Add KeyDialog class

This will take care of reading user input.
TODO: Correct mouse buttons values, they do not match Xtest values.

src/CMakeLists.txt

@@ -17,6 +17,7 @@ set(qjoypad_SOURCES
 	joypadw.cpp
 	joyslider.cpp
 	keycode.cpp
+	keydialog.cpp
 	layout.cpp
 	layout_edit.cpp
 	main.cpp
@@ -36,6 +37,7 @@ set(qjoypad_QOBJECT_HEADERS
 	joypadw.h
 	joyslider.h
 	keycode.h
+	keydialog.hpp
 	layout_edit.h
 	layout.h
 	quickset.h)

src/keydialog.cpp

@@ -0,0 +1,74 @@
+#include "keydialog.hpp"
+
+#include <QGuiApplication>
+#include <QPointer>
+
+KeyDialog::KeyDialog( const QString& button, bool m, QWidget* parent ) :
+QDialog( parent ),
+m_acceptMouse( m ),
+m_text( this ),
+m_isMouse( false ),
+m_value( 0 )
+{
+    setWindowTitle( "Choose a key" );
+    m_text.setText( QString( "Choose a new key %1for %2\n(Ctrl-X for no key)" ).
+            arg( m ? "or mouse button " : "" ).arg( button ) );
+    m_text.adjustSize();
+    setFixedSize( m_text.width() + 20, m_text.height() + 20 );
+    m_text.move( 10, 10 );
+}
+
+int KeyDialog::getKey( const QString& button, bool acceptMouse, bool* mouseOut, QWidget* parent ) {
+    bool isMouse = false;
+    quint32 value = 0;
+
+    QPointer<KeyDialog> dialog = new KeyDialog( button, acceptMouse, parent );
+    if ( dialog->exec() != QDialog::Accepted ) {
+        delete dialog;
+        return -1;
+    }
+    if ( !dialog ) {
+        return -1;
+    }
+
+    isMouse = dialog->m_isMouse;
+    value = dialog->m_value;
+    delete dialog;
+
+    if ( mouseOut ) {
+        *mouseOut = isMouse;
+    }
+    return value;
+}
+
+void KeyDialog::keyReleaseEvent( QKeyEvent* event ) {
+    if ( event->key() != Qt::Key_Control ) {
+        return;
+    }
+    m_value = event->nativeScanCode();
+    m_isMouse = false;
+    accept();
+}
+
+void KeyDialog::keyPressEvent( QKeyEvent* event ) {
+    if ( event->key() == Qt::Key_Control ) {
+        return;
+    }
+    if ( event->key() == Qt::Key_X && QGuiApplication::keyboardModifiers() == Qt::ControlModifier ) {
+        m_value = 0;
+    } else {
+        m_value = event->nativeScanCode();
+    }
+    m_isMouse = false;
+    accept();
+}
+
+void KeyDialog::mouseReleaseEvent( QMouseEvent* event ) {
+    if ( !m_acceptMouse ) {
+        return;
+    }
+    // TODO: correct Qt::MouseButton to XTst equivalent
+    m_value = event->button();
+    m_isMouse = true;
+    accept();
+}

src/keydialog.hpp

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <QDialog>
+#include <QString>
+#include <QLabel>
+#include <QKeyEvent>
+#include <QMouseEvent>
+
+class KeyDialog : public QDialog {
+    Q_OBJECT
+
+protected:
+    bool m_acceptMouse;
+    QLabel m_text;
+
+    bool m_isMouse;
+    quint32 m_value;
+
+    KeyDialog( const QString& button, bool m = false, QWidget* parent = 0 );
+    void keyPressEvent( QKeyEvent* );
+    void keyReleaseEvent( QKeyEvent* );
+    void mouseReleaseEvent( QMouseEvent* );
+
+public:
+    static int getKey( const QString& button, bool acceptMouse = false, bool* mousePressed = 0, QWidget* parent = 0 );
+
+};