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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 | |
efdec55a | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
6fa02541 JH |
18 | */ |
19 | ||
aca9aa83 | 20 | #include <algorithm> |
d2344534 | 21 | #include <cassert> |
61d64fe9 | 22 | #include <cmath> |
28290534 | 23 | #include <limits> |
d2344534 | 24 | |
2acdb232 JH |
25 | #include "signal.hpp" |
26 | #include "view.hpp" | |
5b5fa4da | 27 | #include "viewitempaintparams.hpp" |
2acdb232 | 28 | #include "viewport.hpp" |
6fa02541 | 29 | |
f65cd27b | 30 | #include <pv/session.hpp> |
e3f65ace | 31 | |
7cd5faf8 | 32 | #include <QMouseEvent> |
633e8ade RG |
33 | #include <QScreen> |
34 | #include <QWindow> | |
e9c41f8c | 35 | |
f4e57597 SA |
36 | #include <QDebug> |
37 | ||
c8870d9e | 38 | using std::abs; |
e9e4e5e7 JH |
39 | using std::back_inserter; |
40 | using std::copy; | |
e8b969a9 | 41 | using std::dynamic_pointer_cast; |
20f59e95 | 42 | using std::none_of; // NOLINT. Used in assert()s. |
f9abf97e | 43 | using std::shared_ptr; |
68b21a71 | 44 | using std::stable_sort; |
819f4c25 | 45 | using std::vector; |
e3f65ace | 46 | |
cdf7bea7 | 47 | namespace pv { |
f4e57597 | 48 | namespace views { |
1573bf16 | 49 | namespace trace { |
e9c41f8c | 50 | |
cdf7bea7 | 51 | Viewport::Viewport(View &parent) : |
40aca27e | 52 | ViewWidget(parent), |
8dbbc7f0 | 53 | pinch_zoom_active_(false) |
6fa02541 | 54 | { |
64b60583 JH |
55 | setAutoFillBackground(true); |
56 | setBackgroundRole(QPalette::Base); | |
e6c8d58b SA |
57 | |
58 | // Set up settings and event handlers | |
59 | GlobalSettings settings; | |
60 | allow_vertical_dragging_ = settings.value(GlobalSettings::Key_View_AllowVerticalDragging).toBool(); | |
61 | ||
62 | GlobalSettings::add_change_handler(this); | |
63 | } | |
64 | ||
65 | Viewport::~Viewport() | |
66 | { | |
67 | GlobalSettings::remove_change_handler(this); | |
d7002724 JH |
68 | } |
69 | ||
e9e4e5e7 JH |
70 | shared_ptr<ViewItem> Viewport::get_mouse_over_item(const QPoint &pt) |
71 | { | |
cbf0f87e | 72 | const ViewItemPaintParams pp(rect(), view_.scale(), view_.offset()); |
e9e4e5e7 JH |
73 | const vector< shared_ptr<ViewItem> > items(this->items()); |
74 | for (auto i = items.rbegin(); i != items.rend(); i++) | |
c063290a | 75 | if ((*i)->enabled() && (*i)->hit_box_rect(pp).contains(pt)) |
e9e4e5e7 JH |
76 | return *i; |
77 | return nullptr; | |
78 | } | |
79 | ||
119c5c23 | 80 | void Viewport::item_hover(const shared_ptr<ViewItem> &item, QPoint pos) |
e8b969a9 | 81 | { |
119c5c23 | 82 | if (item && item->is_draggable(pos)) |
af33d4cb | 83 | setCursor(dynamic_pointer_cast<ViewItem>(item) ? |
8b4ce4ae | 84 | Qt::SizeHorCursor : Qt::SizeVerCursor); |
e8b969a9 JH |
85 | else |
86 | unsetCursor(); | |
87 | } | |
88 | ||
28290534 JH |
89 | void Viewport::drag() |
90 | { | |
91 | drag_offset_ = view_.offset(); | |
e6c8d58b SA |
92 | |
93 | if (allow_vertical_dragging_) | |
94 | drag_v_offset_ = view_.owner_visual_v_offset(); | |
28290534 JH |
95 | } |
96 | ||
97 | void Viewport::drag_by(const QPoint &delta) | |
98 | { | |
60d9b99a | 99 | if (drag_offset_ == boost::none) |
28290534 JH |
100 | return; |
101 | ||
60d9b99a JS |
102 | view_.set_scale_offset(view_.scale(), |
103 | (*drag_offset_ - delta.x() * view_.scale())); | |
838d0522 | 104 | |
