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, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef PULSEVIEW_PV_TRACE_H
22 #define PULSEVIEW_PV_TRACE_H
32 #include "selectableitem.h"
42 class Trace : public SelectableItem
47 static const QPen AxisPen;
48 static const int LabelHitPadding;
51 Trace(SigSession &session, QString name);
55 * Gets the name of this signal.
57 QString get_name() const;
60 * Sets the name of the signal.
62 virtual void set_name(QString name);
65 * Get the colour of the signal.
67 QColor get_colour() const;
70 * Set the colour of the signal.
72 void set_colour(QColor colour);
75 * Gets the vertical layout offset of this signal.
77 int get_v_offset() const;
80 * Sets the vertical layout offset of this signal.
82 void set_v_offset(int v_offset);
85 * Returns true if the trace is visible and enabled.
87 virtual bool enabled() const = 0;
89 virtual void set_view(pv::view::View *view);
92 * Paints the background layer of the trace with a QPainter
93 * @param p the QPainter to paint into.
94 * @param left the x-coordinate of the left edge of the signal
95 * @param right the x-coordinate of the right edge of the signal
97 virtual void paint_back(QPainter &p, int left, int right);
100 * Paints the mid-layer of the trace with a QPainter
101 * @param p the QPainter to paint into.
102 * @param left the x-coordinate of the left edge of the signal
103 * @param right the x-coordinate of the right edge of the signal
105 virtual void paint_mid(QPainter &p, int left, int right);
108 * Paints the foreground layer of the trace with a QPainter
109 * @param p the QPainter to paint into.
110 * @param left the x-coordinate of the left edge of the signal
111 * @param right the x-coordinate of the right edge of the signal
113 virtual void paint_fore(QPainter &p, int left, int right);
116 * Paints the signal label into a QGLWidget.
117 * @param p the QPainter to paint into.
118 * @param right the x-coordinate of the right edge of the header
120 * @param hover true if the label is being hovered over by the mouse.
122 virtual void paint_label(QPainter &p, int right, bool hover);
125 * Determines if a point is in the header label rect.
126 * @param left the x-coordinate of the left edge of the header
128 * @param right the x-coordinate of the right edge of the header
130 * @param point the point to test.
132 bool pt_in_label_rect(int left, int right, const QPoint &point);
136 * Gets the y-offset of the axis.
141 * Gets the text colour.
142 * @remarks This colour is computed by comparing the lightness
143 * of the trace colour against a threshold to determine whether
144 * white or black would be more visible.
146 QColor get_text_colour() const;
149 * Paints a zero axis across the viewport.
150 * @param p the QPainter to paint into.
151 * @param y the y-offset of the axis.
152 * @param left the x-coordinate of the left edge of the view.
153 * @param right the x-coordinate of the right edge of the view.
155 void paint_axis(QPainter &p, int y, int left, int right);
160 * Computes an caches the size of the label text.
162 void compute_text_size(QPainter &p);
165 * Computes the outline rectangle of a label.
166 * @param p the QPainter to lay out text with.
167 * @param right the x-coordinate of the right edge of the header
169 * @return Returns the rectangle of the signal label.
171 QRectF get_label_rect(int right);
177 pv::SigSession &_session;
178 pv::view::View *_view;
190 #endif // PULSEVIEW_PV_TRACEL_H