def start(self):
'''
Starts the conversion process.
'''
def myLoadProgress(progress):
self._loadProgress = progress
def myLoadFinished(isLoaded):
self._loaded = True
webpage = QWebPage()
webpage.loadProgress.connect(myLoadProgress)
webpage.loadFinished.connect(myLoadFinished)
url = misc.temp_path('import')
baseUrl = QUrl.fromLocalFile(url)
webpage.mainFrame().setHtml(
self._document.getMainPage(mathOutput='svg'), baseUrl)
while not self._loaded and not self._canceled:
qApp.processEvents()
self.ui.label.setText('Typesetting math equations...')
if not self._canceled:
# Wait for the MathJax to typeset
while not self._mathTypeset and not self._canceled:
qApp.processEvents()
progress = int(webpage.mainFrame().evaluateJavaScript(
misc.js_command('GetMathTypesetProgress', [])).toInt()[0])
self.ui.progressBar.setValue(progress)
self._mathTypeset = webpage.mainFrame().evaluateJavaScript(
misc.js_command('IsMathTypeset', [])).toBool()
# If I haven't canceled yet, let's convert the document in a
# separate thread
if not self._canceled:
self._thread = ExportToHtmlThread(
unicode(webpage.mainFrame().evaluateJavaScript(
misc.js_command('GetBodyHTML', [])).toString()),
self._configuration, self._assigner, self._filePath)
self._thread.onProgress.connect(self.ui.progressBar.setValue)
self._thread.onProgressLabel.connect(self.ui.label.setText)
self._thread.finished.connect(self._threadFinished)
self.ui.cancelButton.clicked.connect(self._thread.quit)
self._thread.start()
def zoomReset(self):
'''
Called by application to reset the zoom factor to 1.0
'''
self._zoomIndex = self.DEFAULT_ZOOM_INDEX
self.setZoomFactor(self.ZOOM_LEVELS[self._zoomIndex])
self.update()
# Scroll view to the highlight cursor
self.page().mainFrame().evaluateJavaScript(misc.js_command('ScrollToHighlight', [True]))
def zoomOut(self):
'''
Called by application to zoom the view out.
'''
self._zoomIndex -= 1
if self._zoomIndex < 0:
self._zoomIndex = 0
self.setZoomFactor(self.ZOOM_LEVELS[self._zoomIndex])
self.update()
# Scroll view to the highlight cursor
self.page().mainFrame().evaluateJavaScript(misc.js_command('ScrollToHighlight', [True]))
def keyPressEvent(self, event):
# Ctrl+A (Select All)
if (event.key() == Qt.Key_A) and (event.nativeModifiers() and Qt.ControlModifier):
self.page().triggerAction(QWebPage.SelectAll)
event.ignore()
elif event.key() == Qt.Key_Space:
self.mainWindow.toggleSpeech()
if self._keyboardNavEnabled:
# Arrow Up
if event.key() == Qt.Key_Up:
self.page().mainFrame().evaluateJavaScript(misc.js_command('MoveCursorUp', []))
event.ignore()
# Arrow Down
elif event.key() == Qt.Key_Down:
self.page().mainFrame().evaluateJavaScript(misc.js_command('MoveCursorDown', []))
event.ignore()
# Arrow left
elif event.key() == Qt.Key_Left:
self.page().mainFrame().evaluateJavaScript(misc.js_command('MoveCursorLeft', []))
event.ignore()
# Arrow right
elif event.key() == Qt.Key_Right:
self.page().mainFrame().evaluateJavaScript(misc.js_command('MoveCursorRight', []))
event.ignore()
# Home
elif event.key() == Qt.Key_Home:
self.page().mainFrame().evaluateJavaScript(misc.js_command('MoveCursorToStart', []))
event.ignore()
# End
elif event.key() == Qt.Key_End:
self.page().mainFrame().evaluateJavaScript(misc.js_command('MoveCursorToEnd', []))
event.ignore()
# Page Up
elif event.key() == Qt.Key_PageUp:
self.page().mainFrame().evaluateJavaScript(misc.js_command('MoveCursorToPreviousBookmark', []))
# Page Down
elif event.key() == Qt.Key_PageDown:
self.page().mainFrame().evaluateJavaScript(misc.js_command('MoveCursorToNextBookmark', []))
def setZoom(self, newZoom):
'''
Sets the zoom level that most closely matches my levels
'''
deltas = []
for i in range(len(self.ZOOM_LEVELS)):
deltas.append((i, abs(self.ZOOM_LEVELS[i] - newZoom)))
deltas = sorted(deltas, key=lambda x : x[1])
self._zoomIndex = deltas[0][0]
self.setZoomFactor(self.ZOOM_LEVELS[self._zoomIndex])
self.update()
# Scroll view to the highlight cursor
self.page().mainFrame().evaluateJavaScript(misc.js_command('ScrollToHighlight', [True]))