+++ /dev/null
-/*
- * This file is part of the PulseView project.
- *
- * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <cassert>
-#include <cmath>
-#include <algorithm>
-#include <limits>
-
-#include "signal.hpp"
-#include "view.hpp"
-#include "viewitempaintparams.hpp"
-#include "viewport.hpp"
-
-#include <pv/session.hpp>
-
-#include <QMouseEvent>
-
-using std::abs;
-using std::back_inserter;
-using std::copy;
-using std::dynamic_pointer_cast;
-using std::max;
-using std::min;
-using std::none_of;
-using std::numeric_limits;
-using std::shared_ptr;
-using std::stable_sort;
-using std::vector;
-
-namespace pv {
-namespace view {
-
-Viewport::Viewport(View &parent) :
- ViewWidget(parent),
- drag_offset_(numeric_limits<double>::signaling_NaN()),
- pinch_zoom_active_(false)
-{
- setAutoFillBackground(true);
- setBackgroundRole(QPalette::Base);
-}
-
-shared_ptr<ViewItem> Viewport::get_mouse_over_item(const QPoint &pt)
-{
- const vector< shared_ptr<ViewItem> > items(this->items());
- for (auto i = items.rbegin(); i != items.rend(); i++)
- if ((*i)->enabled() &&
- (*i)->hit_box_rect(rect()).contains(pt))
- return *i;
- return nullptr;
-}
-
-void Viewport::item_hover(const shared_ptr<ViewItem> &item)
-{
- if (item)
- setCursor(dynamic_pointer_cast<RowItem>(item) ?
- Qt::SizeVerCursor : Qt::SizeHorCursor);
- else
- unsetCursor();
-}
-
-void Viewport::drag()
-{
- drag_offset_ = view_.offset();
-}
-
-void Viewport::drag_by(const QPoint &delta)
-{
- if (isnan(drag_offset_))
- return;
-
- view_.set_scale_offset(view_.scale(), drag_offset_ -
- delta.x() * view_.scale());
-}
-
-void Viewport::drag_release()
-{
- drag_offset_ = numeric_limits<double>::signaling_NaN();
-}
-
-vector< shared_ptr<ViewItem> > Viewport::items()
-{
- vector< shared_ptr<ViewItem> > items(view_.begin(), view_.end());
- const vector< shared_ptr<TimeItem> > time_items(view_.time_items());
- copy(time_items.begin(), time_items.end(), back_inserter(items));
- return items;
-}
-
-bool Viewport::touch_event(QTouchEvent *event)
-{
- QList<QTouchEvent::TouchPoint> touchPoints = event->touchPoints();
-
- if (touchPoints.count() != 2) {
- pinch_zoom_active_ = false;
- return false;
- }
-
- const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first();
- const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last();
-
- if (!pinch_zoom_active_ ||
- (event->touchPointStates() & Qt::TouchPointPressed)) {
- pinch_offset0_ = view_.offset() + view_.scale() * touchPoint0.pos().x();
- pinch_offset1_ = view_.offset() + view_.scale() * touchPoint1.pos().x();
- pinch_zoom_active_ = true;
- }
-
- double w = touchPoint1.pos().x() - touchPoint0.pos().x();
- if (abs(w) >= 1.0) {
- const double scale =
- fabs((pinch_offset1_ - pinch_offset0_) / w);
- double offset = pinch_offset0_ - touchPoint0.pos().x() * scale;
- if (scale > 0)
- view_.set_scale_offset(scale, offset);
- }
-
- if (event->touchPointStates() & Qt::TouchPointReleased) {
- pinch_zoom_active_ = false;
-
- if (touchPoint0.state() & Qt::TouchPointReleased) {
- // Primary touch released
- drag_release();
- } else {
- // Update the mouse down fields so that continued
- // dragging with the primary touch will work correctly
- mouse_down_point_ = touchPoint0.pos().toPoint();
- drag();
- }
- }
-
- return true;
-}
-
-void Viewport::paintEvent(QPaintEvent*)
-{
- vector< shared_ptr<RowItem> > row_items(view_.begin(), view_.end());
- assert(none_of(row_items.begin(), row_items.end(),
- [](const shared_ptr<RowItem> &r) { return !r; }));
-
- stable_sort(row_items.begin(), row_items.end(),
- [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) {
- return a->visual_v_offset() < b->visual_v_offset(); });
-
- const vector< shared_ptr<TimeItem> > time_items(view_.time_items());
- assert(none_of(time_items.begin(), time_items.end(),
- [](const shared_ptr<TimeItem> &t) { return !t; }));
-
- QPainter p(this);
- p.setRenderHint(QPainter::Antialiasing);
-
- const ViewItemPaintParams pp(rect(), view_.scale(), view_.offset());
-
- for (const shared_ptr<TimeItem> t : time_items)
- t->paint_back(p, pp);
- for (const shared_ptr<RowItem> r : row_items)
- r->paint_back(p, pp);
-
- for (const shared_ptr<TimeItem> t : time_items)
- t->paint_mid(p, pp);
- for (const shared_ptr<RowItem> r : row_items)
- r->paint_mid(p, pp);
-
- for (const shared_ptr<RowItem> r : row_items)
- r->paint_fore(p, pp);
- for (const shared_ptr<TimeItem> t : time_items)
- t->paint_fore(p, pp);
-
- p.end();
-}
-
-void Viewport::mouseDoubleClickEvent(QMouseEvent *event)
-{
- assert(event);
-
- if (event->buttons() & Qt::LeftButton)
- view_.zoom(2.0, event->x());
- else if (event->buttons() & Qt::RightButton)
- view_.zoom(-2.0, event->x());
-}
-
-void Viewport::wheelEvent(QWheelEvent *event)
-{
- assert(event);
-
- if (event->orientation() == Qt::Vertical) {
- // Vertical scrolling is interpreted as zooming in/out
- view_.zoom(event->delta() / 120, event->x());
- } else if (event->orientation() == Qt::Horizontal) {
- // Horizontal scrolling is interpreted as moving left/right
- view_.set_scale_offset(view_.scale(),
- event->delta() * view_.scale()
- + view_.offset());
- }
-}
-
-} // namespace view
-} // namespace pv
projects / pulseview.git / blobdiff