khtml::MediaQueryEvaluator Class Reference

#include <css_mediaquery.h>

Public Member Functions
	MediaQueryEvaluator (bool mediaFeatureResult=false)
	MediaQueryEvaluator (const DOM::DOMString &acceptedMediaType, bool mediaFeatureResult=false)
	MediaQueryEvaluator (const char *acceptedMediaType, bool mediaFeatureResult=false)
	MediaQueryEvaluator (const DOM::DOMString &acceptedMediaType, KHTMLPart *, RenderStyle *)
bool	eval (const DOM::MediaListImpl *, CSSStyleSelector *=nullptr) const
bool	eval (const MediaQueryExp *) const
bool	mediaTypeMatch (const DOM::DOMString &mediaTypeToMatch) const
bool	mediaTypeMatchSpecific (const char *mediaTypeToMatch) const

Static Public Member Functions
static void	cleanup ()

Detailed Description

Class that evaluates css media queries as defined in CSS3 Module "Media Queries" (https://www.w3.org/TR/css3-mediaqueries/) Special constructors are needed, if simple media queries are to be evaluated without knowledge of the medium features.

This can happen for example when parsing UA stylesheets, if evaluation is done right after parsing.

the boolean parameter is used to approximate results of evaluation, if the device characteristics are not known. This can be used to prune the loading of stylesheets to only those which are probable to match.

Definition at line 98 of file css_mediaquery.h.

Constructor & Destructor Documentation

MediaQueryEvaluator::MediaQueryEvaluator

(

bool

mediaFeatureResult = false

)

Creates evaluator which evaluates only simple media queries Evaluator returns true for "all", and returns value of for any media features.

Definition at line 228 of file css_mediaquery.cpp.

MediaQueryEvaluator::MediaQueryEvaluator	(	const DOM::DOMString &	acceptedMediaType,
		bool	mediaFeatureResult = false
	)

Creates evaluator which evaluates only simple media queries Evaluator returns true for acceptedMediaType and returns value of for any media features.

Definition at line 235 of file css_mediaquery.cpp.

MediaQueryEvaluator::MediaQueryEvaluator	(	const DOM::DOMString &	acceptedMediaType,
		KHTMLPart *	part,
		RenderStyle *	style
	)

Creates evaluator which evaluates full media queries.

Definition at line 251 of file css_mediaquery.cpp.

Member Function Documentation

bool MediaQueryEvaluator::eval	(	const DOM::MediaListImpl *	mediaList,
		CSSStyleSelector *	styleSelector = nullptr
	)		const

Evaluates a list of media queries.

Definition at line 284 of file css_mediaquery.cpp.

bool MediaQueryEvaluator::eval

(

const MediaQueryExp *

expr

)

const

Evaluates media query subexpression, ie "and (media-feature: value)" part.

Definition at line 811 of file css_mediaquery.cpp.

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The documentation for this class was generated from the following files:

• css_mediaquery.h
• css_mediaquery.cpp