fix: touch coordinates with scrolling

fix #135
NetrisTV · Aug 31, 2021 · 4247f2a · 4247f2a
1 parent 7e13d62
commit 4247f2a
Showing 1 changed file with 3 additions and 4 deletions.
diff --git a/src/app/touchHandler/TouchHandler.ts b/src/app/touchHandler/TouchHandler.ts
@@ -209,13 +209,12 @@ export abstract class TouchHandler {
         if (typeof action === 'undefined' || !screenInfo) {
             return null;
         }
-        const htmlTag = document.getElementsByTagName('html')[0] as HTMLElement;
         const { width, height } = screenInfo.videoSize;
         const target: HTMLElement = e.target as HTMLElement;
-        const { scrollTop, scrollLeft } = htmlTag;
+        const rect = target.getBoundingClientRect();
         let { clientWidth, clientHeight } = target;
-        let touchX = e.clientX - target.offsetLeft + scrollLeft;
-        let touchY = e.clientY - target.offsetTop + scrollTop;
+        let touchX = e.clientX - rect.left;
+        let touchY = e.clientY - rect.top;
         let invalid = false;
         if (touchX < 0 || touchX > clientWidth || touchY < 0 || touchY > clientHeight) {
             invalid = true;