SettingsWidgets.py 文件源码

def update_icon_preview_cb(self, dialog, preview):
        # Different widths make the dialog look really crappy as it resizes -
        # constrain the width and adjust the height to keep perspective.
        filename = dialog.get_preview_filename()
        if filename is not None:
            if os.path.isfile(filename):
                try:
                    pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(filename, 320, -1)
                    if pixbuf is not None:
                        preview.set_from_pixbuf(pixbuf)
                        self.frame.show()
                        return
                except GLib.Error as e:
                    print("Unable to generate preview for file '%s' - %s\n", filename, e.message)

        preview.clear()
        self.frame.hide()