Edit D:\AVAWeike\AVAWeike\AVA.ResourcesPlatform.AdminUI\Tools\Jcrop\demos\tutorial5.html

<!DOCTYPE html>
<html lang="en">
<head>
  <title>API Demo | Jcrop Demo</title>
  <meta http-equiv="Content-type" content="text/html;charset=UTF-8" />

// The variable jcrop_api will hold a reference to the
    // Jcrop API once Jcrop is instantiated.
    var jcrop_api;

// In this example, since Jcrop may be attached or detached
    // at the whim of the user, I've wrapped the call into a function
    initJcrop();
    
    // The function is pretty simple
    function initJcrop()//{{{
    {
      // Hide any interface elements that require Jcrop
      // (This is for the local user interface portion.)
      $('.requiresjcrop').hide();

// Invoke Jcrop in typical fashion
      $('#target').Jcrop({
        onRelease: releaseCheck
      },function(){

jcrop_api = this;
        jcrop_api.animateTo([100,100,400,300]);

// Setup and dipslay the interface for "enabled"
        $('#can_click,#can_move,#can_size').attr('checked','checked');
        $('#ar_lock,#size_lock,#bg_swap').attr('checked',false);
        $('.requiresjcrop').show();

});

};
    //}}}

// Use the API to find cropping dimensions
    // Then generate a random selection
    // This function is used by setSelect and animateTo buttons
    // Mainly for demonstration purposes
    function getRandom() {
      var dim = jcrop_api.getBounds();
      return [
        Math.round(Math.random() * dim[0]),
        Math.round(Math.random() * dim[1]),
        Math.round(Math.random() * dim[0]),
        Math.round(Math.random() * dim[1])
      ];
    };

// This function is bound to the onRelease handler...
    // In certain circumstances (such as if you set minSize
    // and aspectRatio together), you can inadvertently lose
    // the selection. This callback re-enables creating selections
    // in such a case. Although the need to do this is based on a
    // buggy behavior, it's recommended that you in some way trap
    // the onRelease callback if you use allowSelect: false
    function releaseCheck()
    {
      jcrop_api.setOptions({ allowSelect: true });
      $('#can_click').attr('checked',false);
    };

// Attach interface buttons
    // This may appear to be a lot of code but it's simple stuff
    $('#setSelect').click(function(e) {
      // Sets a random selection
      jcrop_api.setSelect(getRandom());
    });
    $('#animateTo').click(function(e) {
      // Animates to a random selection
      jcrop_api.animateTo(getRandom());
    });
    $('#release').click(function(e) {
      // Release method clears the selection
      jcrop_api.release();
    });
    $('#disable').click(function(e) {
      // Disable Jcrop instance
      jcrop_api.disable();
      // Update the interface to reflect disabled state
      $('#enable').show();
      $('.requiresjcrop').hide();
    });
    $('#enable').click(function(e) {
      // Re-enable Jcrop instance
      jcrop_api.enable();
      // Update the interface to reflect enabled state
      $('#enable').hide();
      $('.requiresjcrop').show();
    });
    $('#rehook').click(function(e) {
      // This button is visible when Jcrop has been destroyed
      // It performs the re-attachment and updates the UI
      $('#rehook,#enable').hide();
      initJcrop();
      $('#unhook,.requiresjcrop').show();
      return false;
    });
    $('#unhook').click(function(e) {
      // Destroy Jcrop widget, restore original state
      jcrop_api.destroy();
      // Update the interface to reflect un-attached state
      $('#unhook,#enable,.requiresjcrop').hide();
      $('#rehook').show();
      return false;
    });

// Hook up the three image-swapping buttons
    $('#img1').click(function(e) {
      $(this).addClass('active').closest('.btn-group')
        .find('button.active').not(this).removeClass('active');

jcrop_api.setImage('demo_files/sago.jpg');
      jcrop_api.setOptions({ bgOpacity: .6 });
      return false;
    });
    $('#img2').click(function(e) {
      $(this).addClass('active').closest('.btn-group')
        .find('button.active').not(this).removeClass('active');

jcrop_api.setImage('demo_files/pool.jpg');
      jcrop_api.setOptions({ bgOpacity: .6 });
      return false;
    });
    $('#img3').click(function(e) {
      $(this).addClass('active').closest('.btn-group')
        .find('button.active').not(this).removeClass('active');

jcrop_api.setImage('demo_files/sago.jpg',function(){
        this.setOptions({
          bgOpacity: 1,
          outerImage: 'demo_files/sagomod.jpg'
        });
        this.animateTo(getRandom());
      });
      return false;
    });

