2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef PULSEVIEW_PV_VIEW_VIEW_H
22 #define PULSEVIEW_PV_VIEW_VIEW_H
29 #include <boost/shared_ptr.hpp>
30 #include <boost/weak_ptr.hpp>
32 #include <QAbstractScrollArea>
35 #include <pv/data/signaldata.h>
37 #include "cursorpair.h"
50 class View : public QAbstractScrollArea {
54 static const double MaxScale;
55 static const double MinScale;
57 static const int MaxScrollValue;
60 static const int SignalHeight;
61 static const int SignalMargin;
62 static const int SignalSnapGridSize;
64 static const QColor CursorAreaColour;
66 static const QSizeF LabelPadding;
69 explicit View(SigSession &session, QWidget *parent = 0);
71 SigSession& session();
72 const SigSession& session() const;
75 * Returns the view time scale in seconds per pixel.
80 * Returns the time offset of the left edge of the view in
83 double offset() const;
86 void zoom(double steps);
87 void zoom(double steps, int offset);
91 void zoom_one_to_one();
94 * Sets the scale and offset.
95 * @param scale The new view scale in seconds per pixel.
96 * @param offset The view time offset in seconds.
98 void set_scale_offset(double scale, double offset);
100 std::vector< boost::shared_ptr<Trace> > get_traces() const;
102 std::list<boost::weak_ptr<SelectableItem> > selected_items() const;
104 std::set< boost::shared_ptr<pv::data::SignalData> >
105 get_visible_data() const;
107 std::pair<double, double> get_time_extents() const;
110 * Returns true if cursors are displayed. false otherwise.
112 bool cursors_shown() const;
115 * Shows or hides the cursors.
117 void show_cursors(bool show = true);
120 * Moves the cursors to a convenient position in the view.
122 void centre_cursors();
125 * Returns a reference to the pair of cursors.
127 CursorPair& cursors();
130 * Returns a reference to the pair of cursors.
132 const CursorPair& cursors() const;
134 const QPoint& hover_point() const;
136 void normalize_layout();
138 void update_viewport();
141 void hover_point_changed();
143 void signals_moved();
145 void selection_changed();
147 void scale_offset_changed();
150 void get_scroll_layout(double &length, double &offset) const;
153 * Simultaneously sets the zoom and offset.
154 * @param scale The scale to set the view to in seconds per pixel. This
155 * value is clamped between MinScale and MaxScale.
156 * @param offset The offset of the left edge of the view in seconds.
158 void set_zoom(double scale, int offset);
160 void update_scroll();
162 void update_layout();
164 static bool compare_trace_v_offsets(
165 const boost::shared_ptr<pv::view::Trace> &a,
166 const boost::shared_ptr<pv::view::Trace> &b);
169 bool eventFilter(QObject *object, QEvent *event);
171 bool viewportEvent(QEvent *e);
173 void resizeEvent(QResizeEvent *e);
177 void h_scroll_value_changed(int value);
178 void v_scroll_value_changed(int value);
180 void signals_changed();
183 void marker_time_changed();
185 void on_signals_moved();
187 void on_geometry_updated();
190 SigSession &_session;
196 /// The view time scale in seconds per pixel.
199 /// The view time offset in seconds.
203 bool _updating_scroll;
214 #endif // PULSEVIEW_PV_VIEW_VIEW_H