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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> |
28290534 | 24 | #include <limits> |
d2344534 | 25 | |
2acdb232 JH |
26 | #include "signal.hpp" |
27 | #include "view.hpp" | |
5b5fa4da | 28 | #include "viewitempaintparams.hpp" |
2acdb232 | 29 | #include "viewport.hpp" |
6fa02541 | 30 | |
f65cd27b | 31 | #include <pv/session.hpp> |
e3f65ace | 32 | |
7cd5faf8 | 33 | #include <QMouseEvent> |
e9c41f8c | 34 | |
c8870d9e | 35 | using std::abs; |
e9e4e5e7 JH |
36 | using std::back_inserter; |
37 | using std::copy; | |
e8b969a9 | 38 | using std::dynamic_pointer_cast; |
819f4c25 JH |
39 | using std::max; |
40 | using std::min; | |
beb897c6 | 41 | using std::none_of; |
28290534 | 42 | using std::numeric_limits; |
f9abf97e | 43 | using std::shared_ptr; |
68b21a71 | 44 | using std::stable_sort; |
819f4c25 | 45 | using std::vector; |
e3f65ace | 46 | |
cdf7bea7 JH |
47 | namespace pv { |
48 | namespace view { | |
e9c41f8c | 49 | |
cdf7bea7 | 50 | Viewport::Viewport(View &parent) : |
40aca27e | 51 | ViewWidget(parent), |
8dbbc7f0 | 52 | pinch_zoom_active_(false) |
6fa02541 | 53 | { |
64b60583 JH |
54 | setAutoFillBackground(true); |
55 | setBackgroundRole(QPalette::Base); | |
d7002724 JH |
56 | } |
57 | ||
e9e4e5e7 JH |
58 | shared_ptr<ViewItem> Viewport::get_mouse_over_item(const QPoint &pt) |
59 | { | |
cbf0f87e | 60 | const ViewItemPaintParams pp(rect(), view_.scale(), view_.offset()); |
e9e4e5e7 JH |
61 | const vector< shared_ptr<ViewItem> > items(this->items()); |
62 | for (auto i = items.rbegin(); i != items.rend(); i++) | |
63 | if ((*i)->enabled() && | |
cbf0f87e | 64 | (*i)->hit_box_rect(pp).contains(pt)) |
e9e4e5e7 JH |
65 | return *i; |
66 | return nullptr; | |
67 | } | |
68 | ||
e8b969a9 JH |
69 | void Viewport::item_hover(const shared_ptr<ViewItem> &item) |
70 | { | |
d75c5d12 | 71 | if (item && item->is_draggable()) |
e8b969a9 JH |
72 | setCursor(dynamic_pointer_cast<RowItem>(item) ? |
73 | Qt::SizeVerCursor : Qt::SizeHorCursor); | |
74 | else | |
75 | unsetCursor(); | |
76 | } | |
77 | ||
28290534 JH |
78 | void Viewport::drag() |
79 | { | |
80 | drag_offset_ = view_.offset(); | |
838d0522 | 81 | drag_v_offset_ = view_.owner_visual_v_offset(); |
28290534 JH |
82 | } |
83 | ||
84 | void Viewport::drag_by(const QPoint &delta) | |
85 | { | |
60d9b99a | 86 | if (drag_offset_ == boost::none) |
28290534 JH |
87 | return; |
88 | ||
60d9b99a JS |
89 | view_.set_scale_offset(view_.scale(), |
90 | (*drag_offset_ - delta.x() * view_.scale())); | |
838d0522 SA |
91 | |
92 | view_.set_v_offset(-drag_v_offset_ - delta.y()); | |
28290534 JH |
93 | } |
94 | ||
95 | void Viewport::drag_release() | |
96 | { | |
60d9b99a | 97 | drag_offset_ = boost::none; |
28290534 JH |
98 | } |
99 | ||
e9e4e5e7 JH |
100 | vector< shared_ptr<ViewItem> > Viewport::items() |
101 | { | |
cc88566c | 102 | vector< shared_ptr<ViewItem> > items; |
e94f43c6 JH |
103 | const std::vector< shared_ptr<ViewItem> > view_items( |
104 | view_.list_by_type<ViewItem>()); | |
105 | copy(view_items.begin(), view_items.end(), back_inserter(items)); | |
e9e4e5e7 JH |
106 | const vector< shared_ptr<TimeItem> > time_items(view_.time_items()); |
107 | copy(time_items.begin(), time_items.end(), back_inserter(items)); | |
108 | return items; | |
109 | } | |
110 | ||
c9743553 JH |
111 | bool Viewport::touch_event(QTouchEvent *event) |
112 | { | |
113 | QList<QTouchEvent::TouchPoint> touchPoints = event->touchPoints(); | |
114 | ||
115 | if (touchPoints.count() != 2) { | |
116 | pinch_zoom_active_ = false; | |
117 | return false; | |
118 | } | |
119 | ||
120 | const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first(); | |
121 | const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last(); | |
122 | ||
123 | if (!pinch_zoom_active_ || | |
124 | (event->touchPointStates() & Qt::TouchPointPressed)) { | |
60d9b99a JS |
125 | pinch_offset0_ = (view_.offset() + view_.scale() * touchPoint0.pos().x()).convert_to<double>(); |
126 | pinch_offset1_ = (view_.offset() + view_.scale() * touchPoint1.pos().x()).convert_to<double>(); | |
c9743553 JH |
127 | pinch_zoom_active_ = true; |
