bzr branch
http://gegoxaren.bato24.eu/bzr/lenasys/trunk
|
20.1.1
by galaxyAbstractor
* Added an simple admin panel to the codeviewer-cmssy stuff |
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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); |
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP 5.1.6 or newer
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*
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* @package CodeIgniter
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* @author ExpressionEngine Dev Team
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* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
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* @license http://codeigniter.com/user_guide/license.html
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* @link http://codeigniter.com
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* @since Version 1.0
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* @filesource
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*/
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// ------------------------------------------------------------------------
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/**
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* Image Manipulation class
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*
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* @package CodeIgniter
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* @subpackage Libraries
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* @category Image_lib
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* @author ExpressionEngine Dev Team
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* @link http://codeigniter.com/user_guide/libraries/image_lib.html
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*/
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class CI_Image_lib { |
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var $image_library = 'gd2'; // Can be: imagemagick, netpbm, gd, gd2 |
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var $library_path = ''; |
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var $dynamic_output = FALSE; // Whether to send to browser or write to disk |
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var $source_image = ''; |
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var $new_image = ''; |
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var $width = ''; |
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var $height = ''; |
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var $quality = '90'; |
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var $create_thumb = FALSE; |
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var $thumb_marker = '_thumb'; |
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var $maintain_ratio = TRUE; // Whether to maintain aspect ratio when resizing or use hard values |
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var $master_dim = 'auto'; // auto, height, or width. Determines what to use as the master dimension |
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var $rotation_angle = ''; |
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var $x_axis = ''; |
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var $y_axis = ''; |
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// Watermark Vars
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var $wm_text = ''; // Watermark text if graphic is not used |
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var $wm_type = 'text'; // Type of watermarking. Options: text/overlay |
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var $wm_x_transp = 4; |
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var $wm_y_transp = 4; |
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var $wm_overlay_path = ''; // Watermark image path |
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var $wm_font_path = ''; // TT font |
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var $wm_font_size = 17; // Font size (different versions of GD will either use points or pixels) |
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var $wm_vrt_alignment = 'B'; // Vertical alignment: T M B |
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var $wm_hor_alignment = 'C'; // Horizontal alignment: L R C |
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var $wm_padding = 0; // Padding around text |
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var $wm_hor_offset = 0; // Lets you push text to the right |
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var $wm_vrt_offset = 0; // Lets you push text down |
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var $wm_font_color = '#ffffff'; // Text color |
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var $wm_shadow_color = ''; // Dropshadow color |
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var $wm_shadow_distance = 2; // Dropshadow distance |
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var $wm_opacity = 50; // Image opacity: 1 - 100 Only works with image |
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// Private Vars
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var $source_folder = ''; |
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var $dest_folder = ''; |
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var $mime_type = ''; |
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var $orig_width = ''; |
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var $orig_height = ''; |
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var $image_type = ''; |
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var $size_str = ''; |
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var $full_src_path = ''; |
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var $full_dst_path = ''; |
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var $create_fnc = 'imagecreatetruecolor'; |
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var $copy_fnc = 'imagecopyresampled'; |
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var $error_msg = array(); |
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var $wm_use_drop_shadow = FALSE; |
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var $wm_use_truetype = FALSE; |
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/**
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* Constructor
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*
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* @param string
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* @return void
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*/
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public function __construct($props = array()) |
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{
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if (count($props) > 0) |
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{
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$this->initialize($props); |
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}
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log_message('debug', "Image Lib Class Initialized"); |
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}
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// --------------------------------------------------------------------
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/**
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* Initialize image properties
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*
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* Resets values in case this class is used in a loop
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*
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* @access public
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* @return void
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*/
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function clear() |
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{
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$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', 'width', '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'); |
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foreach ($props as $val) |
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{
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$this->$val = ''; |
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}
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// special consideration for master_dim
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$this->master_dim = 'auto'; |
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}
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// --------------------------------------------------------------------
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/**
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* initialize image preferences
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*
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* @access public
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* @param array
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* @return bool
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*/
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function initialize($props = array()) |
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{
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/*
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* Convert array elements into class variables
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*/
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if (count($props) > 0) |
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{
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foreach ($props as $key => $val) |
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{
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$this->$key = $val; |
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}
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}
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/*
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* Is there a source image?
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*
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* If not, there's no reason to continue
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*
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*/
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if ($this->source_image == '') |
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{
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$this->set_error('imglib_source_image_required'); |
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return FALSE; |
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}
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/*
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* Is getimagesize() Available?
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*
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* We use it to determine the image properties (width/height).
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* Note: We need to figure out how to determine image
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* properties using ImageMagick and NetPBM
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*
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*/
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if ( ! function_exists('getimagesize')) |
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{
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$this->set_error('imglib_gd_required_for_props'); |
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return FALSE; |
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}
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$this->image_library = strtolower($this->image_library); |
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/*
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* Set the full server path
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*
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* The source image may or may not contain a path.
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* Either way, we'll try use realpath to generate the
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* full server path in order to more reliably read it.
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*
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*/
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if (function_exists('realpath') AND @realpath($this->source_image) !== FALSE) |
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{
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$full_source_path = str_replace("\\", "/", realpath($this->source_image)); |
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}
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else
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{
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$full_source_path = $this->source_image; |
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}
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$x = explode('/', $full_source_path); |
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$this->source_image = end($x); |
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$this->source_folder = str_replace($this->source_image, '', $full_source_path); |
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// Set the Image Properties
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if ( ! $this->get_image_properties($this->source_folder.$this->source_image)) |
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{
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return FALSE; |
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}
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/*
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* Assign the "new" image name/path
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*
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* If the user has set a "new_image" name it means
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* we are making a copy of the source image. If not
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* it means we are altering the original. We'll
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* set the destination filename and path accordingly.
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*
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*/
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if ($this->new_image == '') |
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{
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$this->dest_image = $this->source_image; |
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$this->dest_folder = $this->source_folder; |
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}
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else
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{
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if (strpos($this->new_image, '/') === FALSE AND strpos($this->new_image, '\\') === FALSE) |
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{
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$this->dest_folder = $this->source_folder; |
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$this->dest_image = $this->new_image; |
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}
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else
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{
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if (function_exists('realpath') AND @realpath($this->new_image) !== FALSE) |
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{
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$full_dest_path = str_replace("\\", "/", realpath($this->new_image)); |
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}
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else
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{
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$full_dest_path = $this->new_image; |
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}
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// Is there a file name?
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if ( ! preg_match("#\.(jpg|jpeg|gif|png)$#i", $full_dest_path)) |
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{
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$this->dest_folder = $full_dest_path.'/'; |
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$this->dest_image = $this->source_image; |
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}
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else
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{
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$x = explode('/', $full_dest_path); |
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$this->dest_image = end($x); |
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$this->dest_folder = str_replace($this->dest_image, '', $full_dest_path); |
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}
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}
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}
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/*
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* Compile the finalized filenames/paths
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*
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* We'll create two master strings containing the
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* full server path to the source image and the
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* full server path to the destination image.
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* We'll also split the destination image name
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* so we can insert the thumbnail marker if needed.
