Implement basic delay support

The ini file now has two entries for each corner, one for the action to
be performed and one for the interval after which it will be performed
if the mouse doesn't leave the hot corner/edge. This is a little
inelegant, and I'd like to make the ini file nicer at some point.

src/app.cpp

@@ -30,6 +30,7 @@ SOFTWARE.
 #include <QDebug>
 #include <QScreen>
 #include <QFileSystemWatcher>
+#include <QVariant>
 
 #define SENSOR_WIDTH 5
 #define SENSOR_HEIGHT 5
@@ -136,29 +137,40 @@ void
 App::loadSensor(QScreen* screen, QString name, int x, int y, int w, int h)
 {
 
-    QString key = screen->name() + "/" + name;
+    QString action = screen->name() + "/" + name + "-" + "action";
+    QString interval = screen->name() + "/" + name + "-" + "interval";
 
+    if (!settings.contains(interval))
+    {
+        qDebug() << "App::loadSensor() interval for " << name << " not found; setting to 0";
+
+        // set default
+        settings.setValue(interval, QVariant(0));
+    }
 
-    if (!settings.contains(key) )
+    if (!settings.contains(action))
     {
-        qDebug() << "App::loadSensor() key " << name << " not found";
+        qDebug() << "App::loadSensor() action for " << name << " not found; creating empty key";
 
-        // restore missing key
-        settings.setValue(key, QString());
+        // restore missing action
+        settings.setValue(action, QString());
         return;
     }
 
-    if (settings.value(key).toString().isEmpty())
+    if (settings.value(action).toString().isEmpty())
     {
-        qDebug() << "App::loadSensor() key " << name << " is empty";
+        qDebug() << "App::loadSensor() action for " << name << " is empty";
         return;
     }
 
 
     // create sensor and save in list so we can delete all sensors on delete
 
-    sensors.append( new Sensor(x, y, w, h, settings.value(key).toString()) );
+    qDebug() << "App::loadSensor() action for " << name << " is " << settings.value(action).toString();
+    qDebug() << "App::loadSensor() interval for " << name << " is " << settings.value(interval).toInt();
+
+    sensors.append( new Sensor(x, y, w, h, settings.value(action).toString(), settings.value(interval).toInt()) );
 }
 
 
-} // namespace
+} // namespace

src/sensor.cpp

@@ -34,12 +34,18 @@ SOFTWARE.
 namespace Lead {
 
 
-Sensor::Sensor(int x, int y, int w, int h, QString action):
-    QWidget()
+Sensor::Sensor(int x, int y, int w, int h, QString action, int interval):
+    QWidget(),
+    action(action),
+    interval(interval)
 {
-    qDebug() << "lead::Sensor() " << x << "," << y << "," << w << "," << h << " : " << action;
+    qDebug() << "lead::Sensor() " << x << "," << y << "," << w << "," << h << " : action=" << action << " : interval=" << interval;
 
-    this->action = action;    
+    this->timer = new QTimer(this);
+    this->timer->setSingleShot(true);
+    this->timer->setInterval(interval);
+
+    connect(this->timer, SIGNAL(timeout()), this, SLOT(activate()));
 
     //setStyleSheet("background-color:red;");
     setGeometry(x, y, w, h);    
@@ -51,13 +57,33 @@ Sensor::Sensor(int x, int y, int w, int h, QString action):
 
 
 Sensor::~Sensor()
-{}
+{
+    delete this->timer;
+}
 
 
 void
 Sensor::enterEvent(QEvent * event)
 {
-    qDebug() << "lead::Sensor::enterEvent() " << this->x() << ":" << this->y() << " action: " << this->action;
+    qDebug() << "lead::Sensor::enterEvent() " << this->x() << ":" << this->y() << " interval: " << this->interval;
+
+    this->timer->start();
+}
+
+
+void
+Sensor::leaveEvent(QEvent * event)
+{
+    qDebug() << "lead::Sensor::leaveEvent() " << this->x() << ":" << this->y() << " interval: " << this->interval;
+
+    this->timer->stop();
+}
+
+
+void
+Sensor::activate() 
+{
+    qDebug() << "lead::Sensor::activate() " << this->x() << ":" << this->y() << " action: " << this->action;
 
     QProcess::startDetached(action);
 }

src/sensor.h

@@ -30,6 +30,7 @@ SOFTWARE.
 
 #include <QWidget>
 #include <QScreen>
+#include <QTimer>
 
 
 namespace Lead {
@@ -40,14 +41,21 @@ class Sensor : public QWidget
     Q_OBJECT
 
 public:
-    explicit Sensor(int x, int y, int w, int h, QString action);
+    explicit Sensor(int x, int y, int w, int h, QString action, int interval);
     ~Sensor();
 
 protected:
     void enterEvent(QEvent * event);
+    void leaveEvent(QEvent * event);
 
 private:
     QString action;
+    QTimer *timer;
+    int interval;
+
+public slots:
+    void activate();
+
 
 };