forked from openlp/openlp
109 lines
4.9 KiB
Python
109 lines
4.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
##########################################################################
|
|
# OpenLP - Open Source Lyrics Projection #
|
|
# ---------------------------------------------------------------------- #
|
|
# Copyright (c) 2008-2022 OpenLP Developers #
|
|
# ---------------------------------------------------------------------- #
|
|
# This program is free software: you can redistribute it and/or modify #
|
|
# it under the terms of the GNU General Public License as published by #
|
|
# the Free Software Foundation, either version 3 of the License, or #
|
|
# (at your option) any later version. #
|
|
# #
|
|
# This program is distributed in the hope that it will be useful, #
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
|
|
# GNU General Public License for more details. #
|
|
# #
|
|
# You should have received a copy of the GNU General Public License #
|
|
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
|
|
##########################################################################
|
|
"""
|
|
Subclass of QWebEngineView. Adds some special eventhandling needed for screenshots/previews
|
|
Heavily inspired by https://stackoverflow.com/questions/33467776/qt-qwebengine-render-after-scrolling/33576100#33576100
|
|
"""
|
|
import logging
|
|
|
|
from PyQt5 import QtCore, QtWebEngineWidgets, QtWidgets
|
|
|
|
from openlp.core.common.applocation import AppLocation
|
|
|
|
|
|
LOG_LEVELS = {
|
|
QtWebEngineWidgets.QWebEnginePage.InfoMessageLevel: logging.INFO,
|
|
QtWebEngineWidgets.QWebEnginePage.WarningMessageLevel: logging.WARNING,
|
|
QtWebEngineWidgets.QWebEnginePage.ErrorMessageLevel: logging.ERROR
|
|
}
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class WebEnginePage(QtWebEngineWidgets.QWebEnginePage):
|
|
"""
|
|
A custom WebEngine page to capture Javascript console logging
|
|
"""
|
|
def javaScriptConsoleMessage(self, level, message, line_number, source_id):
|
|
"""
|
|
Override the parent method in order to log the messages in OpenLP
|
|
"""
|
|
# The JS log has the entire file location, which we don't really care about
|
|
app_dir = AppLocation.get_directory(AppLocation.AppDir).parent
|
|
if str(app_dir) in source_id:
|
|
source_id = source_id.replace('file://{app_dir}/'.format(app_dir=app_dir), '')
|
|
# Log the JS messages to the Python logger
|
|
log.log(LOG_LEVELS[level], '{source_id}:{line_number} {message}'.format(source_id=source_id,
|
|
line_number=line_number,
|
|
message=message))
|
|
|
|
|
|
class WebEngineView(QtWebEngineWidgets.QWebEngineView):
|
|
"""
|
|
A sub-classed QWebEngineView to handle paint events of OpenGL (does not seem to work)
|
|
and set some attributtes.
|
|
"""
|
|
_child = None # QtWidgets.QOpenGLWidget or QWidget?
|
|
delegatePaint = QtCore.pyqtSignal()
|
|
|
|
def __init__(self, parent=None):
|
|
"""
|
|
Constructor
|
|
"""
|
|
super(WebEngineView, self).__init__(parent)
|
|
self.setPage(WebEnginePage(self))
|
|
self.settings().setAttribute(QtWebEngineWidgets.QWebEngineSettings.LocalStorageEnabled, True)
|
|
self.settings().setAttribute(QtWebEngineWidgets.QWebEngineSettings.LocalContentCanAccessFileUrls, True)
|
|
self.settings().setAttribute(QtWebEngineWidgets.QWebEngineSettings.LocalContentCanAccessRemoteUrls, True)
|
|
self.page().settings().setAttribute(QtWebEngineWidgets.QWebEngineSettings.LocalStorageEnabled, True)
|
|
self.page().settings().setAttribute(QtWebEngineWidgets.QWebEngineSettings.LocalContentCanAccessFileUrls, True)
|
|
self.page().settings().setAttribute(QtWebEngineWidgets.QWebEngineSettings.LocalContentCanAccessRemoteUrls, True)
|
|
|
|
def eventFilter(self, obj, ev):
|
|
"""
|
|
Emit delegatePaint on paint event of the last added QOpenGLWidget child
|
|
"""
|
|
if obj == self._child:
|
|
if ev.type() == QtCore.QEvent.MouseButtonPress or ev.type() == QtCore.QEvent.TouchBegin:
|
|
self.display_clicked()
|
|
if ev.type() == QtCore.QEvent.Paint:
|
|
self.delegatePaint.emit()
|
|
return super(WebEngineView, self).eventFilter(obj, ev)
|
|
|
|
def display_clicked(self):
|
|
"""
|
|
Dummy method to be overridden
|
|
"""
|
|
pass
|
|
|
|
def event(self, ev):
|
|
"""
|
|
Handle events
|
|
"""
|
|
if ev.type() == QtCore.QEvent.ChildAdded:
|
|
# Only use QWidget child (used to be QOpenGLWidget)
|
|
w = ev.child()
|
|
if w and isinstance(w, QtWidgets.QWidget):
|
|
self._child = w
|
|
w.installEventFilter(self)
|
|
return super(WebEngineView, self).event(ev)
|