PyQt5实现让QScrollArea支持鼠标拖动的操作方法

如下所示：#!/usr/bin/evnpython3#-*-coding:utf-8-*-importsysfromPyQt5.QtWidgetsimport(QApplication,QWidget,QScrollAr

如下所示：

#!/usr/bin/evn python3
# -*- coding: utf-8 -*-
 
import sys
from PyQt5.QtWidgets import (QApplication, QWidget, QScrollArea, QLabel)
from PyQt5.QtCore import QEvent
 
 
class TestWindow(QWidget):
	def __init__(self):
 super(TestWindow, self).__init__()
 self.resize(800, 600)
 self.move(0, 0)
 # self.setMouseTracking(False)
 self.last_time_move = 0
 self.initUI()
 
	def initUI(self):
 self.central_widget = QWidget(self)
 
 self.scroll_area = QScrollArea(self)
 self.scroll_area.setGeometry(0, 0, 400, 400)
 self.scroll_area.setWidgetResizable(True)
 self.scroll_bar = self.scroll_area.verticalScrollBar()
 
 self.scroll_contents = QWidget()
 self.scroll_contents.setGeometry(0, 0, 400, 800)
 self.scroll_contents.setMinimumSize(380, 1000)
 
 self.label_1 = QLabel(self.scroll_contents)
 self.label_1.move(50, 100)
 self.label_1.setText("HelloRyan")
 
 self.label_2 = QLabel(self.scroll_contents)
 self.label_2.move(50, 200)
 self.label_2.setText("你好")
 
 self.label_3 = QLabel(self.scroll_contents)
 self.label_3.move(50, 300)
 self.label_3.setText("-----------")
 
 self.label_4 = QLabel(self.scroll_contents)
 self.label_4.move(50, 400)
 self.label_4.setText("542543255235432543252")
 
 self.label_5 = QLabel(self.scroll_contents)
 self.label_5.move(50, 500)
 self.label_5.setText("5432543262542")
 
 self.label_6 = QLabel(self.scroll_contents)
 self.label_6.move(50, 600)
 self.label_6.setText("4325432532")
 
 self.scroll_area.setWidget(self.scroll_contents)
 self.scroll_area.installEventFilter(self)
 
	# def mouseMoveEvent(self, event):
	# if event.pos().x() > 0 and event.pos().x() < 400 and event.pos().y() > 0 and event.pos().y() < 400:
	# if self.last_time_move == 0:
	# self.last_time_move = event.pos().y()
	#
	# distance = self.last_time_move - event.pos().y()
	# self.scroll_bar.setValue(self.scroll_bar.value() + distance)
	#
	# self.last_time_move = event.pos().y()
	# print("move%d" % event.pos().y())
	#
	# def mouseReleaseEvent(self, event):
	# self.last_time_move = 0
	# print("up")
 
	def eventFilter(self, source, event):
 if event.type() == QEvent.MouseMove:
 print(event.pos().y())
 
 if self.last_time_move == 0:
 self.last_time_move = event.pos().y()
 
 distance = self.last_time_move - event.pos().y()
 self.scroll_bar.setValue(self.scroll_bar.value() + distance)
 self.last_time_move = event.pos().y()
 
 elif event.type() == QEvent.MouseButtonRelease:
 self.last_time_move = 0
 return QWidget.eventFilter(self, source, event)
 
 
if __name__ == "__main__":
	app = QApplication(sys.argv)
	test = TestWindow()
	test.show()
	sys.exit(app.exec_())

以上这篇PyQt5实现让QScrollArea支持鼠标拖动的操作方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持脚本之家。