transcription for the code found in the video "PyQt5 Creating Paint Application In 40 Minutes" https://www.youtube.com/watch?v=qEgyGyVA1ZQ

gistfile1.txt

# transcription for the code found in the video "PyQt5 Creating Paint Application In 40 Minutes" https://www.youtube.com/watch?v=qEgyGyVA1ZQ
from PyQt5.QtWidgets import QApplication, QMainWindow, QMenuBar, QMenu, QAction, QFileDialog
from PyQt5.QtGui import QIcon, QImage, QPainter, QPen
from PyQt5.QtCore import Qt, QPoint
import sys


class Window (QMainWindow) :
	def __init__(self):
		super().__init__()
		top = 400
		left = 400
		width = 800
		height = 600
		icon = "icons/pain.png"
		self.setWindowTitle ("Paint Application")
		self.setGeometry(top, left, width, height)
		self.setWindowIcon(QIcon (icon))
		self.image = QImage (self.size(), QImage.Format_RGB32)
		self.image.fill(Qt.white)
		self.drawing = False
		self.brushSize = 2
		self.brushColor = Qt.black
		self.lastPoint = QPoint ()
		mainMenu = self.menuBar ()
		fileMenu = mainMenu.addMenu("File")
		brushMenu = mainMenu.addMenu ("Brush Size")
		brushColor = mainMenu.addMenu ("Brush Color")
		saveAction = QAction (QIcon ("icons/save.png"), "Save", self)
		saveAction.setShortcut ("Ctrl+S")
		fileMenu.addAction (saveAction)
		saveAction.triggered.connect (self.save)

		clearAction = QAction (QIcon ("icons/clear.png"), "Clear", self)
		clearAction.setShortcut ("Ctrl+C")
		fileMenu.addAction (clearAction)
		clearAction.triggered.connect (self.clear)

		threepxAction = QAction (QIcon ("icons/threepx.png"), "3px", self)
		threepxAction.setShortcut ("Ctrl+T")
		brushMenu.addAction (threepxAction)
		threepxAction.triggered.connect (self.threePx)

		fivepxAction = QAction (QIcon ("icons/fivepx.png"), "5px", self)
		fivepxAction.setShortcut ("Ctrl+F")
		brushMenu.addAction (fivepxAction)
		fivepxAction.triggered.connect (self. fivePx)

		sevenpxAction = QAction (QIcon ("icons/sevenpx.png"), "7px", self)
		sevenpxAction.setShortcut ("Ctrl+S")
		brushMenu.addAction (sevenpxAction)
		sevenpxAction.triggered.connect (self.sevenPx)

		ninepxAction = QAction (QIcon ("icons/ninepx.png"), "9px", self)
		ninepxAction.setShortcut ("Ctrl+N")
		brushMenu.addAction (ninepxAction)
		ninepxAction.triggered.connect (self.ninePx)

		blackAction = QAction (QIcon ("icons/black.png"), "Black", self)
		blackAction.setShortcut ("Ctrl+B")
		brushColor.addAction (blackAction)
		blackAction.triggered.connect (self.blackColor)

		redAction = QAction (QIcon ("icons/red.png"), "Red", self)
		redAction.setShortcut ("Ctrl+W")
		brushColor.addAction (redAction)
		redAction. triggered.connect (self.redColor)

		greenAction = QAction (QIcon ("icons/green.png"), "Green", self)
		greenAction.setShortcut ("Ctrl+G")
		brushColor.addAction (greenAction)
		greenAction.triggered.connect (self.greenkColor)

		yellowAction = QAction (QIcon ("icons/yellow.png"), "Yellow", self)
		yellowAction.setShortcut ("Ctrl+G")
		brushColor.addAction (yellowAction)
		yellowAction.triggered.connect (self.yellowColor)

	def mousePressEvent (self, event):
		if event.button () == Qt.LeftButton:
			self.drawing = True
			self.lastPoint = event.pos ()

	def mouseMoveEvent(self, event):
		if (event.buttons () & Qt.LeftButton) & self.drawing:
			painter = QPainter (self.image)
			painter.setPen(QPen(self.brushColor, self.brushSize, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
			painter.drawLine(self.lastPoint, event.pos())
			self.lastPoint = event.pos ()
			self.update()

	def mouseReleaseEvent (self, event):
		if event.button == Qt.LeftButton:
			self.drawing = False

	def paintEvent (self, event):
		canvasPainter = QPainter (self)
		canvasPainter.drawImage (self.rect (), self.image, self.image.rect ( ) )

	def save (self):
		filePath, _= QFileDialog.getSaveFileName (self, "Save Image", "", "PNG(*.png);;JPEG(*.jpg *.jpeg);; ALL Files(*.*)")
		if filePath == "":
			return
		self.image.save (filePath)

	def clear (self):
		self.image.fill(Qt.white)
		self.update()

	def threePx (self):
		self.brushSize = 3

	def fivePx (self):
		self.brushSize = 5

	def sevenPx (self):
		self.brushSize = 7

	def ninePx (self):
		self.brushSize = 9

	def blackColor (self):
		self.brushColor = Qt.black

	def redColor (self):
		self.brushColor = Qt.red

	def greenkColor (self):
		self.brushColor = Qt.green

	def yellowColor(self):
		self.brushColor = Qt.yellow

if __name__ == "__main__":
	app = QApplication(sys.argv)
	window = Window()
	window.show()
	app.exec()