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 ViewItemPaintParams pp(rect(), view_.scale(), view_.offset());
61 const vector< shared_ptr<ViewItem> > items(this->items());
62 for (auto i = items.rbegin(); i != items.rend(); i++)
63 if ((*i)->enabled() &&
64 (*i)->hit_box_rect(pp).contains(pt))
69 void Viewport::item_hover(const shared_ptr<ViewItem> &item)
71 if (item && item->is_draggable())
72 setCursor(dynamic_pointer_cast<RowItem>(item) ?
73 Qt::SizeVerCursor : Qt::SizeHorCursor);
80 drag_offset_ = view_.offset();
81 drag_v_offset_ = view_.owner_visual_v_offset();
84 void Viewport::drag_by(const QPoint &delta)
86 if (drag_offset_ == boost::none)
89 view_.set_scale_offset(view_.scale(),
90 (*drag_offset_ - delta.x() * view_.scale()));
92 view_.set_v_offset(-drag_v_offset_ - delta.y());
95 void Viewport::drag_release()
97 drag_offset_ = boost::none;
100 vector< shared_ptr<ViewItem> > Viewport::items()
102 vector< shared_ptr<ViewItem> > items;
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));
106 const vector< shared_ptr<TimeItem> > time_items(view_.time_items());
107 copy(time_items.begin(), time_items.end(), back_inserter(items));
111 bool Viewport::touch_event(QTouchEvent *event)
113 QList<QTouchEvent::TouchPoint> touchPoints = event->touchPoints();
115 if (touchPoints.count() != 2) {
116 pinch_zoom_active_ = false;
120 const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first();
121 const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last();
123 if (!pinch_zoom_active_ ||
124 (event->touchPointStates() & Qt::TouchPointPressed)) {
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>();
127 pinch_zoom_active_ = true;
130 double w = touchPoint1.pos().x() - touchPoint0.pos().x();
133 fabs((pinch_offset1_ - pinch_offset0_) / w);
134 double offset = pinch_offset0_ - touchPoint0.pos().x() * scale;
136 view_.set_scale_offset(scale, offset);
139 if (event->touchPointStates() & Qt::TouchPointReleased) {
140 pinch_zoom_active_ = false;
142 if (touchPoint0.state() & Qt::TouchPointReleased) {
143 // Primary touch released
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();
156 void Viewport::paintEvent(QPaintEvent*)
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; }));
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(); });
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; }));
171 p.setRenderHint(QPainter::Antialiasing);
173 const ViewItemPaintParams pp(rect(), view_.scale(), view_.offset());
175 for (const shared_ptr<TimeItem> t : time_items)
176 t->paint_back(p, pp);
177 for (const shared_ptr<RowItem> r : row_items)
178 r->paint_back(p, pp);
180 for (const shared_ptr<TimeItem> t : time_items)
182 for (const shared_ptr<RowItem> r : row_items)
185 for (const shared_ptr<RowItem> r : row_items)
186 r->paint_fore(p, pp);
188 p.setRenderHint(QPainter::Antialiasing, false);
189 for (const shared_ptr<TimeItem> t : time_items)
190 t->paint_fore(p, pp);
195 void Viewport::mouseDoubleClickEvent(QMouseEvent *event)
199 if (event->buttons() & Qt::LeftButton)
200 view_.zoom(2.0, event->x());
201 else if (event->buttons() & Qt::RightButton)
202 view_.zoom(-2.0, event->x());
205 void Viewport::wheelEvent(QWheelEvent *e)
209 if (e->orientation() == Qt::Vertical) {
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));
216 // Vertical scrolling is interpreted as zooming in/out
217 view_.zoom(e->delta() / 120, e->x());
219 } else if (e->orientation() == Qt::Horizontal) {
220 // Horizontal scrolling is interpreted as moving left/right
221 view_.set_scale_offset(view_.scale(),
222 e->delta() * view_.scale() + view_.offset());