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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');/*** CodeIgniter** An open source application development framework for PHP 4.3.2 or newer** @package CodeIgniter* @author ExpressionEngine Dev Team* @copyright Copyright (c) 2008, EllisLab, Inc.* @license http://codeigniter.com/user_guide/license.html* @link http://codeigniter.com* @since Version 1.0* @filesource*/// ------------------------------------------------------------------------/*** Image Manipulation class** @package CodeIgniter* @subpackage Libraries* @category Image_lib* @author ExpressionEngine Dev Team* @link http://codeigniter.com/user_guide/libraries/image_lib.html*/class CI_Image_lib {var $image_library = 'gd2'; // Can be: imagemagick, netpbm, gd, gd2var $library_path = '';var $dynamic_output = FALSE; // Whether to send to browser or write to diskvar $source_image = '';var $new_image = '';var $width = '';var $height = '';var $quality = '90';var $create_thumb = FALSE;var $thumb_marker = '_thumb';var $maintain_ratio = TRUE; // Whether to maintain aspect ratio when resizing or use hard valuesvar $master_dim = 'auto'; // auto, height, or width. Determines what to use as the master dimensionvar $rotation_angle = '';var $x_axis = '';var $y_axis = '';// Watermark Varsvar $wm_text = ''; // Watermark text if graphic is not usedvar $wm_type = 'text'; // Type of watermarking. Options: text/overlayvar $wm_x_transp = 4;var $wm_y_transp = 4;var $wm_overlay_path = ''; // Watermark image pathvar $wm_font_path = ''; // TT fontvar $wm_font_size = 17; // Font size (different versions of GD will either use points or pixels)var $wm_vrt_alignment = 'B'; // Vertical alignment: T M Bvar $wm_hor_alignment = 'C'; // Horizontal alignment: L R Cvar $wm_padding = 0; // Padding around textvar $wm_hor_offset = 0; // Lets you push text to the rightvar $wm_vrt_offset = 0; // Lets you push text downvar $wm_font_color = '#ffffff'; // Text colorvar $wm_shadow_color = ''; // Dropshadow colorvar $wm_shadow_distance = 2; // Dropshadow distancevar $wm_opacity = 50; // Image opacity: 1 - 100 Only works with image// Private Varsvar $source_folder = '';var $dest_folder = '';var $mime_type = '';var $orig_width = '';var $orig_height = '';var $image_type = '';var $size_str = '';var $full_src_path = '';var $full_dst_path = '';var $create_fnc = 'imagecreatetruecolor';var $copy_fnc = 'imagecopyresampled';var $error_msg = array();var $wm_use_drop_shadow = FALSE;var $wm_use_truetype = FALSE;/*** Constructor** @access public* @param string* @return void*/function CI_Image_lib($props = array()){if (count($props) > 0){$this->initialize($props);}log_message('debug', "Image Lib Class Initialized");}// --------------------------------------------------------------------/*** Initialize image properties** Resets values in case this class is used in a loop** @access public* @return void*/function clear(){$props = array('source_folder', 'dest_folder', 'source_image', 'full_src_path', 'full_dst_path', 'new_image', 'image_type', 'size_str', 'quality', 'orig_width', 'orig_height', 'rotation_angle', 'x_axis', 'y_axis', 'create_fnc', 'copy_fnc', 'wm_overlay_path', 'wm_use_truetype', 'dynamic_output', 'wm_font_size', 'wm_text', 'wm_vrt_alignment', 'wm_hor_alignment', 'wm_padding', 'wm_hor_offset', 'wm_vrt_offset', 'wm_font_color', 'wm_use_drop_shadow', 'wm_shadow_color', 'wm_shadow_distance', 'wm_opacity');foreach ($props as $val){$this->$val = '';}// special consideration for master_dim$this->master_dim = 'auto';}// --------------------------------------------------------------------/*** initialize image preferences** @access public* @param array* @return void*/function initialize($props = array()){/** Convert array elements into class variables*/if (count($props) > 0){foreach ($props as $key => $val){$this->$key = $val;}}/** Is there a source image?** If not, there's no reason to continue**/if ($this->source_image == ''){$this->set_error('imglib_source_image_required');return FALSE;}/** Is getimagesize() Available?** We use it to determine the image properties (width/height).* Note: We need to figure out how to determine image* properties using ImageMagick and NetPBM**/if ( ! function_exists('getimagesize')){$this->set_error('imglib_gd_required_for_props');return FALSE;}$this->image_library = strtolower($this->image_library);/** Set the full server path** The source image may or may not contain a path.