I'm pretty new to PyQt and am trying to make an application with a QPixmap on the left, which can be drawn on, and a QTextEdit on the right (for a simple OCR GUI). I looked at: PyQt5 Image and QGridlayout but I couldn't connect it with the code below (I'm losing my hair with all the head scratching!!) When I try adapting the following code, what I get is a QMainWindow with the QPixmap as the background which can be drawn on with the mouse and a second occurance of the QPixmap in it's correct position, which can not be drawn on. Can someone tell me what I'm doing wrong? Thank you very much!
# https://stackoverflow.com/questions/51475306/
import sys
from PyQt5.QtCore import Qt, QPoint
from PyQt5.QtWidgets import QMainWindow, QApplication,QGridLayout, QLabel, QWidget, QTextEdit
from PyQt5.QtGui import QPixmap, QPainter, QPen
class Menu(QMainWindow):
def __init__(self):
super().__init__()
self.drawing = False
self.lastPoint = QPoint()
self.image = QPixmap("S3.png")
self.setGeometry(100, 100, 500, 300)
self.resize(self.image.width(), self.image.height())
layout = QGridLayout()
# Add a QTextEdit box
self.edit = QTextEdit()
layout.addWidget(self.edit, 0, 0, 10, 20)
# This:
# https://stackoverflow.com/questions/52616553
# indicates that a QPixmap must be put into a label to insert into a QGridLayout
self.label = QLabel()
self.label.setPixmap(self.image)
layout.addWidget(self.label, 10, 20, 10, 20)
# https://stackoverflow.com/questions/37304684/
self.widget = QWidget()
self.widget.setLayout(layout)
self.setCentralWidget(self.widget)
self.show()
def paintEvent(self, event):
painter = QPainter(self)
painter.drawPixmap(self.rect(), self.image)
def mousePressEvent(self, event):
if event.button() == Qt.LeftButton:
self.drawing = True
self.lastPoint = event.pos()
print(self.lastPoint)
def mouseMoveEvent(self, event):
if event.buttons() and Qt.LeftButton and self.drawing:
painter = QPainter(self.image)
painter.setPen(QPen(Qt.red, 3, Qt.SolidLine))
painter.drawLine(self.lastPoint, event.pos())
print(self.lastPoint,event.pos())
self.lastPoint = event.pos()
self.update()
def mouseReleaseEvent(self, event):
if event.button == Qt.LeftButton:
self.drawing = False
if __name__ == '__main__':
app = QApplication(sys.argv)
mainMenu = Menu()
sys.exit(app.exec_())
Each widget must fulfill a specific task, so I have created a widget that only has the painted function, the main widget works as a container for the painting widget and the QTextEdit.
from PyQt5 import QtCore, QtGui, QtWidgets
class Label(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Label, self).__init__(parent)
self.image = QtGui.QPixmap("S3.png")
self.drawing = False
self.lastPoint = QtCore.QPoint()
def paintEvent(self, event):
painter = QtGui.QPainter(self)
painter.drawPixmap(QtCore.QPoint(), self.image)
def mousePressEvent(self, event):
if event.button() == QtCore.Qt.LeftButton:
self.drawing = True
self.lastPoint = event.pos()
def mouseMoveEvent(self, event):
if event.buttons() and QtCore.Qt.LeftButton and self.drawing:
painter = QtGui.QPainter(self.image)
painter.setPen(QtGui.QPen(QtCore.Qt.red, 3, QtCore.Qt.SolidLine))
painter.drawLine(self.lastPoint, event.pos())
self.lastPoint = event.pos()
self.update()
def mouseReleaseEvent(self, event):
if event.button == QtCore.Qt.LeftButton:
self.drawing = False
def sizeHint(self):
return self.image.size()
class MainWindow(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self.label = Label()
self.textedit = QtWidgets.QTextEdit()
widget = QtWidgets.QWidget()
self.setCentralWidget(widget)
lay = QtWidgets.QHBoxLayout(widget)
lay.addWidget(self.label, alignment=QtCore.Qt.AlignCenter)
lay.addWidget(self.textedit)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())