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Python simple PDF viewer using PyQt5 and mozilla's pdf.js
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#!/usr/bin/env python3 | |
import sys | |
from pathlib import Path | |
from PyQt5.QtCore import * | |
from PyQt5.QtWebEngineWidgets import * | |
from PyQt5.QtWidgets import * | |
# REQUIREMENTS | |
# | |
# PyQt5 | |
# ============= | |
# pip3 install PyQt5 | |
# pip3 install PyQtWebEngine | |
# | |
# PDF.js | |
# ============ | |
# only the `web` and `build` folders are required from the the pdfjs project: | |
# git clone --depth 1 https://github.com/mozilla/pdf.js ~/js/pdfjs | |
PDFJS = f'file://{Path.home()}/js/pdfjs/web/viewer.html' | |
class QWebView(QWebEngineView): | |
def __init__(self, parent=None, url=None): | |
QWebEngineView.__init__(self) | |
self.current_url = '' | |
if url: | |
self.load(QUrl.fromUserInput(f'{PDFJS}?file={url}')) | |
self.loadFinished.connect(self._on_load_finished) | |
def _on_load_finished(self): | |
print("Url Loaded") | |
class PDFBrother(QMainWindow): | |
def __init__(self, parent=None, args=None): | |
super(PDFBrother, self).__init__(parent) | |
self.create_menu() | |
self.path = len(args) > 1 and args[1] or None | |
self.add_web_widget() | |
self.show() | |
def create_menu(self): | |
self.main_menu = self.menuBar() | |
self.main_menu_actions = {} | |
self.file_menu = self.main_menu.addMenu("File") | |
icon = self.style().standardIcon(QStyle.StandardPixmap.SP_FileDialogStart) | |
self.actionOpen = QAction(icon,"Open", self) | |
self.actionOpen.triggered.connect(self.onOpen) | |
self.file_menu.addAction(self.actionOpen) | |
def add_web_widget(self): | |
self.web_widget = QWebView(self, url=self.path) | |
self.setCentralWidget(self.web_widget) | |
def onOpen(self): | |
path = QFileDialog.getOpenFileName( | |
self, 'Select file', | |
str(Path.home()/'Books'), | |
'PDF files (*.pdf)') | |
self.web_widget.load(QUrl.fromUserInput(f'{PDFJS}?file={path[0]}')) | |
if __name__ == "__main__": | |
app = QApplication(sys.argv) | |
window = PDFBrother(args=sys.argv) | |
window.setGeometry(600, 50, 800, 600) | |
sys.exit(app.exec_()) |
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@herzkadani: nope, no need for nodejs, it works as is even via the
file://
protocol. What is needed are the actual files from the pdf.js project as explained in the description.The key line in the code is:
This implies you have the pdf.js files under your
$HOME/js/pdfjs
folder — adjust as needed.