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#include <QtGui>

#include "norwegianwoodstyle.h"

//! [0]

void NorwegianWoodStyle::polish(QPalette &palette)

{

    QColor brown(212, 140, 95);

    QColor beige(236, 182, 120);

    QColor slightlyOpaqueBlack(0, 0, 0, 63);

    QPixmap backgroundImage(":/images/woodbackground.png");

    QPixmap buttonImage(":/images/woodbutton.png");

    QPixmap midImage = buttonImage;

    QPainter painter;

    painter.begin(&midImage);

    painter.setPen(Qt::NoPen);

    painter.fillRect(midImage.rect(), slightlyOpaqueBlack);

    painter.end();

//! [0]

//! [1]

    palette = QPalette(brown);

    palette.setBrush(QPalette::BrightText, Qt::white);

    palette.setBrush(QPalette::Base, beige);

    palette.setBrush(QPalette::Highlight, Qt::darkGreen);

    setTexture(palette, QPalette::Button, buttonImage);

    setTexture(palette, QPalette::Mid, midImage);

    setTexture(palette, QPalette::Window, backgroundImage);

    QBrush brush = palette.background();

    brush.setColor(brush.color().dark());

    palette.setBrush(QPalette::Disabled, QPalette::WindowText, brush);

    palette.setBrush(QPalette::Disabled, QPalette::Text, brush);

    palette.setBrush(QPalette::Disabled, QPalette::ButtonText, brush);

    palette.setBrush(QPalette::Disabled, QPalette::Base, brush);

    palette.setBrush(QPalette::Disabled, QPalette::Button, brush);

    palette.setBrush(QPalette::Disabled, QPalette::Mid, brush);

}

//! [1]

//! [3]

void NorwegianWoodStyle::polish(QWidget *widget)

//! [3] //! [4]

{

    if (qobject_cast<QPushButton *>(widget)

            || qobject_cast<QComboBox *>(widget))

        widget->setAttribute(Qt::WA_Hover, true);

}

//! [4]

//! [5]

void NorwegianWoodStyle::unpolish(QWidget *widget)

//! [5] //! [6]

{

    if (qobject_cast<QPushButton *>(widget)

            || qobject_cast<QComboBox *>(widget))

        widget->setAttribute(Qt::WA_Hover, false);

}

//! [6]

//! [7]

int NorwegianWoodStyle::pixelMetric(PixelMetric metric,

//! [7] //! [8]

                                    const QStyleOption *option,

                                    const QWidget *widget) const

{

    switch (metric) {

    case PM_ComboBoxFrameWidth:

        return 8;

    case PM_ScrollBarExtent:

        return QMotifStyle::pixelMetric(metric, option, widget) + 4;

    default:

        return QMotifStyle::pixelMetric(metric, option, widget);

    }

}

//! [8]

//! [9]

int NorwegianWoodStyle::styleHint(StyleHint hint, const QStyleOption *option,

//! [9] //! [10]

                                  const QWidget *widget,

                                  QStyleHintReturn *returnData) const

{

    switch (hint) {

    case SH_DitherDisabledText:

        return int(false);

    case SH_EtchDisabledText:

        return int(true);

    default:

        return QMotifStyle::styleHint(hint, option, widget, returnData);

    }

}

//! [10]

//! [11]

void NorwegianWoodStyle::drawPrimitive(PrimitiveElement element,

//! [11] //! [12]

                                       const QStyleOption *option,

                                       QPainter *painter,

                                       const QWidget *widget) const

{

    switch (element) {

    case PE_PanelButtonCommand:

        {

            int delta = (option->state & State_MouseOver) ? 64 : 0;

            QColor slightlyOpaqueBlack(0, 0, 0, 63);

            QColor semiTransparentWhite(255, 255, 255, 127 + delta);

            QColor semiTransparentBlack(0, 0, 0, 127 - delta);

            int x, y, width, height;

            option->rect.getRect(&x, &y, &width, &height);

//! [12]

//! [13]

            QPainterPath roundRect = roundRectPath(option->rect);

//! [13] //! [14]

            int radius = qMin(width, height) / 2;

//! [14]

//! [15]

            QBrush brush;

//! [15] //! [16]

            bool darker;

            const QStyleOptionButton *buttonOption =

                    qstyleoption_cast<const QStyleOptionButton *>(option);

            if (buttonOption

                    && (buttonOption->features & QStyleOptionButton::Flat)) {

                brush = option->palette.background();

                darker = (option->state & (State_Sunken | State_On));

            } else {

                if (option->state & (State_Sunken | State_On)) {

                    brush = option->palette.mid();

                    darker = !(option->state & State_Sunken);

                } else {

                    brush = option->palette.button();

                    darker = false;

