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 RulerHeight;
56 static const int MaxScrollValue;
59 static const int SignalHeight;
60 static const int SignalMargin;
61 static const int SignalSnapGridSize;
63 static const QColor CursorAreaColour;
65 static const QSizeF LabelPadding;
68 explicit View(SigSession &session, QWidget *parent = 0);
70 SigSession& session();
71 const SigSession& session() const;
74 * Returns the view time scale in seconds per pixel.
79 * Returns the time offset of the left edge of the view in
82 double offset() const;
85 void zoom(double steps);
86 void zoom(double steps, int offset);
90 void zoom_one_to_one();
93 * Sets the scale and offset.
94 * @param scale The new view scale in seconds per pixel.
95 * @param offset The view time offset in seconds.
97 void set_scale_offset(double scale, double offset);
99 std::vector< boost::shared_ptr<Trace> > get_traces() const;
101 std::list<boost::weak_ptr<SelectableItem> > selected_items() const;
104 * Returns true if cursors are displayed. false otherwise.
106 bool cursors_shown() const;
109 * Shows or hides the cursors.
111 void show_cursors(bool show = true);
114 * Moves the cursors to a convenient position in the view.
116 void centre_cursors();
119 * Returns a reference to the pair of cursors.
121 CursorPair& cursors();
124 * Returns a reference to the pair of cursors.
126 const CursorPair& cursors() const;
128 const QPoint& hover_point() const;
130 void normalize_layout();
132 void update_viewport();
135 void hover_point_changed();
137 void signals_moved();
139 void selection_changed();
141 void scale_offset_changed();
144 void get_scroll_layout(double &length, double &offset) const;
146 void set_zoom(double scale, int offset);
148 void update_scroll();
150 void update_layout();
152 static bool compare_trace_v_offsets(
153 const boost::shared_ptr<pv::view::Trace> &a,
154 const boost::shared_ptr<pv::view::Trace> &b);
157 bool eventFilter(QObject *object, QEvent *event);
159 bool viewportEvent(QEvent *e);
161 void resizeEvent(QResizeEvent *e);
165 void h_scroll_value_changed(int value);
166 void v_scroll_value_changed(int value);
168 void signals_changed();
171 void marker_time_changed();
173 void on_signals_moved();
175 void on_geometry_updated();
178 SigSession &_session;
184 uint64_t _data_length;
186 /// The view time scale in seconds per pixel.
189 /// The view time offset in seconds.
193 bool _updating_scroll;
204 #endif // PULSEVIEW_PV_VIEW_VIEW_H