class UI(QtGui.QWidget):
'''
This base class handles all the PyQt front-end.
The application then has the freedom of defining its behaviour by implementing
the event stubs provided without being concerned about Qt api.
It uses a custom layout manager to build the front-end which again hides
Qt api in order to make the code more readable and avoid duplication.
The notion of 'screen' is used here to encapsulate the widgets used in
the different stages of the application, e.g. Downloading: Title, Status, ProgressBar.
We switch between different screens by hiding all of them
and showing only the one we want.
'''
def __init__(self):
super(UI, self).__init__()
self.initUI()
def initUI(self):
# initialise the UI - set title, size, center, set theme, app frames etc
# and finally display it
self.setWindowTitle('Kano OS Burner')
self.resize(APP_WIDTH, APP_HEIGHT)
self.center()
self.setTheme()
self.createScreens()
self.showScreen(self.introScreen)
self.show()
self.onStart()
# @Override
# gets called when the main window is closed - we clean up here
def closeEvent(self, event):
self.onFinish()
def center(self):
# centers the application on the screen
window = self.frameGeometry()
screen_center = QtGui.QDesktopWidget().availableGeometry().center()
window.moveCenter(screen_center)
self.move(window.topLeft())
def setTheme(self):
# the application window only has a vertical container which contains
# exactly 3 items: a header image, a spacer for the active screen, and a footer
self.container = VerticalContainer(self)
self.container.setGeometry(0, 0, APP_WIDTH, APP_HEIGHT)
# changing the background color of the main window
palette = self.palette()
palette.setColor(self.backgroundRole(), QtGui.QColor(255, 132,
42)) # FF842A
self.setPalette(palette)
# adding the 3 items to the application container
self.container.addImage(os.path.join(images_path, 'header.png'))
self.container.addSpacer(CONTAINER_HEIGHT)
footer = self.container.addLabel("Questions? Visit help.kano.me",
objectName=LABEL_CSS_FOOTER)
load_css_for_widget(footer, os.path.join(css_path, 'label.css'))
def createScreens(self):
# the screens will be positioned on the spacer of the main VerticalContainer
self.introScreen = self.createIntroScreen(0, 120)
self.progressScreen = self.createProgressScreen(0, 120)
self.finishScreen = self.createFinishScreen(0, 120)
self.errorScreen = self.createErrorScreen(0, 120)
def createIntroScreen(self, x, y):
container = self.createContainer(x, y)
self.disksComboBox = container.addComboBox(self.onComboBoxClick,
defaultItem='Select device')
self.startButton = container.addButton("BURN!", self.onStartClick)
self.startButton.setEnabled(False) # disable the BURN! button
return container
def createProgressScreen(self, x, y):
container = self.createContainer(x, y)
self.statusTitleLabel = container.addLabel("Status title",
LABEL_CSS_TITLE)
self.statusDescriptionLabel = container.addLabel(
"Status description", LABEL_CSS_DESCRIPTION)
container.addSpacer(5)
self.progressBar = container.addProgressBar(stages=2)
container.addSpacer(20)
return container
def createFinishScreen(self, x, y):
container = self.createContainer(x, y)
self.finishLabel = container.addLabel(
"Kano OS has successfully been burned. Let's go!", LABEL_CSS_TITLE)
self.FinishButton = container.addButton("FINISH", self.onFinishClick)
return container
def createErrorScreen(self, x, y):
container = self.createContainer(x, y)
self.errorTitleLabel = container.addLabel('title', LABEL_CSS_TITLE)
self.errorDescriptionLabel = container.addLabel(
'description', LABEL_CSS_DESCRIPTION)
container.addSpacer(20)
self.FinishButton = container.addButton("TRY AGAIN", self.onRetryClick)
return container
def createContainer(self, x, y):
# this is used when creating the app screens
container = VerticalContainer(self)
container.hide()
container.setGeometry(x, y, APP_WIDTH, CONTAINER_HEIGHT)
return container
def showScreen(self, screen):
self.introScreen.hide()
self.progressScreen.hide()
self.finishScreen.hide()
self.errorScreen.hide()
screen.show()
def showError(self, error):
self.errorTitleLabel.setText(error['title'])
self.errorDescriptionLabel.setText(error['description'])
self.showScreen(self.errorScreen)
def setProgress(self, progress):
self.progressBar.setValue(progress)
def setStatusTitle(self, text):
self.statusTitleLabel.setText(text)
def setStatusDescription(self, text):
self.statusDescriptionLabel.setText(text)
def onStart(self):
pass
def onFinish(self):
pass
def onStartClick(self):
pass
def onRetryClick(self):
pass
def onFinishClick(self):
pass
def onComboBoxClick(self):
pass
class UI(QtGui.QWidget):
'''
This base class handles all the PyQt front-end.
The application then has the freedom of defining its behaviour by implementing
the event stubs provided without being concerned about Qt api.
