]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * This file is part of the PulseView project. | |
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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <algorithm> | |
21 | #include <cassert> | |
22 | #include <cmath> | |
23 | #include <limits> | |
24 | ||
25 | #include "signal.hpp" | |
26 | #include "view.hpp" | |
27 | #include "viewitempaintparams.hpp" | |
28 | #include "viewport.hpp" | |
29 | ||
30 | #include <pv/session.hpp> | |
31 | ||
32 | #include <QMouseEvent> | |
33 | #include <QScreen> | |
34 | #include <QWindow> | |
35 | ||
36 | #include <QDebug> | |
37 | ||
38 | using std::abs; | |
39 | using std::back_inserter; | |
40 | using std::copy; | |
41 | using std::dynamic_pointer_cast; | |
42 | using std::none_of; // NOLINT. Used in assert()s. | |
43 | using std::shared_ptr; | |
44 | using std::stable_sort; | |
45 | using std::vector; | |
46 | ||
47 | namespace pv { | |
48 | namespace views { | |
49 | namespace trace { | |
50 | ||
51 | Viewport::Viewport(View &parent) : | |
52 | ViewWidget(parent), | |
53 | pinch_zoom_active_(false) | |
54 | { | |
55 | setAutoFillBackground(true); | |
56 | setBackgroundRole(QPalette::Base); | |
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); | |
68 | } | |
69 | ||
70 | shared_ptr<ViewItem> Viewport::get_mouse_over_item(const QPoint &pt) | |
71 | { | |
72 | const ViewItemPaintParams pp(rect(), view_.scale(), view_.offset()); | |
73 | const vector< shared_ptr<ViewItem> > items(this->items()); | |
74 | for (auto i = items.rbegin(); i != items.rend(); i++) | |
75 | if ((*i)->enabled() && (*i)->hit_box_rect(pp).contains(pt)) | |
76 | return *i; | |
77 | return nullptr; | |
78 | } | |
79 | ||
80 | void Viewport::item_hover(const shared_ptr<ViewItem> &item, QPoint pos) | |
81 | { | |
82 | if (item && item->is_draggable(pos)) | |
83 | setCursor(dynamic_pointer_cast<ViewItem>(item) ? | |
84 | Qt::SizeHorCursor : Qt::SizeVerCursor); | |
85 | else | |
86 | unsetCursor(); | |
87 | } | |
88 | ||
89 | void Viewport::drag() | |
90 | { | |
91 | drag_offset_ = view_.offset(); | |
92 | ||
93 | if (allow_vertical_dragging_) | |
94 | drag_v_offset_ = view_.owner_visual_v_offset(); | |
95 | } | |
96 | ||
97 | void Viewport::drag_by(const QPoint &delta) | |
98 | { | |
99 | if (drag_offset_ == boost::none) | |
100 | return; | |
101 | ||
102 | view_.set_scale_offset(view_.scale(), | |
103 | (*drag_offset_ - delta.x() * view_.scale())); | |
104 | ||
105 | if (allow_vertical_dragging_) | |
106 | view_.set_v_offset(-drag_v_offset_ - delta.y()); | |
107 | } | |
108 | ||
109 | void Viewport::drag_release() | |
110 | { | |
111 | drag_offset_ = boost::none; | |
112 | } | |
113 | ||
114 | vector< shared_ptr<ViewItem> > Viewport::items() | |
115 | { | |
116 | vector< shared_ptr<ViewItem> > items; | |
117 | const vector< shared_ptr<ViewItem> > view_items( | |
118 | view_.list_by_type<ViewItem>()); | |
119 | copy(view_items.begin(), view_items.end(), back_inserter(items)); | |
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 | ||
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 | } | |
133 | if (event->device()->type() == QTouchDevice::TouchPad) { | |
134 | return false; | |
135 | } | |
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)) { | |
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>(); | |
144 | pinch_zoom_active_ = true; | |
145 | } | |
146 | ||
147 | double w = touchPoint1.pos().x() - touchPoint0.pos().x(); | |
