mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-06-03 06:10:13 +02:00
74 lines
3.1 KiB
C
74 lines
3.1 KiB
C
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
|
|
#ifndef __nsCSSColorUtils_h
|
|
#define __nsCSSColorUtils_h
|
|
|
|
#include "nsColor.h"
|
|
|
|
// "Sufficient contrast" is determined by
|
|
// "Techniques For Accessibility Evalution And Repair Tools".
|
|
// See http://www.w3.org/TR/AERT#color-contrast
|
|
#define NS_SUFFICIENT_LUMINOSITY_DIFFERENCE 125000
|
|
#define NS_LUMINOSITY_DIFFERENCE(a, b) \
|
|
PR_ABS(NS_GetLuminosity(a) - NS_GetLuminosity(b))
|
|
|
|
// Weird color computing code stolen from winfe which was stolen
|
|
// from the xfe which was written originally by Eric Bina. So there.
|
|
// To determin colors based on the background brightness
|
|
void NS_Get3DColors(nscolor aResult[2], nscolor aBackgroundColor);
|
|
|
|
// To determine colors based on the background brightness and border color
|
|
void NS_GetSpecial3DColors(nscolor aResult[2],
|
|
nscolor aBackgroundColor,
|
|
nscolor aBorderColor);
|
|
|
|
// Determins brightness for a specific color
|
|
int NS_GetBrightness(PRUint8 aRed, PRUint8 aGreen, PRUint8 aBlue);
|
|
|
|
// Get Luminosity of a specific color. That is same as Y of YIQ color space.
|
|
// The range of return value is 0 to 255000.
|
|
PRInt32 NS_GetLuminosity(nscolor aColor);
|
|
|
|
// function to convert from RGB color space to HSV color space
|
|
void NS_RGB2HSV(nscolor aColor,PRUint16 &aHue,PRUint16 &aSat,PRUint16 &aValue);
|
|
// function to convert from HSV color space to RGB color space
|
|
void NS_HSV2RGB(nscolor &aColor,PRUint16 aHue,PRUint16 aSat,PRUint16 aValue);
|
|
|
|
#endif
|