* Either way, we'll try use realpath to generate the* full server path in order to more reliably read it.**/if (function_exists('realpath') AND @realpath($this->source_image) !== FALSE){$full_source_path = str_replace("\\", "/", realpath($this->source_image));}else{$full_source_path = $this->source_image;}$x = explode('/', $full_source_path);$this->source_image = end($x);$this->source_folder = str_replace($this->source_image, '', $full_source_path);// Set the Image Propertiesif ( ! $this->get_image_properties($this->source_folder.$this->source_image)){return FALSE;}/** Assign the "new" image name/path** If the user has set a "new_image" name it means* we are making a copy of the source image. If not* it means we are altering the original. We'll* set the destination filename and path accordingly.**/if ($this->new_image == ''){$this->dest_image = $this->source_image;$this->dest_folder = $this->source_folder;}else{if (strpos($this->new_image, '/') === FALSE){$this->dest_folder = $this->source_folder;$this->dest_image = $this->new_image;}else{if (function_exists('realpath') AND @realpath($this->new_image) !== FALSE){$full_dest_path = str_replace("\\", "/", realpath($this->new_image));}else{$full_dest_path = $this->new_image;}// Is there a file name?if ( ! preg_match("#\.(jpg|jpeg|gif|png)$#i", $full_dest_path)){$this->dest_folder = $full_dest_path.'/';$this->dest_image = $this->source_image;}else{$x = explode('/', $full_dest_path);$this->dest_image = end($x);$this->dest_folder = str_replace($this->dest_image, '', $full_dest_path);}}}/** Compile the finalized filenames/paths** We'll create two master strings containing the* full server path to the source image and the* full server path to the destination image.* We'll also split the destination image name* so we can insert the thumbnail marker if needed.**/if ($this->create_thumb === FALSE OR $this->thumb_marker == ''){$this->thumb_marker = '';}$xp = $this->explode_name($this->dest_image);$filename = $xp['name'];$file_ext = $xp['ext'];$this->full_src_path = $this->source_folder.$this->source_image;$this->full_dst_path = $this->dest_folder.$filename.$this->thumb_marker.$file_ext;/** Should we maintain image proportions?** When creating thumbs or copies, the target width/height* might not be in correct proportion with the source* image's width/height. We'll recalculate it here.**/if ($this->maintain_ratio === TRUE && ($this->width != '' AND $this->height != '')){$this->image_reproportion();}/** Was a width and height specified?** If the destination width/height was* not submitted we will use the values* from the actual file**/if ($this->width == '')$this->width = $this->orig_width;if ($this->height == '')$this->height = $this->orig_height;// Set the quality$this->quality = trim(str_replace("%", "", $this->quality));if ($this->quality == '' OR $this->quality == 0 OR ! is_numeric($this->quality))$this->quality = 90;// Set the x/y coordinates$this->x_axis = ($this->x_axis == '' OR ! is_numeric($this->x_axis)) ? 0 : $this->x_axis;$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));}if ($this->wm_shadow_color != ''){$this->wm_use_drop_shadow = TRUE;}if ($this->wm_font_path != ''){$this->wm_use_truetype = TRUE;}return TRUE;}// --------------------------------------------------------------------/*** Image Resize** This is a wrapper function that chooses the proper* resize function based on the protocol specified** @access public* @return bool*/function resize(){$protocol = 'image_process_'.$this->image_library;if (eregi("gd2$", $protocol)){$protocol = 'image_process_gd';}return $this->$protocol('resize');}// --------------------------------------------------------------------/*** Image Crop** This is a wrapper function that chooses the proper* cropping function based on the protocol specified** @access public* @return bool*/function crop(){$protocol = 'image_process_'.