q3groupbox.cpp

奇趣公司比较新的qt/emd版本

        }
    }
}

/*!\reimp */
void Q3GroupBox::childEvent(QChildEvent *c)
{
    QGroupBox::childEvent(c);
    if (!c->inserted() || !c->child()->isWidgetType())
        return;
    if (d->grid) {
        insertWid((QWidget*)c->child());
    }
}

void Q3GroupBox::insertWid(QWidget* w)
{
    if (d->row >= d->nRows || d->col >= d->nCols)
        d->grid->expand(d->row+1, d->col+1);
    d->grid->addWidget(w, d->row, d->col);
    skip();
}


void Q3GroupBox::skip()
{
    // Same as QGrid::skip()
    if (d->dir == Qt::Horizontal) {
        if (d->col+1 < d->nCols) {
            d->col++;
        } else {
            d->col = 0;
            d->row++;
        }
    } else { //Vertical
        if (d->row+1 < d->nRows) {
            d->row++;
        } else {
            d->row = 0;
            d->col++;
        }
    }
}


/*! \reimp */
void Q3GroupBox::changeEvent(QEvent *ev)
{
    QGroupBox::changeEvent(ev);
}

/*! \reimp */
bool Q3GroupBox::event(QEvent *e)
{
    if (e->type()==QEvent::Paint)
    {
        QStyleOptionGroupBox opt;
        initStyleOption(&opt);
        opt.lineWidth=d->lineWidth;
        opt.midLineWidth=d->midLineWidth;
        QPainter p(this);
        if (frameShape()==GroupBoxPanel)
        {
            style()->drawComplexControl(QStyle::CC_GroupBox, &opt, &p, this);
        }
        else {
            //in case it is a Paint event with a frame shape different from the group box
            const QRect textRect = style()->subControlRect(QStyle::CC_GroupBox, &opt, QStyle::SC_GroupBoxLabel, this);
            const QRect checkBoxRect = style()->subControlRect(QStyle::CC_GroupBox, &opt, QStyle::SC_GroupBoxCheckBox, this);

            // Draw title
            if ((opt.subControls & QStyle::SC_GroupBoxLabel) && !opt.text.isEmpty()) {
                QColor textColor = opt.textColor;
                if (textColor.isValid())
                    p.setPen(textColor);
                int alignment = int(opt.textAlignment);
                if (!style()->styleHint(QStyle::SH_UnderlineShortcut, &opt, this))
                    alignment |= Qt::TextHideMnemonic;

                style()->drawItemText(&p, textRect,  Qt::TextShowMnemonic | Qt::AlignHCenter | alignment,
                    opt.palette, opt.state & QStyle::State_Enabled, opt.text,
                    textColor.isValid() ? QPalette::NoRole : QPalette::WindowText);

                if (opt.state & QStyle::State_HasFocus) {
                    QStyleOptionFocusRect fropt;
                    fropt.QStyleOption::operator=(opt);
                    fropt.rect = textRect;
                    style()->drawPrimitive(QStyle::PE_FrameFocusRect, &fropt, &p, this);
                }
            }

            // Draw checkbox
            if (opt.subControls & QStyle::SC_GroupBoxCheckBox) {
                QStyleOptionButton box;
                box.QStyleOption::operator=(opt);
                box.rect = checkBoxRect;
                style()->drawPrimitive(QStyle::PE_IndicatorCheckBox, &box, &p, this);
            }

            //sets clipping
            QRegion region(rect());
            if (!title().isEmpty()) {
                bool ltr = layoutDirection() == Qt::LeftToRight;
                QRect finalRect = checkBoxRect.united(textRect);
                if (isCheckable())
                    finalRect.adjust(ltr ? -4 : 0, 0, ltr ? 0 : 4, 0);
                region -= finalRect;
            }
            p.setClipRegion(region);

            drawFrame(&p);
        }
        return false;
    }
    return QGroupBox::event(e);
}

/*!
    \fn void Q3GroupBox::drawFrame(QPainter *p)
    \internal
*/

void Q3GroupBox::drawFrame(QPainter *p)
{
    QPoint      p1, p2;
    QStyleOptionFrame opt;
    opt.init(this);

    int frameShape  = d->frameStyle & QFrame::Shape_Mask;
    int frameShadow = d->frameStyle & QFrame::Shadow_Mask;

    int lw = 0;
    int mlw = 0;
    opt.rect = frameRect();

