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/**
* Farbtastic Color Picker 1.2
* Š 2008 Steven Wittens
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
function writeNewLightModule ()
{
var htmlText='<div id="picker'+global_number_of_lights+'" class="picker">'+
'<div class="farbtastic"><div class="color" id="picker'+global_number_of_lights+'_color"></div>'+
'<div class="wheel"></div><div class="h-marker marker"></div></div></div>'+
'</form>'+
'<div class="sliders">'+
'<label id="picker'+global_number_of_lights+'_label_saturation" class="slidersLables">Saturation (100%)</label>'+
'<div class="slider">'+
'<input id="picker'+global_number_of_lights+'_slider_saturation" type="range" min="1" max="100" step="1" value="100" onchange="updateSliderSaturation(this.value,\'picker'+global_number_of_lights+'\')" oninput="updateSliderSaturation(this.value,\'picker'+global_number_of_lights+'\')"></div>'+
'<div id="picker'+global_number_of_lights+'_TestArea1"></div>'+
'<label id="picker'+global_number_of_lights+'_label_lumination" class="slidersLables">Lumination (50%)</label>'+
'<div class="slider"><input id="picker'+global_number_of_lights+'_slider_lumination" type="range" min="1" max="100" step="1" value="50" onchange="updateSliderLumination(this.value,\'picker'+global_number_of_lights+'\')" oninput="updateSliderLumination(this.value,\'picker'+global_number_of_lights+'\')"></div>'+
'<div id="picker'+global_number_of_lights+'_TestArea2"></div>'+
'</div>';
return htmlText;
}
function hslToRgb(h, s, l){
var r, g, b;
if(s == 0){
r = g = b = l; // achromatic
}else{
var hue2rgb = function hue2rgb(p, q, t){
if(t < 0) t += 1;
if(t > 1) t -= 1;
if(t < 1/6) return p + (q - p) * 6 * t;
if(t < 1/2) return q;
if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
return p;
}
var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
var p = 2 * l - q;
r = hue2rgb(p, q, h + 1/3);
g = hue2rgb(p, q, h);
b = hue2rgb(p, q, h - 1/3);
}
return [Math.round(r * 255), Math.round(g * 255), Math.round(b * 255)];
}
/**
* Converts an RGB color value to HSL. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes r, g, and b are contained in the set [0, 255] and
* returns h, s, and l in the set [0, 1].
*
* @param {number} r The red color value
* @param {number} g The green color value
* @param {number} b The blue color value
* @return {Array} The HSL representation
*/
function rgbToHsl(r, g, b){
r /= 255, g /= 255, b /= 255;
var max = Math.max(r, g, b), min = Math.min(r, g, b);
var h, s, l = (max + min) / 2;
if(max == min){
h = s = 0; // achromatic
}else{
var d = max - min;
s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
switch(max){
case r: h = (g - b) / d + (g < b ? 6 : 0); break;
case g: h = (b - r) / d + 2; break;
case b: h = (r - g) / d + 4; break;
}
h /= 6;
}
return [h, s, l];
}
jQuery.fn.farbtastic = function (callback) {
$.farbtastic(this, callback);
return this;
};
jQuery.farbtastic = function (container, callback) {
var container = $(container).get(0);
return container.farbtastic || (container.farbtastic = new jQuery._farbtastic(container, callback));
}
jQuery._farbtastic = function (container, callback) {
// Store farbtastic object
var fb = this;
var e = $('.farbtastic', container);
fb.wheel = $('.wheel', container).get(0);
// Dimensions
fb.radius = 32;
fb.square = 39;
fb.width = 70;
//document.getElementById("labellum1a").innerHTML = ' ' + container.id;
// Fix background PNGs in IE6
if (navigator.appVersion.match(/MSIE [0-6]\./)) {
$('*', e).each(function () {
if (this.currentStyle.backgroundImage != 'none') {
var image = this.currentStyle.backgroundImage;
image = this.currentStyle.backgroundImage.substring(5, image.length - 2);
$(this).css({
'backgroundImage': 'none',
'filter': "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=crop, src='" + image + "')"
});
}
});
}
/**
* Link to the given element(s) or callback.
