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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_ANALOGSIGNAL_H | |
22 | #define PULSEVIEW_PV_VIEW_ANALOGSIGNAL_H | |
23 | ||
24 | #include "signal.hpp" | |
25 | ||
26 | #include <memory> | |
27 | ||
28 | namespace pv { | |
29 | ||
30 | namespace data { | |
31 | class Analog; | |
32 | class AnalogSnapshot; | |
33 | } | |
34 | ||
35 | namespace view { | |
36 | ||
37 | class AnalogSignal : public Signal | |
38 | { | |
39 | private: | |
40 | static const int NominalHeight; | |
41 | static const QColor SignalColours[4]; | |
42 | ||
43 | static const float EnvelopeThreshold; | |
44 | ||
45 | public: | |
46 | AnalogSignal(pv::Session &session, | |
47 | std::shared_ptr<sigrok::Channel> channel, | |
48 | std::shared_ptr<pv::data::Analog> data); | |
49 | ||
50 | virtual ~AnalogSignal(); | |
51 | ||
52 | std::shared_ptr<pv::data::SignalData> data() const; | |
53 | ||
54 | std::shared_ptr<pv::data::Analog> analog_data() const; | |
55 | ||
56 | void set_scale(float scale); | |
57 | ||
58 | /** | |
59 | * Computes the vertical extents of the contents of this row item. | |
60 | * @return A pair containing the minimum and maximum y-values. | |
61 | */ | |
62 | std::pair<int, int> v_extents() const; | |
63 | ||
64 | /** | |
65 | * Paints the background layer of the signal with a QPainter | |
66 | * @param p the QPainter to paint into. | |
67 | * @param left the x-coordinate of the left edge of the signal. | |
68 | * @param right the x-coordinate of the right edge of the signal. | |
69 | **/ | |
70 | void paint_back(QPainter &p, int left, int right); | |
71 | ||
72 | /** | |
73 | * Paints the mid-layer of the signal with a QPainter | |
74 | * @param p the QPainter to paint into. | |
75 | * @param left the x-coordinate of the left edge of the signal. | |
76 | * @param right the x-coordinate of the right edge of the signal. | |
77 | **/ | |
78 | void paint_mid(QPainter &p, int left, int right); | |
79 | ||
80 | private: | |
81 | void paint_trace(QPainter &p, | |
82 | const std::shared_ptr<pv::data::AnalogSnapshot> &snapshot, | |
83 | int y, int left, const int64_t start, const int64_t end, | |
84 | const double pixels_offset, const double samples_per_pixel); | |
85 | ||
86 | void paint_envelope(QPainter &p, | |
87 | const std::shared_ptr<pv::data::AnalogSnapshot> &snapshot, | |
88 | int y, int left, const int64_t start, const int64_t end, | |
89 | const double pixels_offset, const double samples_per_pixel); | |
90 | ||
91 | private: | |
92 | std::shared_ptr<pv::data::Analog> data_; | |
93 | float scale_; | |
94 | }; | |
95 | ||
96 | } // namespace view | |
97 | } // namespace pv | |
98 | ||
99 | #endif // PULSEVIEW_PV_VIEW_ANALOGSIGNAL_H |