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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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #ifndef PULSEVIEW_PV_VIEWS_TRACEVIEW_ANALOGSIGNAL_HPP | |
21 | #define PULSEVIEW_PV_VIEWS_TRACEVIEW_ANALOGSIGNAL_HPP | |
22 | ||
23 | #include "signal.hpp" | |
24 | ||
25 | #include <memory> | |
26 | ||
27 | #include <QComboBox> | |
28 | ||
29 | namespace pv { | |
30 | ||
31 | namespace data { | |
32 | class Analog; | |
33 | class AnalogSegment; | |
34 | class SignalBase; | |
35 | } | |
36 | ||
37 | namespace views { | |
38 | namespace TraceView { | |
39 | ||
40 | class AnalogSignal : public Signal | |
41 | { | |
42 | Q_OBJECT | |
43 | ||
44 | private: | |
45 | static const QColor SignalColours[4]; | |
46 | static const QColor GridMajorColor, GridMinorColor; | |
47 | ||
48 | static const float EnvelopeThreshold; | |
49 | ||
50 | static const int MaximumVDivs; | |
51 | static const int MaxScaleIndex, MinScaleIndex; | |
52 | static const int InfoTextMarginRight, InfoTextMarginBottom; | |
53 | ||
54 | public: | |
55 | AnalogSignal(pv::Session &session, | |
56 | std::shared_ptr<data::SignalBase> base); | |
57 | ||
58 | virtual ~AnalogSignal() = default; | |
59 | ||
60 | std::shared_ptr<pv::data::SignalData> data() const; | |
61 | ||
62 | virtual void save_settings(QSettings &settings) const; | |
63 | ||
64 | virtual void restore_settings(QSettings &settings); | |
65 | ||
66 | /** | |
67 | * Computes the vertical extents of the contents of this row item. | |
68 | * @return A pair containing the minimum and maximum y-values. | |
69 | */ | |
70 | std::pair<int, int> v_extents() const; | |
71 | ||
72 | /** | |
73 | * Returns the offset to show the drag handle. | |
74 | */ | |
75 | int scale_handle_offset() const; | |
76 | ||
77 | /** | |
78 | * Handles the scale handle being dragged to an offset. | |
79 | * @param offset the offset the scale handle was dragged to. | |
80 | */ | |
81 | void scale_handle_dragged(int offset); | |
82 | ||
83 | /** | |
84 | * @copydoc pv::view::Signal::signal_scale_handle_drag_release() | |
85 | */ | |
86 | void scale_handle_drag_release(); | |
87 | ||
88 | /** | |
89 | * Paints the background layer of the signal with a QPainter | |
90 | * @param p the QPainter to paint into. | |
91 | * @param pp the painting parameters object to paint with.. | |
92 | */ | |
93 | void paint_back(QPainter &p, const ViewItemPaintParams &pp); | |
94 | ||
95 | /** | |
96 | * Paints the mid-layer of the signal with a QPainter | |
97 | * @param p the QPainter to paint into. | |
98 | * @param pp the painting parameters object to paint with.. | |
99 | */ | |
100 | void paint_mid(QPainter &p, const ViewItemPaintParams &pp); | |
101 | ||
102 | /** | |
103 | * Paints the foreground layer of the item with a QPainter | |
104 | * @param p the QPainter to paint into. | |
105 | * @param pp the painting parameters object to paint with. | |
106 | */ | |
107 | void paint_fore(QPainter &p, const ViewItemPaintParams &pp); | |
108 | ||
109 | private: | |
110 | void paint_grid(QPainter &p, int y, int left, int right); | |
111 | ||
112 | void paint_trace(QPainter &p, | |
113 | const std::shared_ptr<pv::data::AnalogSegment> &segment, | |
114 | int y, int left, const int64_t start, const int64_t end, | |
115 | const double pixels_offset, const double samples_per_pixel); | |
116 | ||
117 | void paint_envelope(QPainter &p, | |
118 | const std::shared_ptr<pv::data::AnalogSegment> &segment, | |
119 | int y, int left, const int64_t start, const int64_t end, | |
120 | const double pixels_offset, const double samples_per_pixel); | |
121 | ||
122 | /** | |
123 | * Computes the scale factor from the scale index and vdiv settings. | |
124 | */ | |
125 | float get_resolution(int scale_index); | |
126 | ||
127 | void update_scale(); | |
128 | ||
129 | protected: | |
130 | void populate_popup_form(QWidget *parent, QFormLayout *form); | |
131 | ||
132 | private Q_SLOTS: | |
133 | void on_vdivs_changed(int vdivs); | |
134 | ||
135 | void on_resolution_changed(int index); | |
136 | ||
137 | private: | |
138 | QComboBox *resolution_cb_; | |
139 | ||
140 | float scale_; | |
141 | int scale_index_; | |
142 | int scale_index_drag_offset_; | |
143 | ||
144 | int div_height_; | |
145 | int vdivs_; // divs per positive/negative side | |
146 | float resolution_; // e.g. 10 for 10 V/div | |
147 | }; | |
148 | ||
149 | } // namespace TraceView | |
150 | } // namespace views | |
151 | } // namespace pv | |
152 | ||
153 | #endif // PULSEVIEW_PV_VIEWS_TRACEVIEW_ANALOGSIGNAL_HPP |