Initial commit

src/Element.php

@@ -0,0 +1,94 @@
+<?php
+
+namespace NoccyLabs\GdLabel;
+
+abstract class Element
+{
+    /** @var Element[] $children */
+    protected $children = [];
+    
+    /** @var array $props */
+    protected $props = [];
+
+    /**
+     * Add a new child
+     * 
+     * @param Element $element
+     */
+    public function addChild(Element $element)
+    {
+        $this->children[] = $element;
+    }
+
+    /**
+     * Get all children
+     * 
+     * @return Element[] Child elements
+     */
+    public function getChildren():iterable
+    {
+        return $this->children;
+    }
+
+    /**
+     * Render the element
+     * 
+     * @param gd $canvas
+     * @param int $x
+     * @param int $y
+     * @param int $width
+     * @param int $height
+     * @param array $params
+     */
+    public function drawElement($canvas, int $x, int $y, int $width, int $height, array $params)
+    {
+        $this->draw($canvas, $x, $y, $width, $height, $params);
+    }
+
+    protected function draw($canvas, int $x, int $y, int $width, int $height, array $params)
+    {
+
+    }
+
+    protected function rgb($color)
+    {
+        if (is_integer($color)) {
+            return $color;
+        } elseif (preg_match('/^#[0-9A-F]{6}$/i', $color)) {
+            [$r,$g,$b] = \sscanf($color, "#%02x%02x%02x");
+            return $r | $g << 8 | $b << 16;
+        } else {
+            return null;
+        }
+    }
+
+    public function setProp(string $key, $value)
+    {
+        $this->props[$key] = $value;
+    }
+
+    public function getProp(string $key, $default=null)
+    {
+        return array_key_exists($key, $this->props)
+            ?$this->props[$key]
+            :$default
+            ;
+    }
+
+    public function getPropRgb(string $key, $default=null)
+    {
+        $color = $this->getProp($key, $default);
+        return $this->rgb($color);
+    }
+
+    public function getProps():iterable
+    {
+        return $this->props;
+    }
+
+    protected function warning($msg)
+    {
+        defined("STDERR") && fprintf(STDERR, "%s\n", rtrim($msg));
+    }
+
+}