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/*
* Copyright (C) 2013 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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.
*/
#include "config.h"
#include "core/animation/AnimatableColor.h"
#include "platform/animation/AnimationUtilities.h"
#include "wtf/MathExtras.h"
namespace WebCore {
AnimatableColorImpl::AnimatableColorImpl(float red, float green, float blue, float alpha)
: m_alpha(clampTo(alpha, 0.0f, 1.0f))
, m_red(clampTo(red, 0.0f, 1.0f))
, m_green(clampTo(green, 0.0f, 1.0f))
, m_blue(clampTo(blue, 0.0f, 1.0f))
{
}
AnimatableColorImpl::AnimatableColorImpl(Color color)
: m_alpha(color.alpha() / 255.0f)
, m_red(color.red() / 255.0f * m_alpha)
, m_green(color.green() / 255.0f * m_alpha)
, m_blue(color.blue() / 255.0f * m_alpha)
{
}
Color AnimatableColorImpl::toColor() const
{
if (!m_alpha)
return Color::transparent;
return Color(m_red / m_alpha, m_green / m_alpha, m_blue / m_alpha, m_alpha);
}
AnimatableColorImpl AnimatableColorImpl::interpolateTo(const AnimatableColorImpl& to, double fraction) const
{
return AnimatableColorImpl(blend(m_red, to.m_red, fraction),
blend(m_green, to.m_green, fraction),
blend(m_blue, to.m_blue, fraction),
blend(m_alpha, to.m_alpha, fraction));
}
AnimatableColorImpl AnimatableColorImpl::addWith(const AnimatableColorImpl& addend) const
{
return AnimatableColorImpl(m_red + addend.m_red,
m_green + addend.m_green,
m_blue + addend.m_blue,
m_alpha + addend.m_alpha);
}
bool AnimatableColorImpl::operator==(const AnimatableColorImpl& other) const
{
return m_red == other.m_red
&& m_green == other.m_green
&& m_blue == other.m_blue
&& m_alpha == other.m_alpha;
}
PassRefPtr<AnimatableColor> AnimatableColor::create(const AnimatableColorImpl& color, const AnimatableColorImpl& visitedLinkColor)
{
return adoptRef(new AnimatableColor(color, visitedLinkColor));
}
PassRefPtr<AnimatableValue> AnimatableColor::interpolateTo(const AnimatableValue* value, double fraction) const
{
const AnimatableColor* color = toAnimatableColor(value);
return create(m_color.interpolateTo(color->m_color, fraction),
m_visitedLinkColor.interpolateTo(color->m_visitedLinkColor, fraction));
}
PassRefPtr<AnimatableValue> AnimatableColor::addWith(const AnimatableValue* value) const
{
const AnimatableColor* color = toAnimatableColor(value);
return create(m_color.addWith(color->m_color),
m_visitedLinkColor.addWith(color->m_visitedLinkColor));
}
bool AnimatableColor::equalTo(const AnimatableValue* value) const
{
const AnimatableColor* color = toAnimatableColor(value);
return m_color == color->m_color && m_visitedLinkColor == color->m_visitedLinkColor;
}
} // namespace WebCore
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