From 4d85666c188b678728501ca0f6781a526c55439c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=95=D0=B2=D0=B3=D0=B5=D0=BD=D0=B8=D0=B9?=
 <info@promo360.ru>
Date: Mon, 18 Nov 2013 10:40:39 +0600
Subject: [PATCH] Transparency PNG
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При использовании функций resize или crop (остальные функции не проверялись) к PNG изображению с прозрачным фоном терялась прозрачность, фон становился черным.
---
 libraries/Gelato/Image/Image.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libraries/Gelato/Image/Image.php b/libraries/Gelato/Image/Image.php
index b4e5faf..07abc38 100644
--- a/libraries/Gelato/Image/Image.php
+++ b/libraries/Gelato/Image/Image.php
@@ -218,6 +218,8 @@ class Image
 
         // Create a new true color image width new width and height
         $resized = imagecreatetruecolor($new_width, $new_height);
+        $transPng = imagecolorallocatealpha($resized, 0, 0, 0, 127);
+        imagefill($resized, 0, 0, $transPng);
 
         // Copy and resize part of an image with resampling
         imagecopyresampled($resized, $this->image, 0, 0, 0, 0, $new_width, $new_height, $this->width, $this->height);
@@ -227,6 +229,8 @@ class Image
 
         // Create a new true color image width new width and height
         $this->image = imagecreatetruecolor($new_width, $new_height);
+        $transPng = imagecolorallocatealpha($this->image, 0, 0, 0, 127);
+        imagefill($this->image, 0, 0, $transPng);
 
         // Copy and resize part of an image with resampling
         imagecopyresampled($this->image, $resized, 0, 0, 0, 0, $new_width, $new_height, $new_width, $new_height);
@@ -269,6 +273,8 @@ class Image
 
         // Create a new true color image
         $crop = imagecreatetruecolor($width, $height);
+        $transPng = imagecolorallocatealpha($crop, 0, 0, 0, 127);
+        imagefill($crop, 0, 0, $transPng);
 
         // Copy and resize part of an image with resampling
         imagecopyresampled($crop, $this->image, 0, 0, $x, $y, $this->width, $this->height, $this->width, $this->height);
@@ -278,6 +284,8 @@ class Image
 
         // Create a new true color image
         $this->image = imagecreatetruecolor($width, $height);
+        $transPng = imagecolorallocatealpha($this->image, 0, 0, 0, 127);
+        imagefill($this->image, 0, 0, $transPng);
 
         // Copy and resize part of an image with resampling
         imagecopyresampled($this->image, $crop, 0, 0, 0, 0, $width, $height, $width, $height);