VoronoiGeneratorDialog.cpp

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/*
 * Copyright 2011-2016 Universiteit Antwerpen
 *
 * Licensed under the EUPL, Version 1.1 or  as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at: http://ec.europa.eu/idabc/eupl5
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing
 * permissions and limitations under the Licence.
 */
#include "VoronoiGeneratorDialog.h"

#include "editor/PolygonUtils.h"

#include "VoronoiTesselation.h"
#include <cassert>
#include <QBoxLayout>
#include <QBrush>
#include <QComboBox>
#include <QDialogButtonBox>
#include <QGraphicsPolygonItem>
#include <QGraphicsScene>
#include <QPen>
#include "gui/PanAndZoomView.h"

class QColor;
class QWidget;

namespace SimPT_Editor {

using namespace SimShell;
using namespace SimShell::Gui;

const double VoronoiGeneratorDialog::g_scene_margin = 2.0;

VoronoiGeneratorDialog::VoronoiGeneratorDialog(const QPolygonF &boundaryPolygon, double initialScale, QWidget *parent)
        : QDialog(parent)
{
        SetupSceneItems(boundaryPolygon);
        SetupGui(initialScale);
}

VoronoiGeneratorDialog::~VoronoiGeneratorDialog()
{
}

std::list<QPolygonF> VoronoiGeneratorDialog::GetGeneratedPolygons() const
{
        // Make the polygons counterclockwise (in the standard coordinate system).
        std::list<QPolygonF> polygons;
        for (QPolygonF& polygon : m_tesselation->GetCellPolygons()) {
                polygons.push_back(PolygonUtils::Counterclockwise(polygon));
        }

        return !polygons.empty() ? polygons : std::list<QPolygonF>({m_tesselation->polygon()});
}

void VoronoiGeneratorDialog::SetupSceneItems(const QPolygonF &boundaryPolygon)
{
        m_scene = new QGraphicsScene();
        m_tesselation = new VoronoiTesselation(boundaryPolygon);
        m_tesselation->setPen(QPen(QBrush(QColor(51, 102, 0, 255)), 0));
        m_scene->addItem(m_tesselation);
        m_scene->setSceneRect(m_tesselation->boundingRect().adjusted(
                -g_scene_margin, -g_scene_margin, g_scene_margin, g_scene_margin));
}

void VoronoiGeneratorDialog::SetupGui(double scale)
{
        setWindowTitle("Voronoi cell pattern generator");
        setMinimumSize(800, 500);

        // > GUI layout
        QVBoxLayout *layout = new QVBoxLayout();

        //       > Generator graphics view
        PanAndZoomView *view = new PanAndZoomView();
        view->setParent(this);
        view->ScaleView(scale);
        view->setScene(m_scene);
        view->setRenderHints(QPainter::Antialiasing);

        layout->addWidget(view);
        //      < Generator graphics view

        //      > Dialog button box layout
        QHBoxLayout *controlsLayout = new QHBoxLayout();
        controlsLayout->addStretch();

        //              > Dialog button box
        QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Cancel | QDialogButtonBox::Ok);
        connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
        connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
        controlsLayout->addWidget(buttonBox);
        //              < Dialog button box

        layout->addLayout(controlsLayout);
        //      < Dialog button box layout

        setLayout(layout);
        // < GUI layout
}

} // namespace