Fix mispositioned text with QStaticText and OpenVG graphics system

The OpenVG paint engine, like the OpenGL2 paint engine, supports
caching the untransformed glyphs and transforming them as they are
drawn. Since we would pretransform the positions of the glyphs, the
transformation would be applied twice, thus making the glyphs appear
in the wrong location when the painter had a transform set.

Task-number: QTBUG-13049
Reviewed-by: Gunnar
(cherry picked from commit f3771c5d91995b2beaa73bd3e3c783b76a887b50)

1 files changed, 5 insertions, 2 deletions

diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index b694d9c..be90006 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -5862,10 +5862,13 @@ void QPainter::drawStaticText(const QPointF &topLeftPosition, const QStaticText
         return;
     }
 
-    if (d->extended->type() == QPaintEngine::OpenGL2 && !staticText_d->untransformedCoordinates) {
+    bool paintEngineSupportsTransformations = d->extended->type() == QPaintEngine::OpenGL2
+                                           || d->extended->type() == QPaintEngine::OpenVG;
+
+    if (paintEngineSupportsTransformations && !staticText_d->untransformedCoordinates) {
         staticText_d->untransformedCoordinates = true;
         staticText_d->needsRelayout = true;
-    } else if (d->extended->type() != QPaintEngine::OpenGL2 && staticText_d->untransformedCoordinates) {
+    } else if (!paintEngineSupportsTransformations && staticText_d->untransformedCoordinates) {
         staticText_d->untransformedCoordinates = false;
         staticText_d->needsRelayout = true;
     }