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
|
/* -*- 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 "GridTracks.h"
#include "GridDimension.h"
#include "GridTrack.h"
#include "mozilla/dom/GridBinding.h"
#include "nsGridContainerFrame.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(GridTracks, mParent, mTracks)
NS_IMPL_CYCLE_COLLECTING_ADDREF(GridTracks)
NS_IMPL_CYCLE_COLLECTING_RELEASE(GridTracks)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(GridTracks)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
GridTracks::GridTracks(GridDimension *aParent)
: mParent(aParent)
{
MOZ_ASSERT(aParent,
"Should never be instantiated with a null GridDimension");
}
GridTracks::~GridTracks()
{
}
JSObject*
GridTracks::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return GridTracksBinding::Wrap(aCx, this, aGivenProto);
}
uint32_t
GridTracks::Length() const
{
return mTracks.Length();
}
GridTrack*
GridTracks::Item(uint32_t aIndex)
{
return mTracks.SafeElementAt(aIndex);
}
GridTrack*
GridTracks::IndexedGetter(uint32_t aIndex,
bool& aFound)
{
aFound = aIndex < mTracks.Length();
if (!aFound) {
return nullptr;
}
return mTracks[aIndex];
}
void
GridTracks::SetTrackInfo(const ComputedGridTrackInfo* aTrackInfo)
{
// rebuild the tracks based on aTrackInfo
mTracks.Clear();
if (!aTrackInfo) {
return;
}
nscoord lastTrackEdge = 0;
uint32_t repeatIndex = 0;
auto AppendRemovedAutoFits = [this, &aTrackInfo, &lastTrackEdge,
&repeatIndex]()
{
uint32_t numRepeatTracks = aTrackInfo->mRemovedRepeatTracks.Length();
// Add in removed auto-fit tracks
while (repeatIndex < numRepeatTracks &&
aTrackInfo->mRemovedRepeatTracks[repeatIndex]) {
RefPtr<GridTrack> track = new GridTrack(this);
mTracks.AppendElement(track);
track->SetTrackValues(
nsPresContext::AppUnitsToDoubleCSSPixels(lastTrackEdge),
nsPresContext::AppUnitsToDoubleCSSPixels(0),
GridDeclaration::Explicit,
GridTrackState::Removed
);
repeatIndex++;
}
repeatIndex++;
};
for (size_t i = aTrackInfo->mStartFragmentTrack;
i < aTrackInfo->mEndFragmentTrack;
i++) {
if (i >= aTrackInfo->mRepeatFirstTrack) {
// Append removed auto-fit tracks, if appropriate. The
// AppendRemovedAutoFits function exits early once it has been called
// aTrackInfo->mRemovedRepeatTracks.Length() times -- a check we don't
// replicate here or at subsequent calling sites.
AppendRemovedAutoFits();
}
RefPtr<GridTrack> track = new GridTrack(this);
mTracks.AppendElement(track);
track->SetTrackValues(
nsPresContext::AppUnitsToDoubleCSSPixels(aTrackInfo->mPositions[i]),
nsPresContext::AppUnitsToDoubleCSSPixels(aTrackInfo->mSizes[i]),
(
// Implicit if index is before the first explicit track, or after
// the last explicit track.
(i < aTrackInfo->mNumLeadingImplicitTracks) ||
(i >= aTrackInfo->mNumLeadingImplicitTracks +
aTrackInfo->mNumExplicitTracks) ?
GridDeclaration::Implicit :
GridDeclaration::Explicit
),
GridTrackState(aTrackInfo->mStates[i])
);
lastTrackEdge = aTrackInfo->mPositions[i] + aTrackInfo->mSizes[i];
}
// Append any trailing removed auto-fit tracks.
AppendRemovedAutoFits();
}
} // namespace dom
} // namespace mozilla
|