*/
fb.linkTo = function (callback) {
// Unbind previous nodes
if (typeof fb.callback == 'object') {
$(fb.callback).unbind('keyup', fb.updateValue);
}
// Reset color
fb.color = null;
// Bind callback or elements
if (typeof callback == 'function') {
fb.callback = callback;
}
else if (typeof callback == 'object' || typeof callback == 'string') {
fb.callback = $(callback);
fb.callback.bind('keyup', fb.updateValue);
if (fb.callback.get(0).value) {
fb.setColor(fb.callback.get(0).value);
}
}
return this;
}
fb.updateValue = function (event) {
if (this.value && this.value != fb.color) {
fb.setColor(this.value);
}
}
/**
* Change color with HTML syntax #123456
*/
fb.setColor = function (color) {
var unpack = fb.unpack(color);
if (fb.color != color && unpack) {
fb.color = color;
fb.rgb = unpack;
fb.hsl = fb.RGBToHSL(fb.rgb);
fb.hsv = fb.HSLToHSV(fb.hsl);
fb.updateDisplay();
}
return this;
}
/**
* Change color with HSL triplet [0..1, 0..1, 0..1]
*/
fb.setHSL = function (hsl) {
fb.hsl = hsl.map(Number);
fb.hsv = fb.HSLToHSV(fb.hsl);
fb.rgb = fb.HSLToRGB(fb.hsl);
fb.color = fb.pack(fb.rgb);
fb.updateDisplay();
return this;
}
/**
* Change color with Red, Green and Blue values of 0..255
*/
fb.setRGB = function (r, g, b) {
fb.rgb = [r/255, g/255, b/255];
fb.hsl = fb.RGBToHSL(fb.rgb);
fb.hsv = fb.HSLToHSV(fb.hsl);
fb.color = fb.pack(fb.rgb);
fb.updateDisplay();
return this;
}
/**
* Change color with HSV triplet [0..1, 0..1, 0..1]
*/
fb.setHSV = function (hsv) {
fb.hsv = hsv.map(Number);
fb.hsl = fb.HSVToHSL(fb.hsv);
fb.rgb = fb.HSLToRGB(fb.hsl);
fb.color = fb.pack(fb.rgb);
fb.updateDisplay();
return this;
}
/**
* Return color as RGB triplet [0..255, 0..255, 0..255]
*/
fb.getRGB = function () {
return [Math.round(fb.rgb[0] * 255), Math.round(fb.rgb[1] * 255), Math.round(fb.rgb[2] * 255) ];
}
/////////////////////////////////////////////////////
/**
* Retrieve the coordinates of the given event relative to the center
* of the widget.
*/
fb.widgetCoords = function (event) {
var x, y;
var el = event.target || event.srcElement;
var reference = fb.wheel;
if (typeof event.offsetX != 'undefined') {
// Use offset coordinates and find common offsetParent
var pos = { x: event.offsetX, y: event.offsetY };
// Send the coordinates upwards through the offsetParent chain.
var e = el;
while (e) {
e.mouseX = pos.x;
e.mouseY = pos.y;
pos.x += e.offsetLeft;
pos.y += e.offsetTop;
e = e.offsetParent;
}
// Look for the coordinates starting from the wheel widget.
var e = reference;
var offset = { x: 0, y: 0 }
while (e) {
if (typeof e.mouseX != 'undefined') {
x = e.mouseX - offset.x;
y = e.mouseY - offset.y;
break;
}
offset.x += e.offsetLeft;
offset.y += e.offsetTop;
e = e.offsetParent;
}
// Reset stored coordinates
e = el;
while (e) {
e.mouseX = undefined;
e.mouseY = undefined;
e = e.offsetParent;
}
}
else {
// Use absolute coordinates
var pos = fb.absolutePosition(reference);
x = (event.pageX || 0*(event.clientX + $('html').get(0).scrollLeft)) - pos.x;
y = (event.pageY || 0*(event.clientY + $('html').get(0).scrollTop)) - pos.y;
}
// Subtract distance to middle
return { x: x - fb.width / 2, y: y - fb.width / 2 };
}
/**
* Mousedown handler
*/
fb.mousedown = function (event) {
// Capture mouse
if (!document.dragging) {
$(document).bind('mousemove', fb.mousemove).bind('mouseup', fb.mouseup);
document.dragging = true;
}
// Check which area is being dragged
var pos = fb.widgetCoords(event);
fb.circleDrag = Math.max(Math.abs(pos.x), Math.abs(pos.y)) * 2 > fb.square;
// Process
fb.mousemove(event);
return false;
}
/**
* Mousemove handler
*/
fb.mousemove = function (event) {
// Get coordinates relative to color picker center
var pos = fb.widgetCoords(event);
// Set new HSL parameters
if (fb.circleDrag) {
var hue = Math.atan2(pos.x, -pos.y) / 6.28;
