/* * Copyright (C) 2003, 2009 Apple Inc. All rights reserved. * * Portions are Copyright (C) 1998 Netscape Communications Corporation. * * Other contributors: * Robert O'Callahan <roc+@cs.cmu.edu> * David Baron <dbaron@fas.harvard.edu> * Christian Biesinger <cbiesinger@web.de> * Randall Jesup <rjesup@wgate.com> * Roland Mainz <roland.mainz@informatik.med.uni-giessen.de> * Josh Soref <timeless@mac.com> * Boris Zbarsky <bzbarsky@mit.edu> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Alternatively, the contents of this file may be used under the terms * of either the Mozilla Public License Version 1.1, found at * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html * (the "GPL"), in which case the provisions of the MPL or the GPL are * applicable instead of those above. If you wish to allow use of your * version of this file only under the terms of one of those two * licenses (the MPL or the GPL) and not to allow others to use your * version of this file under the LGPL, indicate your decision by * deletingthe provisions above and replace them with the notice and * other provisions required by the MPL or the GPL, as the case may be. * If you do not delete the provisions above, a recipient may use your * version of this file under any of the LGPL, the MPL or the GPL. */ #ifndef ScrollAlignment_h #define ScrollAlignment_h namespace WebCore { enum ScrollAlignmentBehavior { ScrollAlignmentNoScroll, ScrollAlignmentCenter, ScrollAlignmentTop, ScrollAlignmentBottom, ScrollAlignmentLeft, ScrollAlignmentRight, ScrollAlignmentClosestEdge }; class LayoutRect; struct ScrollAlignment { static ScrollAlignmentBehavior getVisibleBehavior(const ScrollAlignment& s) { return s.m_rectVisible; } static ScrollAlignmentBehavior getPartialBehavior(const ScrollAlignment& s) { return s.m_rectPartial; } static ScrollAlignmentBehavior getHiddenBehavior(const ScrollAlignment& s) { return s.m_rectHidden; } // FIXME: This function should probably go somewhere else but where? static LayoutRect getRectToExpose(const LayoutRect& visibleRect, const LayoutRect& exposeRect, const ScrollAlignment& alignX, const ScrollAlignment& alignY); static const ScrollAlignment alignCenterIfNeeded; static const ScrollAlignment alignToEdgeIfNeeded; static const ScrollAlignment alignCenterAlways; static const ScrollAlignment alignTopAlways; static const ScrollAlignment alignBottomAlways; ScrollAlignmentBehavior m_rectVisible; ScrollAlignmentBehavior m_rectHidden; ScrollAlignmentBehavior m_rectPartial; }; }; // namespace WebCore #endif // ScrollAlignment_h