From 5785d552608510cafa64467caea09957ebeb5e37 Mon Sep 17 00:00:00 2001
From: DreamPiggy <lizhuoli1126@126.com>
Date: Thu, 11 Jan 2024 17:20:51 +0800
Subject: [PATCH] Fix the wrong flipping rendering on macOS because of
 CoreGraphics/AppKit differences

---
 SDWebImageSVGNativeCoder/Classes/SDImageSVGNativeCoder.mm | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/SDWebImageSVGNativeCoder/Classes/SDImageSVGNativeCoder.mm b/SDWebImageSVGNativeCoder/Classes/SDImageSVGNativeCoder.mm
index 38071c8..6e114b3 100644
--- a/SDWebImageSVGNativeCoder/Classes/SDImageSVGNativeCoder.mm
+++ b/SDWebImageSVGNativeCoder/Classes/SDImageSVGNativeCoder.mm
@@ -80,6 +80,13 @@ - (nullable UIImage *)decodedImageWithData:(nullable NSData *)data options:(null
     
     renderer->SetGraphicsContext(ctx);
     
+#if SD_MAC
+    // Core Graphics Coordinate System convert. SDWebImage use's non-flipped one
+    // See: [NSGraphicsContext graphicsContextWithCGContext:context flipped:NO];
+    CGContextScaleCTM(ctx, 1, -1);
+    CGContextTranslateCTM(ctx, 0, -svgSize.height);
+#endif
+    
     doc->Render(svgSize.width, svgSize.height);
     
     renderer->ReleaseGraphicsContext();