yeet

node_modules/@jimp/plugin-crop/dist/index.js

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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports["default"] = pluginCrop;
+
+var _typeof2 = _interopRequireDefault(require("@babel/runtime/helpers/typeof"));
+
+var _utils = require("@jimp/utils");
+
+/* eslint-disable no-labels */
+function pluginCrop(event) {
+  /**
+   * Crops the image at a given point to a give size
+   * @param {number} x the x coordinate to crop form
+   * @param {number} y the y coordinate to crop form
+   * @param w the width of the crop region
+   * @param h the height of the crop region
+   * @param {function(Error, Jimp)} cb (optional) a callback for when complete
+   * @returns {Jimp} this for chaining of methods
+   */
+  event('crop', function (x, y, w, h, cb) {
+    if (typeof x !== 'number' || typeof y !== 'number') return _utils.throwError.call(this, 'x and y must be numbers', cb);
+    if (typeof w !== 'number' || typeof h !== 'number') return _utils.throwError.call(this, 'w and h must be numbers', cb); // round input
+
+    x = Math.round(x);
+    y = Math.round(y);
+    w = Math.round(w);
+    h = Math.round(h);
+
+    if (x === 0 && w === this.bitmap.width) {
+      // shortcut
+      var start = w * y + x << 2;
+      var end = start + h * w << 2;
+      this.bitmap.data = this.bitmap.data.slice(start, end);
+    } else {
+      var bitmap = Buffer.allocUnsafe(w * h * 4);
+      var offset = 0;
+      this.scanQuiet(x, y, w, h, function (x, y, idx) {
+        var data = this.bitmap.data.readUInt32BE(idx, true);
+        bitmap.writeUInt32BE(data, offset, true);
+        offset += 4;
+      });
+      this.bitmap.data = bitmap;
+    }
+
+    this.bitmap.width = w;
+    this.bitmap.height = h;
+
+    if ((0, _utils.isNodePattern)(cb)) {
+      cb.call(this, null, this);
+    }
+
+    return this;
+  });
+  return {
+    "class": {
+      /**
+       * Autocrop same color borders from this image
+       * @param {number} tolerance (optional): a percent value of tolerance for pixels color difference (default: 0.0002%)
+       * @param {boolean} cropOnlyFrames (optional): flag to crop only real frames: all 4 sides of the image must have some border (default: true)
+       * @param {function(Error, Jimp)} cb (optional): a callback for when complete (default: no callback)
+       * @returns {Jimp} this for chaining of methods
+       */
+      autocrop: function autocrop() {
+        var w = this.bitmap.width;
+        var h = this.bitmap.height;
+        var minPixelsPerSide = 1; // to avoid cropping completely the image, resulting in an invalid 0 sized image
+
+        var cb; // callback
+
+        var leaveBorder = 0; // Amount of pixels in border to leave
+
+        var tolerance = 0.0002; // percent of color difference tolerance (default value)
+
+        var cropOnlyFrames = true; // flag to force cropping only if the image has a real "frame"
+        // i.e. all 4 sides have some border (default value)
+
+        var cropSymmetric = false; // flag to force cropping top be symmetric.
+        // i.e. north and south / east and west are cropped by the same value
+        // parse arguments
+
+        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+          args[_key] = arguments[_key];
+        }
+
+        for (var a = 0, len = args.length; a < len; a++) {
+          if (typeof args[a] === 'number') {
+            // tolerance value passed
+            tolerance = args[a];
+          }
+
+          if (typeof args[a] === 'boolean') {
+            // cropOnlyFrames value passed
+            cropOnlyFrames = args[a];
+          }
+
+          if (typeof args[a] === 'function') {
+            // callback value passed
+            cb = args[a];
+          }
+
+          if ((0, _typeof2["default"])(args[a]) === 'object') {
+            // config object passed
+            var config = args[a];
+
+            if (typeof config.tolerance !== 'undefined') {
+              tolerance = config.tolerance;
+            }
+
+            if (typeof config.cropOnlyFrames !== 'undefined') {
+              cropOnlyFrames = config.cropOnlyFrames;
+            }
+
+            if (typeof config.cropSymmetric !== 'undefined') {
+              cropSymmetric = config.cropSymmetric;
+            }
+
+            if (typeof config.leaveBorder !== 'undefined') {
+              leaveBorder = config.leaveBorder;
+            }
+          }
+        }
+        /**
+         * All borders must be of the same color as the top left pixel, to be cropped.
+         * It should be possible to crop borders each with a different color,
+         * but since there are many ways for corners to intersect, it would
+         * introduce unnecessary complexity to the algorithm.
