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iconlaunch - Better performance by less array accesses

pull/2895/head
Martin Boonk 2023-07-22 12:02:34 +02:00
parent 0eea248390
commit 64238f4ec0
1 changed files with 30 additions and 13 deletions
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37
apps/iconlaunch/app.js
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@ -9,7 +9,6 @@
timeOut:"Off"
}, s.readJSON("iconlaunch.json", true) || {});
if (!settings.fullscreen) {
Bangle.loadWidgets();
Bangle.drawWidgets();
@ -34,6 +33,17 @@
s.writeJSON("iconlaunch.cache.json", launchCache);
}
// cache items
let count = 0;
launchCache.items = [];
for (let c of launchCache.apps){
let i = Math.floor(count/3);
if (!launchCache.items[i])
launchCache.items.push([]);
launchCache.items[Math.floor(count/3)].push(c);
count++;
}
let selectedItem = -1;
const R = Bangle.appRect;
const iconSize = 48;
@ -42,18 +52,26 @@
const itemSize = iconSize + whitespace;
let drawItem = function(itemI, r) {
let t = Date.now();
g.clearRect(r.x, r.y, r.x + r.w - 1, r.y + r.h - 1);
let x = 0;
for (let i = itemI * appsN; i < appsN * (itemI + 1); i++) {
if (!launchCache.apps[i]) break;
let firstApp = itemI * appsN;
let numberOfApps = appsN * (itemI + 1);
let apps = launchCache.items[itemI];
let i = firstApp - 1;
let selectedApp;
let currentApp;
for (currentApp of apps) {
i++;
x += whitespace;
if (!launchCache.apps[i].icon) {
if (!currentApp.icon) {
g.setFontAlign(0, 0, 0).setFont("12x20:2").drawString("?", x + r.x + iconSize / 2, r.y + iconSize / 2);
} else {
if (!launchCache.apps[i].icondata) launchCache.apps[i].icondata = s.read(launchCache.apps[i].icon);
g.drawImage(launchCache.apps[i].icondata, x + r.x, r.y);
if (!currentApp.icondata) currentApp.icondata = s.read(currentApp.icon);
g.drawImage(currentApp.icondata, x + r.x, r.y);
}
if (selectedItem == i) {
selectedApp = currentApp;
g.drawRect(
x + r.x - 1,
r.y - 1,
@ -63,13 +81,12 @@
}
x += iconSize;
}
drawText(itemI, r.y);
if (selectedApp) drawText(itemI, r.y, selectedApp);
};
let drawText = function(i, appY) {
const selectedApp = launchCache.apps[selectedItem];
let drawText = function(i, appY, selectedApp) {
const idy = (selectedItem - (selectedItem % 3)) / 3;
if (!selectedApp || i != idy) return;
if (i != idy) return;
appY = appY + itemSize/2;
g.setFontAlign(0, 0, 0);
g.setFont("12x20");