- fix: Horizontal scroll with touchpad is not working.

NEWS.md

@@ -2,6 +2,7 @@ Red Panda C++ Version 2.21
 
   - change: The option "Check for stack smashing attacks (-fstack-protector)" is turned off by default in the Debug compiler set settings.
   - fix: Project makefile generated for C files is not correct.
+  - fix: Horizontal scroll with touchpad is not working.
 
 Red Panda C++ Version 2.20
  

libs/qsynedit/qsynedit/qsynedit.cpp

@@ -6326,6 +6326,19 @@ void QSynEdit::wheelEvent(QWheelEvent *event)
             mWheelAccumulatedDeltaY+=120;
             verticalScrollBar()->setValue(verticalScrollBar()->value()+mMouseWheelScrollSpeed);
         }
+
+        if ( (mWheelAccumulatedDeltaX>0 &&event->angleDelta().x()<0)
+             || (mWheelAccumulatedDeltaX<0 &&event->angleDelta().x()>0))
+            mWheelAccumulatedDeltaX=0;
+        mWheelAccumulatedDeltaX+=event->angleDelta().x();
+        while (mWheelAccumulatedDeltaX>=120) {
+            mWheelAccumulatedDeltaX-=120;
+            horizontalScrollBar()->setValue(horizontalScrollBar()->value()-mMouseWheelScrollSpeed);
+        }
+        while (mWheelAccumulatedDeltaX<=-120) {
+            mWheelAccumulatedDeltaX+=120;
+            horizontalScrollBar()->setValue(horizontalScrollBar()->value()+mMouseWheelScrollSpeed);
+        }
     }
     event->accept();
 }