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iSpring Player SDK tutorial

1. Presentation embedding with iframe

Before you start, please read the Player SDK Introduction article

  • Create an empty index.html and a directory named presentation
  • Convert your presentation
  • Copy the converted files to the presentation directory
  • Add the following HTML code to index.html:
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1"/>
    <title>Insert a web page title here</title>
    <style>
        #presentation {
            width: 864px;
            height: 540px;
            border: 1px solid #000;
        }
    </style>
  </head>
  <body>
    <div>
      <iframe id="presentation" src="presentation/index.html"></iframe>
    </div>
    <script>
        var ispringPresentationConnector = {};

        ispringPresentationConnector.register = function(player)
        {
            // This function will be invoked by the presentation when the player is initialized
        };
    </script>
  </body>
</html>

When you open the index.html, you will see the published presentation embedded in your web page as an iframe.

2. Adding previous and next slide navigation buttons

Now we are ready to add buttons that will make the player Now we can add two buttons to control navigation.

CSS

Append the following styles in the end of the <style> tag:

#button-prev, #button-next {
    float: left;
    display: inline-block;
    width: 80px;
    height: 35px;
}

HTML

Add the following HTML code just below the <iframe> tag:

<div class="clear"> </div>
<div>
  <button id="button-prev">Prev</button>
  <button id="button-next">Next</button>
</div>

JavaScript

Replace the <script> tag content with the following JavaScript code:

var ispringPresentationConnector = {};

ispringPresentationConnector.register = function(player) {
    var playbackController = player.view().playbackController();
    initPlaybackControls(playbackController);
};

function initPlaybackControls(playbackController) {
    var prevBtn = document.getElementById("button-prev");
    prevBtn.onclick = function() {
        playbackController.gotoPreviousSlide();
    };

    var nextBtn = document.getElementById("button-next");
    nextBtn.onclick = function() {
        playbackController.gotoNextSlide();
    };
}

3. Adding Current Slide Indicator

Let's add indicator with the current slide number between the Next and the Previous buttons:

HTML

Insert a new DIV between <button> elements:

<body>
  <div class="buttons">
    <button id="button-prev">Prev</button>
+    <div id="slide-counter">
+        <p id="current-slide"></p>
+    </div>
    <button id="button-next">Next</button>
  </div>
</body>

CSS

#slide-counter {
    float: left;
    text-align: center;
    min-width: 80px;
    border: 1px solid #000;
    vertical-align: bottom;
    display: inline-block;
    height: 33px;
}
#current-slide {
    margin-top: 7px;
    border: none;
    width: 100%;
}

JavaScript

Add the slideChangeEvent handler to the presentation playback controller.

var ispringPresentationConnector = {};

ispringPresentationConnector.register = function(player) {
+    var presentation = player.presentation();
    var playbackController = player.view().playbackController();
+    var slidesCount = presentation.slides().count();
+    initPlaybackControls(playbackController, slidesCount);
};

-function initPlaybackControls(playbackController) {
+function initPlaybackControls(playbackController, slidesCount) {
    var prevBtn = document.getElementById("button-prev");
    prevBtn.onclick = function() {
        playbackController.gotoPreviousSlide();
    };

    var nextBtn = document.getElementById("button-next");
    nextBtn.onclick = function() {
        playbackController.gotoNextSlide();
    };

+    var slideNoLabel = document.getElementById("current-slide");
+    playbackController.slideChangeEvent().addHandler(function(slideIndex)
+    {
+        slideNoLabel.innerHTML = (slideIndex + 1).toString() + "/" + slidesCount;
+    });
}

4. Selecting Slide by Number

Right now we have indicator which shows current slide number. It will be useful to add abilty for changing slide by entering it's number.

Changes in HTML

-        <p id="current-slide"></p>
+        <input id="current-slide" type="text" size="3">
+        <span>/</span>
+        <span id="slide-count">0</span>

Changes in CSS

#current-slide {
-    border: none;
-    width: 100%;
+    border: 1px solid #8AD;
+    width: 35%;
}

Remove the following Javascript:

-    var slideNoLabel = document.getElementById("current-slide");
-    playbackController.slideChangeEvent().addHandler(function(slideIndex)
-    {
-        slideNoLabel.innerHTML = (slideIndex + 1).toString() + "/" + slidesCount;
-    });

Replace it with:

    var slideCountLabel = document.getElementById("slide-count");
    slideCountLabel.innerHTML = slidesCount.toString();
    var slideNoInput = document.getElementById("current-slide");
    playbackController.slideChangeEvent().addHandler(function(slideIndex)
    {
        slideNoInput.value = (slideIndex + 1).toString();
    });
    slideNoInput.onchange = function()
    {
        var currentSlideIndex = playbackController.currentSlideIndex();
        var nextSlideIndex = parseInt(slideNoInput.value) - 1;
        if (nextSlideIndex >= 0 && nextSlideIndex < slidesCount)
        {
            playbackController.gotoSlide(nextSlideIndex);
        }
        else
        {
            slideNoInput.value = (currentSlideIndex + 1).toString();
        }
    };