"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray"));

var _tinycolor = _interopRequireDefault(require("tinycolor2"));

var _utils = require("@jimp/utils");

function applyKernel(im, kernel, x, y) {
  var value = [0, 0, 0];
  var size = (kernel.length - 1) / 2;

  for (var kx = 0; kx < kernel.length; kx += 1) {
    for (var ky = 0; ky < kernel[kx].length; ky += 1) {
      var idx = im.getPixelIndex(x + kx - size, y + ky - size);
      value[0] += im.bitmap.data[idx] * kernel[kx][ky];
      value[1] += im.bitmap.data[idx + 1] * kernel[kx][ky];
      value[2] += im.bitmap.data[idx + 2] * kernel[kx][ky];
    }
  }

  return value;
}

var isDef = function isDef(v) {
  return typeof v !== "undefined" && v !== null;
};

function greyscale(cb) {
  this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
    var grey = parseInt(0.2126 * this.bitmap.data[idx] + 0.7152 * this.bitmap.data[idx + 1] + 0.0722 * this.bitmap.data[idx + 2], 10);
    this.bitmap.data[idx] = grey;
    this.bitmap.data[idx + 1] = grey;
    this.bitmap.data[idx + 2] = grey;
  });

  if ((0, _utils.isNodePattern)(cb)) {
    cb.call(this, null, this);
  }

  return this;
}

function mix(clr, clr2) {
  var p = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 50;
  return {
    r: (clr2.r - clr.r) * (p / 100) + clr.r,
    g: (clr2.g - clr.g) * (p / 100) + clr.g,
    b: (clr2.b - clr.b) * (p / 100) + clr.b
  };
}

function colorFn(actions, cb) {
  var _this = this;

  if (!actions || !Array.isArray(actions)) {
    return _utils.throwError.call(this, "actions must be an array", cb);
  }

  actions = actions.map(function (action) {
    if (action.apply === "xor" || action.apply === "mix") {
      action.params[0] = (0, _tinycolor["default"])(action.params[0]).toRgb();
    }

    return action;
  });
  this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
    var clr = {
      r: _this.bitmap.data[idx],
      g: _this.bitmap.data[idx + 1],
      b: _this.bitmap.data[idx + 2]
    };

    var colorModifier = function colorModifier(i, amount) {
      return _this.constructor.limit255(clr[i] + amount);
    };

    actions.forEach(function (action) {
      if (action.apply === "mix") {
        clr = mix(clr, action.params[0], action.params[1]);
      } else if (action.apply === "tint") {
        clr = mix(clr, {
          r: 255,
          g: 255,
          b: 255
        }, action.params[0]);
      } else if (action.apply === "shade") {
        clr = mix(clr, {
          r: 0,
          g: 0,
          b: 0
        }, action.params[0]);
      } else if (action.apply === "xor") {
        clr = {
          r: clr.r ^ action.params[0].r,
          g: clr.g ^ action.params[0].g,
          b: clr.b ^ action.params[0].b
        };
      } else if (action.apply === "red") {
        clr.r = colorModifier("r", action.params[0]);
      } else if (action.apply === "green") {
        clr.g = colorModifier("g", action.params[0]);
      } else if (action.apply === "blue") {
        clr.b = colorModifier("b", action.params[0]);
      } else {
        var _clr;

        if (action.apply === "hue") {
          action.apply = "spin";
        }

        clr = (0, _tinycolor["default"])(clr);

        if (!clr[action.apply]) {
          return _utils.throwError.call(_this, "action " + action.apply + " not supported", cb);
        }

        clr = (_clr = clr)[action.apply].apply(_clr, (0, _toConsumableArray2["default"])(action.params)).toRgb();
      }
    });
    _this.bitmap.data[idx] = clr.r;
    _this.bitmap.data[idx + 1] = clr.g;
    _this.bitmap.data[idx + 2] = clr.b;
  });

