Merge pull request #2 from DejaBallard/feat-shortcode

adding shortcode to allow watermarking of images within wysiwyg

_config.php

@@ -0,0 +1,5 @@
+<?php
+use SilverStripe\View\Parsers\ShortcodeParser;
+use Gurucomkz\Watermark\Shortcode;
+ShortcodeParser::get('default')->register('watermark', [Shortcode::class, 'Watermark']);
+

_config/main.yml

@@ -10,6 +10,9 @@ SilverStripe\Assets\Storage\DBFile:
 SilverStripe\Assets\Image:
   extensions:
     - Gurucomkz\Watermark\ImageExtension
+SilverStripe\AssetAdmin\Forms\ImageFormFactory:
+  extensions:
+    - Gurucomkz\Watermark\ImageFormFactoryExtension
 
 SilverStripe\SiteConfig\SiteConfig:
   extensions:

src/Gurucomkz/Watermark/ImageFormFactoryExtension.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Gurucomkz\Watermark;
+
+use SilverStripe\Core\Extension;
+use SilverStripe\Forms\FieldList;
+use SilverStripe\Forms\HTMLReadonlyField;
+/**
+ * FocusPoint Asset Form Factory extension.
+ * Extends the CMS detail form to allow focus point selection.
+ *
+ * @extends Extension
+ */
+class ImageFormFactoryExtension extends Extension
+{
+
+    /**
+     * Add FocusPoint field for selecting focus.
+     */
+    public function updateFormFields(FieldList $fields, $controller, $formName, $context)
+    {
+        $image = isset($context['Record']) ? $context['Record'] : null;
+        if ($image && $image->appCategory() === 'image') {
+            $wmField = HTMLReadonlyField::create(
+                'Watermark Shortcode',
+            )->setValue($this->WatermarkShortCode($image->ID));
+
+            $titleField = $fields->fieldByName('Editor.Details.Title');
+            if ($titleField) {
+                if ($titleField->isReadonly()) $wmField = $wmField->performReadonlyTransformation();
+                $fields->insertAfter(
+                    'Title',
+                    $wmField
+                );
+            }
+
+        }
+    }
+
+    public function WatermarkShortCode($ID){
+        return "[watermark id=" . $ID . "]";
+    }
+}

src/Gurucomkz/Watermark/Shortcode.php

@@ -0,0 +1,28 @@
+<?php
+namespace Gurucomkz\Watermark;
+
+use PageController;
+use SilverStripe\Control\Controller;
+use SilverStripe\Assets\Image;
+
+class Shortcode
+{
+
+    public static function Watermark($arguments, $content = null)
+    {
+
+        if (!isset($arguments['file'])) {
+            return '';
+        }
+
+        $image = Image::get()->filter("Name", $arguments['file'])->first();
+        if (!isset($image)) {
+            return '';
+        }
+        if (isset($arguments['position'])) {
+            return $image->Watermark($arguments['position']);
+        } else {
+            return $image->Watermark();
+        }
+    }
+}