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-rw-r--r--ext/mixed/js/display.js20
1 files changed, 20 insertions, 0 deletions
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index 75ee339a..302a6280 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -29,6 +29,7 @@ class Display {
this.audioCache = {};
$(document).keydown(this.onKeyDown.bind(this));
+ $(document).on('wheel', this.onWheel.bind(this));
}
onError(error) {
@@ -202,6 +203,25 @@ class Display {
}
}
+ onWheel(e) {
+ const event = e.originalEvent;
+ const handler = () => {
+ if (event.altKey) {
+ if (event.deltaY < 0) { // scroll up
+ this.entryScrollIntoView(this.index - 1, true);
+ return true;
+ } else if (event.deltaY > 0) { // scroll down
+ this.entryScrollIntoView(this.index + 1, true);
+ return true;
+ }
+ }
+ };
+
+ if (handler()) {
+ event.preventDefault();
+ }
+ }
+
async termsShow(definitions, options, context) {
try {
window.focus();