stars.py 文件源码

def create_normal_surfaces(self,
                    context, vis_width, vis_height, star_width):

        rgba1 = context.get_border_color(Gtk.StateFlags.NORMAL)
        rgba0 = context.get_color(Gtk.StateFlags.ACTIVE)

        lin = cairo.LinearGradient(0, 0, 0, vis_height)
        lin.add_color_stop_rgb(0, rgba0.red, rgba0.green, rgba0.blue)
        lin.add_color_stop_rgb(1, rgba1.red, rgba1.green, rgba1.blue)

        # paint full
        full_surf = cairo.ImageSurface(
                        cairo.FORMAT_ARGB32, vis_width, vis_height)

        cr = cairo.Context(full_surf)
        cr.set_source(lin)
        cr.set_line_width(1)
        if self.rounded:
            cr.set_line_join(cairo.LINE_CAP_ROUND)

        for i in range(self.n_stars):
            x = 1 + i * (star_width + self.spacing)
            self.layout(cr, x + 1, 1, star_width - 2, vis_height - 2)
            cr.stroke_preserve()
            cr.fill()

        del cr

        # paint empty
        empty_surf = cairo.ImageSurface(
                        cairo.FORMAT_ARGB32, vis_width, vis_height)

        cr = cairo.Context(empty_surf)
        cr.set_source(lin)
        cr.set_line_width(1)
        if self.rounded:
            cr.set_line_join(cairo.LINE_CAP_ROUND)

        for i in range(self.n_stars):
            x = 1 + i * (star_width + self.spacing)
            self.layout(cr, x + 1, 1, star_width - 2, vis_height - 2)
            cr.stroke()

        del cr

        return full_surf, empty_surf