| /* |
| * CSS Media Query Evaluator |
| * |
| * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>. |
| * 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 THE AUTHOR ``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 |
| * 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. |
| */ |
| |
| #include "config.h" |
| #include "MediaQueryEvaluator.h" |
| |
| #include "CSSAspectRatioValue.h" |
| #include "CSSPrimitiveValue.h" |
| #include "CSSToLengthConversionData.h" |
| #include "CSSValueKeywords.h" |
| #include "CSSValueList.h" |
| #include "FloatRect.h" |
| #include "FrameView.h" |
| #include "IntRect.h" |
| #include "MainFrame.h" |
| #include "MediaFeatureNames.h" |
| #include "MediaList.h" |
| #include "MediaQuery.h" |
| #include "NodeRenderStyle.h" |
| #include "Page.h" |
| #include "PlatformScreen.h" |
| #include "RenderStyle.h" |
| #include "RenderView.h" |
| #include "Screen.h" |
| #include "Settings.h" |
| #include "StyleResolver.h" |
| #include <wtf/HashMap.h> |
| |
| #if ENABLE(3D_TRANSFORMS) |
| #include "RenderLayerCompositor.h" |
| #endif |
| |
| namespace WebCore { |
| |
| enum MediaFeaturePrefix { MinPrefix, MaxPrefix, NoPrefix }; |
| |
| typedef bool (*MediaQueryFunction)(CSSValue*, const CSSToLengthConversionData&, Frame&, MediaFeaturePrefix); |
| typedef HashMap<AtomicStringImpl*, MediaQueryFunction> MediaQueryFunctionMap; |
| |
| static bool isViewportDependent(const AtomicString& mediaFeature) |
| { |
| return mediaFeature == MediaFeatureNames::width |
| || mediaFeature == MediaFeatureNames::height |
| || mediaFeature == MediaFeatureNames::minWidth |
| || mediaFeature == MediaFeatureNames::minHeight |
| || mediaFeature == MediaFeatureNames::maxWidth |
| || mediaFeature == MediaFeatureNames::maxHeight |
| || mediaFeature == MediaFeatureNames::orientation |
| || mediaFeature == MediaFeatureNames::aspectRatio |
| || mediaFeature == MediaFeatureNames::minAspectRatio |
| || mediaFeature == MediaFeatureNames::maxAspectRatio; |
| } |
| |
| MediaQueryEvaluator::MediaQueryEvaluator(bool mediaFeatureResult) |
| : m_fallbackResult(mediaFeatureResult) |
| { |
| } |
| |
| MediaQueryEvaluator::MediaQueryEvaluator(const String& acceptedMediaType, bool mediaFeatureResult) |
| : m_mediaType(acceptedMediaType) |
| , m_fallbackResult(mediaFeatureResult) |
| { |
| } |
| |
| MediaQueryEvaluator::MediaQueryEvaluator(const String& acceptedMediaType, const Document& document, const RenderStyle* style) |
| : m_mediaType(acceptedMediaType) |
| , m_frame(document.frame()) |
| , m_style(style) |
| { |
| } |
| |
| bool MediaQueryEvaluator::mediaTypeMatch(const String& mediaTypeToMatch) const |
| { |
| return mediaTypeToMatch.isEmpty() |
| || equalLettersIgnoringASCIICase(mediaTypeToMatch, "all") |
| || equalIgnoringASCIICase(mediaTypeToMatch, m_mediaType); |
| } |
| |
| bool MediaQueryEvaluator::mediaTypeMatchSpecific(const char* mediaTypeToMatch) const |
| { |
| // Like mediaTypeMatch, but without the special cases for "" and "all". |
| ASSERT(mediaTypeToMatch); |
| ASSERT(mediaTypeToMatch[0] != '\0'); |
| ASSERT(!equalLettersIgnoringASCIICase(StringView(mediaTypeToMatch), "all")); |
| return equalIgnoringASCIICase(m_mediaType, mediaTypeToMatch); |
| } |
| |
| static bool applyRestrictor(MediaQuery::Restrictor r, bool value) |
| { |
| return r == MediaQuery::Not ? !value : value; |
| } |
| |
| bool MediaQueryEvaluator::evaluate(const MediaQuerySet& querySet, StyleResolver* styleResolver) const |
| { |
| auto& queries = querySet.queryVector(); |
| if (!queries.size()) |
| return true; // empty query list evaluates to true |
| |
| // iterate over queries, stop if any of them eval to true (OR semantics) |
| bool result = false; |
| for (size_t i = 0; i < queries.size() && !result; ++i) { |
| auto& query = queries[i]; |
| |
| if (query.ignored() || (!query.expressions().size() && query.mediaType().isEmpty())) |
| continue; |
| |
| if (mediaTypeMatch(query.mediaType())) { |
| auto& expressions = query.expressions(); |
| // iterate through expressions, stop if any of them eval to false (AND semantics) |
| size_t j = 0; |
| for (; j < expressions.size(); ++j) { |
| bool expressionResult = evaluate(expressions[j]); |
| if (styleResolver && isViewportDependent(expressions[j].mediaFeature())) |
| styleResolver->addViewportDependentMediaQueryResult(expressions[j], expressionResult); |
| if (!expressionResult) |
| break; |
| } |
| |
| // assume true if we are at the end of the list, |
| // otherwise assume false |
