/* * Copyright (C) 2013 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef SimpleLineLayout_h #define SimpleLineLayout_h #include <wtf/Vector.h> #include <wtf/text/WTFString.h> #if COMPILER(MSVC) #pragma warning(push) #pragma warning(disable: 4200) // Disable "zero-sized array in struct/union" warning #endif namespace WebCore { class RenderBlockFlow; namespace SimpleLineLayout { bool canUseFor(const RenderBlockFlow&); struct Run { Run() { } Run(unsigned start, float left) : start(start) , end(start) , isEndOfLine(false) , left(left) , right(left) { } unsigned start; unsigned end : 31; unsigned isEndOfLine : 1; float left; float right; }; class Layout { WTF_MAKE_FAST_ALLOCATED; public: typedef Vector<Run, 10> RunVector; static std::unique_ptr<Layout> create(const RunVector&, unsigned lineCount); unsigned lineCount() const { return m_lineCount; } unsigned runCount() const { return m_runCount; } const Run& runAt(unsigned i) const { return m_runs[i]; } private: Layout(const RunVector&, unsigned lineCount); unsigned m_lineCount; unsigned m_runCount; Run m_runs[0]; }; std::unique_ptr<Layout> create(RenderBlockFlow&); } } #if COMPILER(MSVC) #pragma warning(pop) #endif #endif