/src/mozilla-central/dom/svg/DOMSVGPoint.h
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1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #ifndef MOZILLA_DOMSVGPOINT_H__ |
8 | | #define MOZILLA_DOMSVGPOINT_H__ |
9 | | |
10 | | #include "DOMSVGPointList.h" |
11 | | #include "mozilla/gfx/2D.h" |
12 | | #include "nsDebug.h" |
13 | | #include "nsISVGPoint.h" |
14 | | #include "SVGPoint.h" |
15 | | #include "mozilla/Attributes.h" |
16 | | #include "mozilla/FloatingPoint.h" |
17 | | |
18 | | class nsSVGElement; |
19 | | |
20 | | namespace mozilla { |
21 | | |
22 | | namespace dom { |
23 | | class SVGMatrix; |
24 | | } // namespace dom |
25 | | |
26 | | /** |
27 | | * Class DOMSVGPoint |
28 | | * |
29 | | * This class creates the DOM objects that wrap internal SVGPoint objects that |
30 | | * are in an SVGPointList. It is also used to create the objects returned by |
31 | | * SVGSVGElement.createSVGPoint() and other functions that return DOM SVGPoint |
32 | | * objects. |
33 | | * |
34 | | * See the architecture comment in DOMSVGPointList.h for an overview of the |
35 | | * important points regarding these DOM wrapper structures. |
36 | | * |
37 | | * See the architecture comment in DOMSVGLength.h (yes, LENGTH) for an overview |
38 | | * of the important points regarding how this specific class works. |
39 | | */ |
40 | | class DOMSVGPoint final : public nsISVGPoint |
41 | | { |
42 | | friend class AutoChangePointNotifier; |
43 | | |
44 | | typedef mozilla::gfx::Point Point; |
45 | | |
46 | | public: |
47 | | /** |
48 | | * Generic ctor for DOMSVGPoint objects that are created for an attribute. |
49 | | */ |
50 | | DOMSVGPoint(DOMSVGPointList *aList, |
51 | | uint32_t aListIndex, |
52 | | bool aIsAnimValItem) |
53 | | : nsISVGPoint() |
54 | 0 | { |
55 | 0 | mList = aList; |
56 | 0 | mListIndex = aListIndex; |
57 | 0 | mIsAnimValItem = aIsAnimValItem; |
58 | 0 |
|
59 | 0 | // These shifts are in sync with the members. |
60 | 0 | MOZ_ASSERT(aList && aListIndex <= MaxListIndex(), "bad arg"); |
61 | 0 |
|
62 | 0 | MOZ_ASSERT(IndexIsValid(), "Bad index for DOMSVGPoint!"); |
63 | 0 | } |
64 | | |
65 | | explicit DOMSVGPoint(const DOMSVGPoint *aPt = nullptr) |
66 | | : nsISVGPoint() |
67 | 0 | { |
68 | 0 | if (aPt) { |
69 | 0 | mPt = aPt->ToSVGPoint(); |
70 | 0 | } |
71 | 0 | } |
72 | | |
73 | | DOMSVGPoint(float aX, float aY) |
74 | | : nsISVGPoint() |
75 | 0 | { |
76 | 0 | mPt.mX = aX; |
77 | 0 | mPt.mY = aY; |
78 | 0 | } |
79 | | |
80 | | explicit DOMSVGPoint(const Point& aPt) |
81 | | : nsISVGPoint() |
82 | 0 | { |
83 | 0 | mPt.mX = aPt.x; |
84 | 0 | mPt.mY = aPt.y; |
85 | 0 | NS_ASSERTION(IsFinite(mPt.mX) && IsFinite(mPt.mY), |
86 | 0 | "DOMSVGPoint coords are not finite"); |
87 | 0 | } |
88 | | |
89 | | |
90 | | // WebIDL |
91 | | virtual float X() override; |
92 | | virtual void SetX(float aX, ErrorResult& rv) override; |
93 | | virtual float Y() override; |
94 | | virtual void SetY(float aY, ErrorResult& rv) override; |
95 | | virtual already_AddRefed<nsISVGPoint> MatrixTransform(dom::SVGMatrix& matrix) override; |
96 | 0 | nsISupports* GetParentObject() override { |
97 | 0 | return mList; |
98 | 0 | } |
99 | | |
100 | 0 | virtual DOMSVGPoint* Copy() override { |
101 | 0 | return new DOMSVGPoint(this); |
102 | 0 | } |
103 | | |
104 | | protected: |
105 | | |
106 | 0 | nsSVGElement* Element() { |
107 | 0 | return mList->Element(); |
108 | 0 | } |
109 | | }; |
110 | | |
111 | | } // namespace mozilla |
112 | | |
113 | | #endif // MOZILLA_DOMSVGPOINT_H__ |