| result = applyRestrictor(query.restrictor(), expressions.size() == j); |
| } else |
| result = applyRestrictor(query.restrictor(), false); |
| } |
| |
| return result; |
| } |
| |
| bool MediaQueryEvaluator::evaluate(const MediaQuerySet& querySet, Vector<MediaQueryResult>& results) const |
| { |
| auto& queries = querySet.queryVector(); |
| if (!queries.size()) |
| return true; |
| |
| bool result = false; |
| for (size_t i = 0; i < queries.size() && !result; ++i) { |
| auto& query = queries[i]; |
| |
| if (query.ignored()) |
| continue; |
| |
| if (mediaTypeMatch(query.mediaType())) { |
| auto& expressions = query.expressions(); |
| size_t j = 0; |
| for (; j < expressions.size(); ++j) { |
| bool expressionResult = evaluate(expressions[j]); |
| if (isViewportDependent(expressions[j].mediaFeature())) |
| results.append({ expressions[j], expressionResult }); |
| if (!expressionResult) |
| break; |
| } |
| result = applyRestrictor(query.restrictor(), expressions.size() == j); |
| } else |
| result = applyRestrictor(query.restrictor(), false); |
| } |
| |
| return result; |
| } |
| |
| template<typename T, typename U> bool compareValue(T a, U b, MediaFeaturePrefix op) |
| { |
| switch (op) { |
| case MinPrefix: |
| return a >= b; |
| case MaxPrefix: |
| return a <= b; |
| case NoPrefix: |
| return a == b; |
| } |
| return false; |
| } |
| |
| static bool compareAspectRatioValue(CSSValue* value, int width, int height, MediaFeaturePrefix op) |
| { |
| if (!is<CSSAspectRatioValue>(value)) |
| return false; |
| auto& aspectRatio = downcast<CSSAspectRatioValue>(*value); |
| return compareValue(width * aspectRatio.denominatorValue(), height * aspectRatio.numeratorValue(), op); |
| } |
| |
| static Optional<double> doubleValue(CSSValue* value) |
| { |
| if (!is<CSSPrimitiveValue>(value) || !downcast<CSSPrimitiveValue>(*value).isNumber()) |
| return Nullopt; |
| return downcast<CSSPrimitiveValue>(*value).getDoubleValue(CSSPrimitiveValue::CSS_NUMBER); |
| } |
| |
| static bool zeroEvaluate(CSSValue* value, MediaFeaturePrefix op) |
| { |
| auto numericValue = doubleValue(value); |
| return numericValue && compareValue(0, numericValue.value(), op); |
| } |
| |
| static bool oneEvaluate(CSSValue* value, MediaFeaturePrefix op) |
| { |
| if (!value) |
| return true; |
| auto numericValue = doubleValue(value); |
| return numericValue && compareValue(1, numericValue.value(), op); |
| } |
| |
| static bool colorEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame& frame, MediaFeaturePrefix op) |
| { |
| int bitsPerComponent = screenDepthPerComponent(frame.mainFrame().view()); |
| auto numericValue = doubleValue(value); |
| if (!numericValue) |
| return bitsPerComponent; |
| return compareValue(bitsPerComponent, numericValue.value(), op); |
| } |
| |
| static bool colorIndexEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame&, MediaFeaturePrefix op) |
| { |
| // Always return false for indexed display. |
| return zeroEvaluate(value, op); |
| } |
| |
| static bool colorGamutEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame& frame, MediaFeaturePrefix) |
| { |
| if (!value) |
| return true; |
| |
| switch (downcast<CSSPrimitiveValue>(*value).getValueID()) { |
| case CSSValueSrgb: |
| return true; |
| case CSSValueP3: |
| // FIXME: For the moment we just assume any "extended color" display is at least as good as P3. |
| return screenSupportsExtendedColor(frame.mainFrame().view()); |
| case CSSValueRec2020: |
| // FIXME: At some point we should start detecting displays that support more colors. |
| return false; |
| default: |
| ASSERT_NOT_REACHED(); |
| return true; |
| } |
| } |
| |
| static bool monochromeEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix op) |
| { |
| if (!screenIsMonochrome(frame.mainFrame().view())) |
| return zeroEvaluate(value, op); |
| return colorEvaluate(value, conversionData, frame, op); |
| } |
| |
| static bool invertedColorsEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame&, MediaFeaturePrefix) |
| { |
| bool isInverted = screenHasInvertedColors(); |
| if (!value) |
| return isInverted; |
| return downcast<CSSPrimitiveValue>(*value).getValueID() == (isInverted ? CSSValueInverted : CSSValueNone); |
| } |
| |
| static bool orientationEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame& frame, MediaFeaturePrefix) |
| { |
| FrameView* view = frame.view(); |
| if (!view) |
| return false; |
| |
| auto width = view->layoutWidth(); |