if (hue < 0) hue += 1;
// fb.setHSL([hue, (document.getElementById(container.id+"_slider_saturation").value), (document.getElementById(container.id+"_slider_lumination").value)]);
fb.setHSL([hue, fb.hsl[1], fb.hsl[2]]);
window['global_Value_'+container.id+'_hue']=hue;
}
return false;
}
/**
* Mouseup handler
*/
fb.mouseup = function () {
// Uncapture mouse
$(document).unbind('mousemove', fb.mousemove);
$(document).unbind('mouseup', fb.mouseup);
document.dragging = false;
}
/**
* Update the markers and styles
*/
fb.updateDisplay = function () {
// Markers
var angle = fb.hsl[0] * 6.28;
$('.h-marker', e).css({
left: Math.round(Math.sin(angle) * fb.radius + fb.width / 2) + 'px',
top: Math.round(-Math.cos(angle) * fb.radius + fb.width / 2) + 'px'
});
// Saturation/Luminance gradient
$('.color', e).css('backgroundColor', fb.pack(fb.HSLToRGB([fb.hsl[0], 1, 0.5])));
// Linked elements or callback
if (typeof fb.callback == 'object') {
// Set background/foreground color
$(fb.callback).css({
backgroundColor: fb.color,
color: fb.hsl[2] > 0.5 ? '#000' : '#fff'
});
// Change linked value
$(fb.callback).each(function() {
if (this.value && this.value != fb.color) {
this.value = fb.color;
}
});
}
else if (typeof fb.callback == 'function') {
fb.callback.call(fb, fb.color);
}
}
/**
* Get absolute position of element
*/
fb.absolutePosition = function (el) {
var r = { x: el.offsetLeft, y: el.offsetTop };
// Resolve relative to offsetParent
if (el.offsetParent) {
var tmp = fb.absolutePosition(el.offsetParent);
r.x += tmp.x;
r.y += tmp.y;
}
return r;
};
/* Various color utility functions */
fb.pack = function (rgb) {
var r = Math.round(rgb[0] * 255);
var g = Math.round(rgb[1] * 255);
var b = Math.round(rgb[2] * 255);
return '#' + (r < 16 ? '0' : '') + r.toString(16) +
(g < 16 ? '0' : '') + g.toString(16) +
(b < 16 ? '0' : '') + b.toString(16);
}
fb.unpack = function (color) {
if (color.length == 7) {
return [parseInt('0x' + color.substring(1, 3)) / 255,
parseInt('0x' + color.substring(3, 5)) / 255,
parseInt('0x' + color.substring(5, 7)) / 255];
}
else if (color.length == 4) {
return [parseInt('0x' + color.substring(1, 2)) / 15,
parseInt('0x' + color.substring(2, 3)) / 15,
parseInt('0x' + color.substring(3, 4)) / 15];
}
}
fb.HSLToHSV = function (hsl) {
var h = hsl[0];
var v = hsl[2]+hsl[1]*(hsl[2]<.5?hsl[2]:1-hsl[2])
var s = 2*hsl[1]*(hsl[2]<.5?hsl[2]:1-hsl[2])/v;
return [h, s, v];
}
fb.HSVToHSL = function (hsv) {
var h = hsv[0];
var l = (2-hsv[1])*hsv[2]/2;
var s = 0;
if (l>0)
s = hsv[1]*hsv[2]/(l<0.5?2*l:2-2*l);
return [h, s, l];
}
fb.HSLToRGB = function (hsl) {
var m1, m2, r, g, b;
var h = hsl[0], s = hsl[1], l = hsl[2];
m2 = (l <= 0.5) ? l * (s + 1) : l + s - l*s;
m1 = l * 2 - m2;
return [this.hueToRGB(m1, m2, h+0.33333),
this.hueToRGB(m1, m2, h),
this.hueToRGB(m1, m2, h-0.33333)];
}
fb.hueToRGB = function (m1, m2, h) {
h = (h < 0) ? h + 1 : ((h > 1) ? h - 1 : h);
if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
if (h * 2 < 1) return m2;
if (h * 3 < 2) return m1 + (m2 - m1) * (0.66666 - h) * 6;
return m1;
}
fb.RGBToHSL = function (rgb) {
var min, max, delta, h, s, l;
var r = rgb[0], g = rgb[1], b = rgb[2];
min = Math.min(r, Math.min(g, b));
max = Math.max(r, Math.max(g, b));
delta = max - min;
l = (min + max) / 2;
s = 0;
if (l > 0 && l < 1) {
s = delta / (l < 0.5 ? (2 * l) : (2 - 2 * l));
}
h = 0;
if (delta > 0) {
if (max == r && max != g) h += (g - b) / delta;
if (max == g && max != b) h += (2 + (b - r) / delta);
if (max == b && max != r) h += (4 + (r - g) / delta);
h /= 6;
}
return [h, s, l];
}
// Install mousedown handler (the others are set on the document on-demand)
$('*', e).mousedown(fb.mousedown);
// Init color
fb.setColor('#000000');
// Set linked elements/callback
if (callback) {
fb.linkTo(callback);
}
}