Thanks.  Try again now.  Hopefully it's correct this time (your test is 
a much better unit test than the animation_blit_* examples.

Cheers,
Mike

Darren Dale wrote:
> I'm testing it out on 64-bit linux with this script:
>
> from pylab import *
> from matplotlib.widgets import Cursor
>
> ax=axes()
> cursor = Cursor(ax, useblit=True)
> ax.imshow(array([[0, 1, 2], [3, 4, 5], [6, 7, 8]]), cmap=cm.jet,  
> interpolation='nearest')
> show()
>
> When the mouse pointer enters the axes, the cursor is drawn, blitting occurs, 
> along with wierdness. I'm attaching screenshots, one using the new 
> to_string_argb and one using to_string.
>
> Darren
>
>
>
>
> On Tuesday 06 May 2008 11:43:50 am Michael Droettboom wrote:
>   
>> This is now implemented on the branch and the trunk.  Please let me know
>> how it works for you.  I'm particularly interested in non-Linux and Big
>> Endian platforms (e.g. PPC) as a sanity check.
>>
>> Cheers,
>> Mike
>>
>> Michael Droettboom wrote:
>>     
>>> I'll go ahead and fix this.  It just fell through the cracks.
>>>
>>> Mike
>>>
>>> Darren Dale wrote:
>>>       
>>>> On Monday 05 May 2008 09:24:42 pm G Jones wrote:
>>>>         
>>>>> Hello,
>>>>> Attached is a script that when run from ipython --pylab with your
>>>>> backend setup for 'QtAgg' reproduces a bug I am seeing. If you run the
>>>>> plot, you'll see a line plotted in blue as expected. Then when the
>>>>> same figure is updated by blitting, the line turns red. I tried this
>>>>> with green and it stayed green, but yellow went to cyan. It seems that
>>>>> the byteswapping that is necessary for displaying colors correctly in
>>>>> Qt is happening during a normal plot, but not when blitting. I tried
>>>>> going through the code to determine the problem, I can only guess that
>>>>> it lies somewhere in the FigureCanvasQTAgg.paintEvent, since that's
>>>>> where I see to_ARGB etc.
>>>>> Sorry I couldn't locate the bug precisely, I find it very difficult to
>>>>> thread my way through all the backend classes.
>>>>>           
>>>> I did track down the source of the bug a while back:
>>>> http://sourceforge.net/mailarchive/message.php?msg_id=200803121528.30565
>>>> .darren.dale%40cornell.edu
>>>>
>>>> Mike D. suggested that BufferRegion might need a byte-swapped version of
>>>> to_string(), but unfortunately I am not an experienced c programmer and
>>>> am short of time to try to work my way through it right now. I added a
>>>> bug report at SF.
>>>>
>>>> Darren
>>>>         
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>>
>>>> ------------------------------------------------------------------------
>>>>

-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA


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