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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 | 21 | #include <cassert> |
61d64fe9 | 22 | #include <cmath> |
68b21a71 | 23 | #include <algorithm> |
d2344534 | 24 | |
cdf7bea7 JH |
25 | #include "view.h" |
26 | #include "viewport.h" | |
6fa02541 | 27 | |
8d634081 | 28 | #include "signal.h" |
51e77110 | 29 | #include "../sigsession.h" |
e3f65ace | 30 | |
7cd5faf8 | 31 | #include <QMouseEvent> |
e9c41f8c | 32 | |
c8870d9e | 33 | using std::abs; |
819f4c25 JH |
34 | using std::max; |
35 | using std::min; | |
f9abf97e | 36 | using std::shared_ptr; |
68b21a71 | 37 | using std::stable_sort; |
819f4c25 | 38 | using std::vector; |
e3f65ace | 39 | |
cdf7bea7 JH |
40 | namespace pv { |
41 | namespace view { | |
e9c41f8c | 42 | |
cdf7bea7 | 43 | Viewport::Viewport(View &parent) : |
64b60583 | 44 | QWidget(&parent), |
300fc11e | 45 | _view(parent), |
4b4f1c0d MC |
46 | _mouse_down_valid(false), |
47 | _pinch_zoom_active(false) | |
6fa02541 | 48 | { |
4b4f1c0d MC |
49 | setAttribute(Qt::WA_AcceptTouchEvents, true); |
50 | ||
d7002724 | 51 | setMouseTracking(true); |
64b60583 JH |
52 | setAutoFillBackground(true); |
53 | setBackgroundRole(QPalette::Base); | |
07204819 JH |
54 | |
55 | connect(&_view, SIGNAL(signals_moved()), | |
56 | this, SLOT(on_signals_moved())); | |
d7002724 JH |
57 | } |
58 | ||
cdf7bea7 | 59 | int Viewport::get_total_height() const |
a429590b | 60 | { |
07204819 | 61 | int h = 0; |
aa59d5c2 JH |
62 | for (auto &i : _view) |
63 | h = max(i->v_offset() + View::SignalHeight, h); | |
07204819 | 64 | return h; |
a429590b JH |
65 | } |
66 | ||
14009012 JH |
67 | void Viewport::signals_updated() |
68 | { | |
69 | for (shared_ptr<RowItem> r : _view) { | |
70 | assert(r); | |
71 | connect(r.get(), SIGNAL(appearance_changed()), | |
72 | this, SLOT(update())); | |
73 | } | |
74 | } | |
75 | ||
e314eca4 | 76 | void Viewport::paintEvent(QPaintEvent*) |
d7002724 | 77 | { |
aa59d5c2 | 78 | vector< shared_ptr<RowItem> > row_items(_view.begin(), _view.end()); |
68b21a71 JH |
79 | stable_sort(row_items.begin(), row_items.end(), |
80 | [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) { | |
81 | return a->v_offset() < b->v_offset(); }); | |
3e46726a | 82 | |
64b60583 | 83 | QPainter p(this); |
ce6e73a8 | 84 | p.setRenderHint(QPainter::Antialiasing); |
3e46726a | 85 | |
0ba172cf JH |
86 | if (_view.cursors_shown()) |
87 | _view.cursors().draw_viewport_background(p, rect()); | |
f76af637 | 88 | |
3e46726a | 89 | // Plot the signal |
eae6e30a | 90 | for (const shared_ptr<RowItem> r : row_items) |
3e46726a | 91 | { |
eae6e30a JH |
92 | assert(r); |
93 | r->paint_back(p, 0, width()); | |
3e46726a JH |
94 | } |
95 | ||
eae6e30a JH |
96 | for (const shared_ptr<RowItem> r : row_items) |
97 | r->paint_mid(p, 0, width()); | |
fe08b6e8 | 98 | |
eae6e30a JH |
99 | for (const shared_ptr<RowItem> r : row_items) |
100 | r->paint_fore(p, 0, width()); | |
fe08b6e8 | 101 | |
0ba172cf JH |
102 | if (_view.cursors_shown()) |
103 | _view.cursors().draw_viewport_foreground(p, rect()); | |
f76af637 | 104 | |
64b60583 | 105 | p.end(); |
6fa02541 | 106 | } |
009e1503 | 107 | |
4b4f1c0d MC |
108 | bool Viewport::event(QEvent *event) |
109 | { | |
300fc11e | 110 | switch (event->type()) { |
4b4f1c0d MC |
111 | case QEvent::TouchBegin: |
112 | case QEvent::TouchUpdate: | |
113 | case QEvent::TouchEnd: | |
114 | if (touchEvent(static_cast<QTouchEvent *>(event))) | |
115 | return true; | |
116 | break; | |
117 | ||
118 | default: | |
119 | break; | |
120 | } | |
121 | ||
122 | return QWidget::event(event); | |
123 | } | |
124 | ||
cdf7bea7 | 125 | void Viewport::mousePressEvent(QMouseEvent *event) |
7cd5faf8 JH |
126 | { |
127 | assert(event); | |
1dd95c70 | 128 | |
300fc11e | 129 | if (event->button() == Qt::LeftButton) { |
4b4f1c0d MC |
130 | _mouse_down_point = event->pos(); |
