TextEdit: Better support of QTextTable and inline images

Fix some issues with incremental updates found while
playing with the Quick Controls textedit demo.

 -Grouping text blocks into a single text node is fine as
long as it doesn't cross the boundary of a child frame
(e.g. a table), otherwise all that node logic collapses.

 -Text tables are hard to split in a sensible way, ensure
we treat them as one text node for the sake of simplicity.

 -Inline images can cause several text nodes to have the
same apparent start position. Beef up the rewinding logic
in markDirtyNodesForRange.

Change-Id: Ib4518bcd9303035fa00d9f4b16da7ca6c88e2313
Reviewed-by: Caroline Chao <caroline.chao@digia.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/quick/items/qquicktextnode_p.h b/src/quick/items/qquicktextnode_p.h
index 2031669639..f5de6cc9b6 100644
--- a/src/quick/items/qquicktextnode_p.h
+++ b/src/quick/items/qquicktextnode_p.h
@@ -118,6 +118,7 @@ private:
     QScopedPointer<QQuickTextNodeEngine> m_engine;
 
     friend class QQuickTextEdit;
+    friend class QQuickTextEditPrivate;
 };
 
 QT_END_NAMESPACE