voctogui/lib/toolbar/composition.py



import logging
from gi.repository import Gtk

class CompositionToolbarController(object):
    """ Manages Accelerators and Clicks on the Composition Toolbar-Buttons """

    def __init__(self, drawing_area, win, uibuilder):
        self.log = logging.getLogger('CompositionToolbarController')

        accelerators = Gtk.AccelGroup()
        win.add_accel_group(accelerators)

        composites = [
            'composite-fullscreen',
            'composite-picture-in-picture',
            'composite-side-by-side-equal',
            'composite-side-by-side-preview'
        ]

        for idx, name in enumerate(composites):
            key, mod = Gtk.accelerator_parse('F%u' % (idx+1))
            btn = uibuilder.find_widget_recursive(drawing_area, name)
            btn.set_name(name)

            # Thanks to http://stackoverflow.com/a/19739855/1659732
            btn.get_child().add_accelerator('clicked', accelerators, key, mod, Gtk.AccelFlags.VISIBLE)
            btn.connect('toggled', self.on_btn_toggled)

    def on_btn_toggled(self, btn):
        if not btn.get_active():
            return

        self.log.info("on_btn_toggled: %s", btn.get_name())