// The checkboxes simply set options based on it's checked value
    // Options are changed by passing a new options object

// Also, to prevent strange behavior, they are initially checked
    // This matches the default initial state of Jcrop

$('#can_click').change(function(e) {
      jcrop_api.setOptions({ allowSelect: !!this.checked });
      jcrop_api.focus();
    });
    $('#can_move').change(function(e) {
      jcrop_api.setOptions({ allowMove: !!this.checked });
      jcrop_api.focus();
    });
    $('#can_size').change(function(e) {
      jcrop_api.setOptions({ allowResize: !!this.checked });
      jcrop_api.focus();
    });
    $('#ar_lock').change(function(e) {
      jcrop_api.setOptions(this.checked?
        { aspectRatio: 4/3 }: { aspectRatio: 0 });
      jcrop_api.focus();
    });
    $('#size_lock').change(function(e) {
      jcrop_api.setOptions(this.checked? {
        minSize: [ 80, 80 ],
        maxSize: [ 350, 350 ]
      }: {
        minSize: [ 0, 0 ],
        maxSize: [ 0, 0 ]
      });
      jcrop_api.focus();
    });

});

</script>
<link rel="stylesheet" href="demo_files/main.css" type="text/css" />
<link rel="stylesheet" href="demo_files/demos.css" type="text/css" />
<link rel="stylesheet" href="../css/jquery.Jcrop.css" type="text/css" />
<style type="text/css">
  .optdual { position: relative; }
  .optdual .offset { position: absolute; left: 18em; }
  .optlist label { width: 16em; display: block; }
  #dl_links { margin-top: .5em; }

</style>

</head>
<body>

<div class="page-header">
<ul class="breadcrumb first">
  <li><a href="../index.html">Jcrop</a> <span class="divider">/</span></li>
  <li><a href="../index.html">Demos</a> <span class="divider">/</span></li>
  <li class="active">API Demo</li>
</ul>
<h1>API Demo</h1>
</div>

<div style="margin: .8em 0 .5em;">
    <span class="requiresjcrop">
      <button id="setSelect" class="btn btn-mini">setSelect</button>
      <button id="animateTo" class="btn btn-mini">animateTo</button>
      <button id="release" class="btn btn-mini">Release</button>
      <button id="disable" class="btn btn-mini">Disable</button>
    </span>
    <button id="enable" class="btn btn-mini" style="display:none;">Re-Enable</button>
    <button id="unhook" class="btn btn-mini">Destroy!</button>
    <button id="rehook" class="btn btn-mini" style="display:none;">Attach Jcrop</button>
  </div>

<fieldset class="optdual requiresjcrop">
    <legend>Option Toggles</legend>
    <div class="optlist offset">
      <label><input type="checkbox" id="ar_lock" />Aspect ratio</label>
      <label><input type="checkbox" id="size_lock" />minSize/maxSize setting</label>
    </div>
    <div class="optlist">
      <label><input type="checkbox" id="can_click" />Allow new selections</label>
      <label><input type="checkbox" id="can_move" />Selection can be moved</label>
      <label><input type="checkbox" id="can_size" />Resizable selection</label>
    </div>
  </fieldset>

<fieldset class="requiresjcrop" style="margin: .5em 0;">
    <legend>Change Image</legend>
    <div class="btn-group">
      <button class="btn" id="img2">Pool</button>
      <button class="btn active" id="img1">Sago</button>
      <button class="btn" id="img3">Sago w/ outerImage</button>
    </div>
  </fieldset>

<div class="tapmodo-footer">
  <a href="http://tapmodo.com" class="tapmodo-logo segment">tapmodo.com</a>
  <div class="segment"><b>&copy; 2008-2014 Tapmodo Interactive LLC</b><br />
    Jcrop is free software released under <a href="../MIT-LICENSE.txt">MIT License</a>
  </div>
</div>

</div>
</div>
</div>
</div>

</body>
</html>

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