class PlotMainWindow(QWidget):
"""Base class for plot main windows."""
def __init__(self, U, plot, length=1, title=None):
super().__init__()
layout = QVBoxLayout()
if title:
title = QLabel('<b>' + title + '</b>')
title.setAlignment(Qt.AlignHCenter)
layout.addWidget(title)
layout.addWidget(plot)
plot.set(U, 0)
if length > 1:
hlayout = QHBoxLayout()
self.slider = QSlider(Qt.Horizontal)
self.slider.setMinimum(0)
self.slider.setMaximum(length - 1)
self.slider.setTickPosition(QSlider.TicksBelow)
hlayout.addWidget(self.slider)
lcd = QLCDNumber(m.ceil(m.log10(length)))
lcd.setDecMode()
lcd.setSegmentStyle(QLCDNumber.Flat)
hlayout.addWidget(lcd)
layout.addLayout(hlayout)
hlayout = QHBoxLayout()
toolbar = QToolBar()
self.a_play = QAction(
self.style().standardIcon(QStyle.SP_MediaPlay), 'Play',
self)
self.a_play.setCheckable(True)
self.a_rewind = QAction(
self.style().standardIcon(QStyle.SP_MediaSeekBackward),
'Rewind', self)
self.a_toend = QAction(
self.style().standardIcon(QStyle.SP_MediaSeekForward),
'End', self)
self.a_step_backward = QAction(
self.style().standardIcon(QStyle.SP_MediaSkipBackward),
'Step Back', self)
self.a_step_forward = QAction(
self.style().standardIcon(QStyle.SP_MediaSkipForward),
'Step', self)
self.a_loop = QAction(
self.style().standardIcon(QStyle.SP_BrowserReload), 'Loop',
self)
self.a_loop.setCheckable(True)
toolbar.addAction(self.a_play)
toolbar.addAction(self.a_rewind)
toolbar.addAction(self.a_toend)
toolbar.addAction(self.a_step_backward)
toolbar.addAction(self.a_step_forward)
toolbar.addAction(self.a_loop)
if hasattr(self, 'save'):
self.a_save = QAction(
self.style().standardIcon(QStyle.SP_DialogSaveButton),
'Save', self)
toolbar.addAction(self.a_save)
self.a_save.triggered.connect(self.save)
hlayout.addWidget(toolbar)
self.speed = QSlider(Qt.Horizontal)
self.speed.setMinimum(0)
self.speed.setMaximum(100)
hlayout.addWidget(QLabel('Speed:'))
hlayout.addWidget(self.speed)
layout.addLayout(hlayout)
self.timer = QTimer()
self.timer.timeout.connect(self.update_solution)
self.slider.valueChanged.connect(self.slider_changed)
self.slider.valueChanged.connect(lcd.display)
self.speed.valueChanged.connect(self.speed_changed)
self.a_play.toggled.connect(self.toggle_play)
self.a_rewind.triggered.connect(self.rewind)
self.a_toend.triggered.connect(self.to_end)
self.a_step_forward.triggered.connect(self.step_forward)
self.a_step_backward.triggered.connect(self.step_backward)
self.speed.setValue(50)
elif hasattr(self, 'save'):
hlayout = QHBoxLayout()
toolbar = QToolBar()
self.a_save = QAction(
self.style().standardIcon(QStyle.SP_DialogSaveButton),
'Save', self)
toolbar.addAction(self.a_save)
hlayout.addWidget(toolbar)
layout.addLayout(hlayout)
self.a_save.triggered.connect(self.save)
self.setLayout(layout)
self.plot = plot
self.U = U
self.length = length
def slider_changed(self, ind):
self.plot.set(self.U, ind)
def speed_changed(self, val):
self.timer.setInterval(val * 20)
def update_solution(self):
ind = self.slider.value() + 1
if ind >= self.length:
if self.a_loop.isChecked():
ind = 0
else:
self.a_play.setChecked(False)
return
self.slider.setValue(ind)
def toggle_play(self, checked):
if checked:
if self.slider.value() + 1 == self.length:
self.slider.setValue(0)
self.timer.start()
else:
self.timer.stop()
def rewind(self):
self.slider.setValue(0)
def to_end(self):
self.a_play.setChecked(False)
self.slider.setValue(self.length - 1)
def step_forward(self):
self.a_play.setChecked(False)
ind = self.slider.value() + 1
if ind == self.length and self.a_loop.isChecked():
ind = 0
if ind < self.length:
self.slider.setValue(ind)
def step_backward(self):
self.a_play.setChecked(False)
ind = self.slider.value() - 1
if ind == -1 and self.a_loop.isChecked():
ind = self.length - 1
if ind >= 0:
self.slider.setValue(ind)
class PlotMainWindow(QWidget):
"""Base class for plot main windows."""
