]>
Commit | Line | Data |
---|---|---|
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 | 21 | #include <cassert> |
61d64fe9 | 22 | #include <cmath> |
d2344534 | 23 | |
cdf7bea7 JH |
24 | #include "view.h" |
25 | #include "viewport.h" | |
6fa02541 | 26 | |
8d634081 | 27 | #include "signal.h" |
51e77110 | 28 | #include "../sigsession.h" |
e3f65ace | 29 | |
7cd5faf8 | 30 | #include <QMouseEvent> |
e9c41f8c | 31 | |
c8870d9e | 32 | using std::abs; |
819f4c25 JH |
33 | using std::max; |
34 | using std::min; | |
f9abf97e | 35 | using std::shared_ptr; |
819f4c25 | 36 | using std::vector; |
e3f65ace | 37 | |
cdf7bea7 JH |
38 | namespace pv { |
39 | namespace view { | |
e9c41f8c | 40 | |
cdf7bea7 | 41 | Viewport::Viewport(View &parent) : |
64b60583 | 42 | QWidget(&parent), |
300fc11e | 43 | _view(parent), |
4b4f1c0d MC |
44 | _mouse_down_valid(false), |
45 | _pinch_zoom_active(false) | |
6fa02541 | 46 | { |
4b4f1c0d MC |
47 | setAttribute(Qt::WA_AcceptTouchEvents, true); |
48 | ||
d7002724 | 49 | setMouseTracking(true); |
64b60583 JH |
50 | setAutoFillBackground(true); |
51 | setBackgroundRole(QPalette::Base); | |
07204819 | 52 | |
aca00b1e JH |
53 | connect(&_view.session(), SIGNAL(signals_changed()), |
54 | this, SLOT(on_signals_changed())); | |
55 | ||
07204819 JH |
56 | connect(&_view, SIGNAL(signals_moved()), |
57 | this, SLOT(on_signals_moved())); | |
9f46d905 JH |
58 | |
59 | // Trigger the initial event manually. The default device has signals | |
60 | // which were created before this object came into being | |
61 | on_signals_changed(); | |
d7002724 JH |
62 | } |
63 | ||
cdf7bea7 | 64 | int Viewport::get_total_height() const |
a429590b | 65 | { |
07204819 | 66 | int h = 0; |
38eeddea | 67 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); |
d9aecf1f | 68 | for (const shared_ptr<Trace> t : traces) { |
38eeddea JH |
69 | assert(t); |
70 | h = max(t->get_v_offset() + View::SignalHeight, h); | |
adb4b10c JH |
71 | } |
72 | ||
07204819 | 73 | return h; |
a429590b JH |
74 | } |
75 | ||
e314eca4 | 76 | void Viewport::paintEvent(QPaintEvent*) |
d7002724 | 77 | { |
38eeddea | 78 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); |
3e46726a | 79 | |
64b60583 | 80 | QPainter p(this); |
ce6e73a8 | 81 | p.setRenderHint(QPainter::Antialiasing); |
3e46726a | 82 | |
0ba172cf JH |
83 | if (_view.cursors_shown()) |
84 | _view.cursors().draw_viewport_background(p, rect()); | |
f76af637 | 85 | |
3e46726a | 86 | // Plot the signal |
d9aecf1f | 87 | for (const shared_ptr<Trace> t : traces) |
3e46726a | 88 | { |
38eeddea | 89 | assert(t); |
fe08b6e8 | 90 | t->paint_back(p, 0, width()); |
3e46726a JH |
91 | } |
92 | ||
d9aecf1f | 93 | for (const shared_ptr<Trace> t : traces) |
fe08b6e8 JH |
94 | t->paint_mid(p, 0, width()); |
95 | ||
d9aecf1f | 96 | for (const shared_ptr<Trace> t : traces) |
fe08b6e8 JH |
97 | t->paint_fore(p, 0, width()); |
98 | ||
0ba172cf JH |
99 | if (_view.cursors_shown()) |
100 | _view.cursors().draw_viewport_foreground(p, rect()); | |
f76af637 | 101 | |
64b60583 | 102 | p.end(); |
6fa02541 | 103 | } |
009e1503 | 104 | |
4b4f1c0d MC |
105 | bool Viewport::event(QEvent *event) |
106 | { | |
300fc11e | 107 | switch (event->type()) { |
4b4f1c0d MC |
108 | case QEvent::TouchBegin: |
109 | case QEvent::TouchUpdate: | |
110 | case QEvent::TouchEnd: | |
111 | if (touchEvent(static_cast<QTouchEvent *>(event))) | |
112 | return true; | |
113 | break; | |
114 | ||
115 | default: | |
116 | break; | |
117 | } | |
118 | ||
119 | return QWidget::event(event); | |
120 | } | |
121 | ||
cdf7bea7 | 122 | void Viewport::mousePressEvent(QMouseEvent *event) |
7cd5faf8 JH |
123 | { |
124 | assert(event); | |
1dd95c70 | 125 | |
300fc11e | 126 | if (event->button() == Qt::LeftButton) { |
4b4f1c0d MC |
127 | _mouse_down_point = event->pos(); |
128 | _mouse_down_offset = _view.offset(); | |
129 | _mouse_down_valid = true; | |
130 | } | |
131 | } | |
132 | ||
133 | void Viewport::mouseReleaseEvent(QMouseEvent *event) | |
134 | { | |
135 | assert(event); | |