$this->image_library;if (eregi("gd2$", $protocol)){$protocol = 'image_process_gd';}return $this->$protocol('crop');}// --------------------------------------------------------------------/*** Image Rotate** This is a wrapper function that chooses the proper* rotation function based on the protocol specified** @access public* @return bool*/function rotate(){// Allowed rotation values$degs = array(90, 180, 270, 'vrt', 'hor');if ($this->rotation_angle == '' OR ! in_array($this->rotation_angle, $degs, TRUE)){$this->set_error('imglib_rotation_angle_required');return FALSE;}// Reassign the width and heightif ($this->rotation_angle == 90 OR $this->rotation_angle == 270){$this->width = $this->orig_height;$this->height = $this->orig_width;}else{$this->width = $this->orig_width;$this->height = $this->orig_height;}// Choose resizing functionif ($this->image_library == 'imagemagick' OR $this->image_library == 'netpbm'){$protocol = 'image_process_'.$this->image_library;return $this->$protocol('rotate');}if ($this->rotation_angle == 'hor' OR $this->rotation_angle == 'vrt'){return $this->image_mirror_gd();}else{return $this->image_rotate_gd();}}// --------------------------------------------------------------------/*** Image Process Using GD/GD2** This function will resize or crop** @access public* @param string* @return bool*/function image_process_gd($action = 'resize'){$v2_override = FALSE;// If the target width/height match the source, AND if the new file name is not equal to the old file name// we'll simply make a copy of the original with the new name... assuming dynamic rendering is off.if ($this->dynamic_output === FALSE){if ($this->orig_width == $this->width AND $this->orig_height == $this->height){if ($this->source_image != $this->new_image){if (@copy($this->full_src_path, $this->full_dst_path)){@chmod($this->full_dst_path, DIR_WRITE_MODE);}}return TRUE;}}// Let's set up our values based on the actionif ($action == 'crop'){// Reassign the source width/height if cropping$this->orig_width = $this->width;$this->orig_height = $this->height;// GD 2.0 has a cropping bug so we'll test for itif ($this->gd_version() !== FALSE){$gd_version = str_replace('0', '', $this->gd_version());$v2_override = ($gd_version == 2) ? TRUE : FALSE;}}else{// If resizing the x/y axis must be zero$this->x_axis = 0;$this->y_axis = 0;}// Create the image handleif ( ! ($src_img = $this->image_create_gd())){return FALSE;}// Create The Image//// old conditional which users report cause problems with shared GD libs who report themselves as "2.0 or greater"// it appears that this is no longer the issue that it was in 2004, so we've removed it, retaining it in the comment// below should that ever prove inaccurate.//// if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor') AND $v2_override == FALSE)if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor')){$create = 'imagecreatetruecolor';$copy = 'imagecopyresampled';}else{$create = 'imagecreate';$copy = 'imagecopyresized';}$dst_img = $create($this->width, $this->height);$copy($dst_img, $src_img, 0, 0, $this->x_axis, $this->y_axis, $this->width, $this->height, $this->orig_width, $this->orig_height);// Show the imageif ($this->dynamic_output == TRUE){$this->image_display_gd($dst_img);}else{// Or save itif ( ! $this->image_save_gd($dst_img)){return FALSE;}}// Kill the file handlesimagedestroy($dst_img);imagedestroy($src_img);// Set the file to 777@chmod($this->full_dst_path, DIR_WRITE_MODE);return TRUE;}// --------------------------------------------------------------------/*** Image Process Using ImageMagick** This function will resize, crop or rotate** @access public* @param string* @return bool*/function image_process_imagemagick($action = 'resize'){// Do we have a vaild library path?if ($this->library_path == ''){$this->set_error('imglib_libpath_invalid');return FALSE;}if ( ! eregi("convert$", $this->library_path)){if ( ! eregi("/$", $this->library_path)) $this->library_path .= "/";$this->library_path .= 'convert';}// Execute the command$cmd = $this->library_path." -quality ".$this->quality;if ($action == 'crop'){$cmd .= " -crop ".$this->width."x".$this->height."+".$this->x_axis."+".$this->y_axis." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1";}elseif ($action == 'rotate'){switch ($this->rotation_angle){case 'hor' : $angle = '-flop';break;case 'vrt' : $angle = '-flip';break;default : $angle = '-rotate '.$this->rotation_angle;break;}$cmd .= " ".$angle." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1";}else // Resize{$cmd .= " -resize ".$this->width."x".$this->height." