Update popper packages

2020-01-31 16:44:33 +01:00
parent cbb68b36a7
commit 4b8ed3219b
485 changed files with 20619 additions and 13310 deletions
@@ -0,0 +1,50 @@
+/**
+ * @function
+ * @memberof Popper.Utils
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Boolean} shouldRound - If the offsets should be rounded at all
+ * @returns {Object} The popper's position offsets rounded
+ *
+ * The tale of pixel-perfect positioning. It's still not 100% perfect, but as
+ * good as it can be within reason.
+ * Discussion here: https://github.com/FezVrasta/popper.js/pull/715
+ *
+ * Low DPI screens cause a popper to be blurry if not using full pixels (Safari
+ * as well on High DPI screens).
+ *
+ * Firefox prefers no rounding for positioning and does not have blurriness on
+ * high DPI screens.
+ *
+ * Only horizontal placement and left/right values need to be considered.
+ */
+export default function getRoundedOffsets(data, shouldRound) {
+  const { popper, reference } = data.offsets;
+  const { round, floor } = Math;
+  const noRound = v => v;
+  
+  const referenceWidth = round(reference.width);
+  const popperWidth = round(popper.width);
+  
+  const isVertical = ['left', 'right'].indexOf(data.placement) !== -1;
+  const isVariation = data.placement.indexOf('-') !== -1;
+  const sameWidthParity = referenceWidth % 2 === popperWidth % 2;
+  const bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;
+
+  const horizontalToInteger = !shouldRound
+    ? noRound
+    : isVertical || isVariation || sameWidthParity
+    ? round
+    : floor;
+  const verticalToInteger = !shouldRound ? noRound : round;
+
+  return {
+    left: horizontalToInteger(
+      bothOddWidth && !isVariation && shouldRound
+        ? popper.left - 1
+        : popper.left
+    ),
+    top: verticalToInteger(popper.top),
+    bottom: verticalToInteger(popper.bottom),
+    right: horizontalToInteger(popper.right),
+  };
+}