qworkspace.cpp

奇趣公司比较新的qt/emd版本

void QWorkspaceTitleBar::mousePressEvent(QMouseEvent *e)
{
    Q_D(QWorkspaceTitleBar);
    if (!d->act)
        emit doActivate();
    if (e->button() == Qt::LeftButton) {
        if (style()->styleHint(QStyle::SH_TitleBar_NoBorder, 0, 0)
            && !rect().adjusted(5, 5, -5, 0).contains(e->pos())) {
            // propagate border events to the QWidgetResizeHandler
            e->ignore();
            return;
        }

        d->pressed = true;
        QStyleOptionTitleBar opt;
        initStyleOption(&opt);
        QStyle::SubControl ctrl = style()->hitTestComplexControl(QStyle::CC_TitleBar, &opt,
                                                                 e->pos(), this);
        switch (ctrl) {
        case QStyle::SC_TitleBarSysMenu:
            if (d->flags & Qt::WindowSystemMenuHint) {
                d->buttonDown = QStyle::SC_None;
                static QTime *t = 0;
                static QWorkspaceTitleBar *tc = 0;
                if (!t)
                    t = new QTime;
                if (tc != this || t->elapsed() > QApplication::doubleClickInterval()) {
                    emit showOperationMenu();
                    t->start();
                    tc = this;
                } else {
                    tc = 0;
                    emit doClose();
                    return;
                }
            }
            break;

        case QStyle::SC_TitleBarShadeButton:
        case QStyle::SC_TitleBarUnshadeButton:
            if (d->flags & Qt::WindowShadeButtonHint)
                d->buttonDown = ctrl;
            break;

        case QStyle::SC_TitleBarNormalButton:
                d->buttonDown = ctrl;
            break;

        case QStyle::SC_TitleBarMinButton:
            if (d->flags & Qt::WindowMinimizeButtonHint)
                d->buttonDown = ctrl;
            break;

        case QStyle::SC_TitleBarMaxButton:
            if (d->flags & Qt::WindowMaximizeButtonHint)
                d->buttonDown = ctrl;
            break;

        case QStyle::SC_TitleBarCloseButton:
            if (d->flags & Qt::WindowSystemMenuHint)
                d->buttonDown = ctrl;
            break;

        case QStyle::SC_TitleBarLabel:
            d->buttonDown = ctrl;
            d->moveOffset = mapToParent(e->pos());
            break;

        default:
            break;
        }
        update();
    } else {
        d->pressed = false;
    }
}

void QWorkspaceTitleBar::contextMenuEvent(QContextMenuEvent *e)
{
    QStyleOptionTitleBar opt;
    initStyleOption(&opt);
    QStyle::SubControl ctrl = style()->hitTestComplexControl(QStyle::CC_TitleBar, &opt, e->pos(),
                                                             this);
    if(ctrl == QStyle::SC_TitleBarLabel || ctrl == QStyle::SC_TitleBarSysMenu) {
        e->accept();
        emit popupOperationMenu(e->globalPos());
    } else {
        e->ignore();
    }
}

void QWorkspaceTitleBar::mouseReleaseEvent(QMouseEvent *e)
{
    Q_D(QWorkspaceTitleBar);
    if (!d->window) {
        // could have been deleted as part of a double click event on the sysmenu
        return;
    }
    if (e->button() == Qt::LeftButton && d->pressed) {
        if (style()->styleHint(QStyle::SH_TitleBar_NoBorder, 0, 0)
            && !rect().adjusted(5, 5, -5, 0).contains(e->pos())) {
            // propagate border events to the QWidgetResizeHandler
            e->ignore();
            d->buttonDown = QStyle::SC_None;
            d->pressed = false;
            return;
        }
        e->accept();
        QStyleOptionTitleBar opt;
        initStyleOption(&opt);
        QStyle::SubControl ctrl = style()->hitTestComplexControl(QStyle::CC_TitleBar, &opt,
                                                                 e->pos(), this);

        if (d->pressed) {
            update();
            d->pressed = false;
            d->moving = false;
        }
        if (ctrl == d->buttonDown) {
            d->buttonDown = QStyle::SC_None;
            switch(ctrl) {
            case QStyle::SC_TitleBarShadeButton:
            case QStyle::SC_TitleBarUnshadeButton:
                if(d->flags & Qt::WindowShadeButtonHint)
                    emit doShade();
                break;

            case QStyle::SC_TitleBarNormalButton:
                if(d->flags & Qt::WindowMinMaxButtonsHint)
                    emit doNormal();
                break;

            case QStyle::SC_TitleBarMinButton:
                if(d->flags & Qt::WindowMinimizeButtonHint) {
                    if (d->window && d->window->isMinimized())
                        emit doNormal();
                    else
                        emit doMinimize();
                }
                break;

