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Commit | Line | Data |
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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 | |
2acdb232 JH |
25 | #include "signal.hpp" |
26 | #include "view.hpp" | |
27 | #include "viewport.hpp" | |
6fa02541 | 28 | |
2acdb232 | 29 | #include <pv/sigsession.hpp> |
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), |
8dbbc7f0 JH |
45 | view_(parent), |
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 | 54 | |
8dbbc7f0 | 55 | connect(&view_, SIGNAL(signals_moved()), |
07204819 | 56 | this, SLOT(on_signals_moved())); |
d7002724 JH |
57 | } |
58 | ||
e314eca4 | 59 | void Viewport::paintEvent(QPaintEvent*) |
d7002724 | 60 | { |
8dbbc7f0 | 61 | vector< shared_ptr<RowItem> > row_items(view_.begin(), view_.end()); |
68b21a71 JH |
62 | stable_sort(row_items.begin(), row_items.end(), |
63 | [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) { | |
be9e7b4b | 64 | return a->visual_v_offset() < b->visual_v_offset(); }); |
3e46726a | 65 | |
64b60583 | 66 | QPainter p(this); |
ce6e73a8 | 67 | p.setRenderHint(QPainter::Antialiasing); |
3e46726a | 68 | |
8dbbc7f0 JH |
69 | if (view_.cursors_shown()) |
70 | view_.cursors().draw_viewport_background(p, rect()); | |
f76af637 | 71 | |
3e46726a | 72 | // Plot the signal |
eae6e30a | 73 | for (const shared_ptr<RowItem> r : row_items) |
3e46726a | 74 | { |
eae6e30a JH |
75 | assert(r); |
76 | r->paint_back(p, 0, width()); | |
3e46726a JH |
77 | } |
78 | ||
eae6e30a JH |
79 | for (const shared_ptr<RowItem> r : row_items) |
80 | r->paint_mid(p, 0, width()); | |
fe08b6e8 | 81 | |
eae6e30a JH |
82 | for (const shared_ptr<RowItem> r : row_items) |
83 | r->paint_fore(p, 0, width()); | |
fe08b6e8 | 84 | |
8dbbc7f0 JH |
85 | if (view_.cursors_shown()) |
86 | view_.cursors().draw_viewport_foreground(p, rect()); | |
f76af637 | 87 | |
64b60583 | 88 | p.end(); |
6fa02541 | 89 | } |
009e1503 | 90 | |
4b4f1c0d MC |
91 | bool Viewport::event(QEvent *event) |
92 | { | |
300fc11e | 93 | switch (event->type()) { |
4b4f1c0d MC |
94 | case QEvent::TouchBegin: |
95 | case QEvent::TouchUpdate: | |
96 | case QEvent::TouchEnd: | |
97 | if (touchEvent(static_cast<QTouchEvent *>(event))) | |
98 | return true; | |
99 | break; | |
100 | ||
101 | default: | |
102 | break; | |
103 | } | |
104 | ||
105 | return QWidget::event(event); | |
106 | } | |
107 | ||
cdf7bea7 | 108 | void Viewport::mousePressEvent(QMouseEvent *event) |
7cd5faf8 JH |
109 | { |
110 | assert(event); | |
1dd95c70 | 111 | |
300fc11e | 112 | if (event->button() == Qt::LeftButton) { |
8dbbc7f0 JH |
113 | mouse_down_point_ = event->pos(); |
114 | mouse_down_offset_ = view_.offset(); | |
115 | mouse_down_valid_ = true; | |
4b4f1c0d MC |
116 | } |
117 | } | |
118 | ||
119 | void Viewport::mouseReleaseEvent(QMouseEvent *event) | |
120 | { | |
121 | assert(event); | |
122 | ||
123 | if (event->button() == Qt::LeftButton) | |
8dbbc7f0 | 124 | mouse_down_valid_ = false; |
7cd5faf8 JH |
125 | } |
126 | ||
cdf7bea7 | 127 | void Viewport::mouseMoveEvent(QMouseEvent *event) |
7cd5faf8 JH |
128 | { |
129 | assert(event); | |
1dd95c70 | 130 | |
300fc11e | 131 | if (event->buttons() & Qt::LeftButton) { |
8dbbc7f0 JH |
132 | if (!mouse_down_valid_) { |
133 | mouse_down_point_ = event->pos(); | |
134 | mouse_down_offset_ = view_.offset(); | |
135 | mouse_down_valid_ = true; | |
4b4f1c0d MC |
