dialogboxes.cpp

#include "dialogboxes.h"

//============================================================================//
//                                  ColorEdit                                 //
//============================================================================//

ColorEdit::ColorEdit(QRgb initialColor, int id)
    : m_color(initialColor), m_id(id)
{
    QHBoxLayout *layout = new QHBoxLayout;
    setLayout(layout);
    layout->setContentsMargins(0, 0, 0, 0);

    m_lineEdit = new QLineEdit(QString::number(m_color, 16));
    layout->addWidget(m_lineEdit);

    m_button = new QFrame;
    QPalette palette = m_button->palette();
    palette.setColor(QPalette::Window, QColor(m_color));
    m_button->setPalette(palette);
    m_button->setAutoFillBackground(true);
    m_button->setMinimumSize(32, 0);
    m_button->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
    m_button->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
    layout->addWidget(m_button);

    connect(m_lineEdit, SIGNAL(editingFinished()), this, SLOT(editDone()));
}

void ColorEdit::editDone()
{
    bool ok;
    QRgb newColor = m_lineEdit->text().toUInt(&ok, 16);
    if (ok)
        setColor(newColor);
}

void ColorEdit::mousePressEvent(QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton) {
        QColor color(m_color);
        QColorDialog dialog(color, 0);
        dialog.setOption(QColorDialog::ShowAlphaChannel, true);
// The ifdef block is a workaround for the beta, TODO: remove when bug 238525 is fixed
#ifdef Q_DEAD_CODE_FROM_QT4_MAC
        dialog.setOption(QColorDialog::DontUseNativeDialog, true);
#endif
        dialog.move(280, 120);
        if (dialog.exec() == QDialog::Rejected)
            return;
        QRgb newColor = dialog.selectedColor().rgba();
        if (newColor == m_color)
            return;
        setColor(newColor);
    }
}

void ColorEdit::setColor(QRgb color)
{
    m_color = color;
    m_lineEdit->setText(QString::number(m_color, 16)); // "Clean up" text
    QPalette palette = m_button->palette();
    palette.setColor(QPalette::Window, QColor(m_color));
    m_button->setPalette(palette);
    emit colorChanged(m_color, m_id);
}

//============================================================================//
//                                  FloatEdit                                 //
//============================================================================//

FloatEdit::FloatEdit(float initialValue, int id)
    : m_value(initialValue), m_id(id)
{
    QHBoxLayout *layout = new QHBoxLayout;
    setLayout(layout);
    layout->setContentsMargins(0, 0, 0, 0);

    m_lineEdit = new QLineEdit(QString::number(m_value));
    layout->addWidget(m_lineEdit);

    connect(m_lineEdit, SIGNAL(editingFinished()), this, SLOT(editDone()));
}

void FloatEdit::editDone()
{
    bool ok;
    float newValue = m_lineEdit->text().toFloat(&ok);
    if (ok) {
        m_value = newValue;
        m_lineEdit->setText(QString::number(m_value)); // "Clean up" text
        emit valueChanged(m_value, m_id);
    }
}

//============================================================================//
//                           TwoSidedGraphicsWidget                           //
//============================================================================//

TwoSidedGraphicsWidget::TwoSidedGraphicsWidget(QGraphicsScene *scene)
    : QObject(scene)
    , m_current(0)
    , m_angle(0)
    , m_delta(0)
{
    for (int i = 0; i < 2; ++i)
        m_proxyWidgets[i] = 0;
}

void TwoSidedGraphicsWidget::setWidget(int index, QWidget *widget)
{
    if (index < 0 || index >= 2)
    {
        qWarning("TwoSidedGraphicsWidget::setWidget: Index out of bounds, index == %d", index);
        return;
    }

    GraphicsWidget *proxy = new GraphicsWidget;
    proxy->setWidget(widget);

    if (m_proxyWidgets[index])
        delete m_proxyWidgets[index];
    m_proxyWidgets[index] = proxy;

    proxy->setCacheMode(QGraphicsItem::ItemCoordinateCache);
    proxy->setZValue(1e30); // Make sure the dialog is drawn on top of all other (OpenGL) items

    if (index != m_current)
        proxy->setVisible(false);

    qobject_cast<QGraphicsScene *>(parent())->addItem(proxy);
}

QWidget *TwoSidedGraphicsWidget::widget(int index)
{
    if (index < 0 || index >= 2)
    {
        qWarning("TwoSidedGraphicsWidget::widget: Index out of bounds, index == %d", index);
        return 0;
    }
    return m_proxyWidgets[index]->widget();
}

void TwoSidedGraphicsWidget::flip()
{
    m_delta = (m_current == 0 ? 9 : -9);
    animateFlip();
}

void TwoSidedGraphicsWidget::animateFlip()
{
    m_angle += m_delta;
    if (m_angle == 90) {
        int old = m_current;
        m_current ^= 1;
        m_proxyWidgets[old]->setVisible(false);
        m_proxyWidgets[m_current]->setVisible(true);
        m_proxyWidgets[m_current]->setGeometry(m_proxyWidgets[old]->geometry());
    }

