class FileController(object):
def __init__(self,
manager,
opusDataPath,
parentWidget,
listen_to_menu=True):
self.addTree(opusDataPath, parentWidget)
self.currentColumn = None
self.currentIndex = None
self.classification = ""
self.manager = manager
if listen_to_menu:
QObject.connect(
self.treeview,
SIGNAL("customContextMenuRequested(const QPoint &)"),
self.process_custom_menu)
def addTree(self, opusDataPath, parentWidget):
self.containerWidget = parentWidget
self.opusDataPath = opusDataPath
self.treeview = QTreeView()
filters = QStringList()
filters.append("*.*")
#filters.append("*.py")
#filters.append("*.shp")
#filters.append("*.tif")
self.model = QDirModel(filters,
QDir.Files | QDir.AllDirs | QDir.NoDotAndDotDot,
QDir.Name)
self.treeview.setModel(self.model)
if self.opusDataPath:
self.treeview.setRootIndex(self.model.index(self.opusDataPath))
self.treeview.setColumnWidth(0, 200)
self.treeview.hideColumn(2)
self.treeview.hideColumn(3)
self.containerWidget.layout().addWidget(self.treeview)
# Hook up to the mousePressEvent and pressed
self.treeview.setContextMenuPolicy(Qt.CustomContextMenu)
def close(self):
self.treeview.hide()
self.containerWidget.layout().removeWidget(self.treeview)
return True
def process_custom_menu(self, position):
raise Exception('Method processCustomMenu is not implemented')
class FileController(object):
def __init__(self, manager, opusDataPath, parentWidget, listen_to_menu = True):
self.addTree(opusDataPath, parentWidget)
self.currentColumn = None
self.currentIndex = None
self.classification = ""
self.manager = manager
if listen_to_menu:
QObject.connect(self.treeview,
SIGNAL("customContextMenuRequested(const QPoint &)"),
self.process_custom_menu)
def addTree(self, opusDataPath, parentWidget):
self.containerWidget = parentWidget
self.opusDataPath = opusDataPath
self.treeview = QTreeView()
filters = QStringList()
filters.append("*.*")
#filters.append("*.py")
#filters.append("*.shp")
#filters.append("*.tif")
self.model = QDirModel(filters, QDir.Files|QDir.AllDirs|QDir.NoDotAndDotDot, QDir.Name)
self.treeview.setModel(self.model)
if self.opusDataPath:
self.treeview.setRootIndex(self.model.index(self.opusDataPath))
self.treeview.setColumnWidth(0,200)
self.treeview.hideColumn(2)
self.treeview.hideColumn(3)
self.containerWidget.layout().addWidget(self.treeview)
# Hook up to the mousePressEvent and pressed
self.treeview.setContextMenuPolicy(Qt.CustomContextMenu)
def close(self):
self.treeview.hide()
self.containerWidget.layout().removeWidget(self.treeview)
return True
def process_custom_menu(self, position):
raise Exception('Method processCustomMenu is not implemented')
class XNavigationEdit(XLineEdit):
""" """
navigationChanged = Signal()
__designer_icon__ = projexui.resources.find('img/ui/navigate.png')
def __init__( self, parent = None ):
super(XNavigationEdit, self).__init__( parent )
# define custom properties
self._separator = '/'
self._partsEditingEnabled = True
self._originalText = ''
self._scrollWidget = QScrollArea(self)
self._partsWidget = QWidget(self._scrollWidget)
self._buttonGroup = QButtonGroup(self)
self._scrollAmount = 0
self._navigationModel = None
# create the completer tree
palette = self.palette()
palette.setColor(palette.Base, palette.color(palette.Window))
palette.setColor(palette.Text, palette.color(palette.WindowText))
bg = palette.color(palette.Highlight)
abg = bg.darker(115)
fg = palette.color(palette.HighlightedText)
sbg = 'rgb(%s, %s, %s)' % (bg.red(), bg.green(), bg.blue())
sabg = 'rgb(%s, %s, %s)' % (abg.red(), abg.green(), abg.blue())
sfg = 'rgb(%s, %s, %s)' % (fg.red(), fg.green(), fg.blue())
style = 'QTreeView::item:hover { '\
' color: %s;'\
' background: qlineargradient(x1:0,'\
' y1:0,'\
' x2:0,'\
' y2:1,'\
' stop: 0 %s,'\
