]>
Commit | Line | Data |
---|---|---|
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 <list> | |
27 | #include <memory> | |
28 | #include <set> | |
29 | #include <unordered_map> | |
30 | #include <vector> | |
31 | ||
32 | #include <QAbstractScrollArea> | |
33 | #include <QSizeF> | |
34 | #include <QTimer> | |
35 | ||
36 | #include <pv/data/signaldata.hpp> | |
37 | ||
38 | #include "cursorpair.hpp" | |
39 | #include "flag.hpp" | |
40 | #include "rowitemowner.hpp" | |
41 | ||
42 | namespace pv { | |
43 | ||
44 | class Session; | |
45 | ||
46 | namespace view { | |
47 | ||
48 | class CursorHeader; | |
49 | class Header; | |
50 | class Ruler; | |
51 | class Viewport; | |
52 | ||
53 | class View : public QAbstractScrollArea, public RowItemOwner { | |
54 | Q_OBJECT | |
55 | ||
56 | private: | |
57 | enum StickyEvents { | |
58 | RowItemHExtentsChanged = 1, | |
59 | RowItemVExtentsChanged = 2 | |
60 | }; | |
61 | ||
62 | private: | |
63 | static const double MaxScale; | |
64 | static const double MinScale; | |
65 | ||
66 | static const int MaxScrollValue; | |
67 | ||
68 | static const int ScaleUnits[3]; | |
69 | ||
70 | public: | |
71 | explicit View(Session &session, QWidget *parent = 0); | |
72 | ||
73 | Session& session(); | |
74 | const Session& session() const; | |
75 | ||
76 | /** | |
77 | * Returns the view of the owner. | |
78 | */ | |
79 | virtual pv::view::View* view(); | |
80 | ||
81 | /** | |
82 | * Returns the view of the owner. | |
83 | */ | |
84 | virtual const pv::view::View* view() const; | |
85 | ||
86 | Viewport* viewport(); | |
87 | ||
88 | const Viewport* viewport() const; | |
89 | ||
90 | /** | |
91 | * Gets a list of time markers. | |
92 | */ | |
93 | std::vector< std::shared_ptr<TimeItem> > time_items() const; | |
94 | ||
95 | /** | |
96 | * Returns the view time scale in seconds per pixel. | |
97 | */ | |
98 | double scale() const; | |
99 | ||
100 | /** | |
101 | * Returns the time offset of the left edge of the view in | |
102 | * seconds. | |
103 | */ | |
104 | double offset() const; | |
105 | int owner_visual_v_offset() const; | |
106 | ||
107 | /** | |
108 | * Returns the SI prefix to apply to the graticule time markings. | |
109 | */ | |
110 | unsigned int tick_prefix() const; | |
111 | ||
112 | /** | |
113 | * Returns period of the graticule time markings. | |
114 | */ | |
115 | double tick_period() const; | |
116 | ||
117 | /** | |
118 | * Returns the number of nested parents that this row item owner has. | |
119 | */ | |
120 | unsigned int depth() const; | |
121 | ||
122 | void zoom(double steps); | |
123 | void zoom(double steps, int offset); | |
124 | ||
125 | void zoom_fit(); | |
126 | ||
127 | void zoom_one_to_one(); | |
128 | ||
129 | /** | |
130 | * Sets the scale and offset. | |
131 | * @param scale The new view scale in seconds per pixel. | |
132 | * @param offset The view time offset in seconds. | |
133 | */ | |
134 | void set_scale_offset(double scale, double offset); | |
135 | ||
136 | std::set< std::shared_ptr<pv::data::SignalData> > | |
137 | get_visible_data() const; | |
138 | ||
139 | std::pair<double, double> get_time_extents() const; | |
140 | ||
141 | /** | |
142 | * Returns true if cursors are displayed. false otherwise. | |
143 | */ | |
144 | bool cursors_shown() const; | |
145 | ||
146 | /** | |
147 | * Shows or hides the cursors. | |
148 | */ | |
149 | void show_cursors(bool show = true); | |
150 | ||
151 | /** | |
152 | * Moves the cursors to a convenient position in the view. | |
153 | */ | |
154 | void centre_cursors(); | |
155 | ||
156 | /** | |
157 | * Returns a reference to the pair of cursors. | |
158 | */ | |
159 | std::shared_ptr<CursorPair> cursors() const; | |
160 | ||
161 | /** | |
162 | * Adds a new flag at a specified time. | |
163 | */ | |
164 | void add_flag(double time); | |
165 | ||
166 | /** | |
167 | * Removes a flag from the list. | |
168 | */ | |
169 | void remove_flag(std::shared_ptr<Flag> flag); | |
