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- "use strict";
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports["default"] = void 0;
- var _utils = require("@jimp/utils");
- /**
- * Scale the image to the given width and height keeping the aspect ratio. Some parts of the image may be letter boxed.
- * @param {number} w the width to resize the image to
- * @param {number} h the height to resize the image to
- * @param {number} alignBits (optional) A bitmask for horizontal and vertical alignment
- * @param {string} mode (optional) a scaling method (e.g. Jimp.RESIZE_BEZIER)
- * @param {function(Error, Jimp)} cb (optional) a callback for when complete
- * @returns {Jimp} this for chaining of methods
- */
- var _default = function _default() {
- return {
- contain: function contain(w, h, alignBits, mode, cb) {
- if (typeof w !== 'number' || typeof h !== 'number') {
- return _utils.throwError.call(this, 'w and h must be numbers', cb);
- } // permit any sort of optional parameters combination
- if (typeof alignBits === 'string') {
- if (typeof mode === 'function' && typeof cb === 'undefined') cb = mode;
- mode = alignBits;
- alignBits = null;
- }
- if (typeof alignBits === 'function') {
- if (typeof cb === 'undefined') cb = alignBits;
- mode = null;
- alignBits = null;
- }
- if (typeof mode === 'function' && typeof cb === 'undefined') {
- cb = mode;
- mode = null;
- }
- alignBits = alignBits || this.constructor.HORIZONTAL_ALIGN_CENTER | this.constructor.VERTICAL_ALIGN_MIDDLE;
- var hbits = alignBits & (1 << 3) - 1;
- var vbits = alignBits >> 3; // check if more flags than one is in the bit sets
- if (!(hbits !== 0 && !(hbits & hbits - 1) || vbits !== 0 && !(vbits & vbits - 1))) {
- return _utils.throwError.call(this, 'only use one flag per alignment direction', cb);
- }
- var alignH = hbits >> 1; // 0, 1, 2
- var alignV = vbits >> 1; // 0, 1, 2
- var f = w / h > this.bitmap.width / this.bitmap.height ? h / this.bitmap.height : w / this.bitmap.width;
- var c = this.cloneQuiet().scale(f, mode);
- this.resize(w, h, mode);
- this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
- this.bitmap.data.writeUInt32BE(this._background, idx);
- });
- this.blit(c, (this.bitmap.width - c.bitmap.width) / 2 * alignH, (this.bitmap.height - c.bitmap.height) / 2 * alignV);
- if ((0, _utils.isNodePattern)(cb)) {
- cb.call(this, null, this);
- }
- return this;
- }
- };
- };
- exports["default"] = _default;
- //# sourceMappingURL=index.js.map
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