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 6e5710fede733d2aa926236048d94247984dbd99..fb52f530fcb1dccae46ac2bdc773875f7adb7d4e 100644 (file)
--- a/pv/view/view.h
+++ b/pv/view/view.h
@@ -23,7 +23,12 @@
 
 #include <stdint.h>
 
+#include <utility>
+
 #include <QAbstractScrollArea>
+#include <QSizeF>
+
+#include "cursor.h"
 
 namespace pv {
 
@@ -49,21 +54,54 @@ 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:
@@ -74,6 +112,8 @@ private:
        
        void update_scroll();
 
+       void reset_signal_layout();
+
 private:
        bool eventFilter(QObject *object, QEvent *event);
 
@@ -88,6 +128,10 @@ private slots:
 
        void data_updated();
 
+       void marker_time_changed();
+
+       void signals_moved();
+
 private:
        SigSession &_session;
 
@@ -97,11 +141,17 @@ 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;
 };