third_party/WebKit/Source/core/dom/DOMQuad.cpp

// Copyright 2016 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.

#include "core/dom/DOMQuad.h"

#include "bindings/core/v8/V8ObjectBuilder.h"
#include "core/dom/DOMPoint.h"
#include "core/dom/DOMQuadInit.h"
#include "core/dom/DOMRect.h"
#include "core/dom/DOMRectInit.h"

namespace blink {

DOMQuad* DOMQuad::create(const DOMPointInit& p1,
                         const DOMPointInit& p2,
                         const DOMPointInit& p3,
                         const DOMPointInit& p4) {
  return new DOMQuad(p1, p2, p3, p4);
}

DOMQuad* DOMQuad::fromRect(const DOMRectInit& other) {
  return new DOMQuad(other.x(), other.y(), other.width(), other.height());
}

DOMQuad* DOMQuad::fromQuad(const DOMQuadInit& other) {
  return new DOMQuad(other.hasP1() ? other.p1() : DOMPointInit(),
                     other.hasP2() ? other.p2() : DOMPointInit(),
                     other.hasP3() ? other.p3() : DOMPointInit(),
                     other.hasP3() ? other.p4() : DOMPointInit());
}

DOMRect* DOMQuad::getBounds() {
  return DOMRect::create(m_left, m_top, m_right - m_left, m_bottom - m_top);
}

void DOMQuad::calculateBounds() {
  m_left = std::min(p1()->x(), p2()->x());
  m_left = std::min(m_left, p3()->x());
  m_left = std::min(m_left, p4()->x());
  m_top = std::min(p1()->y(), p2()->y());
  m_top = std::min(m_top, p3()->y());
  m_top = std::min(m_top, p4()->y());
  m_right = std::max(p1()->x(), p2()->x());
  m_right = std::max(m_right, p3()->x());
  m_right = std::max(m_right, p4()->x());
  m_bottom = std::max(p1()->y(), p2()->y());
  m_bottom = std::max(m_bottom, p3()->y());
  m_bottom = std::max(m_bottom, p4()->y());
}

DOMQuad::DOMQuad(const DOMPointInit& p1,
                 const DOMPointInit& p2,
                 const DOMPointInit& p3,
                 const DOMPointInit& p4)
    : m_p1(DOMPoint::fromPoint(p1)),
      m_p2(DOMPoint::fromPoint(p2)),
      m_p3(DOMPoint::fromPoint(p3)),
      m_p4(DOMPoint::fromPoint(p4)) {
  calculateBounds();
}

DOMQuad::DOMQuad(double x, double y, double width, double height)
    : m_p1(DOMPoint::create(x, y, 0, 1)),
      m_p2(DOMPoint::create(x + width, y, 0, 1)),
      m_p3(DOMPoint::create(x + width, y + height, 0, 1)),
      m_p4(DOMPoint::create(x, y + height, 0, 1)) {
  calculateBounds();
}

ScriptValue DOMQuad::toJSONForBinding(ScriptState* scriptState) const {
  V8ObjectBuilder result(scriptState);
  result.add("p1", p1());
  result.add("p2", p2());
  result.add("p3", p3());
  result.add("p4", p4());
  return result.scriptValue();
}

}  // namespace blink