Shared Fabric color implementation across platforms

Summary: Changelog: [Internal] Align C++ implementations of SharedColor

Reviewed By: mdvacca

Differential Revision: D40632527

fbshipit-source-id: 8ebca5157e5898de4311015c92b5a72dca7197d3

Author: javache

ReactCommon/react/renderer/.clang-tidy

@@ -185,4 +185,11 @@ clang-analyzer-valist.Uninitialized,
 clang-analyzer-valist.Unterminated,
 google-build-using-namespace,
 '
+
+CheckOptions:
+- key: performance-unnecessary-value-param.AllowedTypes
+  value: '[Pp]ointer$;[Pp]tr$;[Rr]ef(erence)?$;'
+- key: performance-unnecessary-copy-initialization.AllowedTypes
+  value: '[Pp]ointer$;[Pp]tr$;[Rr]ef(erence)?$'
+
 ...

ReactCommon/react/renderer/graphics/BUCK

@@ -56,17 +56,13 @@ rn_xplat_cxx_library(
     fbandroid_exported_headers = subdir_glob(
         [
             ("platform/android/react/renderer/graphics", "**/*.h"),
-            ("platform/cxx/react/renderer/graphics", "**/*.h"),
         ],
-        exclude = ["platform/cxx/react/renderer/graphics/PlatformColorParser.h"],
         prefix = "react/renderer/graphics",
     ),
     fbandroid_srcs = glob(
         [
-            "platform/cxx/react/renderer/graphics/**/*.cpp",
             "platform/android/react/renderer/graphics/**/*.cpp",
         ],
-        exclude = ["platform/cxx/react/renderer/graphics/PlatformColorParser.h"],
     ),
     fbobjc_compiler_flags = APPLE_COMPILER_FLAGS,
     fbobjc_preprocessor_flags = get_preprocessor_flags_for_build_mode() + get_apple_inspector_flags(),

ReactCommon/react/renderer/graphics/CMakeLists.txt

@@ -15,18 +15,13 @@ add_compile_options(
         -Wno-gnu-zero-variadic-macro-arguments
         -DLOG_TAG=\"Fabric\")
 
-file(GLOB react_render_graphics_SRC CONFIGURE_DEPENDS
-        *.cpp
-        platform/cxx/react/renderer/graphics/*.cpp)
-
-add_library(react_render_graphics
-        SHARED
-        ${react_render_graphics_SRC})
+file(GLOB react_render_graphics_SRC CONFIGURE_DEPENDS *.cpp)
+add_library(react_render_graphics SHARED ${react_render_graphics_SRC})
 
 target_include_directories(react_render_graphics
         PUBLIC
           ${REACT_COMMON_DIR}
-          ${CMAKE_CURRENT_SOURCE_DIR}/platform/cxx/
+          ${CMAKE_CURRENT_SOURCE_DIR}/platform/android/
         )
 
 target_link_libraries(react_render_graphics glog fb fbjni folly_runtime react_debug)

ReactCommon/react/renderer/graphics/platform/cxx/react/renderer/graphics/Color.cpp renamed to ReactCommon/react/renderer/graphics/Color.cpp

@@ -26,7 +26,7 @@ SharedColor colorFromComponents(ColorComponents components) {
       ((int)round(components.blue * ratio) & 0xff)};
 }
 
-ColorComponents colorComponentsFromColor(SharedColor const &sharedColor) {
+ColorComponents colorComponentsFromColor(SharedColor sharedColor) {
   float ratio = 255;
   Color color = *sharedColor;
   return ColorComponents{

ReactCommon/react/renderer/graphics/platform/ios/Color.h renamed to ReactCommon/react/renderer/graphics/Color.h

@@ -8,32 +8,29 @@
 #pragma once
 
 #include <cmath>
-#include <optional>
+#include <functional>
+#include <limits>
 
-#include <folly/Hash.h>
 #include <react/renderer/graphics/ColorComponents.h>
-#include <react/renderer/graphics/Float.h>
 
-namespace facebook {
-namespace react {
+namespace facebook::react {
 
 using Color = int32_t;
 
+/*
+ * On Android, a color can be represented as 32 bits integer, so there is no
+ * need to instantiate complex color objects and then pass them as shared
+ * pointers. Hense instead of using shared_ptr, we use a simple wrapper class
+ * which provides a pointer-like interface.
+ */
 class SharedColor {
  public:
   static const Color UndefinedColor = std::numeric_limits<Color>::max();
 
   SharedColor() : color_(UndefinedColor) {}
 
-  SharedColor(const SharedColor &sharedColor) : color_(sharedColor.color_) {}
-
   SharedColor(Color color) : color_(color) {}
 
