Shadow tags. Meh. :D
Current tag code is this:
array(
'tag' => 'shadow',
'type' => 'unparsed_commas',
'test' => '[#0-9a-zA-Z\-]{3,12},(left|right|top|bottom|[0123]\d{0,2})\]',
'before' => isBrowser('ie') ? '<span style="display: inline-block; filter: Shadow(color=$1, direction=$2); height: 1.2em;">' : '<span style="text-shadow: $1 $2">',
'after' => '</span>',
'validate' => isBrowser('ie') ? create_function('&$tag, &$data, $disabled', '
if ($data[1] == \'left\')
$data[1] = 270;
elseif ($data[1] == \'right\')
$data[1] = 90;
elseif ($data[1] == \'top\')
$data[1] = 0;
elseif ($data[1] == \'bottom\')
$data[1] = 180;
else
$data[1] = (int) $data[1];') : create_function('&$tag, &$data, $disabled', '
if ($data[1] == \'top\' || (is_numeric($data[1]) && $data[1] < 50))
$data[1] = \'0 -2px 1px\';
elseif ($data[1] == \'right\' || (is_numeric($data[1]) && $data[1] < 100))
$data[1] = \'2px 0 1px\';
elseif ($data[1] == \'bottom\' || (is_numeric($data[1]) && $data[1] < 190))
$data[1] = \'0 2px 1px\';
elseif ($data[1] == \'left\' || (is_numeric($data[1]) && $data[1] < 280))
$data[1] = \'-2px 0 1px\';
else
$data[1] = \'1px 1px 1px\';'),
),
The W3C text-shadow works in most browsers, including IE10. The filter fallback is for IE8 and 9 only, and looks like crap in them anyway. It's particularly bad if someone uses a shorthand hex code for the shadow. See attached screenshot.
Since this tag is hardly ever used, and since I don't care if people can't make text illegible in old versions of IE, I vote we kill the filter and just run the text-shadow option. :)
array(
'tag' => 'shadow',
'type' => 'unparsed_commas',
'test' => '[#0-9a-zA-Z\-]{3,12},(left|right|top|bottom|[0123]\d{0,2})\]',
'before' => '<span style="text-shadow: $1 $2">',
'after' => '</span>',
'validate' => create_function('&$tag, &$data, $disabled', '
if ($data[1] == \'top\' || (is_numeric($data[1]) && $data[1] < 50))
$data[1] = \'0 -2px 1px\';
elseif ($data[1] == \'right\' || (is_numeric($data[1]) && $data[1] < 100))
$data[1] = \'2px 0 1px\';
elseif ($data[1] == \'bottom\' || (is_numeric($data[1]) && $data[1] < 190))
$data[1] = \'0 2px 1px\';
elseif ($data[1] == \'left\' || (is_numeric($data[1]) && $data[1] < 280))
$data[1] = \'-2px 0 1px\';
else
$data[1] = \'1px 1px 1px\';'),
),
Hey what? ;D Just looked at the code for glow tags. It does exactly the same thing as the show tags. Ipx offset, 1px blur radius.
array(
'tag' => 'glow',
'type' => 'unparsed_commas',
'test' => '[#0-9a-zA-Z\-]{3,12},([012]\d{1,2}|\d{1,2})(,[^]]+)?\]',
'before' => isBrowser('ie') ? '<table style="border-collapse: collapse; border-spacing: 0;display: inline; vertical-align: middle; font: inherit;"><tr><td style="filter: Glow(color=$1, strength=$2); font: inherit;">' : '<span style="text-shadow: $1 1px 1px 1px">',
'after' => isBrowser('ie') ? '</td></tr></table> ' : '</span>',
),
That being the case, I think one of those tags should be deprecated. If we need a backwards compat fix, some sources trickery to meld the two in the array might be in order.
Since shadow is more in keeping with the CSS3 property being called, I think glow should be the one that is deprecated.
ETA: Ok, forget deprecation and funny array stuff. I just cleaned it up and made it do something a bit different to shadow. It will now give a 4px blur radius instead of 1px, and will be centered on the text instead of offset. Seems to make sense.
array(
'tag' => 'glow',
'type' => 'unparsed_commas',
'test' => '[#0-9a-zA-Z\-]{3,12},([012]\d{1,2}|\d{1,2})(,[^]]+)?\]',
'before' => '<span style="text-shadow: $1 0 0 4px">',
'after' => '</span>',
),
preparsecode() replaces them with the standardized color tag, even.