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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2009 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
class watermark_graphics_Core {
/**
* Overlay an image on top of the input file.
*
* Valid options are: file, mime_type, position, transparency_percent, padding
*
* Valid positions: northwest, north, northeast,
* west, center, east,
* southwest, south, southeast
*
* padding is in pixels
*
* @param string $input_file
* @param string $output_file
* @param array $options
*/
static function composite($input_file, $output_file, $options) {
try {
graphics::init_toolkit();
module::event("graphics_composite", $input_file, $output_file, $options);
list ($width, $height) = getimagesize($input_file);
list ($w_width, $w_height) = getimagesize($options["file"]);
$pad = isset($options["padding"]) ? $options["padding"] : 10;
$top = $pad;
$left = $pad;
$y_center = max($height / 2 - $w_height / 2, $pad);
$x_center = max($width / 2 - $w_width / 2, $pad);
$bottom = max($height - $w_height - $pad, $pad);
$right = max($width - $w_width - $pad, $pad);
switch ($options["position"]) {
case "northwest": $x = $left; $y = $top; break;
case "north": $x = $x_center; $y = $top; break;
case "northeast": $x = $right; $y = $top; break;
case "west": $x = $left; $y = $y_center; break;
case "center": $x = $x_center; $y = $y_center; break;
case "east": $x = $right; $y = $y_center; break;
case "southwest": $x = $left; $y = $bottom; break;
case "south": $x = $x_center; $y = $bottom; break;
case "southeast": $x = $right; $y = $bottom; break;
}
Image::factory($input_file)
->composite($options["file"], $x, $y, $options["transparency"])
->quality(module::get_var("gallery", "image_quality"))
->save($output_file);
module::event("graphics_composite_completed", $input_file, $output_file, $options);
} catch (ErrorException $e) {
Kohana::log("error", $e->get_message());
}
}
}
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