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1";}$retval = 1;@exec($cmd, $output, $retval);// Did it work?if ($retval > 0){$this->set_error('imglib_image_process_failed');return FALSE;}// Set the file to 777@chmod($this->full_dst_path, DIR_WRITE_MODE);return TRUE;}// --------------------------------------------------------------------/*** Image Process Using NetPBM** This function will resize, crop or rotate** @access public* @param string* @return bool*/function image_process_netpbm($action = 'resize'){if ($this->library_path == ''){$this->set_error('imglib_libpath_invalid');return FALSE;}// Build the resizing commandswitch ($this->image_type){case 1 :$cmd_in = 'giftopnm';$cmd_out = 'ppmtogif';break;case 2 :$cmd_in = 'jpegtopnm';$cmd_out = 'ppmtojpeg';break;case 3 :$cmd_in = 'pngtopnm';$cmd_out = 'ppmtopng';break;}if ($action == 'crop'){$cmd_inner = 'pnmcut -left '.$this->x_axis.' -top '.$this->y_axis.' -width '.$this->width.' -height '.$this->height;}elseif ($action == 'rotate'){switch ($this->rotation_angle){case 90 : $angle = 'r270';break;case 180 : $angle = 'r180';break;case 270 : $angle = 'r90';break;case 'vrt' : $angle = 'tb';break;case 'hor' : $angle = 'lr';break;}$cmd_inner = 'pnmflip -'.$angle.' ';}else // Resize{$cmd_inner = 'pnmscale -xysize '.$this->width.' '.$this->height;}$cmd = $this->library_path.$cmd_in.' '.$this->full_src_path.' | '.$cmd_inner.' | '.$cmd_out.' > '.$this->dest_folder.'netpbm.tmp';$retval = 1;@exec($cmd, $output, $retval);// Did it work?if ($retval > 0){$this->set_error('imglib_image_process_failed');return FALSE;}// With NetPBM we have to create a temporary image.// If you try manipulating the original it fails so// we have to rename the temp file.copy ($this->dest_folder.'netpbm.tmp', $this->full_dst_path);unlink ($this->dest_folder.'netpbm.tmp');@chmod($this->full_dst_path, DIR_WRITE_MODE);return TRUE;}// --------------------------------------------------------------------/*** Image Rotate Using GD** @access public* @return bool*/function image_rotate_gd(){// Is Image Rotation Supported?// this function is only supported as of PHP 4.3if ( ! function_exists('imagerotate')){$this->set_error('imglib_rotate_unsupported');return FALSE;}// Create the image handleif ( ! ($src_img = $this->image_create_gd())){return FALSE;}// Set the background color// This won't work with transparent PNG files so we are// going to have to figure out how to determine the color// of the alpha channel in a future release.$white = imagecolorallocate($src_img, 255, 255, 255);// Rotate it!$dst_img = imagerotate($src_img, $this->rotation_angle, $white);// Save the Imageif ($this->dynamic_output == TRUE){$this->image_display_gd($dst_img);}else{// Or save itif ( ! $this->image_save_gd($dst_img)){return FALSE;}}// Kill the file handlesimagedestroy($dst_img);imagedestroy($src_img);// Set the file to 777@chmod($this->full_dst_path, DIR_WRITE_MODE);return true;}// --------------------------------------------------------------------/*** Create Mirror Image using GD** This function will flip horizontal or vertical** @access public* @return bool*/function image_mirror_gd(){if ( ! $src_img = $this->image_create_gd()){return FALSE;}$width = $this->orig_width;$height = $this->orig_height;if ($this->rotation_angle == 'hor'){for ($i = 0; $i < $height; $i++){$left = 0;$right = $width-1;while ($left < $right){$cl = imagecolorat($src_img, $left, $i);$cr = imagecolorat($src_img, $right, $i);imagesetpixel($src_img, $left, $i, $cr);imagesetpixel($src_img, $right, $i, $cl);$left++;$right--;}}}else{for ($i = 0; $i < $width; $i++){$top = 0;$bot = $height-1;while ($top < $bot){$ct = imagecolorat($src_img, $i, $top);$cb = imagecolorat($src_img, $i, $bot);imagesetpixel($src_img, $i, $top, $cb);imagesetpixel($src_img, $i, $bot, $ct);$top++;$bot--;}}}// Show the imageif ($this->dynamic_output == TRUE){$this->image_display_gd($src_img);}else{// Or save itif ( ! $this->image_save_gd($src_img)){return FALSE;}}// Kill the file handlesimagedestroy($src_img);// Set the file to 777@chmod($this->full_dst_path, DIR_WRITE_MODE);return TRUE;}// --------------------------------------------------------------------/*** Image Watermark** This is a wrapper function that chooses the type* of watermarking based on the specified preference.