  if ((0, _utils.isNodePattern)(cb)) {
    cb.call(this, null, this);
  }

  return this;
}

var _default = function _default() {
  return {
    /**
     * Adjusts the brightness of the image
     * @param {number} val the amount to adjust the brightness, a number between -1 and +1
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    brightness: function brightness(val, cb) {
      if (typeof val !== "number") {
        return _utils.throwError.call(this, "val must be numbers", cb);
      }

      if (val < -1 || val > +1) {
        return _utils.throwError.call(this, "val must be a number between -1 and +1", cb);
      }

      this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
        if (val < 0.0) {
          this.bitmap.data[idx] *= 1 + val;
          this.bitmap.data[idx + 1] *= 1 + val;
          this.bitmap.data[idx + 2] *= 1 + val;
        } else {
          this.bitmap.data[idx] += (255 - this.bitmap.data[idx]) * val;
          this.bitmap.data[idx + 1] += (255 - this.bitmap.data[idx + 1]) * val;
          this.bitmap.data[idx + 2] += (255 - this.bitmap.data[idx + 2]) * val;
        }
      });

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    },

    /**
     * Adjusts the contrast of the image
     * @param {number} val the amount to adjust the contrast, a number between -1 and +1
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    contrast: function contrast(val, cb) {
      if (typeof val !== "number") {
        return _utils.throwError.call(this, "val must be numbers", cb);
      }

      if (val < -1 || val > +1) {
        return _utils.throwError.call(this, "val must be a number between -1 and +1", cb);
      }

      var factor = (val + 1) / (1 - val);

      function adjust(value) {
        value = Math.floor(factor * (value - 127) + 127);
        return value < 0 ? 0 : value > 255 ? 255 : value;
      }

      this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
        this.bitmap.data[idx] = adjust(this.bitmap.data[idx]);
        this.bitmap.data[idx + 1] = adjust(this.bitmap.data[idx + 1]);
        this.bitmap.data[idx + 2] = adjust(this.bitmap.data[idx + 2]);
      });

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    },

    /**
     * Apply a posterize effect
     * @param {number} n the amount to adjust the contrast, minimum threshold is two
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    posterize: function posterize(n, cb) {
      if (typeof n !== "number") {
        return _utils.throwError.call(this, "n must be numbers", cb);
      }

      if (n < 2) {
        n = 2;
      } // minimum of 2 levels


      this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
        this.bitmap.data[idx] = Math.floor(this.bitmap.data[idx] / 255 * (n - 1)) / (n - 1) * 255;
        this.bitmap.data[idx + 1] = Math.floor(this.bitmap.data[idx + 1] / 255 * (n - 1)) / (n - 1) * 255;
        this.bitmap.data[idx + 2] = Math.floor(this.bitmap.data[idx + 2] / 255 * (n - 1)) / (n - 1) * 255;
      });

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    },

    /**
     * Removes colour from the image using ITU Rec 709 luminance values
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    greyscale: greyscale,
    // Alias of greyscale for our American friends
    grayscale: greyscale,

    /**
     * Multiplies the opacity of each pixel by a factor between 0 and 1
     * @param {number} f A number, the factor by which to multiply the opacity of each pixel
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    opacity: function opacity(f, cb) {
      if (typeof f !== "number") return _utils.throwError.call(this, "f must be a number", cb);
      if (f < 0 || f > 1) return _utils.throwError.call(this, "f must be a number from 0 to 1", cb);
      this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
        var v = this.bitmap.data[idx + 3] * f;
        this.bitmap.data[idx + 3] = v;
      });