' stop: 1 %s);'\
'}' % (sfg, sbg, sabg)
self._completerTree = QTreeView(self)
self._completerTree.setStyleSheet(style)
self._completerTree.header().hide()
self._completerTree.setFrameShape(QTreeView.Box)
self._completerTree.setFrameShadow(QTreeView.Plain)
self._completerTree.setPalette(palette)
self._completerTree.setEditTriggers(QTreeView.NoEditTriggers)
self._completerTree.setWindowFlags(Qt.Popup)
self._completerTree.installEventFilter(self)
self._completerTree.setRootIsDecorated(False)
self._completerTree.setItemsExpandable(False)
# create the editing widget
layout = QHBoxLayout()
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(0)
layout.addStretch()
self._scrollWidget.setFrameShape( QScrollArea.NoFrame )
self._scrollWidget.setFocusPolicy(Qt.NoFocus)
self._scrollWidget.setWidget(self._partsWidget)
self._scrollWidget.setWidgetResizable(True)
self._scrollWidget.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self._scrollWidget.setAlignment(Qt.AlignTop | Qt.AlignRight)
self._scrollWidget.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self._scrollWidget.setContentsMargins(0, 0, 0, 0)
self._scrollWidget.setViewportMargins(0, 0, 0, 0)
self._scrollWidget.move(2, 2)
self._partsWidget.setLayout(layout)
self._partsWidget.setCursor(Qt.ArrowCursor)
self._partsWidget.setAutoFillBackground(True)
self._partsWidget.setFixedHeight(self.height() - 12)
palette = self._partsWidget.palette()
palette.setColor(palette.Background, palette.color(palette.Base))
self._partsWidget.setPalette(palette)
# create connections
self._completerTree.clicked.connect( self.navigateToIndex )
self._buttonGroup.buttonClicked.connect( self.handleButtonClick )
self._scrollWidget.horizontalScrollBar().valueChanged.connect(
self.scrollParts )
def acceptEdit( self ):
"""
Accepts the current text and rebuilds the parts widget.
"""
if ( self._partsWidget.isVisible() ):
return False
use_completion = self.completer().popup().isVisible()
completion = self.completer().currentCompletion()
self._completerTree.hide()
self.completer().popup().hide()
if ( use_completion ):
self.setText(completion)
else:
self.rebuild()
return True
def cancelEdit( self ):
"""
Rejects the current edit and shows the parts widget.
"""
if ( self._partsWidget.isVisible() ):
return False
self._completerTree.hide()
self.completer().popup().hide()
self.setText(self._originalText)
return True
def currentItem( self ):
"""
Returns the current navigation item from the current path.
:return <XNavigationItem> || None
"""
model = self.navigationModel()
if ( not model ):
return None
return model.itemByPath(self.text())
def eventFilter( self, object, event ):
"""
Filters the events for the inputed object through this edit.
:param object | <QObject>
event | <QEvent>
:return <bool> | consumed
"""
if ( event.type() == event.KeyPress ):
if ( event.key() == Qt.Key_Escape ):
self._completerTree.hide()
self.completer().popup().hide()
self.cancelEdit()
elif ( event.key() in (Qt.Key_Return, Qt.Key_Enter) ):
self.acceptEdit()
return True
elif ( event.key() == Qt.Key_Tab ):
if ( self.completer().popup().isVisible() ):
text = str(self.completer().currentCompletion())
super(XNavigationEdit, self).setText(text)
return True
else:
self.acceptEdit()
return False
elif ( event.type() == event.MouseButtonPress ):
if ( not self._completerTree.rect().contains(event.pos()) ):
self._completerTree.hide()
self.completer().popup().hide()
self.cancelEdit()
return False
def focusOutEvent( self, event ):
"""
Overloads the focus out event to cancel editing when the widget loses
focus.
:param event | <QFocusEvent>
"""
super(XNavigationEdit, self).focusOutEvent(event)
self.cancelEdit()
def handleButtonClick( self, button ):
"""
Handle the event when a user clicks on one of the part buttons.
