2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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
28 #include "viewitempaintparams.hpp"
29 #include "viewport.hpp"
31 #include <pv/session.hpp>
33 #include <QMouseEvent>
36 using std::back_inserter;
38 using std::dynamic_pointer_cast;
42 using std::numeric_limits;
43 using std::shared_ptr;
44 using std::stable_sort;
50 Viewport::Viewport(View &parent) :
52 pinch_zoom_active_(false)
54 setAutoFillBackground(true);
55 setBackgroundRole(QPalette::Base);
58 shared_ptr<ViewItem> Viewport::get_mouse_over_item(const QPoint &pt)
60 const vector< shared_ptr<ViewItem> > items(this->items());
61 for (auto i = items.rbegin(); i != items.rend(); i++)
62 if ((*i)->enabled() &&
63 (*i)->hit_box_rect(rect()).contains(pt))
68 void Viewport::item_hover(const shared_ptr<ViewItem> &item)
71 setCursor(dynamic_pointer_cast<RowItem>(item) ?
72 Qt::SizeVerCursor : Qt::SizeHorCursor);
79 drag_offset_ = view_.offset();
82 void Viewport::drag_by(const QPoint &delta)
84 if (drag_offset_ == boost::none)
87 view_.set_scale_offset(view_.scale(),
88 (*drag_offset_ - delta.x() * view_.scale()));
91 void Viewport::drag_release()
93 drag_offset_ = boost::none;
96 vector< shared_ptr<ViewItem> > Viewport::items()
98 vector< shared_ptr<ViewItem> > items;
99 const vector< shared_ptr<TraceTreeItem> > trace_tree_items(
100 view_.list_by_type<TraceTreeItem>());
101 copy(trace_tree_items.begin(), trace_tree_items.end(),
102 back_inserter(items));
103 const vector< shared_ptr<TimeItem> > time_items(view_.time_items());
104 copy(time_items.begin(), time_items.end(), back_inserter(items));
108 bool Viewport::touch_event(QTouchEvent *event)
110 QList<QTouchEvent::TouchPoint> touchPoints = event->touchPoints();
112 if (touchPoints.count() != 2) {
113 pinch_zoom_active_ = false;
117 const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first();
118 const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last();
120 if (!pinch_zoom_active_ ||
121 (event->touchPointStates() & Qt::TouchPointPressed)) {
122 pinch_offset0_ = (view_.offset() + view_.scale() * touchPoint0.pos().x()).convert_to<double>();
123 pinch_offset1_ = (view_.offset() + view_.scale() * touchPoint1.pos().x()).convert_to<double>();
124 pinch_zoom_active_ = true;
127 double w = touchPoint1.pos().x() - touchPoint0.pos().x();
130 fabs((pinch_offset1_ - pinch_offset0_) / w);
131 double offset = pinch_offset0_ - touchPoint0.pos().x() * scale;
133 view_.set_scale_offset(scale, offset);
136 if (event->touchPointStates() & Qt::TouchPointReleased) {
137 pinch_zoom_active_ = false;
139 if (touchPoint0.state() & Qt::TouchPointReleased) {
140 // Primary touch released
143 // Update the mouse down fields so that continued
144 // dragging with the primary touch will work correctly
145 mouse_down_point_ = touchPoint0.pos().toPoint();
153 void Viewport::paintEvent(QPaintEvent*)
155 vector< shared_ptr<TraceTreeItem> > trace_tree_items(
156 view_.list_by_type<TraceTreeItem>());
157 assert(none_of(trace_tree_items.begin(), trace_tree_items.end(),
158 [](const shared_ptr<TraceTreeItem> &r) { return !r; }));
160 stable_sort(trace_tree_items.begin(), trace_tree_items.end(),
161 [](const shared_ptr<TraceTreeItem> &a, const shared_ptr<TraceTreeItem> &b) {
162 return a->visual_v_offset() < b->visual_v_offset(); });
164 const vector< shared_ptr<TimeItem> > time_items(view_.time_items());
165 assert(none_of(time_items.begin(), time_items.end(),
166 [](const shared_ptr<TimeItem> &t) { return !t; }));
169 p.setRenderHint(QPainter::Antialiasing);
171 const ViewItemPaintParams pp(rect(), view_.scale(), view_.offset());
173 for (const shared_ptr<TimeItem> t : time_items)
174 t->paint_back(p, pp);
175 for (const shared_ptr<TraceTreeItem> r : trace_tree_items)
176 r->paint_back(p, pp);
178 for (const shared_ptr<TimeItem> t : time_items)
180 for (const shared_ptr<TraceTreeItem> r : trace_tree_items)
183 p.setRenderHint(QPainter::Antialiasing, false);
185 for (const shared_ptr<TraceTreeItem> r : trace_tree_items)
186 r->paint_fore(p, pp);
187 for (const shared_ptr<TimeItem> t : time_items)
188 t->paint_fore(p, pp);
193 void Viewport::mouseDoubleClickEvent(QMouseEvent *event)
197 if (event->buttons() & Qt::LeftButton)
198 view_.zoom(2.0, event->x());
199 else if (event->buttons() & Qt::RightButton)
200 view_.zoom(-2.0, event->x());
203 void Viewport::wheelEvent(QWheelEvent *e)
207 if (e->orientation() == Qt::Vertical)
209 if (e->modifiers() & Qt::ControlModifier) {
210 // Vertical scrolling with the control key pressed
211 // is intrepretted as vertical scrolling
212 view_.set_v_offset(-view_.owner_visual_v_offset() -
213 (e->delta() * height()) / (8 * 120));
215 // Vertical scrolling is interpreted as zooming in/out
216 view_.zoom(e->delta() / 120, e->x());
219 else if (e->orientation() == Qt::Horizontal)
221 // Horizontal scrolling is interpreted as moving left/right
222 view_.set_scale_offset(view_.scale(),
223 e->delta() * view_.scale() + view_.offset());