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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "navigatorgraphicsview.h"
#include "graphicsscene.h"
#include "graphicsview.h"
#include <QWheelEvent>
using namespace ScxmlEditor::Common;
NavigatorGraphicsView::NavigatorGraphicsView(QWidget *parent)
: QGraphicsView(parent)
{
setInteractive(false);
setViewportUpdateMode(FullViewportUpdate);
}
void NavigatorGraphicsView::setGraphicsScene(ScxmlEditor::PluginInterface::GraphicsScene *s)
{
if (scene())
scene()->disconnect(this);
setScene(s);
if (s)
connect(s, &PluginInterface::GraphicsScene::sceneRectChanged, this, &NavigatorGraphicsView::updateView);
}
void NavigatorGraphicsView::setMainViewPolygon(const QPolygonF &pol)
{
m_mainViewPolygon = mapFromScene(pol);
updateView();
}
void NavigatorGraphicsView::updateView()
{
fitInView(sceneRect()); //, Qt::KeepAspectRatio);
update();
}
void NavigatorGraphicsView::paintEvent(QPaintEvent *e)
{
QGraphicsView::paintEvent(e);
QPainter p(viewport());
p.save();
p.setBrush(Qt::NoBrush);
p.setPen(Qt::red);
p.drawPolygon(m_mainViewPolygon);
p.restore();
}
void NavigatorGraphicsView::wheelEvent(QWheelEvent *event)
{
if (Qt::ControlModifier & event->modifiers()) {
if (event->angleDelta().y() > 0)
emit zoomIn();
else
emit zoomOut();
emit moveMainViewTo(mapToScene(event->position().toPoint()));
} else
QGraphicsView::wheelEvent(event);
}
void NavigatorGraphicsView::mousePressEvent(QMouseEvent *event)
{
m_mouseDown = true;
emit moveMainViewTo(mapToScene(event->pos()));
QGraphicsView::mousePressEvent(event);
}
void NavigatorGraphicsView::mouseReleaseEvent(QMouseEvent *event)
{
Q_UNUSED(event)
m_mouseDown = false;
}
void NavigatorGraphicsView::mouseMoveEvent(QMouseEvent *event)
{
if (m_mouseDown)
emit moveMainViewTo(mapToScene(event->pos()));
}
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