e6c8d58b SA |
105 | if (allow_vertical_dragging_) |
106 | view_.set_v_offset(-drag_v_offset_ - delta.y()); | |
28290534 JH |
107 | } |
108 | ||
109 | void Viewport::drag_release() | |
110 | { | |
60d9b99a | 111 | drag_offset_ = boost::none; |
28290534 JH |
112 | } |
113 | ||
e9e4e5e7 JH |
114 | vector< shared_ptr<ViewItem> > Viewport::items() |
115 | { | |
cc88566c | 116 | vector< shared_ptr<ViewItem> > items; |
6f925ba9 | 117 | const vector< shared_ptr<ViewItem> > view_items( |
e94f43c6 JH |
118 | view_.list_by_type<ViewItem>()); |
119 | copy(view_items.begin(), view_items.end(), back_inserter(items)); | |
e9e4e5e7 JH |
120 | const vector< shared_ptr<TimeItem> > time_items(view_.time_items()); |
121 | copy(time_items.begin(), time_items.end(), back_inserter(items)); | |
122 | return items; | |
123 | } | |
124 | ||
c9743553 JH |
125 | bool Viewport::touch_event(QTouchEvent *event) |
126 | { | |
127 | QList<QTouchEvent::TouchPoint> touchPoints = event->touchPoints(); | |
128 | ||
129 | if (touchPoints.count() != 2) { | |
130 | pinch_zoom_active_ = false; | |
131 | return false; | |
132 | } | |
1f5d683e SS |
133 | if (event->device()->type() == QTouchDevice::TouchPad) { |
134 | return false; | |
135 | } | |
c9743553 JH |
136 | |
137 | const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first(); | |
138 | const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last(); | |
139 | ||
140 | if (!pinch_zoom_active_ || | |
141 | (event->touchPointStates() & Qt::TouchPointPressed)) { | |
60d9b99a JS |
142 | pinch_offset0_ = (view_.offset() + view_.scale() * touchPoint0.pos().x()).convert_to<double>(); |
143 | pinch_offset1_ = (view_.offset() + view_.scale() * touchPoint1.pos().x()).convert_to<double>(); | |
c9743553 JH |
144 | pinch_zoom_active_ = true; |
145 | } | |
146 | ||
147 | double w = touchPoint1.pos().x() - touchPoint0.pos().x(); | |
148 | if (abs(w) >= 1.0) { | |
1c91f1a2 JH |
149 | const double scale = |
150 | fabs((pinch_offset1_ - pinch_offset0_) / w); | |
c9743553 JH |
151 | double offset = pinch_offset0_ - touchPoint0.pos().x() * scale; |
152 | if (scale > 0) | |
153 | view_.set_scale_offset(scale, offset); | |
154 | } | |
155 | ||
156 | if (event->touchPointStates() & Qt::TouchPointReleased) { | |
157 | pinch_zoom_active_ = false; | |
158 | ||
159 | if (touchPoint0.state() & Qt::TouchPointReleased) { | |
160 | // Primary touch released | |
28290534 | 161 | drag_release(); |
c9743553 JH |
162 | } else { |
163 | // Update the mouse down fields so that continued | |
164 | // dragging with the primary touch will work correctly | |
165 | mouse_down_point_ = touchPoint0.pos().toPoint(); | |
28290534 | 166 | drag(); |
c9743553 JH |
167 | } |
168 | } | |
169 | ||
170 | return true; | |
171 | } | |
172 | ||
e314eca4 | 173 | void Viewport::paintEvent(QPaintEvent*) |
d7002724 | 174 | { |
60938e04 JH |
175 | typedef void (ViewItem::*LayerPaintFunc)( |
176 | QPainter &p, ViewItemPaintParams &pp); | |
177 | LayerPaintFunc layer_paint_funcs[] = { | |
178 | &ViewItem::paint_back, &ViewItem::paint_mid, | |
179 | &ViewItem::paint_fore, nullptr}; | |
180 | ||
af33d4cb | 181 | vector< shared_ptr<ViewItem> > row_items(view_.list_by_type<ViewItem>()); |
e94f43c6 | 182 | assert(none_of(row_items.begin(), row_items.end(), |
