@kedao/finder/lib/utils/image.js

Media manager for Kedao Editor.

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
export const compressImage = (url, width = 1280, height = 800) => __awaiter(void 0, void 0, void 0, function* () {
    return yield new Promise((resolve, reject) => {
        const image = new Image();
        image.src = url;
        image.onerror = function (error) {
            reject(error);
        };
        image.onload = function () {
            try {
                const compressCanvas = document.createElement('canvas');
                const scale = this.width > width || this.height > height
                    ? this.width > this.height
                        ? width / this.width
                        : height / this.height
                    : 1;
                compressCanvas.width = this.width * scale;
                compressCanvas.height = this.height * scale;
                const canvasContext = compressCanvas.getContext('2d');
                canvasContext.drawImage(this, 0, 0, compressCanvas.width, compressCanvas.height);
                resolve({
                    url: compressCanvas.toDataURL('image/png', 1),
                    width: compressCanvas.width,
                    height: compressCanvas.height
                });
            }
            catch (error) {
                reject(error);
            }
        };
    });
});
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