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*
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*/
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if ($this->create_thumb === FALSE OR $this->thumb_marker == '') |
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{
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$this->thumb_marker = ''; |
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}
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$xp = $this->explode_name($this->dest_image); |
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$filename = $xp['name']; |
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$file_ext = $xp['ext']; |
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$this->full_src_path = $this->source_folder.$this->source_image; |
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$this->full_dst_path = $this->dest_folder.$filename.$this->thumb_marker.$file_ext; |
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/*
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* Should we maintain image proportions?
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*
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* When creating thumbs or copies, the target width/height
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* might not be in correct proportion with the source
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* image's width/height. We'll recalculate it here.
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*
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*/
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if ($this->maintain_ratio === TRUE && ($this->width != '' AND $this->height != '')) |
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{
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$this->image_reproportion(); |
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}
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/*
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* Was a width and height specified?
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*
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* If the destination width/height was
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* not submitted we will use the values
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* from the actual file
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*
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*/
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if ($this->width == '') |
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$this->width = $this->orig_width; |
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if ($this->height == '') |
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$this->height = $this->orig_height; |
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// Set the quality
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$this->quality = trim(str_replace("%", "", $this->quality)); |
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if ($this->quality == '' OR $this->quality == 0 OR ! is_numeric($this->quality)) |
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$this->quality = 90; |
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// Set the x/y coordinates
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$this->x_axis = ($this->x_axis == '' OR ! is_numeric($this->x_axis)) ? 0 : $this->x_axis; |
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$this->y_axis = ($this->y_axis == '' OR ! is_numeric($this->y_axis)) ? 0 : $this->y_axis; |
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// Watermark-related Stuff...
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if ($this->wm_font_color != '') |
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{
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if (strlen($this->wm_font_color) == 6) |
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{
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$this->wm_font_color = '#'.$this->wm_font_color; |
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}
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}
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if ($this->wm_shadow_color != '') |
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{
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if (strlen($this->wm_shadow_color) == 6) |
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{
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$this->wm_shadow_color = '#'.$this->wm_shadow_color; |
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}
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}
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if ($this->wm_overlay_path != '') |
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{
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$this->wm_overlay_path = str_replace("\\", "/", realpath($this->wm_overlay_path)); |
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}
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if ($this->wm_shadow_color != '') |
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{
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$this->wm_use_drop_shadow = TRUE; |
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}
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if ($this->wm_font_path != '') |
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{
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$this->wm_use_truetype = TRUE; |
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}
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return TRUE; |
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}
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// --------------------------------------------------------------------
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/**
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* Image Resize
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*
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* This is a wrapper function that chooses the proper
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* resize function based on the protocol specified
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*
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* @access public
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* @return bool
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*/
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function resize() |
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{
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$protocol = 'image_process_'.$this->image_library; |
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if (preg_match('/gd2$/i', $protocol)) |
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{
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$protocol = 'image_process_gd'; |
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}
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return $this->$protocol('resize'); |
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}
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// --------------------------------------------------------------------
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/**
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* Image Crop
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*
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* This is a wrapper function that chooses the proper
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* cropping function based on the protocol specified
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*
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* @access public
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* @return bool
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*/
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function crop() |
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{
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$protocol = 'image_process_'.$this->image_library; |
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if (preg_match('/gd2$/i', $protocol)) |
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{
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$protocol = 'image_process_gd'; |
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}
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return $this->$protocol('crop'); |
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}
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// --------------------------------------------------------------------
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/**
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* Image Rotate
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*
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* This is a wrapper function that chooses the proper
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* rotation function based on the protocol specified
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*
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* @access public
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* @return bool
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*/
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function rotate() |
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{
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// Allowed rotation values
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$degs = array(90, 180, 270, 'vrt', 'hor'); |
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if ($this->rotation_angle == '' OR ! in_array($this->rotation_angle, $degs)) |
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{
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$this->set_error('imglib_rotation_angle_required'); |
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return FALSE; |
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}
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// Reassign the width and height
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if ($this->rotation_angle == 90 OR $this->rotation_angle == 270) |
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{
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$this->width = $this->orig_height; |
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409 |
$this->height = $this->orig_width; |
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}
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else
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{
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$this->width = $this->orig_width; |
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$this->height = $this->orig_height; |
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}
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416 |
||
417 |
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// Choose resizing function
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if ($this->image_library == 'imagemagick' OR $this->image_library == 'netpbm') |
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420 |
{
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$protocol = 'image_process_'.$this->image_library; |
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422 |
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423 |
return $this->$protocol('rotate'); |
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424 |
}
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425 |
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426 |
if ($this->rotation_angle == 'hor' OR $this->rotation_angle == 'vrt') |
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427 |
{
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return $this->image_mirror_gd(); |
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429 |
}
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430 |
else
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431 |
{
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return $this->image_rotate_gd(); |
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}
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434 |
}
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435 |
||
436 |
// --------------------------------------------------------------------
|
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437 |
||
438 |
/**
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439 |
* Image Process Using GD/GD2
|
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440 |
*
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441 |
* This function will resize or crop
|
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442 |
*
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443 |
* @access public
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444 |
* @param string
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445 |
* @return bool
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446 |
*/
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447 |
function image_process_gd($action = 'resize') |
|
448 |
{
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449 |
$v2_override = FALSE; |
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450 |
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451 |
// If the target width/height match the source, AND if the new file name is not equal to the old file name
|
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452 |
// we'll simply make a copy of the original with the new name... assuming dynamic rendering is off.
|
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453 |
if ($this->dynamic_output === FALSE) |
|
454 |
{
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455 |
if ($this->orig_width == $this->width AND $this->orig_height == $this->height) |
|
456 |
{
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457 |
if ($this->source_image != $this->new_image) |
|
458 |
{
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459 |
if (@copy($this->full_src_path, $this->full_dst_path)) |
|
460 |
{
|
|
461 |
@chmod($this->full_dst_path, FILE_WRITE_MODE); |
|
462 |
}
|
|
463 |
}
|
|
464 |
||
465 |
return TRUE; |
|
466 |
}
|
|
467 |
}
|
|
468 |
||
469 |
// Let's set up our values based on the action
|
|
470 |
if ($action == 'crop') |
|
471 |
{
|
|
472 |
// Reassign the source width/height if cropping
|
|
473 |
$this->orig_width = $this->width; |
|
474 |
$this->orig_height = $this->height; |
|
475 |
||
476 |
// GD 2.0 has a cropping bug so we'll test for it
|
|
477 |
if ($this->gd_version() !== FALSE) |
|
478 |
{
|
|
479 |
$gd_version = str_replace('0', '', $this->gd_version()); |
|
480 |
$v2_override = ($gd_version == 2) ? TRUE : FALSE; |
|
481 |
}
|
|
482 |
}
|
|
483 |
else
|
|
484 |
{
|
|
485 |
// If resizing the x/y axis must be zero
|
|
486 |
$this->x_axis = 0; |
|
487 |
$this->y_axis = 0; |
|
488 |
}
|
|
489 |
||
490 |
// Create the image handle
|
|
491 |
if ( ! ($src_img = $this->image_create_gd())) |
|
492 |
{
|
|
493 |
return FALSE; |
|
494 |
}
|
|
495 |
||
496 |
// Create The Image
|
|
497 |
//
|
|
498 |
// old conditional which users report cause problems with shared GD libs who report themselves as "2.0 or greater"
|
|
499 |
// it appears that this is no longer the issue that it was in 2004, so we've removed it, retaining it in the comment
|
|
500 |
// below should that ever prove inaccurate.
