107 lines
4 KiB
Python
107 lines
4 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2020/6/3
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@author: Irony
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@site: https://pyqt.site , https://github.com/PyQt5
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@email: 892768447@qq.com
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@file: DynamicRes
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@description:
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"""
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from threading import Thread
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import requests
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try:
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from PyQt5.QtCore import QUrl, QByteArray
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from PyQt5.QtGui import QImage, QTextDocument
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from PyQt5.QtWidgets import QApplication, QTextBrowser, QWidget, QVBoxLayout, QPushButton
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except ImportError:
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from PySide2.QtCore import QUrl, QByteArray
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from PySide2.QtGui import QImage, QTextDocument
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from PySide2.QtWidgets import QApplication, QTextBrowser, QWidget, QVBoxLayout, QPushButton
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class TextBrowser(QTextBrowser):
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NetImages = {}
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def __init__(self, *args, **kwargs):
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super(TextBrowser, self).__init__(*args, **kwargs)
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self.setOpenLinks(False) # 禁止打开URL
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def downloadImage(self, url):
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try:
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self.NetImages[url] = [QByteArray(requests.get(url.toString()).content), 1]
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print('下载完成', url)
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except Exception as e:
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print('下载失败', url, e)
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self.NetImages[url] = [QByteArray(), 1]
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def loadResource(self, rtype, url):
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ret = super(TextBrowser, self).loadResource(rtype, url)
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# 加载图片资源
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if rtype == QTextDocument.ImageResource:
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if ret:
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return ret
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if url.toString().startswith('irony'): # 自定义的协议头
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print('加载本地', '../Donate/zhifubao.png', url)
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return QImage(
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'../Donate/zhifubao.png') # 或者 QByteArray(open('../Donate/zhifubao.png', 'rb').read())
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elif url.toString().startswith('http'): # 加载网络图片
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img, status = self.NetImages.get(url, [None, None])
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if url not in self.NetImages or status is None:
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# 子线程下载
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self.NetImages[url] = [None, 1]
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print('download ', url)
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Thread(target=self.downloadImage, args=(url,), daemon=True).start()
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elif img:
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return img
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return ret
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def mouseDoubleClickEvent(self, event):
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# 双击图片得到图片的URL，也可以用来放大显示
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super(TextBrowser, self).mouseDoubleClickEvent(event)
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url = self.anchorAt(event.pos())
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if url:
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print('url:', url, self.document().resource(QTextDocument.ImageResource, QUrl(url)))
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class Window(QWidget):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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layout = QVBoxLayout(self)
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self.textBrowser = TextBrowser(self)
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self.downButton = QPushButton('加载网络图片', self)
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layout.addWidget(self.textBrowser)
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layout.addWidget(self.downButton)
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# 加载本地图片
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img = QImage('../Donate/weixin.png')
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# 第二个参数为任意唯一的url类似于qrc方式
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self.textBrowser.document().addResource(QTextDocument.ImageResource,
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QUrl('dynamic:/images/weixin.png'), img)
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# 设置html
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# 需要注意里面的图片地址
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self.textBrowser.setHtml(
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'<p><a href="../Donate/weixin.png"><img src="../Donate/weixin.png"></a></p>' # 方式一直接加载本地图片
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'<p><a href="dynamic:/images/weixin.png"><img src="dynamic:/images/weixin.png"></a></p>' # 方式二通过addResource添加资源
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'<p><a href="irony://zhifubao.png"><img src="irony://zhifubao.png"></a></p>' # 方式三定义自定义的协议头通过loadResource动态加载
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'<p><a href="https://blog.pyqt.site/img/avatar.png"><img ' # 方式四类似方式三，只不过需要从网络中下载
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'src="https://blog.pyqt.site/img/avatar.png"></a></p>')
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if __name__ == '__main__':
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import sys
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import cgitb
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cgitb.enable(format='text')
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app = QApplication(sys.argv)
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w = Window()
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w.show()
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sys.exit(app.exec_())
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