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<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" >
<head>
<title>Inspect DojoX GFX JSON</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
        @import "../../../dojo/resources/dojo.css";
        @import "../../../dijit/tests/css/dijitTests.css";
        td.cell { padding: 1em 1em 0em 0em; }
        td.note { font-size: 80%; }
</style>
<!--
The next line should include Microsoft's Silverligth.js, if you plan to use the silverlight backend
<script type="text/javascript" src="Silverlight.js"></script>
-->
<script type="text/javascript" src="../../../dojo/dojo.js"></script>
<script type="text/javascript">
dojo.require("dojox.gfx");
dojo.require("dojox.gfx.move");
dojo.require("dojox.gfx.utils");

surface = null;
container_pos = null;
mover = null;

init = function(){
        // initialize graphics
        var container = dojo.byId("gfx");
        surface = dojox.gfx.createSurface(container, 500, 500);
        container_pos = dojo.coords(container, true);
        // wire UI
        dojo.connect(dojo.byId("load"), "onclick", onLoad);
        dojo.connect(dojo.byId("add"),  "onclick", onAdd);
        // handle moves
        dojo.subscribe("/gfx/move/start", function(m){ mover = m; });
        dojo.subscribe("/gfx/move/stop", function(){ mover = null; });
        // handle shape operations
        dojo.connect(document, "onkeydown", onKeyDown);
        // cancel text selection and text dragging
        dojo.connect(container, "ondragstart",   dojo, "stopEvent");
        dojo.connect(container, "onselectstart", dojo, "stopEvent");
};

onLoad = function(){
        var s = dojo.byId("source");
        if(!s.value){
                alert("Name of the file is required.");
                return;
        }
        dojo.xhrGet({
                url:                    s.value,
                preventCache:   true,
                handleAs:               "json",
                load:                   loadObjects,
                error:                  function(r){ alert("Error: " + r); }
        });
};

mainObject = null;
names = [];

loadObjects = function(r){
        if(!r){
                alert("Wrong JSON object. Did you type the file name correctly?");
                return;
        }
        mainObject = r;
        // clear old object names
        names = [];
        var s = dojo.byId("names"), ni = dojo.byId("names_info");
        ni.innerHTML = "";
        while(s.childNodes.length){ s.removeChild(s.lastChild); }
        // find new names
        findNames(s, dojo.byId("named").checked, "", mainObject);
        ni.innerHTML = " (" + names.length + ")";
};

findNames = function(selector, named_only, prefix, o){
        if(o instanceof Array){
                for(var i = 0; i < o.length; ++i){
                        findNames(selector, named_only, prefix, o[i]);
                }
                return;
        }
        if(named_only && !("name" in o)) return;
        var name = ("name" in o) ? o.name : "*",
                full = prefix ? prefix + "/" + name : name,
                opt  = document.createElement("option");
        opt.value = names.length;
        opt.innerHTML = full;
        names.push(o);
        selector.appendChild(opt);
        if("children" in o){
                findNames(selector, named_only, full, o.children);
        }
};

onAdd = function(){
        var s = dojo.byId("names");
        for(var i = 0; i < s.options.length; ++i){
                var opt = s.options[i];
                if(!opt.selected) continue;
                var object = names[Number(opt.value)];
                var group = surface.createGroup();
                dojox.gfx.utils.deserialize(group, object);
                new dojox.gfx.Moveable(group); // make it moveable as whole
        }
};

// event handling

onKeyDown = function(e){
        if(!mover) return;
        switch(e.keyCode){
                case "f".charCodeAt(0): case "F".charCodeAt(0):
                        mover.shape.moveToFront();
                        break;
                case "b".charCodeAt(0): case "B".charCodeAt(0):
                        mover.shape.moveToBack();
                        break;
                case "q".charCodeAt(0): case "Q".charCodeAt(0):
                        mover.shape.applyLeftTransform(dojox.gfx.matrix.rotategAt(-15, mover.lastX - container_pos.x, mover.lastY - container_pos.y));
                        break;
                case "w".charCodeAt(0): case "W".charCodeAt(0):
                        mover.shape.applyLeftTransform(dojox.gfx.matrix.rotategAt(15, mover.lastX - container_pos.x, mover.lastY - container_pos.y));
                        break;
                case "d".charCodeAt(0): case "D".charCodeAt(0):
                        mover.shape.parent.remove(mover.shape);
                        mover.shape.rawNode = null;
                        mover.destroy();
                        break;
        }
        dojo.stopEvent(e);
};

dojo.addOnLoad(init);
</script>
</head>
<body>
        <h1>Inspect DojoX GFX JSON</h1>
        <p>Help: load a file, select an object, and add it, move it around, or apply operations to selected items:<br />
        F &mdash; bring to front, B &mdash; bring to back, Q &mdash; rotate CCW, W &mdash; rotate CW, D &mdash; delete.<br />
        (all operations work on currently dragged item).</p>
        <p><strong>VML note:</strong> VML doesn't process PNG images with opacity correctly.</p>
        <table><tr>
                <td align="left" valign="top" class="cell"><div id="gfx" style="width: 500px; height: 500px; border: solid 1px black;"></div></td>
                <td align="left" valign="top" class="cell"><table>
                        <tr><td>Source:</td></tr>
                        <tr><td><input type="text" id="source" value="data/Lars.json" size="30" />&nbsp;<button id="load">Load</button><br />
                        <input type="checkbox" id="named" checked="checked" />&nbsp;<label for="named">Load only named objects</label></td></tr>
                        <tr><td class="note"><em>Available sources:</em></td></tr>
                        <tr><td class="note"><em>data/Lars.json &mdash; vectors from SVG</em></td></tr>
                        <tr><td class="note"><em>data/Nils.json &mdash; vectors from SVG</em></td></tr>
                        <tr><td class="note"><em>data/LarsDreaming.json &mdash; vectors from SVG</em></td></tr>
                        <tr><td class="note"><em>data/buratino.json &mdash; images</em></td></tr>
                        <tr><td class="note"><em>data/transform.json &mdash; from dojox.gfx</em></td></tr>
                        <tr><td>&nbsp;</td></tr>
                        <tr><td>Objects<span id="names_info"></span>:</td></tr>
                        <tr><td><select id="names" multiple="multiple" size="10" style="width: 300px;"></select></td></tr>
                        <tr><td><button id="add">Add Selected</button></td></tr>
                        <tr><td class="note"><div  style="width: 300px;">Object names are hierarchical and separated by "/". Adding a selected object creates a group for this object. 
                        A higher-level object (a group) always includes lower-level objects as children.</div></td></tr>
                </table></td>
        </tr></table>
</body>
</html>