зеркало из https://github.com/mozilla/gecko-dev.git
154 строки
6.2 KiB
C
154 строки
6.2 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 NSMARGIN_H
|
|
#define NSMARGIN_H
|
|
|
|
#include "nsCoord.h"
|
|
#include "nsPoint.h"
|
|
#include "gfxCore.h"
|
|
|
|
struct nsMargin {
|
|
nscoord top, right, bottom, left;
|
|
|
|
// Constructors
|
|
nsMargin() {}
|
|
nsMargin(const nsMargin& aMargin) {*this = aMargin;}
|
|
nsMargin(nscoord aLeft, nscoord aTop,
|
|
nscoord aRight, nscoord aBottom) {left = aLeft; top = aTop;
|
|
right = aRight; bottom = aBottom;}
|
|
|
|
void SizeTo(nscoord aLeft, nscoord aTop,
|
|
nscoord aRight, nscoord aBottom) {left = aLeft; top = aTop;
|
|
right = aRight; bottom = aBottom;}
|
|
void SizeBy(nscoord aLeft, nscoord aTop,
|
|
nscoord aRight, nscoord aBottom) {left += aLeft; top += aTop;
|
|
right += aRight; bottom += aBottom;}
|
|
|
|
nscoord LeftRight() const { return left + right; }
|
|
nscoord TopBottom() const { return top + bottom; }
|
|
|
|
nsPoint TopLeft() const { return nsPoint(left, top); }
|
|
|
|
#if (NS_SIDE_TOP == 0) && (NS_SIDE_RIGHT == 1) && (NS_SIDE_BOTTOM == 2) && (NS_SIDE_LEFT == 3)
|
|
nscoord& side(PRUint8 aSide) {
|
|
NS_PRECONDITION(aSide <= NS_SIDE_LEFT, "Out of range side");
|
|
return *(&top + aSide);
|
|
}
|
|
|
|
nscoord side(PRUint8 aSide) const {
|
|
NS_PRECONDITION(aSide <= NS_SIDE_LEFT, "Out of range side");
|
|
return *(&top + aSide);
|
|
}
|
|
#else
|
|
#error "Somebody changed the side constants."
|
|
#endif
|
|
|
|
// Overloaded operators. Note that '=' isn't defined so we'll get the
|
|
// compiler generated default assignment operator
|
|
PRBool operator==(const nsMargin& aMargin) const {
|
|
return (PRBool) ((left == aMargin.left) && (top == aMargin.top) &&
|
|
(right == aMargin.right) && (bottom == aMargin.bottom));
|
|
}
|
|
PRBool operator!=(const nsMargin& aMargin) const {
|
|
return (PRBool) ((left != aMargin.left) || (top != aMargin.top) ||
|
|
(right != aMargin.right) || (bottom != aMargin.bottom));
|
|
}
|
|
nsMargin operator+(const nsMargin& aMargin) const {
|
|
return nsMargin(left + aMargin.left, top + aMargin.top,
|
|
right + aMargin.right, bottom + aMargin.bottom);
|
|
}
|
|
nsMargin operator-(const nsMargin& aMargin) const {
|
|
return nsMargin(left - aMargin.left, top - aMargin.top,
|
|
right - aMargin.right, bottom - aMargin.bottom);
|
|
}
|
|
nsMargin& operator+=(const nsMargin& aMargin) {left += aMargin.left;
|
|
top += aMargin.top;
|
|
right += aMargin.right;
|
|
bottom += aMargin.bottom;
|
|
return *this;}
|
|
nsMargin& operator-=(const nsMargin& aMargin) {left -= aMargin.left;
|
|
top -= aMargin.top;
|
|
right -= aMargin.right;
|
|
bottom -= aMargin.bottom;
|
|
return *this;}
|
|
|
|
PRBool IsZero() { return !left && !top && !right && !bottom; }
|
|
};
|
|
|
|
struct nsIntMargin {
|
|
PRInt32 top, right, bottom, left;
|
|
|
|
// Constructors
|
|
nsIntMargin() {}
|
|
nsIntMargin(const nsIntMargin& aMargin) {*this = aMargin;}
|
|
nsIntMargin(PRInt32 aLeft, PRInt32 aTop,
|
|
PRInt32 aRight, PRInt32 aBottom) {left = aLeft; top = aTop;
|
|
right = aRight; bottom = aBottom;}
|
|
void SizeTo(PRInt32 aLeft, PRInt32 aTop,
|
|
PRInt32 aRight, PRInt32 aBottom) {left = aLeft; top = aTop;
|
|
right = aRight; bottom = aBottom;}
|
|
|
|
PRInt32 LeftRight() const { return left + right; }
|
|
PRInt32 TopBottom() const { return top + bottom; }
|
|
|
|
nsPoint TopLeft() const { return nsPoint(left, top); }
|
|
|
|
PRInt32& side(PRUint8 aSide) {
|
|
NS_PRECONDITION(aSide <= NS_SIDE_LEFT, "Out of range side");
|
|
return *(&top + aSide);
|
|
}
|
|
|
|
PRInt32 side(PRUint8 aSide) const {
|
|
NS_PRECONDITION(aSide <= NS_SIDE_LEFT, "Out of range side");
|
|
return *(&top + aSide);
|
|
}
|
|
|
|
PRBool operator!=(const nsIntMargin& aMargin) const {
|
|
return (PRBool) ((left != aMargin.left) || (top != aMargin.top) ||
|
|
(right != aMargin.right) || (bottom != aMargin.bottom));
|
|
}
|
|
nsIntMargin operator+(const nsIntMargin& aMargin) const {
|
|
return nsIntMargin(left + aMargin.left, top + aMargin.top,
|
|
right + aMargin.right, bottom + aMargin.bottom);
|
|
}
|
|
|
|
PRBool IsZero() { return !left && !top && !right && !bottom; }
|
|
};
|
|
|
|
#endif /* NSMARGIN_H */
|