qplastiquestyle.cpp

qt-x11-opensource-src-4.1.4.tar.gz源码

    if ((option->state & QStyle::State_Sunken) || (option->state & QStyle::State_On))
        painter->setPen(option->palette.button().color().dark(110));
    else
        painter->setPen(gradientStopColor.dark(102));
    painter->drawLine(rect.left() + 2, rect.bottom() - 1, rect.right() - 2, rect.bottom() - 1);
    painter->drawLine(rect.right() - 1, rect.top() + 2, rect.right() - 1, rect.bottom() - 2);

    painter->setPen(oldPen);
}

static void qt_plastique_drawShadedPanel(QPainter *painter, const QStyleOption *option, bool base,
                                         const QWidget *widget)
{
    QRect rect = option->rect;
    QPen oldPen = painter->pen();

    QColor gradientStartColor = option->palette.button().color().light(104);
    QColor gradientStopColor = option->palette.button().color().dark(105);

    // gradient fill
    if ((option->state & QStyle::State_Enabled) || !(option->state & QStyle::State_AutoRaise)) {
        if ((option->state & QStyle::State_Sunken) || (option->state & QStyle::State_On)) {
            qt_plastique_draw_gradient(painter, rect.adjusted(1, 1, -1, -1),
                                       option->palette.button().color().dark(114),
                                       option->palette.button().color().dark(106));
        } else {
            qt_plastique_draw_gradient(painter, rect.adjusted(1, 1, -1, -1),
                                       base ? option->palette.background().color().light(105) : gradientStartColor,
                                       base ? option->palette.background().color().dark(102) : gradientStopColor);
        }
    }

    qt_plastique_drawFrame(painter, option, widget);

    painter->setPen(oldPen);
}

static void qt_plastique_draw_mdibutton(QPainter *painter, const QStyleOptionTitleBar *option, const QRect &tmp, bool hover)
{
    if (tmp.isNull())
        return;
    bool active = (option->titleBarState & QStyle::State_Active);

    // ### use palette colors instead
    QColor mdiButtonGradientStartColor;
    QColor mdiButtonGradientStopColor;
    if (active) {
        mdiButtonGradientStartColor = QColor(hover ? 0x7d8bb1 : 0x55689a);
        mdiButtonGradientStopColor = QColor(hover ? 0x939ebe : 0x7381ab);
    } else {
        mdiButtonGradientStartColor = QColor(hover ? 0x9e9e9e : 0x818181);
        mdiButtonGradientStopColor = QColor(hover ? 0xababab : 0x929292);
    }

    qt_plastique_draw_gradient(painter, tmp.adjusted(1, 1, -1, -1),
                               mdiButtonGradientStartColor, mdiButtonGradientStopColor);

    QColor mdiButtonBorderColor;
    if (active) {
        mdiButtonBorderColor = hover ? QColor(0x627097) : QColor(0x324577);
    } else {
        mdiButtonBorderColor = hover ? QColor(0x838383) : QColor(0x5e5e5e);
    }
    painter->setPen(QPen(mdiButtonBorderColor, 1));
    painter->drawLine(tmp.left() + 2, tmp.top(), tmp.right() - 2, tmp.top());
    painter->drawLine(tmp.left() + 2, tmp.bottom(), tmp.right() - 2, tmp.bottom());
    painter->drawLine(tmp.left(), tmp.top() + 2, tmp.left(), tmp.bottom() - 2);
    painter->drawLine(tmp.right(), tmp.top() + 2, tmp.right(), tmp.bottom() - 2);
    painter->drawPoint(tmp.left() + 1, tmp.top() + 1);
    painter->drawPoint(tmp.right() - 1, tmp.top() + 1);
    painter->drawPoint(tmp.left() + 1, tmp.bottom() - 1);
    painter->drawPoint(tmp.right() - 1, tmp.bottom() - 1);
}

#ifndef QT_NO_DOCKWIDGET
static QString elliditide(const QString &text, const QFontMetrics &fontMetrics, const QRect &rect, int *textWidth = 0)
{
    // Chop and insert ellide into title if text is too wide
    QString title = text;
    int width = textWidth ? *textWidth : fontMetrics.width(text);
    QString ellipsis = QLatin1String("...");
    if (width > rect.width()) {
        QString leftHalf = title.left(title.size() / 2);
        QString rightHalf = title.mid(leftHalf.size() + 1);
        while (!leftHalf.isEmpty() && !rightHalf.isEmpty()) {
            leftHalf.chop(1);
            int width = fontMetrics.width(leftHalf + ellipsis + rightHalf);
            if (width < rect.width()) {
                title = leftHalf + ellipsis + rightHalf;
                width = width;
                break;
            }
            rightHalf.remove(0, 1);
            width = fontMetrics.width(leftHalf + ellipsis + rightHalf);
            if (width < rect.width()) {
                title = leftHalf + ellipsis + rightHalf;
                width = width;
                break;
            }
        }
    }
    if (textWidth)
        *textWidth = width;
    return title;
}
#endif // QT_NO_DOCKWIDGET

