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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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <extdef.h> | |
22 | ||
23 | #include "signal.h" | |
24 | #include "view/view.h" | |
25 | ||
26 | namespace pv { | |
27 | ||
28 | const int Signal::LabelHitPadding = 2; | |
29 | ||
30 | Signal::Signal(QString name) : | |
31 | _name(name) | |
32 | { | |
33 | } | |
34 | ||
35 | QString Signal::get_name() const | |
36 | { | |
37 | return _name; | |
38 | } | |
39 | ||
40 | void Signal::set_name(QString name) | |
41 | { | |
42 | _name = name; | |
43 | } | |
44 | ||
45 | QColor Signal::get_colour() const | |
46 | { | |
47 | return _colour; | |
48 | } | |
49 | ||
50 | void Signal::set_colour(QColor colour) | |
51 | { | |
52 | _colour = colour; | |
53 | } | |
54 | ||
55 | void Signal::paint_label(QPainter &p, const QRect &rect, bool hover) | |
56 | { | |
57 | p.setBrush(_colour); | |
58 | ||
59 | const QColor colour = get_colour(); | |
60 | const float nominal_offset = get_nominal_offset(rect); | |
61 | ||
62 | compute_text_size(p); | |
63 | const QRectF label_rect = get_label_rect(rect); | |
64 | ||
65 | // Paint the label | |
66 | const QPointF points[] = { | |
67 | label_rect.topLeft(), | |
68 | label_rect.topRight(), | |
69 | QPointF(rect.right(), nominal_offset), | |
70 | label_rect.bottomRight(), | |
71 | label_rect.bottomLeft() | |
72 | }; | |
73 | ||
74 | const QPointF highlight_points[] = { | |
75 | QPointF(label_rect.left() + 1, label_rect.top() + 1), | |
76 | QPointF(label_rect.right(), label_rect.top() + 1), | |
77 | QPointF(rect.right() - 1, nominal_offset), | |
78 | QPointF(label_rect.right(), label_rect.bottom() - 1), | |
79 | QPointF(label_rect.left() + 1, label_rect.bottom() - 1) | |
80 | }; | |
81 | ||
82 | p.setPen(Qt::transparent); | |
83 | p.setBrush(hover ? colour.lighter() : colour); | |
84 | p.drawPolygon(points, countof(points)); | |
85 | ||
86 | p.setPen(colour.lighter()); | |
87 | p.setBrush(Qt::transparent); | |
88 | p.drawPolygon(highlight_points, countof(highlight_points)); | |
89 | ||
90 | p.setPen(colour.darker()); | |
91 | p.setBrush(Qt::transparent); | |
92 | p.drawPolygon(points, countof(points)); | |
93 | ||
94 | // Paint the text | |
95 | p.setPen((colour.lightness() > 64) ? Qt::black : Qt::white); | |
96 | p.drawText(label_rect, Qt::AlignCenter | Qt::AlignVCenter, _name); | |
97 | } | |
98 | ||
99 | bool Signal::pt_in_label_rect(const QRect &rect, const QPoint &point) | |
100 | { | |
101 | const QRectF label = get_label_rect(rect); | |
102 | return QRectF( | |
103 | QPointF(label.left() - LabelHitPadding, | |
104 | label.top() - LabelHitPadding), | |
105 | QPointF(rect.right(), | |
106 | label.bottom() + LabelHitPadding) | |
107 | ).contains(point); | |
108 | } | |
109 | ||
110 | void Signal::compute_text_size(QPainter &p) | |
111 | { | |
112 | _text_size = p.boundingRect(QRectF(), 0, _name).size(); | |
113 | } | |
114 | ||
115 | QRectF Signal::get_label_rect(const QRect &rect) | |
116 | { | |
117 | using pv::view::View; | |
118 | ||
119 | const float nominal_offset = get_nominal_offset(rect) + 0.5; | |
120 | const QSizeF label_size( | |
121 | _text_size.width() + View::LabelPadding.width() * 2, | |
122 | _text_size.height() + View::LabelPadding.height() * 2); | |
123 | const float label_arrow_length = label_size.height() / 2; | |
124 | return QRectF( | |
125 | rect.right() - label_arrow_length - | |
126 | label_size.width() - 0.5, | |
127 | nominal_offset - label_size.height() / 2, | |
128 | label_size.width(), label_size.height()); | |
129 | } | |
130 | ||
131 | } // namespace pv |