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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 | #include "rowitemowner.h" | |
37 | ||
38 | namespace pv { | |
39 | ||
40 | class SigSession; | |
41 | ||
42 | namespace view { | |
43 | ||
44 | class CursorHeader; | |
45 | class Header; | |
46 | class Ruler; | |
47 | class Viewport; | |
48 | ||
49 | class View : public QAbstractScrollArea, public RowItemOwner { | |
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 QColor CursorAreaColour; | |
60 | ||
61 | static const QSizeF LabelPadding; | |
62 | ||
63 | public: | |
64 | explicit View(SigSession &session, QWidget *parent = 0); | |
65 | ||
66 | SigSession& session(); | |
67 | const SigSession& session() const; | |
68 | ||
69 | /** | |
70 | * Returns the view of the owner. | |
71 | */ | |
72 | virtual pv::view::View* view(); | |
73 | ||
74 | /** | |
75 | * Returns the view of the owner. | |
76 | */ | |
77 | virtual const pv::view::View* view() const; | |
78 | ||
79 | Viewport* viewport(); | |
80 | ||
81 | const Viewport* viewport() const; | |
82 | ||
83 | /** | |
84 | * Returns the view time scale in seconds per pixel. | |
85 | */ | |
86 | double scale() const; | |
87 | ||
88 | /** | |
89 | * Returns the time offset of the left edge of the view in | |
90 | * seconds. | |
91 | */ | |
92 | double offset() const; | |
93 | int owner_v_offset() const; | |
94 | ||
95 | void zoom(double steps); | |
96 | void zoom(double steps, int offset); | |
97 | ||
98 | void zoom_fit(); | |
99 | ||
100 | void zoom_one_to_one(); | |
101 | ||
102 | /** | |
103 | * Sets the scale and offset. | |
104 | * @param scale The new view scale in seconds per pixel. | |
105 | * @param offset The view time offset in seconds. | |
106 | */ | |
107 | void set_scale_offset(double scale, double offset); | |
108 | ||
109 | std::set< std::shared_ptr<pv::data::SignalData> > | |
110 | get_visible_data() const; | |
111 | ||
112 | std::pair<double, double> get_time_extents() const; | |
113 | ||
114 | /** | |
115 | * Returns true if cursors are displayed. false otherwise. | |
116 | */ | |
117 | bool cursors_shown() const; | |
118 | ||
119 | /** | |
120 | * Shows or hides the cursors. | |
121 | */ | |
122 | void show_cursors(bool show = true); | |
123 | ||
124 | /** | |
125 | * Moves the cursors to a convenient position in the view. | |
126 | */ | |
127 | void centre_cursors(); | |
128 | ||
129 | /** | |
130 | * Returns a reference to the pair of cursors. | |
131 | */ | |
132 | CursorPair& cursors(); | |
133 | ||
134 | /** | |
135 | * Returns a reference to the pair of cursors. | |
136 | */ | |
137 | const CursorPair& cursors() const; | |
138 | ||
139 | const QPoint& hover_point() const; | |
140 | ||
141 | void normalize_layout(); | |
142 | ||
143 | void update_viewport(); | |
144 | ||
145 | Q_SIGNALS: | |
146 | void hover_point_changed(); | |
147 | ||
148 | void signals_moved(); | |
149 | ||
150 | void selection_changed(); | |
151 | ||
152 | void scale_offset_changed(); | |
153 | ||
154 | private: | |
155 | void get_scroll_layout(double &length, double &offset) const; | |
156 | ||
157 | /** | |
158 | * Simultaneously sets the zoom and offset. | |
159 | * @param scale The scale to set the view to in seconds per pixel. This | |
160 | * value is clamped between MinScale and MaxScale. | |
161 | * @param offset The offset of the left edge of the view in seconds. | |
162 | */ | |
163 | void set_zoom(double scale, int offset); | |
164 | ||
165 | void update_scroll(); | |
166 | ||
167 | void update_layout(); | |
168 | ||
169 | /** | |
170 | * Satisifies RowItem functionality. | |
171 | * @param p the QPainter to paint into. | |
172 | * @param right the x-coordinate of the right edge of the header | |
173 | * area. | |
174 | * @param hover true if the label is being hovered over by the mouse. | |
175 | */ | |
176 | void paint_label(QPainter &p, int right, bool hover); | |
177 | ||
178 | /** | |
179 | * Computes the outline rectangle of a label. | |
180 | * @param right the x-coordinate of the right edge of the header | |
181 | * area. | |
182 | * @return Returns the rectangle of the signal label. | |
183 | */ | |
184 | QRectF label_rect(int right); | |
185 | ||
186 | private: | |
187 | bool eventFilter(QObject *object, QEvent *event); | |
188 | ||
189 | bool viewportEvent(QEvent *e); | |
190 | ||
191 | void resizeEvent(QResizeEvent *e); | |
192 | ||
193 | private Q_SLOTS: | |
194 | ||
195 | void h_scroll_value_changed(int value); | |
196 | void v_scroll_value_changed(int value); | |
197 | ||
198 | void signals_changed(); | |
199 | void data_updated(); | |
200 | ||
201 | void marker_time_changed(); | |
202 | ||
203 | void on_signals_moved(); | |
204 | ||
205 | void on_geometry_updated(); | |
206 | ||
207 | void on_hover_point_changed(); | |
208 | ||
209 | private: | |
210 | SigSession &_session; | |
211 | ||
212 | Viewport *_viewport; | |
213 | Ruler *_ruler; | |
214 | CursorHeader *_cursorheader; | |
215 | Header *_header; | |
216 | ||
217 | /// The view time scale in seconds per pixel. | |
218 | double _scale; | |
219 | ||
220 | /// The view time offset in seconds. | |
221 | double _offset; | |
222 | ||
223 | int _v_offset; | |
224 | bool _updating_scroll; | |
225 | ||
226 | bool _show_cursors; | |
227 | CursorPair _cursors; | |
228 | ||
229 | QPoint _hover_point; | |
230 | }; | |
231 | ||
232 | } // namespace view | |
233 | } // namespace pv | |
234 | ||
235 | #endif // PULSEVIEW_PV_VIEW_VIEW_H |