** @access public* @param string* @return bool*/function watermark(){if ($this->wm_type == 'overlay'){return $this->overlay_watermark();}else{return $this->text_watermark();}}// --------------------------------------------------------------------/*** Watermark - Graphic Version** @access public* @return bool*/function overlay_watermark(){if ( ! function_exists('imagecolortransparent')){$this->set_error('imglib_gd_required');return FALSE;}// Fetch source image properties$this->get_image_properties();// Fetch watermark image properties$props = $this->get_image_properties($this->wm_overlay_path, TRUE);$wm_img_type = $props['image_type'];$wm_width = $props['width'];$wm_height = $props['height'];// Create two image resources$wm_img = $this->image_create_gd($this->wm_overlay_path, $wm_img_type);$src_img = $this->image_create_gd($this->full_src_path);// Reverse the offset if necessary// When the image is positioned at the bottom// we don't want the vertical offset to push it// further down. We want the reverse, so we'll// invert the offset. Same with the horizontal// offset when the image is at the right$this->wm_vrt_alignment = strtoupper(substr($this->wm_vrt_alignment, 0, 1));$this->wm_hor_alignment = strtoupper(substr($this->wm_hor_alignment, 0, 1));if ($this->wm_vrt_alignment == 'B')$this->wm_vrt_offset = $this->wm_vrt_offset * -1;if ($this->wm_hor_alignment == 'R')$this->wm_hor_offset = $this->wm_hor_offset * -1;// Set the base x and y axis values$x_axis = $this->wm_hor_offset + $this->wm_padding;$y_axis = $this->wm_vrt_offset + $this->wm_padding;// Set the vertical positionswitch ($this->wm_vrt_alignment){case 'T':break;case 'M': $y_axis += ($this->orig_height / 2) - ($wm_height / 2);break;case 'B': $y_axis += $this->orig_height - $wm_height;break;}// Set the horizontal positionswitch ($this->wm_hor_alignment){case 'L':break;case 'C': $x_axis += ($this->orig_width / 2) - ($wm_width / 2);break;case 'R': $x_axis += $this->orig_width - $wm_width;break;}// Build the finalized imageif ($wm_img_type == 3 AND function_exists('imagealphablending')){@imagealphablending($src_img, TRUE);}// Set RGB values for text and shadow$rgba = imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp);$alpha = ($rgba & 0x7F000000) >> 24;// make a best guess as to whether we're dealing with an image with alpha transparency or no/binary transparencyif ($alpha > 0){// copy the image directly, the image's alpha transparency being the sole determinant of blendingimagecopy($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height);}else{// set our RGB value from above to be transparent and merge the images with the specified opacityimagecolortransparent($wm_img, imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp));imagecopymerge($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height, $this->wm_opacity);}// Output the imageif ($this->dynamic_output == TRUE){$this->image_display_gd($src_img);}else{if ( ! $this->image_save_gd($src_img)){return FALSE;}}imagedestroy($src_img);imagedestroy($wm_img);return TRUE;}// --------------------------------------------------------------------/*** Watermark - Text Version** @access public* @return bool*/function text_watermark(){if ( ! ($src_img = $this->image_create_gd())){return FALSE;}if ($this->wm_use_truetype == TRUE AND ! file_exists($this->wm_font_path)){$this->set_error('imglib_missing_font');return FALSE;}// 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, $B2);// Reverse the vertical offset// When the image is positioned at the bottom// we don't want the vertical offset to push it// further down. We want the reverse, so we'll// invert the offset. Note: The horizontal// offset flips itself automaticallyif ($this->wm_vrt_alignment == 'B')$this->wm_vrt_offset = $this->wm_vrt_offset * -1;if ($this->wm_hor_alignment == 'R')$this->wm_hor_offset = $this->wm_hor_offset * -1;// Set font width and height// These are calculated differently depending on// whether we are using the true type font or notif ($this->wm_use_truetype == TRUE){if ($this->wm_font_size == '')$this->wm_font_size = '17';$fontwidth = $this->wm_font_size-($this->wm_font_size/4);$fontheight = $this->wm_font_size;$this->wm_vrt_offset += $this->wm_font_size;}else{$fontwidth = imagefontwidth($this->wm_font_size);$fontheight = imagefontheight($this->wm_font_size);}// Set base X and Y axis values$x_axis = $this->wm_hor_offset + $this->wm_padding;$y_axis = $this->wm_vrt_offset + $this->wm_padding;// Set verticle alignmentif ($this->wm_use_drop_shadow == FALSE)$this->wm_shadow_distance = 0;$this->wm_vrt_alignment = strtoupper(substr($this->wm_vrt_alignment, 0, 1));$this->wm_hor_alignment = strtoupper(substr($this->wm_hor_alignment, 0, 1));switch ($this->wm_vrt_alignment){case "T" :break;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));break;}$x_shad = $x_axis + $this->wm_shadow_distance;$y_shad = $y_axis + $this->wm_shadow_distance;// Set horizontal alignmentswitch ($this->wm_hor_alignment){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));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);break;}// Add the text to the source imageif ($this->wm_use_truetype){if ($this->wm_use_drop_shadow)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)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, $txt_color);}// Output the final imageif ($this->dynamic_output == TRUE){$this->image_display_gd($src_img);}else{$this->image_save_gd($src_img);}imagedestroy($src_img);return TRUE;}// --------------------------------------------------------------------/*** Create Image - GD** This simply creates an image resource handle* based on the type of image being processed** @access public* @param string* @return resource*/function image_create_gd($path = '', $image_type = ''){if ($path == '')$path = $this->full_src_path;if ($image_type == '')$image_type = $this->image_type;switch ($image_type){case 1 :if ( ! function_exists('imagecreatefromgif')){$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_gif_not_supported'));return FALSE;}return imagecreatefromgif($path);break;case 2 :if ( ! function_exists('imagecreatefromjpeg')){$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_jpg_not_supported'));return FALSE;}return imagecreatefromjpeg($path);break;case 3 :if ( ! function_exists('imagecreatefrompng')){$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_png_not_supported'));return FALSE;}return imagecreatefrompng($path);break;}$this->set_error(array('imglib_unsupported_imagecreate'));return FALSE;}// --------------------------------------------------------------------/*** Write image file to disk - GD** Takes an image resource as input and writes the file* to the specified destination** @access public* @param resource* @return bool*/function image_save_gd($resource){switch ($this->image_type){case 1 :if ( ! function_exists('imagegif')){$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_gif_not_supported'));return FALSE;}@imagegif($resource, $this->full_dst_path);break;case 2 :if ( ! function_exists('imagejpeg')){$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_jpg_not_supported'));return FALSE;}if (phpversion() == '4.4.1'){@touch($this->full_dst_path); // PHP 4.4.1 bug #35060 - workaround}@imagejpeg($resource, $this->full_dst_path, $this->quality);break;case 3 :if ( ! function_exists('imagepng')){$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_png_not_supported'));return FALSE;}@imagepng($resource, $this->full_dst_path);break;default :$this->set_error(array('imglib_unsupported_imagecreate'));return FALSE;break;}return TRUE;}// --------------------------------------------------------------------/*** Dynamically outputs an image** @access public* @param resource* @return void*/function image_display_gd($resource){header("Content-Disposition: filename={$this->source_image};");header("Content-Type: {$this->mime_type}");header('Content-Transfer-Encoding: binary');header('Last-Modified: '.gmdate('D, d M Y H:i:s', time()).' GMT');switch ($this->image_type){case 1 : imagegif($resource);break;case 2 : imagejpeg($resource, '', $this->quality);break;case 3 : imagepng($resource);break;default : echo 'Unable to display the image';break;}}// --------------------------------------------------------------------/*** Re-proportion Image Width/Height** When creating thumbs, the desired width/height* can end up warping the image due to an incorrect* ratio between the full-sized image and the thumb.** This function lets us re-proportion the width/height* if users choose to maintain the aspect ratio when resizing.