:param button | <QToolButton>
"""
path = button.property('path')
is_completer = button.property('is_completer')
# popup a completion menu
if ( unwrapVariant(is_completer) ):
model = self.navigationModel()
if ( not model ):
return
sep = self.separator()
path = str(unwrapVariant(path))
item = model.itemByPath(path, includeRoot = True)
if ( not item ):
return
curr_path = str(self.text()).strip(self.separator())
curr_path = curr_path.replace(path, '').strip(self.separator())
child_name = ''
if ( curr_path ):
child_name = curr_path.split(self.separator())[0]
index = model.indexFromItem(item)
self._completerTree.move(QCursor.pos())
self._completerTree.setRootIndex(index)
self._completerTree.verticalScrollBar().setValue(0)
if ( child_name ):
child_item = None
for i in range(item.rowCount()):
child = item.child(i)
if ( child.text() == child_name ):
child_item = child
break
if ( child_item ):
child_index = model.indexFromItem(child_item)
self._completerTree.setCurrentIndex(child_index)
self._completerTree.scrollTo(child_index)
self._completerTree.show()
self._completerTree.setUpdatesEnabled(True)
else:
self.setText(unwrapVariant(path))
def keyPressEvent( self, event ):
"""
Overloads the key press event to listen for escape calls to cancel the
parts editing.
:param event | <QKeyPressEvent>
"""
if ( self.scrollWidget().isHidden() ):
if ( event.key() == Qt.Key_Escape ):
self.cancelEdit()
return
elif ( event.key() in (Qt.Key_Return, Qt.Key_Enter) ):
self.acceptEdit()
return
elif ( event.key() == Qt.Key_A and
event.modifiers() == Qt.ControlModifier ):
self.startEdit()
super(XNavigationEdit, self).keyPressEvent(event)
def mouseDoubleClickEvent( self, event ):
"""
Overloads the system to enable editing when a user double clicks.
:param event | <QMouseEvent>
"""
super(XNavigationEdit, self).mouseDoubleClickEvent(event)
self.startEdit()
def navigationModel( self ):
"""
Returns the navigation model linked with this edit.
:return <XNavigationModel> || None
"""
return self._navigationModel
def navigateToIndex( self, index ):
"""
Navigates to the inputed action's path.
:param action | <QAction>
"""
self._completerTree.hide()
item = self._navigationModel.itemFromIndex(index)
self.setText(self._navigationModel.itemPath(item))
def parts( self ):
"""
Returns the parts that are used for this system.
:return [<str>, ..]
"""
path = str(self.text()).strip(self.separator())
if ( not path ):
return []
return path.split(self.separator())
def partsWidget( self ):
"""
Returns the widget that contains the parts system.
:return <QScrollArea>
"""
return self._partsWidget
def startEdit( self ):
"""
Rebuilds the pathing based on the parts.
"""
self._originalText = self.text()
self.scrollWidget().hide()
self.setFocus()
self.selectAll()
def rebuild( self ):
"""
Rebuilds the parts widget with the latest text.
"""
navitem = self.currentItem()
if ( navitem ):
navitem.initialize()
self.setUpdatesEnabled(False)
self.scrollWidget().show()
self._originalText = ''
partsw = self.partsWidget()
for button in self._buttonGroup.buttons():
self._buttonGroup.removeButton(button)
button.close()
button.setParent(None)
button.deleteLater()
# create the root button
layout = partsw.layout()
parts = self.parts()
button = QToolButton(partsw)
button.setAutoRaise(True)
button.setMaximumWidth(12)
button.setArrowType(Qt.RightArrow)
button.setProperty('path', wrapVariant(''))
button.setProperty('is_completer', wrapVariant(True))
last_button = button
self._buttonGroup.addButton(button)
layout.insertWidget(0, button)
# check to see if we have a navigation model setup
if ( self._navigationModel ):
last_item = self._navigationModel.itemByPath(self.text())
show_last = last_item and last_item.rowCount() > 0
else:
show_last = False
# load the navigation system
count = len(parts)
for i, part in enumerate(parts):
path = self.separator().join(parts[:i+1])
button = QToolButton(partsw)
button.setAutoRaise(True)
button.setText(part)
if ( self._navigationModel ):
item = self._navigationModel.itemByPath(path)
if ( item ):
button.setIcon(item.icon())
button.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
button.setProperty('path', wrapVariant(path))
button.setProperty('is_completer', wrapVariant(False))
self._buttonGroup.addButton(button)
layout.insertWidget((i * 2) + 1, button)
# determine if we should show the final button
if ( show_last or i < (count - 1) ):
button = QToolButton(partsw)
button.setAutoRaise(True)
button.setMaximumWidth(12)
button.setArrowType(Qt.RightArrow)
button.setProperty('path', wrapVariant(path))
button.setProperty('is_completer', wrapVariant(True))
self._buttonGroup.addButton(button)
layout.insertWidget((i * 2) + 2, button)
last_button = button
if ( self.scrollWidget().width() < partsw.width() ):
self.scrollParts(partsw.width() - self.scrollWidget().width())
self.setUpdatesEnabled(True)
self.navigationChanged.emit()
def resizeEvent( self, event ):
"""
Resizes the current widget and its parts widget.
