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/*
Copyright (C) 2024 Rubén Beltrán del Río
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see https://captura.tranquil.systems.
*/
import CoreGraphics
extension CGImage {
func resize(by scale: CGFloat) -> CGImage? {
let width = Int(CGFloat(self.width) / scale)
let height = Int(CGFloat(self.height) / scale)
let bitsPerComponent = self.bitsPerComponent
let colorSpace = self.colorSpace ?? CGColorSpace(name: CGColorSpace.sRGB)!
let bitmapInfo = self.bitmapInfo.rawValue
guard
let context = CGContext(
data: nil, width: width, height: height, bitsPerComponent: bitsPerComponent, bytesPerRow: 0,
space: colorSpace, bitmapInfo: bitmapInfo)
else {
return nil
}
context.interpolationQuality = .high
context.draw(self, in: CGRect(x: 0, y: 0, width: width, height: height))
return context.makeImage()
}
}
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