react-rel-pdfviewer-wrapper/dist/util.js

react pdfviewer wrapper

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.openFullScreen = exports.mydelay = exports.hexToRgb = exports.getMedian = exports.getFileAsArrayBuffer = exports.getCanvasImagePngBuffer = exports.getCanvasImageArrayBuffer = exports.findCanvasInChildren = exports.closeFullscreen = void 0;
const getCanvasImageArrayBuffer = canvas => {
  const context = canvas.getContext('2d');
  const imageData = context.getImageData(0, 0, canvas.width, canvas.height); // 캔버스의 이미지 데이터를 가져옴

  const {
    data,
    width,
    height
  } = imageData;
  const buffer = new ArrayBuffer(data.length); // ArrayBuffer를 생성

  const uint8Array = new Uint8Array(buffer);
  for (let i = 0; i < data.length; i++) {
    uint8Array[i] = data[i]; // 이미지 데이터를 Uint8Array에 복사
  }

  return {
    buffer,
    width,
    height
  };
};
exports.getCanvasImageArrayBuffer = getCanvasImageArrayBuffer;
const mydelay = ms => {
  return new Promise(function (resolve) {
    setTimeout(function () {
      resolve(true);
    }, ms);
  });
};
exports.mydelay = mydelay;
const getCanvasImagePngBuffer = canvas => {
  const dataUrl = canvas.toDataURL('image/png'); // 캔버스를 PNG 데이터 URL로 변환
  const base64Data = dataUrl.split(',')[1]; // 데이터 URL에서 base64 인코딩된 이미지 데이터 부분 추출
  const binaryData = atob(base64Data); // base64 디코딩

  const length = binaryData.length;
  const buffer = new ArrayBuffer(length);
  const view = new Uint8Array(buffer);
  for (let i = 0; i < length; i++) {
    view[i] = binaryData.charCodeAt(i); // 디코딩된 데이터를 ArrayBuffer에 복사
  }

  return buffer;
};
exports.getCanvasImagePngBuffer = getCanvasImagePngBuffer;
const findCanvasInChildren = element => {
  const children = element.children; // 자식 요소들을 가져옴
  for (let i = 0; i < children.length; i++) {
    const child = children[i];
    if (child.tagName === 'CANVAS') {
      return child; // canvas 요소를 찾으면 반환
    } else {
      const canvas = findCanvasInChildren(child); // 재귀적으로 자식 요소에서 canvas를 찾음
      if (canvas) {
        return canvas; // 재귀 호출 결과를 반환
      }
    }
  }

  return null; // canvas를 찾지 못한 경우 null 반환
};
exports.findCanvasInChildren = findCanvasInChildren;
const getFileAsArrayBuffer = importedfile => {
  return new Promise(function (resolve) {
    var oReq = new XMLHttpRequest();
    oReq.open('get', importedfile, true);
    oReq.responseType = 'arraybuffer';
    oReq.onload = function () {
      var arraybuffer = oReq.response;
      // console.log("blob",blob); 
      resolve(arraybuffer);
    };
    oReq.send();
  });
};
exports.getFileAsArrayBuffer = getFileAsArrayBuffer;
const getMedian = arr => {
  const mid = Math.floor(arr.length / 2),
    nums = [...arr].sort((a, b) => a - b);
  return arr.length % 2 !== 0 ? nums[mid] : (nums[mid - 1] + nums[mid]) / 2;
};
exports.getMedian = getMedian;
const hexToRgb = hex => {
  // Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
  var shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
  hex = hex.replace(shorthandRegex, function (m, r, g, b) {
    return r + r + g + g + b + b;
  });
  var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
  return result ? {
    r: parseInt(result[1], 16),
    g: parseInt(result[2], 16),
    b: parseInt(result[3], 16)
  } : null;
};
exports.hexToRgb = hexToRgb;
const openFullScreen = () => {
  // 호출할때 javscript로 한것 f11말고
  var elem = document.documentElement;
  if (elem.requestFullscreen) {
    elem.requestFullscreen();
  } else if (elem.webkitRequestFullscreen) {
    // Chrome, Safari & Opera
    elem.webkitRequestFullscreen();
  } else if (elem.mozRequestFullScreen) {
    // Firefox
    elem.mozRequestFullScreen();
  } else if (elem.msRequestFullscreen) {
    // IE/Edge
    elem.msRequestFullscreen();
  }
};
exports.openFullScreen = openFullScreen;
const closeFullscreen = () => {
  const errormsg = "F11키를 눌러서 전체화면을 해제해 주세요.";
  if (document.exitFullscreen) {
    if (document.fullscreenElement) {
      document.exitFullscreen();
    } else {
      alert(errormsg);
    }
  } else if (document.mozCancelFullScreen) {
    if (document.mozFullScreenElement) {
      document.mozCancelFullScreen();
    } else {
      alert(errormsg);
    }
  } else if (document.webkitExitFullscreen) {
    if (document.webkitFullscreenElement) {
      document.webkitExitFullscreen();
    } else {
      alert(errormsg);
    }
  } else if (document.msExitFullscreen) {
    if (document.msFullscreenElement) {
      document.msExitFullscreen();
    } else {
      alert(errormsg);
    }
  }
};
exports.closeFullscreen = closeFullscreen;