<?php
/**
* Double Colon
* Compile pseudo element double colon syntax to single colon syntax for backwards compatibility
*
* @before
* p::after { content: '!'; }
*
* @after
* p:after { content: '!'; }
*
*/
CssCrush_Hook::add('rule_preprocess', 'csscrush_doublecolon');
function csscrush_doublecolon($rule)
{
$rule->selector_raw = preg_replace('!::(after|before|first-letter|first-line)!', ':$1', $rule->selector_raw);
}
<?php
/**
* RGBA fallback
* Only works with background shorthand IE < 8
* (http://css-tricks.com/2151-rgba-browser-support/)
*
* @before
* background: rgba(0,0,0,.5);
*
* @after
* background: rgb(0,0,0);
* background: rgba(0,0,0,.5);
*/
CssCrush_Hook::add('rule_postalias', 'csscrush_rgba');
function csscrush_rgba(CssCrush_Rule $rule)
{
$props = array_keys($rule->properties);
// Determine which properties apply
$rgba_props = array();
foreach ($props as $prop) {
if ($prop === 'background' or strpos($prop, 'color') !== false) {
$rgba_props[] = $prop;
}
}
if (empty($rgba_props)) {
return;
}
$new_set = array();
foreach ($rule as $declaration) {
$is_viable = in_array($declaration->property, $rgba_props);
<?php
/**
* Fix clip syntax for IE < 8
*
* @before
* clip: rect(1px,1px,1px,1px);
*
* @after
* clip: rect(1px,1px,1px,1px);
* *clip: rect(1px 1px 1px 1px);
*/
CssCrush_Hook::add('rule_postalias', 'csscrush_clip');
function csscrush_clip(CssCrush_Rule $rule)
{
// Assume it's been dealt with if the property occurs more than once
if ($rule->propertyCount('clip') !== 1) {
return;
}
$new_set = array();
foreach ($rule as $declaration) {
$new_set[] = $declaration;
if ($declaration->skip or $declaration->property !== 'clip') {
continue;
}
$new_set[] = $rule->createDeclaration('*clip', str_replace(',', ' ', $rule->getDeclarationValue($declaration)));
}
$rule->declarations = $new_set;
}
<?php
/**
* Opacity for IE < 9
*
* @before
* opacity: 0.45;
*
* @after
* opacity: 0.45;
* -ms-filter: "alpha(opacity=45)";
* *filter: alpha(opacity=45);
* zoom: 1;
*/
CssCrush_Hook::add('rule_postalias', 'csscrush_opacity');
function csscrush_opacity(CssCrush_Rule $rule)
{
if ($rule->propertyCount('opacity') < 1) {
return;
}
$new_set = array();
foreach ($rule as $declaration) {
$new_set[] = $declaration;
if ($declaration->skip or $declaration->property != 'opacity') {
continue;
}
$opacity = (double) $declaration->value;
$opacity = round($opacity * 100);
if (!$rule->propertyCount('zoom')) {
// Filters need hasLayout
$new_set[] = $rule->createDeclaration('zoom', 1);
<?php
/**
* Hocus Pocus
* Non-standard composite pseudo classes
*
* @before
* a:hocus { color: red; }
* a:pocus { color: red; }
*
* @after
* a:hover, a:focus { color: red; }
* a:hover, a:focus, a:active { color: red; }
*
*/
CssCrush_Hook::add('rule_preprocess', 'csscrush_hocuspocus');
function csscrush_hocuspocus($rule)
{
$adjustments = array('!:hocus([^a-z0-9_-])!' => ':any(:hover,:focus)$1', '!:pocus([^a-z0-9_-])!' => ':any(:hover,:focus,:active)$1');
$rule->selector_raw = preg_replace(array_keys($adjustments), array_values($adjustments), $rule->selector_raw);
}
<?php
/**
* Fix min-height in IE 6
*
* @before
* min-height: 100px;
*
* @after
* min-height: 100px;
* _height: 100px;
*/
CssCrush_Hook::add('rule_postalias', 'csscrush_minheight');
function csscrush_minheight(CssCrush_Rule $rule)
{
if ($rule->propertyCount('min-height') < 1) {
return;
}
$new_set = array();
foreach ($rule as $declaration) {
$new_set[] = $declaration;
if ($declaration->skip or $declaration->property !== 'min-height') {
