From 7e7dd5244e8d26485ad7950a89c04c98c4fef83f Mon Sep 17 00:00:00 2001
From: Andrew <saintruler@gmail.com>
Date: Mon, 11 Mar 2019 21:00:02 +0400
Subject: Initial commit/

---
 frontend/app/utils/scale.js | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 frontend/app/utils/scale.js

(limited to 'frontend/app/utils/scale.js')

diff --git a/frontend/app/utils/scale.js b/frontend/app/utils/scale.js
new file mode 100644
index 0000000..f754d48
--- /dev/null
+++ b/frontend/app/utils/scale.js
@@ -0,0 +1,13 @@
+import { Dimensions } from 'react-native';
+
+const { width, height } = Dimensions.get('window');
+
+// Guideline sizes are based on standard ~5" screen mobile device
+const guidelineBaseWidth = 350;
+const guidelineBaseHeight = 680;
+
+const scale = size => (width / guidelineBaseWidth) * size;
+const scaleVertical = size => (height / guidelineBaseHeight) * size;
+const scaleModerate = (size, factor = 0.5) => size + ((scale(size) - size) * factor);
+
+export { scale, scaleVertical, scaleModerate };
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