|
|
501 |
//
|
|
502 |
// if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor') AND $v2_override == FALSE)
|
|
503 |
if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor')) |
|
504 |
{
|
|
505 |
$create = 'imagecreatetruecolor'; |
|
506 |
$copy = 'imagecopyresampled'; |
|
507 |
}
|
|
508 |
else
|
|
509 |
{
|
|
510 |
$create = 'imagecreate'; |
|
511 |
$copy = 'imagecopyresized'; |
|
512 |
}
|
|
513 |
||
514 |
$dst_img = $create($this->width, $this->height); |
|
515 |
||
516 |
if ($this->image_type == 3) // png we can actually preserve transparency |
|
517 |
{
|
|
518 |
imagealphablending($dst_img, FALSE); |
|
519 |
imagesavealpha($dst_img, TRUE); |
|
520 |
}
|
|
521 |
||
522 |
$copy($dst_img, $src_img, 0, 0, $this->x_axis, $this->y_axis, $this->width, $this->height, $this->orig_width, $this->orig_height); |
|
523 |
||
524 |
// Show the image
|
|
525 |
if ($this->dynamic_output == TRUE) |
|
526 |
{
|
|
527 |
$this->image_display_gd($dst_img); |
|
528 |
}
|
|
529 |
else
|
|
530 |
{
|
|
531 |
// Or save it
|
|
532 |
if ( ! $this->image_save_gd($dst_img)) |
|
533 |
{
|
|
534 |
return FALSE; |
|
535 |
}
|
|
536 |
}
|
|
537 |
||
538 |
// Kill the file handles
|
|
539 |
imagedestroy($dst_img); |
|
540 |
imagedestroy($src_img); |
|
541 |
||
542 |
// Set the file to 777
|
|
543 |
@chmod($this->full_dst_path, FILE_WRITE_MODE); |
|
544 |
||
545 |
return TRUE; |
|
546 |
}
|
|
547 |
||
548 |
// --------------------------------------------------------------------
|
|
549 |
||
550 |
/**
|
|
551 |
* Image Process Using ImageMagick
|
|
552 |
*
|
|
553 |
* This function will resize, crop or rotate
|
|
554 |
*
|
|
555 |
* @access public
|
|
556 |
* @param string
|
|
557 |
* @return bool
|
|
558 |
*/
|
|
559 |
function image_process_imagemagick($action = 'resize') |
|
560 |
{
|
|
561 |
// Do we have a vaild library path?
|
|
562 |
if ($this->library_path == '') |
|
563 |
{
|
|
564 |
$this->set_error('imglib_libpath_invalid'); |
|
565 |
return FALSE; |
|
566 |
}
|
|
567 |
||
568 |
if ( ! preg_match("/convert$/i", $this->library_path)) |
|
569 |
{
|
|
570 |
$this->library_path = rtrim($this->library_path, '/').'/'; |
|
571 |
||
572 |
$this->library_path .= 'convert'; |
|
573 |
}
|
|
574 |
||
575 |
// Execute the command
|
|
576 |
$cmd = $this->library_path." -quality ".$this->quality; |
|
577 |
||
578 |
if ($action == 'crop') |
|
579 |
{
|
|
580 |
$cmd .= " -crop ".$this->width."x".$this->height."+".$this->x_axis."+".$this->y_axis." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1"; |
|
581 |
}
|
|
582 |
elseif ($action == 'rotate') |
|
583 |
{
|
|
584 |
switch ($this->rotation_angle) |
|
585 |
{
|
|
586 |
case 'hor' : $angle = '-flop'; |
|
587 |
break; |
|
588 |
case 'vrt' : $angle = '-flip'; |
|
589 |
break; |
|
590 |
default : $angle = '-rotate '.$this->rotation_angle; |
|
591 |
break; |
|
592 |
}
|
|
593 |
||
594 |
$cmd .= " ".$angle." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1"; |
|
595 |
}
|
|
596 |
else // Resize |
|
597 |
{
|
|
598 |
$cmd .= " -resize ".$this->width."x".$this->height." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1"; |
|
599 |
}
|
|
600 |
||
601 |
$retval = 1; |
|
602 |
||
603 |
@exec($cmd, $output, $retval); |
|
604 |
||
605 |
// Did it work?
|
|
606 |
if ($retval > 0) |
|
607 |
{
|
|
608 |
$this->set_error('imglib_image_process_failed'); |
|
609 |
return FALSE; |
|
610 |
}
|
|
611 |
||
612 |
// Set the file to 777
|
|
613 |
@chmod($this->full_dst_path, FILE_WRITE_MODE); |
|
614 |
||
615 |
return TRUE; |
|
616 |
}
|
|
617 |
||
618 |
// --------------------------------------------------------------------
|
|
619 |
||
620 |
/**
|
|
621 |
* Image Process Using NetPBM
|
|
622 |
*
|
|
623 |
* This function will resize, crop or rotate
|
|
624 |
*
|
|
625 |
* @access public
|
|
626 |
* @param string
|
|
627 |
* @return bool
|
|
628 |
*/
|
|
629 |
function image_process_netpbm($action = 'resize') |
|
630 |
{
|
|
631 |
if ($this->library_path == '') |
|
632 |
{
|
|
633 |
$this->set_error('imglib_libpath_invalid'); |
|
634 |
return FALSE; |
|
635 |
}
|
|
636 |
||
637 |
// Build the resizing command
|
|
638 |
switch ($this->image_type) |
|
639 |
{
|
|
640 |
case 1 : |
|
641 |
$cmd_in = 'giftopnm'; |
|
642 |
$cmd_out = 'ppmtogif'; |
|
643 |
break; |
|
644 |
case 2 : |
|
645 |
$cmd_in = 'jpegtopnm'; |
|
646 |
$cmd_out = 'ppmtojpeg'; |
|
647 |
break; |
|
648 |
case 3 : |
|
649 |
$cmd_in = 'pngtopnm'; |
|
650 |
$cmd_out = 'ppmtopng'; |
|
651 |
break; |
|
652 |
}
|
|
653 |
||
654 |
if ($action == 'crop') |
|
655 |
{
|
|
656 |
$cmd_inner = 'pnmcut -left '.$this->x_axis.' -top '.$this->y_axis.' -width '.$this->width.' -height '.$this->height; |
|
657 |
}
|
|
658 |
elseif ($action == 'rotate') |
|
659 |
{
|
|
660 |
switch ($this->rotation_angle) |
|
661 |
{
|
|
662 |
case 90 : $angle = 'r270'; |
|
663 |
break; |
|
664 |
case 180 : $angle = 'r180'; |
|
665 |
break; |
|
666 |
case 270 : $angle = 'r90'; |
|
667 |
break; |
|
668 |
case 'vrt' : $angle = 'tb'; |
|
669 |
break; |
|
670 |
case 'hor' : $angle = 'lr'; |
|
671 |
break; |
|
672 |
}
|
|
673 |
||
674 |
$cmd_inner = 'pnmflip -'.$angle.' '; |
|
675 |
}
|
|
676 |
else // Resize |
|
677 |
{
|
|
678 |
$cmd_inner = 'pnmscale -xysize '.$this->width.' '.$this->height; |
|
679 |
}
|
|
680 |
||
681 |
$cmd = $this->library_path.$cmd_in.' '.$this->full_src_path.' | '.$cmd_inner.' | '.$cmd_out.' > '.$this->dest_folder.'netpbm.tmp'; |
|
682 |
||
683 |
$retval = 1; |
|
684 |
||
685 |
@exec($cmd, $output, $retval); |
|
686 |
||
687 |
// Did it work?
