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<?php
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class CSSFontSize extends CSSSubFieldProperty {
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var $_defaultValue;
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function CSSFontSize(&$owner, $field) {
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$this->CSSSubFieldProperty($owner, $field);
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$this->_defaultValue = Value::fromData(BASE_FONT_SIZE_PT, UNIT_PT);
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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 ($value == 'inherit') {
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return CSS_PROPERTY_INHERIT;
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}
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$value = trim(strtolower($value));
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switch(strtolower($value)) {
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case "xx-small":
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return Value::fromData(BASE_FONT_SIZE_PT*3/5, UNIT_PT);
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case "x-small":
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return Value::fromData(BASE_FONT_SIZE_PT*3/4, UNIT_PT);
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case "small":
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return Value::fromData(BASE_FONT_SIZE_PT*8/9, UNIT_PT);
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case "medium":
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return Value::fromData(BASE_FONT_SIZE_PT, UNIT_PT);
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case "large":
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return Value::fromData(BASE_FONT_SIZE_PT*6/5, UNIT_PT);
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case "x-large":
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return Value::fromData(BASE_FONT_SIZE_PT*3/2, UNIT_PT);
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case "xx-large":
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return Value::fromData(BASE_FONT_SIZE_PT*2/1, UNIT_PT);
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};
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switch(strtolower($value)) {
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case "larger":
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return Value::fromData(1.2, UNIT_EM);
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case "smaller":
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return Value::fromData(0.83, UNIT_EM); // 0.83 = 1/1.2
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};
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if (preg_match("/(\d+\.?\d*)%/i", $value, $matches)) {
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return Value::fromData($matches[1]/100, UNIT_EM);
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};
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return Value::fromString($value);
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}
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function get_property_code() {
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return CSS_FONT_SIZE;
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}
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function get_property_name() {
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return 'font-size';
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}
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}
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?>
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