зеркало из https://github.com/mozilla/gecko-dev.git
60 строки
1.7 KiB
C
60 строки
1.7 KiB
C
/* -*- Mode: C; tab-width: 4; 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 Netscape 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/NPL/
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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 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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/* -*- Mode: C; tab-width: 4 -*-
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* il.h --- Exported image library interface
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*
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* $Id: il.h,v 1.3 1999/11/06 03:31:23 dmose%mozilla.org Exp $
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*/
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/*
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* global defines for image lib users
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*/
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#ifndef _IL_H
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#define _IL_H
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#include "ntypes.h"
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/* attr values */
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#define IL_ATTR_RDONLY 0
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#define IL_ATTR_RW 1
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#define IL_ATTR_TRANSPARENT 2
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#define IL_ATTR_HONOR_INDEX 4
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#undef ABS
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#define ABS(x) (((x) < 0) ? -(x) : (x))
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/* A fast but limited, perceptually-weighted color distance function */
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#define IL_COLOR_DISTANCE(r1, r2, g1, g2, b1, b2) \
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((ABS((g1) - (g2)) << 2) + (ABS((r1) - (r2)) << 1) + (ABS((b1) - (b2))))
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/* We don't distinguish between colors that are "closer" together
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than this. The appropriate setting is a subjective matter. */
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#define IL_CLOSE_COLOR_THRESHOLD 6
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#endif /* _IL_H */
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