diff options
Diffstat (limited to 'system/libraries/Image_lib.php')
| -rw-r--r-- | system/libraries/Image_lib.php | 243 |
1 files changed, 102 insertions, 141 deletions
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php index 20ca1f055..c86224ffb 100644 --- a/system/libraries/Image_lib.php +++ b/system/libraries/Image_lib.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -18,7 +18,7 @@ * * @package CodeIgniter * @author EllisLab Dev Team - * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/) + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 1.0 @@ -67,8 +67,8 @@ class CI_Image_lib { public $wm_padding = 0; // Padding around text public $wm_hor_offset = 0; // Lets you push text to the right public $wm_vrt_offset = 0; // Lets you push text down - public $wm_font_color = '#ffffff'; // Text color - public $wm_shadow_color = ''; // Dropshadow color + protected $wm_font_color = '#ffffff'; // Text color + protected $wm_shadow_color = ''; // Dropshadow color public $wm_shadow_distance = 2; // Dropshadow distance public $wm_opacity = 50; // Image opacity: 1 - 100 Only works with image @@ -85,7 +85,7 @@ class CI_Image_lib { public $create_fnc = 'imagecreatetruecolor'; public $copy_fnc = 'imagecopyresampled'; public $error_msg = array(); - public $wm_use_drop_shadow = FALSE; + protected $wm_use_drop_shadow = FALSE; public $wm_use_truetype = FALSE; /** @@ -111,7 +111,6 @@ class CI_Image_lib { * * Resets values in case this class is used in a loop * - * @access public * @return void */ public function clear() @@ -154,7 +153,6 @@ class CI_Image_lib { /** * initialize image preferences * - * @access public * @param array * @return bool */ @@ -167,7 +165,33 @@ class CI_Image_lib { { foreach ($props as $key => $val) { - $this->$key = $val; + if (property_exists($this, $key)) + { + if (in_array($key, array('wm_font_color', 'wm_shadow_color'))) + { + if (preg_match('/^#?([0-9a-f]{3}|[0-9a-f]{6})$/i', $val, $matches)) + { + /* $matches[1] contains our hex color value, but it might be + * both in the full 6-length format or the shortened 3-length + * value. + * We'll later need the full version, so we keep it if it's + * already there and if not - we'll convert to it. We can + * access string characters by their index as in an array, + * so we'll do that and use concatenation to form the final + * value: + */ + $val = (strlen($matches[1]) === 6) + ? '#'.$matches[1] + : '#'.$matches[1][0].$matches[1][0].$matches[1][1].$matches[1][1].$matches[1][2].$matches[1][2]; + } + else + { + continue; + } + } + + $this->$key = $val; + } } } @@ -334,22 +358,6 @@ class CI_Image_lib { $this->y_axis = ($this->y_axis == '' OR ! is_numeric($this->y_axis)) ? 0 : $this->y_axis; // Watermark-related Stuff... - if ($this->wm_font_color != '') - { - if (strlen($this->wm_font_color) == 6) - { - $this->wm_font_color = '#'.$this->wm_font_color; - } - } - - if ($this->wm_shadow_color != '') - { - if (strlen($this->wm_shadow_color) == 6) - { - $this->wm_shadow_color = '#'.$this->wm_shadow_color; - } - } - if ($this->wm_overlay_path != '') { $this->wm_overlay_path = str_replace("\\", "/", realpath($this->wm_overlay_path)); @@ -359,6 +367,10 @@ class CI_Image_lib { { $this->wm_use_drop_shadow = TRUE; } + elseif ($this->wm_use_drop_shadow == TRUE AND $this->wm_shadow_color == '') + { + $this->wm_use_drop_shadow = FALSE; + } if ($this->wm_font_path != '') { @@ -376,18 +388,11 @@ class CI_Image_lib { * This is a wrapper function that chooses the proper * resize function based on the protocol specified * - * @access public * @return bool */ public function resize() { - $protocol = 'image_process_'.