//! [16] //! [17]

                }

//! [17] //! [18]

            }

//! [18]

//! [19]

            painter->save();

//! [19] //! [20]

            painter->setRenderHint(QPainter::Antialiasing, true);

//! [20] //! [21]

            painter->fillPath(roundRect, brush);

//! [21] //! [22]

            if (darker)

//! [22] //! [23]

                painter->fillPath(roundRect, slightlyOpaqueBlack);

//! [23]

//! [24]

            int penWidth;

//! [24] //! [25]

            if (radius < 10)

                penWidth = 3;

            else if (radius < 20)

                penWidth = 5;

            else

                penWidth = 7;

            QPen topPen(semiTransparentWhite, penWidth);

            QPen bottomPen(semiTransparentBlack, penWidth);

            if (option->state & (State_Sunken | State_On))

                qSwap(topPen, bottomPen);

//! [25]

//! [26]

            int x1 = x;

            int x2 = x + radius;

            int x3 = x + width - radius;

            int x4 = x + width;

            if (option->direction == Qt::RightToLeft) {

                qSwap(x1, x4);

                qSwap(x2, x3);

            }

            QPolygon topHalf;

            topHalf << QPoint(x1, y)

                    << QPoint(x4, y)

                    << QPoint(x3, y + radius)

                    << QPoint(x2, y + height - radius)

                    << QPoint(x1, y + height);

            painter->setClipPath(roundRect);

            painter->setClipRegion(topHalf, Qt::IntersectClip);

            painter->setPen(topPen);

            painter->drawPath(roundRect);

//! [26] //! [32]

            QPolygon bottomHalf = topHalf;

            bottomHalf[0] = QPoint(x4, y + height);

            painter->setClipPath(roundRect);

            painter->setClipRegion(bottomHalf, Qt::IntersectClip);

            painter->setPen(bottomPen);

            painter->drawPath(roundRect);

            painter->setPen(option->palette.foreground().color());

            painter->setClipping(false);

            painter->drawPath(roundRect);

            painter->restore();

        }

        break;

//! [32] //! [33]

    default:

//! [33] //! [34]

        QMotifStyle::drawPrimitive(element, option, painter, widget);

    }

}

//! [34]

//! [35]

void NorwegianWoodStyle::drawControl(ControlElement element,

//! [35] //! [36]

                                     const QStyleOption *option,

                                     QPainter *painter,

                                     const QWidget *widget) const

{

    switch (element) {

    case CE_PushButtonLabel:

        {

            QStyleOptionButton myButtonOption;

            const QStyleOptionButton *buttonOption =

                    qstyleoption_cast<const QStyleOptionButton *>(option);

            if (buttonOption) {

                myButtonOption = *buttonOption;

                if (myButtonOption.palette.currentColorGroup()

                        != QPalette::Disabled) {

                    if (myButtonOption.state & (State_Sunken | State_On)) {

                        myButtonOption.palette.setBrush(QPalette::ButtonText,

                                myButtonOption.palette.brightText());

                    }

                }

            }

            QMotifStyle::drawControl(element, &myButtonOption, painter, widget);

        }

        break;

    default:

        QMotifStyle::drawControl(element, option, painter, widget);

    }

}

//! [36]

//! [37]

void NorwegianWoodStyle::setTexture(QPalette &palette, QPalette::ColorRole role,

//! [37] //! [38]

                                    const QPixmap &pixmap)

{

    for (int i = 0; i < QPalette::NColorGroups; ++i) {

        QColor color = palette.brush(QPalette::ColorGroup(i), role).color();

        palette.setBrush(QPalette::ColorGroup(i), role, QBrush(color, pixmap));

    }

}

//! [38]

//! [39]

QPainterPath NorwegianWoodStyle::roundRectPath(const QRect &rect)

//! [39] //! [40]

{

    int radius = qMin(rect.width(), rect.height()) / 2;

    int diam = 2 * radius;

    int x1, y1, x2, y2;

    rect.getCoords(&x1, &y1, &x2, &y2);

    QPainterPath path;

    path.moveTo(x2, y1 + radius);

    path.arcTo(QRect(x2 - diam, y1, diam, diam), 0.0, +90.0);

    path.lineTo(x1 + radius, y1);

    path.arcTo(QRect(x1, y1, diam, diam), 90.0, +90.0);

    path.lineTo(x1, y2 - radius);

    path.arcTo(QRect(x1, y2 - diam, diam, diam), 180.0, +90.0);

    path.lineTo(x1 + radius, y2);

    path.arcTo(QRect(x2 - diam, y2 - diam, diam, diam), 270.0, +90.0);

    path.closeSubpath();

    return path;

}

//! [40]