PFOLD: Paper-like Unfolding Effect

PFOLD: Paper-like Unfolding Effect

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A highly experimental jQuery plugin that let’s you unfold elements to reveal more content just like on a piece of paper. Unfolding directions and number of steps can be specified.

PFold is a very experimental jQuery plugin that makes it possible to open elements in a paper-like unfolding effect. An element can be unfolded in 3D in order to reveal some other content. The idea is to have several levels of folding, where each step of opening will double the element size, hence imitating a folded paper being opened.

A couple of options are available, such as the unfolding direction for each step and the number of folding steps.

For browsers that don’t support CSS 3D transforms or transitions, there will be a simple fallback, i.e. the larger content appears.

For using the plugin, the following structure is expected:

<div id="uc-container" class="uc-container">
    <div class="uc-initial-content">
        <!-- initial content -->
    </div>
    <div class="uc-final-content">
        <!-- final content -->
    </div>
</div>

The final content’s size will depend on the initial content’s size (set in the CSS), the folding directions and the number of folding steps. For example, having an initial element of 200px width and height, a folding direction of bottom and left and two folding steps will create a final area of 400px in width and height.

The plugin can be called like this:

$( '#uc-container' ).pfold();

Options

The following options are available:


// the options
$.PFold.defaults = {
    // perspective value
    perspective : 1200,
 
    // each folding step's speed
    speed : 450,
 
    // each folding step's easing 
    easing : 'linear',
 
    // delay between each (un)folding step (ms)
    folddelay : 0,
 
    // number of times the element will fold
    folds : 2,
 
    // the direction of each unfolding step
    folddirection : ['right','top'],
 
    // use overlays to simulate a shadow for each folding step 
    overlays : true,
 
    // the main container moves (translation) in order to keep its initial position 
    centered : false,
 
    // allows us to specify a different speed for the container's translation
    // values range : [0 - 1] 
    // if 0 the container jumps immediately to the final position (translation).
    // this is only valid if centered is true
    containerSpeedFactor : 1,
 
    // easing for the container transition
    // this is only valid if centered is true
    containerEasing : 'linear',
 
    // callbacks
    onEndFolding : function() { return false; },
    onEndUnfolding : function() { return false; }
};

Check out the three demos with different configurations:

Reference URL