#!/usr/bin/env python # -*- coding: utf-8 -*- """ Created on 2020/6/3 @author: Irony @site: https://pyqt.site https://github.com/PyQt5 @email: 892768447@qq.com @file: DynamicRes @description: """ from threading import Thread import requests from PyQt5.QtCore import QUrl, QByteArray from PyQt5.QtGui import QImage, QTextDocument from PyQt5.QtWidgets import QTextBrowser, QWidget, QVBoxLayout, QPushButton __Author__ = 'Irony' __Copyright__ = 'Copyright (c) 2020' __Version__ = 'Version 1.0' class TextBrowser(QTextBrowser): NetImages = {} def __init__(self, *args, **kwargs): super(TextBrowser, self).__init__(*args, **kwargs) self.setOpenLinks(False) # 禁止打开URL def downloadImage(self, url): try: self.NetImages[url] = [QByteArray(requests.get(url.toString()).content), 1] print('下载完成', url) except Exception as e: print('下载失败', url, e) self.NetImages[url] = [QByteArray(), 1] def loadResource(self, rtype, url): ret = super(TextBrowser, self).loadResource(rtype, url) # 加载图片资源 if rtype == QTextDocument.ImageResource: if ret: return ret if url.toString().startswith('irony'): # 自定义的协议头 print('加载本地', '../Donate/zhifubao.png', url) return QImage('../Donate/zhifubao.png') # 或者 QByteArray(open('../Donate/zhifubao.png', 'rb').read()) elif url.toString().startswith('http'): # 加载网络图片 img, status = self.NetImages.get(url, [None, None]) if url not in self.NetImages or status is None: # 子线程下载 self.NetImages[url] = [None, 1] print('download ', url) Thread(target=self.downloadImage, args=(url,), daemon=True).start() elif img: return img return ret def mouseDoubleClickEvent(self, event): # 双击图片得到图片的URL,也可以用来放大显示 super(TextBrowser, self).mouseDoubleClickEvent(event) url = self.anchorAt(event.pos()) if url: print('url:', url, self.document().resource(QTextDocument.ImageResource, QUrl(url))) class Window(QWidget): def __init__(self, *args, **kwargs): super(Window, self).__init__(*args, **kwargs) layout = QVBoxLayout(self) self.textBrowser = TextBrowser(self) self.downButton = QPushButton('加载网络图片', self) layout.addWidget(self.textBrowser) layout.addWidget(self.downButton) # 加载本地图片 img = QImage('../Donate/weixin.png') # 第二个参数为任意唯一的url类似于qrc方式 self.textBrowser.document().addResource(QTextDocument.ImageResource, QUrl('dynamic:/images/weixin.png'), img) # 设置html # 需要注意里面的图片地址 self.textBrowser.setHtml( '
' # 方式一直接加载本地图片 '' # 方式二通过addResource添加资源 '' # 方式三定义自定义的协议头通过loadResource动态加载 '') if __name__ == '__main__': import sys import cgitb cgitb.enable(1, None, 5, '') from PyQt5.QtWidgets import QApplication app = QApplication(sys.argv) w = Window() w.show() sys.exit(app.exec_())