[pyqt5 learning] - drag and drop function (Drag&Drop), clipboard (QApplication.clipboard)

Table of contents

1. Drag&Drop function (Drag&Drop)

2. Clipboard (QApplication.clipboard)

---

1. Drag&Drop function (Drag&Drop)

'''
选择文本输入框中的文本，移动到下拉框中自动添加

步骤：
1、将文本输入框设置为可拖拽
lineEdit.setDragEnabled(True)
2、设置下拉框的两个信号属性：
0）将控件设置为接受其它地方拖拽过来的内容

self.setAcceptDrops(True)

1）拖动还没有放下时触发

def dragEnterEvent(self, event):
   print(event)
   ## 若拖拽含有文本，则接受，否则忽略
   if event.mimeData().hasText():
      event.accept()
   else:
      event.ignore()

2）拖动放下时触发
def dropEvent(self,event):
   self.addItem(event.mimeData().text())

'''

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2022/5/26 16:46
# @Author  : @linlianqin
# @Site    : 
# @File    : Drag_learn.py
# @Software: PyCharm
# @description:

'''
选择文本输入框中的文本，移动到下拉框中自动添加

步骤：
1、将文本输入框设置为可拖拽
2、设置下拉框的两个信号属性：
0）将控件设置为接受其它地方拖拽过来的内容
1）拖动还没有放下时触发
2）拖动放下时触发
'''
from PyQt5.QtWidgets import QComboBox,QWidget,QLineEdit,QFormLayout,QLabel,QApplication
import sys

class Mycombobox(QComboBox):
	def __init__(self):
		super(Mycombobox, self).__init__()
		# 0）将控件设置为接受其它地方拖拽过来的内容
		self.setAcceptDrops(True)

	# 1）拖动还没有放下时触发
	def dragEnterEvent(self, event):
		print(event)
		## 若拖拽含有文本，则接受，否则忽略
		if event.mimeData().hasText():
			event.accept()
		else:
			event.ignore()

	# 2）拖动放下时触发
	def dropEvent(self,event):
		self.addItem(event.mimeData().text())

class DragDropDemo(QWidget):
	def __init__(self):
		super(DragDropDemo, self).__init__()
		layout = QFormLayout()
		layout.addRow(QLabel("请将左边文本移动到右边下拉框中"))
		combo = Mycombobox()
		lineEdit = QLineEdit()
		layout.addRow(lineEdit,combo)

		# 1、将文本输入框设置为可拖拽
		lineEdit.setDragEnabled(True)

		self.setLayout(layout)


if __name__ == '__main__':
	app = QApplication(sys.argv)
	mainWin = DragDropDemo()
	mainWin.show()
	sys.exit(app.exec_())

 

2. Clipboard (QApplication.clipboard)

key code

# Copy the text to the clipboard 
clipboard = QApplication.clipboard() 
clipboard.setText(self.textlabel1.text())

# Get the text of the clipboard

clipboard.text()

# Copy image to clipboard

clipboard = QApplication.clipboard()
clipboard.setPixmap(QPixmap("icon.jpg"))

# Get the image on the clipboard

clipboard.pixmap()

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2022/5/26 17:00
# @Author  : @linlianqin
# @Site    : 
# @File    : ClipBoard_learn.py
# @Software: PyCharm
# @description:

'''
使用剪切板

'''
from PyQt5.QtWidgets import QComboBox,QWidget,QPushButton,QLabel,QGridLayout,QApplication
from PyQt5.QtGui import QPixmap
import sys

class ClipBoard_learn(QWidget):
	def __init__(self):
		super(ClipBoard_learn, self).__init__()

		textcopyBtn = QPushButton("复制text")
		textpasteBtn = QPushButton("粘贴text")

		imagecopyBtn = QPushButton("复制image")
		imagepasteBtn = QPushButton("粘贴image")

		self.textlabel1 = QLabel("文本")
		self.textlabel2 = QLabel()
		self.imageLabel1 = QLabel()
		self.imageLabel2 = QLabel()

		gridLayout = QGridLayout()
		gridLayout.addWidget(textcopyBtn,0,0)
		gridLayout.addWidget(textpasteBtn,0,1)
		gridLayout.addWidget(imagepasteBtn,1,1)
		gridLayout.addWidget(imagecopyBtn,1,0)
		gridLayout.addWidget(self.textlabel1,2,0)
		gridLayout.addWidget(self.textlabel2,2,1)
		gridLayout.addWidget(self.imageLabel1,3,0)
		gridLayout.addWidget(self.imageLabel2,3,1)

		self.setLayout(gridLayout)
		self.setWindowTitle("剪切板演示")

		textcopyBtn.clicked.connect(self.textcopy)
		textpasteBtn.clicked.connect(self.textpaste)
		imagecopyBtn.clicked.connect(self.imagecopy)
		imagepasteBtn.clicked.connect(self.imagepaste)

	def textcopy(self):
		clipboard = QApplication.clipboard()
		clipboard.setText(self.textlabel1.text())

	def textpaste(self):
		clipboard = QApplication.clipboard()
		self.textlabel2.setText(clipboard.text())

	def imagecopy(self):
		clipboard = QApplication.clipboard()
		clipboard.setPixmap(QPixmap("icon.jpg"))

	def imagepaste(self):
		clipboard = QApplication.clipboard()
		self.imageLabel2.setPixmap(clipboard.pixmap())


if __name__ == '__main__':
	app = QApplication(sys.argv)
	mainWin = ClipBoard_learn()
	mainWin.show()
	sys.exit(app.exec_())

 Copy and paste text demo: