/src/mozilla-central/dom/base/DOMRect.cpp
Line | Count | Source (jump to first uncovered line) |
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 | | #include "mozilla/dom/DOMRect.h" |
8 | | |
9 | | #include "nsPresContext.h" |
10 | | #include "mozilla/dom/DOMRectListBinding.h" |
11 | | #include "mozilla/dom/DOMRectBinding.h" |
12 | | |
13 | | using namespace mozilla; |
14 | | using namespace mozilla::dom; |
15 | | |
16 | | NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMRectReadOnly, mParent) |
17 | | NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectReadOnly) |
18 | | NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectReadOnly) |
19 | 0 | NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMRectReadOnly) |
20 | 0 | NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY |
21 | 0 | NS_INTERFACE_MAP_ENTRY(nsISupports) |
22 | 0 | NS_INTERFACE_MAP_END |
23 | | |
24 | | JSObject* |
25 | | DOMRectReadOnly::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) |
26 | 0 | { |
27 | 0 | MOZ_ASSERT(mParent); |
28 | 0 | return DOMRectReadOnly_Binding::Wrap(aCx, this, aGivenProto); |
29 | 0 | } |
30 | | |
31 | | already_AddRefed<DOMRectReadOnly> |
32 | | DOMRectReadOnly::Constructor(const GlobalObject& aGlobal, double aX, double aY, |
33 | | double aWidth, double aHeight, ErrorResult& aRv) |
34 | 0 | { |
35 | 0 | RefPtr<DOMRectReadOnly> obj = |
36 | 0 | new DOMRectReadOnly(aGlobal.GetAsSupports(), aX, aY, aWidth, aHeight); |
37 | 0 | return obj.forget(); |
38 | 0 | } |
39 | | |
40 | | // ----------------------------------------------------------------------------- |
41 | | |
42 | | JSObject* |
43 | | DOMRect::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) |
44 | 0 | { |
45 | 0 | MOZ_ASSERT(mParent); |
46 | 0 | return DOMRect_Binding::Wrap(aCx, this, aGivenProto); |
47 | 0 | } |
48 | | |
49 | | already_AddRefed<DOMRect> |
50 | | DOMRect::Constructor(const GlobalObject& aGlobal, double aX, double aY, |
51 | | double aWidth, double aHeight, ErrorResult& aRv) |
52 | 0 | { |
53 | 0 | RefPtr<DOMRect> obj = |
54 | 0 | new DOMRect(aGlobal.GetAsSupports(), aX, aY, aWidth, aHeight); |
55 | 0 | return obj.forget(); |
56 | 0 | } |
57 | | |
58 | | // ----------------------------------------------------------------------------- |
59 | | |
60 | | NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMRectList, mParent, mArray) |
61 | | |
62 | 0 | NS_INTERFACE_TABLE_HEAD(DOMRectList) |
63 | 0 | NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY |
64 | 0 | NS_INTERFACE_TABLE0(DOMRectList) |
65 | 0 | NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(DOMRectList) |
66 | 0 | NS_INTERFACE_MAP_END |
67 | | |
68 | | NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectList) |
69 | | NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectList) |
70 | | |
71 | | JSObject* |
72 | | DOMRectList::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) |
73 | 0 | { |
74 | 0 | return mozilla::dom::DOMRectList_Binding::Wrap(cx, this, aGivenProto); |
75 | 0 | } |
76 | | |
77 | | static double |
78 | | RoundFloat(double aValue) |
79 | 0 | { |
80 | 0 | return floor(aValue + 0.5); |
81 | 0 | } |
82 | | |
83 | | void |
84 | | DOMRect::SetLayoutRect(const nsRect& aLayoutRect) |
85 | 0 | { |
86 | 0 | double scale = 65536.0; |
87 | 0 | // Round to the nearest 1/scale units. We choose scale so it can be represented |
88 | 0 | // exactly by machine floating point. |
89 | 0 | double scaleInv = 1/scale; |
90 | 0 | double t2pScaled = scale/AppUnitsPerCSSPixel(); |
91 | 0 | double x = RoundFloat(aLayoutRect.x*t2pScaled)*scaleInv; |
92 | 0 | double y = RoundFloat(aLayoutRect.y*t2pScaled)*scaleInv; |
93 | 0 | SetRect(x, y, RoundFloat(aLayoutRect.XMost()*t2pScaled)*scaleInv - x, |
94 | 0 | RoundFloat(aLayoutRect.YMost()*t2pScaled)*scaleInv - y); |
95 | 0 | } |