+++ /dev/null
-Rico.Color = Class.create();
-
-Rico.Color.prototype = {
-
- initialize: function(red, green, blue) {
- this.rgb = { r: red, g : green, b : blue };
- },
-
- setRed: function(r) {
- this.rgb.r = r;
- },
-
- setGreen: function(g) {
- this.rgb.g = g;
- },
-
- setBlue: function(b) {
- this.rgb.b = b;
- },
-
- setHue: function(h) {
-
- // get an HSB model, and set the new hue...
- var hsb = this.asHSB();
- hsb.h = h;
-
- // convert back to RGB...
- this.rgb = Rico.Color.HSBtoRGB(hsb.h, hsb.s, hsb.b);
- },
-
- setSaturation: function(s) {
- // get an HSB model, and set the new hue...
- var hsb = this.asHSB();
- hsb.s = s;
-
- // convert back to RGB and set values...
- this.rgb = Rico.Color.HSBtoRGB(hsb.h, hsb.s, hsb.b);
- },
-
- setBrightness: function(b) {
- // get an HSB model, and set the new hue...
- var hsb = this.asHSB();
- hsb.b = b;
-
- // convert back to RGB and set values...
- this.rgb = Rico.Color.HSBtoRGB( hsb.h, hsb.s, hsb.b );
- },
-
- darken: function(percent) {
- var hsb = this.asHSB();
- this.rgb = Rico.Color.HSBtoRGB(hsb.h, hsb.s, Math.max(hsb.b - percent,0));
- },
-
- brighten: function(percent) {
- var hsb = this.asHSB();
- this.rgb = Rico.Color.HSBtoRGB(hsb.h, hsb.s, Math.min(hsb.b + percent,1));
- },
-
- blend: function(other) {
- this.rgb.r = Math.floor((this.rgb.r + other.rgb.r)/2);
- this.rgb.g = Math.floor((this.rgb.g + other.rgb.g)/2);
- this.rgb.b = Math.floor((this.rgb.b + other.rgb.b)/2);
- },
-
- isBright: function() {
- var hsb = this.asHSB();
- return this.asHSB().b > 0.5;
- },
-
- isDark: function() {
- return ! this.isBright();
- },
-
- asRGB: function() {
- return "rgb(" + this.rgb.r + "," + this.rgb.g + "," + this.rgb.b + ")";
- },
-
- asHex: function() {
- return "#" + this.rgb.r.toColorPart() + this.rgb.g.toColorPart() + this.rgb.b.toColorPart();
- },
-
- asHSB: function() {
- return Rico.Color.RGBtoHSB(this.rgb.r, this.rgb.g, this.rgb.b);
- },
-
- toString: function() {
- return this.asHex();
- }
-
-};
-
-Rico.Color.createFromHex = function(hexCode) {
- if(hexCode.length==4) {
- var shortHexCode = hexCode;
- var hexCode = '#';
- for(var i=1;i<4;i++) hexCode += (shortHexCode.charAt(i) +
-shortHexCode.charAt(i));
- }
- if ( hexCode.indexOf('#') == 0 )
- hexCode = hexCode.substring(1);
- var red = hexCode.substring(0,2);
- var green = hexCode.substring(2,4);
- var blue = hexCode.substring(4,6);
- return new Rico.Color( parseInt(red,16), parseInt(green,16), parseInt(blue,16) );
-}
-
-/**
- * Factory method for creating a color from the background of
- * an HTML element.
- */
-Rico.Color.createColorFromBackground = function(elem) {
-
- var actualColor = RicoUtil.getElementsComputedStyle($(elem), "backgroundColor", "background-color");
-
- if ( actualColor == "transparent" && elem.parentNode )
- return Rico.Color.createColorFromBackground(elem.parentNode);
-
- if ( actualColor == null )
- return new Rico.Color(255,255,255);
-
- if ( actualColor.indexOf("rgb(") == 0 ) {
- var colors = actualColor.substring(4, actualColor.length - 1 );
- var colorArray = colors.split(",");
- return new Rico.Color( parseInt( colorArray[0] ),
- parseInt( colorArray[1] ),
- parseInt( colorArray[2] ) );
-
- }
- else if ( actualColor.indexOf("#") == 0 ) {
- return Rico.Color.createFromHex(actualColor);
- }
- else
- return new Rico.Color(255,255,255);
-}
-
-Rico.Color.HSBtoRGB = function(hue, saturation, brightness) {
-
- var red = 0;
- var green = 0;
- var blue = 0;
-
- if (saturation == 0) {
- red = parseInt(brightness * 255.0 + 0.5);
- green = red;
- blue = red;
- }
- else {
- var h = (hue - Math.floor(hue)) * 6.0;
- var f = h - Math.floor(h);
- var p = brightness * (1.0 - saturation);
- var q = brightness * (1.0 - saturation * f);
- var t = brightness * (1.0 - (saturation * (1.0 - f)));
-
- switch (parseInt(h)) {
- case 0:
- red = (brightness * 255.0 + 0.5);
- green = (t * 255.0 + 0.5);
- blue = (p * 255.0 + 0.5);
- break;
- case 1:
- red = (q * 255.0 + 0.5);
- green = (brightness * 255.0 + 0.5);
- blue = (p * 255.0 + 0.5);
- break;
- case 2:
- red = (p * 255.0 + 0.5);
- green = (brightness * 255.0 + 0.5);
- blue = (t * 255.0 + 0.5);
- break;
- case 3:
- red = (p * 255.0 + 0.5);
- green = (q * 255.0 + 0.5);
- blue = (brightness * 255.0 + 0.5);
- break;
- case 4:
- red = (t * 255.0 + 0.5);
- green = (p * 255.0 + 0.5);
- blue = (brightness * 255.0 + 0.5);
- break;
- case 5:
- red = (brightness * 255.0 + 0.5);
- green = (p * 255.0 + 0.5);
- blue = (q * 255.0 + 0.5);
- break;
- }
- }
-
- return { r : parseInt(red), g : parseInt(green) , b : parseInt(blue) };
-}
-
-Rico.Color.RGBtoHSB = function(r, g, b) {
-
- var hue;
- var saturation;
- var brightness;
-
- var cmax = (r > g) ? r : g;
- if (b > cmax)
- cmax = b;
-
- var cmin = (r < g) ? r : g;
- if (b < cmin)
- cmin = b;
-
- brightness = cmax / 255.0;
- if (cmax != 0)
- saturation = (cmax - cmin)/cmax;
- else
- saturation = 0;
-
- if (saturation == 0)
- hue = 0;
- else {
- var redc = (cmax - r)/(cmax - cmin);
- var greenc = (cmax - g)/(cmax - cmin);
- var bluec = (cmax - b)/(cmax - cmin);
-
- if (r == cmax)
- hue = bluec - greenc;
- else if (g == cmax)
- hue = 2.0 + redc - bluec;
- else
- hue = 4.0 + greenc - redc;
-
- hue = hue / 6.0;
- if (hue < 0)
- hue = hue + 1.0;
- }
-
- return { h : hue, s : saturation, b : brightness };
-}
-
projects / rails.git / blobdiff