Cara Membuat Text Editor Di Python Dengan Library PySide

Pada tutorial kali ini, saya akan membagikan contoh coding untuk membuat text editor di Python dengan library PySide.

Apa PySide itu ?
PySide adalah library Python lintas-platform yang dapat digunakan untuk membangun aplikasi GUI dengan memanfaatkan Qt Framework.
Untuk instalasi PySide, baik di Windows, Mac OS maupun Linux silakan cek di https://pypi.python.org/pypi/PySide/1.2.4#installation.
Atau jika masih belum berhasil mengintal PySide, temen-temen bisa mengikuti langkah-langkah mudah mengintal PySide berikut ini:

1. Download PySide di https://download.qt.io/official_releases/pyside/. Sesuaikan versi Sistem Operasi dan juga versi Python yang kalian gunakan.
2. Install PySide seperti mengintal aplikasi lain di OS kalian masing-masing. Misalnya kalau di windows yaitu tinggal klik dua kali file instalasinya.

Apabila PySide sudah terinstal, maka temen-temen dapat melanjutkan tutorial ini.

Oke, berikut ini adalah contoh coding untuk membuat text editor di Python dengan library PySide.

texteditor.py

# Import required modules
import sys, time
from PySide.QtGui import *
# Our main window class
class MainWindow(QMainWindow):
 # Constructor function
 def __init__(self, fileName=None):
  super(MainWindow,self).__init__()
  self.initGUI()
 def initGUI(self):
  self.setWindowTitle("Text Editor | Programmer Bojonegoro")
  self.setWindowIcon(QIcon('pb.ico'))
  self.setGeometry(100, 100, 800, 600)
  self.textEdit = QTextEdit()
  self.setCentralWidget(self.textEdit)
  self.fileName = None
  self.filters = "Text files (*.txt)"
  self.SetupComponents()
  self.show()
 # Function to setup status bar, central widget, menu bar, tool bar
 def SetupComponents(self):
  self.myStatusBar = QStatusBar()
  self.setStatusBar(self.myStatusBar)
  self.myStatusBar.showMessage('Ready', 10000)
  self.CreateActions()
  self.CreateMenus()
  self.CreateToolBar()
  self.fileMenu.addAction(self.newAction)
  self.fileMenu.addAction(self.openAction)
  self.fileMenu.addAction(self.saveAction)
  self.fileMenu.addSeparator()
  self.fileMenu.addAction(self.exitAction)
  self.editMenu.addAction(self.cutAction)
  self.editMenu.addAction(self.copyAction)
  self.editMenu.addAction(self.pasteAction)
  self.editMenu.addSeparator()
  self.editMenu.addAction(self.undoAction)
  self.editMenu.addAction(self.redoAction)
  self.editMenu.addSeparator()
  self.editMenu.addAction(self.selectAllAction)
  self.formatMenu.addAction(self.fontAction)
  self.helpMenu.addAction(self.aboutAction)
  self.helpMenu.addSeparator()
  self.helpMenu.addAction(self.aboutQtAction)
  self.mainToolBar.addAction(self.newAction)
  self.mainToolBar.addAction(self.openAction)
  self.mainToolBar.addAction(self.saveAction)
  self.mainToolBar.addSeparator()
  self.mainToolBar.addAction(self.cutAction)
  self.mainToolBar.addAction(self.copyAction)
  self.mainToolBar.addAction(self.pasteAction)
  self.mainToolBar.addSeparator()
  self.mainToolBar.addAction(self.undoAction)
  self.mainToolBar.addAction(self.redoAction)
 # Slots called when the menu actions are triggered
 def newFile(self):
  response = self.msgApp("Confirmation","Do you like to save the current file?")
  if response == "Y":
   self.saveFile()
  self.textEdit.setText('')
  self.fileName = None
 def openFile(self):
  response = self.msgApp("Confirmation","Do you like to save the current file?")
  if response == "Y":
   self.saveFile()
   self.fileName, self.filterName = QFileDialog.getOpenFileName(self)
   self.textEdit.setText(open(self.fileName).read())
 def saveFile(self):
  if self.fileName == None or self.fileName == '':
   self.fileName, self.filterName = QFileDialog.getSaveFileName(self, filter=self.filters)
  if(self.fileName != ''):
   file = open(self.fileName, 'w')
   file.write(self.textEdit.toPlainText())
