318 lines
No EOL
11 KiB
HTML
318 lines
No EOL
11 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=utf-8">
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<title>RBG Slider Control</title>
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<style type="text/css">
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/*margin and padding on body element
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can introduce errors in determining
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element position and are not recommended;
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we turn them off as a foundation for YUI
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CSS treatments. */
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body {
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margin:0;
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padding:0;
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}
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</style>
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<link rel="stylesheet" type="text/css" href="../../build/fonts/fonts-min.css" />
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<script type="text/javascript" src="../../build/yahoo-dom-event/yahoo-dom-event.js"></script>
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<script type="text/javascript" src="../../build/animation/animation-min.js"></script>
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<script type="text/javascript" src="../../build/dragdrop/dragdrop-min.js"></script>
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<script type="text/javascript" src="../../build/slider/slider-min.js"></script>
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<!--begin custom header content for this example-->
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<style type="text/css">
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.dragPanel { position: relative; background-color: #eee; border: 1px solid #336; top: 0px; left: 20px; width: 320px; height: 180px; }
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.dragPanel h4 { background-color: #336; height: 10px; margin: 0px; cursor: move; }
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input { font-size: 0.85em} .thumb { cursor:default; width:18px; height:18px; z-index: 9; position: absolute; left: 0px; }
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.bg { position:absolute; left:10px; height:18px; width:146px; border: 0px solid #aaaaaa; }
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.bg span, .bg p { cursor:default; position: relative; font-size: 2px; overflow: hidden; color: #aaaaaa; top: 4px; height: 10px; width: 4px; display: block; float:left; }
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.bg span { border-top:1px solid #cccccc; border-bottom:1px solid #cccccc; }
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.bg .lb { border-left:1px solid #cccccc; }
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.bg .rb { border-right:1px solid #cccccc; }
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#valdiv { position:absolute; top: 100px; left:10px; }
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#rBG {-moz-outline: none; outline:0px none;top:30px}
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#gBG {-moz-outline: none; outline:0px none;top:50px}
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#bBG {-moz-outline: none; outline:0px none;top:70px}
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#swatch { position:absolute; left:160px; top:34px; height:50px; width:50px; border:1px solid #aaaaaa; }
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</style>
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<!--end custom header content for this example-->
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</head>
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<body class=" yui-skin-sam">
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<h1>RBG Slider Control</h1>
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<div class="exampleIntro">
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<p>The RGB slider implements the <a href="http://developer.yahoo.com/yui/slider/">YUI Slider Control</a> to create three sliders which, between them, generate an
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RGB color. The background color of each slider is also dynamically modified to reflect the colors that could be
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generated by moving a single slider; this affords greater visual feedback to the user and allows her to have a quicker intuitive sense about how to get the desired result.</p>
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<p>(<strong>Note:</strong> YUI also includes a full <a href="http://developer.yahoo.com/yui/colorpicker/">Color Picker Control</a> with a complete set of configurable options.)</p>
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</div>
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<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== -->
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<div id="ddRGB" class="dragPanel">
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<h4 id="pickerHandle"> </h4>
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<div id="rBG" class="bg" tabindex="1" hidefocus="true">
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<div id="rthumb" class="thumb"><img src="assets/thumb-rgb.png" /></div>
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</div>
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<div id="gBG" class="bg" tabindex="2" hidefocus="true">
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<div id="gthumb" class="thumb"><img src="assets/thumb-rgb.png" /></div>
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</div>
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<div id="bBG" class="bg" tabindex="3" hidefocus="true">
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<div id="bthumb" class="thumb"><img src="assets/thumb-rgb.png" /></div>
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</div>
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<div id="valdiv">
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<form name="rgbform">
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<table border="0">
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<tr>
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<td>
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RGB
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</td>
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<td>
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<input autocomplete="off" tabindex="3" name="rval" id="rval" type="text" value="0" size="4" maxlength="4" />
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<input autocomplete="off" tabindex="4" name="gval" id="gval" type="text" value="0" size="4" maxlength="4" />
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<input autocomplete="off" tabindex="5" name="bval" id="bval" type="text" value="0" size="4" maxlength="4" />
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</td>
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<td>
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<input tabindex="6" id="rgbSubmit" type="button" value="Update" />
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</td>
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</tr>
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<tr>
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<td>
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Hex: #
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</td>
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<td>
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<input autocomplete="off" tabindex="7" name="hexval" id="hexval" type="text" value="" size="6" maxlength="6" />
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</td>
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<td>
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<input tabindex="8" id="hexSubmit" type="button" value="Update" />
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</td>
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</tr>
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<tr>
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<td>
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<input tabindex="9" id="resetButton" type="button" value="Reset" />
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</td>
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</tr>
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</table>
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</form>
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</div>
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<div id="swatch"> </div>
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</div>
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<!-- color.js extracted from the colorpicker widget -->
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<script type="text/javascript" src="assets/color.js"></script>
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<script type="text/javascript">
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YAHOO.example.RGBSlider = function() {
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var Event = YAHOO.util.Event,
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Dom = YAHOO.util.Dom,
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Color = YAHOO.util.Color,
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Slider = YAHOO.widget.Slider,
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r, g, b, dd;
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function updateSliderColors() {
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var curr, curg, curb;
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curr = Math.min(r.getValue() * 2, 255);
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curg = Math.min(g.getValue() * 2, 255);
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curb = Math.min(b.getValue() * 2, 255);
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YAHOO.log("updateSliderColor " + curr + ", " + curg + ", " + curb);
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for (var i=0; i<34; i++) {
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Dom.setStyle("rBG" + i, "background-color",
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"rgb(" + (i*8) + "," + curg + "," + curb + ")");
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Dom.setStyle("gBG" + i, "background-color",
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"rgb(" + curr + "," + (i*8) + "," + curb + ")");
