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Rework decoder infrastructure
[pulseview.git] / pv / views / trace / decodetrace.hpp
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_DECODETRACE_HPP
21 #define PULSEVIEW_PV_VIEWS_TRACEVIEW_DECODETRACE_HPP
22
23 #include "trace.hpp"
24
25 #include <list>
26 #include <map>
27 #include <memory>
28 #include <vector>
29
30 #include <QColor>
31 #include <QCheckBox>
32 #include <QPolygon>
33 #include <QPushButton>
34 #include <QSignalMapper>
35 #include <QTimer>
36
37 #include <pv/binding/decoder.hpp>
38 #include <pv/data/decode/decoder.hpp>
39 #include <pv/data/decode/annotation.hpp>
40 #include <pv/data/decode/row.hpp>
41 #include <pv/data/signalbase.hpp>
42
43 using std::deque;
44 using std::list;
45 using std::map;
46 using std::mutex;
47 using std::pair;
48 using std::shared_ptr;
49 using std::vector;
50
51 using pv::data::decode::Row;
52
53 struct srd_channel;
54 struct srd_decoder;
55
56 namespace pv {
57
58 class Session;
59
60 namespace data {
61 struct DecodeChannel;
62 class DecodeSignal;
63
64 namespace decode {
65 class Decoder;
66 class Row;
67 }
68 }  // namespace data
69
70 namespace widgets {
71 class DecoderGroupBox;
72 }
73
74 namespace views {
75 namespace trace {
76
77 struct DecodeTraceRow {
78         // When adding a field, make sure it's initialized properly in
79         // DecodeTrace::update_rows()
80
81         Row* decode_row;
82         unsigned int height, expanded_height, title_width, animation_step;
83         bool exists, currently_visible;
84         bool expand_marker_highlighted, expanding, expanded, collapsing;
85         QPolygon expand_marker_shape;
86         float anim_height, anim_shape;
87
88         QWidget* container;
89         QWidget* header_container;
90         QWidget* selector_container;
91         vector<QCheckBox*> selectors;
92 };
93
94 class DecodeTrace : public Trace
95 {
96         Q_OBJECT
97
98 private:
99         static const QColor ErrorBgColor;
100         static const QColor NoDecodeColor;
101         static const uint8_t ExpansionAreaHeaderAlpha;
102         static const uint8_t ExpansionAreaAlpha;
103
104         static const int ArrowSize;
105         static const double EndCapWidth;
106         static const int RowTitleMargin;
107         static const int DrawPadding;
108
109         static const int MaxTraceUpdateRate;
110         static const unsigned int AnimationDurationInTicks;
111
112 public:
113         DecodeTrace(pv::Session &session, shared_ptr<data::SignalBase> signalbase,
114                 int index);
115
116         ~DecodeTrace();
117
118         bool enabled() const;
119
120         shared_ptr<data::SignalBase> base() const;
121
122         /**
123          * Computes the vertical extents of the contents of this row item.
124          * @return A pair containing the minimum and maximum y-values.
125          */
126         pair<int, int> v_extents() const;
127
128         /**
129          * Paints the background layer of the trace with a QPainter
130          * @param p the QPainter to paint into.
131          * @param pp the painting parameters object to paint with..
132          */
133         void paint_back(QPainter &p, ViewItemPaintParams &pp);
134
135         /**
136          * Paints the mid-layer of the trace with a QPainter
137          * @param p the QPainter to paint into.
138          * @param pp the painting parameters object to paint with.
139          */
140         void paint_mid(QPainter &p, ViewItemPaintParams &pp);
141
142         /**
143          * Paints the foreground layer of the trace with a QPainter
144          * @param p the QPainter to paint into.
145          * @param pp the painting parameters object to paint with.
146          */
147         void paint_fore(QPainter &p, ViewItemPaintParams &pp);
148
149         void populate_popup_form(QWidget *parent, QFormLayout *form);
150
151         QMenu* create_header_context_menu(QWidget *parent);
152
153         virtual QMenu* create_view_context_menu(QWidget *parent, QPoint &click_pos);
154
155         virtual void delete_pressed();
156
157         virtual void hover_point_changed(const QPoint &hp);
158
159         virtual void mouse_left_press_event(const QMouseEvent* event);
160
161 private:
162         void draw_annotations(vector<pv::data::decode::Annotation> annotations,
163                 QPainter &p, int h, const ViewItemPaintParams &pp, int y,
164                 QColor row_color, int row_title_width);
165
166         void draw_annotation(const pv::data::decode::Annotation &a, QPainter &p,
167                 int h, const ViewItemPaintParams &pp, int y,
168                 QColor row_color, int row_title_width) const;
169
170         void draw_annotation_block(qreal start, qreal end,
171                 pv::data::decode::Annotation::Class ann_class, bool use_ann_format,
172                 QPainter &p, int h, int y, QColor row_color) const;
173
174         void draw_instant(const pv::data::decode::Annotation &a, QPainter &p,
175                 int h, qreal x, int y) const;
176
177         void draw_range(const pv::data::decode::Annotation &a, QPainter &p,
178                 int h, qreal start, qreal end, int y, const ViewItemPaintParams &pp,
179                 int row_title_width) const;
180
181         void draw_error(QPainter &p, const QString &message,
182                 const ViewItemPaintParams &pp);
183
184         void draw_unresolved_period(QPainter &p, int h, int left,
185                 int right) const;
186
187         pair<double, double> get_pixels_offset_samples_per_pixel() const;
188
189         /**
190          * Determines the start and end sample for a given pixel range.
