2001-09-25 05:32:19 +04:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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2004-04-18 01:52:36 +04:00
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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2001-03-08 05:41:16 +03:00
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*
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2004-04-18 01:52:36 +04:00
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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2001-03-08 05:41:16 +03:00
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*
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2001-09-25 05:32:19 +04:00
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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2001-03-08 05:41:16 +03:00
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*
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* The Original Code is mozilla.org code.
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*
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2004-04-18 01:52:36 +04:00
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* The Initial Developer of the Original Code is
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2001-09-25 05:32:19 +04:00
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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2001-03-08 05:41:16 +03:00
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*
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2001-09-25 05:32:19 +04:00
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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2004-04-18 01:52:36 +04:00
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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2001-09-25 05:32:19 +04:00
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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2004-04-18 01:52:36 +04:00
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* use your version of this file under the terms of the MPL, indicate your
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2001-09-25 05:32:19 +04:00
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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2004-04-18 01:52:36 +04:00
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* the terms of any one of the MPL, the GPL or the LGPL.
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2001-09-25 05:32:19 +04:00
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*
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* ***** END LICENSE BLOCK ***** */
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2001-03-08 05:41:16 +03:00
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2006-03-25 08:47:31 +03:00
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/* representation of length values in computed style data */
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2001-03-08 05:41:16 +03:00
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#include "nsStyleCoord.h"
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#include "nsString.h"
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#include "nsCRT.h"
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2008-10-01 09:50:52 +04:00
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#include "prlog.h"
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2009-11-02 22:36:43 +03:00
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#include "nsMathUtils.h"
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2010-07-03 08:18:55 +04:00
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#include "nsStyleContext.h"
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2001-03-08 05:41:16 +03:00
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nsStyleCoord::nsStyleCoord(nsStyleUnit aUnit)
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: mUnit(aUnit)
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{
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NS_ASSERTION(aUnit < eStyleUnit_Percent, "not a valueless unit");
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if (aUnit >= eStyleUnit_Percent) {
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mUnit = eStyleUnit_Null;
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}
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mValue.mInt = 0;
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}
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nsStyleCoord::nsStyleCoord(PRInt32 aValue, nsStyleUnit aUnit)
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: mUnit(aUnit)
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{
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//if you want to pass in eStyleUnit_Coord, don't. instead, use the
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//constructor just above this one... MMP
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2007-05-11 10:00:26 +04:00
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NS_ASSERTION((aUnit == eStyleUnit_Enumerated) ||
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2001-03-08 05:41:16 +03:00
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(aUnit == eStyleUnit_Integer), "not an int value");
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2007-05-11 10:00:26 +04:00
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if ((aUnit == eStyleUnit_Enumerated) ||
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2001-03-08 05:41:16 +03:00
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(aUnit == eStyleUnit_Integer)) {
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mValue.mInt = aValue;
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}
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else {
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mUnit = eStyleUnit_Null;
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mValue.mInt = 0;
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}
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}
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nsStyleCoord::nsStyleCoord(float aValue, nsStyleUnit aUnit)
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: mUnit(aUnit)
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{
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2009-11-02 22:36:43 +03:00
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if (aUnit < eStyleUnit_Percent || aUnit >= eStyleUnit_Coord) {
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NS_NOTREACHED("not a float value");
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Reset();
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} else {
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2001-03-08 05:41:16 +03:00
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mValue.mFloat = aValue;
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}
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}
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2010-07-03 08:18:55 +04:00
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// FIXME: In C++0x we can rely on the default copy constructor since
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// default copy construction is defined properly for unions. But when
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// can we actually use that? (It seems to work in gcc 4.4.)
