[Improvement]: Add thumbnail option to use Cropbox (#1018)

Author: kingjia90

public/js/pimcore/settings/thumbnail/item.js

@@ -178,6 +178,16 @@ pimcore.settings.thumbnail.item = Class.create({
                         xtype: "container",
                         html: "<small>(" + t("rasterize_svg_info_text") + ")</small>",
                         style: "margin-bottom: 20px"
+                    }, {
+                        xtype: "checkbox",
+                        name: "useCropBox",
+                        style: "margin-bottom:0",
+                        boxLabel: t("use_cropbox") + " (Ghostscript)",
+                        checked: this.data.useCropBox
+                    }, {
+                        xtype: "container",
+                        html: "<small>(" + t("use_cropbox_info_text") + ")</small>",
+                        style: "margin-bottom: 20px"
                     }, {
                         xtype: "checkbox",
                         name: "preserveAnimation",

translations/admin_ext.en.yaml

@@ -185,6 +185,10 @@ rasterize_svg: Rasterize SVGs
 rasterize_svg_info_text: >-
     SVGs get automatically rasterized when a transformation other than resize or
     scale by width/height is used.
+use_cropbox: Use Cropbox
+use_cropbox_info_text: >-
+    Sets the page size to the CropBox rather than the MediaBox, useful to exclude
+    some margins and non-content areas.
 preserve_animation: Preserve animations for GIF
 preserve_animation_info_text: >-
     Supported transformations are: Frame, Cover, Contain, Resize, ScaleByWidth,