OLD | NEW |
(Empty) | |
| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "config.h" |
| 6 #include "core/dom/DOMQuad.h" |
| 7 |
| 8 #include "core/dom/DOMPointInit.h" |
| 9 #include "core/dom/DOMRectInit.h" |
| 10 |
| 11 namespace blink { |
| 12 |
| 13 DOMQuadPoint* DOMQuadPoint::create(const DOMPointInit& point, Member<DOMQuad> qu
ad) |
| 14 { |
| 15 return new DOMQuadPoint(point.x(), point.y(), quad); |
| 16 } |
| 17 |
| 18 DOMQuadPoint* DOMQuadPoint::create(double x, double y, Member<DOMQuad> quad) |
| 19 { |
| 20 return new DOMQuadPoint(x, y, quad); |
| 21 } |
| 22 |
| 23 DOMQuadPoint::DOMQuadPoint(double x, double y, Member<DOMQuad> quad) |
| 24 : DOMPoint(x, y, 0, 1) |
| 25 , m_quad(quad) |
| 26 { |
| 27 } |
| 28 |
| 29 void DOMQuadPoint::setX(double x) |
| 30 { |
| 31 m_x = x; |
| 32 m_quad->updateHorizontalBounds(); |
| 33 } |
| 34 |
| 35 void DOMQuadPoint::setY(double y) |
| 36 { |
| 37 m_y = y; |
| 38 m_quad->updateVerticalBounds(); |
| 39 } |
| 40 |
| 41 DOMQuad* DOMQuad::create(const DOMRectInit& rect) |
| 42 { |
| 43 return new DOMQuad(rect); |
| 44 } |
| 45 |
| 46 DOMQuad* DOMQuad::create(const DOMPointInit& p1, const DOMPointInit& p2, |
| 47 const DOMPointInit& p3, const DOMPointInit& p4) |
| 48 { |
| 49 return new DOMQuad(p1, p2, p3, p4); |
| 50 } |
| 51 |
| 52 DOMQuad::DOMQuad(const DOMRectInit& rect) |
| 53 : m_p1(DOMQuadPoint::create(rect.x(), rect.y(), this)) |
| 54 , m_p2(DOMQuadPoint::create(rect.x() + rect.width(), rect.y(), this)) |
| 55 , m_p3(DOMQuadPoint::create(rect.x() + rect.width(), rect.y() + rect.height(
), this)) |
| 56 , m_p4(DOMQuadPoint::create(rect.x(), rect.y() + rect.height(), this)) |
| 57 , m_bounds(DOMRect::create(rect.x(), rect.y(), rect.width(), rect.height())) |
| 58 { |
| 59 } |
| 60 |
| 61 DOMQuad::DOMQuad(const DOMPointInit& p1, const DOMPointInit& p2, |
| 62 const DOMPointInit& p3, const DOMPointInit& p4) |
| 63 : m_p1(DOMQuadPoint::create(p1, this)) |
| 64 , m_p2(DOMQuadPoint::create(p2, this)) |
| 65 , m_p3(DOMQuadPoint::create(p3, this)) |
| 66 , m_p4(DOMQuadPoint::create(p4, this)) |
| 67 , m_bounds(nullptr) |
| 68 { |
| 69 } |
| 70 |
| 71 DOMRectReadOnly* DOMQuad::bounds() |
| 72 { |
| 73 if (!m_bounds) { |
| 74 m_bounds = DOMRect::create(); |
| 75 updateHorizontalBounds(); |
| 76 updateVerticalBounds(); |
| 77 } |
| 78 |
| 79 return m_bounds; |
| 80 } |
| 81 |
| 82 static inline double min4(double a, double b, double c, double d) |
| 83 { |
| 84 return std::min(std::min(a, b), std::min(c, d)); |
| 85 } |
| 86 |
| 87 static inline double max4(double a, double b, double c, double d) |
| 88 { |
| 89 return std::max(std::max(a, b), std::max(c, d)); |
| 90 } |
| 91 |
| 92 void DOMQuad::updateHorizontalBounds() |
| 93 { |
| 94 double left = min4(m_p1->x(), m_p2->x(), m_p3->x(), m_p4->x()); |
| 95 double right = max4(m_p1->x(), m_p2->x(), m_p3->x(), m_p4->x()); |
| 96 |
| 97 m_bounds->setX(left); |
| 98 m_bounds->setWidth(right - left); |
| 99 } |
| 100 |
| 101 void DOMQuad::updateVerticalBounds() |
| 102 { |
| 103 double top = min4(m_p1->y(), m_p2->y(), m_p3->y(), m_p4->y()); |
| 104 double bottom = max4(m_p1->y(), m_p2->y(), m_p3->y(), m_p4->y()); |
| 105 |
| 106 m_bounds->setY(top); |
| 107 m_bounds->setHeight(bottom - top); |
| 108 } |
| 109 |
| 110 } // namespace blink |
OLD | NEW |