$this->image_library; - - if (preg_match('/gd2$/i', $protocol)) - { - $protocol = 'image_process_gd'; - } - + $protocol = (strtolower(substr($this->image_library, 0, -3)) === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library; return $this->$protocol('resize'); } @@ -399,18 +404,11 @@ class CI_Image_lib { * This is a wrapper function that chooses the proper * cropping function based on the protocol specified * - * @access public * @return bool */ public function crop() { - $protocol = 'image_process_'.$this->image_library; - - if (preg_match('/gd2$/i', $protocol)) - { - $protocol = 'image_process_gd'; - } - + $protocol = (strtolower(substr($this->image_library, 0, -3)) === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library; return $this->$protocol('crop'); } @@ -422,7 +420,6 @@ class CI_Image_lib { * This is a wrapper function that chooses the proper * rotation function based on the protocol specified * - * @access public * @return bool */ public function rotate() @@ -453,7 +450,6 @@ class CI_Image_lib { if ($this->image_library == 'imagemagick' OR $this->image_library == 'netpbm') { $protocol = 'image_process_'.$this->image_library; - return $this->$protocol('rotate'); } @@ -474,7 +470,6 @@ class CI_Image_lib { * * This function will resize or crop * - * @access public * @param string * @return bool */ @@ -484,20 +479,14 @@ class CI_Image_lib { // If the target width/height match the source, AND if the new file name is not equal to the old file name // we'll simply make a copy of the original with the new name... assuming dynamic rendering is off. - if ($this->dynamic_output === FALSE) + if ($this->dynamic_output === FALSE AND $this->orig_width == $this->width AND $this->orig_height == $this->height) { - if ($this->orig_width == $this->width AND $this->orig_height == $this->height) + if ($this->source_image != $this->new_image AND @copy($this->full_src_path, $this->full_dst_path)) { - if ($this->source_image != $this->new_image) - { - if (@copy($this->full_src_path, $this->full_dst_path)) - { - @chmod($this->full_dst_path, FILE_WRITE_MODE); - } - } - - return TRUE; + @chmod($this->full_dst_path, FILE_WRITE_MODE); } + + return TRUE; } // Let's set up our values based on the action @@ -586,7 +575,6 @@ class CI_Image_lib { * * This function will resize, crop or rotate * - * @access public * @param string * @return bool */ @@ -601,9 +589,7 @@ class CI_Image_lib { if ( ! preg_match("/convert$/i", $this->library_path)) { - $this->library_path = rtrim($this->library_path, '/').'/'; - - $this->library_path .= 'convert'; + $this->library_path = rtrim($this->library_path, '/').'/convert'; } // Execute the command @@ -656,7 +642,6 @@ class CI_Image_lib { * * This function will resize, crop or rotate * - * @access public * @param string * @return bool */ @@ -740,7 +725,6 @@ class CI_Image_lib { /** * Image Rotate Using GD * - * @access public * @return bool */ public function image_rotate_gd() @@ -793,7 +777,6 @@ class CI_Image_lib { * * This function will flip horizontal or vertical * - * @access public * @return bool */ public function image_mirror_gd() @@ -808,11 +791,8 @@ class CI_Image_lib { if ($this->rotation_angle == 'hor') { - for ($i = 0; $i < $height; $i++) + for ($i = 0; $i < $height; $i++, $left = 0, $right = $width-1) { - $left = 0; - $right = $width-1; - while ($left < $right) { $cl = imagecolorat($src_img, $left, $i); @@ -828,11 +808,8 @@ class CI_Image_lib { } else { - for ($i = 0; $i < $width; $i++) + for ($i = 0; $i < $width; $i++, $top = 0, $bot = $height-1) { - $top = 0; - $bot = $height-1; - while ($top < $bot) { $ct = imagecolorat($src_img, $i, $top); @@ -878,7 +855,6 @@ class CI_Image_lib { * This is a wrapper