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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 | ||
abad24e2 | 23 | #include "ruler.h" |
84a0d458 JS |
24 | #include "view.h" |
25 | ||
26 | #include <QApplication> | |
4707a23d | 27 | #include <QFontMetrics> |
84a0d458 JS |
28 | #include <QMouseEvent> |
29 | ||
30 | #include <pv/widgets/popup.h> | |
31 | ||
32 | using std::shared_ptr; | |
33 | ||
34 | namespace pv { | |
35 | namespace view { | |
36 | ||
4707a23d | 37 | const int CursorHeader::Padding = 20; |
4d95ef60 | 38 | const int CursorHeader::BaselineOffset = 5; |
4707a23d JS |
39 | |
40 | int CursorHeader::calculateTextHeight() | |
41 | { | |
42 | QFontMetrics fm(font()); | |
43 | return fm.boundingRect(0, 0, INT_MAX, INT_MAX, | |
44 | Qt::AlignLeft | Qt::AlignTop, "8").height(); | |
45 | } | |
84a0d458 JS |
46 | |
47 | CursorHeader::CursorHeader(View &parent) : | |
48 | MarginWidget(parent), | |
4707a23d JS |
49 | _dragging(false), |
50 | _textHeight(calculateTextHeight()) | |
84a0d458 JS |
51 | { |
52 | setMouseTracking(true); | |
53 | } | |
54 | ||
55 | QSize CursorHeader::sizeHint() const | |
56 | { | |
4d95ef60 | 57 | return QSize(0, _textHeight + Padding + BaselineOffset); |
84a0d458 JS |
58 | } |
59 | ||
60 | void CursorHeader::clear_selection() | |
61 | { | |
62 | CursorPair &cursors = _view.cursors(); | |
63 | cursors.first()->select(false); | |
64 | cursors.second()->select(false); | |
65 | update(); | |
66 | } | |
67 | ||
68 | void CursorHeader::paintEvent(QPaintEvent*) | |
69 | { | |
70 | QPainter p(this); | |
71 | p.setRenderHint(QPainter::Antialiasing); | |
72 | ||
abad24e2 JS |
73 | unsigned int prefix = pv::view::Ruler::calculate_tick_spacing( |
74 | p, _view.scale(), _view.offset()).second; | |
75 | ||
84a0d458 JS |
76 | // Draw the cursors |
77 | if (_view.cursors_shown()) { | |
4d95ef60 JS |
78 | // The cursor labels are not drawn with the arrows exactly on the |
79 | // bottom line of the widget, because then the selection shadow | |
80 | // would be clipped away. | |
81 | const QRect r = rect().adjusted(0, 0, 0, -BaselineOffset); | |
82 | _view.cursors().draw_markers(p, r, prefix); | |
84a0d458 JS |
83 | } |
84 | } | |
85 | ||
86 | void CursorHeader::mouseMoveEvent(QMouseEvent *e) | |
87 | { | |
88 | if (!(e->buttons() & Qt::LeftButton)) | |
89 | return; | |
90 | ||
91 | if ((e->pos() - _mouse_down_point).manhattanLength() < | |
92 | QApplication::startDragDistance()) | |
93 | return; | |
94 | ||
95 | _dragging = true; | |
96 | ||
97 | if (shared_ptr<TimeMarker> m = _grabbed_marker.lock()) | |
98 | m->set_time(_view.offset() + | |
99 | ((double)e->x() + 0.5) * _view.scale()); | |
100 | } | |
101 | ||
102 | void CursorHeader::mousePressEvent(QMouseEvent *e) | |
103 | { | |
104 | if (e->buttons() & Qt::LeftButton) { | |
105 | _mouse_down_point = e->pos(); | |
106 | ||
107 | _grabbed_marker.reset(); | |
108 | ||
109 | clear_selection(); | |
110 | ||
111 | if (_view.cursors_shown()) { | |
112 | CursorPair &cursors = _view.cursors(); | |
113 | if (cursors.first()->get_label_rect( | |
114 | rect()).contains(e->pos())) | |
115 | _grabbed_marker = cursors.first(); | |
116 | else if (cursors.second()->get_label_rect( | |
117 | rect()).contains(e->pos())) | |
118 | _grabbed_marker = cursors.second(); | |
119 | } | |
120 | ||
121 | if (shared_ptr<TimeMarker> m = _grabbed_marker.lock()) | |
122 | m->select(); | |
123 | ||
124 | selection_changed(); | |
125 | } | |
126 | } | |
127 | ||
128 | void CursorHeader::mouseReleaseEvent(QMouseEvent *) | |
129 | { | |
130 | using pv::widgets::Popup; | |
131 | ||
132 | if (!_dragging) | |
133 | if (shared_ptr<TimeMarker> m = _grabbed_marker.lock()) { | |
134 | Popup *const p = m->create_popup(&_view); | |
4d95ef60 JS |
135 | const QPoint arrpos(m->get_x(), height() - BaselineOffset); |
136 | p->set_position(mapToGlobal(arrpos), Popup::Bottom); | |
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137 | p->show(); |
138 | } | |
139 | ||
140 | _dragging = false; | |
141 | _grabbed_marker.reset(); | |
142 | } | |
143 | ||
144 | } // namespace view | |
145 | } // namespace pv |