web/lib/metadataplayer/Segments.js
changeset 0 7f8907368bd5
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/metadataplayer/Segments.js	Fri Oct 18 17:54:44 2013 +0200
@@ -0,0 +1,175 @@
+// TODO: Trigger IriSP.SegmentsWidget.click
+
+IriSP.Widgets.Segments = function(player, config) {
+    IriSP.Widgets.Widget.call(this, player, config);
+};
+
+IriSP.Widgets.Segments.prototype = new IriSP.Widgets.Widget();
+
+IriSP.Widgets.Segments.prototype.defaults = {
+    annotation_type : "chap",
+    colors: ["#1f77b4","#aec7e8","#ff7f0e","#ffbb78","#2ca02c","#98df8a","#d62728","#ff9896","#9467bd","#c5b0d5","#8c564b","#c49c94","#e377c2","#f7b6d2","#7f7f7f","#c7c7c7","#bcbd22","#dbdb8d","#17becf","#9edae5"],
+    line_height: 8,
+    background: "#e0e0e0",
+    overlap: .25,
+    found_color: "#FF00FC",
+    faded_found_color: "#ff80fc"
+};
+
+IriSP.Widgets.Segments.prototype.template =
+    '<div class="Ldt-Segments-List"></div>'
+    + '<div class="Ldt-Segments-Position"></div>'
+    + '<div class="Ldt-Segments-Tooltip"></div>';
+
+IriSP.Widgets.Segments.prototype.annotationTemplate =
+    '<div class="Ldt-Segments-Segment Ldt-TraceMe" trace-info="segment-id:{{id}}, media-id:{{media_id}}, from:{{from}}, to:{{to}}" segment-text="{{text}}"'
+    + 'style="top:{{top}}px; height:{{height}}px; left:{{left}}px; width:{{width}}px; background:{{medcolor}}" data-base-color="{{color}}" data-low-color="{{lowcolor}}" data-medium-color="{{medcolor}}"></div>';
+
+
+IriSP.Widgets.Segments.prototype.draw = function() {
+    this.onMediaEvent("timeupdate", "onTimeupdate");
+    this.renderTemplate();
+    
+    var _list = this.getWidgetAnnotations().filter(function(_ann) {
+            return _ann.getDuration() > 0;
+        }),
+        _this = this,
+        _scale = this.width / this.source.getDuration(),
+        list_$ = this.$.find('.Ldt-Segments-List'),
+        lines = [],
+        zindex = 1,
+        searching = false;
+    
+    function saturate(r, g, b, s) {
+        function satcomp(c) {
+            return Math.floor(240 * (1 - s) + c * s);
+        }
+        var res = ( 0x10000 * satcomp(r) + 0x100 * satcomp(g) + satcomp(b)).toString(16);
+        while (res.length < 6) {
+            res = "0" + res;
+        }
+        return "#" + res;
+    }
+    
+    _list.forEach(function(_annotation, _k) {
+        var _left = _annotation.begin * _scale,
+            _width = ( _annotation.getDuration() ) * _scale,
+            _center = Math.floor( _left + _width / 2 ),
+            _fulltext = _annotation.title + ( _annotation.description ? ( '<br/>' + _annotation.description ) : '' ),
+            line = IriSP._(lines).find(function(line) {
+                return !IriSP._(line.annotations).find(function(a) {
+                    return a.begin < _annotation.end && a.end > _annotation.begin;
+                });
+            });
+        if (!line) {
+            line = { index: lines.length, annotations: []};
+            lines.push(line); 
+        }
+        line.annotations.push(_annotation);
+        var _top = ((1 - _this.overlap) * line.index) * _this.line_height,
+            color = ( typeof _annotation.color !== "undefined" && _annotation.color ? _annotation.color : _this.colors[_k % _this.colors.length] ),
+            r = parseInt(color.substr(1,2),16),
+            g = parseInt(color.substr(3,2),16),
+            b = parseInt(color.substr(5,2),16),
+            medcolor = saturate(r, g, b, .5),
+            lowcolor = saturate(r, g, b, .2);
+        var _data = {
+            color : color,
+            medcolor: medcolor,
+            lowcolor: lowcolor,
+            text: _fulltext.replace(/(\n|\r|\r\n)/mg,' ').replace(/(^.{120,140})[\s].+$/m,'$1&hellip;'),
+            left : _left,
+            width : _width,
+            top: _top,
+            height: _this.line_height - 1,
+            id : _annotation.id,
+            media_id : _annotation.getMedia().id,
+            from: _annotation.begin.toString(),
+            to: _annotation.end.toString()
+        };
+        var _html = Mustache.to_html(_this.annotationTemplate, _data),
+            _el = IriSP.jQuery(_html);
+        _el.mouseover(function() {
+                _annotation.trigger("select");
+            })
+            .mouseout(function() {
+                _annotation.trigger("unselect");
+            })
+            .click(function() {
+                _annotation.trigger("click");
+            })
+            .appendTo(list_$);
+        IriSP.attachDndData(_el, {
+        	title: _annotation.title,
+        	description: _annotation.description,
+        	uri: (typeof _annotation.url !== "undefined" 
+                ? _annotation.url
+                : (document.location.href.replace(/#.*$/,'') + '#id='  + _annotation.id)),
+            image: _annotation.thumbnail
+        });
+        _annotation.on("select", function() {
+            _this.$segments.each(function() {
+                var _segment = IriSP.jQuery(this);
+                _segment.css({
+                    background: _segment.hasClass("found") ? _this.faded_found_color : _segment.attr("data-low-color")
+                });
+            });
+            _el.css({
+                background: _el.hasClass("found") ? _this.found_color: color,
+                "z-index": ++zindex
+            });
+            if (_this.tooltip) {
+                _this.tooltip.show( _center, _top, _data.text, _data.color );
+            }
+        });
+        _annotation.on("unselect", function() {
+            if (_this.tooltip) {
+                _this.tooltip.hide();
+            }
+            _this.$segments.each(function() {
+                var _segment = IriSP.jQuery(this);
+                _segment.css("background", _segment.hasClass("found") ? _this.found_color : _segment.attr(searching ? "data-low-color" : "data-medium-color"));
+            });
+        });
+        _annotation.on("found", function() {
+            _el.css("background", _this.found_color).addClass("found");
+        });
+        _annotation.on("not-found", function() {
+            _el.css("background", lowcolor).removeClass("found");
+        });
+    });
+    
+    this.$.css({
+        width : this.width + "px",
+        height : (((1 - this.overlap) * lines.length + this.overlap) * this.line_height) + "px",
+        background : this.background,
+        margin: "1px 0"
+    });
+    this.insertSubwidget(
+        this.$.find(".Ldt-Segments-Tooltip"),
+        {
+            type: "Tooltip",
+            min_x: 0,
+            max_x: this.width
+        },
+        "tooltip"
+    );
+    this.$segments = this.$.find('.Ldt-Segments-Segment');
+    this.source.getAnnotations().on("search", function() {
+        searching = true;
+    });
+    this.source.getAnnotations().on("search-cleared", function() {
+        searching = false;
+        _this.$segments.each(function() {
+            var _segment = IriSP.jQuery(this);
+            _segment.css("background", _segment.attr("data-medium-color")).removeClass("found");
+        });
+    });
+};
+
+IriSP.Widgets.Segments.prototype.onTimeupdate = function(_time) {
+    var _x = Math.floor( this.width * _time / this.media.duration);
+    this.$.find('.Ldt-Segments-Position').css({
+        left: _x + "px"
+    });
+};
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