зеркало из https://github.com/mozilla/gecko-dev.git
116 строки
3.6 KiB
C++
116 строки
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998-2000 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef nsColor_h___
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#define nsColor_h___
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#include "gfxtypes.h"
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class nsString;
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/**
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* Color utilities and conversion functions
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* @file nsColor.h
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*/
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/**
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* Make a color out of r,g,b values. This assumes that the r,g,b values are
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* properly constrained to 0-255. This also assumes that a is 255.
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*/
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#define NS_RGB(_r,_g,_b) \
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((gfx_color) ((255 << 24) | ((_b)<<16) | ((_g)<<8) | (_r)))
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/**
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* Make a color out of r,g,b,a values. This assumes that the r,g,b,a
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* values are properly constrained to 0-255.
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*/
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#define NS_RGBA(_r,_g,_b,_a) \
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((gfx_color) (((_a) << 24) | ((_b)<<16) | ((_g)<<8) | (_r)))
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/**
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* Extract color components from gfx_color
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*/
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//@{
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#define NS_GET_R(_rgba) ((PRUint8) ((_rgba) & 0xff))
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#define NS_GET_G(_rgba) ((PRUint8) (((_rgba) >> 8) & 0xff))
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#define NS_GET_B(_rgba) ((PRUint8) (((_rgba) >> 16) & 0xff))
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#define NS_GET_A(_rgba) ((PRUint8) (((_rgba) >> 24) & 0xff))
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//@}
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/**
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* Translate a hex string to a color. Return true if it parses ok,
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* otherwise return false.
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* This accepts only 3, 6 or 9 digits
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*/
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extern "C" NS_GFX_(PRBool) NS_HexToRGB(const nsString& aBuf,
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gfx_color* aResult);
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/**
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* Translate a hex string to a color. Return true if it parses ok,
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* otherwise return false.
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* This version accepts 1 to 9 digits (missing digits are 0)
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*/
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extern "C" NS_GFX_(PRBool) NS_LooseHexToRGB(const nsString& aBuf,
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gfx_color* aResult);
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/**
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* Translate a color name to a color. Return true if it parses ok,
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* otherwise return false.
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*/
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extern "C" NS_GFX_(PRBool) NS_ColorNameToRGB(const nsString& aBuf,
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gfx_color* aResult);
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/**
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* Weird color computing code stolen from winfe which was stolen
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* from the xfe which was written originally by Eric Bina. So there.
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*/
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extern "C" NS_GFX_(void) NS_Get3DColors(gfx_color aResult[2],
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gfx_color aColor);
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/**
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* To determin colors based on the background brightness
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*/
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extern "C" NS_GFX_(void) NS_GetSpecial3DColors(gfx_color aResult[2],
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gfx_color aBackgroundColor,
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gfx_color aBorderColor);
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/**
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* Special method to brighten a Color and have it shift to white when
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* fully saturated.
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*/
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extern "C" NS_GFX_(gfx_color) NS_BrightenColor(gfx_color inColor);
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/**
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* Special method to darken a Color and have it shift to black when
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* darkest component underflows
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*/
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extern "C" NS_GFX_(gfx_color) NS_DarkenColor(gfx_color inColor);
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/**
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* Determins brightness for a specific color
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*/
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extern "C" NS_GFX_(int) NS_GetBrightness(PRUint8 aRed,
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PRUint8 aGreen,
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PRUint8 aBlue);
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#endif /* nsColor_h___ */
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