Optimize QStaticText for one line strings

QTextLayout takes a lot of memory. We can get a bigger speed-up and
a more reasonable memory consumption by only supporting the single
line static texts and caching the text items. We need to copy some
structs from the text engine, since this is on the stack.

1 files changed, 5 insertions, 2 deletions

diff --git a/src/gui/text/qstatictext_p.h b/src/gui/text/qstatictext_p.h
index 773971a..aaaf300 100644
--- a/src/gui/text/qstatictext_p.h
+++ b/src/gui/text/qstatictext_p.h
@@ -67,9 +67,12 @@ public:
 
     void init();
 
-    QTextLayout *textLayout;
-    QSizeF size;
     QAtomicInt ref;
+    QVector<QTextItemInt *> items;
+    QString text;
+    QFont font;
+    char *glyphLayoutMemory;
+    unsigned short *logClusterMemory;
     
     static QStaticTextPrivate *get(const QStaticText *q);
 };