|
|
688 |
if ($retval > 0) |
|
689 |
{
|
|
690 |
$this->set_error('imglib_image_process_failed'); |
|
691 |
return FALSE; |
|
692 |
}
|
|
693 |
||
694 |
// With NetPBM we have to create a temporary image.
|
|
695 |
// If you try manipulating the original it fails so
|
|
696 |
// we have to rename the temp file.
|
|
697 |
copy ($this->dest_folder.'netpbm.tmp', $this->full_dst_path); |
|
698 |
unlink ($this->dest_folder.'netpbm.tmp'); |
|
699 |
@chmod($this->full_dst_path, FILE_WRITE_MODE); |
|
700 |
||
701 |
return TRUE; |
|
702 |
}
|
|
703 |
||
704 |
// --------------------------------------------------------------------
|
|
705 |
||
706 |
/**
|
|
707 |
* Image Rotate Using GD
|
|
708 |
*
|
|
709 |
* @access public
|
|
710 |
* @return bool
|
|
711 |
*/
|
|
712 |
function image_rotate_gd() |
|
713 |
{
|
|
714 |
// Create the image handle
|
|
715 |
if ( ! ($src_img = $this->image_create_gd())) |
|
716 |
{
|
|
717 |
return FALSE; |
|
718 |
}
|
|
719 |
||
720 |
// Set the background color
|
|
721 |
// This won't work with transparent PNG files so we are
|
|
722 |
// going to have to figure out how to determine the color
|
|
723 |
// of the alpha channel in a future release.
|
|
724 |
||
725 |
$white = imagecolorallocate($src_img, 255, 255, 255); |
|
726 |
||
727 |
// Rotate it!
|
|
728 |
$dst_img = imagerotate($src_img, $this->rotation_angle, $white); |
|
729 |
||
730 |
// Save the Image
|
|
731 |
if ($this->dynamic_output == TRUE) |
|
732 |
{
|
|
733 |
$this->image_display_gd($dst_img); |
|
734 |
}
|
|
735 |
else
|
|
736 |
{
|
|
737 |
// Or save it
|
|
738 |
if ( ! $this->image_save_gd($dst_img)) |
|
739 |
{
|
|
740 |
return FALSE; |
|
741 |
}
|
|
742 |
}
|
|
743 |
||
744 |
// Kill the file handles
|
|
745 |
imagedestroy($dst_img); |
|
746 |
imagedestroy($src_img); |
|
747 |
||
748 |
// Set the file to 777
|
|
749 |
||
750 |
@chmod($this->full_dst_path, FILE_WRITE_MODE); |
|
751 |
||
752 |
return TRUE; |
|
753 |
}
|
|
754 |
||
755 |
// --------------------------------------------------------------------
|
|
756 |
||
757 |
/**
|
|
758 |
* Create Mirror Image using GD
|
|
759 |
*
|
|
760 |
* This function will flip horizontal or vertical
|
|
761 |
*
|
|
762 |
* @access public
|
|
763 |
* @return bool
|
|
764 |
*/
|
|
765 |
function image_mirror_gd() |
|
766 |
{
|
|
767 |
if ( ! $src_img = $this->image_create_gd()) |
|
768 |
{
|
|
769 |
return FALSE; |
|
770 |
}
|
|
771 |
||
772 |
$width = $this->orig_width; |
|
773 |
$height = $this->orig_height; |
|
774 |
||
775 |
if ($this->rotation_angle == 'hor') |
|
776 |
{
|
|
777 |
for ($i = 0; $i < $height; $i++) |
|
778 |
{
|
|
779 |
$left = 0; |
|
780 |
$right = $width-1; |
|
781 |
||
782 |
while ($left < $right) |
|
783 |
{
|
|
784 |
$cl = imagecolorat($src_img, $left, $i); |
|
785 |
$cr = imagecolorat($src_img, $right, $i); |
|
786 |
||
787 |
imagesetpixel($src_img, $left, $i, $cr); |
|
788 |
imagesetpixel($src_img, $right, $i, $cl); |
|
789 |
||
790 |
$left++; |
|
791 |
$right--; |
|
792 |
}
|
|
793 |
}
|
|
794 |
}
|
|
795 |
else
|
|
796 |
{
|
|
797 |
for ($i = 0; $i < $width; $i++) |
|
798 |
{
|
|
799 |
$top = 0; |
|
800 |
$bot = $height-1; |
|
801 |
||
802 |
while ($top < $bot) |
|
803 |
{
|
|
804 |
$ct = imagecolorat($src_img, $i, $top); |
|
805 |
$cb = imagecolorat($src_img, $i, $bot); |
|
806 |
||
807 |
imagesetpixel($src_img, $i, $top, $cb); |
|
808 |
imagesetpixel($src_img, $i, $bot, $ct); |
|
809 |
||
810 |
$top++; |
|
811 |
$bot--; |
|
812 |
}
|
|
813 |
}
|
|
814 |
}
|
|
815 |
||
816 |
// Show the image
|
|
817 |
if ($this->dynamic_output == TRUE) |
|
818 |
{
|
|
819 |
$this->image_display_gd($src_img); |
|
820 |
}
|
|
821 |
else
|
|
822 |
{
|
|
823 |
// Or save it
|
|
824 |
if ( ! $this->image_save_gd($src_img)) |
|
825 |
{
|
|
826 |
return FALSE; |
|
827 |
}
|
|
828 |
}
|
|
829 |
||
830 |
// Kill the file handles
|
|
831 |
imagedestroy($src_img); |
|
832 |
||
833 |
// Set the file to 777
|
|
834 |
@chmod($this->full_dst_path, FILE_WRITE_MODE); |
|
835 |
||
836 |
return TRUE; |
|
837 |
}
|
|
838 |
||
839 |
// --------------------------------------------------------------------
|
|
840 |
||
841 |
/**
|
|
842 |
* Image Watermark
|
|
843 |
*
|
|
844 |
* This is a wrapper function that chooses the type
|
|
845 |
* of watermarking based on the specified preference.