   self.statusBar().showMessage("File saved", 2000)
 def exitFile(self):
  response = self.msgApp("Confirmation","This will quit the application. Do you want to Continue?")
  if response == "Y":
   myApp.quit()
  else:
   pass
 # Function to show Diaglog box with provided Title and Message
 def msgApp(self,title,msg):
  userInfo = QMessageBox.question(self,title,msg,QMessageBox.Yes | QMessageBox.No)
  if userInfo == QMessageBox.Yes:
   return "Y"
  if userInfo == QMessageBox.No:
   return "N"
  self.close()
 def fontChange(self):
  (font, ok) = QFontDialog.getFont(QFont("Helvetica [Cronyx]", 10), self)
  if ok:
   self.textEdit.setCurrentFont(font)
 def aboutHelp(self):
  QMessageBox.about(self, "About Simple Text Editor", "A Simple Text Editor where you can edit and save files")
 # Function to create actions for menus
 def CreateActions(self):
  self.newAction = QAction( QIcon('new.png'), '&New', self, shortcut=QKeySequence.New, statusTip="Create a New File", triggered=self.newFile)
  self.openAction = QAction( QIcon('open.png'), 'O&pen', self, shortcut=QKeySequence.Open, statusTip="Open an existing file", triggered=self.openFile)
  self.saveAction = QAction( QIcon('save.png'), '&Save', self, shortcut=QKeySequence.Save, statusTip="Save the current file to disk",triggered=self.saveFile)
  self.exitAction = QAction( QIcon('exit.png'), 'E&xit', self, shortcut="Ctrl+Q", statusTip="Exit the Application", triggered=self.exitFile)
  self.cutAction = QAction( QIcon('cut.png'), 'C&ut', self, shortcut=QKeySequence.Cut, statusTip="Cut the current selection to clipboard", triggered=self.textEdit.cut)
  self.copyAction = QAction( QIcon('copy.png'), 'C&opy', self, shortcut=QKeySequence.Copy, statusTip="Copy the current selection to clipboard", triggered=self.textEdit.copy)
  self.pasteAction = QAction( QIcon('paste.png'), '&Paste', self, shortcut=QKeySequence.Paste, statusTip="Paste the clipboard's content in current location", triggered=self.textEdit.paste)
  self.selectAllAction = QAction( QIcon('selectAll.png'), 'Select All', self, statusTip="Select All", triggered=self.textEdit.selectAll)
  self.redoAction = QAction( QIcon('redo.png'),'Redo', self, shortcut=QKeySequence.Redo, statusTip="Redo previous action", triggered=self.textEdit.redo)
  self.undoAction = QAction( QIcon('undo.png'),'Undo', self, shortcut=QKeySequence.Undo, statusTip="Undo previous action", triggered=self.textEdit.undo)
  self.fontAction = QAction( QIcon('font.png'),'F&ont', self, statusTip = "Modify font properties", triggered = self.fontChange)
  self.aboutAction = QAction( QIcon('about.png'), 'A&bout', self, statusTip="Displays info about text editor", triggered=self.aboutHelp)
  self.aboutQtAction = QAction(QIcon("aboutQt.png"), 'About &Qt', self, statusTip="Show the Qt library's About box", triggered=qApp.aboutQt)
 # Actual menu bar item creation
 def CreateMenus(self):
  self.fileMenu = self.menuBar().addMenu("&File")
  self.editMenu = self.menuBar().addMenu("&Edit")
  self.formatMenu = self.menuBar().addMenu("F&ormat")
  self.helpMenu = self.menuBar().addMenu("&Help")
 def CreateToolBar(self):
  self.mainToolBar = self.addToolBar('Main')
if __name__ == '__main__':
 # Exception Handling
 try:
  myApp = QApplication(sys.argv)
  mainWindow = MainWindow()
  myApp.exec_()
  sys.exit(0)
 except NameError:
  print("Name Error:", sys.exc_info()[1])
 except SystemExit:
  print("Closing Window...")
 except Exception:
  print(sys.exc_info()[1])

note: copy dan simpan code di atas dengan ekstensi nama_project.py.

Berikut output yang dihasilkan dari code di atas.

Alhamdulillah, sekian tutorial kali ini. Nantikan contoh-contoh coding lainnya pada postingan-postingan selanjutnya.

Semoga bermanfaat dan menambah wawasan temen-temen semua.

Terimakasih

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