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1 | /* |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2013 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 <assert.h> | |
24 | #include <math.h> | |
25 | ||
26 | #include "trace.h" | |
27 | #include "view.h" | |
28 | ||
29 | namespace pv { | |
30 | namespace view { | |
31 | ||
32 | const int Trace::LabelHitPadding = 2; | |
33 | ||
34 | Trace::Trace(pv::SigSession &session, QString name) : | |
35 | _session(session), | |
36 | _name(name), | |
37 | _v_offset(0) | |
38 | { | |
39 | } | |
40 | ||
41 | QString Trace::get_name() const | |
42 | { | |
43 | return _name; | |
44 | } | |
45 | ||
46 | void Trace::set_name(QString name) | |
47 | { | |
48 | _name = name; | |
49 | } | |
50 | ||
51 | QColor Trace::get_colour() const | |
52 | { | |
53 | return _colour; | |
54 | } | |
55 | ||
56 | void Trace::set_colour(QColor colour) | |
57 | { | |
58 | _colour = colour; | |
59 | } | |
60 | ||
61 | int Trace::get_v_offset() const | |
62 | { | |
63 | return _v_offset; | |
64 | } | |
65 | ||
66 | void Trace::set_v_offset(int v_offset) | |
67 | { | |
68 | _v_offset = v_offset; | |
69 | } | |
70 | ||
71 | void Trace::paint_label(QPainter &p, int y, int right, bool hover) | |
72 | { | |
73 | p.setBrush(_colour); | |
74 | ||
75 | if (!enabled()) | |
76 | return; | |
77 | ||
78 | const QColor colour = get_colour(); | |
79 | ||
80 | compute_text_size(p); | |
81 | const QRectF label_rect = get_label_rect(y, right); | |
82 | ||
83 | // Paint the label | |
84 | const QPointF points[] = { | |
85 | label_rect.topLeft(), | |
86 | label_rect.topRight(), | |
87 | QPointF(right, y), | |
88 | label_rect.bottomRight(), | |
89 | label_rect.bottomLeft() | |
90 | }; | |
91 | ||
92 | const QPointF highlight_points[] = { | |
93 | QPointF(label_rect.left() + 1, label_rect.top() + 1), | |
94 | QPointF(label_rect.right(), label_rect.top() + 1), | |
95 | QPointF(right - 1, y), | |
96 | QPointF(label_rect.right(), label_rect.bottom() - 1), | |
97 | QPointF(label_rect.left() + 1, label_rect.bottom() - 1) | |
98 | }; | |
99 | ||
100 | if (selected()) { | |
101 | p.setPen(highlight_pen()); | |
102 | p.setBrush(Qt::transparent); | |
103 | p.drawPolygon(points, countof(points)); | |
104 | } | |
105 | ||
106 | p.setPen(Qt::transparent); | |
107 | p.setBrush(hover ? colour.lighter() : colour); | |
108 | p.drawPolygon(points, countof(points)); | |
109 | ||
110 | p.setPen(colour.lighter()); | |
111 | p.setBrush(Qt::transparent); | |
112 | p.drawPolygon(highlight_points, countof(highlight_points)); | |
113 | ||
114 | p.setPen(colour.darker()); | |
115 | p.setBrush(Qt::transparent); | |
116 | p.drawPolygon(points, countof(points)); | |
117 | ||
118 | // Paint the text | |
119 | p.setPen((colour.lightness() > 64) ? Qt::black : Qt::white); | |
120 | p.drawText(label_rect, Qt::AlignCenter | Qt::AlignVCenter, _name); | |
121 | } | |
122 | ||
123 | bool Trace::pt_in_label_rect(int y, int left, int right, | |
124 | const QPoint &point) | |
125 | { | |
126 | (void)left; | |
127 | ||
128 | const QRectF label = get_label_rect(y, right); | |
129 | return QRectF( | |
130 | QPointF(label.left() - LabelHitPadding, | |
131 | label.top() - LabelHitPadding), | |
132 | QPointF(right, label.bottom() + LabelHitPadding) | |
133 | ).contains(point); | |
134 | } | |
135 | ||
136 | void Trace::compute_text_size(QPainter &p) | |
137 | { | |
138 | _text_size = QSize( | |
139 | p.boundingRect(QRectF(), 0, _name).width(), | |
140 | p.boundingRect(QRectF(), 0, "Tg").height()); | |
141 | } | |
142 | ||
143 | QRectF Trace::get_label_rect(int y, int right) | |
144 | { | |
145 | using pv::view::View; | |
146 | ||
147 | const QSizeF label_size( | |
148 | _text_size.width() + View::LabelPadding.width() * 2, | |
149 | ceilf((_text_size.height() + View::LabelPadding.height() * 2) / 2) * 2); | |
150 | const float label_arrow_length = label_size.height() / 2; | |
151 | return QRectF( | |
152 | right - label_arrow_length - label_size.width() - 0.5, | |
153 | y + 0.5f - label_size.height() / 2, | |
154 | label_size.width(), label_size.height()); | |
155 | } | |
156 | ||
157 | } // namespace view | |
158 | } // namespace pv |