# colorPicker and colors

An advanced, fast but small (46.9KB, 19.9KB gZip) **javaScript** (only, framework independent) **color picker** (or color chooser for desktop use) that uses only one javaScript (.js) file (no extra HTML, CSS, images, etc... on IE9+ and internet browsers).<br />ColorPicker works in all browsers incl. IE6+ (an extra CSS has to be made to make it work in IE6 though and some additional setTimeout tricks to make it work in IE5.5)<br />
**colorPicker.js** uses **colors.js**, a small but comprehensive tool for color conversions / calculations (WCAG 2.0, contrast, color difference, layer mix, etc.)... 

With **colors.js** (~8.7k or way smaller if other color spaces and complex calculations are taken out...) you can also build your own simpler and / or smaller color pickers quite easy as demonstrated on the [demo page](http://dematte.at/cpn).<br />
**colors.js** can convert 182 different combinations of color spaces (rgb2HSV, RGB2hsl, rgb2RGB, HEX2Lab, ...)

##Demo & integration
See **demo** at [dematte.at/cpn](http://dematte.at/cpn) or check out a simple jQuery integration at [dematte.at/cpn/jQuery_implementation](http://www.dematte.at/cpn/jQuery_implementation/) and [jQuery_implementation/jqColor.js](jQuery_implementation)

<img src="images/screen-shot-all.png" />

All the WCAG 2.0 calculations for readability are also based on opacity levels of all layers<br>
Supported color spaces are: (* also displayed as colors in realtime)<br>
rgb *, hsv(b) *, hsl *, cmyk, cmy, Lab, XYZ, HEX

##colors.js

```javascript
var myColors = new Colors({ // all options have a default value...
    color: 'rgba(204, 82, 37, 0.8)', // initial color (#RGB, RGB, #RRGGBB, RRGGBB, rgb(r, g, b), ...)
    XYZMatrix: ..., // Observer = 2° (CIE 1931), Illuminant = D65  --- see source for dedtails
    XYZReference: ..., // back reference to XYZMatrix --- see source for dedtails
    grey: {r: 0.298954, g: 0.586434, b: 0.114612}, // CIE-XYZ 1931
    luminance: {r: 0.2126, g: 0.7152, b: 0.0722}, // W3C 2.0
    valueRanges: {rgb: {r: [0, 255], g: [0, 255], b: [0, 255]}, hsv:...}, // skip ranges if no conversion required
    customBG: '#808080' // the solid bgColor behind the chosen bgColor (saved color)
    convertCallback: function(colors, type){}, // callback function after color convertion for further calculations...
    allMixDetails: false // if set to true, Colors deliveres some more mixed layer informations for all color layers
});
```
##colorPicker.js

colorPicker uses an instance of Colors and passes the options to it, so some values are the same...

```javascript
var myColorPicker = new ColorPicker({
    color: ..., // see Colors...
    mode: 'rgb-b', // initial mode the color picker is starting with
    fps: 60, // the framerate colorPicker refreshes the display if no 'requestAnimationFrame'
    delayOffset: 8, // pixels offset when shifting mouse up/down inside input fields before it starts acting as slider
    CSSPrefix: 'cp-', // the standard prefix for (almost) all class declarations (HTML, CSS)
    size: 0, // one of the 4 sizes: 0 = L (large), 1 = S, 2 = XS, 3 = XXS; resize to see what happens...
    allMixDetails: true, // see Colors...
    alphaBG: 'w' // initial 3rd layer bgColor (w = white, c = custom (customBG), b = black);
    customBG: '#808080' // see Colors...
    noAlpha: true, // disable alpha input (all sliders are gone and current alpha therefore locked)
    cmyOnly: false, // display CMY instead of CMYK
    memoryColors: [{r: 100, g: 200, b: 10, a: 0.8}, ...] // array of colors in memory section
    opacityPositionRelative: undefined, // render opacity slider arrows in px or %
    customCSS: undefined, // if external stylesheet, internal will be ignored...
    appenTo: document.body, // the HTMLElement the colorPicker will be appended to on initialization
    noRangeBackground: false, // performance option: doesn't render backgrounds in input fields if set to false
    textRight: false, // not supported yet. Make numbers appear aligned right
    noHexButton: false, // button next to HEX input could be used for some trigger...
    noResize: false, // enable / disable resizing of colorPicker
    noRGBr: false, // active / passive button right to RGB-R display. Disables rendering of 'real' color possibilities...
    noRGBg: false, // same as above
    noRGBb: false, // same as above
    CSSStrength: 'div.', // not in use
    XYZMatrix: ..., // see Colors...
    XYZReference: ..., // see Colors...
    grey: ..., // see Colors...
    luminance: ..., // see Colors...
    devPicker: false // uses existing HTML instead of internal template for developing
    renderCallback: function(colors, mode){}, // callback on after rendering (for further rendering outside colorPicker)
    actionCallback: function(e, action){}, // callback on any action within colorPicker (buttons, sliders, ...)
    convertCallback: function(colors, type){}, // see Colors...
});
```