    QRectF r = m_proxyWidgets[m_current]->boundingRect();
    m_proxyWidgets[m_current]->setTransform(QTransform()
        .translate(r.width() / 2, r.height() / 2)
        .rotate(m_angle - 180 * m_current, Qt::YAxis)
        .translate(-r.width() / 2, -r.height() / 2));

    if ((m_current == 0 && m_angle > 0) || (m_current == 1 && m_angle < 180))
        QTimer::singleShot(25, this, SLOT(animateFlip()));
}

QVariant GraphicsWidget::itemChange(GraphicsItemChange change, const QVariant &value)
{
    if (change == ItemPositionChange && scene()) {
        QRectF rect = boundingRect();
        QPointF pos = value.toPointF();
        QRectF sceneRect = scene()->sceneRect();
        if (pos.x() + rect.left() < sceneRect.left())
            pos.setX(sceneRect.left() - rect.left());
        else if (pos.x() + rect.right() >= sceneRect.right())
            pos.setX(sceneRect.right() - rect.right());
        if (pos.y() + rect.top() < sceneRect.top())
            pos.setY(sceneRect.top() - rect.top());
        else if (pos.y() + rect.bottom() >= sceneRect.bottom())
            pos.setY(sceneRect.bottom() - rect.bottom());
        return pos;
    }
    return QGraphicsProxyWidget::itemChange(change, value);
}

void GraphicsWidget::resizeEvent(QGraphicsSceneResizeEvent *event)
{
    setCacheMode(QGraphicsItem::NoCache);
    setCacheMode(QGraphicsItem::ItemCoordinateCache);
    QGraphicsProxyWidget::resizeEvent(event);
}

void GraphicsWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
    painter->setRenderHint(QPainter::Antialiasing, false);
    QGraphicsProxyWidget::paint(painter, option, widget);
    //painter->setRenderHint(QPainter::Antialiasing, true);
}

//============================================================================//
//                             RenderOptionsDialog                            //
//============================================================================//

RenderOptionsDialog::RenderOptionsDialog()
    : QDialog(0, Qt::CustomizeWindowHint | Qt::WindowTitleHint)
{
    setWindowOpacity(0.75);
    setWindowTitle(tr("Options (double click to flip)"));
    QGridLayout *layout = new QGridLayout;
    setLayout(layout);
    layout->setColumnStretch(1, 1);

    int row = 0;

    QCheckBox *check = new QCheckBox(tr("Dynamic cube map"));
    check->setCheckState(Qt::Unchecked);
    // Dynamic cube maps are only enabled when multi-texturing and render to texture are available.
    check->setEnabled(glActiveTexture && glGenFramebuffersEXT);
    connect(check, SIGNAL(stateChanged(int)), this, SIGNAL(dynamicCubemapToggled(int)));
    layout->addWidget(check, 0, 0, 1, 2);
    ++row;

    QPalette palette;

    // Load all .par files
    // .par files have a simple syntax for specifying user adjustable uniform variables.
    QSet<QByteArray> uniforms;
    QList<QString> filter = QStringList("*.par");
    QList<QFileInfo> files = QDir(":/res/boxes/").entryInfoList(filter, QDir::Files | QDir::Readable);

    foreach (QFileInfo fileInfo, files) {
        QFile file(fileInfo.absoluteFilePath());
        if (file.open(QIODevice::ReadOnly)) {
            while (!file.atEnd()) {
                QList<QByteArray> tokens = file.readLine().simplified().split(' ');
                QList<QByteArray>::const_iterator it = tokens.begin();
                if (it == tokens.end())
                    continue;
                QByteArray type = *it;
                if (++it == tokens.end())
                    continue;
                QByteArray name = *it;
                bool singleElement = (tokens.size() == 3); // type, name and one value
                char counter[10] = "000000000";
                int counterPos = 8; // position of last digit
                while (++it != tokens.end()) {
                    m_parameterNames << name;
                    if (!singleElement) {
                        m_parameterNames.back() += "[";
                        m_parameterNames.back() += counter + counterPos;
                        m_parameterNames.back() += "]";
                        int j = 8; // position of last digit
                        ++counter[j];
                        while (j > 0 && counter[j] > '9') {
                            counter[j] = '0';
                            ++counter[--j];
                        }
                        if (j < counterPos)
                            counterPos = j;
                    }

