82 lines
3.1 KiB
JavaScript
82 lines
3.1 KiB
JavaScript
//"use strict";
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var LibraryPlatformEmscripten = {
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$RPE: {
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powerStateChange: function(e) {
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_update_power_state(true, Number.isFinite(e.target.dischargingTime) ? e.target.dischargingTime : 0x7FFFFFFF, e.target.level, e.target.charging);
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},
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updateMemoryUsage: function() {
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// unfortunately this will be innacurate in threaded (worker) builds
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var used = BigInt(performance.memory.usedJSHeapSize || 0);
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var limit = BigInt(performance.memory.jsHeapSizeLimit || 0);
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// emscripten currently only supports passing 32 bit ints, so pack it
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_update_memory_usage(Number(used & 0xFFFFFFFFn), Number(used >> 32n), Number(limit & 0xFFFFFFFFn), Number(limit >> 32n));
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setTimeout(RPE.updateMemoryUsage, 5000);
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},
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command_queue: [],
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command_reply_queue: []
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},
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PlatformEmscriptenWatchCanvasSizeAndDpr: function(dpr) {
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if (RPE.observer) {
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RPE.observer.unobserve(Module.canvas);
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RPE.observer.observe(Module.canvas);
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return;
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}
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RPE.observer = new ResizeObserver(function(e) {
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var width, height;
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var entry = e.find(i => i.target == Module.canvas);
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if (!entry) return;
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if (entry.devicePixelContentBoxSize) {
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width = entry.devicePixelContentBoxSize[0].inlineSize;
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height = entry.devicePixelContentBoxSize[0].blockSize;
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} else {
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width = Math.round(entry.contentRect.width * window.devicePixelRatio);
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height = Math.round(entry.contentRect.height * window.devicePixelRatio);
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}
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// doubles are too big to pass as an argument to exported functions
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{{{ makeSetValue("dpr", "0", "window.devicePixelRatio", "double") }}};
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_update_canvas_dimensions(width, height, dpr);
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});
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RPE.observer.observe(Module.canvas);
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window.addEventListener("resize", function() {
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RPE.observer.unobserve(Module.canvas);
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RPE.observer.observe(Module.canvas);
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}, false);
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},
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PlatformEmscriptenWatchWindowVisibility: function() {
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document.addEventListener("visibilitychange", function() {
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_update_window_hidden(document.visibilityState == "hidden");
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}, false);
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},
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PlatformEmscriptenPowerStateInit: function() {
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if (!navigator.getBattery) return;
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navigator.getBattery().then(function(battery) {
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battery.addEventListener("chargingchange", RPE.powerStateChange);
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battery.addEventListener("levelchange", RPE.powerStateChange);
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RPE.powerStateChange({target: battery});
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});
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},
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PlatformEmscriptenMemoryUsageInit: function() {
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if (!performance.memory) return;
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RPE.updateMemoryUsage();
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},
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$EmscriptenSendCommand__deps: ["PlatformEmscriptenCommandRaiseFlag"],
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$EmscriptenSendCommand: function(str) {
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RPE.command_queue.push(str);
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_PlatformEmscriptenCommandRaiseFlag();
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},
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$EmscriptenReceiveCommandReply: function() {
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return RPE.command_reply_queue.shift();
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}
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};
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autoAddDeps(LibraryPlatformEmscripten, '$RPE');
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mergeInto(LibraryManager.library, LibraryPlatformEmscripten);
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