424 lines
15 KiB
PHP
424 lines
15 KiB
PHP
<?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 graphics_Core {
|
|
private static $init;
|
|
|
|
/**
|
|
* Add a new graphics rule.
|
|
*
|
|
* Rules are applied to targets (thumbnails and resizes) in priority order. Rules are functions
|
|
* in the graphics class. So for example, the following rule:
|
|
*
|
|
* graphics::add_rule("gallery", "thumb", "resize",
|
|
* array("width" => 200, "height" => 200, "master" => Image::AUTO), 100);
|
|
*
|
|
* Specifies that "gallery" is adding a rule to resize thumbnails down to a max of 200px on
|
|
* the longest side. The gallery module adds default rules at a priority of 100. You can set
|
|
* higher and lower priorities to perform operations before or after this fires.
|
|
*
|
|
* @param string $module_name the module that added the rule
|
|
* @param string $target the target for this operation ("thumb" or "resize")
|
|
* @param string $operation the name of the operation
|
|
* @param array $args arguments to the operation
|
|
* @param integer $priority the priority for this rule (lower priorities are run first)
|
|
*/
|
|
static function add_rule($module_name, $target, $operation, $args, $priority) {
|
|
$rule = ORM::factory("graphics_rule");
|
|
$rule->module_name = $module_name;
|
|
$rule->target = $target;
|
|
$rule->operation = $operation;
|
|
$rule->priority = $priority;
|
|
$rule->args = serialize($args);
|
|
$rule->active = true;
|
|
$rule->save();
|
|
|
|
self::mark_dirty($target == "thumb", $target == "resize");
|
|
}
|
|
|
|
/**
|
|
* Remove any matching graphics rules
|
|
* @param string $module_name the module that added the rule
|
|
* @param string $target the target for this operation ("thumb" or "resize")
|
|
* @param string $operation the name of the operation
|
|
*/
|
|
static function remove_rule($module_name, $target, $operation) {
|
|
ORM::factory("graphics_rule")
|
|
->where("module_name", $module_name)
|
|
->where("target", $target)
|
|
->where("operation", $operation)
|
|
->delete_all();
|
|
|
|
self::mark_dirty($target == "thumb", $target == "resize");
|
|
}
|
|
|
|
/**
|
|
* Remove all rules for this module
|
|
* @param string $module_name
|
|
*/
|
|
static function remove_rules($module_name) {
|
|
$status = Database::instance()->delete("graphics_rules", array("module_name" => $module_name));
|
|
if (count($status)) {
|
|
self::mark_dirty(true, true);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Activate the rules for this module, typically done when the module itself is deactivated.
|
|
* Note that this does not mark images as dirty so that if you deactivate and reactivate a
|
|
* module it won't cause all of your images to suddenly require a rebuild.
|
|
*/
|
|
static function activate_rules($module_name) {
|
|
Database::instance()
|
|
->update("graphics_rules",array("active" => true), array("module_name" => $module_name));
|
|
}
|
|
|
|
/**
|
|
* Deactivate the rules for this module, typically done when the module itself is deactivated.
|
|
* Note that this does not mark images as dirty so that if you deactivate and reactivate a
|
|
* module it won't cause all of your images to suddenly require a rebuild.
|
|
*/
|
|
static function deactivate_rules($module_name) {
|
|
Database::instance()
|
|
->update("graphics_rules",array("active" => false), array("module_name" => $module_name));
|
|
}
|
|
|
|
/**
|
|
* Rebuild the thumb and resize for the given item.
