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Merge pull request #74 from jasonjmcghee/fix-external-monitor-bugs
fix external monitor bugs, mainly by calling CGDisplayCreateImage without passing the display frame
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| // | ||
| // ImageResizer.swift | ||
| // rem | ||
| // | ||
| // Created by Jason McGhee on 1/17/24. | ||
| // | ||
|
|
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| import Foundation | ||
| import Cocoa | ||
|
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| class ImageResizer { | ||
| private var context: CGContext | ||
| private let targetWidth: CGFloat | ||
| private let targetHeight: CGFloat | ||
|
|
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| init(targetWidth: Int, targetHeight: Int) { | ||
| self.targetWidth = CGFloat(targetWidth) | ||
| self.targetHeight = CGFloat(targetHeight) | ||
|
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| let colorSpace = CGColorSpaceCreateDeviceRGB() | ||
| let bitmapInfo = CGImageAlphaInfo.premultipliedLast.rawValue | ||
| context = CGContext(data: nil, width: targetWidth, height: targetHeight, bitsPerComponent: 8, bytesPerRow: 0, space: colorSpace, bitmapInfo: bitmapInfo)! | ||
| } | ||
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| func resizeAndPad(image: CGImage) -> CGImage? { | ||
| let widthScaleRatio = targetWidth / CGFloat(image.width) | ||
| let heightScaleRatio = targetHeight / CGFloat(image.height) | ||
| let scaleFactor = min(widthScaleRatio, heightScaleRatio) | ||
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| let scaledWidth = CGFloat(image.width) * scaleFactor | ||
| let scaledHeight = CGFloat(image.height) * scaleFactor | ||
| let imageRect = CGRect(x: (targetWidth - scaledWidth) / 2, y: (targetHeight - scaledHeight) / 2, width: scaledWidth, height: scaledHeight) | ||
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| context.clear(CGRect(x: 0, y: 0, width: targetWidth, height: targetHeight)) | ||
| context.setFillColor(NSColor.black.cgColor) | ||
| context.fill(CGRect(x: 0, y: 0, width: targetWidth, height: targetHeight)) | ||
| context.interpolationQuality = .high | ||
| context.draw(image, in: imageRect) | ||
|
|
||
| return context.makeImage() | ||
| } | ||
| } |
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