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2001-03-08 05:41:16 +03:00
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nsStyleCoord& nsStyleCoord::operator=(const nsStyleCoord& aCopy)
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{
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mUnit = aCopy.mUnit;
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if ((eStyleUnit_Percent <= mUnit) && (mUnit < eStyleUnit_Coord)) {
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mValue.mFloat = aCopy.mValue.mFloat;
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}
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2010-09-11 20:27:13 +04:00
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else if (IsPointerValue()) {
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2010-07-03 08:18:55 +04:00
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mValue.mPointer = aCopy.mValue.mPointer;
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}
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2001-03-08 05:41:16 +03:00
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else {
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mValue.mInt = aCopy.mValue.mInt;
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}
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return *this;
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}
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PRBool nsStyleCoord::operator==(const nsStyleCoord& aOther) const
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{
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2010-08-31 20:05:12 +04:00
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if (mUnit != aOther.mUnit) {
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return PR_FALSE;
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2001-03-08 05:41:16 +03:00
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}
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2010-08-31 20:05:12 +04:00
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switch (mUnit) {
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case eStyleUnit_Null:
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case eStyleUnit_Normal:
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case eStyleUnit_Auto:
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case eStyleUnit_None:
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return PR_TRUE;
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case eStyleUnit_Percent:
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case eStyleUnit_Factor:
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case eStyleUnit_Degree:
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case eStyleUnit_Grad:
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case eStyleUnit_Radian:
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return mValue.mFloat == aOther.mValue.mFloat;
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case eStyleUnit_Coord:
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case eStyleUnit_Integer:
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case eStyleUnit_Enumerated:
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return mValue.mInt == aOther.mValue.mInt;
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case eStyleUnit_Calc:
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2010-09-11 20:27:13 +04:00
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return *this->GetCalcValue() == *aOther.GetCalcValue();
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2010-08-31 20:05:12 +04:00
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}
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NS_ABORT_IF_FALSE(PR_FALSE, "unexpected unit");
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2001-03-08 05:41:16 +03:00
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return PR_FALSE;
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}
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2010-05-11 19:49:44 +04:00
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void nsStyleCoord::Reset()
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2001-03-08 05:41:16 +03:00
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{
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mUnit = eStyleUnit_Null;
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mValue.mInt = 0;
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}
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void nsStyleCoord::SetCoordValue(nscoord aValue)
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{
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mUnit = eStyleUnit_Coord;
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mValue.mInt = aValue;
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}
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void nsStyleCoord::SetIntValue(PRInt32 aValue, nsStyleUnit aUnit)
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{
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2007-05-11 10:00:26 +04:00
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NS_ASSERTION((aUnit == eStyleUnit_Enumerated) ||
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2001-03-08 05:41:16 +03:00
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(aUnit == eStyleUnit_Integer), "not an int value");
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2007-05-11 10:00:26 +04:00
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if ((aUnit == eStyleUnit_Enumerated) ||
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2001-03-08 05:41:16 +03:00
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(aUnit == eStyleUnit_Integer)) {
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mUnit = aUnit;
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mValue.mInt = aValue;
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}
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else {
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Reset();
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}
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}
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void nsStyleCoord::SetPercentValue(float aValue)
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{
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mUnit = eStyleUnit_Percent;
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mValue.mFloat = aValue;
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}
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void nsStyleCoord::SetFactorValue(float aValue)
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{
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mUnit = eStyleUnit_Factor;
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mValue.mFloat = aValue;
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}
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2009-11-02 22:36:43 +03:00
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void nsStyleCoord::SetAngleValue(float aValue, nsStyleUnit aUnit)
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{
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if (aUnit == eStyleUnit_Degree ||
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aUnit == eStyleUnit_Grad ||
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aUnit == eStyleUnit_Radian) {
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mUnit = aUnit;
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mValue.mFloat = aValue;
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} else {
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NS_NOTREACHED("not an angle value");
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Reset();
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}
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}
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2010-09-11 20:27:13 +04:00
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void nsStyleCoord::SetCalcValue(Calc* aValue)
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2010-07-03 08:18:55 +04:00
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{
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2010-09-11 20:27:13 +04:00
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mUnit = eStyleUnit_Calc;
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mValue.mPointer = aValue;
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2010-07-03 08:18:55 +04:00
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}
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2010-05-11 19:49:44 +04:00
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void nsStyleCoord::SetNormalValue()
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2001-03-08 05:41:16 +03:00
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{
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mUnit = eStyleUnit_Normal;
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mValue.mInt = 0;
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}
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2010-05-11 19:49:44 +04:00
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void nsStyleCoord::SetAutoValue()
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2001-03-08 05:41:16 +03:00
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{
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mUnit = eStyleUnit_Auto;
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mValue.mInt = 0;
