From 9a8fb9c45b018312da0ad47f35686b911ebb8693 Mon Sep 17 00:00:00 2001
From: Paul Shen <paulshen0@gmail.com>
Date: Tue, 28 Jun 2016 00:29:13 -0700
Subject: [PATCH] Respect scale in RCTPhotoLibraryImageLoader

Summary:
RCTPhotoLibraryImageLoader was not using the scale argument so the image loaded wasn't always the right resolution.

**Test plan**

On my iPhone 6, which has `RCTScreenScale() === 2`, see that an `<Image>` rendered with a `ph://XXX` URI is rendered properly in 2x.

More thoroughly, I used `PHAsset.fetchAssetsWithMediaType(.Image, options: fetchOptions)` to fetch PHAssets to get a `asset.localIdentifier` to test. Then, I rendered a `<Image source={{uri: `ph://${localIdentifier}`}} style={{width: 375, height: 375}} />`.
Closes https://github.com/facebook/react-native/pull/8458

Differential Revision: D3492495

fbshipit-source-id: 34b2757f880edf6ff1751773f6e1a0f62c289f5a
---
 Libraries/CameraRoll/RCTPhotoLibraryImageLoader.m | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.m b/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.m
index 3cb4d1c3b..f1ccc4996 100644
--- a/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.m
+++ b/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.m
@@ -66,7 +66,7 @@ RCT_EXPORT_MODULE()
     targetSize = PHImageManagerMaximumSize;
     imageOptions.resizeMode = PHImageRequestOptionsResizeModeNone;
   } else {
-    targetSize = size;
+    targetSize = CGSizeApplyAffineTransform(size, CGAffineTransformMakeScale(scale, scale));
     imageOptions.resizeMode = PHImageRequestOptionsResizeModeFast;
   }