Converting from double to qreal in gui

There were a number of places in QtGui where doubles were used in
expressions due to the use of floating point constants in the
code. Many of these constants are now constructed as qreal, removing
the use of double operations where unneeded.

These changes have been limited to constants that have exactly the same
value whether double or float, to ensure that precision errors are not
introduced.

This should not affect any of the desktop platforms where qreal is
double. On Symbian, where qreal is float, appropriate autotests have
been run.

Task-number: QTBUG-4894
Reviewed-by: Sami Merila

1 files changed, 6 insertions, 6 deletions

diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index a3378de..f527bcf 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -5908,12 +5908,12 @@ bool qt_xForm_helper(const QTransform &trueMat, int xoffset, int type, int depth
                      uchar *dptr, int dbpl, int p_inc, int dHeight,
                      const uchar *sptr, int sbpl, int sWidth, int sHeight)
 {
-    int m11 = int(trueMat.m11()*4096.0);
-    int m12 = int(trueMat.m12()*4096.0);
-    int m21 = int(trueMat.m21()*4096.0);
-    int m22 = int(trueMat.m22()*4096.0);
-    int dx  = qRound(trueMat.dx()*4096.0);
-    int dy  = qRound(trueMat.dy()*4096.0);
+    int m11 = int(trueMat.m11()*qreal(4096.0));
+    int m12 = int(trueMat.m12()*qreal(4096.0));
+    int m21 = int(trueMat.m21()*qreal(4096.0));
+    int m22 = int(trueMat.m22()*qreal(4096.0));
+    int dx  = qRound(trueMat.dx()*qreal(4096.0));
+    int dy  = qRound(trueMat.dy()*qreal(4096.0));
 
     int m21ydx = dx + (xoffset<<16) + (m11 + m21) / 2;
     int m22ydy = dy + (m12 + m22) / 2;