Fixed artifacts when drawing same line with different clips.

Expanding on the change fixing QTBUG-24762 with the realization that any
line needs to be drawn in a consistent way regardless of system or
painter clip, not just dashed lines.

Task-number: QTBUG-25036
Change-Id: Ief7ef19cc92c52e7d792500a581a072ba032767e
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
(cherry picked from commit c7191d3e214b9cdb17ec383b61f7e21e784f80d0)

1 files changed, 6 insertions, 6 deletions

diff --git a/src/gui/painting/qcosmeticstroker.cpp b/src/gui/painting/qcosmeticstroker.cpp
index 192b021634..9fddaed168 100644
--- a/src/gui/painting/qcosmeticstroker.cpp
+++ b/src/gui/painting/qcosmeticstroker.cpp
@@ -290,14 +290,14 @@ void QCosmeticStroker::setup()
         ppl = buffer->bytesPerLine()>>2;
     }
 
-    // dashes are sensitive to clips, so we need to clip consistently when painting to the same device
-    QRect clipRect = strokeSelection & Dashed ? deviceRect : clip;
+    // line drawing produces different results with different clips, so
+    // we need to clip consistently when painting to the same device
 
     // setup FP clip bounds
-    xmin = clipRect.left() - 1;
-    xmax = clipRect.right() + 2;
-    ymin = clipRect.top() - 1;
-    ymax = clipRect.bottom() + 2;
+    xmin = deviceRect.left() - 1;
+    xmax = deviceRect.right() + 2;
+    ymin = deviceRect.top() - 1;
+    ymax = deviceRect.bottom() + 2;
 
     lastPixel.x = -1;
 }