Added snap to grid drag behaviour

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

diff --git a/pv/view/view.h b/pv/view/view.h
index d2abbf002c2f69a958df0cefef3465d098cb05e5..fb52f530fcb1dccae46ac2bdc773875f7adb7d4e 100644 (file)
--- a/pv/view/view.h
+++ b/pv/view/view.h
@@ -18,12 +18,17 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#ifndef PV_VIEW_VIEW_H
-#define PV_VIEW_VIEW_H
+#ifndef PULSEVIEW_PV_VIEW_VIEW_H
+#define PULSEVIEW_PV_VIEW_VIEW_H
 
 #include <stdint.h>
 
+#include <utility>
+
 #include <QAbstractScrollArea>
+#include <QSizeF>
+
+#include "cursor.h"
 
 namespace pv {
 
@@ -49,37 +54,84 @@ private:
 
 public:
        static const int SignalHeight;
+       static const int SignalSnapGridSize;
+
+       static const QColor CursorAreaColour;
+
+       static const QSizeF LabelPadding;
 
 public:
        explicit View(SigSession &session, QWidget *parent = 0);
 
        SigSession& session();
 
+       /**
+        * Returns the view time scale in seconds per pixel.
+        */
        double scale() const;
+
+       /**
+        * Returns the time offset of the left edge of the view in
+        * seconds.
+        */
        double offset() const;
        int v_offset() const;
 
        void zoom(double steps);
        void zoom(double steps, int offset);
 
+       /**
+        * Sets the scale and offset.
+        * @param scale The new view scale in seconds per pixel.
+        * @param offset The view time offset in seconds.
+        */
        void set_scale_offset(double scale, double offset);
 
+       /**
+        * Returns true if cursors are displayed. false otherwise.
+        */
+       bool cursors_shown() const;
+
+       /**
+        * Shows or hides the cursors.
+        */
+       void show_cursors(bool show = true);
+
+       /**
+        * Returns a reference to the pair of cursors.
+        */
+       std::pair<Cursor, Cursor>& cursors();
+
+       const QPoint& hover_point() const;
+
+signals:
+       void hover_point_changed();
+
 private:
        void get_scroll_layout(double &length, double &offset) const;
        
        void update_scroll();
 
+       void reset_signal_layout();
+
 private:
+       bool eventFilter(QObject *object, QEvent *event);
+
        bool viewportEvent(QEvent *e);
 
        void resizeEvent(QResizeEvent *e);
 
 private slots:
+
        void h_scroll_value_changed(int value);
        void v_scroll_value_changed(int value);
 
        void data_updated();
 
+       void marker_time_changed();
+
+       void signals_moved();
+
 private:
        SigSession &_session;
 
@@ -89,13 +141,21 @@ private:
 
        uint64_t _data_length;
 
+       /// The view time scale in seconds per pixel.
        double _scale;
+
+       /// The view time offset in seconds.
        double _offset;
 
        int _v_offset;
+
+       bool _show_cursors;
+       std::pair<Cursor, Cursor> _cursors;
+
+       QPoint _hover_point;
 };
 
 } // namespace view
 } // namespace pv
 
-#endif // PV_VIEW_VIEW_H
+#endif // PULSEVIEW_PV_VIEW_VIEW_H