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Blinds Transition (filter)

Last updated: October 29th, 2008

The Binds Transition reveals content by opening and closing "blinds" Defined via IE's CSS filter property and applied through JavaScript, here is its basic syntax:

Syntax:

filter :progid:DXImageTransform.Microsoft.Blinds(attribute1=value1, attribute2=value2, etc);

Syntax (post IE8):

-ms-filter: "progid:DXImageTransform.Microsoft.Blinds(attribute1=value1, attribute2=value2, etc)";

Note: See "Difference in syntax between pre IE8 and IE8+ browsers" for more info on the changes to the filter syntax in IE8+.

Example:

<style type="text/css">

#somediv{
width: 90%;
-ms-filter: "progid:DXImageTransform.Microsoft.Blinds(duration=5)";
filter :progid:DXImageTransform.Microsoft.Blinds(duration=5);
}

</style>


<div id="somediv">Some DIV</div>

Syntax Via Scripting

//To define a new Blinds filter on an element
object.style.filter ="progid:DXImageTransform.Microsoft.Blinds(attribute=value1, attribute2=value2)"

To access an existing property within the Blinds filter:
object.filters.item("DXImageTransform.Microsoft.Blinds").Property1=value1;

//To access an existing property within the Blinds filter via the filters[] object
object.filters[x].Property1=value1 //where "x" is the position of the filter within list of filters on element

Below lists the attributes/properties of the Blinds Transition:

Blinds Transition attributes (properties)

Attributes/ Properties Description
bands Sets the number of strips (blinds) applied to the content. Default is 10 (strips).

Valid values: 1 - 100 (integer)

Direction Sets the direction of the transition. Default is "down".

Valid values (string): "up", "down", "left", or "right"

duration Sets the duration of time the transition takes to complete, in seconds. No default value.

Valid values: Floating point number greater than 0 (seconds implied, ie: 2.5 means 2.5 seconds)

Example:

<style type="text/css">

#mydiv{
-ms-filter: "progid:DXImageTransform.Microsoft.Blinds(duration=5)";
filter: progid:DXImageTransform.Microsoft.Blinds(duration=5);
width: 200px;
height: 200px;
background-color: yellow;
}

</style>


<div id="mydiv">Some DIV</div>

enabled Sets/ returns whether the filter is enabled or not. Default is true.

Valid values: true/ false

Percent

* This property accessible via scripting only

Sets the point in which to capture the display of the content to apply the transition on. Default is 0.

Valid values: 0 - 100 (percentage implied)

status Returns the current state of the transition.

Valid values:

Value description
0 Transition has stopped.
1 Transition has been successfully applied.
2 Transition is playing.

Example:

<script type="text/javascript">
var mydiv=document.getElementById("test")
alert(mydiv.filters.item("DXImageTransform.Microsoft.Blinds").status) //alerts status of transition
</script>

Blinds Transition methods

Methods Description
apply() Captures the initial display of the content in preparation for the transition to be played (using the play() method). No visible changes to the content made at this point.
play([duration]) Plays the transition in question. Supports an optional duration parameter that, if set, overrides the value of the duration property above in specifying the duration of the transition (in seconds).

Example:

<style type="text/css">

#mycontent{
-ms-filter: "progid:DXImageTransform.Microsoft.Blinds(duration=2, Direction=right, bands=4)";
filter: progid:DXImageTransform.Microsoft.Blinds(duration=2, Direction=right, bands=4);
width:150px;
height:150px;
background-color:navy;
color: white;
}

</style>


<div id="mycontent" />
<img src="test.gif" /><br />
This is some content
</div>

<script type="text/javascript">

var divbox=document.getElementById("mycontent")
divbox.filters[0].apply() //capture initial state of DIV (screenshot)
divbox.innerHTML="Hay, content has been changed!" //change DIV's content (though changes not visible yet due to above capture
divbox.filters[0].play() //play transition to reveal updated content

</script>

stop() Stops the transition playback.

Blinds Transition Demo


Beautiful castle for sale.

Play Transition

Source:

<style type="text/css">

#sample{
-ms-filter: "progid:DXImageTransform.Microsoft.Blinds(duration=3)";
filter: progid:DXImageTransform.Microsoft.Blinds(duration=3);
width: 230px;
height: 230px;
background-color: black;
padding: 10px;
color: white;
}

</style>


<div id="sample">
<img src="castle.jpg" /><br />
<b>Beautiful castle for sale.</b>
</div>

<p><a href="javascript:playtransition()">Play Transition</a></p>

<script type="text/javascript">

var sample=document.getElementById("sample")

function playtransition(){
sample.innerHTML='<img src="castle.jpg" /><br /><b>Beautiful castle for sale.</b>' //reset DIV to original content (in case demo is run more than once).
sample.filters[0].apply() //capture initial state of image (showing "castle.gif")
sample.innerHTML='<img src="castleinside.jpg" /><br /><b>Interior is elegant yet modern!</b>'
sample.filters[0].play() //play transition to reveal new image and description
}

</script>

Reference List

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