commit 4b82406f8506129b8565aea9bcd076d351331f67
parent 7b2171e284b96f92f412bb4fbe692760b399b2cf
Author: markseu <mark2011@mayberg.se>
Date: Sat, 1 Oct 2016 16:40:42 +0200
System update (installation with image plugin)
Diffstat:
2 files changed, 194 insertions(+), 0 deletions(-)
diff --git a/media/thumbnails/picture-100x40.jpg b/media/thumbnails/picture-100x40.jpg
Binary files differ.
diff --git a/system/plugins/image.php b/system/plugins/image.php
@@ -0,0 +1,193 @@
+<?php
+// Copyright (c) 2013-2016 Datenstrom, http://datenstrom.se
+// This file may be used and distributed under the terms of the public license.
+
+// Image plugin
+class YellowImage
+{
+ const VERSION = "0.6.7";
+ var $yellow; //access to API
+ var $graphicsLibrary; //graphics library support? (boolean)
+
+ // Handle initialisation
+ function onLoad($yellow)
+ {
+ $this->yellow = $yellow;
+ $this->yellow->config->setDefault("imageThumbnailLocation", "/media/thumbnails/");
+ $this->yellow->config->setDefault("imageThumbnailDir", "media/thumbnails/");
+ $this->yellow->config->setDefault("imageAlt", "Image");
+ $this->yellow->config->setDefault("imageJpegQuality", 80);
+ $this->graphicsLibrary = $this->isGraphicsLibrary();
+ }
+
+ // Handle page content parsing of custom block
+ function onParseContentBlock($page, $name, $text, $shortcut)
+ {
+ $output = null;
+ if($name=="image" && $shortcut)
+ {
+ if(!$this->graphicsLibrary)
+ {
+ $this->yellow->page->error(500, "Plugin 'image' requires GD library with JPG and PNG support!");
+ return $output;
+ }
+ list($name, $alt, $style, $width, $height) = $this->yellow->toolbox->getTextArgs($text);
+ if(!preg_match("/^\w+:/", $name))
+ {
+ if(empty($alt)) $alt = $this->yellow->config->get("imageAlt");
+ if(empty($width)) $width = "100%";
+ if(empty($height)) $height = $width;
+ list($src, $width, $height) = $this->getImageInfo($this->yellow->config->get("imageDir").$name, $width, $height);
+ } else {
+ $src = $this->yellow->lookup->normaliseLocation($name, $page->base, $page->location);
+ $width = $height = 0;
+ }
+ $output = "<img src=\"".htmlspecialchars($src)."\"";
+ if($width && $height) $output .= " width=\"".htmlspecialchars($width)."\" height=\"".htmlspecialchars($height)."\"";
+ if(!empty($alt)) $output .= " alt=\"".htmlspecialchars($alt)."\" title=\"".htmlspecialchars($alt)."\"";
+ if(!empty($style)) $output .= " class=\"".htmlspecialchars($style)."\"";
+ $output .= " />";
+ }
+ return $output;
+ }
+
+ // Handle command
+ function onCommand($args)
+ {
+ list($command) = $args;
+ switch($command)
+ {
+ case "clean": $statusCode = $this->cleanCommand($args); break;
+ default: $statusCode = 0;
+ }
+ return $statusCode;
+ }
+
+ // Clean thumbnails
+ function cleanCommand($args)
+ {
+ $statusCode = 0;
+ list($command, $path) = $args;
+ if($path=="all")
+ {
+ $path = $this->yellow->config->get("imageThumbnailDir");
+ foreach($this->yellow->toolbox->getDirectoryEntries($path, "/.*/", false, false) as $entry)
+ {
+ if(!$this->yellow->toolbox->deleteFile($entry)) $statusCode = 500;
+ }
+ if($statusCode==500) echo "ERROR cleaning thumbnails: Can't delete files in directory '$path'!\n";
+ }
+ return $statusCode;
+ }
+
+ // Return image info, create thumbnail on demand
+ function getImageInfo($fileName, $widthOutput, $heightOutput)
+ {
+ $fileNameShort = substru($fileName, strlenu($this->yellow->config->get("imageDir")));
+ list($widthInput, $heightInput, $type) = $this->yellow->toolbox->detectImageInfo($fileName);
+ $widthOutput = $this->convertValueAndUnit($widthOutput, $widthInput);
+ $heightOutput = $this->convertValueAndUnit($heightOutput, $heightInput);
