BitmapImage BitmapImage::transformed(QRect newBoundaries, bool smoothTransform)
{
BitmapImage transformedImage(newBoundaries, QColor(0,0,0,0));
QPainter painter(transformedImage.mImage);
painter.setRenderHint(QPainter::SmoothPixmapTransform, smoothTransform);
newBoundaries.moveTopLeft( QPoint(0,0) );
painter.drawImage(newBoundaries, *mImage );
painter.end();
return transformedImage;
}
String ImageBuffer::toDataURL(const String& mimeType) const
{
ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType));
RetainPtr<CGImageRef> image(AdoptCF, CGBitmapContextCreateImage(context()->platformContext()));
if (!image)
return "data:,";
size_t width = CGImageGetWidth(image.get());
size_t height = CGImageGetHeight(image.get());
OwnArrayPtr<uint32_t> imageData(new uint32_t[width * height]);
if (!imageData)
return "data:,";
RetainPtr<CGImageRef> transformedImage(AdoptCF, CGBitmapContextCreateImage(context()->platformContext()));
if (!transformedImage)
return "data:,";
RetainPtr<CFMutableDataRef> transformedImageData(AdoptCF, CFDataCreateMutable(kCFAllocatorDefault, 0));
if (!transformedImageData)
return "data:,";
RetainPtr<CGImageDestinationRef> imageDestination(AdoptCF, CGImageDestinationCreateWithData(transformedImageData.get(),
utiFromMIMEType(mimeType).get(), 1, 0));
if (!imageDestination)
return "data:,";
CGImageDestinationAddImage(imageDestination.get(), transformedImage.get(), 0);
CGImageDestinationFinalize(imageDestination.get());
Vector<char> in;
in.append(CFDataGetBytePtr(transformedImageData.get()), CFDataGetLength(transformedImageData.get()));
Vector<char> out;
base64Encode(in, out);
out.append('\0');
return String::format("data:%s;base64,%s", mimeType.utf8().data(), out.data());
}
void ImageFunctor::grabImage(int num) {
QImage img = m_futureWatcher->resultAt(num);
emit transformedImage(img);
}