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}
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2010-05-11 19:49:44 +04:00
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void nsStyleCoord::SetNoneValue()
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2007-05-11 10:01:31 +04:00
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{
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mUnit = eStyleUnit_None;
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mValue.mInt = 0;
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}
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2009-11-02 22:36:43 +03:00
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// accessors that are not inlined
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double
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nsStyleCoord::GetAngleValueInRadians() const
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{
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double angle = mValue.mFloat;
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switch (GetUnit()) {
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case eStyleUnit_Radian: return angle;
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case eStyleUnit_Degree: return angle * M_PI / 180.0;
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case eStyleUnit_Grad: return angle * M_PI / 200.0;
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default:
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NS_NOTREACHED("unrecognized angular unit");
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return 0.0;
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}
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}
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2008-10-01 09:50:52 +04:00
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// used by nsStyleSides and nsStyleCorners
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#define COMPARE_INDEXED_COORD(i) \
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PR_BEGIN_MACRO \
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if (mUnits[i] != aOther.mUnits[i]) \
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return PR_FALSE; \
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if ((eStyleUnit_Percent <= mUnits[i]) && \
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(mUnits[i] < eStyleUnit_Coord)) { \
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if (mValues[i].mFloat != aOther.mValues[i].mFloat) \
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return PR_FALSE; \
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} \
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else { \
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if (mValues[i].mInt != aOther.mValues[i].mInt) \
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return PR_FALSE; \
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} \
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PR_END_MACRO
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2001-03-08 05:41:16 +03:00
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2010-05-11 19:49:44 +04:00
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nsStyleSides::nsStyleSides()
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2001-03-08 05:41:16 +03:00
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{
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2002-02-05 04:41:13 +03:00
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memset(this, 0x00, sizeof(nsStyleSides));
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2001-03-08 05:41:16 +03:00
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}
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PRBool nsStyleSides::operator==(const nsStyleSides& aOther) const
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{
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2008-10-01 09:50:52 +04:00
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NS_FOR_CSS_SIDES(i) {
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COMPARE_INDEXED_COORD(i);
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2001-03-08 05:41:16 +03:00
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}
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2008-10-01 09:50:52 +04:00
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return PR_TRUE;
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2001-03-08 05:41:16 +03:00
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}
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2010-05-11 19:49:44 +04:00
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void nsStyleSides::Reset()
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2001-03-08 05:41:16 +03:00
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{
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2002-02-05 04:41:13 +03:00
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memset(this, 0x00, sizeof(nsStyleSides));
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2001-03-08 05:41:16 +03:00
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}
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2008-10-01 09:50:52 +04:00
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nsStyleCorners::nsStyleCorners()
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{
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memset(this, 0x00, sizeof(nsStyleCorners));
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}
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PRBool
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nsStyleCorners::operator==(const nsStyleCorners& aOther) const
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{
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NS_FOR_CSS_HALF_CORNERS(i) {
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COMPARE_INDEXED_COORD(i);
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}
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return PR_TRUE;
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}
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2010-05-11 19:49:44 +04:00
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void nsStyleCorners::Reset()
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2008-10-01 09:50:52 +04:00
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{
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memset(this, 0x00, sizeof(nsStyleCorners));
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}
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// Validation of NS_SIDE_IS_VERTICAL and NS_HALF_CORNER_IS_X.
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#define CASE(side, result) \
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PR_STATIC_ASSERT(NS_SIDE_IS_VERTICAL(side) == result)
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CASE(NS_SIDE_TOP, PR_FALSE);
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CASE(NS_SIDE_RIGHT, PR_TRUE);
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CASE(NS_SIDE_BOTTOM, PR_FALSE);
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CASE(NS_SIDE_LEFT, PR_TRUE);
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#undef CASE
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#define CASE(corner, result) \
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PR_STATIC_ASSERT(NS_HALF_CORNER_IS_X(corner) == result)
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CASE(NS_CORNER_TOP_LEFT_X, PR_TRUE);
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CASE(NS_CORNER_TOP_LEFT_Y, PR_FALSE);
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CASE(NS_CORNER_TOP_RIGHT_X, PR_TRUE);
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CASE(NS_CORNER_TOP_RIGHT_Y, PR_FALSE);
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CASE(NS_CORNER_BOTTOM_RIGHT_X, PR_TRUE);
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CASE(NS_CORNER_BOTTOM_RIGHT_Y, PR_FALSE);
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CASE(NS_CORNER_BOTTOM_LEFT_X, PR_TRUE);
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CASE(NS_CORNER_BOTTOM_LEFT_Y, PR_FALSE);
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#undef CASE
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// Validation of NS_HALF_TO_FULL_CORNER.
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#define CASE(corner, result) \
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PR_STATIC_ASSERT(NS_HALF_TO_FULL_CORNER(corner) == result)
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CASE(NS_CORNER_TOP_LEFT_X, NS_CORNER_TOP_LEFT);
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CASE(NS_CORNER_TOP_LEFT_Y, NS_CORNER_TOP_LEFT);
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CASE(NS_CORNER_TOP_RIGHT_X, NS_CORNER_TOP_RIGHT);
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CASE(NS_CORNER_TOP_RIGHT_Y, NS_CORNER_TOP_RIGHT);
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CASE(NS_CORNER_BOTTOM_RIGHT_X, NS_CORNER_BOTTOM_RIGHT);
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CASE(NS_CORNER_BOTTOM_RIGHT_Y, NS_CORNER_BOTTOM_RIGHT);
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CASE(NS_CORNER_BOTTOM_LEFT_X, NS_CORNER_BOTTOM_LEFT);
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CASE(NS_CORNER_BOTTOM_LEFT_Y, NS_CORNER_BOTTOM_LEFT);
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#undef CASE
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// Validation of NS_FULL_TO_HALF_CORNER.
