打印预览

README.md

@@ -46,8 +46,10 @@ https://pyqt5.com 社区是专门针对PyQt5学习和提升开设的博客网站
     - [删除自定义Item](QListWidget/DeleteCustomItem.py)
     - [自定义可拖拽Item](QListWidget/DragDrop.py)
     - [腾讯视频热播列表](QListWidget/HotPlaylist.py)
+    - [在item中添加图标](Test/partner_625781186/13.combo_listwidget)
   - [QTreeWidget](QTreeWidget)
     - [通过json数据生成树形结构](QTreeWidget/ParsingJson.py)
+    - [拖拽显示为图片](Test/partner_625781186/12.1拖拽显示为图片)
   - [QTableWidget](QTableWidget)
     - [Sqlalchemy动态拼接字段查询显示表格](QTableWidget/SqlQuery.py)
 
@@ -110,6 +112,8 @@ https://pyqt5.com 社区是专门针对PyQt5学习和提升开设的博客网站
     - [获取Cookie](QWebView/GetCookie.py)
   - [QWebEngineView](QWebEngineView)
     - [获取Cookie](QWebEngineView/GetCookie.py)
+    - [浏览器下载文件](Test/partner_625781186/6.QWebEngineView下载文件)
+    - [打印网页](Test/partner_625781186/17_打印预览qwebengineview)
 
 - [QThread](QThread)
   - [继承QThread](QThread/InheritQThread.py)
@@ -132,12 +136,14 @@ https://pyqt5.com 社区是专门针对PyQt5学习和提升开设的博客网站
   - [右键菜单动画](QPropertyAnimation/MenuAnimation.py)
   - [点阵特效](QPropertyAnimation/RlatticeEffect.py)
   - [页面切换/图片轮播动画](QPropertyAnimation/PageSwitching.py)
+  - [折叠动画](Test/partner_625781186/2.折叠控件)
 
 - Others
   - [QFont](QFont)
     - [加载自定义字体](QFont/AwesomeFont.py)
   - [QMenu](QMenu)
     - [菜单设置多选并且不关闭](QMenu/MultiSelect.py)
+    - [悬停菜单](Test/partner_625781186/5.hoverMenu)
   - [QAxWidget](QAxWidget)
     - [显示Word、Excel、PDF文件](QAxWidget/ViewOffice.py)
   - [QSplitter](QSplitter)

Test/partner_625781186/17_打印预览qwebengineview/README.md

@@ -0,0 +1,6 @@
+### 17 QWebEngineView + QPrintPreviewDialog 
+
+Preview QWebEngineView.page() in QPrintPreviewDialog and print them authentically . 
+
+
+![1](ScreenShot/1.jpg)

Test/partner_625781186/17_打印预览qwebengineview/main.py

@@ -0,0 +1,97 @@
+
+"""  QWebEngineView in QPrintPreviewDialog"""
+"""
+Created on 2019-01-17 <br>
+description: 摘抄自 eric6 和 https://github.com/pandel/opsiPackageBuilder/blob/c0e660ecc8d4ec8fb8dc242d2174490c5dc67930/oPB/gui/utilities.py <br>
+author: 625781186@qq.com <br>
+site: https://github.com/625781186 <br>
+更多经典例子:https://github.com/892768447/PyQt <br>
+课件: https://github.com/625781186/WoHowLearn_PyQt5 <br>
+视频教程: https://space.bilibili.com/1863103/#/ <br>
+"""
+from PyQt5 import QtGui, QtWidgets, QtCore
+from PyQt5.QtCore import *
+from PyQt5.QtGui import *
+from PyQt5.QtWidgets import *
+from PyQt5.QtPrintSupport import *
+from PyQt5.QtWebEngineWidgets import *
+import sys
+
+
+class HtmlView(QWebEngineView):
+    """Subclass QWebView and connect to a QPrintPreviewDialog object"""
+
+    def __init__(self, url="", parent=None, ):
+        """
+        Constructor of HtmlView
+        :param parent: parent of the view
+        :param url: url to load, if set, a loadFInished signal is emitted
+        """
+        super().__init__(parent)
+
+        self.html = ""
+        self.setUrl(QUrl(url))
+
+        self.preview = QPrintPreviewDialog()
+
+        self.textedit = QTextEdit()
+
+        self.preview.paintRequested.connect(self.printPreview)
+
+        if url != "":
+            self.loadFinished.connect(self.execpreview)
+
+    def execpreview(self, arg):
+        self.preview.exec()
+
+    # -------------法一------------- ↓
+    ## 通过将Html 写到textedit , 再将textedit渲染到printpreviewdialog
+    # def execpreview(self, arg):
+    #     self.page().toHtml(self.setHtml_)
+    #     self.preview.exec()
+    #
+    # def printPreview(self, printer):
+    #
+    #     self.textedit.print(printer)
+    #
+    # def setHtml_(self, html):
+    #
+    #     self.textedit.setHtml(html)
+    #
+    #     # small workaround to find the QPrintPreviewWidget inside the pre-defined dialog and force it to update its content
+    #     wdg = self.preview.findChild(QPrintPreviewWidget)
+    #     if wdg is not None:
+    #         wdg.updatePreview()
+    # -------------法一------------- ↑
+
+    def printPreview(self, printer):
+        # 打印机颜色
+        printer.setColorMode(QPrinter.GrayScale)
+        # 起始页?
+        printer.setPageOrder(QPrinter.FirstPageFirst)
+        # 页边距
+        printer.setPageMargins(
+            1.0 * 10, 1.0 * 10, 1.0 * 10, 1.0 * 10,
+            QPrinter.Millimeter
+        )
+        # 文档名
+        # printer.setPrinterName("打印机里显示的文档名")
+        # 设置DPI
+        printer.setResolution(150)
+        # ----------------------------------------------
+        ## !需要开启事件循环 , 否则无法渲染到 printpreviewdialog
+        loop = QEventLoop()
+        QTimer.singleShot(10000, loop.quit)
+
+        self.page().print(printer,
+                          lambda *a: loop.quit() if loop and loop.isRunning() else None)
+
+        loop.exec_()
+
+
+if __name__ == "__main__":
+    app = QtWidgets.QApplication(sys.argv)
+    main_window = HtmlView(url="file:///报警记录2019-04-12 16-52-53.html")
+
+    main_window.show()
+    app.exec_()