Bug 72605 – [Qt] QComboBox and CSS conflicts

• Status: RESOLVED
• Resolution: INVALID
• Component: New Bugs

If a Qt application is setting the QComboBox font size to 10 pt and if the
application is also loading external webpages which have the <select>
objects that have a style attributed to them the the popup gets wrong
font. For instance:
<style type="text/css">
select {
font-size:7pt;
}
</style>

In this case the WebKit select combobox gets the 7 pt font (as it
should), but the popup gets the 10 pt font.

What happens is that it first gets set with the css font and then when
it gets shown the widget gets polished which means it gets the font form
the stylesheet.

Please, find an application that reproduces this issue attached.

This patch attached corrects the error:
---
a/src/3rdparty/webkit/WebKit/qt/WebCoreSupport/QtFallbackWebPopup.cpp
+++
b/src/3rdparty/webkit/WebKit/qt/WebCoreSupport/QtFallbackWebPopup.cpp
@@ -137,7 +137,8 @@ void QtFallbackWebPopup::show()
                                rect.width(),
m_combo->sizeHint().height()));
     }
-
+    m_combo->ensurePolished();
+    m_combo->setFont(font());
     QMouseEvent event(QEvent::MouseButtonPress, QCursor::pos(),
Qt::LeftButton,
                       Qt::LeftButton, Qt::NoModifier);
     QCoreApplication::sendEvent(m_combo, &event);

Created attachment 115576 [details]
Example to reproduce the problem

[Jocelyn Turcotte]

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