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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef WebFilterOperation_h
#define WebFilterOperation_h
#include "WebCommon.h"
#include "WebColor.h"
#include "WebPoint.h"
namespace WebKit {
class WebFilterOperation {
public:
enum FilterType {
FilterTypeGrayscale,
FilterTypeSepia,
FilterTypeSaturate,
FilterTypeHueRotate,
FilterTypeInvert,
FilterTypeBrightness,
FilterTypeContrast,
FilterTypeOpacity,
FilterTypeBlur,
FilterTypeDropShadow,
};
FilterType type() const { return m_type; }
float amount() const
{
return m_amount;
}
WebPoint dropShadowOffset() const
{
WEBKIT_ASSERT(m_type == FilterTypeDropShadow);
return WebPoint(m_dropShadowOffset);
}
WebColor dropShadowColor() const
{
WEBKIT_ASSERT(m_type == FilterTypeDropShadow);
return m_dropShadowColor;
}
#define WEBKIT_HAS_NEW_WEBFILTEROPERATION_API 1
static WebFilterOperation createGrayscaleFilter(float amount) { return WebFilterOperation(FilterTypeGrayscale, amount); }
static WebFilterOperation createSepiaFilter(float amount) { return WebFilterOperation(FilterTypeSepia, amount); }
static WebFilterOperation createSaturateFilter(float amount) { return WebFilterOperation(FilterTypeSaturate, amount); }
static WebFilterOperation createHueRotateFilter(float amount) { return WebFilterOperation(FilterTypeHueRotate, amount); }
static WebFilterOperation createInvertFilter(float amount) { return WebFilterOperation(FilterTypeInvert, amount); }
static WebFilterOperation createBrightnessFilter(float amount) { return WebFilterOperation(FilterTypeBrightness, amount); }
static WebFilterOperation createContrastFilter(float amount) { return WebFilterOperation(FilterTypeContrast, amount); }
static WebFilterOperation createOpacityFilter(float amount) { return WebFilterOperation(FilterTypeOpacity, amount); }
static WebFilterOperation createBlurFilter(float amount) { return WebFilterOperation(FilterTypeBlur, amount); }
static WebFilterOperation createDropShadowFilter(WebPoint offset, float stdDeviation, WebColor color) { return WebFilterOperation(FilterTypeDropShadow, offset, stdDeviation, color); }
bool equals(const WebFilterOperation& other) const
{
return m_amount == other.m_amount
&& m_dropShadowOffset == other.m_dropShadowOffset
&& m_dropShadowColor == other.m_dropShadowColor;
}
private:
FilterType m_type;
float m_amount;
WebPoint m_dropShadowOffset;
WebColor m_dropShadowColor;
WebFilterOperation(FilterType type, float amount)
{
WEBKIT_ASSERT(type != FilterTypeDropShadow);
m_type = type;
m_amount = amount;
m_dropShadowColor = 0;
}
WebFilterOperation(FilterType type, WebPoint offset, float stdDeviation, WebColor color)
{
WEBKIT_ASSERT(type == FilterTypeDropShadow);
m_type = type;
m_amount = stdDeviation;
m_dropShadowOffset = offset;
m_dropShadowColor = color;
}
};
inline bool operator==(const WebFilterOperation& a, const WebFilterOperation& b)
{
return a.equals(b);
}
inline bool operator!=(const WebFilterOperation& a, const WebFilterOperation& b)
{
return !(a == b);
}
}
#endif
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