neomojimixer/neomojimixer.js

324 lines
9.2 KiB
JavaScript

const NeomojiMixer = (function(NeomojiMixer) {
//global variables
const color_names = [
"blue",
"lightgrey",
"orange",
"red",
"white",
"yellow",
];
let selected_color = "blue";
let color_change_callbacks = [];
//shotnames for HTML elements to interact with
const canvas = document.getElementById("canvas_export");
const export_img = document.getElementById("imageExport");
const neomoji_name = document.getElementById("fullNeomojiName");
//Stats
const stats = document.getElementById("stats");
function onColorChange() {
for (let i = 0; i < color_change_callbacks.length; i++) {
if (color_change_callbacks[i]) {
color_change_callbacks[i]();
}
}
}
function PartHandler(name) {
this.name = name;
this.entries = []; //Arrays to hold the parts
this.entry_indices = []; //Maps selected_index to entries index
this.selected_index = 0; //index_color -> arms.selected_index; index_arms -> arms.entry_indices[arms.selected_index]
this.image_element = document.getElementById(name + "_img");
this.name_element = document.getElementById(name + "_name");
this.button_left = document.getElementById(name + "_left");
this.button_right = document.getElementById(name + "_right");
}
PartHandler.prototype = {
fillArray: function(item) {
let name = item.name;
let url = item.url;
this.entries.push([name, url]); //Two dimensional array, Second dimension holds name on index 0 and url at index 1
},
fillIndices: function() {
for (let i = 0; i < this.entries.length; i++) {
this.entry_indices.push(i); //By default preserve index
}
},
getSelectedEntry: function() {
return this.entries[this.entry_indices[this.selected_index]];
},
setIndex: function(index) {
const modulo = this.entry_indices.length; //Check if index is too big for the array
if (!modulo) {
this.selected_index = 0; //Error
} else {
index %= modulo;
if (index < 0) {
index += modulo;
}
this.selected_index = index;
}
this.redraw();
},
redraw: function() {
const entry = this.getSelectedEntry();
this.image_element.src = "." + entry[1]; //Change URL of picture
//Change name in controls
this.updateOptions();
this.name_element.selectedIndex = this.selected_index;
},
onClickNext: function() {
this.setIndex(this.selected_index + 1);
},
onClickPrev: function() {
this.setIndex(this.selected_index - 1);
},
onChangeDropdown: function() {
this.setIndex(this.name_element.selectedIndex);
},
activateControls: function() {
this.button_left.disabled = false;
this.button_right.disabled = false;
this.name_element.disabled = false;
},
randomize: function() {
this.setIndex(Math.floor(Math.random() * this.entry_indices.length));
},
createExportImage: function() {
const entry = this.getSelectedEntry();
let img = new Image();
img.src = "." + entry[1];
return img;
},
updateOptions: function() {
const options = this.name_element.options;
for (let i = 0; i < this.entry_indices.length; i++) {
const index = this.entry_indices[i];
const entry = this.entries[index];
if (options.length > i && options[i].value == entry[0]) {
continue;
} else {
const option = new Option(entry[0], entry[0], false, this.selected_index == i);
if (this.name_element.length <= i) {
this.name_element.add(option);
} else {
this.name_element.remove(i);
this.name_element.add(option, i);
}
}
}
},
};
function ColoredPartHandler(name) {
PartHandler.call(this, name);
//For all the different colours of the arms there will be each a own array
this.colored_indices = Object.create(null);
for (let i = 0; i < color_names.length; i++) {
this.colored_indices[color_names[i]] = [];
}
this.entry_indices = this.colored_indices[selected_color];
const that = this;
color_change_callbacks.push(function() {
that.onColorChange();
});
}
ColoredPartHandler.prototype = Object.assign(Object.create(PartHandler.prototype), {
constructor: PartHandler,
fillArray: function(item) {
let name = item.name;
let url = item.url;
let color = item.color;
this.entries.push([name, url, color]); //Two dimensional array, Second dimension holds name on index 0, url at index 1, and color at index 2
},
fillIndices: function() {
for (let i = 0; i < this.entries.length; i++) {
const color = this.entries[i][2];
if (color == "") {
//All colors
for (let j in this.colored_indices) {
this.colored_indices[j].push(i);
}
} else {
const indices = this.colored_indices[color];
if (indices == undefined) {
