2 * This file is part of the PulseView project.
4 * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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/>.
20 #ifndef PULSEVIEW_PV_VIEWS_TRACEVIEW_TRACE_HPP
21 #define PULSEVIEW_PV_VIEWS_TRACEVIEW_TRACE_HPP
31 #include "tracetreeitem.hpp"
33 #include <pv/globalsettings.hpp>
34 #include "pv/data/signalbase.hpp"
36 using std::shared_ptr;
54 * The Trace class represents a @ref TraceTreeItem which occupies some vertical
55 * space on the canvas and spans across its entire width, essentially showing
56 * a time series of values, events, objects or similar. While easily confused
57 * with @ref Signal, the difference is that Trace may represent anything that
58 * can be drawn, not just numeric values. One example is a @ref DecodeTrace.
60 * For this reason, Trace is more generic and contains properties and helpers
61 * that benefit any kind of time series items.
63 class Trace : public TraceTreeItem, public GlobalSettingsInterface
69 * Allowed values for the multi-segment display mode.
71 * Note: Consider these locations when updating the list:
73 * @ref View::set_segment_display_mode
74 * @ref View::on_segment_changed
75 * @ref AnalogSignal::get_analog_segment_to_paint
76 * @ref AnalogSignal::get_logic_segment_to_paint
77 * @ref LogicSignal::get_logic_segment_to_paint
80 enum SegmentDisplayMode {
81 ShowLastSegmentOnly = 1,
82 ShowLastCompleteSegmentOnly,
83 ShowSingleSegmentOnly,
85 ShowAccumulatedIntensity
89 static const QPen AxisPen;
90 static const int LabelHitPadding;
92 static const QColor BrightGrayBGColor;
93 static const QColor DarkGrayBGColor;
96 Trace(shared_ptr<data::SignalBase> channel);
101 * Returns the underlying SignalBase instance.
103 shared_ptr<data::SignalBase> base() const;
106 * Returns true if the item may be selected.
108 virtual bool is_selectable(QPoint pos) const;
111 * Returns true if the item may be dragged/moved.
113 virtual bool is_draggable(QPoint pos) const;
116 * Configures the segment display mode to use.
118 virtual void set_segment_display_mode(SegmentDisplayMode mode);
120 virtual void on_setting_changed(const QString &key, const QVariant &value);
123 * Paints the signal label.
124 * @param p the QPainter to paint into.
125 * @param rect the rectangle of the header area.
126 * @param hover true if the label is being hovered over by the mouse.
128 virtual void paint_label(QPainter &p, const QRect &rect, bool hover);
130 virtual QMenu* create_header_context_menu(QWidget *parent);
132 pv::widgets::Popup* create_popup(QWidget *parent);
135 * Computes the outline rectangle of a label.
136 * @param rect the rectangle of the header area.
137 * @return Returns the rectangle of the signal label.
139 QRectF label_rect(const QRectF &rect) const;
142 * Computes the outline rectangle of the viewport hit-box.
143 * @param rect the rectangle of the viewport area.
144 * @return Returns the rectangle of the hit-box.
145 * @remarks The default implementation returns an empty hit-box.
147 virtual QRectF hit_box_rect(const ViewItemPaintParams &pp) const;
149 void set_current_segment(const int segment);
151 int get_current_segment() const;
153 virtual void hover_point_changed(const QPoint &hp);
157 * Paints the background layer of the signal with a QPainter.
158 * @param p The QPainter to paint into.
159 * @param pp The painting parameters object to paint with.
161 virtual void paint_back(QPainter &p, ViewItemPaintParams &pp);
164 * Paints a zero axis across the viewport.
165 * @param p the QPainter to paint into.
166 * @param pp the painting parameters object to paint with.
167 * @param y the y-offset of the axis.
169 void paint_axis(QPainter &p, ViewItemPaintParams &pp, int y);
172 * Draw a hover marker under the cursor position.
173 * @param p The painter to draw into.
175 void paint_hover_marker(QPainter &p);
177 void add_color_option(QWidget *parent, QFormLayout *form);
179 void create_popup_form();
181 virtual void populate_popup_form(QWidget *parent, QFormLayout *form);
184 virtual void on_name_changed(const QString &text);
186 virtual void on_color_changed(const QColor &color);
188 void on_popup_closed();
191 void on_nameedit_changed(const QString &name);
193 void on_coloredit_changed(const QColor &color);
196 shared_ptr<data::SignalBase> base_;
199 SegmentDisplayMode segment_display_mode_;
200 bool show_hover_marker_;
202 /// The ID of the currently displayed segment
203 int current_segment_;
206 pv::widgets::Popup *popup_;
207 QFormLayout *popup_form_;
214 #endif // PULSEVIEW_PV_VIEWS_TRACEVIEW_TRACE_HPP