1 files changed, 56 insertions, 0 deletions
diff --git a/library/Icinga/Chart/Unit/AxisUnit.php b/library/Icinga/Chart/Unit/AxisUnit.php
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index 0000000..251787f
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+++ b/library/Icinga/Chart/Unit/AxisUnit.php
@@ -0,0 +1,56 @@
+<?php
+/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Chart\Unit;
+
+use Iterator;
+
+/**
+ * Base class for Axis Units
+ *
+ * An AxisUnit takes a set of values and places them on a given range
+ *
+ * Concrete subclasses must implement the iterator interface, with
+ * getCurrent returning the axis relative position and getValue the label
+ * that will be displayed
+ */
+interface AxisUnit extends Iterator
+{
+    /**
+     * Add a dataset to this AxisUnit, required for dynamic min and max vlaues
+     *
+     * @param array $dataset    The dataset that will be shown in the Axis
+     * @param int $id           The idx in the dataset (0 for x, 1 for y)
+     */
+    public function addValues(array $dataset, $id = 0);
+
+    /**
+     * Transform the given absolute value in an axis relative value
+     *
+     * @param   int $value The absolute, dataset dependent value
+     *
+     * @return  int        An axis relative value
+     */
+    public function transform($value);
+
+    /**
+     * Set the axis minimum value to a fixed value
+     *
+     * @param int $min The new minimum value
+     */
+    public function setMin($min);
+
+    /**
+     * Set the axis maximum value to a fixed value
+     *
+     * @param int $max The new maximum value
+     */
+    public function setMax($max);
+
+    /**
+     * Get the amount of ticks of this axis
+     *
+     * @return int
+     */
+    public function getTicks();
+}