Allow QImage with more than 2GByte of image data

Changes internal data-size and pointer calculations
to qssize_t.

Adds new sizeInBytes() accessor to read byte size, and
marks the old one deprecated.

Task-number: QTBUG-50912
Change-Id: Idf0c2010542b0ec1c9abef8afd02d6db07f43e6d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/gui/image/qpixmap_blitter.cpp b/src/gui/image/qpixmap_blitter.cpp
index 950695a9d7..de32327071 100644
--- a/src/gui/image/qpixmap_blitter.cpp
+++ b/src/gui/image/qpixmap_blitter.cpp
@@ -190,8 +190,8 @@ void QBlittablePlatformPixmap::fromImage(const QImage &image,
 
     uchar *mem = thisImg->bits();
     const uchar *bits = correctFormatPic.constBits();
-    int bytesCopied = 0;
-    while (bytesCopied < correctFormatPic.byteCount()) {
+    qssize_t bytesCopied = 0;
+    while (bytesCopied < correctFormatPic.sizeInBytes()) {
         memcpy(mem,bits,correctFormatPic.bytesPerLine());
         mem += thisImg->bytesPerLine();
         bits += correctFormatPic.bytesPerLine();