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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 "cursorheader.h" | |
22 | ||
23 | #include "view.h" | |
24 | ||
25 | #include <QApplication> | |
4707a23d | 26 | #include <QFontMetrics> |
84a0d458 JS |
27 | #include <QMouseEvent> |
28 | ||
29 | #include <pv/widgets/popup.h> | |
30 | ||
31 | using std::shared_ptr; | |
32 | ||
33 | namespace pv { | |
34 | namespace view { | |
35 | ||
4707a23d JS |
36 | const int CursorHeader::Padding = 20; |
37 | ||
38 | int CursorHeader::calculateTextHeight() | |
39 | { | |
40 | QFontMetrics fm(font()); | |
41 | return fm.boundingRect(0, 0, INT_MAX, INT_MAX, | |
42 | Qt::AlignLeft | Qt::AlignTop, "8").height(); | |
43 | } | |
84a0d458 JS |
44 | |
45 | CursorHeader::CursorHeader(View &parent) : | |
46 | MarginWidget(parent), | |
4707a23d JS |
47 | _dragging(false), |
48 | _textHeight(calculateTextHeight()) | |
84a0d458 JS |
49 | { |
50 | setMouseTracking(true); | |
51 | } | |
52 | ||
53 | QSize CursorHeader::sizeHint() const | |
54 | { | |
4707a23d | 55 | return QSize(0, _textHeight + Padding); |
84a0d458 JS |
56 | } |
57 | ||
58 | void CursorHeader::clear_selection() | |
59 | { | |
60 | CursorPair &cursors = _view.cursors(); | |
61 | cursors.first()->select(false); | |
62 | cursors.second()->select(false); | |
63 | update(); | |
64 | } | |
65 | ||
66 | void CursorHeader::paintEvent(QPaintEvent*) | |
67 | { | |
68 | QPainter p(this); | |
69 | p.setRenderHint(QPainter::Antialiasing); | |
70 | ||
71 | // Draw the cursors | |
72 | if (_view.cursors_shown()) { | |
73 | _view.cursors().draw_markers(p, rect(), 0); //prefix); | |
74 | } | |
75 | } | |
76 | ||
77 | void CursorHeader::mouseMoveEvent(QMouseEvent *e) | |
78 | { | |
79 | if (!(e->buttons() & Qt::LeftButton)) | |
80 | return; | |
81 | ||
82 | if ((e->pos() - _mouse_down_point).manhattanLength() < | |
83 | QApplication::startDragDistance()) | |
84 | return; | |
85 | ||
86 | _dragging = true; | |
87 | ||
88 | if (shared_ptr<TimeMarker> m = _grabbed_marker.lock()) | |
89 | m->set_time(_view.offset() + | |
90 | ((double)e->x() + 0.5) * _view.scale()); | |
91 | } | |
92 | ||
93 | void CursorHeader::mousePressEvent(QMouseEvent *e) | |
94 | { | |
95 | if (e->buttons() & Qt::LeftButton) { | |
96 | _mouse_down_point = e->pos(); | |
97 | ||
98 | _grabbed_marker.reset(); | |
99 | ||
100 | clear_selection(); | |
101 | ||
102 | if (_view.cursors_shown()) { | |
103 | CursorPair &cursors = _view.cursors(); | |
104 | if (cursors.first()->get_label_rect( | |
105 | rect()).contains(e->pos())) | |
106 | _grabbed_marker = cursors.first(); | |
107 | else if (cursors.second()->get_label_rect( | |
108 | rect()).contains(e->pos())) | |
109 | _grabbed_marker = cursors.second(); | |
110 | } | |
111 | ||
112 | if (shared_ptr<TimeMarker> m = _grabbed_marker.lock()) | |
113 | m->select(); | |
114 | ||
115 | selection_changed(); | |
116 | } | |
117 | } | |
118 | ||
119 | void CursorHeader::mouseReleaseEvent(QMouseEvent *) | |
120 | { | |
121 | using pv::widgets::Popup; | |
122 | ||
123 | if (!_dragging) | |
124 | if (shared_ptr<TimeMarker> m = _grabbed_marker.lock()) { | |
125 | Popup *const p = m->create_popup(&_view); | |
126 | p->set_position(mapToGlobal(QPoint(m->get_x(), | |
127 | height())), Popup::Bottom); | |
128 | p->show(); | |
129 | } | |
130 | ||
131 | _dragging = false; | |
132 | _grabbed_marker.reset(); | |
133 | } | |
134 | ||
135 | } // namespace view | |
136 | } // namespace pv |