170 | ||
171 | /** | |
172 | * Gets the list of flags. | |
173 | */ | |
174 | std::vector< std::shared_ptr<Flag> > flags() const; | |
175 | ||
176 | const QPoint& hover_point() const; | |
177 | ||
178 | void update_viewport(); | |
179 | ||
180 | void restack_all_row_items(); | |
181 | ||
182 | Q_SIGNALS: | |
183 | void hover_point_changed(); | |
184 | ||
185 | void selection_changed(); | |
186 | ||
187 | void scale_offset_changed(); | |
188 | ||
189 | private: | |
190 | void get_scroll_layout(double &length, double &offset) const; | |
191 | ||
192 | /** | |
193 | * Simultaneously sets the zoom and offset. | |
194 | * @param scale The scale to set the view to in seconds per pixel. This | |
195 | * value is clamped between MinScale and MaxScale. | |
196 | * @param offset The offset of the left edge of the view in seconds. | |
197 | */ | |
198 | void set_zoom(double scale, int offset); | |
199 | ||
200 | /** | |
201 | * Find a tick spacing and number formatting that does not cause | |
202 | * the values to collide. | |
203 | */ | |
204 | void calculate_tick_spacing(); | |
205 | ||
206 | void update_scroll(); | |
207 | ||
208 | void update_layout(); | |
209 | ||
210 | /** | |
211 | * Satisifies RowItem functionality. | |
212 | * @param p the QPainter to paint into. | |
213 | * @param rect the rectangle of the header area. | |
214 | * @param hover true if the label is being hovered over by the mouse. | |
215 | */ | |
216 | void paint_label(QPainter &p, const QRect &rect, bool hover); | |
217 | ||
218 | /** | |
219 | * Computes the outline rectangle of a label. | |
220 | * @param rect the rectangle of the header area. | |
221 | * @return Returns the rectangle of the signal label. | |
222 | */ | |
223 | QRectF label_rect(const QRectF &rect); | |
224 | ||
225 | static bool add_channels_to_owner( | |
226 | const std::vector< std::shared_ptr<sigrok::Channel> > &channels, | |
227 | RowItemOwner *owner, int &offset, | |
228 | std::unordered_map<std::shared_ptr<sigrok::Channel>, | |
229 | std::shared_ptr<Signal> > &signal_map, | |
230 | std::function<bool (std::shared_ptr<RowItem>)> filter_func = | |
231 | std::function<bool (std::shared_ptr<RowItem>)>()); | |
232 | ||
233 | static void apply_offset( | |
234 | std::shared_ptr<RowItem> row_item, int &offset); | |
235 | ||
236 | private: | |
237 | bool eventFilter(QObject *object, QEvent *event); | |
238 | ||
239 | bool viewportEvent(QEvent *e); | |
240 | ||
241 | void resizeEvent(QResizeEvent *e); | |
242 | ||
243 | public: | |
244 | void row_item_appearance_changed(bool label, bool content); | |
245 | void time_item_appearance_changed(bool label, bool content); | |
246 | ||
247 | void extents_changed(bool horz, bool vert); | |
248 | ||
249 | private Q_SLOTS: | |
250 | ||
251 | void h_scroll_value_changed(int value); | |
252 | void v_scroll_value_changed(int value); | |
253 | ||
254 | void signals_changed(); | |
255 | void data_updated(); | |
256 | ||
257 | void process_sticky_events(); | |
258 | ||
259 | void on_hover_point_changed(); | |
260 | ||
261 | private: | |
262 | Session &session_; | |
263 | ||
264 | Viewport *viewport_; | |
265 | Ruler *ruler_; | |
266 | Header *header_; | |
267 | ||
268 | /// The view time scale in seconds per pixel. | |
269 | double scale_; | |
270 | ||
271 | /// The view time offset in seconds. | |
272 | double offset_; | |
273 | ||
274 | int v_offset_; | |
275 | bool updating_scroll_; | |
276 | ||
277 | double tick_period_; | |
278 | unsigned int tick_prefix_; | |
279 | ||
280 | bool show_cursors_; | |
281 | std::shared_ptr<CursorPair> cursors_; | |
282 | ||
283 | std::list< std::shared_ptr<Flag> > flags_; | |
284 | char next_flag_text_; | |
285 | ||
286 | QPoint hover_point_; | |
287 | ||
288 | unsigned int sticky_events_; | |
289 | QTimer lazy_event_handler_; | |
290 | }; | |
291 | ||
292 | } // namespace view | |
293 | } // namespace pv | |
294 | ||
295 | #endif // PULSEVIEW_PV_VIEW_VIEW_H |