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2x chrome editor perf

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ed 2020-05-17 00:49:49 +02:00
parent 2f1baf17d4
commit 92779b3f48
2 changed files with 28 additions and 13 deletions
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2
.vscode/launch.json vendored
View file

@ -9,8 +9,6 @@
"console": "integratedTerminal",
"cwd": "${workspaceFolder}",
"args": [
"-j",
"0",
//"-nw",
"-a",
"ed:wark",

39
copyparty/web/md2.js
View file

@ -19,14 +19,12 @@ var dom_ref = (function () {
// line->scrollpos maps
var map_src = [];
var map_pre = [];
function genmap(dom) {
function genmapq(dom, query) {
var ret = [];
var last_y = -1;
var parent_y = 0;
var parent_n = null;
var nodes = dom.querySelectorAll('*[data-ln]');
var nodes = dom.querySelectorAll(query);
for (var a = 0; a < nodes.length; a++) {
var n = nodes[a];
var ln = parseInt(n.getAttribute('data-ln'));
@ -35,7 +33,7 @@ function genmap(dom) {
var y = 0;
var par = n.offsetParent;
if (par != parent_n) {
if (par && par != parent_n) {
while (par && par != dom) {
y += par.offsetTop;
par = par.offsetParent;
@ -49,7 +47,7 @@ function genmap(dom) {
while (ln > ret.length)
ret.push(null);
var y = parent_y + n.offsetTop;
y = parent_y + n.offsetTop;
if (y <= last_y)
//console.log('awawa');
continue;
@ -60,6 +58,25 @@ function genmap(dom) {
}
return ret;
}
var map_src = [];
var map_pre = [];
function genmap(dom, oldmap) {
var find = nlines;
while (oldmap && find --> 0) {
var tmap = genmapq(dom, '*[data-ln="' + find + '"]');
if (!tmap || !tmap.length)
continue;
var cy = tmap[find];
var oy = parseInt(oldmap[find]);
if (cy + 24 > oy && cy - 24 < oy)
return oldmap;
console.log('map regen', dom.getAttribute('id'), find, oy, cy, oy - cy);
break;
}
return genmapq(dom, '*[data-ln]');
}
// input handler
@ -79,13 +96,13 @@ var draw_md = (function () {
html.push('<span data-ln="' + (a + 1) + '">' + lines[a] + "</span>");
dom_ref.innerHTML = html.join('\n');
map_src = genmap(dom_ref);
map_pre = genmap(dom_pre);
map_src = genmap(dom_ref, map_src);
map_pre = genmap(dom_pre, map_pre);
cls(document.getElementById('save'), 'disabled', src == server_md);
var t1 = new Date().getTime();
delay = t1 - t0 > 150 ? 25 : 1;
delay = t1 - t0 > 100 ? 25 : 1;
}
var timeout = null;
@ -108,8 +125,8 @@ redraw = (function () {
dom_wrap.style.top = y;
dom_swrap.style.top = y;
dom_ref.style.width = getComputedStyle(dom_src).offsetWidth + 'px';
map_src = genmap(dom_ref);
map_pre = genmap(dom_pre);
map_src = genmap(dom_ref, map_src);
map_pre = genmap(dom_pre, map_pre);
dbg(document.body.clientWidth + 'x' + document.body.clientHeight);
}
function setsbs() {