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