From 0e3fe358d4ada304fbe661a7c25b10cee089a4a2 Mon Sep 17 00:00:00 2001
From: Ismo Vuorinen <ismo@ivuorinen.net>
Date: Tue, 10 Dec 2013 07:20:52 +0200
Subject: [PATCH] imagettftextblur helper

---
 application/helpers/ecards_helper.php | 131 ++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)

diff --git a/application/helpers/ecards_helper.php b/application/helpers/ecards_helper.php
index bc295ed..ef378da 100644
--- a/application/helpers/ecards_helper.php
+++ b/application/helpers/ecards_helper.php
@@ -80,6 +80,137 @@ function checkboxed(
     return $string;
 }
 
+/*
+ * imagettftextblur v1.0.0
+ *
+ * Copyright (c) 2013 Andrew G. Johnson  <andrew@andrewgjohnson.com>
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * @author Andrew G. Johnson <andrew@andrewgjohnson.com>
+ * @copyright Copyright (c) 2013 Andrew G. Johnson <andrew@andrewgjohnson.com>
+ * @link http://github.com/andrewgjohnson/imagettftextblur
+ * @license http://www.opensource.org/licenses/mit-license.php The MIT License
+ * @version 1.0.0
+ * @package imagettftextblur
+ *
+ */
+if (!function_exists('imagettftextblur')) {
+
+    /**
+     * imagettftextblur
+     *
+     * @author Andrew G. Johnson <andrew@andrewgjohnson.com>
+     * @link   http://github.com/andrewgjohnson/imagettftextblur
+     *
+     * @param  resource $image          Image resource
+     * @param  integer  $size           Font size
+     * @param  integer  $angle          Text angle
+     * @param  integer  $x              First letter x cordinate
+     * @param  integer  $y              First letter baseline y cordinate
+     * @param  integer  $color          Color index
+     * @param  string   $fontfile       Path to font file (.ttf)
+     * @param  string   $text           Text on image
+     * @param  integer  $blur_intensity Blur intensity, more the blurrier
+     * @return [type]                   [description]
+     */
+    function imagettftextblur(
+        &$image,
+        $size,
+        $angle,
+        $x,
+        $y,
+        $color,
+        $fontfile,
+        $text,
+        $blur_intensity = null
+    ) {
+        $blur_intensity = !is_null($blur_intensity) && is_numeric($blur_intensity)
+                                ? (int)$blur_intensity : 0;
+        if ($blur_intensity > 0) {
+            $text_shadow_image = imagecreatetruecolor(
+                imagesx($image),
+                imagesy($image)
+            );
+            imagefill(
+                $text_shadow_image,
+                0,
+                0,
+                imagecolorallocate(
+                    $text_shadow_image,
+                    0x00,
+                    0x00,
+                    0x00
+                )
+            );
+            imagettftext(
+                $text_shadow_image,
+                $size,
+                $angle,
+                $x,
+                $y,
+                imagecolorallocate(
+                    $text_shadow_image,
+                    0xFF,
+                    0xFF,
+                    0xFF
+                ),
+                $fontfile,
+                $text
+            );
+            for ($blur = 1; $blur <= $blur_intensity; $blur++) {
+                imagefilter($text_shadow_image, IMG_FILTER_GAUSSIAN_BLUR);
+            }
+            for ($x_offset = 0; $x_offset < imagesx($text_shadow_image); $x_offset++) {
+                for ($y_offset = 0; $y_offset < imagesy($text_shadow_image); $y_offset++) {
+                    $visibility = (imagecolorat($text_shadow_image, $x_offset, $y_offset) & 0xFF) / 255;
+                    if ($visibility > 0) {
+                        imagesetpixel(
+                            $image,
+                            $x_offset,
+                            $y_offset,
+                            imagecolorallocatealpha(
+                                $image,
+                                ($color >> 16) & 0xFF,
+                                ($color >> 8) & 0xFF,
+                                $color & 0xFF,
+                                (1 - $visibility) * 127
+                            )
+                        );
+                    }
+
+                }
+            }
+            imagedestroy($text_shadow_image);
+        } else {
+            return imagettftext(
+                $image,
+                $size,
+                $angle,
+                $x,
+                $y,
+                $color,
+                $fontfile,
+                $text
+            );
+        }
+
+    }
+}
+
 function fetchBaseCards($from = null)
 {
     if (empty($from)) {