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slider.js-e
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slider.js-e
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## Copyright (c) 2013, Empirical Modelling Group
## All rights reserved.
##
## See LICENSE.txt
${{
Slider = function(name, min, max, step, labelInterval, tickMarkInterval, labelDivisor, x, y, length, orientation, enabled) {
this.name = name;
this.obsName = root.currentObservableName();
this.min = min;
this.max = max;
this.step = step;
this.labelInterval = labelInterval;
this.tickMarkInterval = tickMarkInterval;
this.labelDivisor = labelDivisor;
this.x = x;
this.y = y;
this.length = length;
this.orientation = orientation;
this.enabled = enabled;
}
Slider.prototype.hash = function () {
return this.name+"$$"+
this.min+"$$"+
this.max+"$$"+
this.step+"$$"+
this.labelInterval+"$$"+
this.tickMarkInterval+"$$"+
this.labelDivisor+"$$"+
this.x+"$$"+
this.y+"$$"+
this.length+"$$"+
this.orientation+"$$"+
this.enabled;
};
}}$;
/**
* Create a slider input control
*
* @param [name] Prefix for _value and _preview observables. Default is the name of the observable being defined.
* @param min Minimum value of the slider
* @param max Maximum value of the slider
* @param [step Step interval
* @param [label_interval How frequently to display labels
* @param [tick_mark_interval How frequently to display tick marks
* @param [label_divisor]]]] Each label is divided by label_divisor before display
* @param x X-position
* @param y Y-position
* @param size Size in pixels
* @param [orientation] Either "horizontal", "vertical", "up", or "down"
* @param [enabled] Boolean True or False
*
* #canvas #input #slider
*
*/
func Slider { ${{
var argsProcessed;
var name;
if (typeof(arguments[0]) == "string") {
name = arguments[0];
argsProcessed = 1;
} else {
name = root.currentObservableName();
argsProcessed = 0;
if (name === undefined) {
eden.error(new Error("Slider: Every slider must have a name."), "error");
return undefined;
}
}
var min = arguments[argsProcessed];
argsProcessed++;
var max = arguments[argsProcessed];
argsProcessed++;
var step, labelInterval, labelDivisor, tickMarkInterval, x, y, length, orientation, enabled;
var arg, argType;
if (typeof(arguments[argsProcessed + 6]) == "number") {
step = arguments[argsProcessed];
labelInterval = arguments[argsProcessed + 1];
tickMarkInterval = arguments[argsProcessed + 2];
labelDivisor = arguments[argsProcessed + 3];
argsProcessed = argsProcessed + 4;
} else if (typeof(arguments[argsProcessed + 5]) == "number") {
step = arguments[argsProcessed];
labelInterval = arguments[argsProcessed + 1];
tickMarkInterval = arguments[argsProcessed + 2];
argsProcessed = argsProcessed + 3;
} else if (typeof(arguments[argsProcessed + 4]) == "number") {
step = arguments[argsProcessed];
labelInterval = arguments[argsProcessed + 1];
argsProcessed = argsProcessed + 2;
} else if (typeof(arguments[argsProcessed + 3]) == "number") {
step = arguments[argsProcessed];
argsProcessed++;
} else if (max - min > 1 && Math.floor(min) == min && Math.floor(max) == max) {
step = 1;
}
x = arguments[argsProcessed];
y = arguments[argsProcessed + 1];
length = arguments[argsProcessed + 2];
argsProcessed = argsProcessed + 3;
arg = arguments[argsProcessed];
argType = typeof(arg);
if (arg === undefined || argType == "string") {
orientation = arguments[argsProcessed];
argsProcessed++;
arg = arguments[argsProcessed];
}
enabled = arg;
if (labelInterval !== undefined) {
if (labelDivisor === undefined) {
labelDivisor = 1;
}
if (tickMarkInterval === undefined) {
tickMarkInterval = labelInterval;
}
}
if (orientation === undefined) {
orientation = "horizontal";
}
if (enabled === undefined) {
enabled = true;
}
return new Slider(name, min, max, step, labelInterval, tickMarkInterval, labelDivisor, x, y, length, orientation, enabled);
}}$; }
${{
Slider.prototype.draw = function (context) {
if (this.elements === undefined) {
var name = this.name;
var me = this;
var agent = root.lookup("Slider");
var cssClass;
if (this.orientation == "down"){
cssClass = "slider-down"
} else if (this.orientation == "up" || this.orientation == "vertical") {
cssClass = "slider-up"
} else {
cssClass = "slider-horizontal";
}
var disabled = this.enabled === false? "disabled=\"disabled\"" : "";
var inputHTML = '<input ' +
disabled +
'type="range" ' +
'min="' + this.min + '" ' +
'max="' + this.max + '" ';
if (this.step === undefined) {
inputHTML = inputHTML + 'step="0.0000001"';
} else {
inputHTML = inputHTML + 'step="' + this.step + '"';
}
inputHTML = inputHTML + '/>';
var inputJQ = $(inputHTML);
var inputElem = inputJQ.get(0);
this.sliderElement = inputElem;
var valueSym = root.lookup(name + "_value");
var previewSym = root.lookup(name + "_preview");
function setValue(obs, value, force) {
if (typeof(value) != "number") {
return;
}
var previewSym = root.lookup(name + "_preview");
var previewValue = previewSym.value();
if (previewValue !== value || force) {
var roundedValue;
if (value >= me.min && value <= me.max) {
inputElem.value = value;
roundedValue = parseFloat(inputElem.value);
if (roundedValue != value) {
//Value didn't match the step size.
