Version 1

[yaffs-website] / web / core / modules / system / src / Plugin / ImageToolkit / Operation / gd / Resize.php

diff --git a/web/core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Resize.php b/web/core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Resize.php
new file mode 100644 (file)
index 0000000..155bef2
--- /dev/null
+++ b/web/core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Resize.php
@@ -0,0 +1,81 @@
+<?php
+
+namespace Drupal\system\Plugin\ImageToolkit\Operation\gd;
+
+/**
+ * Defines GD2 resize operation.
+ *
+ * @ImageToolkitOperation(
+ *   id = "gd_resize",
+ *   toolkit = "gd",
+ *   operation = "resize",
+ *   label = @Translation("Resize"),
+ *   description = @Translation("Resizes an image to the given dimensions (ignoring aspect ratio).")
+ * )
+ */
+class Resize extends GDImageToolkitOperationBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function arguments() {
+    return [
+      'width' => [
+        'description' => 'The new width of the resized image, in pixels',
+      ],
+      'height' => [
+        'description' => 'The new height of the resized image, in pixels',
+      ],
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function validateArguments(array $arguments) {
+    // Assure integers for all arguments.
+    $arguments['width'] = (int) round($arguments['width']);
+    $arguments['height'] = (int) round($arguments['height']);
+
+    // Fail when width or height are 0 or negative.
+    if ($arguments['width'] <= 0) {
+      throw new \InvalidArgumentException("Invalid width ('{$arguments['width']}') specified for the image 'resize' operation");
+    }
+    if ($arguments['height'] <= 0) {
+      throw new \InvalidArgumentException("Invalid height ('{$arguments['height']}') specified for the image 'resize' operation");
+    }
+
+    return $arguments;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function execute(array $arguments = []) {
+    // Create a new resource of the required dimensions, and copy and resize
+    // the original resource on it with resampling. Destroy the original
+    // resource upon success.
+    $original_resource = $this->getToolkit()->getResource();
+    $data = [
+      'width' => $arguments['width'],
+      'height' => $arguments['height'],
+      'extension' => image_type_to_extension($this->getToolkit()->getType(), FALSE),
+      'transparent_color' => $this->getToolkit()->getTransparentColor(),
+      'is_temp' => TRUE,
+    ];
+    if ($this->getToolkit()->apply('create_new', $data)) {
+      if (imagecopyresampled($this->getToolkit()->getResource(), $original_resource, 0, 0, 0, 0, $arguments['width'], $arguments['height'], imagesx($original_resource), imagesy($original_resource))) {
+        imagedestroy($original_resource);
+        return TRUE;
+      }
+      else {
+        // In case of failure, destroy the temporary resource and restore
+        // the original one.
+        imagedestroy($this->getToolkit()->getResource());
+        $this->getToolkit()->setResource($original_resource);
+      }
+    }
+    return FALSE;
+  }
+
+}