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
30 #include <QAbstractScrollArea>
33 #include <pv/data/signaldata.h>
35 #include "cursorpair.h"
49 class View : public QAbstractScrollArea {
53 static const double MaxScale;
54 static const double MinScale;
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< std::shared_ptr<Trace> > get_traces() const;
101 std::list<std::weak_ptr<SelectableItem> > selected_items() const;
103 std::set< std::shared_ptr<pv::data::SignalData> >
104 get_visible_data() const;
106 std::pair<double, double> get_time_extents() const;
109 * Returns true if cursors are displayed. false otherwise.
111 bool cursors_shown() const;
114 * Shows or hides the cursors.
116 void show_cursors(bool show = true);
119 * Moves the cursors to a convenient position in the view.
121 void centre_cursors();
124 * Returns a reference to the pair of cursors.
126 CursorPair& cursors();
129 * Returns a reference to the pair of cursors.
131 const CursorPair& cursors() const;
133 const QPoint& hover_point() const;
135 void normalize_layout();
137 void update_viewport();
140 void hover_point_changed();
142 void signals_moved();
144 void selection_changed();
146 void scale_offset_changed();
149 void get_scroll_layout(double &length, double &offset) const;
152 * Simultaneously sets the zoom and offset.
153 * @param scale The scale to set the view to in seconds per pixel. This
154 * value is clamped between MinScale and MaxScale.
155 * @param offset The offset of the left edge of the view in seconds.
157 void set_zoom(double scale, int offset);
159 void update_scroll();
161 void update_layout();
163 static bool compare_trace_v_offsets(
164 const std::shared_ptr<pv::view::Trace> &a,
165 const std::shared_ptr<pv::view::Trace> &b);
168 bool eventFilter(QObject *object, QEvent *event);
170 bool viewportEvent(QEvent *e);
172 void resizeEvent(QResizeEvent *e);
176 void h_scroll_value_changed(int value);
177 void v_scroll_value_changed(int value);
179 void signals_changed();
182 void marker_time_changed();
184 void on_signals_moved();
186 void on_geometry_updated();
189 SigSession &_session;
193 CursorHeader *_cursorheader;
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