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124 lines
5.1 KiB
C
124 lines
5.1 KiB
C
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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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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*
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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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*
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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
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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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*
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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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* 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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* 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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* use your version of this file under the terms of the MPL, indicate your
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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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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef NSMARGIN_H
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#define NSMARGIN_H
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#include "nsCoord.h"
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#include "gfxCore.h"
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struct nsMargin {
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nscoord top, right, bottom, left;
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// Constructors
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nsMargin() {}
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nsMargin(const nsMargin& aMargin) {*this = aMargin;}
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nsMargin(nscoord aLeft, nscoord aTop,
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nscoord aRight, nscoord aBottom) {left = aLeft; top = aTop;
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right = aRight; bottom = aBottom;}
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void SizeTo(nscoord aLeft, nscoord aTop,
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nscoord aRight, nscoord aBottom) {left = aLeft; top = aTop;
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right = aRight; bottom = aBottom;}
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void SizeBy(nscoord aLeft, nscoord aTop,
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nscoord aRight, nscoord aBottom) {left += aLeft; top += aTop;
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right += aRight; bottom += aBottom;}
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nscoord LeftRight() const { return left + right; }
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nscoord TopBottom() const { return top + bottom; }
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#if (NS_SIDE_TOP == 0) && (NS_SIDE_RIGHT == 1) && (NS_SIDE_BOTTOM == 2) && (NS_SIDE_LEFT == 3)
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nscoord& side(PRUint8 aSide) {
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NS_PRECONDITION(aSide <= NS_SIDE_LEFT, "Out of range side");
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return *(&top + aSide);
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}
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nscoord side(PRUint8 aSide) const {
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NS_PRECONDITION(aSide <= NS_SIDE_LEFT, "Out of range side");
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return *(&top + aSide);
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}
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#else
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#error "Somebody changed the side constants."
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#endif
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// Overloaded operators. Note that '=' isn't defined so we'll get the
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// compiler generated default assignment operator
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PRBool operator==(const nsMargin& aMargin) const {
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return (PRBool) ((left == aMargin.left) && (top == aMargin.top) &&
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(right == aMargin.right) && (bottom == aMargin.bottom));
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}
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PRBool operator!=(const nsMargin& aMargin) const {
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return (PRBool) ((left != aMargin.left) || (top != aMargin.top) ||
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(right != aMargin.right) || (bottom != aMargin.bottom));
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}
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nsMargin operator+(const nsMargin& aMargin) const {
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return nsMargin(left + aMargin.left, top + aMargin.top,
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right + aMargin.right, bottom + aMargin.bottom);
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}
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nsMargin operator-(const nsMargin& aMargin) const {
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return nsMargin(left - aMargin.left, top - aMargin.top,
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right - aMargin.right, bottom - aMargin.bottom);
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}
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nsMargin& operator+=(const nsMargin& aMargin) {left += aMargin.left;
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top += aMargin.top;
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right += aMargin.right;
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bottom += aMargin.bottom;
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return *this;}
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nsMargin& operator-=(const nsMargin& aMargin) {left -= aMargin.left;
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top -= aMargin.top;
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right -= aMargin.right;
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bottom -= aMargin.bottom;
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return *this;}
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};
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#ifdef NS_COORD_IS_FLOAT
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struct nsIntMargin {
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PRInt32 top, right, bottom, left;
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// Constructors
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nsIntMargin() {}
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nsIntMargin(const nsIntMargin& aMargin) {*this = aMargin;}
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nsIntMargin(PRInt32 aLeft, PRInt32 aTop,
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PRInt32 aRight, PRInt32 aBottom) {left = aLeft; top = aTop;
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right = aRight; bottom = aBottom;}
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};
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#else
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typedef nsMargin nsIntMargin;
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#endif
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#endif /* NSMARGIN_H */
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