66 lines
1.9 KiB
PHP
66 lines
1.9 KiB
PHP
<?php
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// $Header: /cvsroot/html2ps/css.line-height.inc.php,v 1.15 2006/11/11 13:43:52 Konstantin Exp $
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require_once(HTML2PS_DIR.'value.line-height.class.php');
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/**
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* We'll treat 'line-height' as a subproperty of 'font', as it can be set using
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* 'font' value
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*/
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class CSSLineHeight extends CSSSubFieldProperty {
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var $_defaultValue;
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function CSSLineHeight(&$owner, $field) {
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$this->CSSSubFieldProperty($owner, $field);
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$this->_defaultValue = new LineHeight_Relative(1.1);
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}
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function default_value() {
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return $this->_defaultValue;
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}
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function parse($value) {
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if ($value === 'inherit') {
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return CSS_PROPERTY_INHERIT;
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};
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// <Number>
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// The used value of the property is this number multiplied by the element's font size.
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// Negative values are illegal. The computed value is the same as the specified value.
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if (preg_match("/^\d+(\.\d+)?$/",$value)) {
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return new LineHeight_Relative((float)$value);
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};
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// <percentage>
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// The computed value of the property is this percentage multiplied by the element's
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// computed font size. Negative values are illegal.
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if (preg_match("/^\d+%$/",$value)) {
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return new LineHeight_Relative(((float)$value)/100);
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};
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// normal
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// Tells user agents to set the used value to a "reasonable" value based on the font of the element.
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// The value has the same meaning as <number>. We recommend a used value for 'normal' between 1.0 to 1.2.
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// The computed value is 'normal'.
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if (trim($value) === "normal") {
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return $this->default_value();
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};
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// <length>
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// The specified length is used in the calculation of the line box height.
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// Negative values are illegal.
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return new LineHeight_Absolute($value);
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}
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function getPropertyCode() {
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return CSS_LINE_HEIGHT;
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}
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function getPropertyName() {
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return 'line-height';
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}
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}
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?>
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