CSSJanus Class Reference

This is a PHP port of CSSJanus, a utility that transforms CSS style sheets written for LTR to RTL. More...

List of all members.

Static Public Member Functions
static	transform ($css, $swapLtrRtlInURL=false, $swapLeftRightInURL=false)
	Transform an LTR stylesheet to RTL.
Static Private Member Functions
static	buildPatterns ()
	Build patterns we can't define above because they depend on other patterns.
static	calculateNewBackgroundPosition ($matches)
	Callback for calculateNewBackgroundPosition()
static	fixBackgroundPosition ($css)
	Flip horizontal background percentages.
static	fixBorderRadius ($css)
	Swaps appropriate corners in four-part border-radius rules.
static	fixCursorProperties ($css)
	Flip East and West in rules like cursor: nw-resize;.
static	fixDirection ($css)
	Replace direction: ltr; with direction: rtl; and vice versa.
static	fixFourPartNotation ($css)
	Swap the second and fourth parts in four-part notation rules like padding: 1px 2px 3px 4px;.
static	fixLeftAndRight ($css)
	Flip rules like left: , padding-right: , etc.
static	fixLeftRightInURL ($css)
	Replace 'left' with 'right' and vice versa in background URLs.
static	fixLtrRtlInURL ($css)
	Replace 'ltr' with 'rtl' and vice versa in background URLs.
static	fixShadows ($css)
	Negates horizontal offset in box-shadow and text-shadow rules.
Static Private Attributes
static	$patterns

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Detailed Description

This is a PHP port of CSSJanus, a utility that transforms CSS style sheets written for LTR to RTL.

The original Python version of CSSJanus is Copyright 2008 by Google Inc. and is distributed under the Apache license. This PHP port is Copyright 2010 by Roan Kattouw and is dual-licensed under the GPL (as in the comment above) and the Apache (as in the original code) licenses.

Original code: http://code.google.com/p/cssjanus/source/browse/trunk/cssjanus.py License of original code: http://code.google.com/p/cssjanus/source/browse/trunk/LICENSE

Author:

Roan Kattouw

Definition at line 37 of file CSSJanus.php.

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Member Function Documentation

static CSSJanus::buildPatterns

(

)

[static, private]

Build patterns we can't define above because they depend on other patterns.

Definition at line 90 of file CSSJanus.php.

References $patterns.

Referenced by transform().

static CSSJanus::calculateNewBackgroundPosition

(

$

matches

)

[static, private]

Callback for calculateNewBackgroundPosition()

Parameters:

$matches

array

Returns:

string

Definition at line 352 of file CSSJanus.php.

References $matches.

static CSSJanus::fixBackgroundPosition

(

$

css

)

[static, private]

Flip horizontal background percentages.

Parameters:

$css

string

Returns:

string

Definition at line 331 of file CSSJanus.php.

References $css, and array().

Referenced by transform().

static CSSJanus::fixBorderRadius

(

$

css

)

[static, private]

Swaps appropriate corners in four-part border-radius rules.

Needs to undo the effect of fixFourPartNotation() on those rules, too.

Parameters:

$css

string

Returns:

string

Definition at line 282 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixCursorProperties

(

$

css

)

[static, private]

Flip East and West in rules like cursor: nw-resize;.

Parameters:

$css

string

Returns:

string

Definition at line 248 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixDirection

(

$

css

)

[static, private]

Replace direction: ltr; with direction: rtl; and vice versa.

The original implementation only does this inside body selectors and misses "body\n{\ndirection:ltr;\n}". This function does not have these problems.

See http://code.google.com/p/cssjanus/issues/detail?id=15 and TODO: URL

Parameters:

$css

string

Returns:

string

Definition at line 195 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixFourPartNotation

(

$

css

)

[static, private]

Swap the second and fourth parts in four-part notation rules like padding: 1px 2px 3px 4px;.

Unlike the original implementation, this function doesn't suffer from the bug where whitespace is not preserved when flipping four-part rules and four-part color rules with multiple whitespace characters between colors are not recognized. See http://code.google.com/p/cssjanus/issues/detail?id=16

Parameters:

$css

string

Returns:

string

Definition at line 269 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixLeftAndRight

(

$

css

)

[static, private]

Flip rules like left: , padding-right: , etc.

Parameters:

$css

string

Returns:

string

Definition at line 235 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixLeftRightInURL

(

$

css

)

[static, private]

Replace 'left' with 'right' and vice versa in background URLs.

Parameters:

$css

string

Returns:

string

Definition at line 222 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixLtrRtlInURL

(

$

css

)

[static, private]

Replace 'ltr' with 'rtl' and vice versa in background URLs.

Parameters:

$css

string

Returns:

string

Definition at line 209 of file CSSJanus.php.

References $css.

Referenced by transform().

static CSSJanus::fixShadows

(

$

css

)

[static, private]

Negates horizontal offset in box-shadow and text-shadow rules.

Parameters:

$css

string

Returns:

string

Definition at line 297 of file CSSJanus.php.

References $css, and $matches.

Referenced by transform().

static CSSJanus::transform	(	$	css,
		$	swapLtrRtlInURL = false,
		$	swapLeftRightInURL = false
	)		[static]

Transform an LTR stylesheet to RTL.

Parameters:

string	$css	stylesheet to transform
	$swapLtrRtlInURL	Boolean: If true, swap 'ltr' and 'rtl' in URLs
	$swapLeftRightInURL	Boolean: If true, swap 'left' and 'right' in URLs

Returns:

string Transformed stylesheet

Definition at line 139 of file CSSJanus.php.

References $css, buildPatterns(), fixBackgroundPosition(), fixBorderRadius(), fixCursorProperties(), fixDirection(), fixFourPartNotation(), fixLeftAndRight(), fixLeftRightInURL(), fixLtrRtlInURL(), and fixShadows().

Referenced by ResourceLoaderUserCSSPrefsModule\getStyles(), ResourceLoaderWikiModule\getStyles(), ResourceLoaderFileModule\readStyleFile(), CSSJanusTest\testTransform(), CSSJanusTest\testTransformAdvanced(), and CSSJanusTest\testTransformBroken().

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Member Data Documentation

CSSJanus::$patterns [static, private]

Definition at line 39 of file CSSJanus.php.

Referenced by buildPatterns().

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

• includes/libs/CSSJanus.php