word cloud image view demo

WordCloudImageView.swift

var body: some View {
    Image(uiImage: wordCloudImage(words))
        .resizable()
        .aspectRatio(contentMode: .fit)
        .padding(10)
}

func wordCloudImage(_ words: [WordElement]) -> UIImage {
    UIGraphicsBeginImageContextWithOptions(canvasSize, false, 1.0)
    
    var occupiedAreas = [CGRect]()
    for word in words {
        let textAttrs = [
            NSAttributedString.Key.font: UIFont(name: word.fontName, size: word.fontSize)!,
            NSAttributedString.Key.foregroundColor: word.color,
            ] as [NSAttributedString.Key : Any]
        
        // calculate rendered size
        let estimateSize = (word.text as NSString).size(withAttributes: textAttrs)
        
        let textRect = findSafePlace(for: estimateSize, avoid: occupiedAreas)
        word.text.draw(in: textRect, withAttributes: textAttrs)
        
        occupiedAreas.append(textRect)
    }
    
    let image = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    return image!
}