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