Christopher Chedeau e2873cf85f Change internal format from 0xaarrggbb to 0xrrggbbaa
Summary:
The hex8 specified version is #rrggbbaa so it would be great to have the internal representation be 0xrrggbbaa to prevent confusion.

This pull request changes the internals of normalizeColor. It changes a lot of lines but there isn't any big changes.

Small changes:
- Use | instead of + for number operations
- Use x << 24 instead of x * (1 << 24)
- Have hslToRgb return pre shifted number

processColor is still sending colors the 0xaarrggbb format to native and tests still pass without changes.
Closes https://github.com/facebook/react-native/pull/5792

Reviewed By: svcscm

Differential Revision: D2910589

Pulled By: vjeux

fb-gh-sync-id: 6dd353f2edd5127f1762e7a57a65379d2a58e0c1
2016-02-07 10:14:29 -08:00

42 lines
1.1 KiB
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule processColor
*/
'use strict';
var Platform = require('Platform');
var normalizeColor = require('normalizeColor');
/* eslint no-bitwise: 0 */
function processColor(color) {
if (color === undefined || color === null) {
return color;
}
var int32Color = normalizeColor(color);
if (int32Color === null) {
return undefined;
}
// Converts 0xrrggbbaa into 0xaarrggbb
int32Color = (int32Color << 24 | int32Color >>> 8) >>> 0;
if (Platform.OS === 'android') {
// Android use 32 bit *signed* integer to represent the color
// We utilize the fact that bitwise operations in JS also operates on
// signed 32 bit integers, so that we can use those to convert from
// *unsigned* to *signed* 32bit int that way.
int32Color = int32Color | 0x0;
}
return int32Color;
}
module.exports = processColor;