            case QStyle::SC_TitleBarMaxButton:
                if(d->flags & Qt::WindowMaximizeButtonHint) {
                    if(d->window && d->window->isMaximized())
                        emit doNormal();
                    else
                        emit doMaximize();
                }
                break;

            case QStyle::SC_TitleBarCloseButton:
                if(d->flags & Qt::WindowSystemMenuHint) {
                    d->buttonDown = QStyle::SC_None;
                    emit doClose();
                    return;
                }
                break;

            default:
                break;
            }
        }
    } else {
        e->ignore();
    }
}

void QWorkspaceTitleBar::mouseMoveEvent(QMouseEvent *e)
{
    Q_D(QWorkspaceTitleBar);
    e->ignore();
    if ((e->buttons() & Qt::LeftButton) && style()->styleHint(QStyle::SH_TitleBar_NoBorder, 0, 0)
        && !rect().adjusted(5, 5, -5, 0).contains(e->pos()) && !d->pressed) {
        // propagate border events to the QWidgetResizeHandler
        return;
    }

    QStyleOptionTitleBar opt;
    initStyleOption(&opt);
    QStyle::SubControl under_mouse = style()->hitTestComplexControl(QStyle::CC_TitleBar, &opt,
                                                                    e->pos(), this);
    if(under_mouse != d->lastControl) {
        d->lastControl = under_mouse;
        update();
    }

    switch (d->buttonDown) {
    case QStyle::SC_None:
        break;
    case QStyle::SC_TitleBarSysMenu:
        break;
    case QStyle::SC_TitleBarLabel:
        if (d->buttonDown == QStyle::SC_TitleBarLabel && d->movable && d->pressed) {
            if (d->moving || (d->moveOffset - mapToParent(e->pos())).manhattanLength() >= 4) {
                d->moving = true;
                QPoint p = mapFromGlobal(e->globalPos());

                QWidget *parent = d->window ? d->window->parentWidget() : 0;
                if(parent && parent->inherits("QWorkspaceChild")) {
                    QWidget *workspace = parent->parentWidget();
                    p = workspace->mapFromGlobal(e->globalPos());
                    if (!workspace->rect().contains(p)) {
                        if (p.x() < 0)
                            p.rx() = 0;
                        if (p.y() < 0)
                            p.ry() = 0;
                        if (p.x() > workspace->width())
                            p.rx() = workspace->width();
                        if (p.y() > workspace->height())
                            p.ry() = workspace->height();
                    }
                }

                QPoint pp = p - d->moveOffset;
                if (!parentWidget()->isMaximized())
                    parentWidget()->move(pp);
            }
        }
        e->accept();
        break;
    default:
        break;
    }
}

bool QWorkspaceTitleBar::isTool() const
{
    Q_D(const QWorkspaceTitleBar);
    return (d->flags & Qt::WindowType_Mask) == Qt::Tool;
}

// from qwidget.cpp
extern QString qt_setWindowTitle_helperHelper(const QString &, QWidget*);

void QWorkspaceTitleBar::paintEvent(QPaintEvent *)
{
    Q_D(QWorkspaceTitleBar);
    QStyleOptionTitleBar opt;
    initStyleOption(&opt);
    opt.subControls = QStyle::SC_TitleBarLabel;
    opt.activeSubControls = d->buttonDown;

    if (d->window && (d->flags & Qt::WindowTitleHint)) {
        QString title = qt_setWindowTitle_helperHelper(opt.text, d->window);
        int maxw = style()->subControlRect(QStyle::CC_TitleBar, &opt, QStyle::SC_TitleBarLabel,
                                       this).width();
        opt.text = fontMetrics().elidedText(title, Qt::ElideRight, maxw);
    }

    if (d->flags & Qt::WindowSystemMenuHint) {
        opt.subControls |= QStyle::SC_TitleBarSysMenu | QStyle::SC_TitleBarCloseButton;
        if (d->window && (d->flags & Qt::WindowShadeButtonHint)) {
            if (d->window->isMinimized())
                opt.subControls |= QStyle::SC_TitleBarUnshadeButton;
            else
                opt.subControls |= QStyle::SC_TitleBarShadeButton;
        }
        if (d->window && (d->flags & Qt::WindowMinMaxButtonsHint)) {
            if(d->window && d->window->isMinimized())
                opt.subControls |= QStyle::SC_TitleBarNormalButton;
            else
                opt.subControls |= QStyle::SC_TitleBarMinButton;
        }
        if (d->window && (d->flags & Qt::WindowMaximizeButtonHint) && !d->window->isMaximized())
            opt.subControls |= QStyle::SC_TitleBarMaxButton;
    }