131 | _mouse_down_offset = _view.offset(); | |
132 | _mouse_down_valid = true; | |
133 | } | |
134 | } | |
135 | ||
136 | void Viewport::mouseReleaseEvent(QMouseEvent *event) | |
137 | { | |
138 | assert(event); | |
139 | ||
140 | if (event->button() == Qt::LeftButton) | |
4b4f1c0d | 141 | _mouse_down_valid = false; |
7cd5faf8 JH |
142 | } |
143 | ||
cdf7bea7 | 144 | void Viewport::mouseMoveEvent(QMouseEvent *event) |
7cd5faf8 JH |
145 | { |
146 | assert(event); | |
1dd95c70 | 147 | |
300fc11e UH |
148 | if (event->buttons() & Qt::LeftButton) { |
149 | if (!_mouse_down_valid) { | |
4b4f1c0d MC |
150 | _mouse_down_point = event->pos(); |
151 | _mouse_down_offset = _view.offset(); | |
152 | _mouse_down_valid = true; | |
153 | } | |
154 | ||
adb4b10c JH |
155 | _view.set_scale_offset(_view.scale(), |
156 | _mouse_down_offset + | |
157 | (_mouse_down_point - event->pos()).x() * | |
158 | _view.scale()); | |
1dd95c70 | 159 | } |
7cd5faf8 JH |
160 | } |
161 | ||
903038a8 JH |
162 | void Viewport::mouseDoubleClickEvent(QMouseEvent *event) |
163 | { | |
164 | assert(event); | |
165 | ||
166 | if (event->buttons() & Qt::LeftButton) | |
167 | _view.zoom(2.0, event->x()); | |
168 | else if (event->buttons() & Qt::RightButton) | |
169 | _view.zoom(-2.0, event->x()); | |
170 | } | |
171 | ||
cdf7bea7 | 172 | void Viewport::wheelEvent(QWheelEvent *event) |
1dd95c70 JH |
173 | { |
174 | assert(event); | |
ffd5cd20 AG |
175 | |
176 | if (event->orientation() == Qt::Vertical) { | |
177 | // Vertical scrolling is interpreted as zooming in/out | |
178 | _view.zoom(event->delta() / 120, event->x()); | |
23840406 AG |
179 | } else if (event->orientation() == Qt::Horizontal) { |
180 | // Horizontal scrolling is interpreted as moving left/right | |
181 | _view.set_scale_offset(_view.scale(), | |
182 | event->delta() * _view.scale() | |
183 | + _view.offset()); | |
ffd5cd20 | 184 | } |
7cd5faf8 JH |
185 | } |
186 | ||
4b4f1c0d MC |
187 | bool Viewport::touchEvent(QTouchEvent *event) |
188 | { | |
189 | QList<QTouchEvent::TouchPoint> touchPoints = event->touchPoints(); | |
190 | ||
191 | if (touchPoints.count() != 2) { | |
192 | _pinch_zoom_active = false; | |
193 | return false; | |
194 | } | |
195 | ||
196 | const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first(); | |
197 | const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last(); | |
198 | ||
199 | if (!_pinch_zoom_active || | |
200 | (event->touchPointStates() & Qt::TouchPointPressed)) { | |
201 | _pinch_offset0 = _view.offset() + _view.scale() * touchPoint0.pos().x(); | |
202 | _pinch_offset1 = _view.offset() + _view.scale() * touchPoint1.pos().x(); | |
203 | _pinch_zoom_active = true; | |
204 | } | |
205 | ||
206 | double w = touchPoint1.pos().x() - touchPoint0.pos().x(); | |
207 | if (abs(w) >= 1.0) { | |
208 | double scale = (_pinch_offset1 - _pinch_offset0) / w; | |
209 | if (scale < 0) | |
210 | scale = -scale; | |
211 | double offset = _pinch_offset0 - touchPoint0.pos().x() * scale; | |
212 | if (scale > 0) | |
213 | _view.set_scale_offset(scale, offset); | |
214 | } | |
215 | ||
216 | if (event->touchPointStates() & Qt::TouchPointReleased) { | |
217 | _pinch_zoom_active = false; | |
218 | ||
219 | if (touchPoint0.state() & Qt::TouchPointReleased) { | |
220 | // Primary touch released | |
221 | _mouse_down_valid = false; | |
222 | } else { | |
223 | // Update the mouse down fields so that continued | |
224 | // dragging with the primary touch will work correctly | |
225 | _mouse_down_point = touchPoint0.pos().toPoint(); | |
226 | _mouse_down_offset = _view.offset(); | |
227 | _mouse_down_valid = true; | |
228 | } | |
229 | } | |
230 | ||
231 | return true; | |
232 | } | |
233 | ||
07204819 JH |
234 | void Viewport::on_signals_moved() |
235 | { | |
236 | update(); | |
237 | } | |
238 | ||
cdf7bea7 JH |
239 | } // namespace view |
240 | } // namespace pv |