Add QPlatformSurface::screen() const

Classes inheriting QPlatformSurface need to return the QPlatformScreen
to allow the platform integration plugin to know information about the
used screen by the surface.

QPlatformSurface and QPlatformWindow had the same function defined, but
it was not possible to call it without casting the QPlatformSurface
pointer.

Change-Id: I1f93fe7c13ebbc51769677038edeca4de5db0024
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/plugins/platforms/qnx/qqnxrasterbackingstore.cpp b/src/plugins/platforms/qnx/qqnxrasterbackingstore.cpp
index a758bdf7f4..dd7f907ee0 100644
--- a/src/plugins/platforms/qnx/qqnxrasterbackingstore.cpp
+++ b/src/plugins/platforms/qnx/qqnxrasterbackingstore.cpp
@@ -139,6 +139,7 @@ void QQnxRasterBackingStore::beginPaint(const QRegion &region)
     platformWindow()->adjustBufferSize();
 
     if (window()->requestedFormat().alphaBufferSize() > 0) {
+        auto platformScreen = static_cast<QQnxScreen *>(platformWindow()->screen());
         for (const QRect &r : region) {
             // Clear transparent regions
             const int bg[] = {
@@ -149,11 +150,11 @@ void QQnxRasterBackingStore::beginPaint(const QRegion &region)
                                SCREEN_BLIT_DESTINATION_HEIGHT, r.height(),
                                SCREEN_BLIT_END
                               };
-            Q_SCREEN_CHECKERROR(screen_fill(platformWindow()->screen()->nativeContext(),
+            Q_SCREEN_CHECKERROR(screen_fill(platformScreen->nativeContext(),
                                             platformWindow()->renderBuffer().nativeBuffer(), bg),
                                 "failed to clear transparent regions");
         }
-        Q_SCREEN_CHECKERROR(screen_flush_blits(platformWindow()->screen()->nativeContext(),
+        Q_SCREEN_CHECKERROR(screen_flush_blits(platformScreen->nativeContext(),
                     SCREEN_WAIT_IDLE), "failed to flush blits");
     }
 }