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[fix/exif-orientation-handling] Fix handling of Exif orientation info for image rotation/flipping #74

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merged 1 commit into from
Mar 14, 2024
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[fix/exif-orientation-handling] Fix handling of Exif orientation info for image rotation/flipping #74

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13 changes: 13 additions & 0 deletions ...age-picker/src/androidMain/kotlin/com/preat/peekaboo/image/picker/PeekabooImageResizer.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -201,6 +201,19 @@ internal object PeekabooImageResizer {
ExifInterface.ORIENTATION_ROTATE_90 -> matrix.postRotate(90f)
ExifInterface.ORIENTATION_ROTATE_180 -> matrix.postRotate(180f)
ExifInterface.ORIENTATION_ROTATE_270 -> matrix.postRotate(270f)
ExifInterface.ORIENTATION_FLIP_HORIZONTAL -> matrix.preScale(-1.0f, 1.0f)
ExifInterface.ORIENTATION_FLIP_VERTICAL -> {
matrix.preScale(1.0f, -1.0f)
matrix.postRotate(180f)
}
ExifInterface.ORIENTATION_TRANSPOSE -> {
matrix.preScale(-1.0f, 1.0f)
matrix.postRotate(270f)
}
ExifInterface.ORIENTATION_TRANSVERSE -> {
matrix.preScale(-1.0f, 1.0f)
matrix.postRotate(90f)
}
}

return Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true)
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13 changes: 13 additions & 0 deletions peekaboo-ui/src/androidMain/kotlin/com/preat/peekaboo/ui/gallery/PeekabooGallery.android.kt
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Expand Up @@ -183,6 +183,19 @@ private fun rotateImageIfRequired(
ExifInterface.ORIENTATION_ROTATE_90 -> matrix.postRotate(90f)
ExifInterface.ORIENTATION_ROTATE_180 -> matrix.postRotate(180f)
ExifInterface.ORIENTATION_ROTATE_270 -> matrix.postRotate(270f)
ExifInterface.ORIENTATION_FLIP_HORIZONTAL -> matrix.preScale(-1.0f, 1.0f)
ExifInterface.ORIENTATION_FLIP_VERTICAL -> {
matrix.preScale(1.0f, -1.0f)
matrix.postRotate(180f)
}
ExifInterface.ORIENTATION_TRANSPOSE -> {
matrix.preScale(-1.0f, 1.0f)
matrix.postRotate(270f)
}
ExifInterface.ORIENTATION_TRANSVERSE -> {
matrix.preScale(-1.0f, 1.0f)
matrix.postRotate(90f)
}
}

return Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true)
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