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Implement Color component clamping for color conversion.

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This commit is contained in:
Jürg Lehni 2014-01-04 19:10:52 +01:00
parent 42bed58624
commit 9dea3f3b74
1 changed files with 20 additions and 2 deletions
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22
src/style/Color.js
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@ -647,6 +647,24 @@ var Color = Base.extend(new function() {
this._owner._changed(/*#=*/ Change.STYLE);
},
/**
* Returns a copy of the components array with all values clamped to
* valid numbers, based on the type of property they represent.
*/
_clamp: function() {
var components = this._components.slice(),
properties = this._properties;
if (this._type !== 'gradient') {
for (var i = 0, l = properties.length; i < l; i++) {
var value = components[i];
components[i] = properties[i] === 'hue'
? ((value % 360) + 360) % 360
: value < 0 ? 0 : value > 1 ? 1 : value;
}
}
return components;
},
/**
* @return {Number[]} the converted components as an array
*/
@ -655,11 +673,11 @@ var Color = Base.extend(new function() {
return this._type === type
? this._components.slice()
: (converter = converters[this._type + '-' + type])
? converter.apply(this, this._components)
? converter.apply(this, this._clamp())
// Convert to and from rgb if no direct converter exists
: converters['rgb-' + type].apply(this,
converters[this._type + '-rgb'].apply(this,
this._components));
this._clamp()));
},
/**