15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2010 Apple Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * are met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1. Redistributions of source code must retain the above copyright 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above copyright 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer in the 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * documentation and/or other materials provided with the distribution. 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THE POSSIBILITY OF SUCH DAMAGE. 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef VerticalPositionCache_h 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define VerticalPositionCache_h 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/platform/graphics/FontBaseline.h" 3002772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch#include "wtf/HashMap.h" 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WebCore { 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class RenderObject; 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)// Values for vertical alignment. 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)const int PositionUndefined = 0x80000000; 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class VerticalPositionCache { 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) WTF_MAKE_NONCOPYABLE(VerticalPositionCache); 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public: 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) VerticalPositionCache() 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { } 4402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int get(RenderObject* renderer, FontBaseline baselineType) const 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) const HashMap<RenderObject*, int>& mapToCheck = baselineType == AlphabeticBaseline ? m_alphabeticPositions : m_ideographicPositions; 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) const HashMap<RenderObject*, int>::const_iterator it = mapToCheck.find(renderer); 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (it == mapToCheck.end()) 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return PositionUndefined; 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return it->value; 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 5302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void set(RenderObject* renderer, FontBaseline baselineType, int position) 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (baselineType == AlphabeticBaseline) 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_alphabeticPositions.set(renderer, position); 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) else 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ideographicPositions.set(renderer, position); 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)private: 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) HashMap<RenderObject*, int> m_alphabeticPositions; 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) HashMap<RenderObject*, int> m_ideographicPositions; 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} // namespace WebCore 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // VerticalPositionCache_h 70