@nmmty/lazycanvas
Version:
A simple way to interact with @napi-rs/canvas in an advanced way!
169 lines (168 loc) • 6.94 kB
JavaScript
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Exporter = void 0;
const types_1 = require("../../types");
const LazyUtil_1 = require("../../utils/LazyUtil");
const fs = __importStar(require("fs"));
const utils_1 = require("../../utils/utils");
const _yaml = __importStar(require("js-yaml"));
/**
* Class responsible for exporting a LazyCanvas instance to various formats.
*/
class Exporter {
/**
* The LazyCanvas instance to be exported.
*/
canvas;
/**
* Constructs a new Exporter instance.
* @param canvas {LazyCanvas} - The LazyCanvas instance to be exported.
*/
constructor(canvas) {
this.canvas = canvas;
}
/**
* Saves a file to the filesystem.
* @param buffer {any} - The data to be saved.
* @param extension {Extensions} - The file extension.
* @param name {string} - The name of the file (optional).
* @throws {LazyError} If the buffer or extension is not provided.
*/
async saveFile(buffer, extension, name) {
if (!buffer)
throw new LazyUtil_1.LazyError('Buffer must be provided');
if (!extension)
throw new LazyUtil_1.LazyError('Extension must be provided');
fs.writeFileSync(`${name === undefined ? (0, utils_1.generateRandomName)() : name}.${extension}`, buffer);
}
/**
* Exports all layers from the LayersManager as an array of JSON objects.
* @param manager {LayersManager} - The LayersManager instance.
* @returns {any[]} An array of JSON representations of the layers.
*/
exportLayers(manager) {
let arr = [];
for (const layer of Array.from(manager.map.values())) {
arr.push(layer.toJSON());
}
return arr;
}
/**
* Exports the canvas to the specified format.
* @param exportType {AnyExport} - The type of export (e.g., "png", "json").
* @param opts {Object} - Optional settings.
* @param opts.name {string} - The name of the file (optional).
* @param opts.saveAsFile {boolean} - Whether to save the export as a file (optional).
* @returns {Promise<Buffer | SKRSContext2D | Canvas | SvgCanvas | string>} The exported data.
* @throws {LazyError} If the export type is not supported.
*/
async export(exportType, opts) {
switch (exportType) {
case types_1.Export.CTX:
case "ctx":
return await this.canvas.manager.render.render(exportType);
case types_1.Export.SVG:
case "svg":
const svg = await this.canvas.manager.render.render('svg');
if (opts?.saveAsFile) {
await this.saveFile(svg, 'svg', opts.name);
}
return svg;
case types_1.Export.BUFFER:
case "buffer":
const buffer = await this.canvas.manager.render.render('buffer');
if (opts?.saveAsFile) {
await this.saveFile(buffer, 'png', opts.name);
}
return buffer;
case types_1.Export.GIF:
case "gif":
const gif = await this.canvas.manager.render.render('buffer');
if (opts?.saveAsFile) {
await this.saveFile(gif, 'gif', opts.name);
}
return gif;
case types_1.Export.WEBP:
case "webp":
const webp = await this.canvas.manager.render.render('buffer');
if (opts?.saveAsFile) {
await this.saveFile(webp, 'webp', opts.name);
}
return webp;
case types_1.Export.JPEG:
case "jpeg":
const jpeg = await this.canvas.manager.render.render('buffer');
await this.saveFile(jpeg, 'jpeg', opts?.name);
return jpeg;
case types_1.Export.JPG:
case "jpg":
const jpg = await this.canvas.manager.render.render('buffer');
await this.saveFile(jpg, 'jpg', opts?.name);
return jpg;
case types_1.Export.PNG:
case "png":
const png = await this.canvas.manager.render.render('buffer');
await this.saveFile(png, 'png', opts?.name);
return png;
case types_1.Export.JSON:
case "json":
const json = this.syncExport(exportType);
if (opts?.saveAsFile) {
await this.saveFile(JSON.stringify(json), 'json', opts.name);
}
return JSON.stringify(json);
case types_1.Export.CANVAS:
case "canvas":
return await this.canvas.manager.render.render(exportType);
case types_1.Export.YAML:
case "yaml":
const yaml = _yaml.dump(this.syncExport(types_1.Export.JSON));
if (opts?.saveAsFile) {
await this.saveFile(yaml, 'yaml', opts.name);
}
return yaml;
default:
throw new LazyUtil_1.LazyError(`Export type ${exportType} is not supported`);
}
}
/**
* Synchronously exports the canvas to the specified format.
* @param exportType {AnyExport} - The type of export (e.g., "json").
* @returns {IOLazyCanvas | void} The exported data or void if the export type is unsupported.
*/
syncExport(exportType) {
switch (exportType) {
case types_1.Export.JSON:
case "json":
return {
options: this.canvas.options,
animation: this.canvas.manager.animation.options,
layers: this.exportLayers(this.canvas.manager.layers)
};
}
}
}
exports.Exporter = Exporter;