def attach(self):
# make a view for the document
self.document_view = DocumentView(parent=self,
document=self.document)
# add it to the document
self.stack.addWidget(self.document_view)
# update actions when relevant objects change
self.document.transport.add_observer(self.update_actions)
self.document.view_scale.add_observer(self.update_actions)
self.update_actions()
class DocumentWindow(QMainWindow):
def __init__(self, app=None):
QMainWindow.__init__(self)
self._app = app
self.setMinimumSize(QSize(600, 400))
self.setWindowTitle('New Document')
# start with no document
self._document = None
self.document_view = None
# make a stack to hold the document
self.stack = QStackedWidget(self)
self.setCentralWidget(self.stack)
# build the menu and toolbar
self._make_menus()
# set up stylesheets for look and feel
self._init_style()
@property
def document(self):
return(self._document)
@document.setter
def document(self, value):
# detach from the old document
if (self._document is not None):
self.detach()
self._document = None
# attach to the new document
if (value is not None):
self._document = value
self.attach()
def detach(self):
self.document.transport.remove_observer(self.update_actions)
self.document.view_scale.remove_observer(self.update_actions)
# remove the document view
if (self.document_view is not None):
view = self.document_view
self.document_view = None
view.destroy()
self.stack.removeWidget(view)
# dump the undo stack and clear the selection
UndoManager.reset()
def attach(self):
# make a view for the document
self.document_view = DocumentView(parent=self,
document=self.document)
# add it to the document
self.stack.addWidget(self.document_view)
# update actions when relevant objects change
self.document.transport.add_observer(self.update_actions)
self.document.view_scale.add_observer(self.update_actions)
self.update_actions()
# build the application menu and toolbar
def _make_menus(self):
menubar = self.menuBar()
# file menu
file_menu = menubar.addMenu('&File')
# new
new_action = QAction(QIcon.fromTheme('document-new'), '&New', self)
new_action.setShortcut('Ctrl+O')
new_action.setStatusTip('Open a document')
new_action.triggered.connect(self.file_new)
file_menu.addAction(new_action)
# open
open_action = QAction(QIcon.fromTheme('document-open'), '&Open', self)
open_action.setShortcut('Ctrl+O')
open_action.setStatusTip('Open a document')
open_action.triggered.connect(self.file_open)
file_menu.addAction(open_action)
# save
save_action = QAction(QIcon.fromTheme('document-save'), '&Save', self)
save_action.setShortcut('Ctrl+S')
save_action.setStatusTip('Save the document')
save_action.triggered.connect(self.file_save)
file_menu.addAction(save_action)
# save as
save_as_action = QAction(QIcon.fromTheme('document-save'), 'Save &As', self)
save_as_action.setStatusTip('Save the document to a different file')
save_as_action.triggered.connect(self.file_save_as)
file_menu.addAction(save_as_action)
# ---
file_menu.addSeparator()
# quit
quit_action = QAction(QIcon.fromTheme('application-exit'), '&Quit', self)
quit_action.setShortcut('Ctrl+Q')
quit_action.setStatusTip('Quit application')
quit_action.triggered.connect(self.close)
file_menu.addAction(quit_action)
# edit menu
edit_menu = menubar.addMenu('&Edit')
# undo
self.undo_action = QAction(icon.get('undo'), '&Undo', self)
self.undo_action.setShortcut('Ctrl+Z')
self.undo_action.setStatusTip('Undo the last action')
self.undo_action.triggered.connect(self.edit_undo)
edit_menu.addAction(self.undo_action)
# redo
self.redo_action = QAction(icon.get('redo'), '&Redo', self)
self.redo_action.setShortcut('Ctrl+Shift+Z')
self.redo_action.setStatusTip('Redo the last action that was undone')
self.redo_action.triggered.connect(self.edit_redo)
edit_menu.addAction(self.redo_action)
# transport menu
transport_menu = menubar.addMenu('&Transport')
# go to start
self.beginning_action = QAction(icon.get('beginning'), 'Jump to &Beginning', self)
self.beginning_action.setShortcut('Home')
self.beginning_action.setStatusTip('Jump back to the beginning of the project')