:param event | <QResizeEvent>
"""
super(XNavigationEdit, self).resizeEvent(event)
w = self.width()
h = self.height()
self._scrollWidget.resize(w - 4, h - 4)
if ( self._scrollWidget.width() < self._partsWidget.width() ):
self.scrollParts( self._partsWidget.width() - self._scrollWidget.width() )
def scrollParts( self, amount ):
"""
Scrolls the parts to offset the scrolling amount.
:param amount | <int>
"""
change = self._scrollAmount - amount
self._partsWidget.scroll(change, 0)
self._scrollAmount = amount
def scrollWidget( self ):
"""
Returns the scrolling widget.
:return <QScrollArea>
"""
return self._scrollWidget
def separator( self ):
"""
Returns the separation character that is used for this edit.
:return <str>
"""
return self._separator
def setTopLevelItems( self, items ):
"""
Initializes the navigation system to start with the inputed root \
item.
:param item | <XNavigationItem>
"""
if ( not self._navigationModel ):
self.setNavigationModel(XNavigationModel(self))
self._navigationModel.setTopLevelItems(items)
def setNavigationModel( self, model ):
"""
Sets the navigation model for this edit.
:param model | <XNavigationModel>
"""
self._navigationModel = model
self._completerTree.setModel(model)
if ( model ):
model.setSeparator(self.separator())
completer = XNavigationCompleter(model, self)
self.setCompleter(completer)
completer.popup().installEventFilter(self)
else:
self.setCompleter(None)
self.rebuild()
def setParts( self, parts ):
"""
Sets the path for this edit widget by providing the parts to the path.
:param parts | [<str>, ..]
"""
self.setText(self.separator().join(map(str, parts)))
def setSeparator( self, separator ):
"""
Sets the separator to the inputed character.
:param separator | <str>
"""
self._separator = separator
if ( self._navigationModel ):
self._navigationModel.setSeparator(separator)
self.rebuild()
def setText( self, text ):
"""
Sets the text for this edit to the inputed text.