                    if (type == "color") {
                        layout->addWidget(new QLabel(m_parameterNames.back()));
                        bool ok;
                        ColorEdit *colorEdit = new ColorEdit(it->toUInt(&ok, 16), m_parameterNames.size() - 1);
                        m_parameterEdits << colorEdit;
                        layout->addWidget(colorEdit);
                        connect(colorEdit, SIGNAL(colorChanged(QRgb,int)), this, SLOT(setColorParameter(QRgb,int)));
                        ++row;
                    } else if (type == "float") {
                        layout->addWidget(new QLabel(m_parameterNames.back()));
                        bool ok;
                        FloatEdit *floatEdit = new FloatEdit(it->toFloat(&ok), m_parameterNames.size() - 1);
                        m_parameterEdits << floatEdit;
                        layout->addWidget(floatEdit);
                        connect(floatEdit, SIGNAL(valueChanged(float,int)), this, SLOT(setFloatParameter(float,int)));
                        ++row;
                    }
                }
            }
            file.close();
        }
    }

    layout->addWidget(new QLabel(tr("Texture:")));
    m_textureCombo = new QComboBox;
    connect(m_textureCombo, SIGNAL(currentIndexChanged(int)), this, SIGNAL(textureChanged(int)));
    layout->addWidget(m_textureCombo);
    ++row;

    layout->addWidget(new QLabel(tr("Shader:")));
    m_shaderCombo = new QComboBox;
    connect(m_shaderCombo, SIGNAL(currentIndexChanged(int)), this, SIGNAL(shaderChanged(int)));
    layout->addWidget(m_shaderCombo);
    ++row;

    layout->setRowStretch(row, 1);
}

int RenderOptionsDialog::addTexture(const QString &name)
{
    m_textureCombo->addItem(name);
    return m_textureCombo->count() - 1;
}

int RenderOptionsDialog::addShader(const QString &name)
{
    m_shaderCombo->addItem(name);
    return m_shaderCombo->count() - 1;
}

void RenderOptionsDialog::emitParameterChanged()
{
    foreach (ParameterEdit *edit, m_parameterEdits)
        edit->emitChange();
}

void RenderOptionsDialog::setColorParameter(QRgb color, int id)
{
    emit colorParameterChanged(m_parameterNames[id], color);
}

void RenderOptionsDialog::setFloatParameter(float value, int id)
{
    emit floatParameterChanged(m_parameterNames[id], value);
}

void RenderOptionsDialog::mouseDoubleClickEvent(QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton)
        emit doubleClicked();
}

//============================================================================//
//                                 ItemDialog                                 //
//============================================================================//

ItemDialog::ItemDialog()
    : QDialog(0, Qt::CustomizeWindowHint | Qt::WindowTitleHint)
{
    setWindowTitle(tr("Items (double click to flip)"));
    setWindowOpacity(0.75);
    resize(160, 100);

    QVBoxLayout *layout = new QVBoxLayout;
    setLayout(layout);
    QPushButton *button;

    button = new QPushButton(tr("Add Qt box"));
    layout->addWidget(button);
    connect(button, SIGNAL(clicked()), this, SLOT(triggerNewQtBox()));

    button = new QPushButton(tr("Add circle"));
    layout->addWidget(button);
    connect(button, SIGNAL(clicked()), this, SLOT(triggerNewCircleItem()));

    button = new QPushButton(tr("Add square"));
    layout->addWidget(button);
    connect(button, SIGNAL(clicked()), this, SLOT(triggerNewSquareItem()));

    layout->addStretch(1);
}

void ItemDialog::triggerNewQtBox()
{
    emit newItemTriggered(QtBoxItem);
}

void ItemDialog::triggerNewCircleItem()
{
    emit newItemTriggered(CircleItem);
}

void ItemDialog::triggerNewSquareItem()
{
    emit newItemTriggered(SquareItem);
}

void ItemDialog::mouseDoubleClickEvent(QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton)
        emit doubleClicked();
}