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102 lines
3.8 KiB
C++
102 lines
3.8 KiB
C++
/*
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* Copyright (C) 2013 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "core/css/CSSToLengthConversionData.h"
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#include "core/rendering/RenderView.h"
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#include "core/rendering/style/RenderStyle.h"
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namespace blink {
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CSSToLengthConversionData::CSSToLengthConversionData(const RenderStyle* style, const RenderStyle* rootStyle, const RenderView* renderView, float zoom, bool computingFontSize)
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: m_style(style)
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, m_rootStyle(rootStyle)
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, m_viewportWidth(renderView ? renderView->layoutViewportWidth() : 0)
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, m_viewportHeight(renderView ? renderView->layoutViewportHeight() : 0)
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, m_zoom(zoom)
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, m_useEffectiveZoom(false)
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, m_computingFontSize(computingFontSize)
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{
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ASSERT(zoom > 0);
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}
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CSSToLengthConversionData::CSSToLengthConversionData(const RenderStyle* style, const RenderStyle* rootStyle, const RenderView* renderView, bool computingFontSize)
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: m_style(style)
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, m_rootStyle(rootStyle)
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, m_viewportWidth(renderView ? renderView->layoutViewportWidth() : 0)
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, m_viewportHeight(renderView ? renderView->layoutViewportHeight() : 0)
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, m_useEffectiveZoom(true)
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, m_computingFontSize(computingFontSize)
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{
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}
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CSSToLengthConversionData::CSSToLengthConversionData(const RenderStyle* style, const RenderStyle* rootStyle, float viewportWidth, float viewportHeight, float zoom, bool computingFontSize)
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: m_style(style)
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, m_rootStyle(rootStyle)
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, m_viewportWidth(viewportWidth)
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, m_viewportHeight(viewportHeight)
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, m_zoom(zoom)
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, m_useEffectiveZoom(false)
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, m_computingFontSize(computingFontSize)
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{
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ASSERT(zoom > 0);
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}
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float CSSToLengthConversionData::zoom() const
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{
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if (m_useEffectiveZoom)
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return m_style ? m_style->effectiveZoom() : 1;
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return m_zoom;
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}
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double CSSToLengthConversionData::viewportWidthPercent() const
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{
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m_style->setHasViewportUnits();
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return m_viewportWidth / 100;
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}
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double CSSToLengthConversionData::viewportHeightPercent() const
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{
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m_style->setHasViewportUnits();
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return m_viewportHeight / 100;
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}
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double CSSToLengthConversionData::viewportMinPercent() const
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{
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m_style->setHasViewportUnits();
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return std::min(m_viewportWidth, m_viewportHeight) / 100;
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}
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double CSSToLengthConversionData::viewportMaxPercent() const
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{
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m_style->setHasViewportUnits();
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return std::max(m_viewportWidth, m_viewportHeight) / 100;
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}
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} // namespace blink
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