|
|
* @param Item_Model $item
|
|
* @return true on successful generation
|
|
*/
|
|
static function generate($item) {
|
|
if ($item->is_album()) {
|
|
if (!$cover = $item->album_cover()) {
|
|
return false;
|
|
}
|
|
$input_file = $cover->file_path();
|
|
$input_item = $cover;
|
|
} else {
|
|
$input_file = $item->file_path();
|
|
$input_item = $item;
|
|
}
|
|
|
|
if ($item->thumb_dirty) {
|
|
$ops["thumb"] = $item->thumb_path();
|
|
}
|
|
if ($item->resize_dirty && !$item->is_album() && !$item->is_movie()) {
|
|
$ops["resize"] = $item->resize_path();
|
|
}
|
|
|
|
if (empty($ops)) {
|
|
$item->thumb_dirty = 0;
|
|
$item->resize_dirty = 0;
|
|
$item->save();
|
|
return true;
|
|
}
|
|
|
|
try {
|
|
foreach ($ops as $target => $output_file) {
|
|
if ($input_item->is_movie()) {
|
|
// Convert the movie to a JPG first
|
|
$output_file = preg_replace("/...$/", "jpg", $output_file);
|
|
try {
|
|
movie::extract_frame($input_file, $output_file);
|
|
} catch (Exception $e) {
|
|
// Assuming this is MISSING_FFMPEG for now
|
|
copy(MODPATH . "gallery/images/missing_movie.png", $output_file);
|
|
}
|
|
$working_file = $output_file;
|
|
} else {
|
|
$working_file = $input_file;
|
|
}
|
|
|
|
foreach (ORM::factory("graphics_rule")
|
|
->where("target", $target)
|
|
->where("active", true)
|
|
->orderby("priority", "asc")
|
|
->find_all() as $rule) {
|
|
$args = array($working_file, $output_file, unserialize($rule->args));
|
|
call_user_func_array(array("graphics", $rule->operation), $args);
|
|
$working_file = $output_file;
|
|
}
|
|
}
|
|
|
|
if (!empty($ops["thumb"])) {
|
|
$dims = getimagesize($item->thumb_path());
|
|
$item->thumb_width = $dims[0];
|
|
$item->thumb_height = $dims[1];
|
|
$item->thumb_dirty = 0;
|
|
}
|
|
|
|
if (!empty($ops["resize"])) {
|
|
$dims = getimagesize($item->resize_path());
|
|
$item->resize_width = $dims[0];
|
|
$item->resize_height = $dims[1];
|
|
$item->resize_dirty = 0;
|
|
}
|
|
$item->save();
|
|
} catch (Exception $e) {
|
|
// Something went wrong rebuilding the image. Leave it dirty and move on.
|
|
// @todo we should handle this better.
|
|
Kohana::log("error", "Caught exception rebuilding image: {$item->title}\n" .
|
|
$e->getMessage() . "\n" . $e->getTraceAsString());
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Resize an image. Valid options are width, height and master. Master is one of the Image
|
|
* master dimension constants.
|
|
*
|
|
* @param string $input_file
|
|
* @param string $output_file
|
|
* @param array $options
|
|
*/
|
|
static function resize($input_file, $output_file, $options) {
|
|
if (!self::$init) {
|
|
self::init_toolkit();
|
|
}
|
|
|
|
if (@filesize($input_file) == 0) {
|
|
throw new Exception("@todo EMPTY_INPUT_FILE");
|
|
}
|
|
|
|
$dims = getimagesize($input_file);
|
|
if (max($dims[0], $dims[1]) < min($options["width"], $options["height"])) {
|
|
// Image would get upscaled; do nothing
|
|
copy($input_file, $output_file);
|
|
} else {
|
|
Image::factory($input_file)
|
|
->resize($options["width"], $options["height"], $options["master"])
|
|
->quality(module::get_var("gallery", "image_quality"))
|
|
->save($output_file);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Rotate an image. Valid options are degrees
|
|
*
|
|
* @param string $input_file
|
|
* @param string $output_file
|
|
* @param array $options
|
|
*/
|
|
static function rotate($input_file, $output_file, $options) {
|
|
if (!self::$init) {
|
|
self::init_toolkit();
|
|
}
|
|
|
|
// BEGIN rWatcher MOD:
|
|
// If $input_file is located in VARPATH/albums/ then assume its a fullsize photo.
|
|
if (strncmp($input_file, VARPATH . "albums/", strlen(VARPATH . "albums/")) == 0) {
|
|
// Figure out where the original copy should be stashed at.
|
|
$temp_path = str_replace(VARPATH . "albums/", "", $input_file);
|
|
$original_image = VARPATH . "original/" . $temp_path;
|
|
$individual_dirs = split("[/\]", $temp_path);
|
|
// If any original file does not already exist, then create a folder structure
|
|
// similar to that found in VARPATH/albums/ and copy the photo over before
|
|
// rotating it.
|
|
if (!file_exists($original_image)) {
|
|
$new_img_path = VARPATH . "original/";
|
|
for($i = 0; $i < count($individual_dirs)-1; $i++) {
|
|
$new_img_path = $new_img_path . "/" . $individual_dirs[$i];
|
|
if(!file_exists($new_img_path)) {
|
|
@mkdir($new_img_path);
|
|
}
|
|
}
|
|
copy($input_file, $original_image);
|
|
}
|
|
}
|
|
// END rWatcher MOD.
|
|
|
|
Image::factory($input_file)
|
|
->quality(module::get_var("gallery", "image_quality"))
|
|
->rotate($options["degrees"])
|
|
->save($output_file);
|
|
}
|
|
|
|
/**
|
|
* 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, $options) {
|
|
if (!self::$init) {
|
|
self::init_toolkit();
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* Return a query result that locates all items with dirty images.
|
|
* @return Database_Result Query result
|
|
*/
|
|
static function find_dirty_images_query() {
|
|
return Database::instance()->query(
|
|
"SELECT `id` FROM {items} " .
