grid.py 文件源码

def layout(self, width):
        surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 1, 1)
        ctx = cairo.Context(surface)
        max_text_height = ctx.text_extents("ABCDEFGHIJKLMNOPQRSTUVWXYZabcedefghijklmnopqrstuvwxyz0123456789")[3]

        left_width = 0
        right_width = 0
        left_n_lines = 0
        range_n = 0
        eventint_n = 0
        eventstr_n = 0
        for timeline in self.timelines.get_all():
            left_n_lines += 1
            t_width = ctx.text_extents(timeline.name)[2]
            left_width = max(left_width, t_width)
            for rang in timeline.get_ranges():
                t_width = ctx.text_extents(rang.name)[2]
                right_width = max(right_width, t_width)
                range_n += 1
            for events_int in timeline.get_events_int():
                t_width = ctx.text_extents(events_int.name)[2]
                right_width = max(right_width, t_width)
                eventint_n += 1
            for events_str in timeline.get_events_str():
                t_width = ctx.text_extents(events_str.name)[2]
                right_width = max(right_width, t_width)
                eventstr_n += 1

        left_height = left_n_lines * max_text_height + (left_n_lines - 1) * self.padding
        right_n_lines = range_n + eventint_n + eventstr_n
        right_height = (right_n_lines - 1) * self.padding + right_n_lines * max_text_height
        right_data_height = (eventint_n + eventstr_n) * (max_text_height + 5) + range_n * 10
        right_data_height += (right_n_lines - 1) * self.padding

        height = max(left_height, right_height)
        height = max(height, right_data_height)

        self.left_width = left_width
        self.right_width = right_width
        self.max_text_height = max_text_height
        self.width = width
        self.height = height + self.padding