#include "cursortest.h"
#include <QHBoxLayout>
#include <QGraphicsView>
#include <QPushButton>
#include <QGraphicsRectItem>
#include <QTimer>
#include <QGraphicsProxyWidget>
#include <QButtonGroup>

CursorTest::CursorTest(QWidget *parent, Qt::WFlags flags)
    : QWidget(parent, flags)
{
    // Setup class.
    this->view = new QGraphicsView();
    QHBoxLayout * layout = new QHBoxLayout();
    QPushButton * button_1 = new QPushButton("cursor 1");
    button_1->setCheckable(true);
    QPushButton * button_2 = new QPushButton("cursor 2");
    button_2->setCheckable(true);
    QPushButton * button_3 = new QPushButton("cursor 3");
    button_3->setCheckable(true);
    QPushButton * pan_button = new QPushButton("pan");
    pan_button->setCheckable(true);

    QButtonGroup * group = new QButtonGroup();
    group->addButton(button_1);
    group->addButton(button_2);
    group->addButton(button_3);
    group->addButton(pan_button);
    group->setExclusive(true);

    // Create scene and add example item.
    QGraphicsScene * scene = new QGraphicsScene();
    this->view->setScene(scene);

    //// Widget in the scene.
    //QPushButton * proxy_button = new QPushButton("proxy");
    //QGraphicsProxyWidget * proxy = new QGraphicsProxyWidget();
    //proxy->setWidget(proxy_button);
    //scene->addItem(proxy);

    // Create 2D item.
    QGraphicsRectItem * rect = new QGraphicsRectItem();
    rect->setPos(0, 50);
    rect->setRect(0.0f, 0.0f, 30.0f, 30.0f);
    rect->setFlag(QGraphicsItem::ItemIsMovable, true);
    scene->addItem(rect);
    
    // Signals & Slots.
    connect(button_1, SIGNAL(clicked()), this, SLOT(button1Clicked()));
    connect(button_2, SIGNAL(clicked()), this, SLOT(button2Clicked()));
    connect(button_3, SIGNAL(clicked()), this, SLOT(button3Clicked()));
    connect(pan_button, SIGNAL(toggled(bool)), this, SLOT(panButtonClicked(bool)));

    // Setup layout.
    layout->addWidget(this->view);
    layout->addWidget(button_1);
    layout->addWidget(button_2);
    layout->addWidget(button_3);
    layout->addWidget(pan_button);
    this->setLayout(layout);
}

CursorTest::~CursorTest()
{
}

void
CursorTest::button1Clicked()
{
    //this->view->viewport()->unsetCursor(); // Solution.
    this->view->viewport()->setCursor(Qt::PointingHandCursor);
}

void
CursorTest::button2Clicked()
{
    //this->view->viewport()->unsetCursor(); // Solution.
    this->view->viewport()->setCursor(Qt::ForbiddenCursor);
}

void
CursorTest::button3Clicked()
{
    //this->view->viewport()->unsetCursor(); // Solution.
    this->view->viewport()->setCursor(Qt::CrossCursor);
}

void
CursorTest::panButtonClicked(bool on)
{
    if (on)
    {
        this->view->setDragMode(QGraphicsView::ScrollHandDrag);
    }
    else
    {
        this->view->setDragMode(QGraphicsView::NoDrag);
    }
}