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"
48 class View : public QAbstractScrollArea {
52 static const double MaxScale;
53 static const double MinScale;
55 static const int MaxScrollValue;
58 static const int SignalHeight;
59 static const int SignalMargin;
60 static const int SignalSnapGridSize;
62 static const QColor CursorAreaColour;
64 static const QSizeF LabelPadding;
67 explicit View(SigSession &session, QWidget *parent = 0);
69 SigSession& session();
70 const SigSession& session() const;
73 * Returns the view time scale in seconds per pixel.
78 * Returns the time offset of the left edge of the view in
81 double offset() const;
84 void zoom(double steps);
85 void zoom(double steps, int offset);
89 void zoom_one_to_one();
92 * Sets the scale and offset.
93 * @param scale The new view scale in seconds per pixel.
94 * @param offset The view time offset in seconds.
96 void set_scale_offset(double scale, double offset);
98 std::vector< std::shared_ptr<Trace> > get_traces() const;
100 std::list<std::weak_ptr<SelectableItem> > selected_items() const;
102 std::set< std::shared_ptr<pv::data::SignalData> >
103 get_visible_data() const;
105 std::pair<double, double> get_time_extents() const;
108 * Returns true if cursors are displayed. false otherwise.
110 bool cursors_shown() const;
113 * Shows or hides the cursors.
115 void show_cursors(bool show = true);
118 * Moves the cursors to a convenient position in the view.
120 void centre_cursors();
123 * Returns a reference to the pair of cursors.
125 CursorPair& cursors();
128 * Returns a reference to the pair of cursors.
130 const CursorPair& cursors() const;
132 const QPoint& hover_point() const;
134 void normalize_layout();
136 void update_viewport();
139 void hover_point_changed();
141 void signals_moved();
143 void selection_changed();
145 void scale_offset_changed();
148 void get_scroll_layout(double &length, double &offset) const;
151 * Simultaneously sets the zoom and offset.
152 * @param scale The scale to set the view to in seconds per pixel. This
153 * value is clamped between MinScale and MaxScale.
154 * @param offset The offset of the left edge of the view in seconds.
156 void set_zoom(double scale, int offset);
158 void update_scroll();
160 void update_layout();
162 static bool compare_trace_v_offsets(
163 const std::shared_ptr<pv::view::Trace> &a,
164 const std::shared_ptr<pv::view::Trace> &b);
167 bool eventFilter(QObject *object, QEvent *event);
169 bool viewportEvent(QEvent *e);
171 void resizeEvent(QResizeEvent *e);
175 void h_scroll_value_changed(int value);
176 void v_scroll_value_changed(int value);
178 void signals_changed();
181 void marker_time_changed();
183 void on_signals_moved();
185 void on_geometry_updated();
188 SigSession &_session;
194 /// The view time scale in seconds per pixel.
197 /// The view time offset in seconds.
201 bool _updating_scroll;
212 #endif // PULSEVIEW_PV_VIEW_VIEW_H