1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "SVGTransformableElement.h"
#include "DOMSVGAnimatedTransformList.h"
#include "mozilla/dom/MutationEventBinding.h"
#include "nsContentUtils.h"
#include "nsIFrame.h"
using namespace mozilla::gfx;
namespace mozilla::dom {
already_AddRefed<DOMSVGAnimatedTransformList>
SVGTransformableElement::Transform() {
// We're creating a DOM wrapper, so we must tell GetAnimatedTransformList
// to allocate the DOMSVGAnimatedTransformList if it hasn't already done so:
return DOMSVGAnimatedTransformList::GetDOMWrapper(
GetAnimatedTransformList(DO_ALLOCATE), this);
}
//----------------------------------------------------------------------
// nsIContent methods
nsChangeHint SVGTransformableElement::GetAttributeChangeHint(
const nsAtom* aAttribute, int32_t aModType) const {
nsChangeHint retval =
SVGElement::GetAttributeChangeHint(aAttribute, aModType);
if (aAttribute == nsGkAtoms::transform ||
aAttribute == nsGkAtoms::mozAnimateMotionDummyAttr) {
nsIFrame* frame = GetPrimaryFrame();
retval |= nsChangeHint_InvalidateRenderingObservers;
if (!frame || frame->HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) {
return retval;
}
bool isAdditionOrRemoval = false;
if (aModType == MutationEvent_Binding::ADDITION ||
aModType == MutationEvent_Binding::REMOVAL) {
isAdditionOrRemoval = true;
} else {
MOZ_ASSERT(aModType == MutationEvent_Binding::MODIFICATION,
"Unknown modification type.");
if (!mTransforms || !mTransforms->HasTransform()) {
// New value is empty, treat as removal.
// FIXME: Should we just rely on CreatedOrRemovedOnLastChange?
isAdditionOrRemoval = true;
} else if (mTransforms->CreatedOrRemovedOnLastChange()) {
// Old value was empty, treat as addition.
isAdditionOrRemoval = true;
}
}
if (isAdditionOrRemoval) {
retval |= nsChangeHint_ComprehensiveAddOrRemoveTransform;
} else {
// We just assume the old and new transforms are different.
retval |= nsChangeHint_UpdatePostTransformOverflow |
nsChangeHint_UpdateTransformLayer;
}
}
return retval;
}
bool SVGTransformableElement::IsEventAttributeNameInternal(nsAtom* aName) {
return nsContentUtils::IsEventAttributeName(aName, EventNameType_SVGGraphic);
}
//----------------------------------------------------------------------
// SVGElement overrides
gfxMatrix SVGTransformableElement::PrependLocalTransformsTo(
const gfxMatrix& aMatrix, SVGTransformTypes aWhich) const {
if (aWhich == eChildToUserSpace) {
// We don't have any eUserSpaceToParent transforms. (Sub-classes that do
// must override this function and handle that themselves.)
return aMatrix;
}
return GetUserToParentTransform(mAnimateMotionTransform.get(),
mTransforms.get()) *
aMatrix;
}
const gfx::Matrix* SVGTransformableElement::GetAnimateMotionTransform() const {
return mAnimateMotionTransform.get();
}
void SVGTransformableElement::SetAnimateMotionTransform(
const gfx::Matrix* aMatrix) {
if ((!aMatrix && !mAnimateMotionTransform) ||
(aMatrix && mAnimateMotionTransform &&
aMatrix->FuzzyEquals(*mAnimateMotionTransform))) {
return;
}
bool transformSet = mTransforms && mTransforms->IsExplicitlySet();
bool prevSet = mAnimateMotionTransform || transformSet;
mAnimateMotionTransform =
aMatrix ? MakeUnique<gfx::Matrix>(*aMatrix) : nullptr;
bool nowSet = mAnimateMotionTransform || transformSet;
int32_t modType;
if (prevSet && !nowSet) {
modType = MutationEvent_Binding::REMOVAL;
} else if (!prevSet && nowSet) {
modType = MutationEvent_Binding::ADDITION;
} else {
modType = MutationEvent_Binding::MODIFICATION;
}
DidAnimateTransformList(modType);
nsIFrame* frame = GetPrimaryFrame();
if (frame) {
// If the result of this transform and any other transforms on this frame
// is the identity matrix, then DoApplyRenderingChangeToTree won't handle
// our nsChangeHint_UpdateTransformLayer hint since aFrame->IsTransformed()
// will return false. That's fine, but we still need to schedule a repaint,
// and that won't otherwise happen. Since it's cheap to call SchedulePaint,
// we don't bother to check IsTransformed().
frame->SchedulePaint();
}
}
SVGAnimatedTransformList* SVGTransformableElement::GetAnimatedTransformList(
uint32_t aFlags) {
if (!mTransforms && (aFlags & DO_ALLOCATE)) {
mTransforms = MakeUnique<SVGAnimatedTransformList>();
}
return mTransforms.get();
}
/* static */
gfxMatrix SVGTransformableElement::GetUserToParentTransform(
const gfx::Matrix* aAnimateMotionTransform,
const SVGAnimatedTransformList* aTransforms) {
gfxMatrix result;
if (aAnimateMotionTransform) {
result.PreMultiply(ThebesMatrix(*aAnimateMotionTransform));
}
if (aTransforms) {
result.PreMultiply(aTransforms->GetAnimValue().GetConsolidationMatrix());
}
return result;
}
} // namespace mozilla::dom
|