| auto height = view->layoutHeight(); |
| |
| if (!is<CSSPrimitiveValue>(value)) { |
| // Expression (orientation) evaluates to true if width and height >= 0. |
| return height >= 0 && width >= 0; |
| } |
| |
| auto keyword = downcast<CSSPrimitiveValue>(*value).getValueID(); |
| if (width > height) // Square viewport is portrait. |
| return keyword == CSSValueLandscape; |
| return keyword == CSSValuePortrait; |
| } |
| |
| static bool aspectRatioEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame& frame, MediaFeaturePrefix op) |
| { |
| // ({,min-,max-}aspect-ratio) |
| // assume if we have a device, its aspect ratio is non-zero |
| if (!value) |
| return true; |
| |
| FrameView* view = frame.view(); |
| if (!view) |
| return true; |
| |
| return compareAspectRatioValue(value, view->layoutWidth(), view->layoutHeight(), op); |
| } |
| |
| static bool deviceAspectRatioEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame& frame, MediaFeaturePrefix op) |
| { |
| // ({,min-,max-}device-aspect-ratio) |
| // assume if we have a device, its aspect ratio is non-zero |
| if (!value) |
| return true; |
| |
| auto size = screenRect(frame.mainFrame().view()).size(); |
| return compareAspectRatioValue(value, size.width(), size.height(), op); |
| } |
| |
| static bool evaluateResolution(CSSValue* value, Frame& frame, MediaFeaturePrefix op) |
| { |
| // FIXME: Possible handle other media types than 'screen' and 'print'. |
| FrameView* view = frame.view(); |
| if (!view) |
| return false; |
| |
| float deviceScaleFactor = 0; |
| |
| // This checks the actual media type applied to the document, and we know |
| // this method only got called if this media type matches the one defined |
| // in the query. Thus, if if the document's media type is "print", the |
| // media type of the query will either be "print" or "all". |
| String mediaType = view->mediaType(); |
| if (equalLettersIgnoringASCIICase(mediaType, "screen")) |
| deviceScaleFactor = frame.page() ? frame.page()->deviceScaleFactor() : 1; |
| else if (equalLettersIgnoringASCIICase(mediaType, "print")) { |
| // The resolution of images while printing should not depend on the dpi |
| // of the screen. Until we support proper ways of querying this info |
| // we use 300px which is considered minimum for current printers. |
| deviceScaleFactor = 3.125; // 300dpi / 96dpi; |
| } |
| |
| if (!value) |
| return !!deviceScaleFactor; |
| |
| if (!is<CSSPrimitiveValue>(value)) |
| return false; |
| |
| auto& resolution = downcast<CSSPrimitiveValue>(*value); |
| return compareValue(deviceScaleFactor, resolution.isNumber() ? resolution.getFloatValue() : resolution.getFloatValue(CSSPrimitiveValue::CSS_DPPX), op); |
| } |
| |
| static bool devicePixelRatioEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame& frame, MediaFeaturePrefix op) |
| { |
| return (!value || (is<CSSPrimitiveValue>(*value) && downcast<CSSPrimitiveValue>(*value).isNumber())) && evaluateResolution(value, frame, op); |
| } |
| |
| static bool resolutionEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame& frame, MediaFeaturePrefix op) |
| { |
| #if ENABLE(RESOLUTION_MEDIA_QUERY) |
| return (!value || (is<CSSPrimitiveValue>(*value) && downcast<CSSPrimitiveValue>(*value).isResolution())) && evaluateResolution(value, frame, op); |
| #else |
| UNUSED_PARAM(value); |
| UNUSED_PARAM(frame); |
| UNUSED_PARAM(op); |
| return false; |
| #endif |
| } |
| |
| static bool gridEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame&, MediaFeaturePrefix op) |
| { |
| return zeroEvaluate(value, op); |
| } |
| |
| static bool computeLength(CSSValue* value, bool strict, const CSSToLengthConversionData& conversionData, int& result) |
| { |
| if (!is<CSSPrimitiveValue>(value)) |
| return false; |
| |
| auto& primitiveValue = downcast<CSSPrimitiveValue>(*value); |
| |
| if (primitiveValue.isNumber()) { |
| result = primitiveValue.getIntValue(); |
| return !strict || !result; |
| } |
| |
| if (primitiveValue.isLength()) { |
| result = primitiveValue.computeLength<int>(conversionData); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static bool deviceHeightEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix op) |
| { |
| // ({,min-,max-}device-height) |
| // assume if we have a device, assume non-zero |
| if (!value) |
| return true; |
| int length; |
| auto height = screenRect(frame.mainFrame().view()).height(); |
| return computeLength(value, !frame.document()->inQuirksMode(), conversionData, length) && compareValue(height, length, op); |
