scratch-tree/js/tree.js
2024-10-18 23:36:03 -04:00

152 lines
No EOL
3.7 KiB
JavaScript

let area = document.querySelector('#area-main');
const treeWidth = 2;
const treeHeight = 120;
const magConst = 150;
const itemWidth = 120;
const itemHeight = 90;
let cache = '';
function escapeHtml(unsafe) {
return (unsafe + '')
.replace(/&/g, "&")
.replace(/</g, "&lt;")
.replace(/>/g, "&gt;")
.replace(/"/g, "&quot;")
.replace(/'/g, "&#039;");
}
function genElement(type, area, content, attribs, open = false) {
var directAttribs = attribs.direct || {};
var styleAttribs = attribs.style || {};
var fullStyle = "";
Object.keys(styleAttribs).forEach(function (attrib) {
fullStyle += `${attrib}: ${styleAttribs[attrib]};`
});
directAttribs.style = fullStyle;
var elem = '';
Object.keys(directAttribs).forEach(function (attrib) {
elem += `${escapeHtml(attrib)}="${escapeHtml(directAttribs[attrib])}" `;
});
if (open) {
elem = `<${type} ${elem}>${content}`
} else {
elem = `<${type} ${elem}>${content}</${type}>`
}
cache += elem;
return elem;
}
function genEntry(posEntry, area, fetchData) {
var data = fetchData[posEntry.id] || {};
var x = posEntry.x * magConst;
var y = posEntry.y * treeHeight;
var x2 = x * zoom + mpos[0];
var y2 = y * zoom + mpos[1];
if (y2 < -1000 || y2 > area2.clientHeight+ 1000) return;
if (y > 0) {
genElement('path', area, '', {
'direct': {
'class': 'line',
'd': `M ${x + (itemWidth / 2)} ${y - treeHeight + itemHeight / 2} v ${itemHeight} z`
}
});
}
if (posEntry.offbranch >= 0) {
genElement('path', area, '', {
'direct': {
'class': 'line',
'd': `M ${x + (itemWidth / 2)} ${y + itemHeight / 2} h ${magConst * (posEntry.offbranch)} z`
}
});
}
let a = genElement('a', area, '', {
'direct': {
'href': `https://scratch.mit.edu/projects/${posEntry.id}`,
'class': `${posEntry.visible ? '' : 'red'}`,
}
}, true);
genElement('image', a, '', {
'direct': {
'href': `https://uploads.scratch.mit.edu/get_image/project/${posEntry.id}_1920x1080.png`,
'x': x - 10,
'y': y - 15,
'width': '100'
}
});
cache += '</a>';
let text = [
`${posEntry.name}`,
`${posEntry.y} proj. deep`,
`${(posEntry.date) ? (new Date(posEntry.date.$date) + '').split('GMT')[0] : 'Date not available'}`,
`${posEntry.user}`
];
for (let i in text) {
genElement('text', a, text[i], {
'direct': {
'x': x + 75,
'y': y + 75 + 8 * i
}
});
}
}
async function genTree(id) {
let params = new URLSearchParams(window.location.search);
let treeId = params.get("id").replace(/[^0-9]/g, '');
if (id) treeId = id;
let fetchData = await fetch(`https://scratch.mit.edu/projects/${treeId}/remixtree/bare`)
.then(x => x.json());
let keys = Object.keys(fetchData);
let r = fetchData[fetchData.root_id];
let i = 0;
for (let id of keys) {
if (id == fetchData.root_id || id == 'root_id') continue;
if (!fetchData[id].parent_id && keys.findIndex(x => fetchData[x].children && fetchData[x].children.indexOf(id) != -1) == -1) {
r.children.push(id);
}
i++;
console.log(i)
};
let pos = await main(fetchData);
setInterval(function () {
cache = '';
for (let posEntry of pos) {
genEntry(posEntry, area, fetchData);
}
area.innerHTML = cache;
}, 300)
return pos;
}