Merge remote branch 'origin/4.7' into qt-master-from-4.7

Conflicts:
	configure
	src/gui/graphicsview/qgraphicslayout.cpp
	src/gui/text/qfontengine_s60.cpp
	src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
	src/opengl/qwindowsurface_gl.cpp
	src/s60installs/bwins/QtGuiu.def
	src/s60installs/eabi/QtGuiu.def
	tests/auto/qsortfilterproxymodel/tst_qsortfilterproxymodel.cpp

1 files changed, 20 insertions, 16 deletions

diff --git a/src/gui/painting/qgrayraster.c b/src/gui/painting/qgrayraster.c
index 536f265f14..c72885f9ed 100644
--- a/src/gui/painting/qgrayraster.c
+++ b/src/gui/painting/qgrayraster.c
@@ -952,49 +952,53 @@
                               const QT_FT_Vector*  control2,
                               const QT_FT_Vector*  to )
   {
+    TPos        dx, dy, da, db;
     int         top, level;
     int*        levels;
     QT_FT_Vector*  arc;
-    int         mid_x = ( DOWNSCALE( ras.x ) + to->x +
-                          3 * (control1->x + control2->x ) ) / 8;
-    int         mid_y = ( DOWNSCALE( ras.y ) + to->y +
-                          3 * (control1->y + control2->y ) ) / 8;
-    TPos        dx = DOWNSCALE( ras.x ) + to->x - ( mid_x << 1 );
-    TPos        dy = DOWNSCALE( ras.y ) + to->y - ( mid_y << 1 );
 
 
+    dx = DOWNSCALE( ras.x ) + to->x - ( control1->x << 1 );
     if ( dx < 0 )
       dx = -dx;
+    dy = DOWNSCALE( ras.y ) + to->y - ( control1->y << 1 );
     if ( dy < 0 )
       dy = -dy;
     if ( dx < dy )
       dx = dy;
+    da = dx;
+
+    dx = DOWNSCALE( ras.x ) + to->x - 3 * ( control1->x + control2->x );
+    if ( dx < 0 )
+      dx = -dx;
+    dy = DOWNSCALE( ras.y ) + to->y - 3 * ( control1->y + control2->y );
+    if ( dy < 0 )
+      dy = -dy;
+    if ( dx < dy )
+      dx = dy;
+    db = dx;
 
     level = 1;
-    dx /= ras.cubic_level;
-    while ( dx > 0 )
+    da    = da / ras.cubic_level;
+    db    = db / ras.conic_level;
+    while ( da > 0 || db > 0 )
     {
-      dx >>= 2;
+      da >>= 2;
+      db >>= 3;
       level++;
     }
 
     if ( level <= 1 )
     {
-      TPos   to_x, to_y;
+      TPos   to_x, to_y, mid_x, mid_y;
 
 
       to_x  = UPSCALE( to->x );
       to_y  = UPSCALE( to->y );
-
-      /* Recalculation of midpoint is needed only if */
-      /* UPSCALE and DOWNSCALE have any effect.      */
-
-#if ( PIXEL_BITS != 6 )
       mid_x = ( ras.x + to_x +
                 3 * UPSCALE( control1->x + control2->x ) ) / 8;
       mid_y = ( ras.y + to_y +
                 3 * UPSCALE( control1->y + control2->y ) ) / 8;
-#endif
 
       gray_render_line( RAS_VAR_ mid_x, mid_y );
       gray_render_line( RAS_VAR_ to_x, to_y );