corrected a few docblock comments to accurately reflect return values
removed some unneeded whitespace
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index 67b7309..16201ee 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -1,1546 +1,1548 @@
-<?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, gd2
- var $library_path = '';
- var $dynamic_output = FALSE; // Whether to send to browser or write to disk
- var $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 values
- var $master_dim = 'auto'; // auto, height, or width. Determines what to use as the master dimension
- var $rotation_angle = '';
- var $x_axis = '';
- var $y_axis = '';
-
- // Watermark Vars
- var $wm_text = ''; // Watermark text if graphic is not used
- var $wm_type = 'text'; // Type of watermarking. Options: text/overlay
- var $wm_x_transp = 4;
- var $wm_y_transp = 4;
- var $wm_overlay_path = ''; // Watermark image path
- var $wm_font_path = ''; // TT font
- var $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 B
- var $wm_hor_alignment = 'C'; // Horizontal alignment: L R C
- var $wm_padding = 0; // Padding around text
- var $wm_hor_offset = 0; // Lets you push text to the right
- var $wm_vrt_offset = 0; // Lets you push text down
- var $wm_font_color = '#ffffff'; // Text color
- var $wm_shadow_color = ''; // Dropshadow color
- var $wm_shadow_distance = 2; // Dropshadow distance
- var $wm_opacity = 50; // Image opacity: 1 - 100 Only works with image
-
- // Private Vars
- var $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 Properties
- if ( ! $this->get_image_properties($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))
- {
- $this->set_error('imglib_rotation_angle_required');
- return FALSE;
- }
-
- // Reassign the width and height
- if ($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 = $this->orig_height;
- }
-
-
- // Choose resizing function
- if ($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 action
- if ($action == 'crop')
- {
- // Reassign the source width/height if cropping
- $this->orig_width = $this->width;
- $this->orig_height = $this->height;
-
- // GD 2.0 has a cropping bug so we'll test for it
- if ($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;
- $this->y_axis = 0;
- }
-
- // Create the image handle
- if ( ! ($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, $this->orig_height);
-
- // Show the image
- if ($this->dynamic_output == TRUE)
- {
- $this->image_display_gd($dst_img);
- }
- else
- {
- // Or save it
- if ( ! $this->image_save_gd($dst_img))
- {
- return FALSE;
- }
- }
-
- // Kill the file handles
- imagedestroy($dst_img);
- imagedestroy($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 == '')
- {
- $this->set_error('imglib_libpath_invalid');
- return FALSE;
- }
-
- // Build the resizing command
- switch ($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 4.3
- if ( ! function_exists('imagerotate'))
- {
- $this->set_error('imglib_rotate_unsupported');
- return FALSE;
- }
-
- // Create the image handle
- if ( ! ($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, $white);
-
- // Save the Image
- if ($this->dynamic_output == TRUE)
- {
- $this->image_display_gd($dst_img);
- }
- else
- {
- // Or save it
- if ( ! $this->image_save_gd($dst_img))
- {
- return FALSE;
- }
- }
-
- // Kill the file handles
- imagedestroy($dst_img);
- imagedestroy($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++;
- $bot--;
- }
- }
- }
-
- // Show the image
- if ($this->dynamic_output == TRUE)
- {
- $this->image_display_gd($src_img);
- }
- else
- {
- // Or save it
- if ( ! $this->image_save_gd($src_img))
- {
- return FALSE;
- }
- }
-
- // Kill the file handles
- imagedestroy($src_img);
-
- // Set the file to 777
- @chmod($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 + $this->wm_padding;
-
- // Set the vertical position
- switch ($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 - $wm_height;
- break;
- }
-
- // Set the horizontal position
- switch ($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 - $wm_width;
- break;
- }
-
- // Build the finalized image
- if ($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 transparency
- if ($alpha > 0)
- {
- // copy the image directly, the image's alpha transparency being the sole determinant of blending
- imagecopy($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height);
- }
- else
- {
- // set our RGB value from above to be transparent and merge the images with the specified opacity
- imagecolortransparent($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, $this->wm_opacity);
- }
-
- // Output the image
- if ($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, $B2);
-
- // Reverse the vertical offset
- // When the image is positioned at the bottom
- // we don't want the vertical offset to push it
- // further down. We want the reverse, so we'll
- // invert the offset. Note: The horizontal
- // offset flips itself automatically
-
- if ($this->wm_vrt_alignment == 'B')
- $this->wm_vrt_offset = $this->wm_vrt_offset * -1;
-
- if ($this->wm_hor_alignment == 'R')
- $this->wm_hor_offset = $this->wm_hor_offset * -1;
-
- // Set font width and height
- // These are calculated differently depending on
- // whether we are using the true type font or not
- if ($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 + $this->wm_padding;
-
- // Set verticle alignment
- if ($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 + $this->wm_shadow_distance;
-
- // Set horizontal alignment
- switch ($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 image
- if ($this->wm_use_truetype)
- {
- if ($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, $txt_color);
- }
-
- // Output the final image
- if ($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 = '', $return = FALSE)
- {
- // For now we require GD but we should
- // find a way to determine this using IM or NetPBM
-
- if ($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 */