af33d4cb | 183 | [](const shared_ptr<ViewItem> &r) { return !r; })); |
beb897c6 | 184 | |
e94f43c6 | 185 | stable_sort(row_items.begin(), row_items.end(), |
af33d4cb | 186 | [](const shared_ptr<ViewItem> &a, const shared_ptr<ViewItem> &b) { |
a3d5a7c7 | 187 | return a->drag_point(QRect()).y() < b->drag_point(QRect()).y(); }); |
3e46726a | 188 | |
beb897c6 JH |
189 | const vector< shared_ptr<TimeItem> > time_items(view_.time_items()); |
190 | assert(none_of(time_items.begin(), time_items.end(), | |
191 | [](const shared_ptr<TimeItem> &t) { return !t; })); | |
192 | ||
64b60583 | 193 | QPainter p(this); |
633e8ade | 194 | |
f0b99257 SA |
195 | // Disable antialiasing for high-DPI displays |
196 | bool use_antialiasing = | |
633e8ade | 197 | window()->windowHandle()->screen()->devicePixelRatio() < 2.0; |
f0b99257 | 198 | p.setRenderHint(QPainter::Antialiasing, use_antialiasing); |
3e46726a | 199 | |
60938e04 JH |
200 | for (LayerPaintFunc *paint_func = layer_paint_funcs; |
201 | *paint_func; paint_func++) { | |
202 | ViewItemPaintParams time_pp(rect(), view_.scale(), view_.offset()); | |
f4ab4b5c | 203 | for (const shared_ptr<TimeItem>& t : time_items) |
60938e04 | 204 | (t.get()->*(*paint_func))(p, time_pp); |
3e46726a | 205 | |
60938e04 | 206 | ViewItemPaintParams row_pp(rect(), view_.scale(), view_.offset()); |
af33d4cb | 207 | for (const shared_ptr<ViewItem>& r : row_items) |
60938e04 JH |
208 | (r.get()->*(*paint_func))(p, row_pp); |
209 | } | |
f76af637 | 210 | |
64b60583 | 211 | p.end(); |
6fa02541 | 212 | } |
009e1503 | 213 | |
903038a8 JH |
214 | void Viewport::mouseDoubleClickEvent(QMouseEvent *event) |
215 | { | |
216 | assert(event); | |
217 | ||
218 | if (event->buttons() & Qt::LeftButton) | |
8dbbc7f0 | 219 | view_.zoom(2.0, event->x()); |
903038a8 | 220 | else if (event->buttons() & Qt::RightButton) |
8dbbc7f0 | 221 | view_.zoom(-2.0, event->x()); |
903038a8 JH |
222 | } |
223 | ||
d9ea9628 | 224 | void Viewport::wheelEvent(QWheelEvent *event) |
1dd95c70 | 225 | { |
d9ea9628 | 226 | assert(event); |
208c6fc3 | 227 | |
d9ea9628 UH |
228 | if (event->orientation() == Qt::Vertical) { |
229 | if (event->modifiers() & Qt::ControlModifier) { | |
208c6fc3 JH |
230 | // Vertical scrolling with the control key pressed |
231 | // is intrepretted as vertical scrolling | |
232 | view_.set_v_offset(-view_.owner_visual_v_offset() - | |
d9ea9628 | 233 | (event->delta() * height()) / (8 * 120)); |
208c6fc3 JH |
234 | } else { |
235 | // Vertical scrolling is interpreted as zooming in/out | |
3592f405 | 236 | view_.zoom(event->delta() / 120.0, event->x()); |
208c6fc3 | 237 | } |
d9ea9628 | 238 | } else if (event->orientation() == Qt::Horizontal) { |
23840406 | 239 | // Horizontal scrolling is interpreted as moving left/right |
8dbbc7f0 | 240 | view_.set_scale_offset(view_.scale(), |
d9ea9628 | 241 | event->delta() * view_.scale() + view_.offset()); |
ffd5cd20 | 242 | } |
7cd5faf8 JH |
243 | } |
244 | ||
e6c8d58b SA |
245 | void Viewport::on_setting_changed(const QString &key, const QVariant &value) |
246 | { | |
66a43b4f SA |
247 | if (key == GlobalSettings::Key_View_AllowVerticalDragging) |
248 | allow_vertical_dragging_ = value.toBool(); | |
e6c8d58b SA |
249 | } |
250 | ||
1573bf16 | 251 | } // namespace trace |
f4e57597 | 252 | } // namespace views |
cdf7bea7 | 253 | } // namespace pv |