128 | } | |
129 | ||
130 | double w = touchPoint1.pos().x() - touchPoint0.pos().x(); | |
131 | if (abs(w) >= 1.0) { | |
1c91f1a2 JH |
132 | const double scale = |
133 | fabs((pinch_offset1_ - pinch_offset0_) / w); | |
c9743553 JH |
134 | double offset = pinch_offset0_ - touchPoint0.pos().x() * scale; |
135 | if (scale > 0) | |
136 | view_.set_scale_offset(scale, offset); | |
137 | } | |
138 | ||
139 | if (event->touchPointStates() & Qt::TouchPointReleased) { | |
140 | pinch_zoom_active_ = false; | |
141 | ||
142 | if (touchPoint0.state() & Qt::TouchPointReleased) { | |
143 | // Primary touch released | |
28290534 | 144 | drag_release(); |
c9743553 JH |
145 | } else { |
146 | // Update the mouse down fields so that continued | |
147 | // dragging with the primary touch will work correctly | |
148 | mouse_down_point_ = touchPoint0.pos().toPoint(); | |
28290534 | 149 | drag(); |
c9743553 JH |
150 | } |
151 | } | |
152 | ||
153 | return true; | |
154 | } | |
155 | ||
e314eca4 | 156 | void Viewport::paintEvent(QPaintEvent*) |
d7002724 | 157 | { |
e94f43c6 JH |
158 | vector< shared_ptr<RowItem> > row_items(view_.list_by_type<RowItem>()); |
159 | assert(none_of(row_items.begin(), row_items.end(), | |
160 | [](const shared_ptr<RowItem> &r) { return !r; })); | |
beb897c6 | 161 | |
e94f43c6 JH |
162 | stable_sort(row_items.begin(), row_items.end(), |
163 | [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) { | |
164 | return a->point(QRect()).y() < b->point(QRect()).y(); }); | |
3e46726a | 165 | |
beb897c6 JH |
166 | const vector< shared_ptr<TimeItem> > time_items(view_.time_items()); |
167 | assert(none_of(time_items.begin(), time_items.end(), | |
168 | [](const shared_ptr<TimeItem> &t) { return !t; })); | |
169 | ||
64b60583 | 170 | QPainter p(this); |
ce6e73a8 | 171 | p.setRenderHint(QPainter::Antialiasing); |
3e46726a | 172 | |
36e7001d | 173 | const ViewItemPaintParams pp(rect(), view_.scale(), view_.offset()); |
3eb29afd | 174 | |
beb897c6 JH |
175 | for (const shared_ptr<TimeItem> t : time_items) |
176 | t->paint_back(p, pp); | |
e94f43c6 | 177 | for (const shared_ptr<RowItem> r : row_items) |
3eb29afd | 178 | r->paint_back(p, pp); |
3e46726a | 179 | |
beb897c6 JH |
180 | for (const shared_ptr<TimeItem> t : time_items) |
181 | t->paint_mid(p, pp); | |
e94f43c6 | 182 | for (const shared_ptr<RowItem> r : row_items) |
3eb29afd | 183 | r->paint_mid(p, pp); |
fe08b6e8 | 184 | |
e94f43c6 | 185 | for (const shared_ptr<RowItem> r : row_items) |
3eb29afd | 186 | r->paint_fore(p, pp); |
34ec0968 JH |
187 | |
188 | p.setRenderHint(QPainter::Antialiasing, false); | |
beb897c6 JH |
189 | for (const shared_ptr<TimeItem> t : time_items) |
190 | t->paint_fore(p, pp); | |
f76af637 | 191 | |
64b60583 | 192 | p.end(); |
6fa02541 | 193 | } |
009e1503 | 194 | |
903038a8 JH |
195 | void Viewport::mouseDoubleClickEvent(QMouseEvent *event) |
196 | { | |
197 | assert(event); | |
198 | ||
199 | if (event->buttons() & Qt::LeftButton) | |
8dbbc7f0 | 200 | view_.zoom(2.0, event->x()); |
903038a8 | 201 | else if (event->buttons() & Qt::RightButton) |
8dbbc7f0 | 202 | view_.zoom(-2.0, event->x()); |
903038a8 JH |
203 | } |
204 | ||
208c6fc3 | 205 | void Viewport::wheelEvent(QWheelEvent *e) |
1dd95c70 | 206 | { |
208c6fc3 JH |
207 | assert(e); |
208 | ||
2ad82c2e | 209 | if (e->orientation() == Qt::Vertical) { |
208c6fc3 JH |
210 | if (e->modifiers() & Qt::ControlModifier) { |
211 | // Vertical scrolling with the control key pressed | |
212 | // is intrepretted as vertical scrolling | |
213 | view_.set_v_offset(-view_.owner_visual_v_offset() - | |
214 | (e->delta() * height()) / (8 * 120)); | |
215 | } else { | |
216 | // Vertical scrolling is interpreted as zooming in/out | |
217 | view_.zoom(e->delta() / 120, e->x()); | |
218 | } | |
2ad82c2e | 219 | } else if (e->orientation() == Qt::Horizontal) { |
23840406 | 220 | // Horizontal scrolling is interpreted as moving left/right |
8dbbc7f0 | 221 | view_.set_scale_offset(view_.scale(), |
208c6fc3 | 222 | e->delta() * view_.scale() + view_.offset()); |
ffd5cd20 | 223 | } |
7cd5faf8 JH |
224 | } |
225 | ||
cdf7bea7 JH |
226 | } // namespace view |
227 | } // namespace pv |