data: dimensions utility

1 files changed, 10 insertions, 0 deletions

diff --git a/src/data/things/thing.js b/src/data/things/thing.js
index 9e7f940f..0484b589 100644
--- a/src/data/things/thing.js
+++ b/src/data/things/thing.js
@@ -25,6 +25,7 @@ import {
   isColor,
   isContributionList,
   isDate,
+  isDimensions,
   isDirectory,
   isFileExtension,
   isName,
@@ -122,6 +123,15 @@ export function fileExtension(defaultFileExtension = null) {
   };
 }
 
+// Plain ol' image dimensions. This is a two-item array of positive integers,
+// corresponding to width and height respectively.
+export function dimensions() {
+  return {
+    flags: {update: true, expose: true},
+    update: {validate: isDimensions},
+  };
+}
+
 // Straightforward flag descriptor for a variety of property purposes.
 // Provide a default value, true or false!
 export function flag(defaultValue = false) {