+         */
+        // scan each side for same color borders
+
+
+        var colorTarget = this.getPixelColor(0, 0); // top left pixel color is the target color
+
+        var rgba1 = this.constructor.intToRGBA(colorTarget); // for north and east sides
+
+        var northPixelsToCrop = 0;
+        var eastPixelsToCrop = 0;
+        var southPixelsToCrop = 0;
+        var westPixelsToCrop = 0; // north side (scan rows from north to south)
+
+        colorTarget = this.getPixelColor(0, 0);
+
+        north: for (var y = 0; y < h - minPixelsPerSide; y++) {
+          for (var x = 0; x < w; x++) {
+            var colorXY = this.getPixelColor(x, y);
+            var rgba2 = this.constructor.intToRGBA(colorXY);
+
+            if (this.constructor.colorDiff(rgba1, rgba2) > tolerance) {
+              // this pixel is too distant from the first one: abort this side scan
+              break north;
+            }
+          } // this row contains all pixels with the same color: increment this side pixels to crop
+
+
+          northPixelsToCrop++;
+        } // east side (scan columns from east to west)
+
+
+        colorTarget = this.getPixelColor(w, 0);
+
+        east: for (var _x = 0; _x < w - minPixelsPerSide; _x++) {
+          for (var _y = 0 + northPixelsToCrop; _y < h; _y++) {
+            var _colorXY = this.getPixelColor(_x, _y);
+
+            var _rgba = this.constructor.intToRGBA(_colorXY);
+
+            if (this.constructor.colorDiff(rgba1, _rgba) > tolerance) {
+              // this pixel is too distant from the first one: abort this side scan
+              break east;
+            }
+          } // this column contains all pixels with the same color: increment this side pixels to crop
+
+
+          eastPixelsToCrop++;
+        } // south side (scan rows from south to north)
+
+
+        colorTarget = this.getPixelColor(0, h);
+
+        south: for (var _y2 = h - 1; _y2 >= northPixelsToCrop + minPixelsPerSide; _y2--) {
+          for (var _x2 = w - eastPixelsToCrop - 1; _x2 >= 0; _x2--) {
+            var _colorXY2 = this.getPixelColor(_x2, _y2);
+
+            var _rgba2 = this.constructor.intToRGBA(_colorXY2);
+
+            if (this.constructor.colorDiff(rgba1, _rgba2) > tolerance) {
+              // this pixel is too distant from the first one: abort this side scan
+              break south;
+            }
+          } // this row contains all pixels with the same color: increment this side pixels to crop
+
+
+          southPixelsToCrop++;
+        } // west side (scan columns from west to east)
+
+
+        colorTarget = this.getPixelColor(w, h);
+
+        west: for (var _x3 = w - 1; _x3 >= 0 + eastPixelsToCrop + minPixelsPerSide; _x3--) {
+          for (var _y3 = h - 1; _y3 >= 0 + northPixelsToCrop; _y3--) {
+            var _colorXY3 = this.getPixelColor(_x3, _y3);
+
+            var _rgba3 = this.constructor.intToRGBA(_colorXY3);
+
+            if (this.constructor.colorDiff(rgba1, _rgba3) > tolerance) {
+              // this pixel is too distant from the first one: abort this side scan
+              break west;
+            }
+          } // this column contains all pixels with the same color: increment this side pixels to crop
+
+
+          westPixelsToCrop++;
+        } // decide if a crop is needed
+
+
+        var doCrop = false; // apply leaveBorder
+
+        westPixelsToCrop -= leaveBorder;
+        eastPixelsToCrop -= leaveBorder;
+        northPixelsToCrop -= leaveBorder;
+        southPixelsToCrop -= leaveBorder;
+
+        if (cropSymmetric) {
+          var horizontal = Math.min(eastPixelsToCrop, westPixelsToCrop);
+          var vertical = Math.min(northPixelsToCrop, southPixelsToCrop);
+          westPixelsToCrop = horizontal;
+          eastPixelsToCrop = horizontal;
+          northPixelsToCrop = vertical;
+          southPixelsToCrop = vertical;
+        } // make sure that crops are >= 0
+
+
+        westPixelsToCrop = westPixelsToCrop >= 0 ? westPixelsToCrop : 0;
+        eastPixelsToCrop = eastPixelsToCrop >= 0 ? eastPixelsToCrop : 0;
+        northPixelsToCrop = northPixelsToCrop >= 0 ? northPixelsToCrop : 0;
+        southPixelsToCrop = southPixelsToCrop >= 0 ? southPixelsToCrop : 0; // safety checks
+
+        var widthOfRemainingPixels = w - (westPixelsToCrop + eastPixelsToCrop);
+        var heightOfRemainingPixels = h - (southPixelsToCrop + northPixelsToCrop);
+
+        if (cropOnlyFrames) {
+          // crop image if all sides should be cropped
+          doCrop = eastPixelsToCrop !== 0 && northPixelsToCrop !== 0 && westPixelsToCrop !== 0 && southPixelsToCrop !== 0;
+        } else {
+          // crop image if at least one side should be cropped
+          doCrop = eastPixelsToCrop !== 0 || northPixelsToCrop !== 0 || westPixelsToCrop !== 0 || southPixelsToCrop !== 0;
+        }
+
+        if (doCrop) {
+          // do the real crop
+          this.crop(eastPixelsToCrop, northPixelsToCrop, widthOfRemainingPixels, heightOfRemainingPixels);
+        }
+
+        if ((0, _utils.isNodePattern)(cb)) {
+          cb.call(this, null, this);
+        }
+
+        return this;
+      }
+    }
+  };
+}
+
+module.exports = exports.default;
+//# sourceMappingURL=index.js.map