fix(panOnScroll): normalize scroll speed in different browsers closes #665

2020-11-09 12:39:21 +01:00
parent c9267a1a28
commit cf34c8f48e
1 changed files with 7 additions and 2 deletions
@@ -75,11 +75,16 @@ const ZoomPane = ({
            event.stopImmediatePropagation();

            const currentZoom = d3Selection.property('__zoom').k || 1;
+            // increase scroll speed in firefox
+            // firefox: deltaMode === 1; chrome: deltaMode === 0
+            const deltaNormalize = event.deltaMode === 1 ? 20 : 1;
+            const deltaX = event.deltaX * deltaNormalize;
+            const deltaY = event.deltaY * deltaNormalize;

            d3Zoom.translateBy(
              d3Selection,
-              (event.deltaX / currentZoom) * panOnScrollSpeed,
-              (event.deltaY / currentZoom) * panOnScrollSpeed
+              (deltaX / currentZoom) * panOnScrollSpeed,
+              (deltaY / currentZoom) * panOnScrollSpeed
            );
          })
          .on('wheel.zoom', null);