Roo.apply(Roo.lib.Color.prototype, {
+
+ rgb : null,
+ hsv : null,
+ hsl : null,
+
/**
* @returns an object representing the RGBA components of this Color. The red,
* green, and blue components are converted to integers in the range [0,255].
var alpha = (a === undefined ? 1 : Math.max(0, Math.min(1, a)));
// store the RGB components after clipping them if necessary
- var rgb =
+ this.rgb =
{
'r' : Math.max(0, Math.min(255, r)),
'g' : Math.max(0, Math.min(255, g)),
};
// initialise the HSV and HSL components to null
- var hsv = null;
- var hsl = null;
+
/*
* //private returns the HSV or HSL hue component of this RGBColor. The hue is in the
* maximum - the maximum of the RGB component values
* range - the range of the RGB component values
*/
- function getHue(maximum, range){
-
- // check whether the range is zero
- if (range == 0){
-
- // set the hue to zero (any hue is acceptable as the Color is grey)
- var hue = 0;
-
- }else{
-
- // determine which of the components has the highest value and set the hue
- switch (maximum){
-
- // red has the highest value
- case rgb.r:
- var hue = (rgb.g - rgb.b) / range * 60;
- if (hue < 0) hue += 360;
- break;
-
- // green has the highest value
- case rgb.g:
- var hue = (rgb.b - rgb.r) / range * 60 + 120;
- break;
+
- // blue has the highest value
- case rgb.b:
- var hue = (rgb.r - rgb.g) / range * 60 + 240;
- break;
+}
+// this does an 'exteds'
+Roo.extend(Roo.lib.RGBColor, Roo.lib.Color, {
+
+ getHue : function(maximum, range){
+
+ // check whether the range is zero
+ if (range == 0){
+
+ // set the hue to zero (any hue is acceptable as the Color is grey)
+ var hue = 0;
+
+ }else{
+
+ // determine which of the components has the highest value and set the hue
+ switch (maximum){
+
+ // red has the highest value
+ case rgb.r:
+ var hue = (rgb.g - rgb.b) / range * 60;
+ if (hue < 0) hue += 360;
+ break;
+
+ // green has the highest value
+ case rgb.g:
+ var hue = (rgb.b - rgb.r) / range * 60 + 120;
+ break;
+
+ // blue has the highest value
+ case rgb.b:
+ var hue = (rgb.r - rgb.g) / range * 60 + 240;
+ break;
+
+ }
+
}
-
- }
-
- // return the hue
- return hue;
-
- }
+
+ // return the hue
+ return hue;
+
+ },
/* //private Calculates and stores the HSV components of this RGBColor so that they can
* be returned be the getHSV function.
*/
- function calculateHSV(){
+ calculateHSV : function(){
// get the maximum and range of the RGB component values
var maximum = Math.max(rgb.r, rgb.g, rgb.b);
// store the HSV components
hsv =
{
- 'h' : getHue(maximum, range),
+ 'h' : this.getHue(maximum, range),
's' : (maximum == 0 ? 0 : 100 * range / maximum),
'v' : maximum / 2.55
};
- }
+ },
/* //private Calculates and stores the HSL components of this RGBColor so that they can
* be returned be the getHSL function.
*/
- function calculateHSL(){
+ calculateHSL : function(){
// get the maximum and range of the RGB component values
var maximum = Math.max(rgb.r, rgb.g, rgb.b);
// store the HSL components
hsl =
{
- 'h' : getHue(maximum, range),
+ 'h' : this.getHue(maximum, range),
's' : (range == 0 ? 0 : range / 2.55 / (l < 0.5 ? l * 2 : 2 - l * 2)),
'l' : 100 * l
};
- }
+ },
/**
* @returns the RGB and alpha components of this RGBColor as an object with r,
* g, b, and a properties. r, g, and b are in the range [0,255] and a is in
* the range [0,1].
*/
- this.getRGB = function(){
+ getRGB: function(){
// return the RGB components
return {
'a' : alpha
};
- };
+ },
/**
* @returns the HSV and alpha components of this RGBColor as an object with h,
* s, v, and a properties. h is in the range [0,360), s and v are in the range
* [0,100], and a is in the range [0,1].
*/
- this.getHSV = function(){
+ getHSV : function()
+ {
// calculate the HSV components if necessary
- if (hsv == null) calculateHSV();
+ if (hsv == null) this.calculateHSV();
// return the HSV components
return {
'a' : alpha
};
- };
+ },
/**
* @returns the HSL and alpha components of this RGBColor as an object with h,
* s, l, and a properties. h is in the range [0,360), s and l are in the range
* [0,100], and a is in the range [0,1].
*/
- this.getHSL = function(){
+ getHSL : function(){
// calculate the HSV components if necessary
- if (hsl == null) calculateHSL();
+ if (hsl == null) this.calculateHSL();
// return the HSL components
return {
'a' : alpha
};
- };
-
-}
-// this does an 'exteds'
-Roo.lib.RGBColor.prototype = new Roo.lib.Color();
-
+ }
+});
/*
* @class Roo.lib.HSVColor
/* Calculates and stores the HSL components of this HSVColor so that they can
* be returned be the getHSL function.
*/
- function calculateHSL(){
+ calculateHSL : function (){
// determine the lightness in the range [0,100]
var l = (2 - hsv.s / 100) * hsv.v / 2;
this.getHSL = function(){
// calculate the HSL components if necessary
- if (hsl == null) calculateHSL();
+ if (hsl == null) this.calculateHSL();
// return the HSL components
return {
/* Calculates and stores the HSV components of this HSLColor so that they can
* be returned be the getHSL function.
*/
- function calculateHSV(){
+ calculateHSV : function(){
// set a temporary value
var t = hsl.s * (hsl.l < 50 ? hsl.l : 100 - hsl.l) / 100;
this.getHSV = function(){
// calculate the HSV components if necessary
- if (hsv == null) calculateHSV();
+ if (hsv == null) this.calculateHSV();
// return the HSV components
return {
projects / roojs1 / commitdiff