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