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 <QAbstractScrollArea>
43 class View : public QAbstractScrollArea {
47 static const double MaxScale;
48 static const double MinScale;
50 static const int LabelMarginWidth;
51 static const int RulerHeight;
53 static const int MaxScrollValue;
56 static const int SignalHeight;
57 static const int SignalMargin;
58 static const int SignalSnapGridSize;
60 static const QColor CursorAreaColour;
62 static const QSizeF LabelPadding;
65 explicit View(SigSession &session, QWidget *parent = 0);
67 SigSession& session();
70 * Returns the view time scale in seconds per pixel.
75 * Returns the time offset of the left edge of the view in
78 double offset() const;
81 void zoom(double steps);
82 void zoom(double steps, int offset);
85 * Sets the scale and offset.
86 * @param scale The new view scale in seconds per pixel.
87 * @param offset The view time offset in seconds.
89 void set_scale_offset(double scale, double offset);
92 * Returns true if cursors are displayed. false otherwise.
94 bool cursors_shown() const;
97 * Shows or hides the cursors.
99 void show_cursors(bool show = true);
102 * Returns a reference to the pair of cursors.
104 std::pair<Cursor, Cursor>& cursors();
106 const QPoint& hover_point() const;
108 void normalize_layout();
111 void hover_point_changed();
113 void signals_moved();
116 void get_scroll_layout(double &length, double &offset) const;
118 void update_scroll();
120 void reset_signal_layout();
123 bool eventFilter(QObject *object, QEvent *event);
125 bool viewportEvent(QEvent *e);
127 void resizeEvent(QResizeEvent *e);
131 void h_scroll_moved(int value);
132 void v_scroll_value_changed(int value);
134 void signals_changed();
137 void marker_time_changed();
139 void on_signals_moved();
142 SigSession &_session;
148 uint64_t _data_length;
150 /// The view time scale in seconds per pixel.
153 /// The view time offset in seconds.
159 std::pair<Cursor, Cursor> _cursors;
167 #endif // PULSEVIEW_PV_VIEW_VIEW_H