1 /* 2 * Copyright (C) 2013 Google Inc. 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef CSSToLengthConversionData_h 32 #define CSSToLengthConversionData_h 33 34 #include "wtf/Assertions.h" 35 #include "wtf/Noncopyable.h" 36 37 namespace blink { 38 39 class RenderStyle; 40 class RenderView; 41 42 class CSSToLengthConversionData { 43 public: 44 CSSToLengthConversionData(const RenderStyle* currStyle, const RenderStyle* rootStyle, const RenderView*, float zoom, bool computingFontSize = false); 45 CSSToLengthConversionData(const RenderStyle* currStyle, const RenderStyle* rootStyle, const RenderView*, bool computingFontSize = false); 46 CSSToLengthConversionData(const RenderStyle* currStyle, const RenderStyle* rootStyle, float viewportWidth, float viewportHeight, float zoom, bool computingFontSize = false); 47 48 const RenderStyle& style() const { return *m_style; } 49 const RenderStyle* rootStyle() const { return m_rootStyle; } 50 float zoom() const; 51 bool computingFontSize() const { return m_computingFontSize; } 52 53 // Accessing these marks the style as having viewport units 54 double viewportWidthPercent() const; 55 double viewportHeightPercent() const; 56 double viewportMinPercent() const; 57 double viewportMaxPercent() const; 58 59 void setStyle(const RenderStyle* style) { m_style = style; } 60 void setRootStyle(const RenderStyle* rootStyle) { m_rootStyle = rootStyle; } 61 62 CSSToLengthConversionData copyWithAdjustedZoom(float newZoom) const 63 { 64 return CSSToLengthConversionData(m_style, m_rootStyle, m_viewportWidth, m_viewportHeight, newZoom, m_computingFontSize); 65 } 66 67 private: 68 const RenderStyle* m_style; 69 const RenderStyle* m_rootStyle; 70 float m_viewportWidth; 71 float m_viewportHeight; 72 float m_zoom; 73 bool m_useEffectiveZoom; 74 bool m_computingFontSize; 75 }; 76 77 } // namespace blink 78 79 #endif 80
