traceback while changing HTMLLabel color

[ccanepa]

with this pure pyglet script

# file _pyglet_html_label.py
from __future__ import division, print_function, unicode_literals

import pyglet

window = pyglet.window.Window(640, 480)

x0 = window.width // 2
y0 = window.height // 2

t=0.0
color = (255, 255, 0, 255)

hlabel = pyglet.text.HTMLLabel('aloha',
                          x=x0, y=y0,
                          anchor_x='center')

@window.event
def on_draw():
    window.clear()
    hlabel.draw()

def update(dt):
    global t
    opacity = int(abs(255 - t % 511))
    hlabel.color = tuple(color[:3]) + (opacity,)
    t += dt

pyglet.clock.schedule_interval(update, 1 / 30.)
pyglet.app.run()

got crash with traceback

(py-cocos) E:\dev\cocos2019\test>python _pyglet_html_label.py
Traceback (most recent call last):
  File "_pyglet_html_label.py", line 29, in <module>
    pyglet.app.run()
  File "e:\dev\pyglet-2019\pyglet\app\__init__.py", line 144, in run
    event_loop.run()
  File "e:\dev\pyglet-2019\pyglet\app\base.py", line 175, in run
    self._run()
  File "e:\dev\pyglet-2019\pyglet\app\base.py", line 187, in _run
    timeout = self.idle()
  File "e:\dev\pyglet-2019\pyglet\app\base.py", line 308, in idle
    redraw_all = self.clock.call_scheduled_functions(dt)
  File "e:\dev\pyglet-2019\pyglet\clock.py", line 327, in call_scheduled_functio
ns
    item.func(now - item.last_ts, *item.args, **item.kwargs)
  File "_pyglet_html_label.py", line 25, in update
    hlabel.color = tuple(color[:3]) + (opacity,)
  File "e:\dev\pyglet-2019\pyglet\text\__init__.py", line 309, in color
    {'color': color})
  File "e:\dev\pyglet-2019\pyglet\text\document.py", line 512, in set_style
    self.dispatch_event('on_style_text', start, end, attributes)
  File "e:\dev\pyglet-2019\pyglet\event.py", line 400, in dispatch_event
    if handler(*args):
  File "e:\dev\pyglet-2019\pyglet\text\layout.py", line 1062, in on_style_text
    self._update_color()
  File "e:\dev\pyglet-2019\pyglet\text\layout.py", line 977, in _update_color
    for start, end, color in colors_iter.ranges(0, colors_iter.length):
AttributeError: 'RunIterator' object has no attribute 'length'

win7 64.bits, python 3.7

pyglet:
commit 58dfdb6 master github
Author: Benjamin Moran
Date: Fri Aug 9 09:43:50 2019 +0900

found this while testing cocos for next release, los-cocos/cocos#322

edit1: deleted reference to cocos version, irrelevant to this bugdemo.

[benmoran56]

Fixed in master. To see the results, you need to update dt a little faster: t += dt * 100

[ccanepa]

Thanks Ben!

[benmoran56]

Glad to help, and thanks for reporting it. I just pushed out 1.4.2 this morning. Unfortunately this fix did not go in, but we need to do another release soon anyway. There are a few bugs to solve first :)