#if !defined(QT_NO_DOCKWIDGET) || !defined(QT_NO_SPLITTER)
static void qt_plastique_draw_handle(QPainter *painter, const QStyleOption *option,
                                     const QRect &rect, Qt::Orientation orientation,
                                     const QWidget *widget)
{
    QColor borderColor = option->palette.background().color().dark(178);
    QColor alphaCornerColor;
    if (widget) {
        // ### backgroundrole/foregroundrole should be part of the style option
        alphaCornerColor = mergedColors(option->palette.color(widget->backgroundRole()), borderColor);
    } else {
        alphaCornerColor = mergedColors(option->palette.background().color(), borderColor);
    }

    QImage handle(qt_simple_toolbarhandle);
    handle.setColor(1, alphaCornerColor.rgba());
    handle.setColor(2, mergedColors(alphaCornerColor, option->palette.base().color()).rgba());
    handle.setColor(3, option->palette.base().color().rgba());

    const int spacing = 2;

    if (orientation == Qt::Vertical) {
        int nchunks = rect.width() / (handle.width() + spacing);
        for (int i = 0; i < nchunks; ++i)
            painter->drawImage(QPoint(rect.left() + i * (handle.width() + spacing), rect.top()), handle);
    } else {
        int nchunks = rect.height() / (handle.height() + spacing);
        for (int i = 0; i < nchunks; ++i)
            painter->drawImage(QPoint(rect.left(), rect.top() + i * (handle.height() + spacing)), handle);
    }
}
#endif

class QPlastiqueStylePrivate
{
public:
    QPlastiqueStylePrivate(QPlastiqueStyle *qq);
    virtual ~QPlastiqueStylePrivate();

#ifndef QT_NO_PROGRESSBAR
    QList<QProgressBar *> bars;
    int progressBarAnimateTimer;
    QTime timer;
    int animateStep;
#endif

    QPlastiqueStyle *q;
};

/*!
  \internal
 */
QPlastiqueStylePrivate::QPlastiqueStylePrivate(QPlastiqueStyle *qq) :
#ifndef QT_NO_PROGRESSBAR
    progressBarAnimateTimer(0), animateStep(0),
#endif
    q(qq)
{
}

/*!
  \internal
 */
QPlastiqueStylePrivate::~QPlastiqueStylePrivate()
{
}

/*!
    \class QPlastiqueStyle
    \brief The QPlastiqueStyle class provides a widget style similar to the
    Plastik style available in KDE.

    The Plastique style provides a default look and feel for widgets on X11
    that closely resembles the Plastik style, introduced by Sandro Giessl in
    KDE 3.2.

    \img qplastiquestyle.png
    \sa QWindowsXPStyle, QMacStyle, QWindowsStyle, QCDEStyle, QMotifStyle
*/

/*!
    Constructs a QPlastiqueStyle object.
*/
QPlastiqueStyle::QPlastiqueStyle()
    : QWindowsStyle(), d(new QPlastiqueStylePrivate(this))
{
}

/*!
    Destructs the QPlastiqueStyle object.
*/
QPlastiqueStyle::~QPlastiqueStyle()
{
    delete d;
}

/*!
  \reimp
*/
void QPlastiqueStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option,
                                    QPainter *painter, const QWidget *widget) const
{
    Q_ASSERT(option);

    QColor borderColor = option->palette.background().color().dark(178);
    QColor gradientStartColor = option->palette.button().color().light(104);
    QColor gradientStopColor = option->palette.button().color().dark(105);

    QColor baseGradientStartColor = option->palette.base().color().dark(101);
    QColor baseGradientStopColor = option->palette.base().color().dark(106);

    QColor highlightedGradientStartColor = option->palette.button().color().light(101);
    QColor highlightedGradientStopColor = mergedColors(option->palette.button().color(), option->palette.highlight().color(), 85);

    QColor highlightedBaseGradientStartColor = option->palette.base().color();
    QColor highlightedBaseGradientStopColor = mergedColors(option->palette.base().color().dark(105), option->palette.highlight().color(), 70);

    QColor highlightedDarkInnerBorderColor = mergedColors(option->palette.button().color(), option->palette.highlight().color(), 35);
    QColor highlightedLightInnerBorderColor = mergedColors(option->palette.button().color(), option->palette.highlight().color(), 58);