+ if(($widthInput==$widthOutput && $heightInput==$heightOutput) || $type=="svg")
+ {
+ $src = $this->yellow->config->get("serverBase").$this->yellow->config->get("imageLocation").$fileNameShort;
+ $width = $widthOutput; $height = $heightOutput;
+ } else {
+ $fileNameThumb = ltrim(str_replace(array("/", "\\", "."), "-", dirname($fileNameShort)."/".pathinfo($fileName, PATHINFO_FILENAME)), "-");
+ $fileNameThumb .= "-".$widthOutput."x".$heightOutput;
+ $fileNameThumb .= ".".pathinfo($fileName, PATHINFO_EXTENSION);
+ $fileNameOutput = $this->yellow->config->get("imageThumbnailDir").$fileNameThumb;
+ if($this->isFileNotUpdated($fileName, $fileNameOutput))
+ {
+ $image = $this->loadImage($fileName, $type);
+ $image = $this->resizeImage($image, $widthInput, $heightInput, $widthOutput, $heightOutput);
+ if(!$this->saveImage($image, $fileNameOutput, $type) ||
+ !$this->yellow->toolbox->modifyFile($fileNameOutput, $this->yellow->toolbox->getFileModified($fileName)))
+ {
+ $this->yellow->page->error(500, "Image '$fileNameOutput' can't be saved!");
+ }
+ }
+ $src = $this->yellow->config->get("serverBase").$this->yellow->config->get("imageThumbnailLocation").$fileNameThumb;
+ list($width, $height) = $this->yellow->toolbox->detectImageInfo($fileNameOutput);
+ }
+ return array($src, $width, $height);
+ }
+
+ // Load image from file
+ function loadImage($fileName, $type)
+ {
+ $image = false;
+ switch($type)
+ {
+ case "jpg": $image = @imagecreatefromjpeg($fileName); break;
+ case "png": $image = @imagecreatefrompng($fileName); break;
+ }
+ return $image;
+ }
+
+ // Create image from scratch
+ function createImage($width, $height)
+ {
+ $image = imagecreatetruecolor($width, $height);
+ imagealphablending($image, false);
+ imagesavealpha($image, true);
+ return $image;
+ }
+
+ // Resize image
+ function resizeImage($image, $widthInput, $heightInput, $widthOutput, $heightOutput)
+ {
+ $widthFit = $widthInput * ($heightOutput / $heightInput);
+ $heightFit = $heightInput * ($widthOutput / $widthInput);
+ $widthDiff = abs($widthOutput - $widthFit);
+ $heightDiff = abs($heightOutput - $heightFit);
+ $imageOutput = $this->createImage($widthOutput, $heightOutput);
+ if($heightFit>$heightOutput)
+ {
+ imagecopyresampled($imageOutput, $image, 0, $heightDiff/-2, 0, 0, $widthOutput, $heightFit, $widthInput, $heightInput);
+ } else {
+ imagecopyresampled($imageOutput, $image, $widthDiff/-2, 0, 0, 0, $widthFit, $heightOutput, $widthInput, $heightInput);
+ }
+ return $imageOutput;
+ }
+
+ // Save image to file
+ function saveImage($image, $fileName, $type)
+ {
+ $ok = false;
+ switch($type)
+ {
+ case "jpg": $ok = @imagejpeg($image, $fileName, $this->yellow->config->get("imageJpegQuality")); break;
+ case "png": $ok = @imagepng($image, $fileName); break;
+ }
+ return $ok;
+ }
+
+ // Return value according to unit
+ function convertValueAndUnit($text, $valueBase)
+ {
+ $value = $unit = "";
+ if(preg_match("/([\d\.]+)(\S*)/", $text, $matches))
+ {
+ $value = $matches[1];
+ $unit = $matches[2];
+ if($unit=="%") $value = $valueBase * $value / 100;
+ }
+ return intval($value);
+ }
+
+ // Check if file needs to be updated
+ function isFileNotUpdated($fileNameInput, $fileNameOutput)
+ {
+ return $this->yellow->toolbox->getFileModified($fileNameInput)!=$this->yellow->toolbox->getFileModified($fileNameOutput);
+ }
+
+ // Check graphics library support
+ function isGraphicsLibrary()
+ {
+ return extension_loaded("gd") && function_exists("gd_info") &&
+ ((imagetypes()&(IMG_JPG|IMG_PNG))==(IMG_JPG|IMG_PNG));
+ }
+}
+
+$yellow->plugins->register("image", "YellowImage", YellowImage::VERSION);
+?>
+\ No newline at end of file
