arthurstyle.cpp

奇趣公司比较新的qt/emd版本

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**
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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
{
    double h = r.height();
    double h2 = r.height() / 2.0;
    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;

    case PE_PanelButtonCommand:
        if (const QStyleOptionButton *button = qstyleoption_cast<const QStyleOptionButton *>(option)) {
            bool hover = (button->state & State_Enabled) && (button->state & State_MouseOver);

            painter->save();
            const QPushButton *pushButton = qobject_cast<const QPushButton *>(widget);
            Q_ASSERT(pushButton);
            QWidget *parent = pushButton->parentWidget();
            if (parent && qobject_cast<QGroupBox *>(parent)) {
                QLinearGradient lg(0, 0, 0, parent->height());
                lg.setColorAt(0, QColor(224,224,224));
                lg.setColorAt(1, QColor(255,255,255));
                painter->setPen(Qt::NoPen);
                painter->setBrush(lg);
                painter->setBrushOrigin(-widget->mapToParent(QPoint(0,0)));
                painter->drawRect(button->rect);
                painter->setBrushOrigin(0,0);
            }

            bool down = (button->state & State_Sunken) || (button->state & State_On);

            QPixmap left, right, mid;
            if (down) {
                left = cached(":res/images/button_pressed_cap_left.png");
                right = cached(":res/images/button_pressed_cap_right.png");
                mid = cached(":res/images/button_pressed_stretch.png");
            } else {
                left = cached(":res/images/button_normal_cap_left.png");
                right = cached(":res/images/button_normal_cap_right.png");
                mid = cached(":res/images/button_normal_stretch.png");
            }
            painter->drawPixmap(button->rect.topLeft(), left);
            painter->drawTiledPixmap(QRect(button->rect.x() + left.width(),
                                           button->rect.y(),
                                           button->rect.width() - left.width() - right.width(),
                                           left.height()),
                                     mid);
            painter->drawPixmap(button->rect.x() + button->rect.width() - right.width(),
                                button->rect.y(),
                                right);
            if (hover)
                painter->fillRect(widget->rect().adjusted(3,5,-3,-5), QColor(31,127,31,63));
            painter->restore();
        }
        break;

    case PE_FrameGroupBox:
        if (const QStyleOptionFrameV2 *group
                = qstyleoption_cast<const QStyleOptionFrameV2 *>(option)) {
            const QRect &r = group->rect;

            painter->save();
            int radius = 14;
            int radius2 = radius*2;
            QPainterPath clipPath;
            clipPath.moveTo(radius, 0);
            clipPath.arcTo(r.right() - radius2, 0, radius2, radius2, 90, -90);
            clipPath.arcTo(r.right() - radius2, r.bottom() - radius2, radius2, radius2, 0, -90);
            clipPath.arcTo(r.left(), r.bottom() - radius2, radius2, radius2, 270, -90);
            clipPath.arcTo(r.left(), r.top(), radius2, radius2, 180, -90);
            painter->setClipPath(clipPath);
            QPixmap titleStretch = cached(":res/images/title_stretch.png");
            QPixmap topLeft = cached(":res/images/groupframe_topleft.png");
            QPixmap topRight = cached(":res/images/groupframe_topright.png");
            QPixmap bottomLeft = cached(":res/images/groupframe_bottom_left.png");
            QPixmap bottomRight = cached(":res/images/groupframe_bottom_right.png");
            QPixmap leftStretch = cached(":res/images/groupframe_left_stretch.png");
            QPixmap topStretch = cached(":res/images/groupframe_top_stretch.png");
            QPixmap rightStretch = cached(":res/images/groupframe_right_stretch.png");
            QPixmap bottomStretch = cached(":res/images/groupframe_bottom_stretch.png");
            QLinearGradient lg(0, 0, 0, r.height());
            lg.setColorAt(0, QColor(224,224,224));
            lg.setColorAt(1, QColor(255,255,255));
            painter->setPen(Qt::NoPen);
            painter->setBrush(lg);
            painter->drawRect(r.adjusted(0, titleStretch.height()/2, 0, 0));
            painter->setClipping(false);

            int topFrameOffset = titleStretch.height()/2 - 2;
            painter->drawPixmap(r.topLeft() + QPoint(0, topFrameOffset), topLeft);
            painter->drawPixmap(r.topRight() - QPoint(topRight.width()-1, 0)
                                + QPoint(0, topFrameOffset), topRight);
            painter->drawPixmap(r.bottomLeft() - QPoint(0, bottomLeft.height()-1), bottomLeft);
            painter->drawPixmap(r.bottomRight() - QPoint(bottomRight.width()-1,
                                bottomRight.height()-1), bottomRight);

            QRect left = r;
            left.setY(r.y() + topLeft.height() + topFrameOffset);
            left.setWidth(leftStretch.width());
            left.setHeight(r.height() - topLeft.height() - bottomLeft.height() - topFrameOffset);
            painter->drawTiledPixmap(left, leftStretch);

            QRect top = r;
            top.setX(r.x() + topLeft.width());
            top.setY(r.y() + topFrameOffset);
            top.setWidth(r.width() - topLeft.width() - topRight.width());
            top.setHeight(topLeft.height());
            painter->drawTiledPixmap(top, topStretch);

            QRect right = r;
            right.setX(r.right() - rightStretch.width()+1);
            right.setY(r.y() + topRight.height() + topFrameOffset);
            right.setWidth(rightStretch.width());
            right.setHeight(r.height() - topRight.height()
                            - bottomRight.height() - topFrameOffset);
            painter->drawTiledPixmap(right, rightStretch);

            QRect bottom = r;
            bottom.setX(r.x() + bottomLeft.width());
            bottom.setY(r.bottom() - bottomStretch.height()+1);