From c5d887941fac6754972e87979e180cc043c4d0fe Mon Sep 17 00:00:00 2001 From: Derek Allard Date: Thu, 1 Feb 2007 03:12:32 +0000 Subject: fixed resize bug that was comparing height to width instead of height to original height --- system/libraries/Image_lib.php | 3052 ++++++++++++++++++++-------------------- 1 file changed, 1526 insertions(+), 1526 deletions(-) (limited to 'system/libraries') diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php index 561c5c03a..28e1bfbbc 100644 --- a/system/libraries/Image_lib.php +++ b/system/libraries/Image_lib.php @@ -1,1527 +1,1527 @@ - 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 = ''; - } - } - - // -------------------------------------------------------------------- - - /** - * 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') - { - $v2_override = FALSE; - - if ($action == 'crop') - { - // If the target width/height match the source then it's pointless to crop, right? - if ($this->width >= $this->orig_width AND $this->height >= $this->orig_width) - { - // We'll return true so the user thinks the process succeeded. - // It'll be our little secret... - - return TRUE; - } - - // 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 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 - if (($this->orig_width == $this->width AND $this->orig_height == $this->height) AND ($this->source_image != $this->dest_image)) - { - if ( ! @copy($this->full_src_path, $this->full_dst_path)) - { - $this->set_error('imglib_copy_failed'); - return FALSE; - } - - @chmod($this->full_dst_path, 0777); - return TRUE; - } - - // If resizing the x/y axis must be zero - $this->x_axis = 0; - $this->y_axis = 0; - } - - // Create the image handle - if ( ! ($src_img = $this->image_create_gd())) - { - return FALSE; - } - - // Create The Image - if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor') AND $v2_override == FALSE) - { - $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($this->full_dst_path, 0777); - - return TRUE; - } - - // -------------------------------------------------------------------- - - /** - * Image Process Using ImageMagick - * - * This function will resize, crop or rotate - * - * @access public - * @param string - * @return bool - */ - function image_process_imagemagick($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, 0777); - - 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($dst_image, 0777); - - 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, 0777); - - 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, 0777); - - 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($src_img, TRUE); - } - - // Set RGB values for text and shadow - imagecolortransparent($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 = '

', $close = '

') - { - $str = ''; - foreach ($this->error_msg as $val) - { - $str .= $open.$val.$close; - } - - return $str; - } - -} -// END Image_lib Class + 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 = ''; + } + } + + // -------------------------------------------------------------------- + + /** + * 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') + { + $v2_override = FALSE; + + if ($action == 'crop') + { + // If the target width/height match the source then it's pointless to crop, right? + if ($this->width >= $this->orig_width AND $this->height >= $this->orig_height) + { + // We'll return true so the user thinks the process succeeded. + // It'll be our little secret... + + return TRUE; + } + + // 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 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 + if (($this->orig_width == $this->width AND $this->orig_height == $this->height) AND ($this->source_image != $this->dest_image)) + { + if ( ! @copy($this->full_src_path, $this->full_dst_path)) + { + $this->set_error('imglib_copy_failed'); + return FALSE; + } + + @chmod($this->full_dst_path, 0777); + return TRUE; + } + + // If resizing the x/y axis must be zero + $this->x_axis = 0; + $this->y_axis = 0; + } + + // Create the image handle + if ( ! ($src_img = $this->image_create_gd())) + { + return FALSE; + } + + // Create The Image + if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor') AND $v2_override == FALSE) + { + $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($this->full_dst_path, 0777); + + return TRUE; + } + + // -------------------------------------------------------------------- + + /** + * Image Process Using ImageMagick + * + * This function will resize, crop or rotate + * + * @access public + * @param string + * @return bool + */ + function image_process_imagemagick($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, 0777); + + 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($dst_image, 0777); + + 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, 0777); + + 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, 0777); + + 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($src_img, TRUE); + } + + // Set RGB values for text and shadow + imagecolortransparent($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 = '

', $close = '

') + { + $str = ''; + foreach ($this->error_msg as $val) + { + $str .= $open.$val.$close; + } + + return $str; + } + +} +// END Image_lib Class ?> \ No newline at end of file -- cgit v1.2.3-24-g4f1b