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 <unordered_map>
31 #include <QAbstractScrollArea>
35 #include <pv/data/signaldata.h>
37 #include "cursorpair.h"
38 #include "rowitemowner.h"
51 class View : public QAbstractScrollArea, public RowItemOwner {
56 SelectableItemHExtentsChanged = 1,
57 SelectableItemVExtentsChanged = 2
61 static const double MaxScale;
62 static const double MinScale;
64 static const int MaxScrollValue;
67 static const QColor CursorAreaColour;
69 static const QSizeF LabelPadding;
72 explicit View(SigSession &session, QWidget *parent = 0);
74 SigSession& session();
75 const SigSession& session() const;
78 * Returns the view of the owner.
80 virtual pv::view::View* view();
83 * Returns the view of the owner.
85 virtual const pv::view::View* view() const;
89 const Viewport* viewport() const;
92 * Returns the view time scale in seconds per pixel.
97 * Returns the time offset of the left edge of the view in
100 double offset() const;
101 int owner_visual_v_offset() const;
104 * Returns the number of nested parents that this row item owner has.
106 unsigned int depth() const;
108 void zoom(double steps);
109 void zoom(double steps, int offset);
113 void zoom_one_to_one();
116 * Sets the scale and offset.
117 * @param scale The new view scale in seconds per pixel.
118 * @param offset The view time offset in seconds.
120 void set_scale_offset(double scale, double offset);
122 std::set< std::shared_ptr<pv::data::SignalData> >
123 get_visible_data() const;
125 std::pair<double, double> get_time_extents() const;
128 * Returns true if cursors are displayed. false otherwise.
130 bool cursors_shown() const;
133 * Shows or hides the cursors.
135 void show_cursors(bool show = true);
138 * Moves the cursors to a convenient position in the view.
140 void centre_cursors();
143 * Returns a reference to the pair of cursors.
145 CursorPair& cursors();
148 * Returns a reference to the pair of cursors.
150 const CursorPair& cursors() const;
152 const QPoint& hover_point() const;
154 void update_viewport();
156 void restack_all_row_items();
159 void hover_point_changed();
161 void signals_moved();
163 void selection_changed();
165 void scale_offset_changed();
168 void get_scroll_layout(double &length, double &offset) const;
171 * Simultaneously sets the zoom and offset.
172 * @param scale The scale to set the view to in seconds per pixel. This
173 * value is clamped between MinScale and MaxScale.
174 * @param offset The offset of the left edge of the view in seconds.
176 void set_zoom(double scale, int offset);
178 void update_scroll();
180 void update_layout();
183 * Satisifies RowItem functionality.
184 * @param p the QPainter to paint into.
185 * @param right the x-coordinate of the right edge of the header
187 * @param hover true if the label is being hovered over by the mouse.
189 void paint_label(QPainter &p, int right, bool hover);
192 * Computes the outline rectangle of a label.
193 * @param right the x-coordinate of the right edge of the header
195 * @return Returns the rectangle of the signal label.
197 QRectF label_rect(int right);
199 static bool add_channels_to_owner(
200 const std::vector< std::shared_ptr<sigrok::Channel> > &channels,
201 RowItemOwner *owner, int &offset,
202 std::unordered_map<std::shared_ptr<sigrok::Channel>,
203 std::shared_ptr<Signal> > &signal_map,
204 std::function<bool (std::shared_ptr<RowItem>)> filter_func =
205 std::function<bool (std::shared_ptr<RowItem>)>());
207 static void apply_offset(
208 std::shared_ptr<RowItem> row_item, int &offset);
211 bool eventFilter(QObject *object, QEvent *event);
213 bool viewportEvent(QEvent *e);
215 void resizeEvent(QResizeEvent *e);
218 void appearance_changed(bool label, bool content);
220 void extents_changed(bool horz, bool vert);
224 void h_scroll_value_changed(int value);
225 void v_scroll_value_changed(int value);
227 void signals_changed();
230 void marker_time_changed();
232 void on_signals_moved();
234 void process_sticky_events();
236 void on_hover_point_changed();
239 SigSession &_session;
243 CursorHeader *_cursorheader;
246 /// The view time scale in seconds per pixel.
249 /// The view time offset in seconds.
253 bool _updating_scroll;
260 unsigned int _sticky_events;
261 QTimer _lazy_event_handler;
267 #endif // PULSEVIEW_PV_VIEW_VIEW_H