Bug 938 – QTemporaryFile JPEG problem

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Bug 938 - QTemporaryFile JPEG problem

Summary:

QTemporaryFile JPEG problem

Status:	CLOSED FIXED

Product:	PySide
Classification:	Unclassified
Component:	QtCore
Version:	1.0.4
Platform:	PC All

Importance:	P3 normal
Assigned To:	Hugo Parente Lima

URL:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2011-07-19 14:53 EEST by Lee Smith
Modified:	2011-07-22 22:12 EEST (History)
CC List:	8 users (show)

See Also:

Attachments
Test program (510 bytes, text/x-python) 2011-07-19 14:53 EEST, Lee Smith	Details
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Description Lee Smith 2011-07-19 14:53:14 EEST

Created attachment 380 [details]
Test program

When displaying a jpeg retrieved from a url using a QTemporaryFile and QLabel,
I get this message multiple times and no image shown. 

"Corrupt JPEG data: 1 extraneous bytes before marker 0xd9
JPEG datastream contains no image"

It works if I use QTemporaryFile from PyQt4 so I assume it's a bug with
QTemporaryFile.

I've attached a program which shows the problem.

Comment 1 Lee Smith 2011-07-19 16:40:54 EEST

Actually this problem is not specific to the jpeg format since gif, png, and
bmp images also fail to display using the test program.

.png yields the errors "libpng error: Read Error"

.gif and .bmp don't produce any error messages, they just don't show up in the
window.

Comment 2 Hugo Parente Lima 2011-07-20 17:10:32 EEST

The write method is stopping on first null byte.

As workaround you can use:

img.write(QByteArray(response.read()))

Thanks for reporting.

Comment 3 Hugo Parente Lima 2011-07-22 16:50:13 EEST

Fixed in commit:

pyside/3c2505a6254e9446c06dcbc27e5b9d0d8b4316bf

Comment 4 renato filho 2011-07-22 22:12:49 EEST

release 1.0.5