:param text | <str>
"""
super(XNavigationEdit, self).setText(text)
self.scrollWidget().show()
if ( text == '' or self._originalText != text ):
self.rebuild()
class Lectern(QMainWindow):
def __init__(self, parent=None):
super(Lectern, self).__init__(parent)
self.anchor = None
self.initMainMenu()
self.initToolbar()
splitter = QSplitter()
self.tocView = QTreeView()
self.tocView.clicked.connect(self.navTo)
self.tocModel = TableOfContents()
self.tocModel.isEmpty.connect(self.handleTOCLoad)
self.tocView.setModel(self.tocModel)
self.tocView.expandAll()
self.tocView.hide()
splitter.addWidget(self.tocView)
self.webView = QGraphicsWebView()
frame = self.webView.page().mainFrame()
scene = QGraphicsScene()
scene.addItem(self.webView)
self.graphicsView = GraphicsView(scene)
self.graphicsView.setFrameShape(QFrame.NoFrame)
glWidget = QGLWidget(self)
self.graphicsView.setViewport(glWidget)
self.webView.loadFinished.connect(self.handleLoad)
splitter.addWidget(self.graphicsView)
self.setCentralWidget(splitter)
self.ebook_info = {}
self.setWindowTitle('Lectern')
try:
self.ebook_info = self.openBook(QApplication.arguments()[1])
except IndexError:
pass
def initMainMenu(self):
menuBar = self.menuBar()
menuBar.setNativeMenuBar(True)
# TODO: add CROSS-PLATFORM shortcut keys. (e.g. For Quit, use ⌘Q on Mac OS X, ALT-F4 elsewhere)
fileMenu = QMenu('File', menuBar)
navMenu = QMenu('Navigate', menuBar)
# File Menu
openAction = QAction('Open', fileMenu)
openAction.triggered.connect(self.chooseEbook)
fileMenu.addAction(openAction)
quitAction = QAction('Quit', fileMenu)
quitAction.triggered.connect(self.closeEvent)
fileMenu.addAction(quitAction)
# Nav Menu
prevChatperAction = QAction('Previous Chapter', navMenu)
prevChatperAction.triggered.connect(self.prevChapter)
navMenu.addAction(prevChatperAction)
nextChatperAction = QAction('Next Chapter', navMenu)
nextChatperAction.triggered.connect(self.nextChapter)
navMenu.addAction(nextChatperAction)
menuBar.addMenu(fileMenu)
menuBar.addMenu(navMenu)
def initToolbar(self):
toolBar = QToolBar(self)
chooseAction = QAction(self.style().standardIcon(
QStyle.SP_DialogOpenButton), 'Open', toolBar)
chooseAction.triggered.connect(self.chooseEbook)
toolBar.addAction(chooseAction)
self.prevAction = QAction(self.style().standardIcon(
QStyle.SP_ArrowBack), 'Go back', toolBar)
self.prevAction.setEnabled(False)
self.prevAction.triggered.connect(self.prevChapter)
toolBar.addAction(self.prevAction)
self.nextAction = QAction(self.style().standardIcon(
QStyle.SP_ArrowForward), 'Go forward', toolBar)
self.nextAction.setEnabled(False)
self.nextAction.triggered.connect(self.nextChapter)
toolBar.addAction(self.nextAction)
self.addToolBar(toolBar)
def chooseEbook(self):
path = QFileDialog.getOpenFileName(self, 'Open eBook', QDesktopServices.storageLocation(
QDesktopServices.DocumentsLocation),'EPUBs (*.epub)')
if not isfile(path):
return
if self.ebook_info is not None and 'temp_path' in self.ebook_info:
if exists(self.ebook_info['temp_path']):
rmtree(self.ebook_info['temp_path'])
path = QDir.toNativeSeparators(path)
self.ebook_info = self.openBook(path)
def openBook(self, path):
ebook_info = {}
path = realpath(path)
if not isfile(path):
QMessageBox.critical(self, 'File not found', 'File not found')
mimetype, _ = guess_type(path)
if mimetype != 'application/epub+zip':
QMessageBox.critical(self, 'Not an EPUB', 'Not an EPUB')
return None
ebook = ZipFile(path)
names = ebook.namelist()
if not 'META-INF/container.xml' in names:
ebook.close()
QMessageBox.critical(self, 'Invalid EPUB', 'container.xml not '\
'found')
return None
container_tree = etree.parse(ebook.open('META-INF/container.xml'))
rootfile = container_tree.xpath("//*[local-name() = 'rootfile']")
if len(rootfile) == 0:
ebook.close()
QMessageBox.critical(self, 'Invalid EPUB', 'root not found in '\
'manifest')
return None
content_opf = rootfile[0].get('full-path')
if content_opf is None:
ebook.close()
QMessageBox.critical(self, 'Invalid EPUB', 'content.opf not found')
return None
