macOS: Don't create QMacCGContext when printing

We adopt the context of the print session, so the code is not needed,
and would just produce a warning since QMacCGContext didn't know what
to do about the printer paint device.

Change-Id: I9ac079f5cb5d98022045632592d0e375710eecc3
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>

1 files changed, 12 insertions, 9 deletions

diff --git a/src/plugins/platforms/cocoa/qpaintengine_mac.mm b/src/plugins/platforms/cocoa/qpaintengine_mac.mm
index 00b2267f0d..df71f76644 100644
--- a/src/plugins/platforms/cocoa/qpaintengine_mac.mm
+++ b/src/plugins/platforms/cocoa/qpaintengine_mac.mm
@@ -394,16 +394,19 @@ QCoreGraphicsPaintEngine::begin(QPaintDevice *pdev)
     d->cosmeticPenSize = 1;
     d->current.clipEnabled = false;
     d->pixelSize = QPoint(1,1);
-    QMacCGContext ctx(pdev);
-    d->hd = CGContextRetain(ctx);
-    if (d->hd) {
-        d->saveGraphicsState();
-        d->orig_xform = CGContextGetCTM(d->hd);
-        if (d->shading) {
-            CGShadingRelease(d->shading);
-            d->shading = nullptr;
+
+    if (pdev->devType() != QInternal::Printer) {
+        QMacCGContext ctx(pdev);
+        d->hd = CGContextRetain(ctx);
+        if (d->hd) {
+            d->saveGraphicsState();
+            d->orig_xform = CGContextGetCTM(d->hd);
+            if (d->shading) {
+                CGShadingRelease(d->shading);
+                d->shading = nullptr;
+            }
+            d->setClip(nullptr);  //clear the context's clipping
         }
-        d->setClip(nullptr);  //clear the context's clipping
     }
 
     setActive(true);