It uses a custom layout manager to build the front-end which again hides
Qt api in order to make the code more readable and avoid duplication.
The notion of 'screen' is used here to encapsulate the widgets used in
the different stages of the application, e.g. Downloading: Title, Status, ProgressBar.
We switch between different screens by hiding all of them
and showing only the one we want.
'''
def __init__(self):
super(UI, self).__init__()
self.initUI()
def initUI(self):
# initialise the UI - set title, size, center, set theme, app frames etc
# and finally display it
self.setWindowTitle('Kano OS Burner')
self.resize(APP_WIDTH, APP_HEIGHT)
self.center()
self.setTheme()
self.createScreens()
self.showScreen(self.introScreen)
self.show()
self.onStart()
# @Override
# gets called when the main window is closed - we clean up here
def closeEvent(self, event):
self.onFinish()
def center(self):
# centers the application on the screen
window = self.frameGeometry()
screen_center = QtGui.QDesktopWidget().availableGeometry().center()
window.moveCenter(screen_center)
self.move(window.topLeft())
def setTheme(self):
# the application window only has a vertical container which contains
# exactly 3 items: a header image, a spacer for the active screen, and a footer
self.container = VerticalContainer(self)
self.container.setGeometry(0, 0, APP_WIDTH, APP_HEIGHT)
# changing the background color of the main window
palette = self.palette()
palette.setColor(self.backgroundRole(), QtGui.QColor(255, 132, 42)) # FF842A
self.setPalette(palette)
# adding the 3 items to the application container
self.container.addImage(os.path.join(images_path, 'header.png'))
self.container.addSpacer(CONTAINER_HEIGHT)
footer = self.container.addLabel("Questions? Visit help.kano.me", objectName=LABEL_CSS_FOOTER)
load_css_for_widget(footer, os.path.join(css_path, 'label.css'))
def createScreens(self):
# the screens will be positioned on the spacer of the main VerticalContainer
self.introScreen = self.createIntroScreen(0, 120)
self.progressScreen = self.createProgressScreen(0, 120)
self.finishScreen = self.createFinishScreen(0, 120)
self.errorScreen = self.createErrorScreen(0, 120)
def createIntroScreen(self, x, y):
container = self.createContainer(x, y)
self.disksComboBox = container.addComboBox(self.onComboBoxClick, defaultItem='Select device')
self.startButton = container.addButton("BURN!", self.onStartClick)
self.startButton.setEnabled(False) # disable the BURN! button
return container
def createProgressScreen(self, x, y):
container = self.createContainer(x, y)
self.statusTitleLabel = container.addLabel("Status title", LABEL_CSS_TITLE)
self.statusDescriptionLabel = container.addLabel("Status description", LABEL_CSS_DESCRIPTION)
container.addSpacer(5)
self.progressBar = container.addProgressBar(stages=2)
container.addSpacer(20)
return container
def createFinishScreen(self, x, y):
container = self.createContainer(x, y)
self.finishLabel = container.addLabel("Kano OS has successfully been burned. Let's go!", LABEL_CSS_TITLE)
self.FinishButton = container.addButton("FINISH", self.onFinishClick)
return container
def createErrorScreen(self, x, y):
container = self.createContainer(x, y)
self.errorTitleLabel = container.addLabel('title', LABEL_CSS_TITLE)
self.errorDescriptionLabel = container.addLabel('description', LABEL_CSS_DESCRIPTION)
container.addSpacer(20)
self.FinishButton = container.addButton("TRY AGAIN", self.onRetryClick)
return container
def createContainer(self, x, y):
# this is used when creating the app screens
container = VerticalContainer(self)
container.hide()
container.setGeometry(x, y, APP_WIDTH, CONTAINER_HEIGHT)
return container
def showScreen(self, screen):
self.introScreen.hide()
self.progressScreen.hide()
self.finishScreen.hide()
self.errorScreen.hide()
screen.show()
def showError(self, error):
self.errorTitleLabel.setText(error['title'])
self.errorDescriptionLabel.setText(error['description'])
self.showScreen(self.errorScreen)
def setProgress(self, progress):
self.progressBar.setValue(progress)
def setStatusTitle(self, text):
self.statusTitleLabel.setText(text)
def setStatusDescription(self, text):
self.statusDescriptionLabel.setText(text)
def onStart(self):
pass
def onFinish(self):
pass
def onStartClick(self):
pass
def onRetryClick(self):
pass
def onFinishClick(self):
pass
def onComboBoxClick(self):
pass
def createContainer(self, x, y):
# this is used when creating the app screens
container = VerticalContainer(self)
container.hide()
container.setGeometry(x, y, APP_WIDTH, CONTAINER_HEIGHT)
return container
def createContainer(self, x, y):
# this is used when creating the app screens
container = VerticalContainer(self)
container.hide()
container.setGeometry(x, y, APP_WIDTH, CONTAINER_HEIGHT)
return container