Bug 271977 – REGRESSION (276827@main): When drawing a pattern, get the oriented image frame only if the orientation is not TopLeft

• Status: RESOLVED
• Resolution: FIXED
• Component: Images

[Said Abou-Hallawa]

BitmapImage::drawPattern() uses ImageOrientation::Orientation::FromImage when using the current ImageFrame to draw the pattern. We end up calling BitmapImageSource::preTransformedNativeImageAtIndex() via other calls. After 276827@main, this function checks

if (orientation == ImageOrientation::Orientation::None && size == sourceSize)
    return nativeImage;

Before resolving the orientation if FromImage is passed. We then resolve the image orientation.

if (orientation == ImageOrientation::Orientation::FromImage)
    orientation = frameOrientationAtIndex(index);

We then draw the current ImageFrame to a temporary ImageBuffer then we sink the drawn the ImageBuffer to a new NativeImage. This step is not needed if image orientation is TopLeft. We can just return the original image frame.

[Radar WebKit Bug Importer]

<rdar://problem/125731142>

[Said Abou-Hallawa]

Pull request: https://github.com/WebKit/WebKit/pull/26688

[EWS]

Committed 276902@main (34d1f9aabb7b): <https://commits.webkit.org/276902@main>

Reviewed commits have been landed. Closing PR #26688 and removing active labels.