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Thread: image filters

  1. #1
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    Nov 2004
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    Default image filters

    hi, i am trying to make a web pagee that will allow the user to toggle between the various types of image filters. i can get this to work for one filter but not multiple ones. the code i have is
    <html>
    <head>
    <title>Image Filters</title>

    <style type="text/css">

    <!--
    @import "style.css";
    img.alpha {filter:alpha(opacity=100, finishopacity=0, style=2)}
    img.blur {filter:blur(add=0, direction=225, strength=10)}
    img.flipH {filter:flipH}
    img.flipV {filter:flipV}
    img.chroma {filter:chroma(color=red)}
    img.grey {filter:grey}
    img.invert {filter:invert}
    img.xRay {filter:xRay}
    img.wave {filter:wave(add=0, freq=5, lightstrength=20, phase=220, strength=10)}

    img.glow {filter:glow(color=blue, strength=5)}
    img.shadow {filter:chroma(color=black) shadow(color=red, direction=225)}
    img.dropShadow {filter:dropShadow(color=blue, offx=4, offy=4, positive=1)}
    img.mask {filter:chroma(color=blue) mask(color=blue)}

    div.header {background-color:red; position:absolute; top:0; left:0; height:10%; width:100%}

    div.menu {background-color:black; position:absolute; top:10%; left:0; height:10%; width:100%}

    div.main {background-color:red; position:absolute; top:20%; left:0; height:80%; width:100%}
    h1 {text-align:center}

    body {margin:0}
    a:hover {color:#000000;}
    a {text-decoration:none; font-size:15pt}
    a:link {color:FFFFFF;}
    a:active {color:FFFFFF}
    a:visited {color:FFFFFF}
    -->
    </style>

    <script src="code.js"></script>

    <script type="text/JavaScript">
    <!--
    function invert(obj)
    {
    obj.filters.invert.enabled = !obj.filters.invert.enabled
    }
    -->
    </script>

    </head>

    <body onLoad="loadHeader(); loadMenu()">

    <div class="header"><h1 id="header"></h1></div>
    <div class="menu"><h1 id="menu"></h1></div>

    <div class="main">

    <input type="file" onchange="myImage.src=this.value"></input>
    </br></br>

    <img src="" class="invert" id="myImage">
    </br></br>

    <button onclick="invert(myImage)">toggle</button></br>

    </div>

    </body>
    </html>

    the red bit is where im having the problem. this code allows the user to upload an image and i intend to have individual buttons for each filter. does anyone have more of a clue than me?

  2. #2
    Join Date
    Dec 2004
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    Default filters

    hey bplemon, i seen your thread but haven't had time to reply until now.

    the answer to your puzzle lies in chaining the filters in an external css file as follows:
    img.filt {filter: alpha(opacity=100, finishopacity=0, style=2, enabled=false) blur(add=0, direction=225, strength=10, enabled=false) flipV(enabled=false) flipH(enabled=false) chroma(color=black, enabled=false) gray(enabled=false) invert(enabled=false) wave(add=0, freq=5, lightstrength=20, phase=220, strength=10, enabled=false) xRay(enabled=false) glow(color=blue, strength=15, enabled=false) shadow(color=red, direction=225, enabled=false) dropShadow(color=blue, offx=4, offy=4, positive=1, enabled=false) mask(color=blue, enabled=false)}

    this basically puts them into an array with your first filter alpha at position [0] and the last one mask at [13]. You then need to create 13 buttons with the following code for the 1st one 'alpha'

    <button onclick="myImage.filters[0].enabled = !myImage.filters[0].enabled,
    myPar.filters[0].enabled = !myPar.filters[0].enabled">Alpha</button>
    (do this for the next 12 changing[0] for the next element i.e. [1], [2] etc.

    then at the click of a button you can toggle your filters

    any other queries contact me
    sexy nic

  3. #3
    Join Date
    Dec 2004
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    Default correction

    change myPar to myImage

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