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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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 | |
19 | */ | |
20 | ||
21 | #ifndef PULSEVIEW_PV_VIEW_VIEW_H | |
22 | #define PULSEVIEW_PV_VIEW_VIEW_H | |
23 | ||
24 | #include <stdint.h> | |
25 | ||
26 | #include <memory> | |
27 | #include <set> | |
28 | #include <vector> | |
29 | ||
30 | #include <QAbstractScrollArea> | |
31 | #include <QSizeF> | |
32 | ||
33 | #include <pv/data/signaldata.h> | |
34 | ||
35 | #include "cursorpair.h" | |
36 | ||
37 | namespace pv { | |
38 | ||
39 | class SigSession; | |
40 | ||
41 | namespace view { | |
42 | ||
43 | class CursorHeader; | |
44 | class Header; | |
45 | class Ruler; | |
46 | class Trace; | |
47 | class Viewport; | |
48 | ||
49 | class View : public QAbstractScrollArea { | |
50 | Q_OBJECT | |
51 | ||
52 | private: | |
53 | static const double MaxScale; | |
54 | static const double MinScale; | |
55 | ||
56 | static const int MaxScrollValue; | |
57 | ||
58 | public: | |
59 | static const int SignalHeight; | |
60 | static const int SignalMargin; | |
61 | static const int SignalSnapGridSize; | |
62 | ||
63 | static const QColor CursorAreaColour; | |
64 | ||
65 | static const QSizeF LabelPadding; | |
66 | ||
67 | public: | |
68 | explicit View(SigSession &session, QWidget *parent = 0); | |
69 | ||
70 | SigSession& session(); | |
71 | const SigSession& session() const; | |
72 | ||
73 | /** | |
74 | * Returns the view time scale in seconds per pixel. | |
75 | */ | |
76 | double scale() const; | |
77 | ||
78 | /** | |
79 | * Returns the time offset of the left edge of the view in | |
80 | * seconds. | |
81 | */ | |
82 | double offset() const; | |
83 | int v_offset() const; | |
84 | ||
85 | void zoom(double steps); | |
86 | void zoom(double steps, int offset); | |
87 | ||
88 | void zoom_fit(); | |
89 | ||
90 | void zoom_one_to_one(); | |
91 | ||
92 | /** | |
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. | |
96 | */ | |
97 | void set_scale_offset(double scale, double offset); | |
98 | ||
99 | std::vector< std::shared_ptr<Trace> > get_traces() const; | |
100 | ||
101 | std::list<std::weak_ptr<SelectableItem> > selected_items() const; | |
102 | ||
103 | std::set< std::shared_ptr<pv::data::SignalData> > | |
104 | get_visible_data() const; | |
105 | ||
106 | std::pair<double, double> get_time_extents() const; | |
107 | ||
108 | /** | |
109 | * Returns true if cursors are displayed. false otherwise. | |
110 | */ | |
111 | bool cursors_shown() const; | |
112 | ||
113 | /** | |
114 | * Shows or hides the cursors. | |
115 | */ | |
116 | void show_cursors(bool show = true); | |
117 | ||
118 | /** | |
119 | * Moves the cursors to a convenient position in the view. | |
120 | */ | |
121 | void centre_cursors(); | |
122 | ||
123 | /** | |
124 | * Returns a reference to the pair of cursors. | |
125 | */ | |
126 | CursorPair& cursors(); | |
127 | ||
128 | /** | |
129 | * Returns a reference to the pair of cursors. | |
130 | */ | |
131 | const CursorPair& cursors() const; | |
132 | ||
133 | const QPoint& hover_point() const; | |
134 | ||
135 | void normalize_layout(); | |
136 | ||
137 | void update_viewport(); | |
138 | ||
139 | Q_SIGNALS: | |
140 | void hover_point_changed(); | |
141 | ||
142 | void signals_moved(); | |
143 | ||
144 | void selection_changed(); | |
145 | ||
146 | void scale_offset_changed(); | |
147 | ||
148 | private: | |
149 | void get_scroll_layout(double &length, double &offset) const; | |
150 | ||
151 | /** | |
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. | |
156 | */ | |
157 | void set_zoom(double scale, int offset); | |
158 | ||
159 | void update_scroll(); | |
160 | ||
161 | void update_layout(); | |
162 | ||
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); | |
166 | ||
167 | private: | |
168 | bool eventFilter(QObject *object, QEvent *event); | |
169 | ||
170 | bool viewportEvent(QEvent *e); | |
171 | ||
172 | void resizeEvent(QResizeEvent *e); | |
173 | ||
174 | private Q_SLOTS: | |
175 | ||
176 | void h_scroll_value_changed(int value); | |
177 | void v_scroll_value_changed(int value); | |
178 | ||
179 | void signals_changed(); | |
180 | void data_updated(); | |
181 | ||
182 | void marker_time_changed(); | |
183 | ||
184 | void on_signals_moved(); | |
185 | ||
186 | void on_geometry_updated(); | |
187 | ||
188 | private: | |
189 | SigSession &_session; | |
190 | ||
191 | Viewport *_viewport; | |
192 | Ruler *_ruler; | |
193 | CursorHeader *_cursorheader; | |
194 | Header *_header; | |
195 | ||
196 | /// The view time scale in seconds per pixel. | |
197 | double _scale; | |
198 | ||
199 | /// The view time offset in seconds. | |
200 | double _offset; | |
201 | ||
202 | int _v_offset; | |
203 | bool _updating_scroll; | |
204 | ||
205 | bool _show_cursors; | |
206 | CursorPair _cursors; | |
207 | ||
208 | QPoint _hover_point; | |
209 | }; | |
210 | ||
211 | } // namespace view | |
212 | } // namespace pv | |
213 | ||
214 | #endif // PULSEVIEW_PV_VIEW_VIEW_H |