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RESOLVED INVALID
29570
[Qt] External font loading in Qt Webkit
https://bugs.webkit.org/show_bug.cgi?id=29570
Summary
[Qt] External font loading in Qt Webkit
Tor Arne Vestbø
Reported
2009-09-21 08:32:49 PDT
This bug report originated from Nokia internal issue QT-1762 --- Comments --- Product Qt Function webkit Version 4.5.2 Platform Windows Vista Platform details The bug appears on Vista x64 and Ubuntu 9.04. Probably on other platforms too. Compilers MSVC Compiler details Tested with Visual Studio 2008 and GCC 4.3.3. Subject External font loading in Qt Webkit Steps to reproduce / test case [This has been posted to the qt-interest mailing list on 19. July 2009 18:13] I believe I have found a bug in Qt. It pertains to external font loading with the “@font-face” CSS property. Two issues are present: 1. If we load both the regular and the italic versions of a font face from different font files and then specify that an HTML element should use that font face, the regular version of the font is displayed, but not the italic. Example CSS code: @font-face { font-family: "Fontin"; src: url(Fontin-Regular.ttf); } @font-face { font-family: "Fontin"; font-style: italic; src: url(Fontin-Italic.ttf); } body { font-family: "Fontin" } The regular style is displayed correctly, the italic isn’t. Same thing happens for bold versions and different font families/font files. Needless to say, this works in Firefox 3.5 and Safari 4.0.2. 2. My application uses the “contentEditable” property to enable editing of the loaded HTML file. If the user tries to make some regular text italic with “CTRL + I” (or invokes the command in some other way), the text isn’t displayed italic (because of issue #1, naturally). But if he then closes the application, it crashes with a segfault. I have also tried loading the fonts by hand with “QFontDatabase::addApplicationFont(const QString & fileName)” and it made no difference for either issue. I am providing a small test application that demonstrates issue #1. But for reasons that are beyond my comprehension, I am unable to replicate issue #2 in a test application, although it is very easy to replicate in my program. Make sure that the font files are in the same folder as your executable, and that they are not installed in the system. I do have the next best thing for issue #2: start the “Browser” demo application that comes with Qt and open the “test.xhtml” file that comes with my test app for issue #1. Even without setting “contentEditable” to true and making some text italic by hand, it will crash on exit with a segfault. It will also display issue #1, that is, it won’t display italic text as italic. I have analyzed the stack trace for the crash in the “Browser” application and in my own, and they are practically identical: it’s the same bug, although it’s invoked in slightly different ways. I have included the stack trace for my application for reference. This has all been tested on Vista x64 and Ubuntu 9.04. The Qt versions used were 4.5.2 and 4.5.0, respectively. Sincerely, [On the mailing list it's been pointed out that I should use CSS styling for the italic text. My application uses them exclusively. The example uses "<i>Italic text.</i>" for the sake of brevity. The bug doesn't care. Feel free to set the text italic with a CSS style and see the application crash in the absolutely same way.]
Attachments
Test case (Needs font files, see comment)
(515 bytes, text/html)
2010-02-16 06:29 PST
,
Jocelyn Turcotte
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Jocelyn Turcotte
Comment 1
2010-02-16 06:29:42 PST
Created
attachment 48813
[details]
Test case (Needs font files, see comment) To reproduce: - download the html file on you disk - download the Fontin-Regular.ttf and Fontin-Italic.ttf from the following page in the same directory:
http://www.josbuivenga.demon.nl/fontin.html
Reproduced in trunk. The description also talks about a crash while editing such a page within QtWebKit.
Robert Hogan
Comment 2
2010-12-20 12:21:21 PST
Is this a duplicate of
https://bugs.webkit.org/show_bug.cgi?id=29433
?
Strahinja Markovic
Comment 3
2010-12-21 05:35:37 PST
This is a duplicate of
https://bugs.webkit.org/show_bug.cgi?id=29433
I wrote the original report on the old Nokia tracker almost two years ago.
Jocelyn Turcotte
Comment 4
2014-02-03 03:13:04 PST
=== Bulk closing of Qt bugs === If you believe that this bug report is still relevant for a non-Qt port of webkit.org, please re-open it and remove [Qt] from the summary. If you believe that this is still an important QtWebKit bug, please fill a new report at
https://bugreports.qt-project.org
and add a link to this issue. See
http://qt-project.org/wiki/ReportingBugsInQt
for additional guidelines.
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