|
|
846 |
*
|
|
847 |
* @access public
|
|
848 |
* @param string
|
|
849 |
* @return bool
|
|
850 |
*/
|
|
851 |
function watermark() |
|
852 |
{
|
|
853 |
if ($this->wm_type == 'overlay') |
|
854 |
{
|
|
855 |
return $this->overlay_watermark(); |
|
856 |
}
|
|
857 |
else
|
|
858 |
{
|
|
859 |
return $this->text_watermark(); |
|
860 |
}
|
|
861 |
}
|
|
862 |
||
863 |
// --------------------------------------------------------------------
|
|
864 |
||
865 |
/**
|
|
866 |
* Watermark - Graphic Version
|
|
867 |
*
|
|
868 |
* @access public
|
|
869 |
* @return bool
|
|
870 |
*/
|
|
871 |
function overlay_watermark() |
|
872 |
{
|
|
873 |
if ( ! function_exists('imagecolortransparent')) |
|
874 |
{
|
|
875 |
$this->set_error('imglib_gd_required'); |
|
876 |
return FALSE; |
|
877 |
}
|
|
878 |
||
879 |
// Fetch source image properties
|
|
880 |
$this->get_image_properties(); |
|
881 |
||
882 |
// Fetch watermark image properties
|
|
883 |
$props = $this->get_image_properties($this->wm_overlay_path, TRUE); |
|
884 |
$wm_img_type = $props['image_type']; |
|
885 |
$wm_width = $props['width']; |
|
886 |
$wm_height = $props['height']; |
|
887 |
||
888 |
// Create two image resources
|
|
889 |
$wm_img = $this->image_create_gd($this->wm_overlay_path, $wm_img_type); |
|
890 |
$src_img = $this->image_create_gd($this->full_src_path); |
|
891 |
||
892 |
// Reverse the offset if necessary
|
|
893 |
// When the image is positioned at the bottom
|
|
894 |
// we don't want the vertical offset to push it
|
|
895 |
// further down. We want the reverse, so we'll
|
|
896 |
// invert the offset. Same with the horizontal
|
|
897 |
// offset when the image is at the right
|
|
898 |
||
899 |
$this->wm_vrt_alignment = strtoupper(substr($this->wm_vrt_alignment, 0, 1)); |
|
900 |
$this->wm_hor_alignment = strtoupper(substr($this->wm_hor_alignment, 0, 1)); |
|
901 |
||
902 |
if ($this->wm_vrt_alignment == 'B') |
|
903 |
$this->wm_vrt_offset = $this->wm_vrt_offset * -1; |
|
904 |
||
905 |
if ($this->wm_hor_alignment == 'R') |
|
906 |
$this->wm_hor_offset = $this->wm_hor_offset * -1; |
|
907 |
||
908 |
// Set the base x and y axis values
|
|
909 |
$x_axis = $this->wm_hor_offset + $this->wm_padding; |
|
910 |
$y_axis = $this->wm_vrt_offset + $this->wm_padding; |
|
911 |
||
912 |
// Set the vertical position
|
|
913 |
switch ($this->wm_vrt_alignment) |
|
914 |
{
|
|
915 |
case 'T': |
|
916 |
break; |
|
917 |
case 'M': $y_axis += ($this->orig_height / 2) - ($wm_height / 2); |
|
918 |
break; |
|
919 |
case 'B': $y_axis += $this->orig_height - $wm_height; |
|
920 |
break; |
|
921 |
}
|
|
922 |
||
923 |
// Set the horizontal position
|
|
924 |
switch ($this->wm_hor_alignment) |
|
925 |
{
|
|
926 |
case 'L': |
|
927 |
break; |
|
928 |
case 'C': $x_axis += ($this->orig_width / 2) - ($wm_width / 2); |
|
929 |
break; |
|
930 |
case 'R': $x_axis += $this->orig_width - $wm_width; |
|
931 |
break; |
|
932 |
}
|
|
933 |
||
934 |
// Build the finalized image
|
|
935 |
if ($wm_img_type == 3 AND function_exists('imagealphablending')) |
|
936 |
{
|
|
937 |
@imagealphablending($src_img, TRUE); |
|
938 |
}
|
|
939 |
||
940 |
// Set RGB values for text and shadow
|
|
941 |
$rgba = imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp); |
|
942 |
$alpha = ($rgba & 0x7F000000) >> 24; |
|
943 |
||
944 |
// make a best guess as to whether we're dealing with an image with alpha transparency or no/binary transparency
|
|
945 |
if ($alpha > 0) |
|
946 |
{
|
|
947 |
// copy the image directly, the image's alpha transparency being the sole determinant of blending
|
|
948 |
imagecopy($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height); |
|
949 |
}
|
|
950 |
else
|
|
951 |
{
|
|
952 |
// set our RGB value from above to be transparent and merge the images with the specified opacity
|
|
953 |
imagecolortransparent($wm_img, imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp)); |
|
954 |
imagecopymerge($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height, $this->wm_opacity); |
|
955 |
}
|
|
956 |
||
957 |
// Output the image
|
|
958 |
if ($this->dynamic_output == TRUE) |
|
959 |
{
|
|
960 |
$this->image_display_gd($src_img); |
|
961 |
}
|
|
962 |
else
|
|
963 |
{
|
|
964 |
if ( ! $this->image_save_gd($src_img)) |
|
965 |
{
|
|
966 |
return FALSE; |
|
967 |
}
|
|
968 |
}
|
|
969 |
||
970 |
imagedestroy($src_img); |
|
971 |
imagedestroy($wm_img); |
|
972 |
||
973 |
return TRUE; |
|
974 |
}
|
|
975 |
||
976 |
// --------------------------------------------------------------------
|
|
977 |
||
978 |
/**
|
|
979 |
* Watermark - Text Version
|
|
980 |
*
|
|
981 |
* @access public
|
|
982 |
* @return bool
|
|
983 |
*/
|
|
984 |
function text_watermark() |
|
985 |
{
|
|
986 |
if ( ! ($src_img = $this->image_create_gd())) |
|
987 |
{
|
|
988 |
return FALSE; |
|
989 |
}
|
|
990 |
||
991 |
if ($this->wm_use_truetype == TRUE AND ! file_exists($this->wm_font_path)) |
|
992 |
{
|
|
993 |
$this->set_error('imglib_missing_font'); |
|
994 |
return FALSE; |
|
995 |
}
|
|
996 |
||
997 |
// Fetch source image properties
|
|
998 |
$this->get_image_properties(); |
|
999 |
||
1000 |
// Set RGB values for text and shadow
|
|
1001 |
$this->wm_font_color = str_replace('#', '', $this->wm_font_color); |
|
1002 |
$this->wm_shadow_color = str_replace('#', '', $this->wm_shadow_color); |
|
1003 |
||
1004 |
$R1 = hexdec(substr($this->wm_font_color, 0, 2)); |
|
1005 |
$G1 = hexdec(substr($this->wm_font_color, 2, 2)); |
|
1006 |
$B1 = hexdec(substr($this->wm_font_color, 4, 2)); |
|
1007 |
||
1008 |
$R2 = hexdec(substr($this->wm_shadow_color, 0, 2)); |
|
1009 |
$G2 = hexdec(substr($this->wm_shadow_color, 2, 2)); |
|
