pv/views/trace/cursorpair.hpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2013 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_TRACE_CURSORPAIR_HPP
  21 #define PULSEVIEW_PV_VIEWS_TRACE_CURSORPAIR_HPP
  22
  23 #include "cursor.hpp"
  24 #include "pv/globalsettings.hpp"
  25
  26 #include <memory>
  27
  28 #include <QColor>
  29 #include <QPainter>
  30 #include <QRect>
  31
  32 using std::pair;
  33 using std::shared_ptr;
  34
  35 class QPainter;
  36
  37 namespace pv {
  38 namespace views {
  39 namespace trace {
  40
  41 class View;
  42
  43 class CursorPair : public TimeItem, public GlobalSettingsInterface
  44 {
  45         Q_OBJECT
  46
  47 private:
  48         static const int DeltaPadding;
  49
  50 public:
  51         /**
  52          * Constructor.
  53          * @param view A reference to the view that owns this cursor pair.
  54          */
  55         CursorPair(View &view);
  56
  57         ~CursorPair();
  58
  59         /**
  60          * Returns true if the item is visible and enabled.
  61          */
  62         bool enabled() const override;
  63
  64         /**
  65          * Returns a pointer to the first cursor.
  66          */
  67         shared_ptr<Cursor> first() const;
  68
  69         /**
  70          * Returns a pointer to the second cursor.
  71          */
  72         shared_ptr<Cursor> second() const;
  73
  74         /**
  75          * Sets the time of the marker.
  76          */
  77         void set_time(const pv::util::Timestamp& time) override;
  78
  79         virtual const pv::util::Timestamp time() const override;
  80
  81         float get_x() const override;
  82
  83         virtual const pv::util::Timestamp delta(const pv::util::Timestamp& other) const override;
  84
  85         QPoint drag_point(const QRect &rect) const override;
  86
  87         pv::widgets::Popup* create_popup(QWidget *parent) override;
  88
  89         QMenu* create_header_context_menu(QWidget *parent) override;
  90
  91         QRectF label_rect(const QRectF &rect) const override;
  92
  93         /**
  94          * Paints the marker's label to the ruler.
  95          * @param p The painter to draw with.
  96          * @param rect The rectangle of the ruler client area.
  97          * @param hover true if the label is being hovered over by the mouse.
  98          */
  99         void paint_label(QPainter &p, const QRect &rect, bool hover) override;
 100
 101         /**
 102          * Paints the background layer of the item with a QPainter
 103          * @param p the QPainter to paint into.
 104          * @param pp the painting parameters object to paint with.
 105          */
 106         void paint_back(QPainter &p, ViewItemPaintParams &pp) override;
 107
 108         /**
 109          * Constructs the string to display.
 110          */
 111         QString format_string(int max_width = 0, std::function<double(const QString&)> query_size
 112                 = [](const QString& s) -> double { (void)s; return 0; });
 113
 114         pair<float, float> get_cursor_offsets() const;
 115
 116         virtual void on_setting_changed(const QString &key, const QVariant &value) override;
 117
 118 public Q_SLOTS:
 119         void on_hover_point_changed(const QWidget* widget, const QPoint &hp);
 120
 121 private:
 122         QString format_string_sub(int time_precision, int freq_precision, bool show_unit = true);
 123
 124 private:
 125         shared_ptr<Cursor> first_, second_;
 126         QColor fill_color_;
 127
 128         QSizeF text_size_;
 129         QRectF label_area_;
 130         bool label_incomplete_;
 131         bool show_interval_, show_frequency_, show_samples_;
 132 };
 133
 134 } // namespace trace
 135 } // namespace views
 136 } // namespace pv
 137
 138 #endif // PULSEVIEW_PV_VIEWS_TRACE_CURSORPAIR_HPP