Implemeting, exporting and autotesting QFont::lastResortFont()

An implementation of QFont::lastResortFont() is still(!) missing
in Qt 4.7.0. I only became aware of QTBUG-6921, lately.

This patch...
1) implements QFont::lastResortFont() in qfont_s60.cpp by first
trying to get the lastResortFamily() and then falling back to a
hardcoded font.

2) updates the .def files with one additional entry

3) adds an autotest which verifies that lastResortFamily() does
return a non-empty string. In the firt place, that autotest makes
sure that lastResortFamily() is implemented and exported, so that
something like this issue will not go unnoticed in the next
Qt port.

Task-number: QTBUG-6921
Reviewed-by: Eskil

1 files changed, 10 insertions, 0 deletions

diff --git a/src/gui/text/qfont_s60.cpp b/src/gui/text/qfont_s60.cpp
index d39f30a..80a3bb2 100644
--- a/src/gui/text/qfont_s60.cpp
+++ b/src/gui/text/qfont_s60.cpp
@@ -57,6 +57,16 @@ Q_GLOBAL_STATIC_WITH_INITIALIZER(QStringList, fontFamiliesOnFontServer, {
 });
 #endif // QT_NO_FREETYPE
 
+QString QFont::lastResortFont() const
+{
+    // Symbian's font Api does not distinguish between font and family.
+    // Therefore we try to get a "Family" first, then fall back to "Sans".
+    static QString font = lastResortFamily();
+    if (font.isEmpty())
+        font = QLatin1String("Sans");
+    return font;
+}
+
 QString QFont::lastResortFamily() const
 {
 #ifdef QT_NO_FREETYPE