478 lines
15 KiB
JavaScript
478 lines
15 KiB
JavaScript
/*************************************************************************/
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/* library_godot_display.js */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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/*
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* Display Server listeners.
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* Keeps track of registered event listeners so it can remove them on shutdown.
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*/
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const GodotDisplayListeners = {
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$GodotDisplayListeners__deps: ['$GodotOS'],
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$GodotDisplayListeners__postset: 'GodotOS.atexit(function(resolve, reject) { GodotDisplayListeners.clear(); resolve(); });',
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$GodotDisplayListeners: {
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handlers: [],
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has: function (target, event, method, capture) {
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return GodotDisplayListeners.handlers.findIndex(function (e) {
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return e.target === target && e.event === event && e.method === method && e.capture === capture;
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}) !== -1;
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},
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add: function (target, event, method, capture) {
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if (GodotDisplayListeners.has(target, event, method, capture)) {
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return;
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}
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function Handler(p_target, p_event, p_method, p_capture) {
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this.target = p_target;
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this.event = p_event;
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this.method = p_method;
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this.capture = p_capture;
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}
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GodotDisplayListeners.handlers.push(new Handler(target, event, method, capture));
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target.addEventListener(event, method, capture);
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},
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clear: function () {
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GodotDisplayListeners.handlers.forEach(function (h) {
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h.target.removeEventListener(h.event, h.method, h.capture);
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});
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GodotDisplayListeners.handlers.length = 0;
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},
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},
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};
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mergeInto(LibraryManager.library, GodotDisplayListeners);
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/*
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* Drag and drop handler.
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* This is pretty big, but basically detect dropped files on GodotConfig.canvas,
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* process them one by one (recursively for directories), and copies them to
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* the temporary FS path '/tmp/drop-[random]/' so it can be emitted as a godot
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* event (that requires a string array of paths).
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*
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* NOTE: The temporary files are removed after the callback. This means that
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* deferred callbacks won't be able to access the files.
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*/
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const GodotDisplayDragDrop = {
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$GodotDisplayDragDrop__deps: ['$FS', '$GodotFS'],
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$GodotDisplayDragDrop: {
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promises: [],
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pending_files: [],
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add_entry: function (entry) {
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if (entry.isDirectory) {
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GodotDisplayDragDrop.add_dir(entry);
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} else if (entry.isFile) {
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GodotDisplayDragDrop.add_file(entry);
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} else {
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GodotRuntime.error('Unrecognized entry...', entry);
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}
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},
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add_dir: function (entry) {
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GodotDisplayDragDrop.promises.push(new Promise(function (resolve, reject) {
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const reader = entry.createReader();
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reader.readEntries(function (entries) {
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for (let i = 0; i < entries.length; i++) {
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GodotDisplayDragDrop.add_entry(entries[i]);
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}
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resolve();
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});
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}));
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},
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add_file: function (entry) {
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GodotDisplayDragDrop.promises.push(new Promise(function (resolve, reject) {
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entry.file(function (file) {
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const reader = new FileReader();
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reader.onload = function () {
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const f = {
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'path': file.relativePath || file.webkitRelativePath,
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'name': file.name,
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'type': file.type,
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'size': file.size,
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'data': reader.result,
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};
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if (!f['path']) {
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f['path'] = f['name'];
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}
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GodotDisplayDragDrop.pending_files.push(f);
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resolve();
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};
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reader.onerror = function () {
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GodotRuntime.print('Error reading file');
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reject();
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};
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reader.readAsArrayBuffer(file);
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}, function (err) {
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GodotRuntime.print('Error!');
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reject();
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});
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}));
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},
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process: function (resolve, reject) {
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if (GodotDisplayDragDrop.promises.length === 0) {
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resolve();
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return;
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}
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GodotDisplayDragDrop.promises.pop().then(function () {
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setTimeout(function () {
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GodotDisplayDragDrop.process(resolve, reject);
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}, 0);
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});
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},
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_process_event: function (ev, callback) {
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ev.preventDefault();
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if (ev.dataTransfer.items) {
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// Use DataTransferItemList interface to access the file(s)
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for (let i = 0; i < ev.dataTransfer.items.length; i++) {
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const item = ev.dataTransfer.items[i];
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let entry = null;
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if ('getAsEntry' in item) {
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entry = item.getAsEntry();
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} else if ('webkitGetAsEntry' in item) {
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entry = item.webkitGetAsEntry();
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}
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if (entry) {
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GodotDisplayDragDrop.add_entry(entry);
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}
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}
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} else {
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GodotRuntime.error('File upload not supported');
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}
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new Promise(GodotDisplayDragDrop.process).then(function () {
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const DROP = `/tmp/drop-${parseInt(Math.random() * (1 << 30), 10)}/`;
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const drops = [];
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const files = [];
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FS.mkdir(DROP);
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GodotDisplayDragDrop.pending_files.forEach((elem) => {
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const path = elem['path'];
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GodotFS.copy_to_fs(DROP + path, elem['data']);
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let idx = path.indexOf('/');
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if (idx === -1) {
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// Root file
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drops.push(DROP + path);
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} else {
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// Subdir
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const sub = path.substr(0, idx);
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idx = sub.indexOf('/');
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if (idx < 0 && drops.indexOf(DROP + sub) === -1) {
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drops.push(DROP + sub);
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}
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}
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files.push(DROP + path);
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});
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GodotDisplayDragDrop.promises = [];
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GodotDisplayDragDrop.pending_files = [];
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callback(drops);
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const dirs = [DROP.substr(0, DROP.length - 1)];
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// Remove temporary files
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files.forEach(function (file) {
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FS.unlink(file);
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let dir = file.replace(DROP, '');
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let idx = dir.lastIndexOf('/');
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while (idx > 0) {
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dir = dir.substr(0, idx);
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if (dirs.indexOf(DROP + dir) === -1) {
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dirs.push(DROP + dir);
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}
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idx = dir.lastIndexOf('/');
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}
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});
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// Remove dirs.
