-
Notifications
You must be signed in to change notification settings - Fork 16
Expand file tree
/
Copy pathFamilyMargins.js
More file actions
142 lines (119 loc) · 4.23 KB
/
Copy pathFamilyMargins.js
File metadata and controls
142 lines (119 loc) · 4.23 KB
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
export default function FamilyMargins() {
this.items = [];
function Margin(left, right, leftIndex, rightIndex) {
this.left = left;
this.right = right;
this.leftIndex = leftIndex;
this.rightIndex = rightIndex;
}
this.add = function (arg0, arg1, arg2, arg3) {
switch (arguments.length) {
case 2:
this.items.push(new Margin(-arg0 / 2, arg0 / 2, arg1, arg1));
break;
case 4:
this.items.push(new Margin(arg0, arg1, arg2, arg3));
break;
}
};
this.merge = function (from, interval) {
var distance = this.getDistanceTo(from);
var leftOffset = 0;
var rightOffset = 0;
var len1 = this.items.length;
var len2 = from.items.length;
var min = Math.min(len1, len2);
var max = Math.max(len1, len2);
for (var index = 0; index < min; index += 1) {
var leftMargin = this.items[len1 - 1 - index];
var rightMargin = from.items[len2 - 1 - index];
if (index === 0) {
var width = (leftMargin.right - leftMargin.left + (distance || 0) + (interval || 0) + rightMargin.right - rightMargin.left);
leftOffset = width / 2 + leftMargin.left;
rightOffset = width / 2 - rightMargin.right;
}
leftMargin.left -= leftOffset;
leftMargin.right = rightMargin.right + rightOffset;
leftMargin.rightIndex = rightMargin.rightIndex;
this.items[max - 1 - index] = leftMargin;
}
for (index = min; index < max; index += 1) {
leftMargin = this.items[len1 - 1 - index];
rightMargin = from.items[len2 - 1 - index];
if (leftMargin == null) {
this.items[max - 1 - index] = new Margin(rightMargin.left + rightOffset, rightMargin.right + rightOffset,
rightMargin.leftIndex, rightMargin.rightIndex);
} else {
leftMargin.left -= leftOffset;
leftMargin.right -= leftOffset;
}
}
return distance;
};
this.attach = function (from, interval) {
var distance = this.getDistanceTo(from);
var rightOffset = interval || 0;
var len1 = this.items.length;
var len2 = from.items.length;
var min = Math.min(len1, len2);
var max = Math.max(len1, len2);
for (var index = 0; index < min; index += 1) {
var leftMargin = this.items[len1 - 1 - index];
var rightMargin = from.items[len2 - 1 - index];
if (index === 0) {
rightOffset = (leftMargin.right + (distance || 0) + (interval || 0) - rightMargin.left);
}
leftMargin.right = rightMargin.right + rightOffset;
leftMargin.rightIndex = rightMargin.rightIndex;
this.items[max - 1 - index] = leftMargin;
}
for (index = min; index < max; index += 1) {
leftMargin = this.items[len1 - 1 - index];
if (leftMargin == null) {
rightMargin = from.items[len2 - 1 - index];
this.items[max - 1 - index] = new Margin(rightMargin.left + rightOffset, rightMargin.right + rightOffset,
rightMargin.leftIndex, rightMargin.rightIndex);
}
}
return distance;
};
this.getDistanceTo = function (to) {
var distance = null;
var baseDistance = 0;
var len1 = this.items.length;
var len2 = to.items.length;
var len = Math.min(len1, len2);
if (len > 0) {
for (var index = 0; index < len; index += 1) {
var leftMargins = this.items[len1 - 1 - index];
var rightMargins = to.items[len2 - 1 - index];
if (index === 0) {
baseDistance = leftMargins.right - rightMargins.left;
distance = baseDistance;
} else {
if (leftMargins.rightIndex < rightMargins.leftIndex) {
distance = Math.max(distance, leftMargins.right - rightMargins.left);
}
}
}
distance = distance - baseDistance;
}
return distance;
};
this.loop = function (thisArg, onItem) {
if (onItem != null) {
for (var index = 0, len = this.items.length; index < len; index += 1) {
var margin = this.items[len - 1 - index];
if (onItem.call(thisArg, index, margin.left, margin.right, margin.leftIndex, margin.rightIndex)) {
break;
}
}
}
};
this.getLeft = function (level) {
var maximum = this.items.length - 1;
if (maximum >= level) {
return this.items[maximum - level].left;
}
};
};