| 1 | /*
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| 2 | * Copyright (C) 2013 Google Inc. All rights reserved.
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| 3 | *
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| 4 | * Redistribution and use in source and binary forms, with or without
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| 5 | * modification, are permitted provided that the following conditions are
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| 6 | * met:
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| 7 | *
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| 8 | * * Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * * Redistributions in binary form must reproduce the above
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| 11 | * copyright notice, this list of conditions and the following disclaimer
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| 12 | * in the documentation and/or other materials provided with the
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| 13 | * distribution.
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| 14 | * * Neither the name of Google Inc. nor the names of its
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| 15 | * contributors may be used to endorse or promote products derived from
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| 16 | * this software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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| 21 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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| 22 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 23 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 24 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 28 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 29 | */
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| 30 |
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| 31 | #include "config.h"
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| 32 | #include "CSSToLengthConversionData.h"
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| 33 |
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| 34 | #include "FloatSize.h"
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| 35 | #include "RenderStyle.h"
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| 36 | #include "RenderView.h"
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| 37 | #include "StyleBuilderState.h"
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| 38 |
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| 39 | namespace WebCore {
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| 40 |
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| 41 | CSSToLengthConversionData::CSSToLengthConversionData(const RenderStyle& style, const Style::BuilderContext& builderContext)
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| 42 | : m_style(&style)
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| 43 | , m_rootStyle(builderContext.rootElementStyle)
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| 44 | , m_parentStyle(&builderContext.parentStyle)
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| 45 | , m_renderView(builderContext.document->renderView())
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| 46 | , m_elementForContainerUnitResolution(builderContext.element)
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| 47 | , m_viewportDependencyDetectionStyle(const_cast<RenderStyle*>(m_style))
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| 48 | {
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| 49 | }
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| 50 |
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| 51 | CSSToLengthConversionData::CSSToLengthConversionData(const RenderStyle& style, const RenderStyle* rootStyle, const RenderStyle* parentStyle, const RenderView* renderView, const Element* elementForContainerUnitResolution)
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| 52 | : m_style(&style)
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| 53 | , m_rootStyle(rootStyle)
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| 54 | , m_parentStyle(parentStyle)
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| 55 | , m_renderView(renderView)
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| 56 | , m_elementForContainerUnitResolution(elementForContainerUnitResolution)
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| 57 | , m_zoom(1.f)
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| 58 | , m_viewportDependencyDetectionStyle(const_cast<RenderStyle*>(m_style))
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| 59 | {
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| 60 | }
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| 61 |
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| 62 | float CSSToLengthConversionData::zoom() const
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| 63 | {
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| 64 | return m_zoom.value_or(m_style ? m_style->effectiveZoom() : 1.f);
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| 65 | }
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| 66 |
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| 67 | FloatSize CSSToLengthConversionData::defaultViewportFactor() const
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| 68 | {
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| 69 | if (m_viewportDependencyDetectionStyle)
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| 70 | m_viewportDependencyDetectionStyle->setUsesViewportUnits();
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| 71 |
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| 72 | if (!m_renderView)
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| 73 | return { };
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| 74 |
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| 75 | return m_renderView->sizeForCSSDefaultViewportUnits() / 100.0;
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| 76 | }
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| 77 |
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| 78 | FloatSize CSSToLengthConversionData::smallViewportFactor() const
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| 79 | {
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| 80 | if (m_viewportDependencyDetectionStyle)
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| 81 | m_viewportDependencyDetectionStyle->setUsesViewportUnits();
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| 82 |
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| 83 | if (!m_renderView)
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| 84 | return { };
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| 85 |
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| 86 | return m_renderView->sizeForCSSSmallViewportUnits() / 100.0;
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| 87 | }
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| 88 |
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| 89 | FloatSize CSSToLengthConversionData::largeViewportFactor() const
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| 90 | {
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| 91 | if (m_viewportDependencyDetectionStyle)
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| 92 | m_viewportDependencyDetectionStyle->setUsesViewportUnits();
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| 93 |
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| 94 | if (!m_renderView)
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| 95 | return { };
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| 96 |
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| 97 | return m_renderView->sizeForCSSLargeViewportUnits() / 100.0;
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| 98 | }
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| 99 |
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| 100 | FloatSize CSSToLengthConversionData::dynamicViewportFactor() const
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| 101 | {
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| 102 | if (m_viewportDependencyDetectionStyle)
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| 103 | m_viewportDependencyDetectionStyle->setUsesViewportUnits();
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| 104 |
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| 105 | if (!m_renderView)
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| 106 | return { };
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| 107 |
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| 108 | return m_renderView->sizeForCSSDynamicViewportUnits() / 100.0;
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| 109 | }
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| 110 |
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| 111 | void CSSToLengthConversionData::setUsesContainerUnits() const
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| 112 | {
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| 113 | if (m_viewportDependencyDetectionStyle)
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| 114 | m_viewportDependencyDetectionStyle->setUsesContainerUnits();
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| 115 | }
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| 116 |
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| 117 | } // namespace WebCore
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