source: trunk/demos/shared/arthurstyle.cpp@ 441

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#include "arthurstyle.h"
#include "arthurwidgets.h"
#include <QLayout>
#include <QPainter>
#include <QPainterPath>
#include <QPixmapCache>
#include <QRadioButton>
#include <QString>
#include <QStyleOption>
#include <QtDebug>

QPixmap cached(const QString &img)
{
    if (QPixmap *p = QPixmapCache::find(img))
        return *p;

    QPixmap pm;
    pm = QPixmap::fromImage(QImage(img), Qt::OrderedDither | Qt::OrderedAlphaDither);
    if (pm.isNull())
        return QPixmap();

    QPixmapCache::insert(img, pm);
    return pm;
}


ArthurStyle::ArthurStyle()
    : QWindowsStyle()
{
    Q_INIT_RESOURCE(shared);
}


void ArthurStyle::drawHoverRect(QPainter *painter, const QRect &r) const
{
    qreal h = r.height();
    qreal h2 = r.height() / qreal(2);
    QPainterPath path;
    path.addRect(r.x() + h2, r.y() + 0, r.width() - h2 * 2, r.height());
    path.addEllipse(r.x(), r.y(), h, h);
    path.addEllipse(r.x() + r.width() - h, r.y(), h, h);
    path.setFillRule(Qt::WindingFill);
    painter->setPen(Qt::NoPen);
    painter->setBrush(QColor(191, 215, 191));
    painter->setRenderHint(QPainter::Antialiasing);
    painter->drawPath(path);
}


void ArthurStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option,
                                QPainter *painter, const QWidget *widget) const
{

    Q_ASSERT(option);
    switch (element) {
    case PE_FrameFocusRect:
        break;

    case PE_IndicatorRadioButton:
        if (const QStyleOptionButton *button = qstyleoption_cast<const QStyleOptionButton *>(option)) {
            bool hover = (button->state & State_Enabled) && (button->state & State_MouseOver);
            painter->save();
            QPixmap radio;
            if (hover)
                drawHoverRect(painter, widget->rect());

            if (button->state & State_Sunken)
                radio = cached(":res/images/radiobutton-on.png");
            else if (button->state & State_On)
                radio = cached(":res/images/radiobutton_on.png");
            else
                radio = cached(":res/images/radiobutton_off.png");
            painter->drawPixmap(button->rect.topLeft(), radio);

            painter->restore();
        }
        break;