function hoot_sanitize_hex($hex, $default = '')
{
if ($hex = hoot_color_santize_hex($hex)) {
return $hex;
}
if (!is_array($default)) {
if ($default = hoot_color_santize_hex($default)) {
return $default;
}
}
return null;
}
/**
* Check if a hexa color value is a 'dark' color
*
* @since 1.0.0
* @access public
* @param string $hex - hex color value to be manipulated
* @return bool
*/
public function isdark($hex)
{
$hex = hoot_color_santize_hex($hex);
// Returns sanitized color with '#'
if (empty($hex)) {
return null;
}
$redhex = substr($hex, 1, 2);
$greenhex = substr($hex, 3, 2);
$bluehex = substr($hex, 5, 2);
// $var_r, $var_g and $var_b are the three decimal fractions to be input to our RGB-to-HSL conversion routine
$var_r = hexdec($redhex) / 255;
$var_g = hexdec($greenhex) / 255;
$var_b = hexdec($bluehex) / 255;
// Input is $var_r, $var_g and $var_b from above
// Output is HSL equivalent as $h, $s and $l — these are expressed as fractions of 1, like the input values
$var_min = min($var_r, $var_g, $var_b);
$var_max = max($var_r, $var_g, $var_b);
$del_max = $var_max - $var_min;
$l = ($var_max + $var_min) / 2;
if ($del_max == 0) {
$h = 0;
$s = 0;
} else {
if ($l < 0.5) {
$s = $del_max / ($var_max + $var_min);
} else {
$s = $del_max / (2 - $var_max - $var_min);
}
$del_r = (($var_max - $var_r) / 6 + $del_max / 2) / $del_max;
$del_g = (($var_max - $var_g) / 6 + $del_max / 2) / $del_max;
$del_b = (($var_max - $var_b) / 6 + $del_max / 2) / $del_max;
if ($var_r == $var_max) {
$h = $del_b - $del_g;
} elseif ($var_g == $var_max) {
$h = 1 / 3 + $del_r - $del_b;
} elseif ($var_b == $var_max) {
$h = 2 / 3 + $del_g - $del_r;
}
if ($h < 0) {
$h += 1;
}
if ($h > 1) {
$h -= 1;
}
}
//So now we have the colour as an HSL value, in the variables $h, $s and $l. These three output variables are again held as fractions of 1 at this stage, rather than as degrees and percentages. So e.g., cyan (180° 100% 50%) would come out as $h = 0.5, $s = 1, and $l = 0.5.
if ($l < 0.5) {
return true;
} else {
return false;
}
}
/**
* Create CSS styles from a typography array.
*
* @since 1.1.1
* @access public
* @param array $typography
* @param bool $reset Reset earlier css rules from stylesheets etc.
* @return string
*/
function hoot_css_typography($typography, $reset = false)
{
$typography_defaults = array('size' => '', 'face' => '', 'style' => '', 'color' => '');
$typography = wp_parse_args($typography, $typography_defaults);
extract($typography, EXTR_SKIP);
$output = '';
if (!empty($color)) {
$color = hoot_color_santize_hex($color);
if ($color) {
$output .= hoot_css_rule('color', $color);
}
}
if (!empty($size)) {
$output .= hoot_css_rule('font-size', $size);
}
if (!empty($face)) {
$output .= hoot_css_rule('font-family', $face);
}
if (!empty($style)) {
switch ($style) {
case 'italic':
$output .= hoot_css_rule('font-style', 'italic');
if ($reset) {
$output .= hoot_css_rule('text-transform', 'none');
}
if ($reset) {
$output .= hoot_css_rule('font-weight', 'normal');
}
break;
case 'bold':
$output .= hoot_css_rule('font-weight', 'bold');
if ($reset) {
$output .= hoot_css_rule('text-transform', 'none');
}
if ($reset) {
$output .= hoot_css_rule('font-style', 'normal');
}
break;
case 'bold italic':
$output .= hoot_css_rule('font-weight', 'bold');
$output .= hoot_css_rule('font-style', 'italic');
if ($reset) {
$output .= hoot_css_rule('text-transform', 'none');
}
break;
case 'lighter':
$output .= hoot_css_rule('font-weight', 'lighter');
if ($reset) {
$output .= hoot_css_rule('text-transform', 'none');
}
if ($reset) {
$output .= hoot_css_rule('font-style', 'normal');
}
break;
case 'lighter italic':
$output .= hoot_css_rule('font-weight', 'lighter');
$output .= hoot_css_rule('font-style', 'italic');
if ($reset) {
$output .= hoot_css_rule('text-transform', 'none');
}
break;
case 'uppercase':
$output .= hoot_css_rule('text-transform', 'uppercase');
if ($reset) {
$output .= hoot_css_rule('font-weight', 'normal');
}
if ($reset) {
$output .= hoot_css_rule('font-style', 'normal');
}
break;
case 'uppercase italic':
$output .= hoot_css_rule('text-transform', 'uppercase');
$output .= hoot_css_rule('font-style', 'italic');
if ($reset) {
$output .= hoot_css_rule('font-weight', 'normal');
}
break;
case 'uppercase bold':
$output .= hoot_css_rule('text-transform', 'uppercase');
$output .= hoot_css_rule('font-weight', 'bold');
if ($reset) {
$output .= hoot_css_rule('font-style', 'normal');
}
break;
case 'uppercase bold italic':
$output .= hoot_css_rule('text-transform', 'uppercase');
$output .= hoot_css_rule('font-weight', 'bold');
$output .= hoot_css_rule('font-style', 'italic');
break;
case 'uppercase lighter':
$output .= hoot_css_rule('text-transform', 'uppercase');
$output .= hoot_css_rule('font-weight', 'lighter');
if ($reset) {
$output .= hoot_css_rule('font-style', 'normal');
}
break;
case 'uppercase lighter italic':
$output .= hoot_css_rule('text-transform', 'uppercase');
$output .= hoot_css_rule('font-weight', 'lighter');
$output .= hoot_css_rule('font-style', 'italic');
break;
case 'none':
default:
if ($reset) {
$output .= hoot_css_rule('text-transform', 'none');
}
if ($reset) {
$output .= hoot_css_rule('font-weight', 'normal');
}
if ($reset) {
$output .= hoot_css_rule('font-style', 'normal');
}
break;
}
}
return $output;
}