self.beginning_action.triggered.connect(self.transport_beginning)
transport_menu.addAction(self.beginning_action)
# go to end
self.end_action = QAction(icon.get('ending'), 'Jump to &End', self)
self.end_action.setShortcut('End')
self.end_action.setStatusTip('Jump forward to the end of the project')
self.end_action.triggered.connect(self.transport_end)
transport_menu.addAction(self.end_action)
# back
self.back_action = QAction(icon.get('backward'), 'Bac&k', self)
self.back_action.setShortcut('PgUp')
self.back_action.setStatusTip('Skip backward in time')
self.back_action.triggered.connect(self.transport_back)
transport_menu.addAction(self.back_action)
# forward
self.forward_action = QAction(icon.get('forward'), '&Forward', self)
self.forward_action.setShortcut('PgDown')
self.forward_action.setStatusTip('Skip forward in time')
self.forward_action.triggered.connect(self.transport_forward)
transport_menu.addAction(self.forward_action)
# ---
transport_menu.addSeparator()
# previous mark
self.previous_mark_action = QAction(icon.get('mark_previous'), 'Previous Mark', self)
self.previous_mark_action.setShortcut('Ctrl+PgUp')
self.previous_mark_action.setStatusTip('Skip to the previous marked time')
self.previous_mark_action.triggered.connect(self.transport_previous_mark)
transport_menu.addAction(self.previous_mark_action)
# toggle mark
self.toggle_mark_action = QAction(icon.get('mark_toggle'), 'Toggle Mark', self)
self.toggle_mark_action.setShortcut('Ctrl+\\')
self.toggle_mark_action.setStatusTip('Toggle a mark at the current time')
self.toggle_mark_action.triggered.connect(self.transport_toggle_mark)
transport_menu.addAction(self.toggle_mark_action)
# next mark
self.next_mark_action = QAction(icon.get('mark_next'), 'Next Mark', self)
self.next_mark_action.setShortcut('Ctrl+PgDown')
self.next_mark_action.setStatusTip('Skip to the next marked time')
self.next_mark_action.triggered.connect(self.transport_next_mark)
transport_menu.addAction(self.next_mark_action)
# cycle
self.toggle_cycle_action = QAction(icon.get('cycle'), 'Cycle', self)
self.toggle_cycle_action.setShortcut('Ctrl+L')
self.toggle_cycle_action.setStatusTip('Toggle cycling playback mode')
self.toggle_cycle_action.setCheckable(True)
self.toggle_cycle_action.toggled.connect(self.transport_toggle_cycle)
transport_menu.addAction(self.toggle_cycle_action)
# ---
transport_menu.addSeparator()
# stop
self.stop_action = QAction(icon.get('stop'), '&Stop', self)
self.stop_action.setStatusTip('Stop playback or recording')
self.stop_action.triggered.connect(self.transport_stop)
transport_menu.addAction(self.stop_action)
# play
self.play_action = QAction(icon.get('play'), '&Play', self)
self.play_action.setStatusTip('Start playback')
self.play_action.triggered.connect(self.transport_play)
transport_menu.addAction(self.play_action)
# record
self.record_action = QAction(icon.get('record'), '&Record', self)
self.record_action.setStatusTip('Start recording')
self.record_action.triggered.connect(self.transport_record)
transport_menu.addAction(self.record_action)
# ---
transport_menu.addSeparator()
# zoom in
self.zoom_in_action = QAction(icon.get('zoom_in'), 'Zoom &In', self)
self.zoom_in_action.setShortcut('Ctrl+Shift+Plus')
self.zoom_in_action.setStatusTip('Zoom in')
self.zoom_in_action.triggered.connect(self.transport_zoom_in)
transport_menu.addAction(self.zoom_in_action)
# zoom out
self.zoom_out_action = QAction(icon.get('zoom_out'), 'Zoom &Out', self)
self.zoom_out_action.setShortcut('Ctrl+Shift+Minus')
self.zoom_out_action.setStatusTip('Zoom out')
self.zoom_out_action.triggered.connect(self.transport_zoom_out)
transport_menu.addAction(self.zoom_out_action)
# toolbar
self.toolbar = self.addToolBar('Main')
self.toolbar.addAction(self.undo_action)
self.toolbar.addAction(self.redo_action)
self.toolbar.addSeparator()
self.toolbar.addAction(self.beginning_action)
self.toolbar.addAction(self.back_action)
self.toolbar.addAction(self.forward_action)
self.toolbar.addAction(self.end_action)
self.toolbar.addSeparator()
self.toolbar.addAction(self.stop_action)
self.toolbar.addAction(self.play_action)