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dirs.sort(function (a, b) {
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const al = (a.match(/\//g) || []).length;
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const bl = (b.match(/\//g) || []).length;
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if (al > bl) {
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return -1;
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} else if (al < bl) {
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return 1;
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}
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return 0;
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}).forEach(function (dir) {
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FS.rmdir(dir);
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});
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});
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},
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handler: function (callback) {
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return function (ev) {
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GodotDisplayDragDrop._process_event(ev, callback);
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};
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},
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},
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};
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mergeInto(LibraryManager.library, GodotDisplayDragDrop);
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/*
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* Display server cursor helper.
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* Keeps track of cursor status and custom shapes.
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*/
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const GodotDisplayCursor = {
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$GodotDisplayCursor__deps: ['$GodotOS', '$GodotConfig'],
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$GodotDisplayCursor__postset: 'GodotOS.atexit(function(resolve, reject) { GodotDisplayCursor.clear(); resolve(); });',
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$GodotDisplayCursor: {
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shape: 'auto',
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visible: true,
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cursors: {},
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set_style: function (style) {
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GodotConfig.canvas.style.cursor = style;
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},
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set_shape: function (shape) {
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GodotDisplayCursor.shape = shape;
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let css = shape;
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if (shape in GodotDisplayCursor.cursors) {
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const c = GodotDisplayCursor.cursors[shape];
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css = `url("${c.url}") ${c.x} ${c.y}, auto`;
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}
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if (GodotDisplayCursor.visible) {
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GodotDisplayCursor.set_style(css);
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}
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},
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clear: function () {
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GodotDisplayCursor.set_style('');
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GodotDisplayCursor.shape = 'auto';
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GodotDisplayCursor.visible = true;
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Object.keys(GodotDisplayCursor.cursors).forEach(function (key) {
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URL.revokeObjectURL(GodotDisplayCursor.cursors[key]);
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delete GodotDisplayCursor.cursors[key];
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});
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},
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},
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};
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mergeInto(LibraryManager.library, GodotDisplayCursor);
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/**
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* Display server interface.
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*
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* Exposes all the functions needed by DisplayServer implementation.
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*/
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const GodotDisplay = {
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$GodotDisplay__deps: ['$GodotConfig', '$GodotRuntime', '$GodotDisplayCursor', '$GodotDisplayListeners', '$GodotDisplayDragDrop'],
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$GodotDisplay: {
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window_icon: '',
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},
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godot_js_display_is_swap_ok_cancel: function () {
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const win = (['Windows', 'Win64', 'Win32', 'WinCE']);
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const plat = navigator.platform || '';
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if (win.indexOf(plat) !== -1) {
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return 1;
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}
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return 0;
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},
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godot_js_display_alert: function (p_text) {
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window.alert(GodotRuntime.parseString(p_text)); // eslint-disable-line no-alert
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},
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godot_js_display_pixel_ratio_get: function () {
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return window.devicePixelRatio || 1;
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},
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/*
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* Canvas
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*/
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godot_js_display_canvas_focus: function () {
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GodotConfig.canvas.focus();
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},
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godot_js_display_canvas_is_focused: function () {
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return document.activeElement === GodotConfig.canvas;
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},
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godot_js_display_canvas_bounding_rect_position_get: function (r_x, r_y) {
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const brect = GodotConfig.canvas.getBoundingClientRect();
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GodotRuntime.setHeapValue(r_x, brect.x, 'i32');
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GodotRuntime.setHeapValue(r_y, brect.y, 'i32');
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},
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/*
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* Touchscreen
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*/
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godot_js_display_touchscreen_is_available: function () {
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return 'ontouchstart' in window;
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},
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/*
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* Clipboard
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*/
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godot_js_display_clipboard_set: function (p_text) {
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const text = GodotRuntime.parseString(p_text);
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if (!navigator.clipboard || !navigator.clipboard.writeText) {
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return 1;
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}
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navigator.clipboard.writeText(text).catch(function (e) {
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// Setting OS clipboard is only possible from an input callback.
