/
workshop.py
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/
workshop.py
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from PyQt5.QtCore import Qt, QSize, QUrl
from PyQt5.QtWidgets import (
QAction, QApplication, QDialog, QDialogButtonBox, QFileDialog, QLabel,
QLineEdit, QMainWindow, QStatusBar, QTabWidget, QToolBar, QVBoxLayout)
from PyQt5.QtGui import QIcon, QPixmap
from PyQt5.QtWebEngineWidgets import QWebEngineView
import os
import sys
HERE = os.path.dirname(os.path.realpath(__file__))
IMAGES = os.path.join(HERE, 'images')
class AboutDialog(QDialog):
def __init__(self, *args, **kwargs):
super(AboutDialog, self).__init__(*args, **kwargs)
QBtn = QDialogButtonBox.Ok # No cancel
self.buttonBox = QDialogButtonBox(QBtn)
self.buttonBox.accepted.connect(self.accept)
self.buttonBox.rejected.connect(self.reject)
layout = QVBoxLayout()
title = QLabel("Mozarella Ashbadger")
font = title.font()
font.setPointSize(20)
title.setFont(font)
layout.addWidget(title)
logo = QLabel()
logo.setPixmap(QPixmap(os.path.join(IMAGES, 'ma-icon-128.png')))
layout.addWidget(logo)
layout.addWidget(QLabel("Version 23.35.211.233232"))
layout.addWidget(QLabel("Copyright 2015 Mozarella Inc."))
for i in range(0, layout.count()):
layout.itemAt(i).setAlignment(Qt.AlignHCenter)
layout.addWidget(self.buttonBox)
self.setLayout(layout)
class MainWindow(QMainWindow):
def __init__(self, *args, **kwargs):
super(MainWindow, self).__init__(*args, **kwargs)
self.tabs = QTabWidget()
self.tabs.setDocumentMode(True)
self.tabs.tabBarDoubleClicked.connect(self.tab_open_doubleclick)
self.tabs.currentChanged.connect(self.current_tab_changed)
self.tabs.setTabsClosable(True)
self.tabs.tabCloseRequested.connect(self.close_current_tab)
self.setCentralWidget(self.tabs)
self.status = QStatusBar()
self.setStatusBar(self.status)
navtb = QToolBar("Navigation")
navtb.setIconSize(QSize(16, 16))
self.addToolBar(navtb)
back_btn = QAction(QIcon(os.path.join(IMAGES, 'arrow-180.png')), "Back", self)
back_btn.setStatusTip("Back to previous page")
back_btn.triggered.connect(lambda: self.tabs.currentWidget().back())
navtb.addAction(back_btn)
next_btn = QAction(QIcon(os.path.join(IMAGES, 'arrow-000.png')), "Forward", self)
next_btn.setStatusTip("Forward to next page")
next_btn.triggered.connect(lambda: self.tabs.currentWidget().forward())
navtb.addAction(next_btn)
reload_btn = QAction(QIcon(os.path.join(IMAGES, 'arrow-circle-315.png')), "Reload", self)
reload_btn.setStatusTip("Reload page")
reload_btn.triggered.connect(lambda: self.tabs.currentWidget().reload())
navtb.addAction(reload_btn)
home_btn = QAction(QIcon(os.path.join(IMAGES, 'home.png')), "Home", self)
home_btn.setStatusTip("Go home")
home_btn.triggered.connect(self.navigate_home)
navtb.addAction(home_btn)
navtb.addSeparator()
self.httpsicon = QLabel() # Yes, really!
