Commands: use the command key event filter to capture key sequences in the edit command dialog window

sdrgui/gui/commandkeyreceiver.cpp

@@ -39,10 +39,10 @@ bool CommandKeyReceiver::eventFilter(QObject* obj, QEvent* event)
             Qt::KeyboardModifiers keyModifiers;
             keyEventHandler(keyEvent, key, keyModifiers);
             emit capturedKey(key, keyModifiers, false);
-        }
 
-        if (!m_pass) {
+            if (!m_pass) { // do not pass the event
-            return true;
+                return true;
+            }
         }
     }
     else if (m_release && (event->type()==QEvent::KeyRelease))
@@ -56,14 +56,14 @@ bool CommandKeyReceiver::eventFilter(QObject* obj, QEvent* event)
             Qt::KeyboardModifiers keyModifiers;
             keyEventHandler(keyEvent, key, keyModifiers);
             emit capturedKey(key, keyModifiers, true);
-        }
 
-        if (!m_pass) {
+            if (!m_pass) { // do not pass the event
-            return true;
+                return true;
+            }
         }
     }
 
-    return QObject::eventFilter(obj, event);
+    return QObject::eventFilter(obj, event); // pass the event on
 }
 
 void CommandKeyReceiver::keyEventHandler(QKeyEvent *e, Qt::Key& key, Qt::KeyboardModifiers& keyModifiers)

sdrgui/gui/editcommanddialog.cpp

@@ -17,14 +17,12 @@
 #include "editcommanddialog.h"
 #include "ui_editcommanddialog.h"
 #include "commands/command.h"
+#include "commandkeyreceiver.h"
 
 #include <QFileInfo>
 #include <QFileDialog>
-#include <QKeyEvent>
 #include <algorithm>
 
-const std::vector<Qt::Key> EditCommandDialog::m_composeKeys = {Qt::Key_Shift, Qt::Key_Control, Qt::Key_Meta, Qt::Key_Alt, Qt::Key_AltGr};
-
 EditCommandDialog::EditCommandDialog(const QStringList& groups, const QString& group, QWidget* parent) :
     QDialog(parent),
     ui(new Ui::EditCommandDialog),
@@ -35,10 +33,14 @@ EditCommandDialog::EditCommandDialog(const QStringList& groups, const QString& g
     ui->group->lineEdit()->setText(group);
     setKeyAssociate();
     setKeyLabel();
+
+    m_commandKeyReceiver = new CommandKeyReceiver();
+    this->installEventFilter(m_commandKeyReceiver);
 }
 
 EditCommandDialog::~EditCommandDialog()
 {
+    m_commandKeyReceiver->deleteLater();
     delete ui;
 }
 
@@ -153,35 +155,13 @@ void EditCommandDialog::on_keyCapture_toggled(bool checked)
     {
         ui->keyCapture->setFocus();
         ui->keyCapture->setFocusPolicy(Qt::StrongFocus);
+        connect(m_commandKeyReceiver, SIGNAL(capturedKey(Qt::Key, Qt::KeyboardModifiers, bool)),
+                        this, SLOT(commandKeyPressed(Qt::Key, Qt::KeyboardModifiers, bool)));
     }
     else
     {
-        ui->keyCapture->setFocusPolicy(Qt::NoFocus);
+        disconnect(m_commandKeyReceiver, SIGNAL(capturedKey(Qt::Key, Qt::KeyboardModifiers, bool)),
-        ui->keyCapture->clearFocus();
+                        this, SLOT(commandKeyPressed(Qt::Key, Qt::KeyboardModifiers, bool)));
-    }
-}
-
-void EditCommandDialog::keyPressEvent(QKeyEvent *e)
-{
-    if (ui->keyCapture->isChecked() && (!isComposeKey(static_cast<Qt::Key>(e->key()))))
-    {
-        m_key = static_cast<Qt::Key>(e->key());
-
-        if (e->modifiers())
-        {
-            //qDebug("EditCommandDialog::keyPressEvent: has modifiers: %x", QFlags<Qt::KeyboardModifier>::Int(e->modifiers()));
-            m_keyModifiers = e->modifiers();
-        }
-        else
-        {
-            m_keyModifiers = Qt::NoModifier;
-        }
-
-        setKeyAssociate();
-        setKeyLabel();
-        //qDebug("EditCommandDialog::keyPressEvent: key: %x", m_key);
-
-        ui->keyCapture->setChecked(false);
         ui->keyCapture->setFocusPolicy(Qt::NoFocus);
         ui->keyCapture->clearFocus();
     }
@@ -213,12 +193,6 @@ void EditCommandDialog::fromCommand(const Command& command)
     ui->keyRelease->setChecked(command.getRelease());
 }
 
-bool EditCommandDialog::isComposeKey(Qt::Key key)
-{
-    auto it = std::find(m_composeKeys.begin(), m_composeKeys.end(), key);
-    return it != m_composeKeys.end();
-}
-
 void EditCommandDialog::setKeyLabel()
 {
     if (m_key == 0)
@@ -249,3 +223,13 @@ void EditCommandDialog::setKeyAssociate()
         ui->keyAssociate->setEnabled(true);
     }
 }
+
+void EditCommandDialog::commandKeyPressed(Qt::Key key, Qt::KeyboardModifiers keyModifiers, bool release __attribute__((unused)))
+{
+//    qDebug("EditCommandDialog::commandKeyPressed: key: %x", m_key);
+//    qDebug("EditCommandDialog::commandKeyPressed: has modifiers: %x", QFlags<Qt::KeyboardModifier>::Int(keyModifiers));
+    m_key = key;
+    m_keyModifiers = keyModifiers;
+    setKeyLabel();
+    ui->keyCapture->setChecked(false);
+}

sdrgui/gui/editcommanddialog.h

@@ -25,6 +25,7 @@ namespace Ui {
 }
 
 class Command;
+class CommandKeyReceiver;
 
 class EditCommandDialog : public QDialog {
     Q_OBJECT
@@ -56,18 +57,15 @@ private:
     Ui::EditCommandDialog* ui;
     Qt::Key m_key;
     Qt::KeyboardModifiers m_keyModifiers;
+    CommandKeyReceiver *m_commandKeyReceiver;
 
-    virtual void keyPressEvent(QKeyEvent *e);
-    bool isComposeKey(Qt::Key key);
     void setKeyLabel();
     void setKeyAssociate();
 
-    static const std::vector<Qt::Key> m_composeKeys;
-
 private slots:
     void on_showFileDialog_clicked(bool checked);
     void on_keyCapture_toggled(bool checked);
-
+    void commandKeyPressed(Qt::Key key, Qt::KeyboardModifiers keyModifiers, bool release);
 };