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"
36 #include "rowitemowner.h"
49 class View : public QAbstractScrollArea, public RowItemOwner {
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;
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 of the owner.
75 virtual pv::view::View* view();
78 * Returns the view of the owner.
80 virtual const pv::view::View* view() const;
84 const Viewport* viewport() const;
87 * Returns the view time scale in seconds per pixel.
92 * Returns the time offset of the left edge of the view in
95 double offset() const;
96 int owner_v_offset() const;
98 void zoom(double steps);
99 void zoom(double steps, int offset);
103 void zoom_one_to_one();
106 * Sets the scale and offset.
107 * @param scale The new view scale in seconds per pixel.
108 * @param offset The view time offset in seconds.
110 void set_scale_offset(double scale, double offset);
112 std::set< std::shared_ptr<pv::data::SignalData> >
113 get_visible_data() const;
115 std::pair<double, double> get_time_extents() const;
118 * Returns true if cursors are displayed. false otherwise.
120 bool cursors_shown() const;
123 * Shows or hides the cursors.
125 void show_cursors(bool show = true);
128 * Moves the cursors to a convenient position in the view.
130 void centre_cursors();
133 * Returns a reference to the pair of cursors.
135 CursorPair& cursors();
138 * Returns a reference to the pair of cursors.
140 const CursorPair& cursors() const;
142 const QPoint& hover_point() const;
144 void normalize_layout();
146 void update_viewport();
149 void hover_point_changed();
151 void signals_moved();
153 void selection_changed();
155 void scale_offset_changed();
158 void get_scroll_layout(double &length, double &offset) const;
161 * Simultaneously sets the zoom and offset.
162 * @param scale The scale to set the view to in seconds per pixel. This
163 * value is clamped between MinScale and MaxScale.
164 * @param offset The offset of the left edge of the view in seconds.
166 void set_zoom(double scale, int offset);
168 void update_scroll();
170 void update_layout();
173 * Satisifies RowItem functionality.
174 * @param p the QPainter to paint into.
175 * @param right the x-coordinate of the right edge of the header
177 * @param hover true if the label is being hovered over by the mouse.
179 void paint_label(QPainter &p, int right, bool hover);
182 * Computes the outline rectangle of a label.
183 * @param right the x-coordinate of the right edge of the header
185 * @return Returns the rectangle of the signal label.
187 QRectF label_rect(int right);
190 bool eventFilter(QObject *object, QEvent *event);
192 bool viewportEvent(QEvent *e);
194 void resizeEvent(QResizeEvent *e);
198 void h_scroll_value_changed(int value);
199 void v_scroll_value_changed(int value);
201 void signals_changed();
204 void marker_time_changed();
206 void on_signals_moved();
208 void on_geometry_updated();
210 void on_hover_point_changed();
213 SigSession &_session;
217 CursorHeader *_cursorheader;
220 /// The view time scale in seconds per pixel.
223 /// The view time offset in seconds.
227 bool _updating_scroll;
238 #endif // PULSEVIEW_PV_VIEW_VIEW_H