dependency_check.py 文件源码

def gtkui_dependency_check():
    '''
    This function verifies that the dependencies that are needed by the GTK user interface are met.
    '''

    print('\tGTK UI dependencies...', end='')

    # Check Gtk
    try:
        import gi
        gi.require_version('Gtk', '3.0')
        from gi.repository import Gtk
        from gi.repository import GObject
        assert Gtk.get_major_version() >= 3
        print(common.console_color('\tOK', 'green'))
    except:
        print(common.console_color("\tD'oh!", 'red'))
        print('You have to install GTK+3 and PyGObject version >= 3.0 to be able to '
                'run the GTK user interface.\n'
                '    - On Debian-based distributions: apt-get install python-gi\n'
                '    - On Mac: brew install pygobject3')
        sys.exit(1)

    # Check GtkSourceView
    try:
        print('\tGtkSourceView3...', end='')
        gi.require_version('GtkSource', '3.0')
        from gi.repository import GtkSource
        print(common.console_color('\tOK', 'green'))
    except:
        print(common.console_color("\tD'oh!", 'red'))
        print('GtkSourceView3 not installed! Install it for your platform:\n'
                '    - On Debian-based distributions: apt-get install gir1.2-gtksource-3.0')
        sys.exit(1)

    # Check PyCairo for GTK+.
    try:
        print('\tPython Cairo bindings...', end='')
        gi.require_version('PangoCairo', '1.0')
        from gi.repository import PangoCairo
        print(common.console_color('\tOK', 'green'))
    except:
        print(common.console_color("\tD'oh!", 'red'))
        print('Python Cairo bindings for GObject not installed! Install them for your platform:\n'
                '    - On Debian-based distributions: apt-get install python-gi-cairo')
        sys.exit(1)