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    },

    /**
     * Applies a sepia tone to the image
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    sepia: function sepia(cb) {
      this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
        var red = this.bitmap.data[idx];
        var green = this.bitmap.data[idx + 1];
        var blue = this.bitmap.data[idx + 2];
        red = red * 0.393 + green * 0.769 + blue * 0.189;
        green = red * 0.349 + green * 0.686 + blue * 0.168;
        blue = red * 0.272 + green * 0.534 + blue * 0.131;
        this.bitmap.data[idx] = red < 255 ? red : 255;
        this.bitmap.data[idx + 1] = green < 255 ? green : 255;
        this.bitmap.data[idx + 2] = blue < 255 ? blue : 255;
      });

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    },

    /**
     * Fades each pixel by a factor between 0 and 1
     * @param {number} f A number from 0 to 1. 0 will haven no effect. 1 will turn the image completely transparent.
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    fade: function fade(f, cb) {
      if (typeof f !== "number") {
        return _utils.throwError.call(this, "f must be a number", cb);
      }

      if (f < 0 || f > 1) {
        return _utils.throwError.call(this, "f must be a number from 0 to 1", cb);
      } // this method is an alternative to opacity (which may be deprecated)


      this.opacity(1 - f);

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    },

    /**
     * Adds each element of the image to its local neighbors, weighted by the kernel
     * @param {array} kernel a matrix to weight the neighbors sum
     * @param {number} edgeHandling (optional) define how to sum pixels from outside the border
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    convolution: function convolution(kernel, edgeHandling, cb) {
      if (typeof edgeHandling === "function" && typeof cb === "undefined") {
        cb = edgeHandling;
        edgeHandling = null;
      }

      if (!edgeHandling) {
        edgeHandling = this.constructor.EDGE_EXTEND;
      }

      var newData = Buffer.from(this.bitmap.data);
      var kRows = kernel.length;
      var kCols = kernel[0].length;
      var rowEnd = Math.floor(kRows / 2);
      var colEnd = Math.floor(kCols / 2);
      var rowIni = -rowEnd;
      var colIni = -colEnd;
      var weight;
      var rSum;
      var gSum;
      var bSum;
      var ri;
      var gi;
      var bi;
      var xi;
      var yi;
      var idxi;
      this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
        bSum = 0;
        gSum = 0;
        rSum = 0;

        for (var row = rowIni; row <= rowEnd; row++) {
          for (var col = colIni; col <= colEnd; col++) {
            xi = x + col;
            yi = y + row;
            weight = kernel[row + rowEnd][col + colEnd];
            idxi = this.getPixelIndex(xi, yi, edgeHandling);

            if (idxi === -1) {
              bi = 0;
              gi = 0;
              ri = 0;
            } else {
              ri = this.bitmap.data[idxi + 0];
              gi = this.bitmap.data[idxi + 1];
              bi = this.bitmap.data[idxi + 2];
            }

            rSum += weight * ri;
            gSum += weight * gi;
            bSum += weight * bi;
          }
        }

        if (rSum < 0) {
          rSum = 0;
        }

        if (gSum < 0) {
          gSum = 0;
        }

        if (bSum < 0) {
          bSum = 0;
        }

        if (rSum > 255) {
          rSum = 255;
        }

        if (gSum > 255) {
          gSum = 255;
        }

        if (bSum > 255) {
          bSum = 255;
        }

        newData[idx + 0] = rSum;
        newData[idx + 1] = gSum;
        newData[idx + 2] = bSum;
      });
      this.bitmap.data = newData;

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    },

    /**
     * Set the alpha channel on every pixel to fully opaque
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    opaque: function opaque(cb) {
      this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
        this.bitmap.data[idx + 3] = 255;
      });