function that chooses the type * of watermarking based on the specified preference. * - * @access public * @param string * @return bool */ @@ -899,7 +875,6 @@ class CI_Image_lib { /** * Watermark - Graphic Version * - * @access public * @return bool */ public function overlay_watermark() @@ -993,12 +968,9 @@ class CI_Image_lib { { $this->image_display_gd($src_img); } - else + elseif ( ! $this->image_save_gd($src_img)) { - if ( ! $this->image_save_gd($src_img)) - { - return FALSE; - } + return FALSE; } imagedestroy($src_img); @@ -1012,7 +984,6 @@ class CI_Image_lib { /** * Watermark - Text Version * - * @access public * @return bool */ public function text_watermark() @@ -1031,21 +1002,6 @@ class CI_Image_lib { // Fetch source image properties $this->get_image_properties(); - // Set RGB values for text and shadow - $this->wm_font_color = str_replace('#', '', $this->wm_font_color); - $this->wm_shadow_color = str_replace('#', '', $this->wm_shadow_color); - - $R1 = hexdec(substr($this->wm_font_color, 0, 2)); - $G1 = hexdec(substr($this->wm_font_color, 2, 2)); - $B1 = hexdec(substr($this->wm_font_color, 4, 2)); - - $R2 = hexdec(substr($this->wm_shadow_color, 0, 2)); - $G2 = hexdec(substr($this->wm_shadow_color, 2, 2)); - $B2 = hexdec(substr($this->wm_shadow_color, 4, 2)); - - $txt_color = imagecolorclosest($src_img, $R1, $G1, $B1); - $drp_color = imagecolorclosest($src_img, $R2, $G2, $B2); - // Reverse the vertical offset // When the image is positioned at the bottom // we don't want the vertical offset to push it @@ -1065,7 +1021,9 @@ class CI_Image_lib { if ($this->wm_use_truetype == TRUE) { if ($this->wm_font_size == '') - $this->wm_font_size = '17'; + { + $this->wm_font_size = 17; + } $fontwidth = $this->wm_font_size-($this->wm_font_size/4); $fontheight = $this->wm_font_size; @@ -1090,11 +1048,11 @@ class CI_Image_lib { switch ($this->wm_vrt_alignment) { - case "T" : + case 'T': break; - case "M": $y_axis += ($this->orig_height/2)+($fontheight/2); + case 'M': $y_axis += ($this->orig_height/2)+($fontheight/2); break; - case "B": $y_axis += ($this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight/2)); + case 'B': $y_axis += ($this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight/2)); break; } @@ -1104,32 +1062,48 @@ class CI_Image_lib { // Set horizontal alignment switch ($this->wm_hor_alignment) { - case "L": + case 'L': break; - case "R": - if ($this->wm_use_drop_shadow) - $x_shad += ($this->orig_width - $fontwidth*strlen($this->wm_text)); - $x_axis += ($this->orig_width - $fontwidth*strlen($this->wm_text)); + case 'R': + if ($this->wm_use_drop_shadow) + { + $x_shad += ($this->orig_width - $fontwidth*strlen($this->wm_text)); + $x_axis += ($this->orig_width - $fontwidth*strlen($this->wm_text)); + } break; - case "C": - if ($this->wm_use_drop_shadow) - $x_shad += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2); - $x_axis += floor(($this->orig_width -$fontwidth*strlen($this->wm_text))/2); + case 'C': + if ($this->wm_use_drop_shadow) + { + $x_shad += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2); + $x_axis += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2); + } break; } - // Add the text to the source image - if ($this->wm_use_truetype) + if ($this->wm_use_drop_shadow) { - if ($this->wm_use_drop_shadow) + /* Set RGB values for text and shadow + * + * First character is #, so we don't really need it. + * Get the rest of the string and split it into 2-length + * hex values: + */ + $txt_color = str_split(substr($this->wm_font_color, 1, 6), 2); + $txt_color = imagecolorclosest($src_img, hexdec($txt_color[0]), hexdec($txt_color[1]), hexdec($txt_color[2])); + $drp_color = str_split(substr($this->wm_shadow_color, 1, 6), 2); + $drp_color = imagecolorclosest($src_img, hexdec($drp_color[0]), hexdec($drp_color[2]), hexdec($drp_color[3])); + + // Add the text to the source image + if ($this->wm_use_truetype) + { imagettftext($src_img, $this->wm_font_size, 0, $x_shad, $y_shad, $drp_color, $this->wm_font_path, $this->wm_text); imagettftext($src_img, $this->wm_font_size, 0, $x_axis, $y_axis, $txt_color, $this->wm_font_path, $this->wm_text); - } - else - { - if ($this->wm_use_drop_shadow) + } + else + { imagestring($src_img, $this->wm_font_size, $x_shad, $y_shad, $this->wm_text, $drp_color); imagestring($src_img, $this->wm_font_size, $x_axis, $y_axis, $this->wm_text, $txt_color); + } } // Output the final image @@ -1155,7 +1129,6 @@ class CI_Image_lib { * This simply creates an image resource handle * based on the type of image being processed * - * @access public * @param string * @return resource */ @@ -1212,7 +1185,6 @@ class CI_Image_lib { * Takes an image resource as input and writes the file * to the specified destination * - * @access public * @param resource * @return bool */ @@ -1273,7 +1245,6 @@ class CI_Image_lib { /** * Dynamically outputs an image * - * @access public * @param resource * @return void */ @@ -1309,7 +1280,6 @@ class CI_Image_lib { * This function lets us re-proportion the width/height * if users choose to maintain the aspect ratio when resizing. * - * @access public * @return void */ public function image_reproportion() @@ -1350,7 +1320,6 @@ class CI_Image_lib { * * A helper function that gets info about the file * - * @access public * @param string * @return mixed */ @@ -1369,26 +1338,24 @@ class CI_Image_lib { } $vals = getimagesize($path); - $types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png'); - - $mime = (isset($types[$vals['2']])) ? 'image/'.$types[$vals['2']] : 'image/jpg'; + $mime = (isset($types[$vals[2]])) ? 'image/'.$types[$vals[2]] : 'image/jpg'; if ($return == TRUE) { - $v['width'] = $vals['0']; - $v['height'] = $vals['1']; - $v['image_type'] = $vals['2']; - $v['size_str'] = $vals['3']; - $v['mime_type'] = $mime; - - return $v; + return array( + 'width' => $vals[0], + 'height' => $vals[1], + 'image_type' => $vals[2], + 'size_str' => $vals[3], + 'mime_type' => $mime + ); } - $this->orig_width = $vals['0']; - $this->orig_height = $vals['1']; - $this->image_type = $vals['2']; - $this->size_str = $vals['3']; + $this->orig_width = $vals[0]; + $this->orig_height = $vals[1]; + $this->image_type = $vals[2]; + $this->size_str = $vals[3]; $this->mime_type = $mime; return TRUE; @@ -1410,7 +1377,6 @@ class CI_Image_lib { * 'new_height' => '' * ); * - * @access public * @param array * @return array */ @@ -1458,7 +1424,6 @@ class CI_Image_lib { * $array['ext'] = '.jpg'; * $array['name'] = 'my.cool'; * - * @access public * @param array * @return array */ @@ -1475,17 +1440,16 @@ class CI_Image_lib { /** * Is GD Installed? * - * @access public * @return bool */ public function gd_loaded() { if ( ! extension_loaded('gd')) { - if ( ! dl('gd.so')) - { - return FALSE; - } + /* As it is stated in the PHP manual, dl() is not always available + * and even if so - it could generate an E_WARNING message on failure + */ + return (function_exists('dl') AND @dl('gd.so')); } return TRUE; @@ -1496,7 +1460,6 @@ class CI_Image_lib { /** * Get GD version * - * @access public * @return mixed */ public function gd_version() @@ -1517,7 +1480,6 @@ class CI_Image_lib { /** * Set error message * - * @access public * @param string * @return void */ @@ -1549,7 +1511,6 @@ class CI_Image_lib { /** * Show error messages * - * @access public * @param string * @return string */ |