    switch (frameShape) {
    case QFrame::Box:
    case QFrame::HLine:
    case QFrame::VLine:
    case QFrame::StyledPanel:
        lw = d->lineWidth;
        mlw = d->midLineWidth;
        break;
    default:
        // most frame styles do not handle customized line and midline widths
        // (see updateFrameWidth()).
        lw = d->frameWidth;
        break;
    }
    opt.lineWidth = lw;
    opt.midLineWidth = mlw;
    if (frameShadow == Sunken)
        opt.state |= QStyle::State_Sunken;
    else if (frameShadow == Raised)
        opt.state |= QStyle::State_Raised;

    switch (frameShape) {
    case Box:
        if (frameShadow == Plain)
            qDrawPlainRect(p, opt.rect, opt.palette.foreground().color(), lw);
        else
            qDrawShadeRect(p, opt.rect, opt.palette, frameShadow == Sunken, lw, mlw);
        break;

    case StyledPanel:
        style()->drawPrimitive(QStyle::PE_Frame, &opt, p, this);
        break;

    case Panel:
        if (frameShadow == Plain)
            qDrawPlainRect(p, opt.rect, opt.palette.foreground().color(), lw);
        else
            qDrawShadePanel(p, opt.rect, opt.palette, frameShadow == Sunken, lw);
        break;

    case WinPanel:
        if (frameShadow == Plain)
            qDrawPlainRect(p, opt.rect, opt.palette.foreground().color(), lw);
        else
            qDrawWinPanel(p, opt.rect, opt.palette, frameShadow == Sunken);
        break;
    case HLine:
    case VLine:
        if (frameShape == HLine) {
            p1 = QPoint(opt.rect.x(), opt.rect.height() / 2);
            p2 = QPoint(opt.rect.x() + opt.rect.width(), p1.y());
        } else {
            p1 = QPoint(opt.rect.x()+opt.rect.width() / 2, 0);
            p2 = QPoint(p1.x(), opt.rect.height());
        }
        if (frameShadow == Plain) {
            QPen oldPen = p->pen();
            p->setPen(QPen(opt.palette.foreground().color(), lw));
            p->drawLine(p1, p2);
            p->setPen(oldPen);
        } else {
            qDrawShadeLine(p, p1, p2, opt.palette, frameShadow == Sunken, lw, mlw);
        }
        break;
    }

#ifdef QT_KEYPAD_NAVIGATION
    if (QApplication::keypadNavigationEnabled() && hasFocus()) {
        QStyleOptionFocusRect fopt;
        fopt.init(this);
        fopt.state |= QStyle::State_KeyboardFocusChange;
        fopt.rect = frameRect();
        style()->drawPrimitive(QStyle::PE_FrameFocusRect, &fopt, p, this);
    }
#endif
}

/*!
    \property Q3GroupBox::frameShadow
    \brief the frame shadow value from the frame style

    \sa frameStyle() 
*/

/*
    \enum Q3GroupBox::FrameShape
    
    This enum defines the available frame shapes a group box can
    have. All values have equivalents in QFrame.

    \value Box QFrame::Box
    \value Sunken QFrame::Sunken
    \value Plain QFrame::Plain
    \value Raised QFrame::Raised
    \value MShadow QFrame::Shadow_Mask
    \value NoFrame QFrame::NoFrame
    \value Panel QFrame::Panel
    \value StyledPanel QFrame::StyledPanel
    \value HLine QFrame::HLine
    \value VLine QFrame::VLine
    \value WinPanel QFrame::WinPanel
    \value ToolBarPanel QFrame::StyledPanel
    \value MenuBarPanel = QFrame::StyledPanel
    \value PopupPanel QFrame::StyledPanel
    \value LineEditPanel QFrame::StyledPanel
    \value TabWidgetPanel QFrame::StyledPanel
    \value GroupBoxPanel 0x0007
    \value MShape QFrame::Shape_Mask
*/


void Q3GroupBox::setFrameShadow(DummyFrame s)
{
    setFrameStyle((d->frameStyle & MShape) | s);
}

Q3GroupBox::DummyFrame Q3GroupBox::frameShadow() const
{
    return (DummyFrame) (d->frameStyle & MShadow);
}

/*!
    \property Q3GroupBox::frameShape
    \brief the frame shape value from the frame style

    \sa frameStyle(), frameShadow()
*/

void Q3GroupBox::setFrameShape(DummyFrame s)
{
    setFrameStyle((d->frameStyle & MShadow) | s);
}

Q3GroupBox::DummyFrame Q3GroupBox::frameShape() const
{
    return (DummyFrame) (d->frameStyle & MShape);
}

/*!
    \fn void Q3GroupBox::setFrameStyle(int style)
    
