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6fa02541 | 1 | /* |
b3f22de0 | 2 | * This file is part of the PulseView project. |
6fa02541 JH |
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 | ||
d2344534 JH |
21 | #include <cassert> |
22 | ||
cdf7bea7 JH |
23 | #include "view.h" |
24 | #include "viewport.h" | |
6fa02541 | 25 | |
8d634081 | 26 | #include "signal.h" |
51e77110 | 27 | #include "../sigsession.h" |
e3f65ace | 28 | |
7cd5faf8 | 29 | #include <QMouseEvent> |
e9c41f8c | 30 | |
819f4c25 JH |
31 | using std::max; |
32 | using std::min; | |
f9abf97e | 33 | using std::shared_ptr; |
819f4c25 | 34 | using std::vector; |
e3f65ace | 35 | |
cdf7bea7 JH |
36 | namespace pv { |
37 | namespace view { | |
e9c41f8c | 38 | |
cdf7bea7 | 39 | Viewport::Viewport(View &parent) : |
64b60583 | 40 | QWidget(&parent), |
adb4b10c | 41 | _view(parent) |
6fa02541 | 42 | { |
d7002724 | 43 | setMouseTracking(true); |
64b60583 JH |
44 | setAutoFillBackground(true); |
45 | setBackgroundRole(QPalette::Base); | |
07204819 | 46 | |
aca00b1e JH |
47 | connect(&_view.session(), SIGNAL(signals_changed()), |
48 | this, SLOT(on_signals_changed())); | |
49 | ||
07204819 JH |
50 | connect(&_view, SIGNAL(signals_moved()), |
51 | this, SLOT(on_signals_moved())); | |
9f46d905 JH |
52 | |
53 | // Trigger the initial event manually. The default device has signals | |
54 | // which were created before this object came into being | |
55 | on_signals_changed(); | |
d7002724 JH |
56 | } |
57 | ||
cdf7bea7 | 58 | int Viewport::get_total_height() const |
a429590b | 59 | { |
07204819 | 60 | int h = 0; |
38eeddea | 61 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); |
d9aecf1f | 62 | for (const shared_ptr<Trace> t : traces) { |
38eeddea JH |
63 | assert(t); |
64 | h = max(t->get_v_offset() + View::SignalHeight, h); | |
adb4b10c JH |
65 | } |
66 | ||
07204819 | 67 | return h; |
a429590b JH |
68 | } |
69 | ||
e314eca4 | 70 | void Viewport::paintEvent(QPaintEvent*) |
d7002724 | 71 | { |
38eeddea | 72 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); |
3e46726a | 73 | |
64b60583 | 74 | QPainter p(this); |
ce6e73a8 | 75 | p.setRenderHint(QPainter::Antialiasing); |
3e46726a | 76 | |
0ba172cf JH |
77 | if (_view.cursors_shown()) |
78 | _view.cursors().draw_viewport_background(p, rect()); | |
f76af637 | 79 | |
3e46726a | 80 | // Plot the signal |
d9aecf1f | 81 | for (const shared_ptr<Trace> t : traces) |
3e46726a | 82 | { |
38eeddea | 83 | assert(t); |
fe08b6e8 | 84 | t->paint_back(p, 0, width()); |
3e46726a JH |
85 | } |
86 | ||
d9aecf1f | 87 | for (const shared_ptr<Trace> t : traces) |
fe08b6e8 JH |
88 | t->paint_mid(p, 0, width()); |
89 | ||
d9aecf1f | 90 | for (const shared_ptr<Trace> t : traces) |
fe08b6e8 JH |
91 | t->paint_fore(p, 0, width()); |
92 | ||
0ba172cf JH |
93 | if (_view.cursors_shown()) |
94 | _view.cursors().draw_viewport_foreground(p, rect()); | |
f76af637 | 95 | |
64b60583 | 96 | p.end(); |
6fa02541 | 97 | } |
009e1503 | 98 | |
cdf7bea7 | 99 | void Viewport::mousePressEvent(QMouseEvent *event) |
7cd5faf8 JH |
100 | { |
101 | assert(event); | |
1dd95c70 JH |
102 | |
103 | _mouse_down_point = event->pos(); | |
adb4b10c | 104 | _mouse_down_offset = _view.offset(); |
7cd5faf8 JH |
105 | } |
106 | ||
cdf7bea7 | 107 | void Viewport::mouseMoveEvent(QMouseEvent *event) |
7cd5faf8 JH |
108 | { |
109 | assert(event); | |
1dd95c70 | 110 | |
333d5bbc | 111 | if (event->buttons() & Qt::LeftButton) |
1dd95c70 | 112 | { |
adb4b10c JH |
113 | _view.set_scale_offset(_view.scale(), |
114 | _mouse_down_offset + | |
115 | (_mouse_down_point - event->pos()).x() * | |
116 | _view.scale()); | |
1dd95c70 | 117 | } |
7cd5faf8 JH |
118 | } |
119 | ||
903038a8 JH |
120 | void Viewport::mouseDoubleClickEvent(QMouseEvent *event) |
121 | { | |
122 | assert(event); | |
123 | ||
124 | if (event->buttons() & Qt::LeftButton) | |
125 | _view.zoom(2.0, event->x()); | |
126 | else if (event->buttons() & Qt::RightButton) | |
127 | _view.zoom(-2.0, event->x()); | |
128 | } | |
129 | ||
cdf7bea7 | 130 | void Viewport::wheelEvent(QWheelEvent *event) |
1dd95c70 JH |
131 | { |
132 | assert(event); | |
ffd5cd20 AG |
133 | |
134 | if (event->orientation() == Qt::Vertical) { | |
135 | // Vertical scrolling is interpreted as zooming in/out | |
136 | _view.zoom(event->delta() / 120, event->x()); | |
23840406 AG |
137 | } else if (event->orientation() == Qt::Horizontal) { |
138 | // Horizontal scrolling is interpreted as moving left/right | |
139 | _view.set_scale_offset(_view.scale(), | |
140 | event->delta() * _view.scale() | |
141 | + _view.offset()); | |
ffd5cd20 | 142 | } |
7cd5faf8 JH |
143 | } |
144 | ||
aca00b1e JH |
145 | void Viewport::on_signals_changed() |
146 | { | |
147 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
d9aecf1f | 148 | for (shared_ptr<Trace> t : traces) { |
aca00b1e JH |
149 | assert(t); |
150 | connect(t.get(), SIGNAL(visibility_changed()), | |
151 | this, SLOT(update())); | |
152 | } | |
153 | } | |
154 | ||
07204819 JH |
155 | void Viewport::on_signals_moved() |
156 | { | |
157 | update(); | |
158 | } | |
159 | ||
cdf7bea7 JH |
160 | } // namespace view |
161 | } // namespace pv |