-  SharedColor &operator=(const SharedColor &sharedColor) {
-    color_ = sharedColor.color_;
-    return *this;
-  }
-
   Color operator*() const {
     return color_;
   }
@@ -62,12 +59,11 @@ SharedColor clearColor();
 SharedColor blackColor();
 SharedColor whiteColor();
 
-} // namespace react
-} // namespace facebook
+} // namespace facebook::react
 
 template <>
 struct std::hash<facebook::react::SharedColor> {
-  std::size_t operator()(facebook::react::SharedColor const &color) const {
-    return hash<int>()(*color);
+  size_t operator()(facebook::react::SharedColor color) const {
+    return std::hash<decltype(*color)>{}(*color);
   }
 };

ReactCommon/react/renderer/graphics/conversions.h

@@ -50,17 +50,9 @@ inline void fromRawValue(
 }
 
 #ifdef ANDROID
-
 inline int toAndroidRepr(const SharedColor &color) {
-  ColorComponents components = colorComponentsFromColor(color);
-  auto ratio = 255.f;
-  return (
-      ((int)round(components.alpha * ratio) & 0xff) << 24 |
-      ((int)round(components.red * ratio) & 0xff) << 16 |
-      ((int)round(components.green * ratio) & 0xff) << 8 |
-      ((int)round(components.blue * ratio) & 0xff));
+  return *color;
 }
-
 #endif
 
 inline std::string toString(const SharedColor &value) {

ReactCommon/react/renderer/graphics/platform/android/react/renderer/graphics/Float.h

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <limits>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Exact type of float numbers which ideally should match a type behing
+ * platform- and chip-architecture-specific float type.
+ */
+using Float = float;
+
+} // namespace react
+} // namespace facebook

ReactCommon/react/renderer/graphics/platform/android/react/renderer/graphics/PlatformColorParser.h

@@ -8,7 +8,6 @@
 #pragma once
 
 #include <fbjni/fbjni.h>
-#include <react/jni/ReadableNativeMap.h>
 #include <react/renderer/core/PropsParserContext.h>
 #include <react/renderer/core/RawProps.h>
 #include <react/renderer/graphics/ColorComponents.h>

ReactCommon/react/renderer/graphics/platform/cxx/react/renderer/graphics/Color.h

@@ -8,7 +8,6 @@
 #import "RCTPlatformColorUtils.h"
 
 #import <Foundation/Foundation.h>
-#import <React/RCTUtils.h>
 #import <UIKit/UIKit.h>
 
 #include <string>
@@ -180,7 +179,7 @@
 static inline facebook::react::ColorComponents _ColorComponentsFromUIColor(UIColor *color)
 {
   CGFloat rgba[4];
-  RCTGetRGBAColorComponents(color.CGColor, rgba);
+  [color getRed:&rgba[0] green:&rgba[1] blue:&rgba[2] alpha:&rgba[3]];
   return {(float)rgba[0], (float)rgba[1], (float)rgba[2], (float)rgba[3]};
 }
 

ReactCommon/react/renderer/graphics/platform/ios/Color.cpp

@@ -951,7 +951,7 @@ SPEC CHECKSUMS:
   FlipperKit: cbdee19bdd4e7f05472a66ce290f1b729ba3cb86
   fmt: ff9d55029c625d3757ed641535fd4a75fedc7ce9
   glog: 04b94705f318337d7ead9e6d17c019bd9b1f6b1b
-  hermes-engine: 445a2267b04cb39ca4a0b2d6758b5a0e5a58ccad
+  hermes-engine: 05b2399259b25f6c105858adc778c04342c1f424
   libevent: 4049cae6c81cdb3654a443be001fb9bdceff7913
   OpenSSL-Universal: ebc357f1e6bc71fa463ccb2fe676756aff50e88c
   RCT-Folly: 424b8c9a7a0b9ab2886ffe9c3b041ef628fd4fb1
@@ -989,7 +989,7 @@ SPEC CHECKSUMS:
   React-rncore: 665c70690f404bbfa3948148de72689672a906d2
   React-runtimeexecutor: 97dca9247f4d3cfe0733384b189c6930fbd402b7
   ReactCommon: b1f213aa09e3dfd0a89389b5023fdb1cd6528e96
-  ScreenshotManager: 06cb3d1794c8082d92b3e91813d1678d0977a4fb
+  ScreenshotManager: cf552c19152e3357f08875fc2f85adb2dee6a66b
   SocketRocket: fccef3f9c5cedea1353a9ef6ada904fde10d6608
   Yoga: 1b1a12ff3d86a10565ea7cbe057d42f5e5fb2a07
   YogaKit: f782866e155069a2cca2517aafea43200b01fd5a