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GodotRuntime.error('Setting OS clipboard is only possible from an input callback for the HTML5 plafrom. Exception:', e);
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});
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return 0;
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},
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godot_js_display_clipboard_get: function (callback) {
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const func = GodotRuntime.get_func(callback);
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try {
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navigator.clipboard.readText().then(function (result) {
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const ptr = GodotRuntime.allocString(result);
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func(ptr);
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GodotRuntime.free(ptr);
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}).catch(function (e) {
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// Fail graciously.
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});
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} catch (e) {
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// Fail graciously.
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}
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},
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/*
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* Window
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*/
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godot_js_display_window_request_fullscreen: function () {
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const canvas = GodotConfig.canvas;
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(canvas.requestFullscreen || canvas.msRequestFullscreen
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|| canvas.mozRequestFullScreen || canvas.mozRequestFullscreen
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|| canvas.webkitRequestFullscreen
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).call(canvas);
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},
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godot_js_display_window_title_set: function (p_data) {
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document.title = GodotRuntime.parseString(p_data);
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},
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godot_js_display_window_icon_set: function (p_ptr, p_len) {
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let link = document.getElementById('-gd-engine-icon');
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if (link === null) {
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link = document.createElement('link');
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link.rel = 'icon';
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link.id = '-gd-engine-icon';
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document.head.appendChild(link);
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}
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const old_icon = GodotDisplay.window_icon;
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const png = new Blob([GodotRuntime.heapCopy(HEAPU8, p_ptr, p_len)], { type: 'image/png' });
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GodotDisplay.window_icon = URL.createObjectURL(png);
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link.href = GodotDisplay.window_icon;
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if (old_icon) {
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URL.revokeObjectURL(old_icon);
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}
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},
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/*
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* Cursor
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*/
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godot_js_display_cursor_set_visible: function (p_visible) {
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const visible = p_visible !== 0;
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if (visible === GodotDisplayCursor.visible) {
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return;
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}
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GodotDisplayCursor.visible = visible;
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if (visible) {
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GodotDisplayCursor.set_shape(GodotDisplayCursor.shape);
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} else {
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GodotDisplayCursor.set_style('none');
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}
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},
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godot_js_display_cursor_is_hidden: function () {
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return !GodotDisplayCursor.visible;
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},
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godot_js_display_cursor_set_shape: function (p_string) {
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GodotDisplayCursor.set_shape(GodotRuntime.parseString(p_string));
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},
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godot_js_display_cursor_set_custom_shape: function (p_shape, p_ptr, p_len, p_hotspot_x, p_hotspot_y) {
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const shape = GodotRuntime.parseString(p_shape);
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const old_shape = GodotDisplayCursor.cursors[shape];
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if (p_len > 0) {
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const png = new Blob([GodotRuntime.heapCopy(HEAPU8, p_ptr, p_len)], { type: 'image/png' });
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const url = URL.createObjectURL(png);
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GodotDisplayCursor.cursors[shape] = {
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url: url,
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x: p_hotspot_x,
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y: p_hotspot_y,
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};
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} else {
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delete GodotDisplayCursor.cursors[shape];
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}
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if (shape === GodotDisplayCursor.shape) {
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GodotDisplayCursor.set_shape(GodotDisplayCursor.shape);
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}
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if (old_shape) {
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URL.revokeObjectURL(old_shape.url);
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}
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},
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/*
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* Listeners
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*/
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godot_js_display_notification_cb: function (callback, p_enter, p_exit, p_in, p_out) {
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const canvas = GodotConfig.canvas;
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const func = GodotRuntime.get_func(callback);
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const notif = [p_enter, p_exit, p_in, p_out];
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['mouseover', 'mouseleave', 'focus', 'blur'].forEach(function (evt_name, idx) {
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GodotDisplayListeners.add(canvas, evt_name, function () {
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func.bind(null, notif[idx]);
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}, true);
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});
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},
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godot_js_display_paste_cb: function (callback) {
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const func = GodotRuntime.get_func(callback);
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GodotDisplayListeners.add(window, 'paste', function (evt) {
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const text = evt.clipboardData.getData('text');
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const ptr = GodotRuntime.allocString(text);
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func(ptr);
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GodotRuntime.free(ptr);
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}, false);
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},
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godot_js_display_drop_files_cb: function (callback) {
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const func = GodotRuntime.get_func(callback);
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const dropFiles = function (files) {
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const args = files || [];
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if (!args.length) {
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return;
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}
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const argc = args.length;
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const argv = GodotRuntime.allocStringArray(args);
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func(argv, argc);
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GodotRuntime.freeStringArray(argv, argc);
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};
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const canvas = GodotConfig.canvas;
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GodotDisplayListeners.add(canvas, 'dragover', function (ev) {
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// Prevent default behavior (which would try to open the file(s))
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ev.preventDefault();
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}, false);
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GodotDisplayListeners.add(canvas, 'drop', GodotDisplayDragDrop.handler(dropFiles));
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},
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};
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autoAddDeps(GodotDisplay, '$GodotDisplay');
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mergeInto(LibraryManager.library, GodotDisplay);
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