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36 lines
1.2 KiB
36 lines
1.2 KiB
var util = require("../util");
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function positionNode(node, previousNode, indent, dropCap, align) {
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// caculate the node's horizontal offset DX, dx's type might be number or function
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var displacementX = (typeof indent === "function" ? indent(node) : indent) * node.depth;
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if (!dropCap) {
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try {
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if (node.id === node.parent.children[0].id) {
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node.x += displacementX;
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node.y = previousNode ? previousNode.y : 0;
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return;
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}
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} catch (e) {
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// skip to normal when a node has no parent
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}
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}
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node.x += displacementX;
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if (previousNode) {
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node.y = previousNode.y + util.getHeight(previousNode, node, align);
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if (previousNode.parent && node.parent.id !== previousNode.parent.id) {
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// previous node has different parent
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var prevParent = previousNode.parent;
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var preY = prevParent.y + util.getHeight(prevParent, node, align);
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node.y = preY > node.y ? preY : node.y;
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}
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} else {
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node.y = 0;
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}
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return;
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}
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module.exports = function (root, indent, dropCap, align) {
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var previousNode = null;
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root.eachNode(function (node) {
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positionNode(node, previousNode, indent, dropCap, align);
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previousNode = node;
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});
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};
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