continue;
}
$new_set[] = $rule->createDeclaration('_height', $declaration->value);
}
$rule->declarations = $new_set;
}
<?php
/**
* HSL shim
* Converts HSL values into hex code that works in all browsers
*
* @before
* color: hsl( 100, 50%, 50% )
*
* @after
* color: #6abf40
*/
CssCrush_Hook::add('rule_postalias', 'csscrush_hsl');
function csscrush_hsl(CssCrush_Rule $rule)
{
foreach ($rule as &$declaration) {
if (!$declaration->skip and (!empty($declaration->functions) and in_array('hsl', $declaration->functions))) {
while (preg_match('!hsl(___p\\d+___)!', $declaration->value, $m)) {
$full_match = $m[0];
$token = $m[1];
$hsl = trim($rule->parens[$token], '()');
$hsl = array_map('trim', explode(',', $hsl));
$rgb = CssCrush_Color::cssHslToRgb($hsl);
$hex = CssCrush_Color::rgbToHex($rgb);
$declaration->value = str_replace($full_match, $hex, $declaration->value);
}
}
}
}
* IE filter without the cruft
*
* Using ms vendor prefix outputs expanded and quoted syntax for IE > 7
* Outputs '*' escaped filter property for IE < 8
* Adds hasLayout via zoom property (required by filter effects)
*
*
* @before
* -ms-filter: alpha(opacity=50), blur(strength=10);
*
* @after
* -ms-filter: "alpha(opacity=50), progid:DXImageTransform.Microsoft.Blur(strength=10)";
* *filter: alpha(opacity=50), progid:DXImageTransform.Microsoft.Blur(strength=10);
* zoom: 1;
*/
CssCrush_Hook::add('rule_postalias', 'csscrush_filter');
function csscrush_filter(CssCrush_Rule $rule)
{
if ($rule->propertyCount('-ms-filter') < 1) {
return;
}
$filter_prefix = 'progid:DXImageTransform.Microsoft.';
$new_set = array();
foreach ($rule as $declaration) {
if ($declaration->skip or $declaration->property !== '-ms-filter') {
$new_set[] = $declaration;
continue;
}
$list = array_map('trim', explode(',', $declaration->value));
foreach ($list as &$item) {
if (strpos($item, $filter_prefix) !== 0 and strpos($item, 'alpha') !== 0) {
<?php
/**
* Simulate inline-block in IE < 8
*
* @before
* display: inline-block;
*
* @after
* display: inline-block;
* *display: inline;
* *zoom: 1;
*/
CssCrush_Hook::add('rule_postalias', 'csscrush_display_inlineblock');
function csscrush_display_inlineblock(CssCrush_Rule $rule)
{
if ($rule->propertyCount('display') < 1) {
return;
}
$new_set = array();
foreach ($rule as $declaration) {
$new_set[] = $declaration;
$is_display = $declaration->property === 'display';
if ($declaration->skip or !$is_display or $is_display and $declaration->value !== 'inline-block') {
continue;
}
$new_set[] = $rule->createDeclaration('*display', 'inline');
$new_set[] = $rule->createDeclaration('*zoom', 1);
}
$rule->declarations = $new_set;
}
/**
* Shim for CSS3 'initial' keyword value
* (http://www.w3.org/TR/css3-cascade/#initial0)
*
* @before
* opacity: initial;
* white-space: initial;
* min-height: initial;
*
* @after
* opacity: 1;
* white-space: normal;
* max-height: auto;
*
*/
CssCrush_Hook::add('rule_prealias', 'csscrush_initial');
function csscrush_initial(CssCrush_Rule $rule)
{
static $initialValues = null;
if (!$initialValues) {
if (!($initialValues = @parse_ini_file(CssCrush::$location . '/misc/initial-values.ini'))) {
trigger_error(__METHOD__ . ": Initial keywords file could not be parsed.\n", E_USER_NOTICE);
return;
}
}
foreach ($rule as &$declaration) {
if (!$declaration->skip and 'initial' === $declaration->value) {
if (isset($initialValues[$declaration->property])) {
$declaration->value = $initialValues[$declaration->property];
} else {
// Fallback to 'inherit'