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#define CASE(corner, vert, result) \
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PR_STATIC_ASSERT(NS_FULL_TO_HALF_CORNER(corner, vert) == result)
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CASE(NS_CORNER_TOP_LEFT, PR_FALSE, NS_CORNER_TOP_LEFT_X);
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CASE(NS_CORNER_TOP_LEFT, PR_TRUE, NS_CORNER_TOP_LEFT_Y);
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CASE(NS_CORNER_TOP_RIGHT, PR_FALSE, NS_CORNER_TOP_RIGHT_X);
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CASE(NS_CORNER_TOP_RIGHT, PR_TRUE, NS_CORNER_TOP_RIGHT_Y);
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CASE(NS_CORNER_BOTTOM_RIGHT, PR_FALSE, NS_CORNER_BOTTOM_RIGHT_X);
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CASE(NS_CORNER_BOTTOM_RIGHT, PR_TRUE, NS_CORNER_BOTTOM_RIGHT_Y);
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CASE(NS_CORNER_BOTTOM_LEFT, PR_FALSE, NS_CORNER_BOTTOM_LEFT_X);
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CASE(NS_CORNER_BOTTOM_LEFT, PR_TRUE, NS_CORNER_BOTTOM_LEFT_Y);
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#undef CASE
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// Validation of NS_SIDE_TO_{FULL,HALF}_CORNER.
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#define CASE(side, second, result) \
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PR_STATIC_ASSERT(NS_SIDE_TO_FULL_CORNER(side, second) == result)
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CASE(NS_SIDE_TOP, PR_FALSE, NS_CORNER_TOP_LEFT);
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CASE(NS_SIDE_TOP, PR_TRUE, NS_CORNER_TOP_RIGHT);
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CASE(NS_SIDE_RIGHT, PR_FALSE, NS_CORNER_TOP_RIGHT);
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CASE(NS_SIDE_RIGHT, PR_TRUE, NS_CORNER_BOTTOM_RIGHT);
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CASE(NS_SIDE_BOTTOM, PR_FALSE, NS_CORNER_BOTTOM_RIGHT);
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CASE(NS_SIDE_BOTTOM, PR_TRUE, NS_CORNER_BOTTOM_LEFT);
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CASE(NS_SIDE_LEFT, PR_FALSE, NS_CORNER_BOTTOM_LEFT);
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CASE(NS_SIDE_LEFT, PR_TRUE, NS_CORNER_TOP_LEFT);
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#undef CASE
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#define CASE(side, second, parallel, result) \
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PR_STATIC_ASSERT(NS_SIDE_TO_HALF_CORNER(side, second, parallel) == result)
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CASE(NS_SIDE_TOP, PR_FALSE, PR_TRUE, NS_CORNER_TOP_LEFT_X);
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CASE(NS_SIDE_TOP, PR_FALSE, PR_FALSE, NS_CORNER_TOP_LEFT_Y);
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CASE(NS_SIDE_TOP, PR_TRUE, PR_TRUE, NS_CORNER_TOP_RIGHT_X);
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CASE(NS_SIDE_TOP, PR_TRUE, PR_FALSE, NS_CORNER_TOP_RIGHT_Y);
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CASE(NS_SIDE_RIGHT, PR_FALSE, PR_FALSE, NS_CORNER_TOP_RIGHT_X);
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CASE(NS_SIDE_RIGHT, PR_FALSE, PR_TRUE, NS_CORNER_TOP_RIGHT_Y);
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CASE(NS_SIDE_RIGHT, PR_TRUE, PR_FALSE, NS_CORNER_BOTTOM_RIGHT_X);
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CASE(NS_SIDE_RIGHT, PR_TRUE, PR_TRUE, NS_CORNER_BOTTOM_RIGHT_Y);
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CASE(NS_SIDE_BOTTOM, PR_FALSE, PR_TRUE, NS_CORNER_BOTTOM_RIGHT_X);
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CASE(NS_SIDE_BOTTOM, PR_FALSE, PR_FALSE, NS_CORNER_BOTTOM_RIGHT_Y);
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CASE(NS_SIDE_BOTTOM, PR_TRUE, PR_TRUE, NS_CORNER_BOTTOM_LEFT_X);
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CASE(NS_SIDE_BOTTOM, PR_TRUE, PR_FALSE, NS_CORNER_BOTTOM_LEFT_Y);
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CASE(NS_SIDE_LEFT, PR_FALSE, PR_FALSE, NS_CORNER_BOTTOM_LEFT_X);
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CASE(NS_SIDE_LEFT, PR_FALSE, PR_TRUE, NS_CORNER_BOTTOM_LEFT_Y);
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CASE(NS_SIDE_LEFT, PR_TRUE, PR_FALSE, NS_CORNER_TOP_LEFT_X);
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CASE(NS_SIDE_LEFT, PR_TRUE, PR_TRUE, NS_CORNER_TOP_LEFT_Y);
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#undef CASE
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