1 files changed, 30 insertions, 0 deletions
diff --git a/public/javascripts/zoom.js b/public/javascripts/zoom.js
new file mode 100644
index 0000000..59b80db
--- /dev/null
+++ b/public/javascripts/zoom.js
@@ -0,0 +1,30 @@
+const schedule = require('./schedule')
+
+const self = {}
+
+self._nodes = {
+  body: document.body
+}
+
+self._handleResize = function () {
+  // the table node may not exist before this function is called
+  const tableNode = document.querySelector('center > table')
+
+  // infact, it may not even exist when this function is called.
+  if (!tableNode) return
+
+  const tableWidth = tableNode.getBoundingClientRect().width
+  const tableGoalWidth = self._nodes.body.getBoundingClientRect().width * 0.9
+  const zoomFactor = tableGoalWidth / tableWidth
+
+  if (zoomFactor < 1) {
+    tableNode.style.zoom = `${zoomFactor}`
+  } else {
+    tableNode.style.zoom = `1`
+  }
+}
+
+schedule.on('load', self._handleResize)
+window.addEventListener('resize', self._handleResize)
+
+module.exports = self