From a2054ad780813a21abc99736c9d17bcafc1caa15 Mon Sep 17 00:00:00 2001
From: AlexandreRouma <alexandre.rouma@gmail.com>
Date: Sun, 31 Mar 2024 23:00:50 +0200
Subject: [PATCH] fix #1367

---
 core/src/gui/main_window.cpp | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/core/src/gui/main_window.cpp b/core/src/gui/main_window.cpp
index 8ed95324..de690fc5 100644
--- a/core/src/gui/main_window.cpp
+++ b/core/src/gui/main_window.cpp
@@ -576,20 +576,20 @@ void MainWindow::draw() {
         // Handle scrollwheel
         int wheel = ImGui::GetIO().MouseWheel;
         if (wheel != 0 && (gui::waterfall.mouseInFFT || gui::waterfall.mouseInWaterfall)) {
-            // Select factor depending on modifier keys
-            double interval;
-            if (ImGui::IsKeyDown(ImGuiKey_LeftShift)) {
-                interval = vfo->snapInterval * 10.0;
-            }
-            else if (ImGui::IsKeyDown(ImGuiKey_LeftAlt)) {
-                interval = vfo->snapInterval * 0.1;
-            }
-            else {
-                interval = vfo->snapInterval;
-            }
-
             double nfreq;
             if (vfo != NULL) {
+                // Select factor depending on modifier keys
+                double interval;
+                if (ImGui::IsKeyDown(ImGuiKey_LeftShift)) {
+                    interval = vfo->snapInterval * 10.0;
+                }
+                else if (ImGui::IsKeyDown(ImGuiKey_LeftAlt)) {
+                    interval = vfo->snapInterval * 0.1;
+                }
+                else {
+                    interval = vfo->snapInterval;
+                }
+
                 nfreq = gui::waterfall.getCenterFrequency() + vfo->generalOffset + (interval * wheel);
                 nfreq = roundl(nfreq / interval) * interval;
             }