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<?php
1		<?php
2
3		// Usage:
4		// Replace the contents of:
5		// /overrides/classes/ImageManager.php
6		// With this document. Then just add a new image size in the Backoffice :
7		// Preferences -> Images -> Add New
8		// AND name it whatever_btt (attach '_btt' at the end of the name string)
9		// THEN just use this image size where you want :)
10
11		// CAUTION! Check if you're using the same version of Prestashop as we do: 1.5.2
12		// (should work in all 1.5.xs though but we never checked :)
13
14		// Good luck - Bazinga Designs
15		// http://www.bazingadesigns.com/en
16
17		class ImageManager extends ImageManagerCore
18		{
19
20		/**
21		* Resize, cut and optimize image
22		*
23		* Zoom & Croop when the destination file name
24		* contains the '_timthumb' phrase
25		* - Modified by www.bazingadesigns.com/en
26		* (TimThumb ZoomCrop port)
27		*
28		* @param string $src_file Image object from $_FILE
29		* @param string $dst_file Destination filename
30		* @param integer $dst_width Desired width (optional)
31		* @param integer $dst_height Desired height (optional)
32		* @param string $file_type
33		* @return boolean Operation result
34		*/
35		public static function resize($src_file, $dst_file, $dst_width = null, $dst_height = null, $file_type = 'jpg', $force_type = false)
36		{
37		if (!file_exists($src_file))
38		return false;
39		list($src_width, $src_height, $type) = getimagesize($src_file);
40
41		// If PS_IMAGE_QUALITY is activated, the generated image will be a PNG with .jpg as a file extension.
42		// This allow for higher quality and for transparency. JPG source files will also benefit from a higher quality
43		// because JPG reencoding by GD, even with max quality setting, degrades the image.
44		if (Configuration::get('PS_IMAGE_QUALITY') == 'png_all'
45		\|\| (Configuration::get('PS_IMAGE_QUALITY') == 'png' && $type == IMAGETYPE_PNG) && !$force_type)
46		$file_type = 'png';
47
48		if (strpos($dst_file, '_btt')!==FALSE)
49		$zoomCrop = true;
50		else
51		$zoomCrop = false;
52
53		if (!$src_width)
54		return false;
55
56		if ($zoomCrop == true) {
57
58		if (!$dst_width) $dst_width = 0;
59		if (!$dst_height) $dst_height = 0;
60
61		} else {
62
63		if (!$dst_width)
64		$dst_width = $src_width;
65		if (!$dst_height)
66		$dst_height = $src_height;
67		}
68
69
70		$src_image = ImageManager::create($type, $src_file);
71
72		$width_diff = $dst_width / $src_width;
73		$height_diff = $dst_height / $src_height;
74
75		if ($zoomCrop==true) {
76
77		if ($dst_width>0 && $dst_height<1) {
78		$dst_height = floor ($src_height * ($dst_width / $src_width));
79		} else if ($dst_height>0 && $dst_width<1) {
80		$dst_width = floor ($src_width * ($dst_height / $src_height));
81		}
82
83		$src_x = $src_y = 0;
84		$src_w = $src_width;
85		$src_h = $src_height;
86
87		$cmp_x = $src_width / $dst_width;
88		$cmp_y = $src_height / $dst_height;
89
90		if ($cmp_x > $cmp_y) {
91
92		$src_w = round (($src_width / $cmp_x * $cmp_y));
93		$src_x = round (($src_width - ($src_width / $cmp_x * $cmp_y)) / 2);
94
95		} else if ($cmp_y > $cmp_x) {
96
97		$src_h = round (($src_height / $cmp_y * $cmp_x));
98		$src_y = round (($src_height - ($src_height / $cmp_y * $cmp_x)) / 2);
99
100		}
101
102		}
103
104		else if ($width_diff > 1 && $height_diff > 1)
105		{
106		$next_width = $src_width;
107		$next_height = $src_height;
108		}
109		else
110		{
111		if (Configuration::get('PS_IMAGE_GENERATION_METHOD') == 2 \|\| (!Configuration::get('PS_IMAGE_GENERATION_METHOD') && $width_diff > $height_diff))
112		{
113		$next_height = $dst_height;
114		$next_width = round(($src_width * $next_height) / $src_height);
115		$dst_width = (int)(!Configuration::get('PS_IMAGE_GENERATION_METHOD') ? $dst_width : $next_width);
116		}
117		else
118		{
119		$next_width = $dst_width;
120		$next_height = round($src_height * $dst_width / $src_width);
121		$dst_height = (int)(!Configuration::get('PS_IMAGE_GENERATION_METHOD') ? $dst_height : $next_height);
122		}
123		}
124
125		$dest_image = imagecreatetruecolor($dst_width, $dst_height);
126
127		// If image is a PNG and the output is PNG, fill with transparency. Else fill with white background.
128		if ($file_type == 'png' && $type == IMAGETYPE_PNG)
129		{
130		imagealphablending($dest_image, false);
131		imagesavealpha($dest_image, true);
132		$transparent = imagecolorallocatealpha($dest_image, 255, 255, 255, 127);
133		imagefilledrectangle($dest_image, 0, 0, $dst_width, $dst_height, $transparent);
134		}
135		else
136		{
137		$white = imagecolorallocate($dest_image, 255, 255, 255);
138		imagefilledrectangle ($dest_image, 0, 0, $dst_width, $dst_height, $white);
139		}
140
141		if ($zoomCrop==true)
142		imagecopyresampled($dest_image, $src_image, 0, 0, $src_x, $src_y, $dst_width, $dst_height, $src_w, $src_h);
143		else
144		imagecopyresampled($dest_image, $src_image, (int)(($dst_width - $next_width) / 2), (int)(($dst_height - $next_height) / 2), 0, 0, $next_width, $next_height, $src_width, $src_height);
145
146		return (ImageManager::write($file_type, $dest_image, $dst_file));
147		}
148
149		}