self.httpsicon.setPixmap(QPixmap(os.path.join(IMAGES, 'lock-nossl.png')))
navtb.addWidget(self.httpsicon)
self.urlbar = QLineEdit()
self.urlbar.returnPressed.connect(self.navigate_to_url)
navtb.addWidget(self.urlbar)
stop_btn = QAction(QIcon(os.path.join(IMAGES, 'cross-circle.png')), "Stop", self)
stop_btn.setStatusTip("Stop loading current page")
stop_btn.triggered.connect(lambda: self.tabs.currentWidget().stop())
navtb.addAction(stop_btn)
# Uncomment to disable native menubar on Mac
# self.menuBar().setNativeMenuBar(False)
file_menu = self.menuBar().addMenu("&File")
new_tab_action = QAction(QIcon(os.path.join(IMAGES, 'ui-tab--plus.png')), "New Tab", self)
new_tab_action.setShortcut("Alt+T")
new_tab_action.setStatusTip("Open a new tab")
new_tab_action.triggered.connect(lambda _: self.add_new_tab(QUrl('http://www.google.com'), 'Google'))
file_menu.addAction(new_tab_action)
open_file_action = QAction(QIcon(os.path.join(IMAGES, 'disk--arrow.png')), "Open file...", self)
open_file_action.setShortcut("Alt+O")
open_file_action.setStatusTip("Open from file")
open_file_action.triggered.connect(self.open_file)
file_menu.addAction(open_file_action)
save_file_action = QAction(QIcon(os.path.join(IMAGES, 'disk--pencil.png')), "Save Page As...", self)
save_file_action.setStatusTip("Save current page to file")
save_file_action.triggered.connect(self.save_file)
file_menu.addAction(save_file_action)
help_menu = self.menuBar().addMenu("&Help")
docs_action = QAction(QIcon(os.path.join(IMAGES, 'lifebuoy.png')), "Spyder documentation", self)
docs_action.triggered.connect(self.navigate_docs)
help_menu.addAction(docs_action)
self.add_new_tab(QUrl('https://github.com/spyder-ide/Spyder-Workshop/blob/master/README.md'), 'Spyder Workshop')
self.show()
self.setWindowTitle("Spyder Workshop")
self.setWindowIcon(QIcon(os.path.join(HERE, 'browser.png')))
def add_new_tab(self, qurl=None, label="Blank"):
if qurl is None:
qurl = QUrl('')
browser = QWebEngineView()
browser.setUrl(qurl)
i = self.tabs.addTab(browser, label)
self.tabs.setCurrentIndex(i)
# More difficult! We only want to update the url when it's from the
# correct tab
browser.urlChanged.connect(lambda qurl, browser=browser:
self.update_urlbar(qurl, browser))
browser.loadFinished.connect(lambda _, i=i, browser=browser:
self.on_load_finished(i, browser))
def on_load_finished(self, idx, browser):
title = browser.page().title()
if 'Spyder-Workshop/README.md' and 'GitHub' in title:
title = 'Spyder Workshop'
elif "Welcome to Spyder’s Documentation" in title:
title = 'Spyder documentation'
self.tabs.setTabText(idx, title)
def tab_open_doubleclick(self, i):
if i == -1: # No tab under the click
self.add_new_tab()
def current_tab_changed(self, i):
qurl = self.tabs.currentWidget().url()
self.update_urlbar(qurl, self.tabs.currentWidget())
self.update_title(self.tabs.currentWidget())
def close_current_tab(self, i):
if self.tabs.count() < 2:
return
self.tabs.removeTab(i)
def update_title(self, browser):
if browser != self.tabs.currentWidget():
# If this signal is not from the current tab, ignore
return
#title = self.tabs.currentWidget().page().title()
#self.setWindowTitle("%s - Mozarella Ashbadger" % title)
pass
def navigate_docs(self):
self.add_new_tab(QUrl("http://docs.spyder-ide.org/current/index.html"), 'Spyder documentation')
def about(self):
dlg = AboutDialog()
dlg.exec_()
def open_file(self):
filename, _ = QFileDialog.getOpenFileName(self, "Open file", "",
"Hypertext Markup Language (*.htm *.html);;"
"All files (*.*)")
if filename:
with open(filename, 'r') as f:
html = f.read()
self.tabs.currentWidget().setHtml(html)
self.urlbar.setText(filename)
def save_file(self):
filename, _ = QFileDialog.getSaveFileName(self, "Save Page As", "",
"Hypertext Markup Language (*.htm *html);;"
"All files (*.*)")
if filename:
html = self.tabs.currentWidget().page().toHtml()
with open(filename, 'w') as f:
f.write(html.encode('utf8'))
def navigate_home(self):
self.tabs.currentWidget().setUrl(QUrl("https://github.com/spyder-ide/Spyder-Workshop/blob/master/README.md"))
idx = self.tabs.currentIndex()
self.tabs.setTabText(idx, "Spyder Workshop")
def navigate_to_url(self): # Does not receive the Url
q = QUrl(self.urlbar.text())
if q.scheme() == "":
q.setScheme("http")
self.tabs.currentWidget().setUrl(q)
def update_urlbar(self, q, browser=None):
if browser != self.tabs.currentWidget():
# If this signal is not from the current tab, ignore
return
if q.scheme() == 'https':
# Secure padlock icon
self.httpsicon.setPixmap(QPixmap(os.path.join(IMAGES, 'lock-ssl.png')))
else:
# Insecure padlock icon
self.httpsicon.setPixmap(QPixmap(os.path.join(IMAGES, 'lock-nossl.png')))
self.urlbar.setText(q.toString())
self.urlbar.setCursorPosition(0)
def main():
app = QApplication(sys.argv)
app.setApplicationName("Web browser")
window = MainWindow()
window.showMaximized()
app.exec_()