| } |
| |
| static bool deviceWidthEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix op) |
| { |
| // ({,min-,max-}device-width) |
| // assume if we have a device, assume non-zero |
| if (!value) |
| return true; |
| int length; |
| auto width = screenRect(frame.mainFrame().view()).width(); |
| return computeLength(value, !frame.document()->inQuirksMode(), conversionData, length) && compareValue(width, length, op); |
| } |
| |
| static bool heightEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix op) |
| { |
| FrameView* view = frame.view(); |
| if (!view) |
| return false; |
| int height = view->layoutHeight(); |
| if (!value) |
| return height; |
| if (auto* renderView = frame.document()->renderView()) |
| height = adjustForAbsoluteZoom(height, *renderView); |
| int length; |
| return computeLength(value, !frame.document()->inQuirksMode(), conversionData, length) && compareValue(height, length, op); |
| } |
| |
| static bool widthEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix op) |
| { |
| FrameView* view = frame.view(); |
| if (!view) |
| return false; |
| int width = view->layoutWidth(); |
| if (!value) |
| return width; |
| if (auto* renderView = frame.document()->renderView()) |
| width = adjustForAbsoluteZoom(width, *renderView); |
| int length; |
| return computeLength(value, !frame.document()->inQuirksMode(), conversionData, length) && compareValue(width, length, op); |
| } |
| |
| static bool minColorEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return colorEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxColorEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return colorEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool minColorIndexEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return colorIndexEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxColorIndexEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return colorIndexEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool minMonochromeEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return monochromeEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxMonochromeEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return monochromeEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool minAspectRatioEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return aspectRatioEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxAspectRatioEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return aspectRatioEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool minDeviceAspectRatioEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return deviceAspectRatioEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxDeviceAspectRatioEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return deviceAspectRatioEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool minDevicePixelRatioEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return devicePixelRatioEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxDevicePixelRatioEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return devicePixelRatioEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool minHeightEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return heightEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxHeightEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return heightEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool minWidthEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return widthEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxWidthEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return widthEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool minDeviceHeightEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return deviceHeightEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxDeviceHeightEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return deviceHeightEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool minDeviceWidthEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return deviceWidthEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxDeviceWidthEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return deviceWidthEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool minResolutionEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return resolutionEvaluate(value, conversionData, frame, MinPrefix); |
| } |
| |