136 | } |
137 | ||
8dbbc7f0 JH |
138 | view_.set_scale_offset(view_.scale(), |
139 | mouse_down_offset_ + | |
140 | (mouse_down_point_ - event->pos()).x() * | |
141 | view_.scale()); | |
1dd95c70 | 142 | } |
7cd5faf8 JH |
143 | } |
144 | ||
903038a8 JH |
145 | void Viewport::mouseDoubleClickEvent(QMouseEvent *event) |
146 | { | |
147 | assert(event); | |
148 | ||
149 | if (event->buttons() & Qt::LeftButton) | |
8dbbc7f0 | 150 | view_.zoom(2.0, event->x()); |
903038a8 | 151 | else if (event->buttons() & Qt::RightButton) |
8dbbc7f0 | 152 | view_.zoom(-2.0, event->x()); |
903038a8 JH |
153 | } |
154 | ||
cdf7bea7 | 155 | void Viewport::wheelEvent(QWheelEvent *event) |
1dd95c70 JH |
156 | { |
157 | assert(event); | |
ffd5cd20 AG |
158 | |
159 | if (event->orientation() == Qt::Vertical) { | |
160 | // Vertical scrolling is interpreted as zooming in/out | |
8dbbc7f0 | 161 | view_.zoom(event->delta() / 120, event->x()); |
23840406 AG |
162 | } else if (event->orientation() == Qt::Horizontal) { |
163 | // Horizontal scrolling is interpreted as moving left/right | |
8dbbc7f0 JH |
164 | view_.set_scale_offset(view_.scale(), |
165 | event->delta() * view_.scale() | |
166 | + view_.offset()); | |
ffd5cd20 | 167 | } |
7cd5faf8 JH |
168 | } |
169 | ||
4b4f1c0d MC |
170 | bool Viewport::touchEvent(QTouchEvent *event) |
171 | { | |
172 | QList<QTouchEvent::TouchPoint> touchPoints = event->touchPoints(); | |
173 | ||
174 | if (touchPoints.count() != 2) { | |
8dbbc7f0 | 175 | pinch_zoom_active_ = false; |
4b4f1c0d MC |
176 | return false; |
177 | } | |
178 | ||
179 | const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first(); | |
180 | const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last(); | |
181 | ||
8dbbc7f0 | 182 | if (!pinch_zoom_active_ || |
4b4f1c0d | 183 | (event->touchPointStates() & Qt::TouchPointPressed)) { |
8dbbc7f0 JH |
184 | pinch_offset0_ = view_.offset() + view_.scale() * touchPoint0.pos().x(); |
185 | pinch_offset1_ = view_.offset() + view_.scale() * touchPoint1.pos().x(); | |
186 | pinch_zoom_active_ = true; | |
4b4f1c0d MC |
187 | } |
188 | ||
189 | double w = touchPoint1.pos().x() - touchPoint0.pos().x(); | |
190 | if (abs(w) >= 1.0) { | |
8dbbc7f0 | 191 | double scale = (pinch_offset1_ - pinch_offset0_) / w; |
4b4f1c0d MC |
192 | if (scale < 0) |
193 | scale = -scale; | |
8dbbc7f0 | 194 | double offset = pinch_offset0_ - touchPoint0.pos().x() * scale; |
4b4f1c0d | 195 | if (scale > 0) |
8dbbc7f0 | 196 | view_.set_scale_offset(scale, offset); |
4b4f1c0d MC |
197 | } |
198 | ||
199 | if (event->touchPointStates() & Qt::TouchPointReleased) { | |
8dbbc7f0 | 200 | pinch_zoom_active_ = false; |
4b4f1c0d MC |
201 | |
202 | if (touchPoint0.state() & Qt::TouchPointReleased) { | |
203 | // Primary touch released | |
8dbbc7f0 | 204 | mouse_down_valid_ = false; |
4b4f1c0d MC |
205 | } else { |
206 | // Update the mouse down fields so that continued | |
207 | // dragging with the primary touch will work correctly | |
8dbbc7f0 JH |
208 | mouse_down_point_ = touchPoint0.pos().toPoint(); |
209 | mouse_down_offset_ = view_.offset(); | |
210 | mouse_down_valid_ = true; | |
4b4f1c0d MC |
211 | } |
212 | } | |
213 | ||
214 | return true; | |
215 | } | |
216 | ||
07204819 JH |
217 | void Viewport::on_signals_moved() |
218 | { | |
219 | update(); | |
220 | } | |
221 | ||
cdf7bea7 JH |
222 | } // namespace view |
223 | } // namespace pv |