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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _utils = require("@jimp/utils");
var _default = () => ({
/**
* Blits a source image on to this image
* @param {Jimp} src the source Jimp instance
* @param {number} x the x position to blit the image
* @param {number} y the y position to blit the image
* @param {number} srcx (optional) the x position from which to crop the source image
* @param {number} srcy (optional) the y position from which to crop the source image
* @param {number} srcw (optional) the width to which to crop the source image
* @param {number} srch (optional) the height to which to crop the source image
* @param {function(Error, Jimp)} cb (optional) a callback for when complete
* @returns {Jimp} this for chaining of methods
*/
blit(src, x, y, srcx, srcy, srcw, srch, cb) {
if (!(src instanceof this.constructor)) {
return _utils.throwError.call(this, "The source must be a Jimp image", cb);
}
if (typeof x !== "number" || typeof y !== "number") {
return _utils.throwError.call(this, "x and y must be numbers", cb);
}
if (typeof srcx === "function") {
cb = srcx;
srcx = 0;
srcy = 0;
srcw = src.bitmap.width;
srch = src.bitmap.height;
} else if (typeof srcx === typeof srcy && typeof srcy === typeof srcw && typeof srcw === typeof srch) {
srcx = srcx || 0;
srcy = srcy || 0;
srcw = srcw || src.bitmap.width;
srch = srch || src.bitmap.height;
} else {
return _utils.throwError.call(this, "srcx, srcy, srcw, srch must be numbers", cb);
}
// round input
x = Math.round(x);
y = Math.round(y);
// round input
srcx = Math.round(srcx);
srcy = Math.round(srcy);
srcw = Math.round(srcw);
srch = Math.round(srch);
const maxWidth = this.bitmap.width;
const maxHeight = this.bitmap.height;
const baseImage = this;
src.scanQuiet(srcx, srcy, srcw, srch, function (sx, sy, idx) {
const xOffset = x + sx - srcx;
const yOffset = y + sy - srcy;
if (xOffset >= 0 && yOffset >= 0 && maxWidth - xOffset > 0 && maxHeight - yOffset > 0) {
const dstIdx = baseImage.getPixelIndex(xOffset, yOffset);
const src = {
r: this.bitmap.data[idx],
g: this.bitmap.data[idx + 1],
b: this.bitmap.data[idx + 2],
a: this.bitmap.data[idx + 3]
};
const dst = {
r: baseImage.bitmap.data[dstIdx],
g: baseImage.bitmap.data[dstIdx + 1],
b: baseImage.bitmap.data[dstIdx + 2],
a: baseImage.bitmap.data[dstIdx + 3]
};
baseImage.bitmap.data[dstIdx] = (src.a * (src.r - dst.r) - dst.r + 255 >> 8) + dst.r;
baseImage.bitmap.data[dstIdx + 1] = (src.a * (src.g - dst.g) - dst.g + 255 >> 8) + dst.g;
baseImage.bitmap.data[dstIdx + 2] = (src.a * (src.b - dst.b) - dst.b + 255 >> 8) + dst.b;
baseImage.bitmap.data[dstIdx + 3] = this.constructor.limit255(dst.a + src.a);
}
});
if ((0, _utils.isNodePattern)(cb)) {
cb.call(this, null, this);
}
return this;
}
});
exports.default = _default;
module.exports = exports.default;
module.exports.default = exports.default;
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