+<?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, gd2
+ var $library_path = '';
+ var $dynamic_output = FALSE; // Whether to send to browser or write to disk
+ var $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 values
+ var $master_dim = 'auto'; // auto, height, or width. Determines what to use as the master dimension
+ var $rotation_angle = '';
+ var $x_axis = '';
+ var $y_axis = '';
+
+ // Watermark Vars
+ var $wm_text = ''; // Watermark text if graphic is not used
+ var $wm_type = 'text'; // Type of watermarking. Options: text/overlay
+ var $wm_x_transp = 4;
+ var $wm_y_transp = 4;
+ var $wm_overlay_path = ''; // Watermark image path
+ var $wm_font_path = ''; // TT font
+ var $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 B
+ var $wm_hor_alignment = 'C'; // Horizontal alignment: L R C
+ var $wm_padding = 0; // Padding around text
+ var $wm_hor_offset = 0; // Lets you push text to the right
+ var $wm_vrt_offset = 0; // Lets you push text down
+ var $wm_font_color = '#ffffff'; // Text color
+ var $wm_shadow_color = ''; // Dropshadow color
+ var $wm_shadow_distance = 2; // Dropshadow distance
+ var $wm_opacity = 50; // Image opacity: 1 - 100 Only works with image
+
+ // Private Vars
+ var $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
+ $this->master_dim = 'auto';
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * initialize image preferences
+ *
+ * @access public
+ * @param array
+ * @return bool
+ */
+ function initialize($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 Properties
+ if ( ! $this->get_image_properties($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))
+ {
+ $this->set_error('imglib_rotation_angle_required');
+ return FALSE;
+ }
+
+ // Reassign the width and height
+ if ($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 = $this->orig_height;
+ }
+
+
+ // Choose resizing function
+ if ($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 action
+ if ($action == 'crop')
+ {
+ // Reassign the source width/height if cropping
+ $this->orig_width = $this->width;
+ $this->orig_height = $this->height;
+
+ // GD 2.0 has a cropping bug so we'll test for it
+ if ($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;
+ $this->y_axis = 0;
+ }
+
+ // Create the image handle
+ if ( ! ($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, $this->orig_height);
+
+ // Show the image
+ if ($this->dynamic_output == TRUE)
+ {
+ $this->image_display_gd($dst_img);
+ }
+ else
+ {
+ // Or save it
+ if ( ! $this->image_save_gd($dst_img))
+ {
+ return FALSE;
+ }
+ }
+
+ // Kill the file handles
+ imagedestroy($dst_img);
+ imagedestroy($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 == '')
+ {
+ $this->set_error('imglib_libpath_invalid');
+ return FALSE;
+ }
+
+ // Build the resizing command
+ switch ($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 4.3
+ if ( ! function_exists('imagerotate'))
+ {
+ $this->set_error('imglib_rotate_unsupported');
+ return FALSE;
+ }
+
+ // Create the image handle
+ if ( ! ($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, $white);
+
+ // Save the Image
+ if ($this->dynamic_output == TRUE)
+ {
+ $this->image_display_gd($dst_img);
+ }
+ else
+ {
+ // Or save it
+ if ( ! $this->image_save_gd($dst_img))
+ {
+ return FALSE;
+ }
+ }
+
+ // Kill the file handles
+ imagedestroy($dst_img);
+ imagedestroy($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++;
+ $bot--;
+ }
+ }
+ }
+
+ // Show the image
+ if ($this->dynamic_output == TRUE)
+ {
+ $this->image_display_gd($src_img);
+ }
+ else
+ {
+ // Or save it
+ if ( ! $this->image_save_gd($src_img))
+ {
+ return FALSE;
+ }
+ }
+
+ // Kill the file handles
+ imagedestroy($src_img);
+
+ // Set the file to 777
+ @chmod($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 + $this->wm_padding;
+
+ // Set the vertical position
+ switch ($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 - $wm_height;
+ break;
+ }
+
+ // Set the horizontal position
+ switch ($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 - $wm_width;
+ break;
+ }
+
+ // Build the finalized image
+ if ($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 transparency
+ if ($alpha > 0)
+ {
+ // copy the image directly, the image's alpha transparency being the sole determinant of blending
+ imagecopy($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height);
+ }
+ else
+ {
+ // set our RGB value from above to be transparent and merge the images with the specified opacity
+ imagecolortransparent($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, $this->wm_opacity);
+ }
+
+ // Output the image
+ if ($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, $B2);
+
+ // Reverse the vertical offset
+ // When the image is positioned at the bottom
+ // we don't want the vertical offset to push it
+ // further down. We want the reverse, so we'll
+ // invert the offset. Note: The horizontal
+ // offset flips itself automatically
+
+ if ($this->wm_vrt_alignment == 'B')
+ $this->wm_vrt_offset = $this->wm_vrt_offset * -1;
+
+ if ($this->wm_hor_alignment == 'R')
+ $this->wm_hor_offset = $this->wm_hor_offset * -1;
+
+ // Set font width and height
+ // These are calculated differently depending on
+ // whether we are using the true type font or not
+ if ($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 + $this->wm_padding;
+
+ // Set verticle alignment
+ if ($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 + $this->wm_shadow_distance;
+
+ // Set horizontal alignment
+ switch ($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 image
+ if ($this->wm_use_truetype)
+ {
+ if ($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, $txt_color);
+ }
+
+ // Output the final image
+ if ($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 = '', $return = FALSE)
+ {
+ // For now we require GD but we should
+ // find a way to determine this using IM or NetPBM
+
+ if ($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 */
\ No newline at end of file