qfc: always ensure at least one point exists

Previously, insertion of the lone point was postponed until opening the
mapping window.

2 files changed, 8 insertions, 2 deletions

diff --git a/spline-widget/functionconfig.cpp b/spline-widget/functionconfig.cpp
index dcc9ca65..33100e07 100644
--- a/spline-widget/functionconfig.cpp
+++ b/spline-widget/functionconfig.cpp
@@ -219,7 +219,11 @@ void Map::loadSettings(QSettings& settings, const QString& title) {
 void Map::saveSettings(QSettings& settings, const QString& title) {
     QMutexLocker foo(&_mutex);
     settings.beginGroup(QString("Curves-%1").arg(title));
-    int max = cur.input.size();
+
+    if (cur.input.size() == 0)
+        cur.input.push_back(QPointF(max_x, max_y));
+
+    const int max = cur.input.size();
     settings.setValue("point-count", max);
 
     for (int i = 0; i < max; i++) {
diff --git a/spline-widget/functionconfig.h b/spline-widget/functionconfig.h
index 97a80cac..145ee14e 100644
--- a/spline-widget/functionconfig.h
+++ b/spline-widget/functionconfig.h
@@ -30,7 +30,7 @@ private:
 
     struct State {
         QList<QPointF> input;
-        std::vector<float> data;        
+        std::vector<float> data;
     };
 
     int precision() const;
@@ -52,6 +52,8 @@ public:
     {
         setMaxInput(maxx);
         setMaxOutput(maxy);
+        if (cur.input.size() == 0)
+            cur.input.push_back(QPointF(maxx, maxy));
         reload();
     }