View: Implement pinch-zoom

[pulseview.git] / pv / view / viewport.h

diff --git a/pv/view/viewport.h b/pv/view/viewport.h
index 0474b7eefe4dd7fde0752d28fd8ea417214f01c6..f7c8028754a1f27f1f7d93a2005d458fd9e991e1 100644 (file)
--- a/pv/view/viewport.h
+++ b/pv/view/viewport.h
@@ -23,6 +23,7 @@
 
 #include <QTimer>
 #include <QWidget>
+#include <QTouchEvent>
 
 class QPainter;
 class QPaintEvent;
@@ -46,10 +47,13 @@ protected:
        void paintEvent(QPaintEvent *event);
 
 private:
+       bool event(QEvent *event);
        void mousePressEvent(QMouseEvent *event);
+       void mouseReleaseEvent(QMouseEvent *event);
        void mouseMoveEvent(QMouseEvent *event);
        void mouseDoubleClickEvent(QMouseEvent * event);
        void wheelEvent(QWheelEvent *event);
+       bool touchEvent(QTouchEvent *e);
 
 private slots:
        void on_signals_changed();
@@ -60,6 +64,11 @@ private:
 
        QPoint _mouse_down_point;
        double _mouse_down_offset;
+       bool _mouse_down_valid;
+
+       double _pinch_offset0;
+       double _pinch_offset1;
+       bool _pinch_zoom_active;
 };
 
 } // namespace view