##The color model, the methods and more

After initializing Color or ColorPicker you'll get a clean but rhich model of the instance:

```javascript
myColors: {
    colors: { all kinds of color values...  see later},
    options: { all the options you set or that are set as default... },
    __proto__: { // all methods Color uses
        setColor: function(newCol, type, alpha) {},
        getColor: function(type) {},
        setCustomBackground: function(col) {},
        saveAsBackground: function() {},
        convertColor: function(color, type) {} // converts 182 different combinations
    }
}
```

```javascript
myColorPicker: {
    color: { // instance of Color inside colorPicker
        colors: { all kinds of color values... see later},
        options: { all the options you set or that are set as default... },
        __proto__: { all methods Color uses ... see above}
    },
    nodes: { all kinds of cashed nodes, textNodes and styles, etc... },
    __proto__: { // all methods ColorPicker uses
        setColor: function(newCol, type, alpha, forceRender) {},
        startRender: function(oneTime) {},
        stopRender: function() {},
        setCustomBackground: function(col) {},
        saveAsBackground: function() {},
        setMode: function(mode) {},
        destroyAll: function() {}
    }
}
```

The klass ColorPicker has some functions attached, used inside, exported for convenience...

```javascript
ColorPicker.addEvent = function(obj, type, func){}; // with built in cashe
ColorPicker.removeEvent = function(obj, type, func){};
ColorPicker.getOrigin = function(elm){};
ColorPicker.limitValue = function(value, min, max){};
ColorPicker.changeClass = function(elm, cln, newCln){}; // a bit tricky to use...
```

