From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- layout/style/ServoCSSParser.h | 152 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 152 insertions(+) create mode 100644 layout/style/ServoCSSParser.h (limited to 'layout/style/ServoCSSParser.h') diff --git a/layout/style/ServoCSSParser.h b/layout/style/ServoCSSParser.h new file mode 100644 index 0000000000..5f9ea2f58e --- /dev/null +++ b/layout/style/ServoCSSParser.h @@ -0,0 +1,152 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* CSS parsing utility functions */ + +#ifndef mozilla_ServoCSSParser_h +#define mozilla_ServoCSSParser_h + +#include "mozilla/AlreadyAddRefed.h" +#include "mozilla/gfx/Matrix.h" +#include "mozilla/ServoTypes.h" +#include "nsColor.h" +#include "nsCSSPropertyID.h" +#include "nsDOMCSSDeclaration.h" +#include "nsStringFwd.h" + +struct nsCSSRect; +template +class RefPtr; + +namespace mozilla { + +class ServoStyleSet; +struct URLExtraData; +struct StyleFontFamilyList; +struct StyleFontStretch; +struct StyleFontWeight; +struct StyleFontStyle; +struct StyleLockedDeclarationBlock; +union StyleComputedFontStyleDescriptor; + +template +struct StyleTimingFunction; +struct StylePiecewiseLinearFunction; +using StyleComputedTimingFunction = + StyleTimingFunction; + +namespace css { +class Loader; +} + +namespace dom { +class Document; +} + +class ServoCSSParser { + public: + using ParsingEnvironment = nsDOMCSSDeclaration::ParsingEnvironment; + + /** + * Returns whether the specified string can be parsed as a valid CSS + * value. + * + * This includes Mozilla-specific keywords such as -moz-default-color. + */ + static bool IsValidCSSColor(const nsACString& aValue); + + /** + * Computes an nscolor from the given CSS value. + * + * @param aStyleSet The style set whose nsPresContext will be used to + * compute system colors and other special color values. + * @param aCurrentColor The color value that currentcolor should compute to. + * @param aValue The CSS value. + * @param aResultColor The resulting computed color value. + * @param aWasCurrentColor Whether aValue was currentcolor. Can be nullptr + * if the caller doesn't care. + * @param aLoader The CSS loader for document we're parsing a color for, + * so that parse errors can be reported to the console. If nullptr, errors + * won't be reported to the console. + * @return Whether aValue was successfully parsed and aResultColor was set. + */ + static bool ComputeColor(ServoStyleSet* aStyleSet, nscolor aCurrentColor, + const nsACString& aValue, nscolor* aResultColor, + bool* aWasCurrentColor = nullptr, + css::Loader* aLoader = nullptr); + + /** + * Parse a string representing a CSS property value into a + * StyleLockedDeclarationBlock. + * + * @param aProperty The property to be parsed. + * @param aValue The specified value. + * @param aParsingEnvironment All the parsing environment data we need. + * @param aParsingMode The paring mode we apply. + * @return The parsed value as a StyleLockedDeclarationBlock. We put the value + * in a declaration block since that is how we represent specified values + * in Servo. + */ + static already_AddRefed ParseProperty( + nsCSSPropertyID aProperty, const nsACString& aValue, + const ParsingEnvironment& aParsingEnvironment, + ParsingMode aParsingMode = ParsingMode::Default); + + /** + * Parse a animation timing function. + * + * @param aValue The specified value. + * @param aResult The output timing function. (output) + * @return Whether the value was successfully parsed. + */ + static bool ParseEasing(const nsACString& aValue, + StyleComputedTimingFunction& aResult); + + /** + * Parse a specified transform list into a gfx matrix. + * + * @param aValue The specified value. + * @param aContains3DTransform The output flag indicates whether this is any + * 3d transform function. (output) + * @param aResult The output matrix. (output) + * @return Whether the value was successfully parsed. + */ + static bool ParseTransformIntoMatrix(const nsACString& aValue, + bool& aContains3DTransform, + gfx::Matrix4x4& aResult); + + /** + * Parse a font shorthand for FontFaceSet matching, so we only care about + * FontFamily, FontStyle, FontStretch, and FontWeight. + * + * @param aValue The specified value. + * @param aUrl The parser url extra data. + * @param aList The parsed FontFamily list. (output) + * @param aStyle The parsed FontStyle. (output) + * @param aStretch The parsed FontStretch. (output) + * @param aWeight The parsed FontWeight. (output) + * @param aSize If non-null, returns the parsed font size. (output) + * @return Whether the value was successfully parsed. + */ + static bool ParseFontShorthandForMatching( + const nsACString& aValue, URLExtraData* aUrl, StyleFontFamilyList& aList, + StyleFontStyle& aStyle, StyleFontStretch& aStretch, + StyleFontWeight& aWeight, float* aSize = nullptr); + + /** + * Get a URLExtraData from a document. + */ + static already_AddRefed GetURLExtraData(dom::Document*); + + /** + * Get a ParsingEnvironment from a document. + */ + static ParsingEnvironment GetParsingEnvironment(dom::Document*); +}; + +} // namespace mozilla + +#endif // mozilla_ServoCSSParser_h -- cgit v1.2.3