feat(shortcut): add ctrl + mouse wheel to zoom in/out, closes #2011 (#2533)

apps/readest-app/src/app/reader/hooks/useIframeEvents.ts

@@ -3,6 +3,7 @@ import { useReaderStore } from '@/store/readerStore';
 import { useBookDataStore } from '@/store/bookDataStore';
 import { debounce } from '@/utils/debounce';
 import { ScrollSource } from './usePagination';
+import { eventDispatcher } from '@/utils/event';
 
 export const useMouseEvent = (
   bookKey: string,
@@ -19,7 +20,15 @@ export const useMouseEvent = (
           debounceScroll('mouse', -msg.data.deltaY, 0);
         }
         if (msg.data.type === 'iframe-wheel') {
-          debounceFlip(msg);
+          if (msg.data.ctrlKey) {
+            if (msg.data.deltaY > 0) {
+              eventDispatcher.dispatch('zoom-out', { factor: Math.abs(msg.data.deltaY) / 100 });
+            } else if (msg.data.deltaY < 0) {
+              eventDispatcher.dispatch('zoom-in', { factor: Math.abs(msg.data.deltaY) / 100 });
+            }
+          } else {
+            debounceFlip(msg);
+          }
         } else {
           handlePageFlip(msg);
         }