self.toolbar.addAction(self.record_action)
self.toolbar.addSeparator()
self.toolbar.addAction(self.zoom_out_action)
self.toolbar.addAction(self.zoom_in_action)
# give actions their initial states
UndoManager.add_observer(self.update_actions)
self.update_actions()
# start a new document
def file_new(self):
self.document = doc.Document()
# open an existing document
def file_open(self):
(path, group) = QFileDialog.getOpenFileName(self,
"Open Project", "~", "Project Files (*.jdp *.yml);;All Files (*.*)")
document = doc.Document.get_from_path(path)
if (document is not None):
self.document = document
# save the document
def file_save(self):
if (not self.document): return
if (not self.document.path):
self.file_save_as()
else:
self.document.save()
# save the document with a different file name
def file_save_as(self):
(path, group) = QFileDialog.getSaveFileName(self,
"Save Project", "~", "Project Files (*.jdp *.yml);;All Files (*.*)")
if (len(path) == 0): return
self.document.path = path
self.document.save()
# undo
def edit_undo(self):
UndoManager.undo()
# redo
def edit_redo(self):
UndoManager.redo()
# transport actions
def transport_beginning(self):
if (self.document):
self.document.transport.go_to_beginning()
def transport_end(self):
if (self.document):
self.document.transport.go_to_end()
def transport_back(self):
if (self.document):
self.document.transport.skip_back()
def transport_forward(self):
if (self.document):
self.document.transport.skip_forward()
def transport_previous_mark(self):
if (self.document):
self.document.transport.previous_mark()
def transport_toggle_mark(self):
if (self.document):
self.document.transport.toggle_mark()
def transport_next_mark(self):
if (self.document):
self.document.transport.next_mark()
def transport_toggle_cycle(self, toggled):
if (self.document):
self.document.transport.cycling = toggled
def transport_play(self):
if (self.document):
self.document.transport.play()
def transport_record(self):
if (self.document):
self.document.transport.record()
def transport_stop(self):
if (self.document):
self.document.transport.stop()
def transport_zoom_in(self):
if (self.document_view):
self.document_view.zoom_in()
def transport_zoom_out(self):
if (self.document):
self.document_view.zoom_out()
# reflect changes to models in the action buttons
def update_actions(self):
# disable undo/redo at the ends of the stack
self.undo_action.setEnabled(UndoManager.can_undo)
self.redo_action.setEnabled(UndoManager.can_redo)
# only allow transport actions if we have a document
self.beginning_action.setEnabled(self.document is not None)
self.end_action.setEnabled(self.document is not None)
self.back_action.setEnabled(self.document is not None)
self.forward_action.setEnabled(self.document is not None)
self.stop_action.setEnabled(self.document is not None)
self.play_action.setEnabled(self.document is not None)
self.record_action.setEnabled(self.document is not None)
# check and uncheck the cycling item when cycling changes
self.toggle_cycle_action.setChecked((self.document is not None) and
(self.document.transport.cycling))
# disable zoom actions at the outer limits
self.zoom_in_action.setEnabled(
(self.document_view is not None) and (self.document_view.can_zoom_in))
self.zoom_out_action.setEnabled(
(self.document_view is not None) and (self.document_view.can_zoom_out))
# set up stylesheets for the app
def _init_style(self):
# style scrollbars to be simple lozenges without buttons
self._app.setStyleSheet('''
QScrollBar:horizontal { height: 12px; }
QScrollBar::handle:horizontal { min-width: 24px; }
QScrollBar:vertical { width: 12px; }
QScrollBar::handle:vertical { min-height: 24px; }
QScrollBar::add-line:horizontal, QScrollBar::sub-line:horizontal {
width: 0;
}
QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {
height: 0;
}
QScrollBar {
background: transparent;
padding: 2px;
}
QScrollBar::handle {
background: rgba(0, 0, 0, 64);
border-radius: 4px;
}
QScrollBar::handle:hover {
background: rgba(0, 0, 0, 128);
}
QScrollBar::add-page, QScrollBar::sub-page {
background: transparent;
}
''')