class QtWebPageRender:
url: str
html_str: str
html_parser: requests_html.HTML
def __init__(self, qt_app_singleton=None):
self._qt_app = qt_app_singleton or get_qt_application_singleton()
self._qt_webpage = QWebEnginePage()
self._qt_webpage.loadFinished.connect(self._on_load_finished)
def _on_load_finished(self):
self._qt_webpage.toHtml(self._update_html)
def _update_html(self, qt_webpage_to_html: str):
self.html_str = qt_webpage_to_html
self.html_parser = requests_html.HTML(url=self.url, html=self.html_str)
self.find = self.html_parser.find
self.xpath = self.html_parser.xpath
self._qt_app.quit()
def set_url(self, url: str):
self.url = url
self._qt_webpage.load(QUrl(url))
self._qt_app.exec_()
def set_html(self, html: str, base_url: str = ''):
self.url = base_url
self._qt_webpage.setHtml(html, QUrl(base_url))
self._qt_app.exec_()
@property
def text(self):
return self.html_parser.text
class MapWidget(QWebEngineView):
"""
The MapWidget class is a QWebEngineView that houses the leaflet map.
Since it is a QWidget, it can be added to any QLayout.
"""
@property
def page(self):
return self._page
@property
def channel(self):
return self._channel
def __init__(self,
use_file_absolute_path: bool = True,
alternative_base_path: str = ""):
super().__init__()
if use_file_absolute_path or len(alternative_base_path) == 0:
self.base_path = os.path.dirname(os.path.abspath(__file__))
else:
self.base_path = alternative_base_path
self._page = QWebEnginePage()
self.setPage(self._page)
self._channel = QWebChannel()
self._page.setWebChannel(self._channel)
self._loadPage()
self.setContextMenuPolicy(Qt.NoContextMenu)
def _get_page_path(self):
return os.path.join(self.base_path, 'web', 'map.html')
def _loadPage(self):
html_path = self._get_page_path()
# QEventLoop is used to make the page loading behave syncronously
init_loop = QEventLoop()
self._page.loadFinished.connect(init_loop.quit)
self._page.load(QUrl().fromLocalFile(html_path))
init_loop.exec_()