qimage_darwin.mm

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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qimage.h"
 
#include <private/qcore_mac_p.h>
#include <private/qcoregraphics_p.h>
 
#import <Foundation/Foundation.h>
#import <CoreGraphics/CoreGraphics.h>
 
QT_BEGIN_NAMESPACE
 
CGImageRef QImage::toCGImage() const
{
    if (isNull())
        return nil;
 
    CGBitmapInfo bitmapInfo = qt_mac_bitmapInfoForImage(*this);
 
    // Format not supported: return nil CGImageRef
    if (bitmapInfo == kCGImageAlphaNone)
        return nil;
 
    // Create a data provider that owns a copy of the QImage and references the image data.
    auto deleter = [](void *image, const void *, size_t)
                   { delete static_cast<QImage *>(image); };
    QCFType<CGDataProviderRef> dataProvider =
        CGDataProviderCreateWithData(new QImage(*this), bits(), sizeInBytes(), deleter);
 
    QCFType<CGColorSpaceRef> colorSpace =  CGColorSpaceCreateWithName(kCGColorSpaceSRGB);
 
    const size_t bitsPerComponent = 8;
    const size_t bitsPerPixel = 32;
    const CGFloat *decode = nullptr;
    const bool shouldInterpolate = false;
 
    return CGImageCreate(width(), height(), bitsPerComponent, bitsPerPixel,
                         this->bytesPerLine(), colorSpace, bitmapInfo, dataProvider,
                         decode, shouldInterpolate, kCGRenderingIntentDefault);
}
 
QT_END_NAMESPACE