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Dom.setStyle("bBG" + i, "background-color",
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"rgb(" + curr + "," + curg + "," + (i*8) + ")");
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}
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Dom.setStyle("swatch", "background-color",
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"rgb(" + curr + "," + curg + "," + curb + ")");
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Dom.get("hexval").value = Color.rgb2hex(curr, curg, curb);
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}
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function isValidRGB(a) {
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if ((!a[0] && a[0] !=0) || isNaN(a[0]) || a[0] < 0 || a[0] > 255) return false;
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if ((!a[1] && a[1] !=0) || isNaN(a[1]) || a[1] < 0 || a[1] > 255) return false;
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if ((!a[2] && a[2] !=0) || isNaN(a[2]) || a[2] < 0 || a[2] > 255) return false;
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return true;
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}
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function listenerUpdate(whichSlider, newVal) {
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newVal = Math.min(255, newVal);
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Dom.get(whichSlider + "val").value = newVal;
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updateSliderColors();
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}
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return {
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userReset: function() {
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var v;
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var f = document.forms['rgbform'];
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r.setValue(0);
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g.setValue(0);
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b.setValue(0);
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},
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rgbInit: function() {
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r = Slider.getHorizSlider("rBG", "rthumb", 0, 128);
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r.subscribe("change", function(newVal) { listenerUpdate("r", newVal*2); });
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g = Slider.getHorizSlider("gBG", "gthumb", 0, 128);
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g.subscribe("change", function(newVal) { listenerUpdate("g", newVal*2); });
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b = Slider.getHorizSlider("bBG", "bthumb", 0, 128);
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b.subscribe("change", function(newVal) { listenerUpdate("b", newVal*2); });
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this.initColor();
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dd = new YAHOO.util.DD("ddRGB");
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dd.setHandleElId("pickerHandle");
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},
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initColor: function() {
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var ch = " ";
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d = document.createElement("P");
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d.className = "rb";
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r.getEl().appendChild(d);
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d = document.createElement("P");
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d.className = "rb";
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g.getEl().appendChild(d);
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d = document.createElement("P");
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d.className = "rb";
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b.getEl().appendChild(d);
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for (var i=0; i<34; i++) {
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d = document.createElement("SPAN");
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d.id = "rBG" + i
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// d.innerHTML = ch;
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r.getEl().appendChild(d);
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d = document.createElement("SPAN");
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d.id = "gBG" + i
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// d.innerHTML = ch;
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g.getEl().appendChild(d);
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d = document.createElement("SPAN");
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d.id = "bBG" + i
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// d.innerHTML = ch;
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b.getEl().appendChild(d);
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}
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d = document.createElement("P");
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d.className = "lb";
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r.getEl().appendChild(d);
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d = document.createElement("P");
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d.className = "lb";
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g.getEl().appendChild(d);
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d = document.createElement("P");
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d.className = "lb";
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b.getEl().appendChild(d);
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this.userUpdate();
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},
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hexUpdate: function(e) {
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return this.userUpdate(e, true);
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},
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userUpdate: function(e, isHex) {
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var v;
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var f = document.forms['rgbform'];
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if (isHex) {
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var hexval = f["hexval"].value;
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// shorthand #369
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if (hexval.length == 3) {
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var newval = "";
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for (var i=0;i<3;i++) {
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var a = hexval.substr(i, 1);
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newval += a + a;
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}
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hexval = newval;
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}
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YAHOO.log("hexval:" + hexval);
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if (hexval.length != 6) {
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alert("illegal hex code: " + hexval);
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} else {
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var rgb = Color.hex2rgb(hexval);
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// alert(rgb.toString());
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if (isValidRGB(rgb)) {
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f['rval'].value = rgb[0];
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f['gval'].value = rgb[1];
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f['bval'].value = rgb[2];
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}
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}
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}
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// red
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v = parseFloat(f['rval'].value);
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v = ( isNaN(v) ) ? 0 : Math.round(v);
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YAHOO.log("setValue, r: " + v);
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r.setValue(Math.round(v) / 2);
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v = parseFloat(f['gval'].value);
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v = ( isNaN(v) ) ? 0 : Math.round(v);
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YAHOO.log("setValue, g: " + g);
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g.setValue(Math.round(v) / 2);
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v = parseFloat(f['bval'].value);
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v = ( isNaN(v) ) ? 0 : Math.round(v);
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YAHOO.log("setValue, b: " + b);
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b.setValue(Math.round(v) / 2);
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updateSliderColors();
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if (e) {
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Event.stopEvent(e);
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}
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},
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init: function() {
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this.rgbInit();
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Event.on("rgbForm", "submit", this.userUpdate);
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Event.on("rgbSubmit", "click", this.userUpdate);
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Event.on("hexSubmit", "click", this.hexUpdate, this, true);
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Event.on("resetButton", "click", this.userReset);
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}
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};
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}();
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YAHOO.util.Event.onDOMReady(YAHOO.example.RGBSlider.init,
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YAHOO.example.RGBSlider, true);
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</script>
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<!--END SOURCE CODE FOR EXAMPLE =============================== -->
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</body>
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</html> |