ebook_info['opf_root'] = posixpath.dirname(content_opf)
tree = etree.parse(ebook.open(content_opf))
manifest = tree.xpath("*[local-name() = 'manifest']")
if len(manifest) == 0:
ebook.close()
QMessageBox.critical(self, 'Invalid EPUB', 'Manifest not found')
return None
manifest = manifest[0]
items = {}
for item in manifest:
item_id = item.get('id')
if item_id is None:
ebook.close()
QMessageBox.critical(self, 'Invalid EPUB', 'Item has no id')
return None
href = item.get('href')
if href is None:
ebook.close()
QMessageBox.critical(self, 'Invalid EPUB', 'Item has no href')
return None
items[item_id] = href
spine = tree.xpath("*[local-name() = 'spine']")
if len(spine) == 0:
ebook.close()
QMessageBox.critical(self, 'Invalid EPUB', 'Spine not found')
return None
spine = spine[0]
ebook_info['chapters'] = []
for itemref in spine:
idref = itemref.get('idref')
if not idref in items:
ebook.close()
QMessageBox.critical(self, 'Invalid EPUB', 'Item in spine '\
'not found in manifest')
return None
ebook_info['chapters'].append(items[idref])
if len(ebook_info['chapters']) == 0:
ebook.close()
QMessageBox.critical(self, 'Invalid EPUB', 'Content not found')
return None
# Table of contents
toc = tree.find("//*[@href='toc.ncx']")
if toc is not None:
toc_path = posixpath.join(ebook_info['opf_root'], 'toc.ncx')
if toc_path in names:
toc_tree = etree.parse(ebook.open(toc_path))
navMap = toc_tree.xpath("//*[local-name() = 'navMap']")
if len(navMap) > 0:
self.tocModel.importNavMap(navMap[0])
temp = QDir.toNativeSeparators(QDesktopServices.storageLocation(
QDesktopServices.TempLocation))
# In case we have two copies of Lectern opening the same book.
filename = '{0}-{1}'.format(splitext(basename(path))[0], uuid4())
ebook_info['temp_path'] = join(temp, filename)
if exists(ebook_info['temp_path']):
rmtree(ebook_info['temp_path'])
ebook.extractall(ebook_info['temp_path'])
ebook.close()
ebook_info['index'] = 0
url = join(ebook_info['temp_path'], ebook_info['opf_root'],
ebook_info['chapters'][0])
self.webView.setUrl(QUrl(url))
if len(ebook_info['chapters']) > 1:
self.nextAction.setEnabled(True)
return ebook_info
def prevChapter(self):
index = self.ebook_info['index']
chapters = self.ebook_info['chapters']
if index > 0:
index -= 1
if index == 0:
self.prevAction.setEnabled(False)
url = join(self.ebook_info['temp_path'],
self.ebook_info['opf_root'], chapters[index])
self.webView.setUrl(QUrl(url))
self.ebook_info['index'] = index
self.nextAction.setEnabled(True)
def nextChapter(self):
index = self.ebook_info['index']
chapters = self.ebook_info['chapters']
if index < len(chapters) - 1:
index += 1
if index == len(chapters) - 1:
self.nextAction.setEnabled(False)
url = join(self.ebook_info['temp_path'],
self.ebook_info['opf_root'], chapters[index])
self.webView.setUrl(QUrl(url))
self.ebook_info['index'] = index
self.prevAction.setEnabled(True)
def closeBook(self):
if self.ebook_info is not None and 'temp_path' in self.ebook_info:
if exists(self.ebook_info['temp_path']):
rmtree(self.ebook_info['temp_path'])
self.ebook_info = None
self.tocView.hide()
self.prevAction.setEnabled(False)
self.nextAction.setEnabled(False)
def closeEvent(self, event = 0):
if(event == 0):
event = PyQt4.QtGui.QCloseEvent()
self.closeBook()
super(Lectern, self).closeEvent(event)
# Suppress "cannot make invalid context current" warnings
sys.exit(0)
def navTo(self, index):
navPoint = index.internalPointer()
href = posixpath.join(self.ebook_info['temp_path'],
self.ebook_info['opf_root'], navPoint.src)
try:
path, anchor = href.split('#')
if path == self.webView.url().path():
self.webView.page().mainFrame().scrollToAnchor(anchor)
return
else:
self.anchor = anchor
except ValueError:
pass
url = QUrl.fromEncoded(href)
self.webView.setUrl(url)
def handleLoad(self, ok):
if self.anchor is not None:
self.webView.page().mainFrame().addToJavaScriptWindowObject("app", self);
self.webView.page().mainFrame().scrollToAnchor(self.anchor)
def handleTOCLoad(self, isEmpty):
if isEmpty:
self.tocView.hide()
else:
self.tocView.show()
