You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
1.2 KiB
40 lines
1.2 KiB
const util = require("../util");
|
|
|
|
function positionNode(node, previousNode, indent, dropCap, align) {
|
|
// caculate the node's horizontal offset DX, dx's type might be number or function
|
|
const displacementX =
|
|
(typeof indent === "function" ? indent(node) : indent) * node.depth;
|
|
|
|
if (!dropCap) {
|
|
try {
|
|
if (node.id === node.parent.children[0].id) {
|
|
node.x += displacementX;
|
|
node.y = previousNode ? previousNode.y : 0;
|
|
return;
|
|
}
|
|
} catch (e) {
|
|
// skip to normal when a node has no parent
|
|
}
|
|
}
|
|
|
|
node.x += displacementX;
|
|
if (previousNode) {
|
|
node.y = previousNode.y + util.getHeight(previousNode, node, align);
|
|
if (previousNode.parent && node.parent.id !== previousNode.parent.id) {
|
|
// previous node has different parent
|
|
const prevParent = previousNode.parent;
|
|
const preY = prevParent.y + util.getHeight(prevParent, node, align);
|
|
node.y = preY > node.y ? preY : node.y;
|
|
}
|
|
} else {
|
|
node.y = 0;
|
|
}
|
|
return;
|
|
}
|
|
module.exports = (root, indent, dropCap, align) => {
|
|
let previousNode = null;
|
|
root.eachNode((node) => {
|
|
positionNode(node, previousNode, indent, dropCap, align);
|
|
previousNode = node;
|
|
});
|
|
};
|
|
|