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#include <QtGui>

#include "window.h"

//! [0]

Window::Window()

{

    originalRenderArea = new RenderArea;

    shapeComboBox = new QComboBox;

    shapeComboBox->addItem(tr("Clock"));

    shapeComboBox->addItem(tr("House"));

    shapeComboBox->addItem(tr("Text"));

    shapeComboBox->addItem(tr("Truck"));

    QGridLayout *layout = new QGridLayout;

    layout->addWidget(originalRenderArea, 0, 0);

    layout->addWidget(shapeComboBox, 1, 0);

//! [0]

//! [1]

    for (int i = 0; i < NumTransformedAreas; ++i) {

        transformedRenderAreas[i] = new RenderArea;

        operationComboBoxes[i] = new QComboBox;

        operationComboBoxes[i]->addItem(tr("No transformation"));

        operationComboBoxes[i]->addItem(tr("Rotate by 60\xB0"));

        operationComboBoxes[i]->addItem(tr("Scale to 75%"));

        operationComboBoxes[i]->addItem(tr("Translate by (50, 50)"));

        connect(operationComboBoxes[i], SIGNAL(activated(int)),

                this, SLOT(operationChanged()));

        layout->addWidget(transformedRenderAreas[i], 0, i + 1);

        layout->addWidget(operationComboBoxes[i], 1, i + 1);

    }

//! [1]

//! [2]

    setLayout(layout);

    setupShapes();

    shapeSelected(0);

    setWindowTitle(tr("Transformations"));

}

//! [2]

//! [3]

void Window::setupShapes()

{

    QPainterPath truck;

//! [3]

    truck.setFillRule(Qt::WindingFill);

    truck.moveTo(0.0, 87.0);

    truck.lineTo(0.0, 60.0);

    truck.lineTo(10.0, 60.0);

    truck.lineTo(35.0, 35.0);

    truck.lineTo(100.0, 35.0);

    truck.lineTo(100.0, 87.0);

    truck.lineTo(0.0, 87.0);

    truck.moveTo(17.0, 60.0);

    truck.lineTo(55.0, 60.0);

    truck.lineTo(55.0, 40.0);

    truck.lineTo(37.0, 40.0);

    truck.lineTo(17.0, 60.0);

    truck.addEllipse(17.0, 75.0, 25.0, 25.0);

    truck.addEllipse(63.0, 75.0, 25.0, 25.0);

//! [4]

    QPainterPath clock;

//! [4]

    clock.addEllipse(-50.0, -50.0, 100.0, 100.0);

    clock.addEllipse(-48.0, -48.0, 96.0, 96.0);

    clock.moveTo(0.0, 0.0);

    clock.lineTo(-2.0, -2.0);

    clock.lineTo(0.0, -42.0);

    clock.lineTo(2.0, -2.0);

    clock.lineTo(0.0, 0.0);

    clock.moveTo(0.0, 0.0);

    clock.lineTo(2.732, -0.732);

    clock.lineTo(24.495, 14.142);

    clock.lineTo(0.732, 2.732);

    clock.lineTo(0.0, 0.0);

//! [5]

    QPainterPath house;

//! [5]

    house.moveTo(-45.0, -20.0);

    house.lineTo(0.0, -45.0);

    house.lineTo(45.0, -20.0);

    house.lineTo(45.0, 45.0);

    house.lineTo(-45.0, 45.0);

    house.lineTo(-45.0, -20.0);

    house.addRect(15.0, 5.0, 20.0, 35.0);

    house.addRect(-35.0, -15.0, 25.0, 25.0);

//! [6]

    QPainterPath text;

//! [6]

    QFont font;

    font.setPixelSize(50);

    QRect fontBoundingRect = QFontMetrics(font).boundingRect(tr("Qt"));

    text.addText(-QPointF(fontBoundingRect.center()), font, tr("Qt"));

//! [7]

    shapes.append(clock);

    shapes.append(house);

    shapes.append(text);

    shapes.append(truck);

    connect(shapeComboBox, SIGNAL(activated(int)),

            this, SLOT(shapeSelected(int)));

}

//! [7]

//! [8]

void Window::operationChanged()

{

    static const Operation operationTable[] = {

        NoTransformation, Rotate, Scale, Translate

    };

    QList<Operation> operations;

    for (int i = 0; i < NumTransformedAreas; ++i) {

        int index = operationComboBoxes[i]->currentIndex();

        operations.append(operationTable[index]);

        transformedRenderAreas[i]->setOperations(operations);

    }

}

//! [8]

//! [9]

void Window::shapeSelected(int index)

{

    QPainterPath shape = shapes[index];

    originalRenderArea->setShape(shape);

    for (int i = 0; i < NumTransformedAreas; ++i)

        transformedRenderAreas[i]->setShape(shape);

}

//! [9]