RValue ref version of QPixmap::fromImage()

When converting from a temporary image we can use inplace conversion
since we don't have to worry about changes made to the original.

This should give a speedup in several places where QPixmaps are made
from
the return values of methods returning QImages.

Change-Id: I1835bcf3fc061c4dbbb3d0507ec84178dc49b29b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/src/gui/image/qpixmap_raster.cpp b/src/gui/image/qpixmap_raster.cpp
index f9a017c281..be63430a78 100644
--- a/src/gui/image/qpixmap_raster.cpp
+++ b/src/gui/image/qpixmap_raster.cpp
@@ -135,11 +135,16 @@ bool QRasterPlatformPixmap::fromData(const uchar *buffer, uint len, const char *
 void QRasterPlatformPixmap::fromImage(const QImage &sourceImage,
                                   Qt::ImageConversionFlags flags)
 {
-    Q_UNUSED(flags);
     QImage image = sourceImage;
     createPixmapForImage(image, flags, /* inplace = */false);
 }
 
+void QRasterPlatformPixmap::fromImageInPlace(QImage &sourceImage,
+                                             Qt::ImageConversionFlags flags)
+{
+    createPixmapForImage(sourceImage, flags, /* inplace = */true);
+}
+
 void QRasterPlatformPixmap::fromImageReader(QImageReader *imageReader,
                                         Qt::ImageConversionFlags flags)
 {