191          * @param x_start the X coordinate of the start sample in the view
192          * @param x_end the X coordinate of the end sample in the view
193          * @return Returns a pair containing the start sample and the end
194          *      sample that correspond to the start and end coordinates.
195          */
196         pair<uint64_t, uint64_t> get_view_sample_range(int x_start, int x_end) const;
197
198         QColor get_row_color(int row_index) const;
199         QColor get_annotation_color(QColor row_color, int annotation_index) const;
200
201         unsigned int get_row_y(const DecodeTraceRow* row) const;
202
203         DecodeTraceRow* get_row_at_point(const QPoint &point);
204
205         const QString get_annotation_at_point(const QPoint &point);
206
207         void update_stack_button();
208
209         void create_decoder_form(int index,
210                 shared_ptr<pv::data::decode::Decoder> &dec,
211                 QWidget *parent, QFormLayout *form);
212
213         QComboBox* create_channel_selector(QWidget *parent,
214                 const data::decode::DecodeChannel *ch);
215         QComboBox* create_channel_selector_init_state(QWidget *parent,
216                 const data::decode::DecodeChannel *ch);
217
218         void export_annotations(vector<data::decode::Annotation> *annotations) const;
219
220         void initialize_row_widgets(DecodeTraceRow* r, unsigned int row_id);
221         void update_rows();
222
223         /**
224          * Sets row r to expanded state without forcing an update of the view
225          */
226         void set_row_expanded(DecodeTraceRow* r);
227
228         /**
229          * Sets row r to collapsed state without forcing an update of the view
230          */
231         void set_row_collapsed(DecodeTraceRow* r);
232
233         void update_expanded_rows();
234
235 private Q_SLOTS:
236         void on_setting_changed(const QString &key, const QVariant &value);
237
238         void on_new_annotations();
239         void on_delayed_trace_update();
240         void on_decode_reset();
241         void on_decode_finished();
242         void on_pause_decode();
243
244         void on_delete();
245
246         void on_channel_selected(int);
247
248         void on_channels_updated();
249
250         void on_init_state_changed(int);
251
252         void on_stack_decoder(srd_decoder *decoder);
253
254         void on_delete_decoder(int index);
255
256         void on_show_hide_decoder(int index);
257         void on_show_hide_row(int row_id);
258         void on_show_hide_class(QWidget* sender);
259
260         void on_copy_annotation_to_clipboard();
261
262         void on_export_row();
263         void on_export_all_rows();
264         void on_export_row_with_cursor();
265         void on_export_all_rows_with_cursor();
266         void on_export_row_from_here();
267         void on_export_all_rows_from_here();
268
269         void on_animation_timer();
270
271 private:
272         pv::Session &session_;
273         shared_ptr<data::DecodeSignal> decode_signal_;
274
275         deque<DecodeTraceRow> rows_;
276         mutable mutex row_modification_mutex_;
277
278         map<QComboBox*, uint16_t> channel_id_map_;  // channel selector -> decode channel ID
279         map<QComboBox*, uint16_t> init_state_map_;  // init state selector -> decode channel ID
280         list< shared_ptr<pv::binding::Decoder> > bindings_;
281
282         const Row* selected_row_;
283         pair<uint64_t, uint64_t> selected_sample_range_;
284
285         vector<pv::widgets::DecoderGroupBox*> decoder_forms_;
286         QPushButton* stack_button_;
287
288         unsigned int default_row_height_, annotation_height_;
289         unsigned int visible_rows_, max_visible_rows_;
290
291         int min_useful_label_width_;
292         bool always_show_all_rows_;
293
294         QSignalMapper delete_mapper_, show_hide_mapper_;
295         QSignalMapper row_show_hide_mapper_, class_show_hide_mapper_;
296
297         QTimer delayed_trace_updater_, animation_timer_;
298
299         QPolygon default_marker_shape_;
300 };
301
302 } // namespace trace
303 } // namespace views
304 } // namespace pv
305
306 #endif // PULSEVIEW_PV_VIEWS_TRACEVIEW_DECODETRACE_HPP