** @access public* @return void*/function image_reproportion(){if ( ! is_numeric($this->width) OR ! is_numeric($this->height) OR $this->width == 0 OR $this->height == 0)return;if ( ! is_numeric($this->orig_width) OR ! is_numeric($this->orig_height) OR $this->orig_width == 0 OR $this->orig_height == 0)return;$new_width = ceil($this->orig_width*$this->height/$this->orig_height);$new_height = ceil($this->width*$this->orig_height/$this->orig_width);$ratio = (($this->orig_height/$this->orig_width) - ($this->height/$this->width));if ($this->master_dim != 'width' AND $this->master_dim != 'height'){$this->master_dim = ($ratio < 0) ? 'width' : 'height';}if (($this->width != $new_width) AND ($this->height != $new_height)){if ($this->master_dim == 'height'){$this->width = $new_width;}else{$this->height = $new_height;}}}// --------------------------------------------------------------------/*** Get image properties** A helper function that gets info about the file** @access public* @param string* @return mixed*/function get_image_properties($path = '', $return = FALSE){// For now we require GD but we should// find a way to determine this using IM or NetPBMif ($path == '')$path = $this->full_src_path;if ( ! file_exists($path)){$this->set_error('imglib_invalid_path');return FALSE;}$vals = @getimagesize($path);$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png');$mime = (isset($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 $v;}$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;}// --------------------------------------------------------------------/*** Size calculator** This function takes a known width x height and* recalculates it to a new size. Only one* new variable needs to be known** $props = array(* 'width' => $width,* 'height' => $height,* 'new_width' => 40,* 'new_height' => ''* );** @access public* @param array* @return array*/function size_calculator($vals){if ( ! is_array($vals))return;$allowed = array('new_width', 'new_height', 'width', 'height');foreach ($allowed as $item){if ( ! isset($vals[$item]) OR $vals[$item] == '')$vals[$item] = 0;}if ($vals['width'] == 0 OR $vals['height'] == 0){return $vals;}if ($vals['new_width'] == 0){$vals['new_width'] = ceil($vals['width']*$vals['new_height']/$vals['height']);}elseif ($vals['new_height'] == 0){$vals['new_height'] = ceil($vals['new_width']*$vals['height']/$vals['width']);}return $vals;}// --------------------------------------------------------------------/*** Explode source_image** This is a helper function that extracts the extension* from the source_image. This function lets us deal with* source_images with multiple periods, like: my.cool.jpg* It returns an associative array with two elements:* $array['ext'] = '.jpg';* $array['name'] = 'my.cool';** @access public* @param array* @return array*/function explode_name($source_image){$x = explode('.', $source_image);$ret['ext'] = '.'.end($x);$name = '';$ct = count($x)-1;for ($i = 0; $i < $ct; $i++){$name .= $x[$i];if ($i < ($ct - 1)){$name .= '.';}}$ret['name'] = $name;return $ret;}// --------------------------------------------------------------------/*** Is GD Installed?** @access public* @return bool*/function gd_loaded(){if ( ! extension_loaded('gd')){if ( ! dl('gd.so')){return FALSE;}}return TRUE;}// --------------------------------------------------------------------/*** Get GD version** @access public* @return mixed*/function gd_version(){if (function_exists('gd_info')){$gd_version = @gd_info();$gd_version = preg_replace("/\D/", "", $gd_version['GD Version']);return $gd_version;}return FALSE;}// --------------------------------------------------------------------/*** Set error message** @access public* @param string* @return void*/function set_error($msg){$CI =& get_instance();$CI->lang->load('imglib');if (is_array($msg)){foreach ($msg as $val){$msg = ($CI->lang->line($val) == FALSE) ? $val : $CI->lang->line($val);$this->error_msg[] = $msg;log_message('error', $msg);}}else{$msg = ($CI->lang->line($msg) == FALSE) ? $msg : $CI->lang->line($msg);$this->error_msg[] = $msg;log_message('error', $msg);}}// --------------------------------------------------------------------/*** Show error messages** @access public* @param string* @return string*/function display_errors($open = '<p>', $close = '</p>'){$str = '';foreach ($this->error_msg as $val){$str .= $open.$val.$close;}return $str;}}// END Image_lib Class/* End of file Image_lib.php *//* Location: ./system/libraries/Image_lib.php */