Multilingual problem

[ling-zhan]

Hi, How to use the resources language file to change the text of the "Down" or "Cancel" and "Reset" buttons.

PS: I use the SwiftUI language, using UIViewControllerRepresentable return a Mantis.CropViewController.

[guoyingtao]

It seems the localization is broken for swiftUI example. I will fix it soon.

[guoyingtao]

@ling-zhan I found a solution from this link

[ling-zhan]

Thank you for your reply and look forward to your repair.
I will try to see if this method works.

[guoyingtao]

@ling-zhan The "fix" I mean is to try the solution I mentioned above. I tried it in the SwiftUI example and it worked.

[ling-zhan]

Got it, thank you. ^^"

[hajducak]

Hey guys, nice fix. can you guys get any example here, or apply it to example cases, because I tried and for me it is not working. maybe I am doing something wrong. Thanks

[bleckett]

Very nice tool - thank you for making.
One suggestion concerning transparent images...
I'm changing the view controller's background to white (if there are dark pixels) when detecting transparency, but I was thinking it would be nice to have a layer underneath the image that is white or the famous checkerboard that has the same dimensions of the image when cropping?

This is what I use for creating a grid

`
func createGridImage(size: CGSize, rows: Int) -> UIImage {
let renderer = UIGraphicsImageRenderer(size: size)
let img = renderer.image { ctx in
let squareSize = size.width / CGFloat(rows)

    for row in 0..<rows {
        for col in 0..<rows {
            if (row + col) % 2 == 0 {
                ctx.cgContext.setFillColor(UIColor.white.cgColor)
            } else {
                ctx.cgContext.setFillColor(kCOLOR.GRID_GREY.cgColor)
            }
            let rect = CGRect(x: CGFloat(col) * squareSize, y: CGFloat(row) * squareSize, width: squareSize, height: squareSize)
            ctx.cgContext.addRect(rect)
            ctx.cgContext.drawPath(using: .fill)
        }
    }
}
return img

}
`

And for transparency I am using this...

`
extension UIImage {

func hasTransparency() -> Bool {
    guard let cgImage = self.cgImage else { return false }
    let alphaInfo = cgImage.alphaInfo

    // No alpha channel means no transparency
    if alphaInfo == .none || alphaInfo == .noneSkipFirst || alphaInfo == .noneSkipLast {
        return false
    }

    let scaleFactor = 0.1 // Downscale by 90%
    let scaledWidth = Int(CGFloat(cgImage.width) * scaleFactor)
    let scaledHeight = Int(CGFloat(cgImage.height) * scaleFactor)
    let bytesPerPixel = 4
    let bytesPerRow = bytesPerPixel * scaledWidth
    let bitsPerComponent = 8

    var pixelData = [UInt8](repeating: 0, count: scaledWidth * scaledHeight * bytesPerPixel)

    guard let context = CGContext(data: &pixelData,
                                  width: scaledWidth,
                                  height: scaledHeight,
                                  bitsPerComponent: bitsPerComponent,
                                  bytesPerRow: bytesPerRow,
                                  space: CGColorSpaceCreateDeviceRGB(),
                                  bitmapInfo: CGImageAlphaInfo.premultipliedLast.rawValue) else {
        return false
    }

    context.draw(cgImage, in: CGRect(x: 0, y: 0, width: scaledWidth, height: scaledHeight))

    for i in stride(from: 0, to: pixelData.count, by: bytesPerPixel) {
        let alpha = pixelData[i + 3]
        if alpha < 255 {
            return true
        }
    }

    return false
}

}
`

I was thinking of doing a fork, but I've never really worked in Github before....

[bleckett]

hmmm sorry - the code blocks aren't working very well for me...