[poc] curve-filter

third_party/WebKit/Source/platform/graphics/Color.cpp

Index: third_party/WebKit/Source/platform/graphics/Color.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/Color.cpp b/third_party/WebKit/Source/platform/graphics/Color.cpp
index dc9364edbde2bea1f7c0a43392244b658f961551..2d4a6cb474efed653ad3c038051d28be3aaa9d7b 100644
--- a/third_party/WebKit/Source/platform/graphics/Color.cpp
+++ b/third_party/WebKit/Source/platform/graphics/Color.cpp
@@ -26,6 +26,11 @@
 #include "platform/graphics/Color.h"
 
 #include "platform/Decimal.h"
+#include "platform/graphics/ColorSpaceFilter.h"
+#include "platform/graphics/ColorSpaceProfile.h"
+#include "platform/graphics/GraphicsScreen.h"
+#include "platform/graphics/skia/SkiaUtils.h"
+#include "third_party/skia/include/core/SkColorFilter.h"
 #include "wtf/Assertions.h"
 #include "wtf/HexNumber.h"
 #include "wtf/MathExtras.h"
@@ -454,4 +459,28 @@ RGBA32 premultipliedARGBFromColor(const Color& color)
     return pixelColor;
 }
 
+Color Color::toDeviceColor(const Color& color)
+{
+    if (!imageColorProfilesEnabled())
+        return color;
+
+    RELEASE_ASSERT(currentScreenId());
+
+    // FIXME: the default color transform sRGB->screen is hot: Find a way to cache it. Add API to retrieve it.
+
+    RefPtr<SkColorFilter> colorTransform = createColorSpaceFilter(screenColorProfile(ScreenDevice::sRGB).get(), screenColorProfile(currentScreenId()).get());
+    if (!colorTransform)
+        return Color::asDeviceColor(color);
+
+    RELEASE_ASSERT(!color.isDeviceColor());
+
+    SkColor skColor = colorTransform->filterColor(SkColorSetARGB(color.alpha(), color.red(), color.green(), color.blue()));
+    int r = SkColorGetR(skColor);
+    int g = SkColorGetG(skColor);
+    int b = SkColorGetB(skColor);
+    int a = SkColorGetA(skColor);
+
+    return Color::asDeviceColor(Color(r, g, b, a));
+}
+
 } // namespace blink