#include <stdint.h>
+#include <set>
+#include <vector>
+
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+
#include <QAbstractScrollArea>
+#include <QSizeF>
+
+#include <pv/data/signaldata.h>
+
+#include "cursorpair.h"
namespace pv {
class Header;
class Ruler;
+class Trace;
class Viewport;
class View : public QAbstractScrollArea {
static const double MaxScale;
static const double MinScale;
- static const int LabelMarginWidth;
- static const int RulerHeight;
-
static const int MaxScrollValue;
public:
static const int SignalHeight;
+ static const int SignalMargin;
+ static const int SignalSnapGridSize;
+
+ static const QColor CursorAreaColour;
+
+ static const QSizeF LabelPadding;
public:
explicit View(SigSession &session, QWidget *parent = 0);
SigSession& session();
+ const SigSession& session() const;
+ /**
+ * 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);
+ void zoom_fit();
+
+ void zoom_one_to_one();
+
+ /**
+ * 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);
+ std::vector< boost::shared_ptr<Trace> > get_traces() const;
+
+ std::list<boost::weak_ptr<SelectableItem> > selected_items() const;
+
+ std::set< boost::shared_ptr<pv::data::SignalData> >
+ get_visible_data() const;
+
+ std::pair<double, double> get_time_extents() const;
+
+ /**
+ * Returns true if cursors are displayed. false otherwise.
+ */
+ bool cursors_shown() const;
+
+ /**
+ * Shows or hides the cursors.
+ */
+ void show_cursors(bool show = true);
+
+ /**
+ * Moves the cursors to a convenient position in the view.
+ */
+ void centre_cursors();
+
+ /**
+ * Returns a reference to the pair of cursors.
+ */
+ CursorPair& cursors();
+
+ /**
+ * Returns a reference to the pair of cursors.
+ */
+ const CursorPair& cursors() const;
+
const QPoint& hover_point() const;
+ void normalize_layout();
+
+ void update_viewport();
+
signals:
void hover_point_changed();
+ void signals_moved();
+
+ void selection_changed();
+
+ void scale_offset_changed();
+
private:
void get_scroll_layout(double &length, double &offset) const;
-
+
+ /**
+ * Simultaneously sets the zoom and offset.
+ * @param scale The scale to set the view to in seconds per pixel. This
+ * value is clamped between MinScale and MaxScale.
+ * @param offset The offset of the left edge of the view in seconds.
+ */
+ void set_zoom(double scale, int offset);
+
void update_scroll();
+ void update_layout();
+
+ static bool compare_trace_v_offsets(
+ const boost::shared_ptr<pv::view::Trace> &a,
+ const boost::shared_ptr<pv::view::Trace> &b);
+
private:
bool eventFilter(QObject *object, QEvent *event);
void h_scroll_value_changed(int value);
void v_scroll_value_changed(int value);
+ void signals_changed();
void data_updated();
+ void marker_time_changed();
+
+ void on_signals_moved();
+
+ void on_geometry_updated();
+
private:
SigSession &_session;
Ruler *_ruler;
Header *_header;
- 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 _updating_scroll;
+
+ bool _show_cursors;
+ CursorPair _cursors;
QPoint _hover_point;
};