1010 |
$B2 = hexdec(substr($this->wm_shadow_color, 4, 2)); |
|
1011 |
||
1012 |
$txt_color = imagecolorclosest($src_img, $R1, $G1, $B1); |
|
1013 |
$drp_color = imagecolorclosest($src_img, $R2, $G2, $B2); |
|
1014 |
||
1015 |
// Reverse the vertical offset
|
|
1016 |
// When the image is positioned at the bottom
|
|
1017 |
// we don't want the vertical offset to push it
|
|
1018 |
// further down. We want the reverse, so we'll
|
|
1019 |
// invert the offset. Note: The horizontal
|
|
1020 |
// offset flips itself automatically
|
|
1021 |
||
1022 |
if ($this->wm_vrt_alignment == 'B') |
|
1023 |
$this->wm_vrt_offset = $this->wm_vrt_offset * -1; |
|
1024 |
||
1025 |
if ($this->wm_hor_alignment == 'R') |
|
1026 |
$this->wm_hor_offset = $this->wm_hor_offset * -1; |
|
1027 |
||
1028 |
// Set font width and height
|
|
1029 |
// These are calculated differently depending on
|
|
1030 |
// whether we are using the true type font or not
|
|
1031 |
if ($this->wm_use_truetype == TRUE) |
|
1032 |
{
|
|
1033 |
if ($this->wm_font_size == '') |
|
1034 |
$this->wm_font_size = '17'; |
|
1035 |
||
1036 |
$fontwidth = $this->wm_font_size-($this->wm_font_size/4); |
|
1037 |
$fontheight = $this->wm_font_size; |
|
1038 |
$this->wm_vrt_offset += $this->wm_font_size; |
|
1039 |
}
|
|
1040 |
else
|
|
1041 |
{
|
|
1042 |
$fontwidth = imagefontwidth($this->wm_font_size); |
|
1043 |
$fontheight = imagefontheight($this->wm_font_size); |
|
1044 |
}
|
|
1045 |
||
1046 |
// Set base X and Y axis values
|
|
1047 |
$x_axis = $this->wm_hor_offset + $this->wm_padding; |
|
1048 |
$y_axis = $this->wm_vrt_offset + $this->wm_padding; |
|
1049 |
||
1050 |
// Set verticle alignment
|
|
1051 |
if ($this->wm_use_drop_shadow == FALSE) |
|
1052 |
$this->wm_shadow_distance = 0; |
|
1053 |
||
1054 |
$this->wm_vrt_alignment = strtoupper(substr($this->wm_vrt_alignment, 0, 1)); |
|
1055 |
$this->wm_hor_alignment = strtoupper(substr($this->wm_hor_alignment, 0, 1)); |
|
1056 |
||
1057 |
switch ($this->wm_vrt_alignment) |
|
1058 |
{
|
|
1059 |
case "T" : |
|
1060 |
break; |
|
1061 |
case "M": $y_axis += ($this->orig_height/2)+($fontheight/2); |
|
1062 |
break; |
|
1063 |
case "B": $y_axis += ($this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight/2)); |
|
1064 |
break; |
|
1065 |
}
|
|
1066 |
||
1067 |
$x_shad = $x_axis + $this->wm_shadow_distance; |
|
1068 |
$y_shad = $y_axis + $this->wm_shadow_distance; |
|
1069 |
||
1070 |
// Set horizontal alignment
|
|
1071 |
switch ($this->wm_hor_alignment) |
|
1072 |
{
|
|
1073 |
case "L": |
|
1074 |
break; |
|
1075 |
case "R": |
|
1076 |
if ($this->wm_use_drop_shadow) |
|
1077 |
$x_shad += ($this->orig_width - $fontwidth*strlen($this->wm_text)); |
|
1078 |
$x_axis += ($this->orig_width - $fontwidth*strlen($this->wm_text)); |
|
1079 |
break; |
|
1080 |
case "C": |
|
1081 |
if ($this->wm_use_drop_shadow) |
|
1082 |
$x_shad += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2); |
|
1083 |
$x_axis += floor(($this->orig_width -$fontwidth*strlen($this->wm_text))/2); |
|
1084 |
break; |
|
1085 |
}
|
|
1086 |
||
1087 |
// Add the text to the source image
|
|
1088 |
if ($this->wm_use_truetype) |
|
1089 |
{
|
|
1090 |
if ($this->wm_use_drop_shadow) |
|
1091 |
imagettftext($src_img, $this->wm_font_size, 0, $x_shad, $y_shad, $drp_color, $this->wm_font_path, $this->wm_text); |
|
1092 |
imagettftext($src_img, $this->wm_font_size, 0, $x_axis, $y_axis, $txt_color, $this->wm_font_path, $this->wm_text); |
|
1093 |
}
|
|
1094 |
else
|
|
1095 |
{
|
|
1096 |
if ($this->wm_use_drop_shadow) |
|
1097 |
imagestring($src_img, $this->wm_font_size, $x_shad, $y_shad, $this->wm_text, $drp_color); |
|
1098 |
imagestring($src_img, $this->wm_font_size, $x_axis, $y_axis, $this->wm_text, $txt_color); |
|
1099 |
}
|
|
1100 |
||
1101 |
// Output the final image
|
|
1102 |
if ($this->dynamic_output == TRUE) |
|
1103 |
{
|
|
1104 |
$this->image_display_gd($src_img); |
|
1105 |
}
|
|
1106 |
else
|
|
1107 |
{
|
|
1108 |
$this->image_save_gd($src_img); |
|
1109 |
}
|
|
1110 |
||
1111 |
imagedestroy($src_img); |
|
1112 |
||
1113 |
return TRUE; |
|
1114 |
}
|
|
1115 |
||
1116 |
// --------------------------------------------------------------------
|
|
1117 |
||
1118 |
/**
|
|
1119 |
* Create Image - GD
|
|
1120 |
*
|
|
1121 |
* This simply creates an image resource handle
|
|
1122 |
* based on the type of image being processed
|
|
1123 |
*
|
|
1124 |
* @access public
|
|
1125 |
* @param string
|
|
1126 |
* @return resource
|
|
1127 |
*/
|
|
1128 |
function image_create_gd($path = '', $image_type = '') |
|
1129 |
{
|
|
1130 |
if ($path == '') |
|
1131 |
$path = $this->full_src_path; |
|
1132 |
||
1133 |
if ($image_type == '') |
|
1134 |
$image_type = $this->image_type; |
|
1135 |
||
1136 |
||
1137 |
switch ($image_type) |
|
1138 |
{
|
|
1139 |
case 1 : |
|
1140 |
if ( ! function_exists('imagecreatefromgif')) |
|
1141 |
{
|
|
1142 |
$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_gif_not_supported')); |
|
1143 |
return FALSE; |
|
1144 |
}
|
|
1145 |
||
1146 |
return imagecreatefromgif($path); |
|
1147 |
break; |
|
1148 |
case 2 : |
|
1149 |
if ( ! function_exists('imagecreatefromjpeg')) |
|
1150 |
{
|
|
1151 |
$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_jpg_not_supported')); |
|
1152 |
return FALSE; |
|
1153 |
}
|
|
1154 |
||
1155 |
return imagecreatefromjpeg($path); |
|
1156 |
break; |
|
1157 |
case 3 : |
|
1158 |
if ( ! function_exists('imagecreatefrompng')) |
|
1159 |
{
|
|
1160 |
$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_png_not_supported')); |
|
1161 |
return FALSE; |
|
1162 |
}
|
|
1163 |
||
1164 |
return imagecreatefrompng($path); |
|
1165 |
break; |