obs.assign(roundedValue, root.scope, agent);
}
} else {
if (value < me.min) {
inputElem.value = me.min;
} else {
inputElem.value = me.max;
}
if (me.step !== undefined) {
roundedValue = Math.round(((value - me.min) / me.step).toPrecision(16)) * me.step + me.min;
if (roundedValue != value) {
obs.assign(roundedValue, root.scope, agent);
}
} else {
roundedValue = value;
}
}
if (previewValue != roundedValue) {
previewSym.assign(roundedValue, root.scope, EdenSymbol.hciAgent);
}
}
}
valueSym.addJSObserver("updateUI", setValue);
previewSym.addJSObserver("updateUI", function (obs, preview) {
if (typeof(preview) != "number") {
return;
}
var previewSym = root.lookup(name + "_preview");
var valueSym = root.lookup(name + "_value");
if (previewSym.last_modified_by !== EdenSymbol.hciAgent.name) {
var roundedValue;
if (preview >= me.min && preview <= me.max) {
inputElem.value = preview;
roundedValue = parseFloat(inputElem.value);
if (roundedValue != preview) {
//Value didn't match the step size.
obs.assign(roundedValue, root.scope, agent);
}
} else {
if (preview < me.min) {
inputElem.value = me.min;
} else {
inputElem.value = me.max;
}
if (me.step !== undefined) {
roundedValue = Math.round(((preview - me.min) / me.step).toPrecision(16)) * me.step + me.min;
if (roundedValue != value) {
obs.assign(roundedValue, root.scope, agent);
}
} else {
roundedValue = preview;
}
}
valueSym.assign(roundedValue, root.scope, agent);
}
});
inputJQ
.on("input", function(){
root.lookup(name + "_preview").assign(parseFloat(this.value), root.scope, EdenSymbol.hciAgent, true);
})
.on("mousedown", function () {
var mouseFollow = root.lookup("mouseFollow").value();
root.lookup("mouseDownZone").assign(undefined, root.scope, EdenSymbol.hciAgent, mouseFollow);
})
.on("mouseup", function () {
root.lookup(name + "_value").assign(parseFloat(this.value), root.scope, EdenSymbol.hciAgent, true);
edenUI.plugins.Canvas2D.endClick();
})
.on("keyup", function () {
root.lookup(name + "_value").assign(parseFloat(this.value), root.scope, EdenSymbol.hciAgent, true);
})
.on("mouseenter", function () {
var mouseFollow = root.lookup("mouseFollow").value();
root.lookup("mouseZone").assign(name, root.scope, EdenSymbol.hciAgent, mouseFollow);
});
var outerDiv = $('<div class="' + cssClass + '" ></div>');
if ((this.tickMarkInterval > 0 || this.labelInterval > 0) && this.max > this.min) {
var innerDiv = $('<div style="position: relative; height: 100%"></div>');
outerDiv.append(innerDiv);
if (this.tickMarkInterval > 0) {
for (var i = this.min; i <= this.max; i = i + this.tickMarkInterval) {
var percentage = (i - this.min) / (this.max - this.min) * 100;
//The offset is to get the centre of the slider thumb positioned exactly on the tick mark.
var offset = Math.round((50 - percentage) / 100 * 10);
var position = 'calc(' + percentage + '% + ' + offset + 'px)';
var tickMark = $('<div"></div>');
if (this.orientation == "horizontal") {
tickMark.css("left", position);
} else {
tickMark.css("top", position);
}
if ((i - this.min) % this.labelInterval == 0) {
tickMark.addClass("slider-major-tick-mark");
} else {
tickMark.addClass("slider-minor-tick-mark");
}
innerDiv.append(tickMark);
}
}
inputJQ.css("width", "100%");
innerDiv.append(inputJQ);
if (this.labelInterval > 0) {
if (this.orientation == "horizontal") {
var labelWidth = 100 / ((this.max - this.min) / this.labelInterval);
var halfLabelWidth = labelWidth / 2;
for (var i = this.min; i <= this.max; i = i + this.labelInterval) {
var percentage = (i - this.min) / (this.max - this.min) * 100 - halfLabelWidth;
var offset = Math.round((50 - percentage) / 100 * 10);
var labelText = i / this.labelDivisor;
var label = $(
'<div ' +
'class="slider-label" ' +
'style="left: calc(' + percentage + '% + ' + offset + 'px); width: ' + labelWidth + '%"' +
'>' +
labelText +
'</div>'
);
innerDiv.append(label);
}
} else {
for (var i = this.max; i >= this.min; i = i - this.labelInterval) {
var percentage = (this.max - i) / (this.max - this.min) * 100;
var offset = Math.round((50 - percentage) / 100 * 10 + 1);
var labelText;
if (this.orientation == "down") {
labelText = (this.max - i) / this.labelDivisor;
} else {
labelText = i / this.labelDivisor;
}
var label = $(
'<div ' +
'class="slider-label" ' +
'style="top: calc(' + percentage + '% + ' + offset + 'px - 0.5em)"' +
'>' +
labelText +
'</div>'
);
innerDiv.append(label);
}
}
}
} else {
outerDiv.append(inputJQ);
}
this.elements = [outerDiv.get(0)];
//Initialization
var value = valueSym.value();
var previewValue = previewSym.value();
if (value === undefined) {
if (previewValue === undefined) {
var defaultValue = (this.max - this.min) / 2 + this.min;
valueSym.assign(defaultValue, root.scope, agent);
setValue(valueSym, defaultValue, true);
} else {
valueSym.assign(previewValue, root.scope, agent);
setValue(valueSym, previewValue, true);
}
} else {
setValue(valueSym, value, true);
}
}
};
Slider.prototype.scale = function (scale, zoom, origin) {
if (!this.sliderElement) {
return;
}
var slider = this.sliderElement;
var sliderStyle = slider.style;
var divStyle = this.elements[0].style;
var width = Math.round(this.length * scale);
var isVertical = this.orientation == "up" || this.orientation == "down" || this.orientation == "vertical";
if (isVertical) {
sliderStyle.left = Math.round(-this.length / 2 * scale) + "px";
sliderStyle.top = Math.round((this.length / 2 - 10) * scale) + "px";
sliderStyle.width = width + "px";
divStyle.height = width + "px";
} else {
divStyle.width = width + "px";
}
divStyle.fontSize = zoom + "em";
divStyle.left = Math.round((this.x + origin.x) * scale) + "px";
divStyle.top = Math.round((this.y + origin.y) * scale) + "px";
if (this.step == undefined) {
slider.step = String((slider.max - slider.min) / (width - 1)).slice(0, 16);
}
};
Slider.prototype.toString = function() {
if (this.name == this.obsName) {
return "Slider(" + Eden.edenCodeForValues(this.min, this.max, this.step, this.labelInterval,
this.tickMarkInterval, this.labelDivisor, this.x, this.y, this.length, this.orientation,
this.enabled) + ")";
} else {
return "Slider(" + Eden.edenCodeForValues(this.name, this.min, this.max, this.step,
this.labelInterval, this.tickMarkInterval, this.labelDivisor, this.x, this.y,
this.length, this.orientation, this.enabled) + ")";
}
};
Slider.prototype.getEdenCode = Slider.prototype.toString;
}}$;