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https://gitlab.winehq.org/wine/wine-gecko.git
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1fb2634ff2
--HG-- rename : gfx/src/BaseMargin.h => gfx/2d/BaseMargin.h rename : gfx/src/BasePoint.h => gfx/2d/BasePoint.h rename : gfx/src/BaseRect.h => gfx/2d/BaseRect.h rename : gfx/src/BaseSize.h => gfx/2d/BaseSize.h
110 lines
3.7 KiB
C++
110 lines
3.7 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 Corporation code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Robert O'Callahan <robert@ocallahan.org>
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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 the GNU General Public License Version 2 or later (the "GPL"), or
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* 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 MOZILLA_GFX_BASEMARGIN_H_
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#define MOZILLA_GFX_BASEMARGIN_H_
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#include "Types.h"
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namespace mozilla {
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namespace gfx {
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/**
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* Do not use this class directly. Subclass it, pass that subclass as the
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* Sub parameter, and only use that subclass.
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*/
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template <class T, class Sub>
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struct BaseMargin {
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typedef mozilla::css::Side SideT;
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// Do not change the layout of these members; the Side() methods below
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// depend on this order.
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T top, right, bottom, left;
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// Constructors
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BaseMargin() : top(0), right(0), bottom(0), left(0) {}
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BaseMargin(T aLeft, T aTop, T aRight, T aBottom) :
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top(aTop), right(aRight), bottom(aBottom), left(aLeft) {}
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void SizeTo(T aLeft, T aTop, T aRight, T aBottom)
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{
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left = aLeft; top = aTop; right = aRight; bottom = aBottom;
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}
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T LeftRight() const { return left + right; }
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T TopBottom() const { return top + bottom; }
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T& Side(SideT aSide) {
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// This is ugly!
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return *(&top + aSide);
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}
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T Side(SideT aSide) const {
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// This is ugly!
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return *(&top + aSide);
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}
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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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bool operator==(const Sub& aMargin) const {
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return left == aMargin.left && top == aMargin.top &&
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right == aMargin.right && bottom == aMargin.bottom;
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}
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bool operator!=(const Sub& aMargin) const {
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return !(*this == aMargin);
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}
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Sub operator+(const Sub& aMargin) const {
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return Sub(left + aMargin.left, top + aMargin.top,
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right + aMargin.right, bottom + aMargin.bottom);
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}
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Sub operator-(const Sub& aMargin) const {
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return Sub(left - aMargin.left, top - aMargin.top,
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right - aMargin.right, bottom - aMargin.bottom);
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}
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Sub& operator+=(const Sub& aMargin) {
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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 *static_cast<Sub*>(this);
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}
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};
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}
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}
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#endif /* MOZILLA_GFX_BASEMARGIN_H_ */
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