third_party/WebKit/Source/core/style/StyleTransformData.cpp

/*
 * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#include "core/style/StyleTransformData.h"

#include "core/style/ComputedStyle.h"
#include "core/style/DataEquivalency.h"

namespace blink {

StyleTransformData::StyleTransformData()
    : m_operations(ComputedStyle::initialTransform()),
      m_origin(ComputedStyle::initialTransformOrigin()),
      m_motion(ComputedStyle::initialOffsetAnchor(),
               ComputedStyle::initialOffsetPosition(),
               nullptr,
               ComputedStyle::initialOffsetDistance(),
               ComputedStyle::initialOffsetRotation()) {}

StyleTransformData::StyleTransformData(const StyleTransformData& o)
    : RefCounted<StyleTransformData>(),
      m_operations(o.m_operations),
      m_origin(o.m_origin),
      m_motion(o.m_motion),
      m_translate(o.m_translate),
      m_rotate(o.m_rotate),
      m_scale(o.m_scale) {}

bool StyleTransformData::operator==(const StyleTransformData& o) const {
  return m_origin == o.m_origin && m_operations == o.m_operations &&
         m_motion == o.m_motion &&
         dataEquivalent<TransformOperation>(m_translate, o.m_translate) &&
         dataEquivalent<TransformOperation>(m_rotate, o.m_rotate) &&
         dataEquivalent<TransformOperation>(m_scale, o.m_scale);
}

bool StyleTransformData::has3DTransform() const {
  return m_operations.has3DOperation() ||
         (m_translate && m_translate->z() != 0) ||
         (m_rotate && (m_rotate->x() != 0 || m_rotate->y() != 0)) ||
         (m_scale && m_scale->z() != 1);
}

}  // namespace blink