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84a0d458 JS |
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 | ||
2acdb232 | 21 | #include "cursorheader.hpp" |
84a0d458 | 22 | |
2acdb232 JH |
23 | #include "ruler.hpp" |
24 | #include "view.hpp" | |
84a0d458 JS |
25 | |
26 | #include <QApplication> | |
4707a23d | 27 | #include <QFontMetrics> |
84a0d458 JS |
28 | #include <QMouseEvent> |
29 | ||
2acdb232 | 30 | #include <pv/widgets/popup.hpp> |
84a0d458 JS |
31 | |
32 | using std::shared_ptr; | |
2496bf45 | 33 | using std::vector; |
84a0d458 JS |
34 | |
35 | namespace pv { | |
36 | namespace view { | |
37 | ||
4707a23d | 38 | const int CursorHeader::Padding = 20; |
4d95ef60 | 39 | const int CursorHeader::BaselineOffset = 5; |
4707a23d JS |
40 | |
41 | int CursorHeader::calculateTextHeight() | |
42 | { | |
43 | QFontMetrics fm(font()); | |
44 | return fm.boundingRect(0, 0, INT_MAX, INT_MAX, | |
45 | Qt::AlignLeft | Qt::AlignTop, "8").height(); | |
46 | } | |
84a0d458 JS |
47 | |
48 | CursorHeader::CursorHeader(View &parent) : | |
49 | MarginWidget(parent), | |
8dbbc7f0 JH |
50 | dragging_(false), |
51 | textHeight_(calculateTextHeight()) | |
84a0d458 JS |
52 | { |
53 | setMouseTracking(true); | |
54 | } | |
55 | ||
56 | QSize CursorHeader::sizeHint() const | |
57 | { | |
8dbbc7f0 | 58 | return QSize(0, textHeight_ + Padding + BaselineOffset); |
84a0d458 JS |
59 | } |
60 | ||
61 | void CursorHeader::clear_selection() | |
62 | { | |
2496bf45 JH |
63 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); |
64 | for (auto &i : items) | |
65 | i->select(false); | |
84a0d458 JS |
66 | update(); |
67 | } | |
68 | ||
69 | void CursorHeader::paintEvent(QPaintEvent*) | |
70 | { | |
71 | QPainter p(this); | |
72 | p.setRenderHint(QPainter::Antialiasing); | |
73 | ||
5c5ce757 JH |
74 | // The cursor labels are not drawn with the arrows exactly on the |
75 | // bottom line of the widget, because then the selection shadow | |
76 | // would be clipped away. | |
77 | const QRect r = rect().adjusted(0, 0, 0, -BaselineOffset); | |
78 | ||
9a377493 JH |
79 | // Draw the items |
80 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
81 | for (auto &m : items) | |
82 | m->paint_label(p, r); | |
84a0d458 JS |
83 | } |
84 | ||
85 | void CursorHeader::mouseMoveEvent(QMouseEvent *e) | |
86 | { | |
87 | if (!(e->buttons() & Qt::LeftButton)) | |
88 | return; | |
89 | ||
8dbbc7f0 | 90 | if ((e->pos() - mouse_down_point_).manhattanLength() < |
84a0d458 JS |
91 | QApplication::startDragDistance()) |
92 | return; | |
93 | ||
e95fb8e9 | 94 | // Do the drag |
8dbbc7f0 | 95 | dragging_ = true; |
84a0d458 | 96 | |
e95fb8e9 JH |
97 | const int delta = e->pos().x() - mouse_down_point_.x(); |
98 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
99 | for (auto &i : items) | |
100 | if (i->dragging()) | |
101 | i->set_time(view_.offset() + | |
102 | (i->drag_point().x() + delta) * view_.scale()); | |
84a0d458 JS |
103 | } |
104 | ||
105 | void CursorHeader::mousePressEvent(QMouseEvent *e) | |
106 | { | |
107 | if (e->buttons() & Qt::LeftButton) { | |
8dbbc7f0 | 108 | mouse_down_point_ = e->pos(); |
84a0d458 | 109 | |
e95fb8e9 | 110 | mouse_down_item_.reset(); |
84a0d458 JS |
111 | |
112 | clear_selection(); | |
113 | ||
e95fb8e9 JH |
114 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); |
115 | for (auto &i : items) | |
116 | if (i && i->label_rect(rect()).contains(e->pos())) { | |
117 | mouse_down_item_ = i; | |
118 | break; | |
119 | } | |
84a0d458 | 120 | |
e95fb8e9 JH |
121 | if (mouse_down_item_) { |
122 | mouse_down_item_->select(); | |
123 | mouse_down_item_->drag(); | |
124 | } | |
84a0d458 JS |
125 | |
126 | selection_changed(); | |
127 | } | |
128 | } | |
129 | ||
130 | void CursorHeader::mouseReleaseEvent(QMouseEvent *) | |
131 | { | |
132 | using pv::widgets::Popup; | |
133 | ||
e95fb8e9 JH |
134 | if (!dragging_ && mouse_down_item_) { |
135 | Popup *const p = mouse_down_item_->create_popup(&view_); | |
faeb1a29 JH |
136 | if (p) { |
137 | const QPoint arrpos(mouse_down_item_->get_x(), | |
138 | height() - BaselineOffset); | |
139 | p->set_position(mapToGlobal(arrpos), Popup::Bottom); | |
140 | p->show(); | |
141 | } | |
e95fb8e9 | 142 | } |
84a0d458 | 143 | |
8dbbc7f0 | 144 | dragging_ = false; |
e95fb8e9 JH |
145 | mouse_down_item_.reset(); |
146 | ||
147 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
148 | for (auto &i : items) | |
149 | i->drag_release(); | |
84a0d458 JS |
150 | } |
151 | ||
152 | } // namespace view | |
153 | } // namespace pv |