2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 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
24 #include "pv/util.hpp"
26 #include <QApplication>
38 using std::shared_ptr;
39 using std::numeric_limits;
44 const QColor Cursor::FillColour(52, 101, 164);
46 Cursor::Cursor(View &view, double time) :
47 TimeMarker(view, FillColour, time)
51 bool Cursor::enabled() const
53 return view_.cursors_shown();
56 QString Cursor::get_text() const
58 return util::format_time(time_, view_.tick_prefix(),
59 view_.time_unit(), 2);
62 QRectF Cursor::label_rect(const QRectF &rect) const
64 const shared_ptr<Cursor> other(get_other_cursor());
67 const float x = (time_ - view_.offset()) / view_.scale();
69 QFontMetrics m(QApplication::font());
70 QSize text_size = m.boundingRect(get_text()).size();
72 const QSizeF label_size(
73 text_size.width() + LabelPadding.width() * 2,
74 text_size.height() + LabelPadding.height() * 2);
75 const float top = rect.height() - label_size.height() -
76 TimeMarker::ArrowSize - 0.5f;
77 const float height = label_size.height();
79 const double other_time = other->time();
80 if (time_ > other_time ||
81 (abs(time_ - other_time) < numeric_limits<double>::epsilon() &&
83 return QRectF(x, top, label_size.width(), height);
85 return QRectF(x - label_size.width(), top,
86 label_size.width(), height);
89 shared_ptr<Cursor> Cursor::get_other_cursor() const
91 const shared_ptr<CursorPair> cursors(view_.cursors());
93 return (cursors->first().get() == this) ?
94 cursors->second() : cursors->first();