From 539031d5b2469a611618f41148b3dd8dc87d2494 Mon Sep 17 00:00:00 2001
From: Leopixelo <leonardgies01@gmail.com>
Date: Wed, 25 Jun 2025 14:24:14 +0200
Subject: [PATCH] do not rescale y axis of graphing window when changing graph
 parameters

---
 re/graphingwindow.cpp | 10 ++++++----
 re/graphingwindow.h   |  2 +-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/re/graphingwindow.cpp b/re/graphingwindow.cpp
index 5934414..647047c 100644
--- a/re/graphingwindow.cpp
+++ b/re/graphingwindow.cpp
@@ -1225,7 +1225,7 @@ void GraphingWindow::showParamsDialog(int idx = -1)
         //create a new graph with the returned parameters.
         GraphParams params;
         thisDialog->getParams(params);
-        createGraph(params);
+        createGraph(params, true, false);
     }
     delete thisDialog;
 }
@@ -1322,7 +1322,7 @@ void GraphingWindow::appendToGraph(GraphParams &params, CANFrame &frame, QVector
     }
 }
 
-void GraphingWindow::createGraph(GraphParams &params, bool createGraphParam)
+void GraphingWindow::createGraph(GraphParams &params, bool createGraphParam, bool recalcY)
 {
     int64_t tempVal; //64 bit temp value.
     double yminval=10000000.0, ymaxval = -1000000.0;
@@ -1561,8 +1561,10 @@ void GraphingWindow::createGraph(GraphParams &params, bool createGraphParam)
         ui->graphingView->xAxis->setRange(xminval, xmaxval);        
         ui->graphingView->axisRect()->setupFullAxesBox();
     }
-    //always recalculate Y range so that new graphs actually show up in view
-    ui->graphingView->yAxis->setRange(yminval, ymaxval);
+    //almost always recalculate Y range so that new graphs actually show up in view
+    if (recalcY) {
+        ui->graphingView->yAxis->setRange(yminval, ymaxval);
+    }
 
     ui->graphingView->replot();
 }
diff --git a/re/graphingwindow.h b/re/graphingwindow.h
index 0735153..d82584a 100644
--- a/re/graphingwindow.h
+++ b/re/graphingwindow.h
@@ -56,7 +56,7 @@ public:
     void showEvent(QShowEvent*);
 
 public slots:
-    void createGraph(GraphParams &params, bool createGraphParam = true);
+    void createGraph(GraphParams &params, bool createGraphParam = true, bool recalcY = true);
 
 private slots:
     void titleDoubleClick(QMouseEvent *event, QCPTextElement *title);