| static bool maxResolutionEvaluate(CSSValue* value, const CSSToLengthConversionData& conversionData, Frame& frame, MediaFeaturePrefix) |
| { |
| return resolutionEvaluate(value, conversionData, frame, MaxPrefix); |
| } |
| |
| static bool animationEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame&, MediaFeaturePrefix op) |
| { |
| return oneEvaluate(value, op); |
| } |
| |
| static bool transitionEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame&, MediaFeaturePrefix op) |
| { |
| return oneEvaluate(value, op); |
| } |
| |
| static bool transform2dEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame&, MediaFeaturePrefix op) |
| { |
| return oneEvaluate(value, op); |
| } |
| |
| static bool transform3dEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame& frame, MediaFeaturePrefix op) |
| { |
| #if ENABLE(3D_TRANSFORMS) |
| auto* view = frame.contentRenderer(); |
| return view && view->compositor().canRender3DTransforms() ? oneEvaluate(value, op) : zeroEvaluate(value, op); |
| #else |
| UNUSED_PARAM(frame); |
| return zeroEvaluate(value, op); |
| #endif |
| } |
| |
| #if ENABLE(VIEW_MODE_CSS_MEDIA) |
| |
| static bool viewModeEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame& frame, MediaFeaturePrefix) |
| { |
| if (!value) |
| return true; |
| |
| auto keyword = downcast<CSSPrimitiveValue>(*value).getValueID(); |
| |
| switch (frame.page()->viewMode()) { |
| case Page::ViewModeWindowed: |
| return keyword == CSSValueWindowed; |
| case Page::ViewModeFloating: |
| return keyword == CSSValueFloating; |
| case Page::ViewModeFullscreen: |
| return keyword == CSSValueFullscreen; |
| case Page::ViewModeMaximized: |
| return keyword == CSSValueMaximized; |
| case Page::ViewModeMinimized: |
| return keyword == CSSValueMinimized; |
| default: |
| break; |
| } |
| |
| return false; |
| } |
| |
| #endif // ENABLE(VIEW_MODE_CSS_MEDIA) |
| |
| static bool videoPlayableInlineEvaluate(CSSValue*, const CSSToLengthConversionData&, Frame& frame, MediaFeaturePrefix) |
| { |
| return frame.settings().allowsInlineMediaPlayback(); |
| } |
| |
| static bool hoverEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame&, MediaFeaturePrefix) |
| { |
| if (!is<CSSPrimitiveValue>(value)) { |
| #if ENABLE(TOUCH_EVENTS) |
| return false; |
| #else |
| return true; |
| #endif |
| } |
| |
| auto keyword = downcast<CSSPrimitiveValue>(*value).getValueID(); |
| #if ENABLE(TOUCH_EVENTS) |
| return keyword == CSSValueNone; |
| #else |
| return keyword == CSSValueHover; |
| #endif |
| } |
| |
| static bool anyHoverEvaluate(CSSValue* value, const CSSToLengthConversionData& cssToLengthConversionData, Frame& frame, MediaFeaturePrefix prefix) |
| { |
| return hoverEvaluate(value, cssToLengthConversionData, frame, prefix); |
| } |
| |
| static bool pointerEvaluate(CSSValue* value, const CSSToLengthConversionData&, Frame&, MediaFeaturePrefix) |
| { |
| if (!is<CSSPrimitiveValue>(value)) |
| return true; |
| |
| auto keyword = downcast<CSSPrimitiveValue>(*value).getValueID(); |
| #if ENABLE(TOUCH_EVENTS) |
| return keyword == CSSValueCoarse; |
| #else |
| return keyword == CSSValueFine; |
| #endif |
| } |
| |
| static bool anyPointerEvaluate(CSSValue* value, const CSSToLengthConversionData& cssToLengthConversionData, Frame& frame, MediaFeaturePrefix prefix) |
| { |
| return pointerEvaluate(value, cssToLengthConversionData, frame, prefix); |
| } |
| |
| // Use this function instead of calling add directly to avoid inlining. |
| static void add(MediaQueryFunctionMap& map, AtomicStringImpl* key, MediaQueryFunction value) |
| { |
| map.add(key, value); |
| } |
| |
| bool MediaQueryEvaluator::evaluate(const MediaQueryExpression& expression) const |
| { |
| if (!m_frame || !m_frame->view() || !m_style) |
| return m_fallbackResult; |
| |
| if (!expression.isValid()) |
| return false; |
| |
| static NeverDestroyed<MediaQueryFunctionMap> map = [] { |
| MediaQueryFunctionMap map; |
| #define ADD_TO_FUNCTIONMAP(name, str) add(map, MediaFeatureNames::name.impl(), name##Evaluate); |
| CSS_MEDIAQUERY_NAMES_FOR_EACH_MEDIAFEATURE(ADD_TO_FUNCTIONMAP); |
| #undef ADD_TO_FUNCTIONMAP |
| return map; |
| }(); |
| |
| auto function = map.get().get(expression.mediaFeature().impl()); |
| if (!function) |
| return false; |
| |
| Document& document = *m_frame->document(); |
| if (!document.documentElement()) |
| return false; |
| return function(expression.value(), { m_style, document.documentElement()->renderStyle(), document.renderView(), 1, false }, *m_frame, NoPrefix); |
| } |
| |
| } // namespace |