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README.md

tinyColorPicker and colors

Looking for mobile first, tiny foot print, fast, scaleable, flexible, pluggable and a rich color model...
This small (4.9KB gZip, 10.8KB minified, no HTML, images or css needed) HSB colorpicker is based on a subset of colors.js from it's big brother colorPicker for a precise and rich color model, supports all modern features like touch and MS pointer, GPU accelerated rendering, battery friendly requestAnimationFrame and provides a lot of hooks for developers to write plugins.

tinyColorPicker now supports AMD / CommonJS and bower.

##Demo See demo at dematte.at/tinyColorPicker

All the WCAG 2.0 calculations for readability are also based on opacity levels of all layers.
Supported color spaces are: rgb, hsv(b), hsl, HEX

Usage

<script type="text/javascript" src="jqColorPicker.min.js"></script>
<script type="text/javascript">
    $('.color').colorPicker(); // that's it
    // $().colorPicker.destroy(); // for singlePageApps
</script>

AMD / CommonJS wrapper

tinyColorPicker now supports AMD and CommonJS import (thanks to Munawwar).

bower support

tinyColorPicker can be received by bower:

bower install tinyColorPicker

##jqColorPicker.js

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

$('.color').colorPicker({
    color: ..., // see Colors...
    customBG: '#FFF' // see Colors...
    animationSpeed: 150, // toggle animation speed
    GPU: true, // use transform: translate3d
    doRender: true | 'selector', // manipulate color and bgColor of input field (on certain elements if selector)
    opacity: true, // enable / disable alpha slider
    renderCallback: function($elm, toggled) {}, // this === instance; $elm: the input field;toggle === true -> just appeared; false -> opposite; else -> is rendering on pointer move
    // toggled true/false can for example be used to check if the $elm has a certain className and then hide alpha,...
    buildCallback: function($elm) {}, // this === instance; $elm: the UI
    css: '', // replaces existing css
    cssAddon: '', // adds css to existing
    margin: '', // positioning margin (can also be set in cssAddon)
    scrollResize: true // toggle for reposition colorPicker on window.resize/scroll
    gap: 4 // gap to right and bottom edge of view port if repositioned to fit
    preventFocus: false // prevents default on focus of input fields (e.g. no keyboard on mobile)
    body: document.body // the element where the events are attached to (touchstart, mousedown, pointerdown, focus, click, change),
    forceAlpha: // force printing alpha channel (undefined = auto; false = never print alpha)
});

####Some tips

The renderCallback can be used as openCallback and closeCallback:

renderCallback: function($elm, toggled) {
    if (toggled === true) { // simple, lightweight check
        // ... like an open callback
    } else if (toggled === false) {
        // ... like a close callback
    }
}

Here you can fire events if necessary or check for a className or data attribute on $elm to see if there is a hint for hiding the opacity slider:

this.$UI.find('.cp-alpha').toggle(!$elm.hasClass('no-alpha'));

##colors.js

This section only shows the options for color.js. They are picked up automatically if set in $('.color').colorPicker

Colors({ // all options have a default value...
    color: 'rgba(204, 82, 37, 0.8)', // initial color (#RGB, RGB, #RRGGBB, RRGGBB, rgb(r, g, b), ...)
    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...
});

##The color model, the methods and more

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

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 (See https://github.com/PitPik/colorPicker for details)
        setColor: function(newCol, type, alpha) {},
        setCustomBackground: function(col) {},
        saveAsBackground: function() {},
        // new method: converts current color to HTML-String like: rgba(123, 234, 0, 0.89)
        // forceAlpha === true / false -> alway / never print alpha, === undefined -> auto
        toString: function('rgb' || 'hsl' || 'hex' || '' -> 'rgb', forceAlpha) {},
    }
}

colors.js is a quite handy tool for color calculations/conversion (gray value, contrast and luminance, etc...). It can also calculate layer mixes between background and foreground colors and therefore make calculations about readability (WCAG 2.0 standard). If you need more complex calculations or more color spaces, use the version from https://github.com/PitPik/colorPicker. It supports also cmy, cmyk, XYZ and Lab.

myColorPicker: {
    $trigger: ... // jQuery object of active trigger or null if none active
    $UI: ... // jQuery object of the colorPicker HTML element
    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}
    },
    __proto__: { // all methods ColorPicker uses
        render: function() {},
        toggle: function(openClose) {} // openClose: true = open; false = close
    }
}

The color model

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
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 %)
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)
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)
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)
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)