[Qt-interest] [webkit] QString to style sheet

[Daniel Vérité]

  Hi,

This is a request for help or comments about getting a QString used as 
a style sheet in webkit.
I need the user to choose a default font with a QFontDialog, and since 
the QtWebkit API doesn't have a setFont(QFont), I'm converting QFont 
properties to a CSS string in memory:
body { font-size: ...; font-family: ...; font-weight:...; 
font-style:...; }
Now QWebPage accepts a user-supplied default style sheet, but it has to 
be an URL, so I'm using a dummy URL: QUrl("style://internal.css") that 
is caught by a custom network manager and for which the CSS string is 
returned with a QNetworkReply-derived class. All this stuff to return 
just a string but I haven't found a simpler way.
Ready-to-run minimal code is attached.

My question is: is that method correct? Because it appears to work for 
me but not for another guy, despite us both using Qt-4.4.3 under linux, 
so I'm wondering if there's something flawed in the concept or 
implementation that would make it not guaranteed to work consistently.
By not working, I mean that the renderer appears to ignore the style 
sheet.

Besides the attached code that uses a hardcoded CSS string, the 
conversion from any QFont to CSS is pretty simple:

{
  QString s="body {";
  if (!font.family().isEmpty()) {
    s.append("font-family:\"" + font.family() + "\";");
  }
  if (font.pointSize()>1) {
    s.append(QString("font-size:%1 pt;").arg(font.pointSize()));
  }
  else if (font.pixelSize()>1) {
    s.append(QString("font-size:%1 px;").arg(font.pixelSize()));
  }
  if (font.bold()) {
    s.append("font-weight: bold;");
  }
  if (font.style()==QFont::StyleItalic) {
    s.append("font-style: italic;");
  }
  else if (font.style()==QFont::StyleOblique) {
    s.append("font-style: oblique;");
  }
  s.append("}\n");
}

Best regards,
-- 
 Daniel
 PostgreSQL-powered mail user agent and storage: 
http://www.manitou-mail.org 
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