1/* 2 * Copyright (C) 2013 The MathJax Consortium. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 14 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 15 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 16 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 17 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 19 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "RenderMathMLSpace.h" 28 29#if ENABLE(MATHML) 30 31#include "GraphicsContext.h" 32#include "MathMLNames.h" 33#include "PaintInfo.h" 34 35namespace WebCore { 36 37using namespace MathMLNames; 38 39RenderMathMLSpace::RenderMathMLSpace(MathMLTextElement& element, PassRef<RenderStyle> style) 40 : RenderMathMLBlock(element, WTF::move(style)) 41 , m_width(0) 42 , m_height(0) 43 , m_depth(0) 44{ 45} 46 47void RenderMathMLSpace::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const 48{ 49 minLogicalWidth = m_width; 50 maxLogicalWidth = m_width; 51} 52 53void RenderMathMLSpace::updateFromElement() 54{ 55 const auto& spaceElement = element(); 56 57 // This parses the mspace attributes, using 0 as the default values. 58 m_width = 0; 59 m_height = 0; 60 m_depth = 0; 61 parseMathMLLength(spaceElement.getAttribute(MathMLNames::widthAttr), m_width, &style()); 62 parseMathMLLength(spaceElement.getAttribute(MathMLNames::heightAttr), m_height, &style()); 63 parseMathMLLength(spaceElement.getAttribute(MathMLNames::depthAttr), m_depth, &style()); 64 65 // FIXME: Negative width values should be accepted. 66 if (m_width < 0) 67 m_width = 0; 68 69 // If the total height is negative, set vertical dimensions to 0. 70 if (m_height + m_depth < 0) { 71 m_height = 0; 72 m_depth = 0; 73 } 74 75 setNeedsLayoutAndPrefWidthsRecalc(); 76} 77 78void RenderMathMLSpace::updateLogicalWidth() 79{ 80 setLogicalWidth(m_width); 81} 82 83void RenderMathMLSpace::updateLogicalHeight() 84{ 85 setLogicalHeight(m_height + m_depth); 86} 87 88void RenderMathMLSpace::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) 89{ 90 RenderMathMLBlock::styleDidChange(diff, oldStyle); 91 updateFromElement(); 92} 93 94int RenderMathMLSpace::firstLineBaseline() const 95{ 96 return m_height; 97} 98 99} 100 101#endif 102