    QColor alphaCornerColor;
    if (widget) {
        // ### backgroundrole/foregroundrole should be part of the style option
        alphaCornerColor = mergedColors(option->palette.color(widget->backgroundRole()), borderColor);
    } else {
        alphaCornerColor = mergedColors(option->palette.background().color(), borderColor);
    }
    QColor alphaInnerColor = mergedColors(highlightedLightInnerBorderColor, gradientStartColor);

    QColor alphaInnerColorNoHover = mergedColors(borderColor, gradientStartColor);
    QColor alphaTextColor = mergedColors(option->palette.background().color(), option->palette.text().color());

    QColor alphaLightTextColor = mergedColors(option->palette.background().color().light(250), option->palette.text().color().light(250));

    QColor lightShadow = option->palette.button().color().light(105);

    QColor shadowGradientStartColor = option->palette.button().color().dark(115);
    QColor shadow = shadowGradientStartColor;

    switch (element) {
    case PE_IndicatorButtonDropDown:
        drawPrimitive(PE_PanelButtonTool, option, painter, widget);
        break;
    case PE_FrameDefaultButton:
        // Draws the frame around a default button (drawn in
        // PE_PanelButtonCommand).
        break;
#ifndef QT_NO_TABWIDGET
    case PE_FrameTabWidget:
        if (const QStyleOptionTabWidgetFrame *twf = qstyleoption_cast<const QStyleOptionTabWidgetFrame *>(option)) {
            if (twf->shape != QTabBar::RoundedNorth && twf->shape != QTabBar::RoundedWest &&
                twf->shape != QTabBar::RoundedSouth && twf->shape != QTabBar::RoundedEast) {
                QWindowsStyle::drawPrimitive(element, option, painter, widget);
                break;
            }

            int borderThickness = pixelMetric(PM_TabBarBaseOverlap, twf, widget);
            bool reverse = (twf->direction == Qt::RightToLeft);

            painter->save();

            QRect tabBarRect;
            switch (twf->shape) {
            case QTabBar::RoundedNorth:
                if (reverse)
                    tabBarRect = QRect(twf->rect.right() - twf->leftCornerWidgetSize.width() - twf->tabBarSize.width() + 1, twf->rect.top(), twf->tabBarSize.width(), borderThickness);
                else
                    tabBarRect = QRect(twf->rect.left() + twf->leftCornerWidgetSize.width(), twf->rect.top(), twf->tabBarSize.width(), borderThickness);
                break ;
            case QTabBar::RoundedWest:
                tabBarRect = QRect(twf->rect.left(), twf->rect.top() + twf->leftCornerWidgetSize.height(), borderThickness, twf->tabBarSize.height());
                break ;
            case QTabBar::RoundedEast:
                tabBarRect = QRect(twf->rect.right() - borderThickness + 1, twf->rect.top()  + twf->leftCornerWidgetSize.height(),
                                   borderThickness, twf->tabBarSize.height());
                break ;
            case QTabBar::RoundedSouth:
                if (reverse)
                    tabBarRect = QRect(twf->rect.right() - twf->leftCornerWidgetSize.width() - twf->tabBarSize.width() + 1,
                                       twf->rect.bottom() - borderThickness + 1, twf->tabBarSize.width(), borderThickness);
                else
                    tabBarRect = QRect(twf->rect.left() + twf->leftCornerWidgetSize.width(),
                                       twf->rect.bottom() - borderThickness + 1, twf->tabBarSize.width(), borderThickness);
                break ;
            default:
                break;
            }

            QRegion region(twf->rect);
            region -= tabBarRect;
            painter->setClipRegion(region);

            // Outer border
            QLine leftLine = QLine(twf->rect.topLeft() + QPoint(0, 2), twf->rect.bottomLeft() - QPoint(0, 2));
            QLine rightLine = QLine(twf->rect.topRight() + QPoint(0, 2), twf->rect.bottomRight() - QPoint(0, 2));
            QLine bottomLine = QLine(twf->rect.bottomLeft() + QPoint(2, 0), twf->rect.bottomRight() - QPoint(2, 0));
            QLine topLine = QLine(twf->rect.topLeft() + QPoint(2, 0), twf->rect.topRight() - QPoint(2, 0));

            painter->setPen(borderColor);
            painter->drawLine(topLine);

            // Inner border
            QLine innerLeftLine = QLine(leftLine.p1() + QPoint(1, 0), leftLine.p2() + QPoint(1, 0));
            QLine innerRightLine = QLine(rightLine.p1() - QPoint(1, 0), rightLine.p2() - QPoint(1, 0));
            QLine innerBottomLine = QLine(bottomLine.p1() - QPoint(0, 1), bottomLine.p2() - QPoint(0, 1));
            QLine innerTopLine = QLine(topLine.p1() + QPoint(0, 1), topLine.p2() + QPoint(0, 1));

            // Rounded Corner