두개의 사진을 슬라이드로 이동하면서 비교해볼 수 있는 게시판입니다.

basic게시판을 커스텀했습니다.

원소스: https://www.w3schools.com/howto/howto_js_image_comparison.asp

여분필드를 3개 사용하였습니다.

압축을 풀면 image_compare라는 폴더가 나옵니다.

이것을 그누보드 순정기준 skin/board/image_compare가 되게 업로드해줍니다.

pc용입니다. 모바일용은 테스트과정에서 크기가 안맞는등 오류가 발생해서 차후에 보완하겠습니다.

wr_1: 슬리이드의 위치 버튼의 위치를 숫자로 입력합니다 wr_1: 1:오른쪽, 2:가운데, 2~500사이:왼쪽에서 가운데 사이 적당히 위치

wr_2: 첫째 이미지 예: http://example.com/images/suzy1.png

wr_3: 둘째 이미지 예: http://example.com/images/suzy2.png

감사합니다 ^^

* view.skin.php

[code]

<!-- Image Comparison -->
  
<style>
  *{box-sizing: border-box;}
  .img-comp-container{
    position: relative;
    height:540px;
  }
  .img-comp-img{
    position: absolute;
    width:auto;
    height:auto;
    overflow:hidden;
  }
  .img-comp-img img{
    display:block;
    vertical-align: middle;
  }
  .img-comp-slider{
    position: absolute;
    z-index: 9;
    cursor: ew-resize;
/*   set the appearance of the slider */
    width:40px; height: 40px; background-color:#2196f3; opacity: 0.7;border-radius: 50%;
  }

</style>
  
<script>
function initComparisons() {
  var x, i;
  /*find all elements with an "overlay" class:*/
  x = document.getElementsByClassName("img-comp-overlay");
  for (i = 0; i < x.length; i++) {
    /*once for each "overlay" element:
    pass the "overlay" element as a parameter when executing the compareImages function:*/
    compareImages(x[i]);
  }
  function compareImages(img) {
    var slider, img, clicked = 0, w, h;
    /*get the width and height of the img element*/
    w = img.offsetWidth;
    h = img.offsetHeight;
    
    /*set the width of the img element to 50%:*/
    img.style.width = (w / '<?php echo $view['wr_1']; // 슬라이드버튼위치  ?>') + "px";
    /*create slider:*/
    slider = document.createElement("DIV");
    slider.setAttribute("class", "img-comp-slider");
    /*insert slider*/
    img.parentElement.insertBefore(slider, img);
    
    /*position the slider in the middle:*/
    slider.style.top = (h / 2) - (slider.offsetHeight / 2) + "px";
    slider.style.left = (w / '<?php echo $view['wr_1']; // first large image ?>') - (slider.offsetWidth / 2) + "px";
    /*execute a function when the mouse button is pressed:*/
    slider.addEventListener("mousedown", slideReady);
    /*and another function when the mouse button is released:*/
    window.addEventListener("mouseup", slideFinish);
    /*or touched (for touch screens:*/
    slider.addEventListener("touchstart", slideReady);
    /*and released (for touch screens:*/
    window.addEventListener("touchend", slideFinish);
    function slideReady(e) {
      /*prevent any other actions that may occur when moving over the image:*/
      e.preventDefault();
      /*the slider is now clicked and ready to move:*/
      clicked = 1;
      /*execute a function when the slider is moved:*/
      window.addEventListener("mousemove", slideMove);
      window.addEventListener("touchmove", slideMove);
    }
    function slideFinish() {
      /*the slider is no longer clicked:*/
      clicked = 0;
    }
    function slideMove(e) {
      var pos;
      /*if the slider is no longer clicked, exit this function:*/
      if (clicked == 0) return false;
      /*get the cursor's x position:*/
      pos = getCursorPos(e)
      /*prevent the slider from being positioned outside the image:*/
      if (pos < 0) pos = 0;
      if (pos > w) pos = w;
      /*execute a function that will resize the overlay image according to the cursor:*/
      slide(pos);
    }
    function getCursorPos(e) {
      var a, x = 0;
      e = (e.changedTouches) ? e.changedTouches[0] : e;
      /*get the x positions of the image:*/
      a = img.getBoundingClientRect();
      /*calculate the cursor's x coordinate, relative to the image:*/
      x = e.pageX - a.left;
      /*consider any page scrolling:*/
      x = x - window.pageXOffset;
      return x;
    }
    function slide(x) {
      /*resize the image:*/
      img.style.width = x + "px";
      /*position the slider:*/
      slider.style.left = img.offsetWidth - (slider.offsetWidth / 2) + "px";
    }
  }
}
</script>
    
  </head>
  <body>

<div class="img-comp-container">      
      <div class="img-comp-img">
      <img src="<?php echo $view['wr_2']; // first image ?>" alt="" width="960" height="540">
      </div>
      <div class="img-comp-img img-comp-overlay">
        <img src="<?php echo $view['wr_3']; // second image ?>" width="960" height="540" alt="">
      </div>      
    </div>

<script>
/*Execute a function that will execute an image compare function for each element with the img-comp-overlay class:*/
initComparisons();
</script>
          
<!-- Image Comparison -->  

[/code]

* write.skin.php

[code]

<!-- Image Compare -->
      
<!--  Slide Button Positon -->
<!--  1: 버튼이 오른쪽에 위치, 2: 버튼이 가운데 위치, 2~500사이: 왼쪽에서 가운데 사이에 버튼이 위치.   -->
<input type=text class="frm_input full_input" name="wr_1" value="<?php echo $write['wr_1']; ?>" placeholder="버튼의 위치를 숫자로 입력합니다 wr_1: 1:오른쪽, 2:가운데, 2~500사이:왼쪽에서 가운데 사이 적당히 위치 ">

<!-- first image -->
<input type=text class="frm_input full_input" name="wr_2" value="<?php echo $write['wr_2']; ?>" placeholder="이미지경로 wr_2:예 http://example.com/images/suzy1.png ">  
      
<!-- second image -->
<input type=text class="frm_input full_input" name="wr_3" value="<?php echo $write['wr_3']; ?>" placeholder="이미지경로 wr_3:예 http://example.oom/images/suzy2.png ">      

<!-- Image Compare -->

[/code]