|
1166 |
||
1167 |
}
|
|
1168 |
||
1169 |
$this->set_error(array('imglib_unsupported_imagecreate')); |
|
1170 |
return FALSE; |
|
1171 |
}
|
|
1172 |
||
1173 |
// --------------------------------------------------------------------
|
|
1174 |
||
1175 |
/**
|
|
1176 |
* Write image file to disk - GD
|
|
1177 |
*
|
|
1178 |
* Takes an image resource as input and writes the file
|
|
1179 |
* to the specified destination
|
|
1180 |
*
|
|
1181 |
* @access public
|
|
1182 |
* @param resource
|
|
1183 |
* @return bool
|
|
1184 |
*/
|
|
1185 |
function image_save_gd($resource) |
|
1186 |
{
|
|
1187 |
switch ($this->image_type) |
|
1188 |
{
|
|
1189 |
case 1 : |
|
1190 |
if ( ! function_exists('imagegif')) |
|
1191 |
{
|
|
1192 |
$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_gif_not_supported')); |
|
1193 |
return FALSE; |
|
1194 |
}
|
|
1195 |
||
1196 |
if ( ! @imagegif($resource, $this->full_dst_path)) |
|
1197 |
{
|
|
1198 |
$this->set_error('imglib_save_failed'); |
|
1199 |
return FALSE; |
|
1200 |
}
|
|
1201 |
break; |
|
1202 |
case 2 : |
|
1203 |
if ( ! function_exists('imagejpeg')) |
|
1204 |
{
|
|
1205 |
$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_jpg_not_supported')); |
|
1206 |
return FALSE; |
|
1207 |
}
|
|
1208 |
||
1209 |
if ( ! @imagejpeg($resource, $this->full_dst_path, $this->quality)) |
|
1210 |
{
|
|
1211 |
$this->set_error('imglib_save_failed'); |
|
1212 |
return FALSE; |
|
1213 |
}
|
|
1214 |
break; |
|
1215 |
case 3 : |
|
1216 |
if ( ! function_exists('imagepng')) |
|
1217 |
{
|
|
1218 |
$this->set_error(array('imglib_unsupported_imagecreate', 'imglib_png_not_supported')); |
|
1219 |
return FALSE; |
|
1220 |
}
|
|
1221 |
||
1222 |
if ( ! @imagepng($resource, $this->full_dst_path)) |
|
1223 |
{
|
|
1224 |
$this->set_error('imglib_save_failed'); |
|
1225 |
return FALSE; |
|
1226 |
}
|
|
1227 |
break; |
|
1228 |
default : |
|
1229 |
$this->set_error(array('imglib_unsupported_imagecreate')); |
|
1230 |
return FALSE; |
|
1231 |
break; |
|
1232 |
}
|
|
1233 |
||
1234 |
return TRUE; |
|
1235 |
}
|
|
1236 |
||
1237 |
// --------------------------------------------------------------------
|
|
1238 |
||
1239 |
/**
|
|
1240 |
* Dynamically outputs an image
|
|
1241 |
*
|
|
1242 |
* @access public
|
|
1243 |
* @param resource
|
|
1244 |
* @return void
|
|
1245 |
*/
|
|
1246 |
function image_display_gd($resource) |
|
1247 |
{
|
|
1248 |
header("Content-Disposition: filename={$this->source_image};"); |
|
1249 |
header("Content-Type: {$this->mime_type}"); |
|
1250 |
header('Content-Transfer-Encoding: binary'); |
|
1251 |
header('Last-Modified: '.gmdate('D, d M Y H:i:s', time()).' GMT'); |
|
1252 |
||
1253 |
switch ($this->image_type) |
|
1254 |
{
|
|
1255 |
case 1 : imagegif($resource); |
|
1256 |
break; |
|
1257 |
case 2 : imagejpeg($resource, '', $this->quality); |
|
1258 |
break; |
|
1259 |
case 3 : imagepng($resource); |
|
1260 |
break; |
|
1261 |
default : echo 'Unable to display the image'; |
|
1262 |
break; |
|
1263 |
}
|
|
1264 |
}
|
|
1265 |
||
1266 |
// --------------------------------------------------------------------
|
|
1267 |
||
1268 |
/**
|
|
1269 |
* Re-proportion Image Width/Height
|
|
1270 |
*
|
|
1271 |
* When creating thumbs, the desired width/height
|
|
1272 |
* can end up warping the image due to an incorrect
|
|
1273 |
* ratio between the full-sized image and the thumb.
|
|
1274 |
*
|
|
1275 |
* This function lets us re-proportion the width/height
|
|
1276 |
* if users choose to maintain the aspect ratio when resizing.
|
|
1277 |
*
|
|
1278 |
* @access public
|
|
1279 |
* @return void
|
|
1280 |
*/
|
|
1281 |
function image_reproportion() |
|
1282 |
{
|
|
1283 |
if ( ! is_numeric($this->width) OR ! is_numeric($this->height) OR $this->width == 0 OR $this->height == 0) |
|
1284 |
return; |
|
1285 |
||
1286 |
if ( ! is_numeric($this->orig_width) OR ! is_numeric($this->orig_height) OR $this->orig_width == 0 OR $this->orig_height == 0) |
|
1287 |
return; |
|
1288 |
||
1289 |
$new_width = ceil($this->orig_width*$this->height/$this->orig_height); |
|
1290 |
$new_height = ceil($this->width*$this->orig_height/$this->orig_width); |
|
1291 |
||
1292 |
$ratio = (($this->orig_height/$this->orig_width) - ($this->height/$this->width)); |
|
1293 |
||
1294 |
if ($this->master_dim != 'width' AND $this->master_dim != 'height') |
|
1295 |
{
|
|
1296 |
$this->master_dim = ($ratio < 0) ? 'width' : 'height'; |
|
1297 |
}
|
|
1298 |
||
1299 |
if (($this->width != $new_width) AND ($this->height != $new_height)) |
|
1300 |
{
|
|
1301 |
if ($this->master_dim == 'height') |
|
1302 |
{
|
|
1303 |
$this->width = $new_width; |
|
1304 |
}
|
|
1305 |
else
|
|
1306 |
{
|
|
1307 |
$this->height = $new_height; |
|
1308 |
}
|
|
1309 |
}
|
|
1310 |
}
|
|
1311 |
||
1312 |
// --------------------------------------------------------------------
|
|
1313 |
||
1314 |
/**
|
|
1315 |
* Get image properties
|
|
1316 |
*
|
|
1317 |
* A helper function that gets info about the file
|
|
1318 |
*
|
|
1319 |
* @access public
|
|
1320 |
* @param string
|
|
1321 |
* @return mixed
|
|
1322 |
*/
|
|
1323 |
function get_image_properties($path = '', $return = FALSE) |
|
1324 |
{
|
|
1325 |
// For now we require GD but we should
|
|
1326 |
// find a way to determine this using IM or NetPBM
|
|
1327 |
||
1328 |
if ($path == '') |
|
1329 |
$path = $this->full_src_path; |
|
1330 |
||
1331 |
if ( ! file_exists($path)) |
|
1332 |
{
|
|
1333 |
$this->set_error('imglib_invalid_path'); |
|
1334 |
return FALSE; |
|
1335 |
}
|
|
1336 |
||
1337 |
$vals = @getimagesize($path); |
|
1338 |
||
1339 |
$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png'); |
|
1340 |
