stefanoltmann/exif-viewer

Free online EXIF Viewer (made with Kotlin/WASM)

exif-viewer's Issues

Rotate thumbnail image according to orientation

Would be nice to rotate the thumbnail image according to the image orientation, but without changing the actual image bytes.

This will do the transformation in CSS:

exif-viewer/app/src/wasmJsMain/kotlin/Main.kt

Lines 83 to 99 in d40af2e

	// /*
	// * Use CSS to rotate the image to keep the original image bytes.
	// * If the user saves the image to disk it should still be identical to
	// * the output of "exiftool -b -ThumbnailImage test.jpg > thumb.jpg".
	// */
	// val styleTransform = when (orientation) {
	// TiffOrientation.MIRROR_HORIZONTAL -> "scale(-1, 1)"
	// TiffOrientation.UPSIDE_DOWN -> "rotate(180deg)"
	// TiffOrientation.MIRROR_VERTICAL -> "scale(1, -1)"
	// TiffOrientation.MIRROR_HORIZONTAL_AND_ROTATE_LEFT -> "rotate(-90deg) scale(1, -1)"
	// TiffOrientation.ROTATE_RIGHT -> "rotate(90deg)"
	// TiffOrientation.MIRROR_HORIZONTAL_AND_ROTATE_RIGHT -> "rotate(90deg) scale(1, -1)"
	// TiffOrientation.ROTATE_LEFT -> "rotate(-90deg)"
	// else -> ""
	// }
	//
	// imageElement.style.transform = styleTransform

The problem is that after that the image size will not be correct.

I did not find a solution for this so far.

Fix hover-effect in integration

With #7 I implemented a feature that overflow values get highlighted.

It works in the local HTML files, but for some reason not in the integrated project.

This needs further investigation.

Suggestion - don't cut the PNG `tEXt` chunk

I really like your viewer, especially the hex viewer part.

The very popular https://github.com/AUTOMATIC1111/stable-diffusion-webui puts the generation parameters in the tEXt chunk and this far it's hard to find software that will display it (outside the stable-diffusion-webui itself). I also think the tEXt chunk is used by other ML image generators.

Ideally this should apply to the iTXt chunk as well, and if your really want to "take it all the way" remember that this one is UTF-8 encoded 😉

For now I've just been using a normal hex viewer for this, but it's more convenient using something that understand "chunks".

Here is an example image generated by me so that it's safe to use: