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spectrum.js
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spectrum.js
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"use strict";
var O = require("pop-observe");
var Swatch = require("./swatch");
module.exports = Spectrum;
function Spectrum(body, scope) {
this.resolution = 0;
this.divisions = 5;
this.index = 0;
this.swatches = [];
O.makeArrayObservable(this.swatches);
this._active = false;
this.animator = null;
}
Spectrum.prototype.resolutions = [
5,
25,
100
];
Spectrum.prototype.breadth = 1;
Spectrum.prototype.set = function set(value, user) {
for (var resolution = 0; resolution < this.resolutions.length - 1; resolution++) {
if (value % this.resolution[resolution] === 0) {
break;
}
}
var divisions = this.resolutions[resolution];
this.divisions = divisions;
this.resolution = resolution;
this.index = Math.floor(value / 100 * this.divisions);
this.update(user);
};
Object.defineProperty(Spectrum.prototype, "active", {
get: function () {
return this._active;
},
set: function (active) {
this._active = active;
if (active) {
this.scope.components.reticle.classList.add("active");
} else {
this.scope.components.reticle.classList.remove("active");
}
}
});
Spectrum.prototype.hookup = function add(id, component, scope) {
var components = scope.components;
if (id === "spectrum:iteration") {
components.swatch.style.backgroundColor = component.value.toStyle();
components.swatch.style.left = (component.value.index * 60) + 'px';
} else if (id === "this") {
components.spectrum.value = this.swatches;
}
};
Spectrum.prototype.handleEvent = function handleEvent(event) {
var key = event.key || String.fromCharCode(event.charCode);
var keyCode = event.keyCode || event.charCode;
if (event.type === "keypress") {
if (key === "h") {
return this.handleLeftCommand();
} else if (key === "l") {
return this.handleRightCommand();
} else if (key === "H") {
return this.handleShiftLeftCommand();
} else if (key === "L") {
return this.handleShiftRightCommand();
}
} else if (event.type === "keydown") {
if (keyCode === 27) {
} else if (keyCode === 37 && event.shiftKey) {
return this.handleShiftLeftCommand();
} else if (keyCode === 37) {
return this.handleLeftCommand();
} else if (keyCode === 39 && event.shiftKey) {
return this.handleShiftRightCommand();
} else if (keyCode === 39) {
return this.handleRightCommand();
}
}
};
Spectrum.prototype.handleShiftLeftCommand = function handleShiftLeftCommand() {
if (this.resolution <= 0) {
return;
}
this.setResolution(this.resolution - 1);
};
Spectrum.prototype.handleShiftRightCommand = function handleShiftRightCommand() {
if (this.resolution >= this.resolutions.length - 1) {
return;
}
this.setResolution(this.resolution + 1);
};
Spectrum.prototype.setResolution = function setResolution(resolution) {
var divisions = this.resolutions[resolution];
this.index = Math.round(this.index * (divisions - 1) / (this.divisions - 1));
this.divisions = divisions;
this.resolution = resolution;
this.update(false);
};
Spectrum.prototype.handleLeftCommand = function handleLeftCommand() {
this.index = Math.max(0, this.index - 1);
this.update(false);
};
Spectrum.prototype.handleRightCommand = function handleRightCommand() {
this.index = Math.min(this.index + 1, this.divisions - 1);
this.update(false);
};
Spectrum.prototype.update = function update(user) {
var offset = Math.floor(this.index);
var value = (this.breadth / (this.divisions - 1) * offset);
this.value = this.createSwatch(value, offset);
this.colorField.set(this.value, user);
};
Spectrum.prototype.draw = function draw() {
this.swatches.clear();
var offset = Math.floor(this.index);
for (var index = 0; index < this.divisions; index++) {
var value = (this.breadth / (this.divisions - 1) * index);
this.swatches.push(this.createSwatch(value, index - offset));
}
// TODO assert this.swatches[offset] equals this.value
this.scope.components.reticle.style.borderColor = this.colorField.contrastColor.toHSLString();
};