Merge pull request #1298 from willcode/feature/clear-waterfall

plotter: clear waterfall using Delete key
gqrx-sdr · Oct 3, 2023 · db7fdc0 · db7fdc0
2 parents 919a90a + 5397bcc
commit db7fdc0
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Showing 5 changed files with 17 additions and 0 deletions.
diff --git a/resources/kbd-shortcuts.txt b/resources/kbd-shortcuts.txt
@@ -12,6 +12,7 @@ Main window actions:
  F11            Toggle full screen mode
  F              Set focus to the frequency controller
  Z              Zero frequency offset
+ Delete         Clear waterfall
  Ctrl+Q         Quit the program
 
 Receiver modes:

diff --git a/resources/news.txt b/resources/news.txt
@@ -1,4 +1,9 @@
 
+    2.17.1: In progress...
+
+       NEW: Delete key clears the waterfall.
+
+
       2.17: Released October 1, 2023
 
        NEW: "Avg" plot mode, which displays average of FFT bins.

diff --git a/src/applications/gqrx/mainwindow.cpp b/src/applications/gqrx/mainwindow.cpp
@@ -172,6 +172,9 @@ MainWindow::MainWindow(const QString& cfgfile, bool edit_conf, QWidget *parent)
     // toggle markers on/off
     auto *toggle_markers_shortcut = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_K), this);
     QObject::connect(toggle_markers_shortcut, &QShortcut::activated, this, &MainWindow::toggleMarkers);
+    // clear waterfall
+    auto *clear_waterfall_shortcut = new QShortcut(Qt::Key_Delete, this);
+    QObject::connect(clear_waterfall_shortcut, SIGNAL(activated()), ui->plotter, SLOT(clearWaterfall()));
 
     setCorner(Qt::TopLeftCorner, Qt::LeftDockWidgetArea);
     setCorner(Qt::TopRightCorner, Qt::RightDockWidgetArea);

diff --git a/src/qtgui/plotter.cpp b/src/qtgui/plotter.cpp
@@ -2455,6 +2455,13 @@ void CPlotter::setMarkers(qint64 a, qint64 b)
     updateOverlay();
 }
 
+void CPlotter::clearWaterfall()
+{
+    if (!m_WaterfallPixmap.isNull()) {
+        m_WaterfallPixmap.fill(Qt::black);
+    }
+}
+
 void CPlotter::calcDivSize (qint64 low, qint64 high, int divswanted, qint64 &adjlow, qint64 &step, int& divs)
 {
     qCDebug(plotter) << "low:" << low;

diff --git a/src/qtgui/plotter.h b/src/qtgui/plotter.h
@@ -181,6 +181,7 @@ public slots:
     void enableBandPlan(bool enable);
     void enableMarkers(bool enabled);
     void setMarkers(qint64 a, qint64 b);
+    void clearWaterfall();
     void updateOverlay();
 
     void setPercent2DScreen(int percent)