def __init__(self, U, plot, length=1, title=None):
super().__init__()
layout = QVBoxLayout()
if title:
title = QLabel('<b>' + title + '</b>')
title.setAlignment(Qt.AlignHCenter)
layout.addWidget(title)
layout.addWidget(plot)
plot.set(U, 0)
if length > 1:
hlayout = QHBoxLayout()
self.slider = QSlider(Qt.Horizontal)
self.slider.setMinimum(0)
self.slider.setMaximum(length - 1)
self.slider.setTickPosition(QSlider.TicksBelow)
hlayout.addWidget(self.slider)
lcd = QLCDNumber(m.ceil(m.log10(length)))
lcd.setDecMode()
lcd.setSegmentStyle(QLCDNumber.Flat)
hlayout.addWidget(lcd)
layout.addLayout(hlayout)
hlayout = QHBoxLayout()
toolbar = QToolBar()
self.a_play = QAction(self.style().standardIcon(QStyle.SP_MediaPlay), 'Play', self)
self.a_play.setCheckable(True)
self.a_rewind = QAction(self.style().standardIcon(QStyle.SP_MediaSeekBackward), 'Rewind', self)
self.a_toend = QAction(self.style().standardIcon(QStyle.SP_MediaSeekForward), 'End', self)
self.a_step_backward = QAction(self.style().standardIcon(QStyle.SP_MediaSkipBackward),
'Step Back', self)
self.a_step_forward = QAction(self.style().standardIcon(QStyle.SP_MediaSkipForward), 'Step', self)
self.a_loop = QAction(self.style().standardIcon(QStyle.SP_BrowserReload), 'Loop', self)
self.a_loop.setCheckable(True)
toolbar.addAction(self.a_play)
toolbar.addAction(self.a_rewind)
toolbar.addAction(self.a_toend)
toolbar.addAction(self.a_step_backward)
toolbar.addAction(self.a_step_forward)
toolbar.addAction(self.a_loop)
if hasattr(self, 'save'):
self.a_save = QAction(self.style().standardIcon(QStyle.SP_DialogSaveButton), 'Save', self)
toolbar.addAction(self.a_save)
self.a_save.triggered.connect(self.save)
hlayout.addWidget(toolbar)
self.speed = QSlider(Qt.Horizontal)
self.speed.setMinimum(0)
self.speed.setMaximum(100)
hlayout.addWidget(QLabel('Speed:'))
hlayout.addWidget(self.speed)
layout.addLayout(hlayout)
self.timer = QTimer()
self.timer.timeout.connect(self.update_solution)
self.slider.valueChanged.connect(self.slider_changed)
self.slider.valueChanged.connect(lcd.display)
self.speed.valueChanged.connect(self.speed_changed)
self.a_play.toggled.connect(self.toggle_play)
self.a_rewind.triggered.connect(self.rewind)
self.a_toend.triggered.connect(self.to_end)
self.a_step_forward.triggered.connect(self.step_forward)
self.a_step_backward.triggered.connect(self.step_backward)
self.speed.setValue(50)
elif hasattr(self, 'save'):
hlayout = QHBoxLayout()
toolbar = QToolBar()
self.a_save = QAction(self.style().standardIcon(QStyle.SP_DialogSaveButton), 'Save', self)
toolbar.addAction(self.a_save)
hlayout.addWidget(toolbar)
layout.addLayout(hlayout)
self.a_save.triggered.connect(self.save)
self.setLayout(layout)
self.plot = plot
self.U = U
self.length = length
def slider_changed(self, ind):
self.plot.set(self.U, ind)
def speed_changed(self, val):
self.timer.setInterval(val * 20)
def update_solution(self):
ind = self.slider.value() + 1
if ind >= self.length:
if self.a_loop.isChecked():
ind = 0
else:
self.a_play.setChecked(False)
return
self.slider.setValue(ind)
def toggle_play(self, checked):
if checked:
if self.slider.value() + 1 == self.length:
self.slider.setValue(0)
self.timer.start()
else:
self.timer.stop()
def rewind(self):
self.slider.setValue(0)
def to_end(self):
self.a_play.setChecked(False)
self.slider.setValue(self.length - 1)
def step_forward(self):
self.a_play.setChecked(False)
ind = self.slider.value() + 1
if ind == self.length and self.a_loop.isChecked():
ind = 0
if ind < self.length:
self.slider.setValue(ind)
def step_backward(self):
self.a_play.setChecked(False)
ind = self.slider.value() - 1
if ind == -1 and self.a_loop.isChecked():
ind = self.length - 1
if ind >= 0:
self.slider.setValue(ind)
class MainWindow(QMainWindow):
def __init__(self, url):
super().__init__()
self.setAttribute(Qt.WA_DeleteOnClose, True)
self.progress = 0
f = QFile()
f.setFileName(":/jquery.min.js")
f.open(QIODevice.ReadOnly)
self.jQuery = f.readAll().data().decode()
