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Restructure Color constructor to remove need for Color.create().

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This commit is contained in:
Jürg Lehni 2013-04-22 19:07:38 -07:00
parent 1cbb303941
commit 2a53dbe60f
2 changed files with 63 additions and 58 deletions
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2
src/item/Raster.js
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@ -449,7 +449,7 @@ var Raster = this.Raster = Item.extend(/** @lends Raster# */{
components = [0, 0, 0, 0];
for (var i = 0; i < 4; i++)
components[i] = pixels[i] / 255;
return Color.create('rgb', components);
return new Color('rgb', components);
},
/**

119
src/style/Color.js
View file

@ -443,48 +443,61 @@ var Color = this.Color = Base.extend(new function() {
read = 0,
type,
components,
alpha;
alpha,
values;
// If first argument is an array, replace arguments with it.
if (Array.isArray(arg)) {
args = arg;
arg = args[0];
}
// Try type arg first
if (typeof arg === 'string' && arg in types) {
// First see if it's a type string argument, and if so, set it and
// shift it out of the arguments list.
var argType = arg != null && typeof arg;
if (argType === 'string' && arg in types) {
type = arg;
if (this._read)
read = 1; // will be increased below
// Shift type out of the arguments list, and process normally.
args = slice.call(args, 1);
arg = args[0];
arg = args[1];
if (Array.isArray(arg)) {
// Internal constructor that is called with the following
// arguments, without parsing: (type, componets, alpha)
components = arg;
alpha = args[2];
} else {
// For deserialization, shift out and process normally.
if (this._read)
read = 1; // Will be increased below
// Shift type out of the arguments, and process normally.
args = slice.call(args, 1);
argType = typeof arg;
}
}
var argType = arg != null && typeof arg,
if (!components) {
// Determine if there is a values array
values = argType === 'number'
? args
// Do not use Array.isArray() to also support arguments list
: argType === 'object' && arg.length != null
? arg
: null;
// The various branches below produces a values array if the values
// still need parsing, and a components array if they are already
// parsed.
if (values) {
if (!type)
// type = values.length >= 4
// ? 'cmyk'
// : values.length >= 3
type = values.length >= 3
? 'rgb'
: 'gray';
var length = types[type].length;
alpha = values[length];
if (this._read)
read += values === arguments
? length + (alpha != null ? 1 : 0)
: 1;
if (values.length > length)
values = slice.call(values, 0, length);
} else {
if (argType === 'string') {
? args
// Do not use Array.isArray() to also support arguments
: argType === 'object' && arg.length != null
? arg
: null;
// The various branches below produces a values array if the
// values still need parsing, and a components array if they are
// already parsed.
if (values) {
if (!type)
// type = values.length >= 4
// ? 'cmyk'
// : values.length >= 3
type = values.length >= 3
? 'rgb'
: 'gray';
var length = types[type].length;
alpha = values[length];
if (this._read)
read += values === arguments
? length + (alpha != null ? 1 : 0)
: 1;
if (values.length > length)
values = slice.call(values, 0, length);
} else if (argType === 'string') {
components = arg.match(/^#[0-9a-f]{3,6}$/i)
? hexToRgb(arg)
: nameToRgb(arg);
@ -494,6 +507,15 @@ var Color = this.Color = Base.extend(new function() {
type = arg._type;
components = arg._components.slice();
alpha = arg._alpha;
if (type === 'gradient') {
// Clone all points, since they belong to the other
// color already.
for (var i = 1, l = components.length; i < l; i++) {
var point = components[i];
if (point)
components[i] = point.clone();
}
}
} else if (arg._class === 'Gradient') {
type = 'gradient';
values = args;
@ -540,7 +562,9 @@ var Color = this.Color = Base.extend(new function() {
if (type === 'gradient')
this._id = ++Base._uid;
if (!components) {
// Produce a components array now, and parse values
// Produce a components array now, and parse values. Even if no
// values are defined, parsers are still called to produce
// defaults.
this._components = components = [];
var parse = parsers[this._type];
for (var i = 0, l = parse.length; i < l; i++) {
@ -577,8 +601,7 @@ var Color = this.Color = Base.extend(new function() {
* @return {Color} a copy of the color object
*/
clone: function() {
return Color.create(this._type, this._components.slice(),
this._alpha);
return new Color(this._type, this._components.slice(), this._alpha);
},
/**
@ -597,7 +620,7 @@ var Color = this.Color = Base.extend(new function() {
},
convert: function(type) {
return Color.create(type, this._convert(type), this._alpha);
return new Color(type, this._convert(type), this._alpha);
},
/**
@ -997,24 +1020,6 @@ var Color = this.Color = Base.extend(new function() {
// Export for backward compatibility code below.
_types: types,
create: function(type, components, alpha) {
var color = Base.create(Color);
color._type = type;
color._components = components;
color._alpha = alpha;
if (type === 'gradient') {
// Make sure gradients always have an id
color._id = ++Base._uid;
// Clone all points:
for (var i = 1, l = components.length; i < l; i++) {
var point = components[i];
if (point)
components[i] = point.clone();
}
}
return color;
},
random: function() {
var random = Math.random;
return new Color(random(), random(), random());