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Copied from 3.1/modules/rectangle_thumbs

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Bharat Mediratta 2010-11-18 19:31:22 -08:00
parent bd96329e45
commit fa6813d601
3 changed files with 104 additions and 0 deletions
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72
3.0/modules/rectangle_thumbs/helpers/rectangle_thumbs_graphics.php Normal file
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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2010 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 rectangle_thumbs_graphics_Core {
/**
* Crop the input image so that it matches the aspect ratio specified in the
* rectangle_thumbs.aspect_ratio module setting. Focus on the center of the image and crop out
* the biggest piece that we can.
*
* @param string $input_file
* @param string $output_file
* @param array $options
*/
static function crop_to_aspect_ratio($input_file, $output_file, $options) {
graphics::init_toolkit();
if (@filesize($input_file) == 0) {
throw new Exception("@todo EMPTY_INPUT_FILE");
}
list ($desired_width, $desired_height) =
explode(":", module::get_var("rectangle_thumbs", "aspect_ratio"));
$desired_ratio = $desired_width / $desired_height;
// Crop the largest rectangular section we can out of the original image. Start with a
// rectangular section that's guaranteed to be too large, then shrink it horizontally to just
// barely fit. If it's still too tall vertically, shrink both dimensions proportionally until
// the horizontal edge fits as well.
$dims = getimagesize($input_file);
if ($desired_ratio == 1) {
$new_width = $new_height = min($dims[0], $dims[1]);
} else if ($desired_ratio < 1) {
list ($new_width, $new_height) = array($dims[0], $dims[0] / $desired_ratio);
} else {
list ($new_width, $new_height) = array($dims[1] * $desired_ratio, $dims[1]);
}
if ($new_width > $dims[0]) {
// Too wide, scale it down
list ($new_width, $new_height) = array($dims[0], $dims[0] / $desired_ratio);
}
if ($new_height > $dims[1]) {
// Too tall, scale it down some more
$new_width = min($dims[0], $dims[1] * $desired_ratio);
$new_height = $new_width / $desired_ratio;
}
$new_width = round($new_width);
$new_height = round($new_height);
Image::factory($input_file)
->crop($new_width, $new_height)
->quality(module::get_var("gallery", "image_quality"))
->save($output_file);
}
}

29
3.0/modules/rectangle_thumbs/helpers/rectangle_thumbs_installer.php Normal file
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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2010 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 rectangle_thumbs_installer {
static function install() {
// Insert a rule into the thumbnail generation pipeline that converts the source image to the
// right aspect ratio such that when we resize it down, it comes out to the right dimensions.
graphics::add_rule(
"rectangle_thumbs", "thumb", "rectangle_thumbs_graphics::crop_to_aspect_ratio", array(), 50);
module::set_var("rectangle_thumbs", "aspect_ratio", "3:1");
module::set_version("rectangle_thumbs", 1);
}
}

3
3.0/modules/rectangle_thumbs/module.info Normal file
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name = "Rectangle Thumbnails"
description = "Force all thumbnails to be a specific rectangular aspect ratio"
version = 1