Initial commit

src/Elements/TextElement.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace NoccyLabs\GdLabel\Elements;
+
+use NoccyLabs\GdLabel\Element;
+
+class TextElement extends Element
+{
+
+    private static $fontCache = [];
+
+    private static function findFont($font)
+    {
+        if (count(self::$fontCache)==0) {
+            self::updateFonts();
+        }
+
+        $font = strtolower($font);
+
+        if (array_key_exists($font, self::$fontCache)) {
+            return self::$fontCache[$font];
+        }
+        return false;
+    }
+
+    private static function updateFonts()
+    {
+        exec("fc-list", $output, $ret);
+        if ($ret != 0) {
+            fprintf(STDERR, "%s\n", join("\n",$output));
+            return;
+        }
+        foreach ($output as $line) {
+            $seg = explode(":", $line);
+            $file = $seg[0];
+            $name = strtolower(trim(preg_replace("/[^A-Za-z0-9 ]/", '', $seg[1])));
+            self::$fontCache[$name] = $file;
+        }
+
+    }
+
+    protected function draw($gd, int $x, int $y, int $width, int $height, array $params)
+    {
+        if (($bound = $this->getProp("bind-value"))) {
+            $value = array_key_exists($bound, $params)?$params[$bound]:"?{$bound}?";
+        } else {
+            $value = $this->getProp("value");
+        }
+
+        $font = self::findFont("liberation sans");
+        if (!$font) {
+            return;
+        }
+
+        $color = $this->getPropRgb("text-color");
+
+        $size = $this->getProp("font-size", 8);
+
+        $dims = imagettfbbox($size, 0, $font, $value);
+
+        $textAscent = abs($dims[7]);
+        $textDescent = abs($dims[1]);
+        $textWidth = abs($dims[0])+abs($dims[2]);
+        $textHeight = $textAscent+$textDescent;
+
+        imagettftext($gd, $size, 0, $x, $y + $textAscent, $color, $font, $value);
+        //imagestring($gd, $size, $x, $y, $value, $color);
+        
+    }
+
+
+}