Move implementation of WebFilterOperations into cc

cc/output/filter_operation.h

+// Copyright 2013 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 CC_OUTPUT_FILTER_OPERATION_H_
+#define CC_OUTPUT_FILTER_OPERATION_H_
+
+#include "base/logging.h"
+#include "cc/base/cc_export.h"
+#include "third_party/skia/include/core/SkColor.h"
+#include "third_party/skia/include/core/SkScalar.h"
+#include "ui/gfx/point.h"
+
+namespace cc {
+
+class CC_EXPORT FilterOperation {
+ public:
+  enum FilterType {
+    FilterTypeGrayscale,

[jamesr, 2013/06/18 23:08:52]

This isn't the correct enum style for Chromium
(http://www.chromium.org/developers/coding-style#Naming).  In chromium, enum
types should be SHOUTING_STYLE and do not need to include the type name in the
enum.  These should probably be GRAYSCALE, SEPIA, SATURATE, etc

[ajuma, 2013/06/19 17:08:30]

Done.

+    FilterTypeSepia,
+    FilterTypeSaturate,
+    FilterTypeHueRotate,
+    FilterTypeInvert,
+    FilterTypeBrightness,
+    FilterTypeContrast,
+    FilterTypeOpacity,
+    FilterTypeBlur,
+    FilterTypeDropShadow,
+    FilterTypeColorMatrix,
+    FilterTypeZoom,
+    FilterTypeSaturatingBrightness,  // Not used in CSS/SVG.
+  };
+
+  FilterType type() const { return type_; }
+
+  float amount() const {
+    DCHECK(type_ != FilterTypeColorMatrix);

[jamesr, 2013/06/18 23:08:52]

DCHECK_NE

[ajuma, 2013/06/19 17:08:30]

Done.

+    return amount_;
+  }
+
+  gfx::Point drop_shadow_offset() const {
+    DCHECK(type_ == FilterTypeDropShadow);

[jamesr, 2013/06/18 23:08:52]

DCHECK_EQ, etc

[ajuma, 2013/06/19 17:08:30]

Done.

+    return drop_shadow_offset_;
+  }
+
+  SkColor drop_shadow_color() const {
+    DCHECK(type_ == FilterTypeDropShadow);
+    return drop_shadow_color_;
+  }
+
+  const SkScalar* matrix() const {
+    DCHECK(type_ == FilterTypeColorMatrix);
+    return matrix_;
+  }
+
+  int zoom_inset() const {
+    DCHECK(type_ == FilterTypeZoom);
+    return zoom_inset_;
+  }
+
+  static FilterOperation CreateGrayscaleFilter(float amount) {
+    return FilterOperation(FilterTypeGrayscale, amount);
+  }
+
+  static FilterOperation CreateSepiaFilter(float amount) {
+    return FilterOperation(FilterTypeSepia, amount);
+  }
+
+  static FilterOperation CreateSaturateFilter(float amount) {
+    return FilterOperation(FilterTypeSaturate, amount);
+  }
+
+  static FilterOperation CreateHueRotateFilter(float amount) {
+    return FilterOperation(FilterTypeHueRotate, amount);
+  }
+
+  static FilterOperation CreateInvertFilter(float amount) {
+    return FilterOperation(FilterTypeInvert, amount);
+  }
+
+  static FilterOperation CreateBrightnessFilter(float amount) {
+    return FilterOperation(FilterTypeBrightness, amount);
+  }
+
+  static FilterOperation CreateContrastFilter(float amount) {
+    return FilterOperation(FilterTypeContrast, amount);
+  }
+
+  static FilterOperation CreateOpacityFilter(float amount) {
+    return FilterOperation(FilterTypeOpacity, amount);
+  }
+
+  static FilterOperation CreateBlurFilter(float amount) {
+    return FilterOperation(FilterTypeBlur, amount);
+  }
+
+  static FilterOperation CreateDropShadowFilter(gfx::Point offset,
+                                                float std_deviation,
+                                                SkColor color) {
+    return FilterOperation(FilterTypeDropShadow, offset, std_deviation, color);
+  }
+
+  static FilterOperation CreateColorMatrixFilter(SkScalar matrix[20]) {
+    return FilterOperation(FilterTypeColorMatrix, matrix);
+  }
+
+  static FilterOperation CreateZoomFilter(float amount, int inset) {
+    return FilterOperation(FilterTypeZoom, amount, inset);
+  }
+
+  static FilterOperation CreateSaturatingBrightnessFilter(float amount) {
+    return FilterOperation(FilterTypeSaturatingBrightness, amount);
+  }
+
+  bool operator==(const FilterOperation& other) const;
+
+  bool operator!=(const FilterOperation& other) const {
+    return !(*this == other);
+  }
+
+  // Methods for restoring a FilterOperation.
+  static FilterOperation CreateEmptyFilter() {
+    return FilterOperation(FilterTypeGrayscale, 0.0);
+  }
+
+  void set_type(FilterType type) { type_ = type; }
+
+  void set_amount(float amount) {
+    DCHECK(type_ != FilterTypeColorMatrix);
+    amount_ = amount;
+  }
+
+  void set_drop_shadow_offset(gfx::Point offset) {
+    DCHECK(type_ == FilterTypeDropShadow);
+    drop_shadow_offset_ = offset;
+  }
+
+  void set_drop_shadow_color(SkColor color) {
+    DCHECK(type_ == FilterTypeDropShadow);
+    drop_shadow_color_ = color;
+  }
+
+  void set_matrix(const SkScalar matrix[20]) {
+    DCHECK(type_ == FilterTypeColorMatrix);
+    for (unsigned i = 0; i < 20; ++i)
+      matrix_[i] = matrix[i];
+  }
+
+  void set_zoom_inset(int inset) {
+    DCHECK(type_ == FilterTypeZoom);
+    zoom_inset_ = inset;
+  }
+
+ private:
+  FilterOperation(FilterType type, float amount);
+
+  FilterOperation(FilterType type,
+                  gfx::Point offset,
+                  float stdDeviation,
+                  SkColor color);
+
+  FilterOperation(FilterType, SkScalar matrix[20]);
+
+  FilterOperation(FilterType type, float amount, int inset);
+
+  FilterType type_;
+  float amount_;
+  gfx::Point drop_shadow_offset_;
+  SkColor drop_shadow_color_;
+  SkScalar matrix_[20];
+  int zoom_inset_;
+};
+
+}  // namespace cc
+
+#endif  // CC_OUTPUT_FILTER_OPERATION_H_