||
1341 |
$mime = (isset($types[$vals['2']])) ? 'image/'.$types[$vals['2']] : 'image/jpg'; |
|
1342 |
||
1343 |
if ($return == TRUE) |
|
1344 |
{
|
|
1345 |
$v['width'] = $vals['0']; |
|
1346 |
$v['height'] = $vals['1']; |
|
1347 |
$v['image_type'] = $vals['2']; |
|
1348 |
$v['size_str'] = $vals['3']; |
|
1349 |
$v['mime_type'] = $mime; |
|
1350 |
||
1351 |
return $v; |
|
1352 |
}
|
|
1353 |
||
1354 |
$this->orig_width = $vals['0']; |
|
1355 |
$this->orig_height = $vals['1']; |
|
1356 |
$this->image_type = $vals['2']; |
|
1357 |
$this->size_str = $vals['3']; |
|
1358 |
$this->mime_type = $mime; |
|
1359 |
||
1360 |
return TRUE; |
|
1361 |
}
|
|
1362 |
||
1363 |
// --------------------------------------------------------------------
|
|
1364 |
||
1365 |
/**
|
|
1366 |
* Size calculator
|
|
1367 |
*
|
|
1368 |
* This function takes a known width x height and
|
|
1369 |
* recalculates it to a new size. Only one
|
|
1370 |
* new variable needs to be known
|
|
1371 |
*
|
|
1372 |
* $props = array(
|
|
1373 |
* 'width' => $width,
|
|
1374 |
* 'height' => $height,
|
|
1375 |
* 'new_width' => 40,
|
|
1376 |
* 'new_height' => ''
|
|
1377 |
* );
|
|
1378 |
*
|
|
1379 |
* @access public
|
|
1380 |
* @param array
|
|
1381 |
* @return array
|
|
1382 |
*/
|
|
1383 |
function size_calculator($vals) |
|
1384 |
{
|
|
1385 |
if ( ! is_array($vals)) |
|
1386 |
{
|
|
1387 |
return; |
|
1388 |
}
|
|
1389 |
||
1390 |
$allowed = array('new_width', 'new_height', 'width', 'height'); |
|
1391 |
||
1392 |
foreach ($allowed as $item) |
|
1393 |
{
|
|
1394 |
if ( ! isset($vals[$item]) OR $vals[$item] == '') |
|
1395 |
$vals[$item] = 0; |
|
1396 |
}
|
|
1397 |
||
1398 |
if ($vals['width'] == 0 OR $vals['height'] == 0) |
|
1399 |
{
|
|
1400 |
return $vals; |
|
1401 |
}
|
|
1402 |
||
1403 |
if ($vals['new_width'] == 0) |
|
1404 |
{
|
|
1405 |
$vals['new_width'] = ceil($vals['width']*$vals['new_height']/$vals['height']); |
|
1406 |
}
|
|
1407 |
elseif ($vals['new_height'] == 0) |
|
1408 |
{
|
|
1409 |
$vals['new_height'] = ceil($vals['new_width']*$vals['height']/$vals['width']); |
|
1410 |
}
|
|
1411 |
||
1412 |
return $vals; |
|
1413 |
}
|
|
1414 |
||
1415 |
// --------------------------------------------------------------------
|
|
1416 |
||
1417 |
/**
|
|
1418 |
* Explode source_image
|
|
1419 |
*
|
|
1420 |
* This is a helper function that extracts the extension
|
|
1421 |
* from the source_image. This function lets us deal with
|
|
1422 |
* source_images with multiple periods, like: my.cool.jpg
|
|
1423 |
* It returns an associative array with two elements:
|
|
1424 |
* $array['ext'] = '.jpg';
|
|
1425 |
* $array['name'] = 'my.cool';
|
|
1426 |
*
|
|
1427 |
* @access public
|
|
1428 |
* @param array
|
|
1429 |
* @return array
|
|
1430 |
*/
|
|
1431 |
function explode_name($source_image) |
|
1432 |
{
|
|
1433 |
$ext = strrchr($source_image, '.'); |
|
1434 |
$name = ($ext === FALSE) ? $source_image : substr($source_image, 0, -strlen($ext)); |
|
1435 |
||
1436 |
return array('ext' => $ext, 'name' => $name); |
|
1437 |
}
|
|
1438 |
||
1439 |
// --------------------------------------------------------------------
|
|
1440 |
||
1441 |
/**
|
|
1442 |
* Is GD Installed?
|
|
1443 |
*
|
|
1444 |
* @access public
|
|
1445 |
* @return bool
|
|
1446 |
*/
|
|
1447 |
function gd_loaded() |
|
1448 |
{
|
|
1449 |
if ( ! extension_loaded('gd')) |
|
1450 |
{
|
|
1451 |
if ( ! dl('gd.so')) |
|
1452 |
{
|
|
1453 |
return FALSE; |
|
1454 |
}
|
|
1455 |
}
|
|
1456 |
||
1457 |
return TRUE; |
|
1458 |
}
|
|
1459 |
||
1460 |
// --------------------------------------------------------------------
|
|
1461 |
||
1462 |
/**
|
|
1463 |
* Get GD version
|
|
1464 |
*
|
|
1465 |
* @access public
|
|
1466 |
* @return mixed
|
|
1467 |
*/
|
|
1468 |
function gd_version() |
|
1469 |
{
|
|
1470 |
if (function_exists('gd_info')) |
|
1471 |
{
|
|
1472 |
$gd_version = @gd_info(); |
|
1473 |
$gd_version = preg_replace("/\D/", "", $gd_version['GD Version']); |
|
1474 |
||
1475 |
return $gd_version; |
|
1476 |
}
|
|
1477 |
||
1478 |
return FALSE; |
|
1479 |
}
|
|
1480 |
||
1481 |
// --------------------------------------------------------------------
|
|
1482 |
||
1483 |
/**
|
|
1484 |
* Set error message
|
|
1485 |
*
|
|
1486 |
* @access public
|
|
1487 |
* @param string
|
|
1488 |
* @return void
|
|
1489 |
*/
|
|
1490 |
function set_error($msg) |
|
1491 |
{
|
|
1492 |
$CI =& get_instance(); |
|
1493 |
$CI->lang->load('imglib'); |
|
1494 |
||
1495 |
if (is_array($msg)) |
|
1496 |
{
|
|
1497 |
foreach ($msg as $val) |
|
1498 |
{
|
|
1499 |
||
1500 |
$msg = ($CI->lang->line($val) == FALSE) ? $val : $CI->lang->line($val); |
|
1501 |
$this->error_msg[] = $msg; |
|
1502 |
log_message('error', $msg); |
|
1503 |
}
|
|
1504 |
}
|
|
1505 |
else
|
|
1506 |
{
|
|
1507 |
$msg = ($CI->lang->line($msg) == FALSE) ? $msg : $CI->lang->line($msg); |
|
1508 |
$this->error_msg[] = $msg; |
|
1509 |
log_message('error', $msg); |
|
1510 |
}
|
|
1511 |
}
|
|
1512 |
||
1513 |
// --------------------------------------------------------------------
|
|
1514 |
||
1515 |
/**
|
|
1516 |
* Show error messages
|
|
1517 |
*
|
|
1518 |
* @access public
|
|
1519 |
* @param string
|
|
1520 |
* @return string
|
|
1521 |
*/
|
|
1522 |
function display_errors($open = '<p>', $close = '</p>') |
|
1523 |
{
|
|
1524 |
$str = ''; |
|
1525 |
foreach ($this->error_msg as $val) |
|
1526 |
{
|
|
1527 |
$str .= $open.$val.$close; |
|
1528 |
}
|
|
1529 |
||
1530 |
return $str; |
|
1531 |
}
|
|
1532 |
||
1533 |
}
|
|
1534 |
// END Image_lib Class
|
|
1535 |
||
1536 |
/* End of file Image_lib.php */
|
|
1537 |
/* Location: ./system/libraries/Image_lib.php */
|