# HG changeset patch
# User Chris Cannam
# Date 1585307096 0
# Node ID bbc3f537564c340a20ced47c6d79c3f08af3e8bf
# Parent  073ef72e8e60d8e37a8dee420c53c1bc9c01c9b1
Add context menu to Thumbwheel

diff -r 073ef72e8e60 -r bbc3f537564c widgets/Thumbwheel.cpp
--- a/widgets/Thumbwheel.cpp	Fri Mar 27 11:04:48 2020 +0000
+++ b/widgets/Thumbwheel.cpp	Fri Mar 27 11:04:56 2020 +0000
@@ -24,6 +24,9 @@
 #include <QInputDialog>
 #include <QPainter>
 #include <QPainterPath>
+#include <QMenu>
+
+#include "MenuTitle.h"
 
 #include <cmath>
 #include <iostream>
@@ -46,13 +49,51 @@
     m_atDefault(true),
     m_clickRotation(m_rotation),
     m_showTooltip(true),
+    m_provideContextMenu(true),
+    m_lastContextMenu(nullptr),
     m_rangeMapper(nullptr)
 {
+    setContextMenuPolicy(Qt::CustomContextMenu);
+    connect(this, SIGNAL(customContextMenuRequested(const QPoint &)),
+            this, SLOT(contextMenuRequested(const QPoint &)));
 }
 
 Thumbwheel::~Thumbwheel()
 {
     delete m_rangeMapper;
+    delete m_lastContextMenu;
+}
+
+void
+Thumbwheel::contextMenuRequested(const QPoint &pos)
+{
+    if (!m_provideContextMenu) {
+        return;
+    }
+    
+    if (m_lastContextMenu) {
+        delete m_lastContextMenu;
+    }
+    
+    QMenu *m = new QMenu;
+
+    if (m_title == "") {
+        MenuTitle::addTitle(m, tr("Thumbwheel"));
+    } else {        
+        MenuTitle::addTitle(m, m_title);
+    }
+
+    m->addAction(tr("&Edit..."),
+                 [=]() {
+                     edit();
+                 });
+    m->addAction(tr("&Reset to Default"),
+                 [=]() {
+                     resetToDefault();
+                 });
+
+    m->popup(mapToGlobal(pos));
+    m_lastContextMenu = m;
 }
 
 void
@@ -183,7 +224,11 @@
 
     m_rotation = float(m_value - m_min) / float(m_max - m_min);
     m_cache = QImage();
-    if (isVisible()) update();
+
+    if (isVisible()) {
+        update();
+        updateTitle();
+    }
 }
 
 void
@@ -223,17 +268,30 @@
         }
     }
 
+    updateTitle();
+}
+
+void
+Thumbwheel::updateTitle()
+{    
+    QString name = objectName();
+    QString unit = "";
+    QString text;
+    double mappedValue = getMappedValue();
+
+    if (m_rangeMapper) unit = m_rangeMapper->getUnit();
+    if (name != "") {
+        text = tr("%1: %2%3").arg(name).arg(mappedValue).arg(unit);
+    } else {
+        text = tr("%2%3").arg(mappedValue).arg(unit);
+    }
+
+    m_title = text;
+
     if (m_showTooltip) {
-        QString name = objectName();
-        QString unit = "";
-        QString text;
-        if (m_rangeMapper) unit = m_rangeMapper->getUnit();
-        if (name != "") {
-            text = tr("%1: %2%3").arg(name).arg(m_mappedValue).arg(unit);
-        } else {
-            text = tr("%2%3").arg(m_mappedValue).arg(unit);
-        }
         setToolTip(text);
+    } else {
+        setToolTip("");
     }
 }
 
@@ -323,6 +381,12 @@
         return;
     }
 
+    edit();
+}
+
+void
+Thumbwheel::edit()
+{
     bool ok = false;
 
     if (m_rangeMapper) {
diff -r 073ef72e8e60 -r bbc3f537564c widgets/Thumbwheel.h
--- a/widgets/Thumbwheel.h	Fri Mar 27 11:04:48 2020 +0000
+++ b/widgets/Thumbwheel.h	Fri Mar 27 11:04:56 2020 +0000
@@ -24,6 +24,7 @@
 #include "WheelCounter.h"
 
 class RangeMapper;
+class QMenu;
 
 class Thumbwheel : public QWidget
 {
@@ -46,6 +47,7 @@
     double getMappedValue() const;
 
     void setShowToolTip(bool show);
+    void setProvideContextMenu(bool provide);
 
     QSize sizeHint() const override;
 
@@ -66,9 +68,12 @@
     void setMappedValue(double mappedValue);
     void scroll(bool up);
     void resetToDefault();
+    void edit();
 
 protected slots:
     void updateMappedValue(int value);
+    void updateTitle();
+    void contextMenuRequested(const QPoint &);
 
 protected:
     void mousePressEvent(QMouseEvent *e) override;
@@ -96,6 +101,9 @@
     QPoint m_clickPos;
     float m_clickRotation;
     bool m_showTooltip;
+    bool m_provideContextMenu;
+    QString m_title;
+    QMenu *m_lastContextMenu;
     RangeMapper *m_rangeMapper;
     QImage m_cache;
     WheelCounter m_wheelCounter;