Initial commit

Lts/Viewer/SituationMap/Tests/EsriMapTouchTest/gestures.cpp

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+/**
+  * @RDE_HEADER@
+  * Declaration/Definition
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+
+#include "gestures.h"
+
+#include <QtCore/QDebug>
+#include <QtCore/QEvent>
+
+#include <QtWidgets/QWidget>
+
+namespace SituationMap { namespace RB {
+
+  // TabGestureRecognizer
+
+  ApplyGestureRecognizer::ApplyGestureRecognizer() : QGestureRecognizer()
+  {
+  }
+
+  ApplyGestureRecognizer::~ApplyGestureRecognizer()
+  {}
+  
+
+  QGesture * ApplyGestureRecognizer::create( QObject * target )
+  {
+    qDebug() << "ApplyGesture create";
+
+    if (target && target->isWidgetType()) 
+    {
+      ((QWidget*)target)->setAttribute(Qt::WA_AcceptTouchEvents);
+    }
+    return new ApplyGesture();
+  } // TabGestureRecognizer::create
+
+
+  QGestureRecognizer::Result ApplyGestureRecognizer::recognize( QGesture * state, QObject* , QEvent * event)
+  {
+    ApplyGesture      * q  = static_cast<ApplyGesture*>(state);
+    const QTouchEvent * ev = static_cast<const QTouchEvent*>(event);
+
+    QGestureRecognizer::Result result = QGestureRecognizer::CancelGesture;
+
+    switch (event->type()) 
+    {
+      case QEvent::TouchBegin: 
+      {
+        qDebug() << "ApplyGesture begin";
+        q->_position = ev->touchPoints().at(0).pos();
+        q->setHotSpot(ev->touchPoints().at(0).screenPos());
+        q->_tripleTouch = (ev->touchPoints().size() == 3);
+        result = QGestureRecognizer::TriggerGesture;
+      } break;
+    
+      case QEvent::TouchUpdate:
+      case QEvent::TouchEnd: 
+      {
+        if (q->state() != Qt::NoGesture && ev->touchPoints().size() >= 1 && ev->touchPoints().size() <= 3) 
+        {
+          if (ev->touchPoints().size() == 3) q->_tripleTouch = true;
+          qDebug() << "ApplyGesture update _tripleTouch=" <<  q->_tripleTouch;
+          QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
+          QPoint delta = p.pos().toPoint() - p.startPos().toPoint();
+          enum { TapRadius = 40 };
+          if (delta.manhattanLength() <= TapRadius) 
+          {
+            if (event->type() == QEvent::TouchEnd)
+            {
+              result = (q->_tripleTouch) ? QGestureRecognizer::FinishGesture : QGestureRecognizer::CancelGesture;
+            }
+            else result = QGestureRecognizer::TriggerGesture;
+          }
+        }
+      } break;
+    
+    case QEvent::MouseButtonPress:
+    case QEvent::MouseMove:
+    case QEvent::MouseButtonRelease:
+        result = QGestureRecognizer::Ignore;
+        break;
+    default:
+        result = QGestureRecognizer::Ignore;
+        break;
+    }
+
+    return result;
+  } // TabGestureRecognizer::recognize( QGesture * state, QObject * watched, QEvent * event)
+
+
+  void ApplyGestureRecognizer::reset( QGesture * state )
+  {
+    ApplyGesture * q  = static_cast<ApplyGesture*>(state);
+    q->_tripleTouch = false;
+  } // TabGestureRecognizer::reset( QGesture * gesture )
+
+ 
+
+  }} // namspaces