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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 | #include "cursor.hpp" | |
21 | ||
22 | #include "pv/util.hpp" | |
23 | #include "ruler.hpp" | |
24 | #include "view.hpp" | |
25 | ||
26 | #include <QApplication> | |
27 | #include <QBrush> | |
28 | #include <QPainter> | |
29 | #include <QPointF> | |
30 | #include <QRect> | |
31 | #include <QRectF> | |
32 | ||
33 | #include <cassert> | |
34 | #include <cstdio> | |
35 | #include <limits> | |
36 | ||
37 | using std::abs; // Force usage of std::abs() instead of C's abs(). | |
38 | using std::shared_ptr; | |
39 | ||
40 | namespace pv { | |
41 | namespace views { | |
42 | namespace TraceView { | |
43 | ||
44 | const QColor Cursor::FillColour(52, 101, 164); | |
45 | ||
46 | Cursor::Cursor(View &view, double time) : | |
47 | TimeMarker(view, FillColour, time) | |
48 | { | |
49 | } | |
50 | ||
51 | bool Cursor::enabled() const | |
52 | { | |
53 | return view_.cursors_shown(); | |
54 | } | |
55 | ||
56 | QString Cursor::get_text() const | |
57 | { | |
58 | const shared_ptr<Cursor> other = get_other_cursor(); | |
59 | const pv::util::Timestamp& diff = abs(time_ - other->time_); | |
60 | ||
61 | return Ruler::format_time_with_distance( | |
62 | diff, time_, view_.tick_prefix(), view_.time_unit(), view_.tick_precision()); | |
63 | } | |
64 | ||
65 | QRectF Cursor::label_rect(const QRectF &rect) const | |
66 | { | |
67 | const shared_ptr<Cursor> other(get_other_cursor()); | |
68 | assert(other); | |
69 | ||
70 | const float x = get_x(); | |
71 | ||
72 | QFontMetrics m(QApplication::font()); | |
73 | QSize text_size = m.boundingRect(get_text()).size(); | |
74 | ||
75 | const QSizeF label_size( | |
76 | text_size.width() + LabelPadding.width() * 2, | |
77 | text_size.height() + LabelPadding.height() * 2); | |
78 | const float top = rect.height() - label_size.height() - | |
79 | TimeMarker::ArrowSize - 0.5f; | |
80 | const float height = label_size.height(); | |
81 | ||
82 | const pv::util::Timestamp& other_time = other->time(); | |
83 | ||
84 | if (time_ > other_time || | |
85 | (abs(time_ - other_time).is_zero() && this > other.get())) | |
86 | return QRectF(x, top, label_size.width(), height); | |
87 | else | |
88 | return QRectF(x - label_size.width(), top, label_size.width(), height); | |
89 | } | |
90 | ||
91 | shared_ptr<Cursor> Cursor::get_other_cursor() const | |
92 | { | |
93 | const shared_ptr<CursorPair> cursors(view_.cursors()); | |
94 | assert(cursors); | |
95 | return (cursors->first().get() == this) ? | |
96 | cursors->second() : cursors->first(); | |
97 | } | |
98 | ||
99 | } // namespace TraceView | |
100 | } // namespace views | |
101 | } // namespace pv |