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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 <unordered_map> | |
29 | #include <vector> | |
30 | ||
31 | #include <QAbstractScrollArea> | |
32 | #include <QSizeF> | |
33 | #include <QTimer> | |
34 | ||
35 | #include <pv/data/signaldata.hpp> | |
36 | ||
37 | #include "cursorpair.hpp" | |
38 | #include "rowitemowner.hpp" | |
39 | ||
40 | namespace pv { | |
41 | ||
42 | class Session; | |
43 | ||
44 | namespace view { | |
45 | ||
46 | class CursorHeader; | |
47 | class Header; | |
48 | class Ruler; | |
49 | class Viewport; | |
50 | ||
51 | class View : public QAbstractScrollArea, public RowItemOwner { | |
52 | Q_OBJECT | |
53 | ||
54 | private: | |
55 | enum StickyEvents { | |
56 | SelectableItemHExtentsChanged = 1, | |
57 | SelectableItemVExtentsChanged = 2 | |
58 | }; | |
59 | ||
60 | private: | |
61 | static const double MaxScale; | |
62 | static const double MinScale; | |
63 | ||
64 | static const int MaxScrollValue; | |
65 | ||
66 | public: | |
67 | static const QColor CursorAreaColour; | |
68 | ||
69 | static const QSizeF LabelPadding; | |
70 | ||
71 | public: | |
72 | explicit View(Session &session, QWidget *parent = 0); | |
73 | ||
74 | Session& session(); | |
75 | const Session& session() const; | |
76 | ||
77 | /** | |
78 | * Returns the view of the owner. | |
79 | */ | |
80 | virtual pv::view::View* view(); | |
81 | ||
82 | /** | |
83 | * Returns the view of the owner. | |
84 | */ | |
85 | virtual const pv::view::View* view() const; | |
86 | ||
87 | Viewport* viewport(); | |
88 | ||
89 | const Viewport* viewport() const; | |
90 | ||
91 | /** | |
92 | * Returns the view time scale in seconds per pixel. | |
93 | */ | |
94 | double scale() const; | |
95 | ||
96 | /** | |
97 | * Returns the time offset of the left edge of the view in | |
98 | * seconds. | |
99 | */ | |
100 | double offset() const; | |
101 | int owner_visual_v_offset() const; | |
102 | ||
103 | /** | |
104 | * Returns the number of nested parents that this row item owner has. | |
105 | */ | |
106 | unsigned int depth() const; | |
107 | ||
108 | void zoom(double steps); | |
109 | void zoom(double steps, int offset); | |
110 | ||
111 | void zoom_fit(); | |
112 | ||
113 | void zoom_one_to_one(); | |
114 | ||
115 | /** | |
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. | |
119 | */ | |
120 | void set_scale_offset(double scale, double offset); | |
121 | ||
122 | std::set< std::shared_ptr<pv::data::SignalData> > | |
123 | get_visible_data() const; | |
124 | ||
125 | std::pair<double, double> get_time_extents() const; | |
126 | ||
127 | /** | |
128 | * Returns true if cursors are displayed. false otherwise. | |
129 | */ | |
130 | bool cursors_shown() const; | |
131 | ||
132 | /** | |
133 | * Shows or hides the cursors. | |
134 | */ | |
135 | void show_cursors(bool show = true); | |
136 | ||
137 | /** | |
138 | * Moves the cursors to a convenient position in the view. | |
139 | */ | |
140 | void centre_cursors(); | |
141 | ||
142 | /** | |
143 | * Returns a reference to the pair of cursors. | |
144 | */ | |
145 | CursorPair& cursors(); | |
146 | ||
147 | /** | |
148 | * Returns a reference to the pair of cursors. | |
149 | */ | |
150 | const CursorPair& cursors() const; | |
151 | ||
152 | const QPoint& hover_point() const; | |
153 | ||
154 | void update_viewport(); | |
155 | ||
156 | void restack_all_row_items(); | |
157 | ||
158 | Q_SIGNALS: | |
159 | void hover_point_changed(); | |
160 | ||
161 | void signals_moved(); | |
162 | ||
163 | void selection_changed(); | |
164 | ||
165 | void scale_offset_changed(); | |
166 | ||
167 | private: | |
168 | void get_scroll_layout(double &length, double &offset) const; | |
169 | ||
170 | /** | |
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. | |
175 | */ | |
176 | void set_zoom(double scale, int offset); | |
177 | ||
178 | void update_scroll(); | |
179 | ||
180 | void update_layout(); | |
181 | ||
182 | /** | |
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 | |
186 | * area. | |
187 | * @param hover true if the label is being hovered over by the mouse. | |
188 | */ | |
189 | void paint_label(QPainter &p, int right, bool hover); | |
190 | ||
191 | /** | |
192 | * Computes the outline rectangle of a label. | |
193 | * @param right the x-coordinate of the right edge of the header | |
194 | * area. | |
195 | * @return Returns the rectangle of the signal label. | |
196 | */ | |
197 | QRectF label_rect(int right); | |
198 | ||
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>)>()); | |
206 | ||
207 | static void apply_offset( | |
208 | std::shared_ptr<RowItem> row_item, int &offset); | |
209 | ||
210 | private: | |
211 | bool eventFilter(QObject *object, QEvent *event); | |
212 | ||
213 | bool viewportEvent(QEvent *e); | |
214 | ||
215 | void resizeEvent(QResizeEvent *e); | |
216 | ||
217 | public: | |
218 | void appearance_changed(bool label, bool content); | |
219 | ||
220 | void extents_changed(bool horz, bool vert); | |
221 | ||
222 | private Q_SLOTS: | |
223 | ||
224 | void h_scroll_value_changed(int value); | |
225 | void v_scroll_value_changed(int value); | |
226 | ||
227 | void signals_changed(); | |
228 | void data_updated(); | |
229 | ||
230 | void marker_time_changed(); | |
231 | ||
232 | void on_signals_moved(); | |
233 | ||
234 | void process_sticky_events(); | |
235 | ||
236 | void on_hover_point_changed(); | |
237 | ||
238 | private: | |
239 | Session &session_; | |
240 | ||
241 | Viewport *viewport_; | |
242 | Ruler *ruler_; | |
243 | CursorHeader *cursorheader_; | |
244 | Header *header_; | |
245 | ||
246 | /// The view time scale in seconds per pixel. | |
247 | double scale_; | |
248 | ||
249 | /// The view time offset in seconds. | |
250 | double offset_; | |
251 | ||
252 | int v_offset_; | |
253 | bool updating_scroll_; | |
254 | ||
255 | bool show_cursors_; | |
256 | CursorPair cursors_; | |
257 | ||
258 | QPoint hover_point_; | |
259 | ||
260 | unsigned int sticky_events_; | |
261 | QTimer lazy_event_handler_; | |
262 | }; | |
263 | ||
264 | } // namespace view | |
265 | } // namespace pv | |
266 | ||
267 | #endif // PULSEVIEW_PV_VIEW_VIEW_H |