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#!/usr/bin/env python
import sys
from PySide6 import QtCore, QtWidgets, QtGui, QtWebEngineWidgets, QtWebEngineCore
import gemini
class GeminiPage(QtWebEngineCore.QWebEnginePage):
def acceptNavigationRequest(self, url, navtype, mainframe):
"""
Block non-gemini page navigation and
send the url to the os instead
"""
if url.scheme() == 'gemini':
return True
else:
QtGui.QDesktopServices().openUrl(url)
return False
class GeminiSchemeHandler(QtWebEngineCore.QWebEngineUrlSchemeHandler):
def requestStarted(self, request):
print(request.requestUrl().toString())
gem = gemini.get(request.requestUrl().toString())
print(gem['status'], gem['meta'])
buf = QtCore.QBuffer(parent=request)
buf.open(QtCore.QIODevice.WriteOnly)
buf.write(gemini.gem2html(gem['body']).encode('utf8'))
buf.seek(0)
buf.close()
request.reply(b'text/html', buf)
class GUrlBar(QtWidgets.QLineEdit):
def __init__(self):
QtWidgets.QLineEdit.__init__(self)
def setUrl(self, url):
return self.setText(url.toDisplayString())
class GBrowser(QtWidgets.QMainWindow):
def __init__(self, initial_url=None, profile=None):
if initial_url is None:
initial_url = 'gemini://gemini.circumlunar.space/'
if profile is None:
profile = QtWebEngineCore.QWebEngineProfile.defaultProfile()
QtWidgets.QMainWindow.__init__(self)
# Main Viewport
self._browser = QtWebEngineWidgets.QWebEngineView()
page = GeminiPage(profile, self._browser)
self._browser.setPage(page)
self.setCentralWidget(self._browser)
# Navigation Toolbar
back = QtWidgets.QPushButton("back")
forward = QtWidgets.QPushButton("forward")
address = GUrlBar()
toolbar = QtWidgets.QToolBar()
toolbar.setObjectName('navigationToolbar')
toolbar.addWidget(back)
toolbar.addWidget(forward)
toolbar.addWidget(address)
self.addToolBar(toolbar)
# Status Bar
request_status = QtWidgets.QLabel()
self.statusBar().addWidget(request_status)
# Connect signals
back.clicked.connect(self._browser.back)
forward.clicked.connect(self._browser.forward)
self._browser.urlChanged.connect(address.setUrl)
address.returnPressed.connect(self._browser.load)
self._browser.page().linkHovered.connect(self.set_status_url)
self._browser.load(QtCore.QUrl(initial_url))
settings = QtCore.QSettings("xcolour.net", "GeminiBrowser")
self.restoreGeometry(settings.value("geometry"))
self.restoreState(settings.value("windowState"))
self.setWindowTitle('Gemini Browser')
self.show()
# Shortcuts
down_shortcut = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_J), self)
down_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, QtCore.Qt.Key_Down, QtCore.Qt.NoModifier)
down_shortcut.activated.connect(lambda: QtWidgets.QApplication.sendEvent(self._browser.focusProxy(), down_event))
up_shortcut = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_K), self)
up_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, QtCore.Qt.Key_Up, QtCore.Qt.NoModifier)
up_shortcut.activated.connect(lambda: QtWidgets.QApplication.sendEvent(self._browser.focusProxy(), up_event))
back_shortcut = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_H), self, self._browser.back)
forward_shortcut = QtGui.QShortcut(QtGui.QKeySequence(QtCore.Qt.Key_L), self, self._browser.forward)
reload_shortcut = QtGui.QShortcut(QtGui.QKeySequence("Shift+R"), self, self._browser.reload)
def set_status_url(self, url):
if url:
self.statusBar().showMessage(url)
else:
self.statusBar().clearMessage()
def closeEvent(self, event):
settings = QtCore.QSettings("xcolour.net", "GeminiBrowser")
settings.setValue("geometry", self.saveGeometry())
settings.setValue("windowState", self.saveState())
self._browser.page().deleteLater()
super().closeEvent(event)
scheme = QtWebEngineCore.QWebEngineUrlScheme(b'gemini')
scheme.setDefaultPort(1965)
scheme.setFlags(QtWebEngineCore.QWebEngineUrlScheme.SecureScheme)
QtWebEngineCore.QWebEngineUrlScheme.registerScheme(scheme)
app = QtWidgets.QApplication(sys.argv)
gem_handler = GeminiSchemeHandler()
profile = QtWebEngineCore.QWebEngineProfile()
profile.removeAllUrlSchemeHandlers()
profile.installUrlSchemeHandler(b'gemini', gem_handler)
ex = GBrowser(sys.argv[1] if len(sys.argv) > 1 else None, profile)
sys.exit(app.exec())
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