148 | if (abs(w) >= 1.0) { | |
149 | const double scale = | |
150 | fabs((pinch_offset1_ - pinch_offset0_) / w); | |
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 | |
161 | drag_release(); | |
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(); | |
166 | drag(); | |
167 | } | |
168 | } | |
169 | ||
170 | return true; | |
171 | } | |
172 | ||
173 | void Viewport::paintEvent(QPaintEvent*) | |
174 | { | |
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 | ||
181 | vector< shared_ptr<ViewItem> > row_items(view_.list_by_type<ViewItem>()); | |
182 | assert(none_of(row_items.begin(), row_items.end(), | |
183 | [](const shared_ptr<ViewItem> &r) { return !r; })); | |
184 | ||
185 | stable_sort(row_items.begin(), row_items.end(), | |
186 | [](const shared_ptr<ViewItem> &a, const shared_ptr<ViewItem> &b) { | |
187 | return a->drag_point(QRect()).y() < b->drag_point(QRect()).y(); }); | |
188 | ||
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 | ||
193 | QPainter p(this); | |
194 | ||
195 | // Disable antialiasing for high-DPI displays | |
196 | bool use_antialiasing = | |
197 | window()->windowHandle()->screen()->devicePixelRatio() < 2.0; | |
198 | p.setRenderHint(QPainter::Antialiasing, use_antialiasing); | |
199 | ||
200 | for (LayerPaintFunc *paint_func = layer_paint_funcs; | |
201 | *paint_func; paint_func++) { | |
202 | ViewItemPaintParams time_pp(rect(), view_.scale(), view_.offset()); | |
203 | for (const shared_ptr<TimeItem>& t : time_items) | |
204 | (t.get()->*(*paint_func))(p, time_pp); | |
205 | ||
206 | ViewItemPaintParams row_pp(rect(), view_.scale(), view_.offset()); | |
207 | for (const shared_ptr<ViewItem>& r : row_items) | |
208 | (r.get()->*(*paint_func))(p, row_pp); | |
209 | } | |
210 | ||
211 | p.end(); | |
212 | } | |
213 | ||
214 | void Viewport::mouseDoubleClickEvent(QMouseEvent *event) | |
215 | { | |
216 | assert(event); | |
217 | ||
218 | if (event->buttons() & Qt::LeftButton) | |
219 | view_.zoom(2.0, event->x()); | |
220 | else if (event->buttons() & Qt::RightButton) | |
221 | view_.zoom(-2.0, event->x()); | |
222 | } | |
223 | ||
224 | void Viewport::wheelEvent(QWheelEvent *event) | |
225 | { | |
226 | assert(event); | |
227 | ||
228 | if (event->orientation() == Qt::Vertical) { | |
229 | if (event->modifiers() & Qt::ControlModifier) { | |
230 | // Vertical scrolling with the control key pressed | |
231 | // is intrepretted as vertical scrolling | |
232 | view_.set_v_offset(-view_.owner_visual_v_offset() - | |
233 | (event->delta() * height()) / (8 * 120)); | |
234 | } else { | |
235 | // Vertical scrolling is interpreted as zooming in/out | |
236 | view_.zoom(event->delta() / 120.0, event->x()); | |
237 | } | |
238 | } else if (event->orientation() == Qt::Horizontal) { | |
239 | // Horizontal scrolling is interpreted as moving left/right | |
240 | view_.set_scale_offset(view_.scale(), | |
241 | event->delta() * view_.scale() + view_.offset()); | |
242 | } | |
243 | } | |
244 | ||
245 | void Viewport::on_setting_changed(const QString &key, const QVariant &value) | |
246 | { | |
247 | if (key == GlobalSettings::Key_View_AllowVerticalDragging) { | |
248 | GlobalSettings settings; | |
249 | allow_vertical_dragging_ = settings.value(GlobalSettings::Key_View_AllowVerticalDragging).toBool(); | |
250 | } | |
251 | } | |
252 | ||
253 | } // namespace trace | |
254 | } // namespace views | |
255 | } // namespace pv |