pv/views/trace/analogsignal.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_ANALOGSIGNAL_HPP
  21 #define PULSEVIEW_PV_VIEWS_TRACEVIEW_ANALOGSIGNAL_HPP
  22
  23 #include <memory>
  24
  25 #include <QColor>
  26 #include <QComboBox>
  27 #include <QSpinBox>
  28
  29 #include <pv/views/trace/signal.hpp>
  30
  31 using std::pair;
  32 using std::shared_ptr;
  33
  34 namespace pv {
  35
  36 namespace data {
  37 class Analog;
  38 class AnalogSegment;
  39 class SignalBase;
  40 }
  41
  42 namespace views {
  43 namespace trace {
  44
  45 class AnalogSignal : public Signal
  46 {
  47         Q_OBJECT
  48
  49 private:
  50         static const QPen AxisPen;
  51         static const QColor SignalColors[4];
  52         static const QColor GridMajorColor, GridMinorColor;
  53         static const QColor SamplingPointColor;
  54         static const QColor SamplingPointColorLo;
  55         static const QColor SamplingPointColorNe;
  56         static const QColor SamplingPointColorHi;
  57         static const QColor ThresholdColor;
  58         static const QColor ThresholdColorLo;
  59         static const QColor ThresholdColorNe;
  60         static const QColor ThresholdColorHi;
  61
  62         static const int64_t TracePaintBlockSize;
  63         static const float EnvelopeThreshold;
  64
  65         static const int MaximumVDivs;
  66         static const int MaxScaleIndex, MinScaleIndex;
  67         static const int InfoTextMarginRight, InfoTextMarginBottom;
  68
  69         enum DisplayType {
  70                 DisplayAnalog = 0,
  71                 DisplayConverted = 1,
  72                 DisplayBoth = 2
  73         };
  74
  75 public:
  76         AnalogSignal(pv::Session &session, shared_ptr<data::SignalBase> base);
  77
  78         shared_ptr<pv::data::SignalData> data() const;
  79
  80         virtual void save_settings(QSettings &settings) const;
  81
  82         virtual void restore_settings(QSettings &settings);
  83
  84         /**
  85          * Computes the vertical extents of the contents of this row item.
  86          * @return A pair containing the minimum and maximum y-values.
  87          */
  88         pair<int, int> v_extents() const;
  89
  90         /**
  91          * Paints the background layer of the signal with a QPainter
  92          * @param p the QPainter to paint into.
  93          * @param pp the painting parameters object to paint with..
  94          */
  95         void paint_back(QPainter &p, ViewItemPaintParams &pp);
  96
  97         /**
  98          * Paints the mid-layer of the signal with a QPainter
  99          * @param p the QPainter to paint into.
 100          * @param pp the painting parameters object to paint with..
 101          */
 102         void paint_mid(QPainter &p, ViewItemPaintParams &pp);
 103
 104         /**
 105          * Paints the foreground layer of the item with a QPainter
 106          * @param p the QPainter to paint into.
 107          * @param pp the painting parameters object to paint with.
 108          */
 109         void paint_fore(QPainter &p, ViewItemPaintParams &pp);
 110
 111 private:
 112         void paint_grid(QPainter &p, int y, int left, int right);
 113
 114         void paint_trace(QPainter &p,
 115                 const shared_ptr<pv::data::AnalogSegment> &segment,
 116                 int y, int left, const int64_t start, const int64_t end,
 117                 const double pixels_offset, const double samples_per_pixel);
 118
 119         void paint_envelope(QPainter &p,
 120                 const shared_ptr<pv::data::AnalogSegment> &segment,
 121                 int y, int left, const int64_t start, const int64_t end,
 122                 const double pixels_offset, const double samples_per_pixel);
 123
 124         void paint_logic_mid(QPainter &p, ViewItemPaintParams &pp);
 125
 126         void paint_logic_caps(QPainter &p, QLineF *const lines,
 127                 vector< pair<int64_t, bool> > &edges,
 128                 bool level, double samples_per_pixel, double pixels_offset,
 129                 float x_offset, float y_offset);
 130
 131         shared_ptr<pv::data::AnalogSegment> get_analog_segment_to_paint() const;
 132         shared_ptr<pv::data::LogicSegment> get_logic_segment_to_paint() const;
 133
 134         /**
 135          * Computes the scale factor from the scale index and vdiv settings.
 136          */
 137         float get_resolution(int scale_index);
 138
 139         void update_scale();
 140
 141         void update_conversion_widgets();
 142
 143         /**
 144          * Determines the closest level change (i.e. edge) to a given sample, which
 145          * is useful for e.g. the "snap to edge" functionality.
 146          *
 147          * @param sample_pos Sample to use
 148          * @return The changes left and right of the given position
 149          */
 150         virtual vector<data::LogicSegment::EdgePair> get_nearest_level_changes(uint64_t sample_pos);
 151
 152         void perform_autoranging(bool keep_divs, bool force_update);
 153
 154         void reset_pixel_values();
 155         void process_next_sample_value(float x, float value);
 156
 157 protected:
 158         void populate_popup_form(QWidget *parent, QFormLayout *form);
 159
 160         virtual void hover_point_changed(const QPoint &hp);
 161
 162 private Q_SLOTS:
 163         virtual void on_setting_changed(const QString &key, const QVariant &value);
 164
 165         void on_min_max_changed(float min, float max);
 166
 167         void on_pos_vdivs_changed(int vdivs);
 168         void on_neg_vdivs_changed(int vdivs);
 169         void on_div_height_changed(int height);
 170
 171         void on_resolution_changed(int index);
 172
 173         void on_autoranging_changed(int state);
 174
 175         void on_conversion_changed(int index);
 176         void on_conv_threshold_changed(int index=-1);
 177         void on_delayed_conversion_starter();
 178
 179         void on_display_type_changed(int index);
 180
 181 private:
 182         QComboBox *resolution_cb_, *conversion_cb_, *conv_threshold_cb_,
 183                 *display_type_cb_;
 184         QSpinBox *pvdiv_sb_, *nvdiv_sb_, *div_height_sb_;
 185
 186         double signal_min_, signal_max_;  // Min/max values of this signal's analog data
 187
 188         float scale_;
 189         int scale_index_;
 190
 191         int div_height_;
 192         int pos_vdivs_, neg_vdivs_;  // divs per positive/negative side
 193         float resolution_;  // e.g. 10 for 10 V/div
 194
 195         bool show_analog_minor_grid_;
 196         QColor high_fill_color_;
 197         bool show_sampling_points_, fill_high_areas_;
 198
 199         DisplayType display_type_;
 200         bool autoranging_;
 201         int conversion_threshold_disp_mode_;
 202
 203         vector<float> value_at_pixel_pos_;
 204         float value_at_hover_pos_;
 205         float prev_value_at_pixel_;  // Only used during lookup table update
 206         float min_value_at_pixel_, max_value_at_pixel_;  // Only used during lookup table update
 207         int current_pixel_pos_;  // Only used during lookup table update
 208 };
 209
 210 } // namespace trace
 211 } // namespace views
 212 } // namespace pv
 213
 214 #endif // PULSEVIEW_PV_VIEWS_TRACEVIEW_ANALOGSIGNAL_HPP