If `allMixDetails` in options is set to true you'll get the following color model

```javascript
HEX: // current color as HEX (upper case, 6 digits)
rgb: // current RGB color as normalized values (0 - 1)
    r: // red
    g: // green
    b: // blue
hsv: // current color values in normalized HSV (HSB) model
    h: // hue
    s: // saturation
    v: // value (brightness)
hsl: // current color values in normalized HSL model
    h: // hue
    s: // saturation
    l: // lightness
cmy: // current color values in normalized CMY model
    c: // cyan
    m: // magenta
    y: // yellow
cmyk: // current color values in normalized CMYK model
    c: // cyan
    m: // magenta
    y: // yellow
    k: // black
Lab: // current color values in normalized CIE 1976 L* a* b* (or CIELAB) model
    L: // lightness
    a: // color-opponent dimension
    b: // color-opponent dimension
XYZ: // current color values in normalized CIE 1931 XYZ model
    X: // mix (a linear combination) of cone response curves (LMS)
    Y: // luminance
    Z: // quasi-equal to blue stimulation (S)
RND: // all above colors in their defined ranges
    rgb: // current RGB color, rounded between 0 and 255
        r: // red (0 - 255)
        g: // green (0 - 255)
        b: // blue (0 - 255)
    hsv: // see above
        h: // hue (0 - 360 degrees)
        s: // saturation (0 - 100 %)
        v: // value (brightness) (0 - 100 %)
    hsl: // see above
        h: // hue (0 - 360 degrees)
        s: // saturation (0 - 100 %)
        l: // lightness (0 - 100 %)
    cmy: // see above
        c: // cyan (0 - 100 %)
        m: // magenta (0 - 100 %)
        y: // yellow (0 - 100 %)
    cmyk: // see above
        c: // cyan (0 - 100 %)
        m: // magenta (0 - 100 %)
        y: // yellow (0 - 100 %)
        k: // black (0 - 100 %)
    Lab: // see above
        L: // lightness (0 - 100 %)
        a: // color-opponent dimension (-128 - 127)
        b: // color-opponent dimension (-128 - 127)
    XYZ: // see above (values might be slightly above 100, dependent on matrix)
        X: // mix (a linear combination) of cone response curves (LMS) (0 - 100)
        Y: // luminance (0 - 100)
        Z: // quasi-equal to blue stimulation (S) (0 - 100)
background: // saved (background) color (saveAsBackground(){})
    rgb: // color in RGB model
        r: // red
        g: // green
        b: // blue
    RGB: // RGB color, rounded between 0 and 255
        r: // red (0 - 255)
        g: // green (0 - 255)
        b: // blue (0 - 255)
    alpha: // alpha or opacity value (0 - 1)
    equivalentGrey: // r = g = b = (0 - 255)
    rgbaMixBlack: // saved (background) color mixed with solid black color
        r: // red
        g: // green
        b: // blue
        a: // resulting alpha or opacity value (0 - 1)
        luminance: // luminance of resulting mix (0 - 1)
    rgbaMixCustom: // saved (background) color mixed with custom (solid) color
        r: // red
        g: // green
        b: // blue
        a: // resulting alpha or opacity value (0 - 1)
        luminance: // luminance of resulting mix (0 - 1)
    rgbaMixWhite: // saved (background) color mixed with solid white color
        r: // red
        g: // green
        b: // blue
        a: // resulting alpha or opacity value (0 - 1)
        luminance: // luminance of resulting mix (0 - 1)
alpha: // alpha or opacity value (0 - 1) of current color
equivalentGrey: // r = g = b = (0 - 1)
HUELuminance: // luminance of hue (in full brightnes and saturation) (0 - 1)
RGBLuminance: // luminance of the current color
hueRGB: // rounded integer value of current color in rgb model with full saturation and brightness
    r: // red (0 - 255)
    g: // green (0 - 255)
    b: // blue (0 - 255)
saveColor: // '' or 'web smart' or 'web save', if so.
webSave: // closest web-save color
    r: // red (0 - 255)
    g: // green (0 - 255)
    b: // blue (0 - 255)
webSmart: // closest web-smart color
    r: // red (0 - 255)
    g: // green (0 - 255)
    b: // blue (0 - 255)
rgbaMixBG: // color mix result: current color above saved (background) color
    r: // red (0 - 1)
    g: // green (0 - 1)
    b: // blue (0 - 1)
    a: // resulting alpha or opacity value (0 - 1)
    luminance: // luminance of resulting mix (0 - 1)
rgbaMixBGMixBlack: // color mix result: current color above saved (background) color above solid black
    r: // red (0 - 1)
    g: // green (0 - 1)
    b: // blue (0 - 1)
    a: // resulting alpha or opacity value (0 - 1)
    luminance: // luminance of resulting mix (0 - 1)
    luminanceDelta: // luminance difference between current color and resulting saved-black mix (0 - 1)
    hueDelta: // hue difference between current color and resulting custom-black mix (0 - 1)
    WCAG2Ratio: // readability vale (1 - 21, 1:1 to 21:1)
rgbaMixBGMixCustom: // color mix result: current color above saved (background) color above solid custom color
    r: // red (0 - 1)
    g: // green (0 - 1)
    b: // blue (0 - 1)
    a: // resulting alpha or opacity value (0 - 1)
    luminance: // luminance of resulting mix (0 - 1)
    luminanceDelta: // luminance difference between current color and resulting saved-custom mix (0 - 1)
    hueDelta: // hue difference between current color and resulting saved-custom mix (0 - 1)
    WCAG2Ratio: // readability vale (1 - 21, 1:1 to 21:1)
rgbaMixBGMixWhite: // color mix result: current color above saved (background) color above solid white
    r: // red (0 - 1)
    g: // green (0 - 1)
    b: // blue (0 - 1)
    a: // resulting alpha or opacity value (0 - 1)
    luminance: // luminance of resulting mix (0 - 1)
    luminanceDelta: // luminance difference between current color and resulting saved-white mix (0 - 1)
    hueDelta: // hue difference between current color and resulting saved-white mix (0 - 1)
    WCAG2Ratio: // readability vale (1 - 21, 1:1 to 21:1)
rgbaMixBlack: // color mix result: current color above solid black
    r: // red (0 - 1)
    g: // green (0 - 1)
    b: // blue (0 - 1)
    a: // resulting alpha or opacity value (0 - 1)
    luminance: // luminance of resulting mix (0 - 1)
    WCAG2Ratio: // readability vale (1 - 21, 1:1 to 21:1)
rgbaMixCustom: // color mix result: current color above solid custom color
    r: // red (0 - 1)
    g: // green (0 - 1)
    b: // blue (0 - 1)
    a: // resulting alpha or opacity value (0 - 1)
    luminance: // luminance of resulting mix (0 - 1)
    WCAG2Ratio: // readability vale (1 - 21, 1:1 to 21:1)
rgbaMixWhite: // color mix result: current color above solid white
    r: // red (0 - 1)
    g: // green (0 - 1)
    b: // blue (0 - 1)
    a: // resulting alpha or opacity value (0 - 1)
    luminance: // luminance of resulting mix (0 - 1)
    WCAG2Ratio: // readability vale (1 - 21, 1:1 to 21:1)
```