Implement color management for ImageData

third_party/WebKit/Source/core/html/Float32ImageData.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef Float32ImageData_h
+#define Float32ImageData_h
+
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "core/CoreExport.h"
+#include "core/dom/DOMTypedArray.h"
+#include "core/html/ImageData.h"
+#include "core/imagebitmap/ImageBitmapSource.h"
+#include "platform/geometry/IntRect.h"
+#include "platform/geometry/IntSize.h"
+#include "platform/heap/Handle.h"
+#include "wtf/Compiler.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+class ExceptionState;
+
+class CORE_EXPORT Float32ImageData final
+    : public GarbageCollectedFinalized<Float32ImageData>,
+      public ScriptWrappable {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  static Float32ImageData* create(const IntSize&);
+  static Float32ImageData* create(const IntSize&, DOMFloat32Array*);
+  static Float32ImageData* create(unsigned width,
+                                  unsigned height,
+                                  ExceptionState&);
+  static Float32ImageData* create(unsigned width,
+                                  unsigned height,
+                                  String colorSpace,
+                                  ExceptionState&);
+  static Float32ImageData* create(DOMFloat32Array*,
+                                  unsigned width,
+                                  ExceptionState&);
+  static Float32ImageData* create(DOMFloat32Array*,
+                                  unsigned width,
+                                  String colorSpace,
+                                  ExceptionState&);
+  static Float32ImageData* create(DOMFloat32Array*,
+                                  unsigned width,
+                                  unsigned height,
+                                  ExceptionState&);
+  static Float32ImageData* create(DOMFloat32Array*,
+                                  unsigned width,
+                                  unsigned height,
+                                  String colorSpace,
+                                  ExceptionState&);
+
+  IntSize size() const { return m_size; }
+  int width() const { return m_size.width(); }
+  int height() const { return m_size.height(); }
+  String colorSpace() const {
+    return ImageData::getImageDataColorSpaceName(m_colorSpace);
+  }
+  ImageDataColorSpace imageDataColorSpace() { return m_colorSpace; }
+  const DOMFloat32Array* data() const { return m_data.get(); }
+  DOMFloat32Array* data() { return m_data.get(); }
+
+  DEFINE_INLINE_TRACE() { visitor->trace(m_data); }
+
+  WARN_UNUSED_RESULT v8::Local<v8::Object> associateWithWrapper(
+      v8::Isolate*,
+      const WrapperTypeInfo*,
+      v8::Local<v8::Object> wrapper) override;
+
+ private:
+  Float32ImageData(const IntSize&,
+                   DOMFloat32Array*,
+                   String = kLinearRGBImageDataColorSpaceName);
+
+  IntSize m_size;
+  ImageDataColorSpace m_colorSpace;
+  Member<DOMFloat32Array> m_data;
+
+  static bool validateConstructorArguments(const unsigned&,
+                                           const IntSize* = nullptr,
+                                           const unsigned& = 0,
+                                           const unsigned& = 0,
+                                           const DOMFloat32Array* = nullptr,
+                                           const String* = nullptr,
+                                           ExceptionState* = nullptr);
+
+  static DOMFloat32Array* allocateAndValidateFloat32Array(
+      const unsigned&,
+      ExceptionState* = nullptr);
+};
+
+}  // namespace blink
+
+#endif  // Float32ImageData_h