    QStyle::SubControl under_mouse = QStyle::SC_None;
    under_mouse = style()->hitTestComplexControl(QStyle::CC_TitleBar, &opt,
                                                     mapFromGlobal(QCursor::pos()), this);
    if ((d->buttonDown == under_mouse) && d->pressed) {
        opt.state |= QStyle::State_Sunken;
    } else if( autoRaise() && under_mouse != QStyle::SC_None && !d->pressed) {
        opt.activeSubControls = under_mouse;
        opt.state |= QStyle::State_MouseOver;
    }
    opt.palette.setCurrentColorGroup(usesActiveColor() ? QPalette::Active : QPalette::Inactive);

    QPainter p(this);
    style()->drawComplexControl(QStyle::CC_TitleBar, &opt, &p, this);
}

void QWorkspaceTitleBar::mouseDoubleClickEvent(QMouseEvent *e)
{
    Q_D(QWorkspaceTitleBar);
    if (e->button() != Qt::LeftButton) {
        e->ignore();
        return;
    }
    e->accept();
    QStyleOptionTitleBar opt;
    initStyleOption(&opt);
    switch (style()->hitTestComplexControl(QStyle::CC_TitleBar, &opt, e->pos(), this)) {
    case QStyle::SC_TitleBarLabel:
        emit doubleClicked();
        break;

    case QStyle::SC_TitleBarSysMenu:
        if (d->flags & Qt::WindowSystemMenuHint)
            emit doClose();
        break;

    default:
        break;
    }
}

void QWorkspaceTitleBar::leaveEvent(QEvent *)
{
    Q_D(QWorkspaceTitleBar);
    d->lastControl = QStyle::SC_None;
    if(autoRaise() && !d->pressed)
        update();
}

void QWorkspaceTitleBar::enterEvent(QEvent *)
{
    Q_D(QWorkspaceTitleBar);
    if(autoRaise() && !d->pressed)
        update();
    QEvent e(QEvent::Leave);
    QApplication::sendEvent(parentWidget(), &e);
}

void QWorkspaceTitleBar::setActive(bool active)
{
    Q_D(QWorkspaceTitleBar);
    if (d->act == active)
        return ;

    d->act = active;
    update();
}

bool QWorkspaceTitleBar::isActive() const
{
    Q_D(const QWorkspaceTitleBar);
    return d->act;
}

bool QWorkspaceTitleBar::usesActiveColor() const
{
    return (isActive() && isActiveWindow()) ||
        (!window() && QWidget::window()->isActiveWindow());
}

QWidget *QWorkspaceTitleBar::window() const
{
    Q_D(const QWorkspaceTitleBar);
    return d->window;
}

bool QWorkspaceTitleBar::event(QEvent *e)
{
    Q_D(QWorkspaceTitleBar);
    if (e->type() == QEvent::ApplicationPaletteChange) {
        d->readColors();
    } else if (e->type() == QEvent::WindowActivate
               || e->type() == QEvent::WindowDeactivate) {
        if (d->act)
            update();
    }
    return QWidget::event(e);
}

void QWorkspaceTitleBar::setMovable(bool b)
{
    Q_D(QWorkspaceTitleBar);
    d->movable = b;
}

bool QWorkspaceTitleBar::isMovable() const
{
    Q_D(const QWorkspaceTitleBar);
    return d->movable;
}

void QWorkspaceTitleBar::setAutoRaise(bool b)
{
    Q_D(QWorkspaceTitleBar);
    d->autoraise = b;
}

bool QWorkspaceTitleBar::autoRaise() const
{
    Q_D(const QWorkspaceTitleBar);
    return d->autoraise;
}

QSize QWorkspaceTitleBar::sizeHint() const
{
    ensurePolished();
    QStyleOptionTitleBar opt;
    initStyleOption(&opt);
    QRect menur = style()->subControlRect(QStyle::CC_TitleBar, &opt,
                                          QStyle::SC_TitleBarSysMenu, this);
    return QSize(menur.width(), style()->pixelMetric(QStyle::PM_TitleBarHeight, &opt, this));
}

/*!
    \class QWorkspace
    \obsolete
    \brief The QWorkspace widget provides a workspace window that can be
    used in an MDI application.
    \ingroup application

    This class is deprecated. Use QMdiArea instead.

    Multiple Document Interface (MDI) applications are typically
    composed of a main window containing a menu bar, a toolbar, and
    a central QWorkspace widget. The workspace itself is used to display
    a number of child windows, each of which is a widget.

    The workspace itself is an ordinary Qt widget. It has a standard
    constructor that takes a parent widget.
    Workspaces can be placed in any layout, but are typically given
    as the central widget in a QMainWindow:

    \code
    MainWindow::MainWindow()
    {
        workspace = new QWorkspace;
        setCentralWidget(workspace);