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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 | #include <QTimer> | |
33 | ||
34 | #include <pv/data/signaldata.h> | |
35 | ||
36 | #include "cursorpair.h" | |
37 | #include "rowitemowner.h" | |
38 | ||
39 | namespace pv { | |
40 | ||
41 | class SigSession; | |
42 | ||
43 | namespace view { | |
44 | ||
45 | class CursorHeader; | |
46 | class Header; | |
47 | class Ruler; | |
48 | class Viewport; | |
49 | ||
50 | class View : public QAbstractScrollArea, public RowItemOwner { | |
51 | Q_OBJECT | |
52 | ||
53 | private: | |
54 | enum StickyEvents { | |
55 | SelectableItemHExtentsChanged = 1, | |
56 | SelectableItemVExtentsChanged = 2 | |
57 | }; | |
58 | ||
59 | private: | |
60 | static const double MaxScale; | |
61 | static const double MinScale; | |
62 | ||
63 | static const int MaxScrollValue; | |
64 | ||
65 | public: | |
66 | static const QColor CursorAreaColour; | |
67 | ||
68 | static const QSizeF LabelPadding; | |
69 | ||
70 | public: | |
71 | explicit View(SigSession &session, QWidget *parent = 0); | |
72 | ||
73 | SigSession& session(); | |
74 | const SigSession& 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 | * Returns the view time scale in seconds per pixel. | |
92 | */ | |
93 | double scale() const; | |
94 | ||
95 | /** | |
96 | * Returns the time offset of the left edge of the view in | |
97 | * seconds. | |
98 | */ | |
99 | double offset() const; | |
100 | int owner_visual_v_offset() const; | |
101 | ||
102 | /** | |
103 | * Returns the number of nested parents that this row item owner has. | |
104 | */ | |
105 | unsigned int depth() const; | |
106 | ||
107 | void zoom(double steps); | |
108 | void zoom(double steps, int offset); | |
109 | ||
110 | void zoom_fit(); | |
111 | ||
112 | void zoom_one_to_one(); | |
113 | ||
114 | /** | |
115 | * Sets the scale and offset. | |
116 | * @param scale The new view scale in seconds per pixel. | |
117 | * @param offset The view time offset in seconds. | |
118 | */ | |
119 | void set_scale_offset(double scale, double offset); | |
120 | ||
121 | std::set< std::shared_ptr<pv::data::SignalData> > | |
122 | get_visible_data() const; | |
123 | ||
124 | std::pair<double, double> get_time_extents() const; | |
125 | ||
126 | /** | |
127 | * Returns true if cursors are displayed. false otherwise. | |
128 | */ | |
129 | bool cursors_shown() const; | |
130 | ||
131 | /** | |
132 | * Shows or hides the cursors. | |
133 | */ | |
134 | void show_cursors(bool show = true); | |
135 | ||
136 | /** | |
137 | * Moves the cursors to a convenient position in the view. | |
138 | */ | |
139 | void centre_cursors(); | |
140 | ||
141 | /** | |
142 | * Returns a reference to the pair of cursors. | |
143 | */ | |
144 | CursorPair& cursors(); | |
145 | ||
146 | /** | |
147 | * Returns a reference to the pair of cursors. | |
148 | */ | |
149 | const CursorPair& cursors() const; | |
150 | ||
151 | const QPoint& hover_point() const; | |
152 | ||
153 | void update_viewport(); | |
154 | ||
155 | void restack_all_row_items(); | |
156 | ||
157 | Q_SIGNALS: | |
158 | void hover_point_changed(); | |
159 | ||
160 | void signals_moved(); | |
161 | ||
162 | void selection_changed(); | |
163 | ||
164 | void scale_offset_changed(); | |
165 | ||
166 | private: | |
167 | void get_scroll_layout(double &length, double &offset) const; | |
168 | ||
169 | /** | |
170 | * Simultaneously sets the zoom and offset. | |
171 | * @param scale The scale to set the view to in seconds per pixel. This | |
172 | * value is clamped between MinScale and MaxScale. | |
173 | * @param offset The offset of the left edge of the view in seconds. | |
174 | */ | |
175 | void set_zoom(double scale, int offset); | |
176 | ||
177 | void update_scroll(); | |
178 | ||
179 | void update_layout(); | |
180 | ||
181 | /** | |
182 | * Satisifies RowItem functionality. | |
183 | * @param p the QPainter to paint into. | |
184 | * @param right the x-coordinate of the right edge of the header | |
185 | * area. | |
186 | * @param hover true if the label is being hovered over by the mouse. | |
187 | */ | |
188 | void paint_label(QPainter &p, int right, bool hover); | |
189 | ||
190 | /** | |
191 | * Computes the outline rectangle of a label. | |
192 | * @param right the x-coordinate of the right edge of the header | |
193 | * area. | |
194 | * @return Returns the rectangle of the signal label. | |
195 | */ | |
196 | QRectF label_rect(int right); | |
197 | ||
198 | private: | |
199 | bool eventFilter(QObject *object, QEvent *event); | |
200 | ||
201 | bool viewportEvent(QEvent *e); | |
202 | ||
203 | void resizeEvent(QResizeEvent *e); | |
204 | ||
205 | public: | |
206 | void appearance_changed(bool label, bool content); | |
207 | ||
208 | void extents_changed(bool horz, bool vert); | |
209 | ||
210 | private Q_SLOTS: | |
211 | ||
212 | void h_scroll_value_changed(int value); | |
213 | void v_scroll_value_changed(int value); | |
214 | ||
215 | void signals_changed(); | |
216 | void data_updated(); | |
217 | ||
218 | void marker_time_changed(); | |
219 | ||
220 | void on_signals_moved(); | |
221 | ||
222 | void process_sticky_events(); | |
223 | ||
224 | void on_hover_point_changed(); | |
225 | ||
226 | private: | |
227 | SigSession &_session; | |
228 | ||
229 | Viewport *_viewport; | |
230 | Ruler *_ruler; | |
231 | CursorHeader *_cursorheader; | |
232 | Header *_header; | |
233 | ||
234 | /// The view time scale in seconds per pixel. | |
235 | double _scale; | |
236 | ||
237 | /// The view time offset in seconds. | |
238 | double _offset; | |
239 | ||
240 | int _v_offset; | |
241 | bool _updating_scroll; | |
242 | ||
243 | bool _show_cursors; | |
244 | CursorPair _cursors; | |
245 | ||
246 | QPoint _hover_point; | |
247 | ||
248 | unsigned int _sticky_events; | |
249 | QTimer _lazy_event_handler; | |
250 | }; | |
251 | ||
252 | } // namespace view | |
253 | } // namespace pv | |
254 | ||
255 | #endif // PULSEVIEW_PV_VIEW_VIEW_H |