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
28 #include <boost/shared_ptr.hpp>
29 #include <boost/weak_ptr.hpp>
31 #include <QAbstractScrollArea>
34 #include "cursorpair.h"
47 class View : public QAbstractScrollArea {
51 static const double MaxScale;
52 static const double MinScale;
54 static const int LabelMarginWidth;
55 static const int RulerHeight;
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;
105 * Returns true if cursors are displayed. false otherwise.
107 bool cursors_shown() const;
110 * Shows or hides the cursors.
112 void show_cursors(bool show = true);
115 * Moves the cursors to a convenient position in the view.
117 void centre_cursors();
120 * Returns a reference to the pair of cursors.
122 CursorPair& cursors();
125 * Returns a reference to the pair of cursors.
127 const CursorPair& cursors() const;
129 const QPoint& hover_point() const;
131 void normalize_layout();
133 void update_viewport();
136 void hover_point_changed();
138 void signals_moved();
140 void selection_changed();
142 void scale_offset_changed();
145 void get_scroll_layout(double &length, double &offset) const;
147 void set_zoom(double scale, int offset);
149 void update_scroll();
151 static bool compare_trace_v_offsets(
152 const boost::shared_ptr<pv::view::Trace> &a,
153 const boost::shared_ptr<pv::view::Trace> &b);
156 bool eventFilter(QObject *object, QEvent *event);
158 bool viewportEvent(QEvent *e);
160 void resizeEvent(QResizeEvent *e);
164 void h_scroll_value_changed(int value);
165 void v_scroll_value_changed(int value);
167 void signals_changed();
170 void marker_time_changed();
172 void on_signals_moved();
175 SigSession &_session;
181 uint64_t _data_length;
183 /// The view time scale in seconds per pixel.
186 /// The view time offset in seconds.
190 bool _updating_scroll;
201 #endif // PULSEVIEW_PV_VIEW_VIEW_H