console.log("Cannot register " + this.name + " with unknown color: " + color);
} else {
indices.push(i);
}
}
}
},
onColorChange: function() {
this.entry_indices = this.colored_indices[selected_color];
this.redraw();
},
});
function BodyPartHandler(name) {
PartHandler.call(this, name);
}
BodyPartHandler.prototype = Object.assign(Object.create(PartHandler.prototype), {
constructor: PartHandler,
fillArray: ColoredPartHandler.prototype.fillArray,
setIndex: function(index) {
const modulo = this.entry_indices.length; //Check if index is too big for the array
if (!modulo) {
this.selected_index = 0; //Error
} else {
index %= modulo;
if (index < 0) {
index += modulo;
}
this.selected_index = index;
}
this.redraw();
const entry = this.getSelectedEntry();
selected_color = entry[2]; //Global
onColorChange(); //Global
},
});
const part_handlers = {
body: new BodyPartHandler("body"),
eyes: new PartHandler("eyes"),
mouth: new PartHandler("mouth"),
arms: new ColoredPartHandler("arms"),
};
// Loading the JSON and getting all the available parts
async function getData() {
fetch('./parts.json')
.then(function(response) {
return response.json();
})
.then(function(data) {
loadParts(data);
})
.catch(function(error) {
console.log('An error occurred:', error);
});
}
function loadParts(parts) {
//Load parts into Arrays
for (const i in part_handlers) {
parts.type[i].forEach(function(p) {part_handlers[i].fillArray(p);});
}
//find the indexes of each part of the corresponding color and write those into the color arrays
for (const i in part_handlers) {
part_handlers[i].fillIndices();
}
//Randomize initial view
randomize();
//Show little statistic
var sum = 0;
var variety = 1;
for (const i in part_handlers) {
sum += part_handlers[i].entries.length;
variety *= part_handlers[i].entry_indices.length;
}
stats.innerHTML = "There are " + sum + " Elements available,<br />with " + new Intl.NumberFormat("de-DE").format(variety) + " possible combinations.";
//Activate the buttons after everything is loaded in
for (const i in part_handlers) {
part_handlers[i].activateControls();
}
document.getElementById("random").disabled = false;
document.getElementById("export").disabled = false;
}
function randomize() { //Randomize which parts are shown
for (const i in part_handlers) {
part_handlers[i].randomize();
}
}
function exportImage() { //Export image so it can be saved as one PNG
let ctx=canvas.getContext("2d");
ctx.clearRect(0, 0, canvas.width, canvas.height);
neomoji_name.value = part_handlers.body.getSelectedEntry()[0] + "_" + part_handlers.eyes.getSelectedEntry()[0] + "_" + part_handlers.mouth.getSelectedEntry()[0] + "_" + part_handlers.arms.getSelectedEntry()[0]; //Set name for the emoji to use as the image name and to show as shortcode
let export_layers = [
part_handlers.body.createExportImage(),
part_handlers.eyes.createExportImage(),
part_handlers.mouth.createExportImage(),
part_handlers.arms.createExportImage(),
];
function layerCallback() {
while (export_layers.length) {
const layer = export_layers[0];
if (!layer.complete) {
layer.onload = layerCallback;
return; //Wait to load
}
//Finished waiting
export_layers.shift()
ctx.drawImage(layer, 0, 0, 256, 256);
}
let img = canvas.toDataURL("image/png");
export_img.src = img;
}
setTimeout(layerCallback, 0); //Run asynchronously
export_img.hidden = false;
neomoji_name.hidden = false;
document.getElementById("exportSaveMessage").hidden = false;
}
NeomojiMixer.PartHandler = PartHandler;
NeomojiMixer.ColoredPartHandler = ColoredPartHandler;
NeomojiMixer.BodyPartHandler = BodyPartHandler;
NeomojiMixer.color_names = color_names;
NeomojiMixer.color_change_callbacks = color_change_callbacks;
NeomojiMixer.part_handlers = part_handlers;
NeomojiMixer.onColorChange = onColorChange;
NeomojiMixer.getData = getData;
NeomojiMixer.loadParts = loadParts;
NeomojiMixer.randomize = randomize;
NeomojiMixer.exportImage = exportImage;
NeomojiMixer.canvas = canvas;
NeomojiMixer.export_img = export_img;
NeomojiMixer.neomoji_name = neomoji_name;
NeomojiMixer.stats = stats;
Object.defineProperty(NeomojiMixer, 'selected_color', {
enumerable: true,
configurable: true,
get: function() {
return selected_color;
},
set: function(value) {
selected_color = value;
onColorChange();
},
});
return NeomojiMixer;
})(window.NeomojiMixer || {});
//Main Programm
document.getElementById("noJSmessage").hidden = true;
NeomojiMixer.getData();