    Sets the frame style to \a style.  The style is the bitwise OR
    between a frame shape and a frame shadow style.
*/

void Q3GroupBox::setFrameStyle(int style)
{
    if (!testAttribute(Qt::WA_WState_OwnSizePolicy)) {
        switch (style & MShape) {
        case HLine:
            setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed);
            break;
        case VLine:
            setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Minimum);
            break;
        default:
            if ((d->frameStyle & MShape) == HLine || (d->frameStyle & MShape) == VLine)
                setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
        }
        setAttribute(Qt::WA_WState_OwnSizePolicy, false);
    }
    d->frameStyle = style;
    update();
    d->updateFrameWidth();
    d->oldFrameStyle = style;
}

/*!
    \fn int Q3GroupBox::frameStyle() const
    
    Returns the frame style.
*/

int Q3GroupBox::frameStyle() const
{
    return d->frameStyle;
}

/*!
    \property Q3GroupBox::lineWidth
    \brief This property holds the width of the line.

    \sa frameStyle(), frameShadow()
*/

void Q3GroupBox::setLineWidth(int w) 
{
    if (short(w) == d->lineWidth)
        return;
    d->lineWidth = short(w);
    d->updateFrameWidth();
}

int Q3GroupBox::lineWidth() const
{
    return d->lineWidth;
}    

/*!
    \property Q3GroupBox::midLineWidth
    \brief This property holds the width of the mid-line.

    \sa frameStyle(), frameShadow()
*/

void Q3GroupBox::setMidLineWidth(int w)
{
    if (short(w) == d->midLineWidth)
        return;
    d->midLineWidth = short(w);
    d->updateFrameWidth();
}

int Q3GroupBox::midLineWidth() const
{
    return d->midLineWidth;
}

/*!
    \property Q3GroupBox::frameRect
    \brief the bounding rectangle of the frame of the group box.
*/

/*!
    \fn QRect Q3GroupBox::frameRect() const
    \internal
*/

QRect Q3GroupBox::frameRect() const
{
    QStyleOptionGroupBox opt;
    initStyleOption(&opt);
    QRect fr = style()->subControlRect(QStyle::CC_GroupBox, &opt, QStyle::SC_GroupBoxFrame, this);
    return fr;
}

/*!
    \fn void Q3GroupBox::setFrameRect(QRect)
    \internal
*/

void Q3GroupBox::setFrameRect(QRect r)
{
    QRect cr = r.isValid() ? r : rect();
    if ((d->frameStyle & QFrame::Shape_Mask) == StyledPanel) {
        cr.adjust(d->leftFrameWidth, d->topFrameWidth, -d->rightFrameWidth, -d->bottomFrameWidth);
    } else
        cr.adjust(d->frameWidth, d->frameWidth, -d->frameWidth, -d->frameWidth);
    setContentsMargins(cr.left(), cr.top(), rect().right() - cr.right(), rect().bottom() - cr.bottom());
}

/*!
    \fn int Q3GroupBox::frameWidth() const
    \internal
*/

int Q3GroupBox::frameWidth() const
{
    return d->frameWidth;
}

#if defined(Q_MOC_RUN)
/*!
    \enum Q3GroupBox::FrameShape
    \internal

    \value Box
    \value Sunken
    \value Plain
    \value Raised
    \value MShadow
    \value NoFrame
    \value Panel 
    \value StyledPanel
    \value HLine 
    \value VLine 
    \value GroupBoxPanel
    \value WinPanel 
    \value ToolBarPanel 
    \value MenuBarPanel 
    \value PopupPanel 
    \value LineEditPanel 
    \value TabWidgetPanel 
    \value MShape
*/
#else
/*!
    \enum Q3GroupBox::DummyFrame
    \internal

    \value Box
    \value Sunken
    \value Plain
    \value Raised
    \value MShadow
    \value NoFrame
    \value Panel 
    \value StyledPanel
    \value HLine 
    \value VLine 
    \value GroupBoxPanel
    \value WinPanel 
    \value ToolBarPanel 
    \value MenuBarPanel 
    \value PopupPanel 
    \value LineEditPanel 
    \value TabWidgetPanel 
    \value MShape
*/
#endif

/*!
    \typedef Q3GroupBox::FrameShape
    \internal 
*/

/*!
    \property Q3GroupBox::margin
    \brief the width of the margin around the contents of the
           group box.
*/

/*!
    \fn void Q3GroupBox::setMargin(int margin)
    \since 4.2

    Sets the width of the margin around the contents of the widget to \a margin.
    
    This function uses QWidget::setContentsMargins() to set the margin.
    \sa margin(), QWidget::setContentsMargins()
*/

/*!
    \fn int Q3GroupBox::margin() const 
    \since 4.2

    Returns the width of the the margin around the contents of the widget.
    
    This function uses QWidget::getContentsMargins() to get the margin.
    \sa setMargin(), QWidget::getContentsMargins()
*/