self.jQuery += "\nvar qt = { 'jQuery': jQuery.noConflict(true) };"
f.close()
self.view = QWebEngineView(self)
self.view.load(url)
self.view.loadFinished.connect(self.adjustLocation)
self.view.titleChanged.connect(self.adjustTitle)
self.view.loadProgress.connect(self.setProgress)
self.view.loadFinished.connect(self.finishLoading)
self.locationEdit = QLineEdit(self)
self.locationEdit.setSizePolicy(
QSizePolicy.Expanding,
self.locationEdit.sizePolicy().verticalPolicy())
self.locationEdit.returnPressed.connect(self.changeLocation)
toolBar = self.addToolBar(self.tr("Navigation"))
toolBar.addAction(self.view.pageAction(QWebEnginePage.Back))
toolBar.addAction(self.view.pageAction(QWebEnginePage.Forward))
toolBar.addAction(self.view.pageAction(QWebEnginePage.Reload))
toolBar.addAction(self.view.pageAction(QWebEnginePage.Stop))
toolBar.addWidget(self.locationEdit)
viewMenu = self.menuBar().addMenu(self.tr("&View"))
viewSourceAction = QAction(self.tr("Page Source"), self)
viewSourceAction.triggered.connect(self.viewSource)
viewMenu.addAction(viewSourceAction)
effectMenu = self.menuBar().addMenu(self.tr("&Effect"))
effectMenu.addAction(self.tr("Highlight all links"),
self.highlightAllLinks)
self.rotateAction = QAction(self)
self.rotateAction.setIcon(self.style().standardIcon(
QStyle.SP_FileDialogDetailedView))
self.rotateAction.setCheckable(True)
self.rotateAction.setText(self.tr("Turn images upside down"))
self.rotateAction.toggled.connect(self.rotateImages)
effectMenu.addAction(self.rotateAction)
toolsMenu = self.menuBar().addMenu(self.tr("&Tools"))
toolsMenu.addAction(self.tr("Remove GIF images"), self.removeGifImages)
toolsMenu.addAction(self.tr("Remove all inline frames"),
self.removeInlineFrames)
toolsMenu.addAction(self.tr("Remove all object elements"),
self.removeObjectElements)
toolsMenu.addAction(self.tr("Remove all embedded elements"),
self.removeEmbeddedElements)
self.setCentralWidget(self.view)
@Slot()
def adjustLocation(self):
self.locationEdit.setText(self.view.url().toString())
@Slot()
def changeLocation(self):
url = QUrl.fromUserInput(self.locationEdit.text())
self.view.load(url)
self.view.setFocus()
@Slot()
def adjustTitle(self):
if self.progress <= 0 or self.progress >= 100:
self.setWindowTitle(self.view.title())
else:
self.setWindowTitle("%s (%2d)" %
(self.view.title(), self.progress))
@Slot(int)
def setProgress(self, p):
self.progress = p
self.adjustTitle()
@Slot()
def finishLoading(self):
self.progress = 100
self.adjustTitle()
self.view.page().runJavaScript(self.jQuery)
self.rotateImages(self.rotateAction.isChecked())
@Slot()
def viewSource(self):
self.textEdit = QTextEdit()
self.textEdit.setAttribute(Qt.WA_DeleteOnClose)
self.textEdit.adjustSize()
self.textEdit.move(self.geometry().center() -
self.textEdit.rect().center())
self.textEdit.show()
self.view.page().toHtml(self.textEdit.setPlainText)
@Slot()
def highlightAllLinks(self):
code = "qt.jQuery('a').each( function () { qt.jQuery(this).css('background-color', 'yellow') } )"
self.view.page().runJavaScript(code)
@Slot(bool)
def rotateImages(self, invert):
code = ""
if invert:
code = "qt.jQuery('img').each( function () { qt.jQuery(this).css('transition', 'transform 2s'); qt.jQuery(this).css('transform', 'rotate(180deg)') } )" # noqa: E501
else:
code = "qt.jQuery('img').each( function () { qt.jQuery(this).css('transition', 'transform 2s'); qt.jQuery(this).css('transform', 'rotate(0deg)') } )" # noqa: E501
self.view.page().runJavaScript(code)
@Slot()
def removeGifImages(self):
code = "qt.jQuery('[src*=gif]').remove()"
self.view.page().runJavaScript(code)
@Slot()
def removeInlineFrames(self):
code = "qt.jQuery('iframe').remove()"
self.view.page().runJavaScript(code)
@Slot()
def removeObjectElements(self):
code = "qt.jQuery('object').remove()"
self.view.page().runJavaScript(code)
@Slot()
def removeEmbeddedElements(self):
code = "qt.jQuery('embed').remove()"
self.view.page().runJavaScript(code)