136 | ||
137 | if (event->button() == Qt::LeftButton) | |
4b4f1c0d | 138 | _mouse_down_valid = false; |
7cd5faf8 JH |
139 | } |
140 | ||
cdf7bea7 | 141 | void Viewport::mouseMoveEvent(QMouseEvent *event) |
7cd5faf8 JH |
142 | { |
143 | assert(event); | |
1dd95c70 | 144 | |
300fc11e UH |
145 | if (event->buttons() & Qt::LeftButton) { |
146 | if (!_mouse_down_valid) { | |
4b4f1c0d MC |
147 | _mouse_down_point = event->pos(); |
148 | _mouse_down_offset = _view.offset(); | |
149 | _mouse_down_valid = true; | |
150 | } | |
151 | ||
adb4b10c JH |
152 | _view.set_scale_offset(_view.scale(), |
153 | _mouse_down_offset + | |
154 | (_mouse_down_point - event->pos()).x() * | |
155 | _view.scale()); | |
1dd95c70 | 156 | } |
7cd5faf8 JH |
157 | } |
158 | ||
903038a8 JH |
159 | void Viewport::mouseDoubleClickEvent(QMouseEvent *event) |
160 | { | |
161 | assert(event); | |
162 | ||
163 | if (event->buttons() & Qt::LeftButton) | |
164 | _view.zoom(2.0, event->x()); | |
165 | else if (event->buttons() & Qt::RightButton) | |
166 | _view.zoom(-2.0, event->x()); | |
167 | } | |
168 | ||
cdf7bea7 | 169 | void Viewport::wheelEvent(QWheelEvent *event) |
1dd95c70 JH |
170 | { |
171 | assert(event); | |
ffd5cd20 AG |
172 | |
173 | if (event->orientation() == Qt::Vertical) { | |
174 | // Vertical scrolling is interpreted as zooming in/out | |
175 | _view.zoom(event->delta() / 120, event->x()); | |
23840406 AG |
176 | } else if (event->orientation() == Qt::Horizontal) { |
177 | // Horizontal scrolling is interpreted as moving left/right | |
178 | _view.set_scale_offset(_view.scale(), | |
179 | event->delta() * _view.scale() | |
180 | + _view.offset()); | |
ffd5cd20 | 181 | } |
7cd5faf8 JH |
182 | } |
183 | ||
4b4f1c0d MC |
184 | bool Viewport::touchEvent(QTouchEvent *event) |
185 | { | |
186 | QList<QTouchEvent::TouchPoint> touchPoints = event->touchPoints(); | |
187 | ||
188 | if (touchPoints.count() != 2) { | |
189 | _pinch_zoom_active = false; | |
190 | return false; | |
191 | } | |
192 | ||
193 | const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first(); | |
194 | const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last(); | |
195 | ||
196 | if (!_pinch_zoom_active || | |
197 | (event->touchPointStates() & Qt::TouchPointPressed)) { | |
198 | _pinch_offset0 = _view.offset() + _view.scale() * touchPoint0.pos().x(); | |
199 | _pinch_offset1 = _view.offset() + _view.scale() * touchPoint1.pos().x(); | |
200 | _pinch_zoom_active = true; | |
201 | } | |
202 | ||
203 | double w = touchPoint1.pos().x() - touchPoint0.pos().x(); | |
204 | if (abs(w) >= 1.0) { | |
205 | double scale = (_pinch_offset1 - _pinch_offset0) / w; | |
206 | if (scale < 0) | |
207 | scale = -scale; | |
208 | double offset = _pinch_offset0 - touchPoint0.pos().x() * scale; | |
209 | if (scale > 0) | |
210 | _view.set_scale_offset(scale, offset); | |
211 | } | |
212 | ||
213 | if (event->touchPointStates() & Qt::TouchPointReleased) { | |
214 | _pinch_zoom_active = false; | |
215 | ||
216 | if (touchPoint0.state() & Qt::TouchPointReleased) { | |
217 | // Primary touch released | |
218 | _mouse_down_valid = false; | |
219 | } else { | |
220 | // Update the mouse down fields so that continued | |
221 | // dragging with the primary touch will work correctly | |
222 | _mouse_down_point = touchPoint0.pos().toPoint(); | |
223 | _mouse_down_offset = _view.offset(); | |
224 | _mouse_down_valid = true; | |
225 | } | |
226 | } | |
227 | ||
228 | return true; | |
229 | } | |
230 | ||
aca00b1e JH |
231 | void Viewport::on_signals_changed() |
232 | { | |
233 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
d9aecf1f | 234 | for (shared_ptr<Trace> t : traces) { |
aca00b1e JH |
235 | assert(t); |
236 | connect(t.get(), SIGNAL(visibility_changed()), | |
237 | this, SLOT(update())); | |
238 | } | |
239 | } | |
240 | ||
07204819 JH |
241 | void Viewport::on_signals_moved() |
242 | { | |
243 | update(); | |
244 | } | |
245 | ||
cdf7bea7 JH |
246 | } // namespace view |
247 | } // namespace pv |