1 files changed, 123 insertions, 0 deletions
diff --git a/library/Icinga/Util/Dimension.php b/library/Icinga/Util/Dimension.php
new file mode 100644
index 0000000..6860fd8
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+++ b/library/Icinga/Util/Dimension.php
@@ -0,0 +1,123 @@
+<?php
+/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Util;
+
+class Dimension
+{
+    /**
+     * Defines this dimension as nr of pixels
+     */
+    const UNIT_PX = "px";
+
+    /**
+     * Defines this dimension as width of 'M' in current font
+     */
+    const UNIT_EM = "em";
+
+    /**
+     * Defines this dimension as a percentage value
+     */
+    const UNIT_PERCENT = "%";
+
+    /**
+     * Defines this dimension in points
+     */
+    const UNIT_PT = "pt";
+
+    /**
+     * The current set value for this dimension
+     *
+     * @var int
+     */
+    private $value = 0;
+
+    /**
+     * The unit to interpret the value with
+     *
+     * @var string
+     */
+    private $unit = self::UNIT_PX;
+
+    /**
+     * Create a new Dimension object with the given size and unit
+     *
+     * @param int $value        The new value
+     * @param string $unit      The unit to use (default: px)
+     */
+    public function __construct($value, $unit = self::UNIT_PX)
+    {
+        $this->setValue($value, $unit);
+    }
+
+    /**
+     * Change the value and unit of this dimension
+     *
+     * @param int $value        The new value
+     * @param string $unit      The unit to use (default: px)
+     */
+    public function setValue($value, $unit = self::UNIT_PX)
+    {
+        $this->value = intval($value);
+        $this->unit = $unit;
+    }
+
+    /**
+     * Return true when the value is > 0
+     *
+     * @return bool
+     */
+    public function isDefined()
+    {
+        return $this->value > 0;
+    }
+
+    /**
+     * Return the underlying value without unit information
+     *
+     * @return int
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Return the unit used for the value
+     *
+     * @return string
+     */
+    public function getUnit()
+    {
+        return $this->unit;
+    }
+
+    /**
+     * Return this value with it's according unit as a string
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        if (!$this->isDefined()) {
+            return "";
+        }
+        return $this->value.$this->unit;
+    }
+
+    /**
+     * Create a new Dimension object from a string containing the numeric value and the dimension (e.g. 200px, 20%)
+     *
+     * @param $string                       The string to parse
+     *
+     * @return Dimension
+     */
+    public static function fromString($string)
+    {
+        $matches = array();
+        if (!preg_match_all('/^ *([0-9]+)(px|pt|em|\%) */i', $string, $matches)) {
+            return new Dimension(0);
+        }
+        return new Dimension(intval($matches[1][0]), $matches[2][0]);
+    }
+}