|
|
"WHERE ((`thumb_dirty` = 1 AND (`type` <> 'album' OR `album_cover_item_id` IS NOT NULL))" .
|
|
" OR (`resize_dirty` = 1 AND `type` = 'photo')) " .
|
|
" AND `id` != 1");
|
|
}
|
|
|
|
/**
|
|
* Mark thumbnails and resizes as dirty. They will have to be rebuilt.
|
|
*/
|
|
static function mark_dirty($thumbs, $resizes) {
|
|
if ($thumbs || $resizes) {
|
|
$db = Database::instance();
|
|
$fields = array();
|
|
if ($thumbs) {
|
|
$fields["thumb_dirty"] = 1;
|
|
}
|
|
if ($resizes) {
|
|
$fields["resize_dirty"] = 1;
|
|
}
|
|
$db->update("items", $fields, true);
|
|
}
|
|
|
|
$count = self::find_dirty_images_query()->count();
|
|
if ($count) {
|
|
site_status::warning(
|
|
t2("One of your photos is out of date. <a %attrs>Click here to fix it</a>",
|
|
"%count of your photos are out of date. <a %attrs>Click here to fix them</a>",
|
|
$count,
|
|
array("attrs" => sprintf(
|
|
'href="%s" class="gDialogLink"',
|
|
url::site("admin/maintenance/start/gallery_task::rebuild_dirty_images?csrf=__CSRF__")))),
|
|
"graphics_dirty");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Detect which graphics toolkits are available on this system. Return an array of key value
|
|
* pairs where the key is one of gd, imagemagick, graphicsmagick and the value is information
|
|
* about that toolkit. For GD we return the version string, and for ImageMagick and
|
|
* GraphicsMagick we return the path to the directory containing the appropriate binaries.
|
|
*/
|
|
static function detect_toolkits() {
|
|
$gd = function_exists("gd_info") ? gd_info() : array();
|
|
$exec = function_exists("exec");
|
|
if (!isset($gd["GD Version"])) {
|
|
$gd["GD Version"] = false;
|
|
}
|
|
putenv("PATH=" . getenv("PATH") . ":/usr/local/bin:/opt/local/bin:/opt/bin");
|
|
return array("gd" => $gd,
|
|
"imagemagick" => $exec ? dirname(exec("which convert")) : false,
|
|
"graphicsmagick" => $exec ? dirname(exec("which gm")) : false);
|
|
}
|
|
|
|
/**
|
|
* This needs to be run once, after the initial install, to choose a graphics toolkit.
|
|
*/
|
|
static function choose_default_toolkit() {
|
|
// Detect a graphics toolkit
|
|
$toolkits = graphics::detect_toolkits();
|
|
foreach (array("imagemagick", "graphicsmagick", "gd") as $tk) {
|
|
if ($toolkits[$tk]) {
|
|
module::set_var("gallery", "graphics_toolkit", $tk);
|
|
module::set_var("gallery", "graphics_toolkit_path", $tk == "gd" ? "" : $toolkits[$tk]);
|
|
break;
|
|
}
|
|
}
|
|
if (!module::get_var("gallery", "graphics_toolkit")) {
|
|
site_status::warning(
|
|
t("Graphics toolkit missing! Please <a href=\"%url\">choose a toolkit</a>",
|
|
array("url" => url::site("admin/graphics"))),
|
|
"missing_graphics_toolkit");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Choose which driver the Kohana Image library uses.
|
|
*/
|
|
static function init_toolkit() {
|
|
switch(module::get_var("gallery", "graphics_toolkit")) {
|
|
case "gd":
|
|
Kohana::config_set("image.driver", "GD");
|
|
break;
|
|
|
|
case "imagemagick":
|
|
Kohana::config_set("image.driver", "ImageMagick");
|
|
Kohana::config_set(
|
|
"image.params.directory", module::get_var("gallery", "graphics_toolkit_path"));
|
|
break;
|
|
|
|
case "graphicsmagick":
|
|
Kohana::config_set("image.driver", "GraphicsMagick");
|
|
Kohana::config_set(
|
|
"image.params.directory", module::get_var("gallery", "graphics_toolkit_path"));
|
|
break;
|
|
}
|
|
|
|
self::$init = 1;
|
|
}
|
|
|
|
/**
|
|
* Verify that a specific graphics function is available with the active toolkit.
|
|
* @param string $func (eg rotate, resize)
|
|
* @return boolean
|
|
*/
|
|
static function can($func) {
|
|
if (module::get_var("gallery", "graphics_toolkit") == "gd" &&
|
|
$func == "rotate" &&
|
|
!function_exists("imagerotate")) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|