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    },

    /**
     * Pixelates the image or a region
     * @param {number} size the size of the pixels
     * @param {number} x (optional) the x position of the region to pixelate
     * @param {number} y (optional) the y position of the region to pixelate
     * @param {number} w (optional) the width of the region to pixelate
     * @param {number} h (optional) the height of the region to pixelate
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    pixelate: function pixelate(size, x, y, w, h, cb) {
      if (typeof x === "function") {
        cb = x;
        h = null;
        w = null;
        y = null;
        x = null;
      } else {
        if (typeof size !== "number") {
          return _utils.throwError.call(this, "size must be a number", cb);
        }

        if (isDef(x) && typeof x !== "number") {
          return _utils.throwError.call(this, "x must be a number", cb);
        }

        if (isDef(y) && typeof y !== "number") {
          return _utils.throwError.call(this, "y must be a number", cb);
        }

        if (isDef(w) && typeof w !== "number") {
          return _utils.throwError.call(this, "w must be a number", cb);
        }

        if (isDef(h) && typeof h !== "number") {
          return _utils.throwError.call(this, "h must be a number", cb);
        }
      }

      var kernel = [[1 / 16, 2 / 16, 1 / 16], [2 / 16, 4 / 16, 2 / 16], [1 / 16, 2 / 16, 1 / 16]];
      x = x || 0;
      y = y || 0;
      w = isDef(w) ? w : this.bitmap.width - x;
      h = isDef(h) ? h : this.bitmap.height - y;
      var source = this.cloneQuiet();
      this.scanQuiet(x, y, w, h, function (xx, yx, idx) {
        xx = size * Math.floor(xx / size);
        yx = size * Math.floor(yx / size);
        var value = applyKernel(source, kernel, xx, yx);
        this.bitmap.data[idx] = value[0];
        this.bitmap.data[idx + 1] = value[1];
        this.bitmap.data[idx + 2] = value[2];
      });

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    },

    /**
     * Applies a convolution kernel to the image or a region
     * @param {array} kernel the convolution kernel
     * @param {number} x (optional) the x position of the region to apply convolution to
     * @param {number} y (optional) the y position of the region to apply convolution to
     * @param {number} w (optional) the width of the region to apply convolution to
     * @param {number} h (optional) the height of the region to apply convolution to
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    convolute: function convolute(kernel, x, y, w, h, cb) {
      if (!Array.isArray(kernel)) return _utils.throwError.call(this, "the kernel must be an array", cb);

      if (typeof x === "function") {
        cb = x;
        x = null;
        y = null;
        w = null;
        h = null;
      } else {
        if (isDef(x) && typeof x !== "number") {
          return _utils.throwError.call(this, "x must be a number", cb);
        }

        if (isDef(y) && typeof y !== "number") {
          return _utils.throwError.call(this, "y must be a number", cb);
        }

        if (isDef(w) && typeof w !== "number") {
          return _utils.throwError.call(this, "w must be a number", cb);
        }

        if (isDef(h) && typeof h !== "number") {
          return _utils.throwError.call(this, "h must be a number", cb);
        }
      }

      var ksize = (kernel.length - 1) / 2;
      x = isDef(x) ? x : ksize;
      y = isDef(y) ? y : ksize;
      w = isDef(w) ? w : this.bitmap.width - x;
      h = isDef(h) ? h : this.bitmap.height - y;
      var source = this.cloneQuiet();
      this.scanQuiet(x, y, w, h, function (xx, yx, idx) {
        var value = applyKernel(source, kernel, xx, yx);
        this.bitmap.data[idx] = this.constructor.limit255(value[0]);
        this.bitmap.data[idx + 1] = this.constructor.limit255(value[1]);
        this.bitmap.data[idx + 2] = this.constructor.limit255(value[2]);
      });

      if ((0, _utils.isNodePattern)(cb)) {
        cb.call(this, null, this);
      }

      return this;
    },

    /**
     * Apply multiple color modification rules
     * @param {array} actions list of color modification rules, in following format: { apply: '<rule-name>', params: [ <rule-parameters> ]  }
     * @param {function(Error, Jimp)} cb (optional) a callback for when complete
     * @returns {Jimp }this for chaining of methods
     */
    color: colorFn,
    colour: colorFn
  };
};

exports["default"] = _default;
module.exports = exports.default;
//# sourceMappingURL=index.js.map