From 2d59a61a3f5bf853dfeb672d6493cd9ef35cc162 Mon Sep 17 00:00:00 2001
From: Wei Wang <onevcat@gmail.com>
Date: Mon, 9 Oct 2023 00:32:11 +0900
Subject: [PATCH] Revert "Add notSkipAlphaChannel options."

---
 Source/APNGKit/APNGImageRenderer.swift | 12 ++----------
 Source/APNGKit/APNGImageView.swift     |  8 ++------
 2 files changed, 4 insertions(+), 16 deletions(-)

diff --git a/Source/APNGKit/APNGImageRenderer.swift b/Source/APNGKit/APNGImageRenderer.swift
index 1390916..c689913 100644
--- a/Source/APNGKit/APNGImageRenderer.swift
+++ b/Source/APNGKit/APNGImageRenderer.swift
@@ -24,19 +24,11 @@ class APNGImageRenderer {
     private var foundMultipleAnimationControl: Bool = false
     private var expectedSequenceNumber: Int = 0
     
-    init(decoder: APNGDecoder, shouldRenderWithAlpha: Bool = false) throws {
+    init(decoder: APNGDecoder) throws {
         self.decoder = decoder
         self.reader = try decoder.reader.clone()
         
         let imageHeader = decoder.imageHeader
-        
-        let bitmapInfo: CGBitmapInfo
-        if shouldRenderWithAlpha {
-            bitmapInfo = CGBitmapInfo(rawValue: CGImageAlphaInfo.premultipliedLast.rawValue)
-        } else {
-            bitmapInfo = imageHeader.bitmapInfo
-        }
-        
         guard let outputBuffer = CGContext(
             data: nil,
             width: imageHeader.width,
@@ -44,7 +36,7 @@ class APNGImageRenderer {
             bitsPerComponent: imageHeader.bitDepthPerComponent,
             bytesPerRow: imageHeader.bytesPerRow,
             space: imageHeader.colorSpace,
-            bitmapInfo: bitmapInfo.rawValue
+            bitmapInfo: imageHeader.bitmapInfo.rawValue
         ) else {
             throw APNGKitError.decoderError(.canvasCreatingFailed)
         }
diff --git a/Source/APNGKit/APNGImageView.swift b/Source/APNGKit/APNGImageView.swift
index 3da9109..10f23a8 100644
--- a/Source/APNGKit/APNGImageView.swift
+++ b/Source/APNGKit/APNGImageView.swift
@@ -25,9 +25,6 @@ open class APNGImageView: PlatformView {
     /// of `self`. Default is `true`.
     open var autoStartAnimationWhenSetImage = true
     
-    /// Enable this option to always reference the alpha channel during rendering. Default is `false`.
-    open var shouldRenderWithAlpha = false
-    
     /// A delegate called every time when a "play" (a single loop of the animated image) is done. The parameter number
     /// is the count of played loops.
     ///
@@ -98,10 +95,9 @@ open class APNGImageView: PlatformView {
     
     /// Creates an APNG image view with the specified animated image.
     /// - Parameter image: The initial image to display in the image view.
-    public convenience init(image: APNGImage?, autoStartAnimating: Bool = true, shouldRenderWithAlpha: Bool = false) {
+    public convenience init(image: APNGImage?, autoStartAnimating: Bool = true) {
         self.init(frame: .zero)
         self.autoStartAnimationWhenSetImage = autoStartAnimating
-        self.shouldRenderWithAlpha = shouldRenderWithAlpha
         self.image = image
     }
     
@@ -216,7 +212,7 @@ open class APNGImageView: PlatformView {
             unsetImage()
             
             do {
-                renderer = try APNGImageRenderer(decoder: nextImage.decoder, shouldRenderWithAlpha: shouldRenderWithAlpha)
+                renderer = try APNGImageRenderer(decoder: nextImage.decoder)
             } catch {
                 printLog("Error happens while creating renderer for image. \(error)")
                 defaultDecodingErrored(