layout.addWidget(drawButton)
		layout.addStretch(1)
		groupBox2.setLayout(layout)

		main_layout = QGridLayout()
		main_layout.addWidget(groupBox1, 0, 0, 1, 2)
		main_layout.addWidget(groupBox2, 1, 0, 1, 2)
		self.setLayout(main_layout)
		self.setWindowTitle("BlackMetalPro 1.0")

	def onLineEditTextChanged(self, text):
		print(text)

	def onDrawButtonClicked(self):

		print('clicked')

		filename = 'output'

		ly_string = ''
		with open('template.ly') as f:
			for line in f.readlines():
				ly_string += line
		
		ly_string += "\n\\new TabStaff \\relative c' {\n"
		ly_string += "  a,8 a' <c e> a\n"
		ly_string += "  d,8 a' <d f> a\n"
		ly_string += "}\n"

		try:
			fname = filename + '.ly'
			f = open(fname, 'w')
			f.write(ly_string)
			f.close()
		except:
			print(f'Error while writing {fname}')
			return False
		
		
		command = f'lilypond -dbackend=eps -dno-gs-load-fonts -dinclude-eps-fonts --png {fname}'
		print(f"Executing: {command}")
		os.system(command)

		pixmap = QPixmap('output.png')
		self.imageLabel.setPixmap(pixmap)

		os.remove('output-1.eps')
		os.remove('output-systems.count')
		os.remove('output-systems.tex')
		os.remove('output-systems.texi')
		os.remove('output.png')

app = QApplication(sys.argv)

window = Window()
window.show()

sys.exit(app.exec())