qwidget_qws.cpp

奇趣公司比较新的qt/emd版本

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#include "qcursor.h"
#include "qapplication.h"
#include "qapplication_p.h"
#include "qpainter.h"
#include "qbitmap.h"
#include "qimage.h"
#include "qhash.h"
#include "qstack.h"
#include "qlayout.h"
#include "qtextcodec.h"
#include "qinputcontext.h"
#include "qdesktopwidget.h"

#include "qwsdisplay_qws.h"
#include "private/qwsdisplay_qws_p.h"
#include "qscreen_qws.h"
#include "qwsmanager_qws.h"
#include <private/qwsmanager_p.h>
#include <private/qbackingstore_p.h>
#include <private/qwindowsurface_qws_p.h>
#include <private/qwslock_p.h>
#include "qpaintengine.h"

#include "qdebug.h"

#include "qwidget_p.h"

extern int *qt_last_x;
extern int *qt_last_y;
extern WId qt_last_cursor;
extern bool qws_overrideCursor;
extern QWidget *qt_pressGrab;
extern QWidget *qt_mouseGrb;

static QWidget *keyboardGrb = 0;

static int takeLocalId()
{
    static int n=-1000;
    return --n;
}

class QWSServer;
extern QWSServer *qwsServer;

static inline bool isServerProcess()
{
    return (qwsServer != 0);
}

/*****************************************************************************
  QWidget member functions
 *****************************************************************************/

void QWidgetPrivate::create_sys(WId window, bool initializeWindow, bool /*destroyOldWindow*/)
{
    Q_Q(QWidget);
    Qt::WindowType type = q->windowType();
    Qt::WindowFlags flags = data.window_flags;
    QWidget *parentWidget = q->parentWidget();

    data.alloc_region_index = -1;

    // we don't have a "Drawer" window type
    if (type == Qt::Drawer) {
        type = Qt::Widget;
        flags &= ~Qt::WindowType_Mask;
    }


    bool topLevel = (flags & Qt::Window);
    bool popup = (type == Qt::Popup);
    bool dialog = (type == Qt::Dialog
                   || type == Qt::Sheet
                   || (flags & Qt::MSWindowsFixedSizeDialogHint));
    bool desktop = (type == Qt::Desktop);
    bool tool = (type == Qt::Tool || type == Qt::SplashScreen || type == Qt::ToolTip);

#ifndef QT_NO_WARNING_OUTPUT
    static bool toolWarningShown = false;
    if (!toolWarningShown && type == Qt::Tool && !(flags & Qt::FramelessWindowHint)) {
        qWarning("Qtopia Core " QT_VERSION_STR " does not support tool windows with frames.\n"
                 "This behavior will change in a later release. To ensure compatibility with\n"
                 "future versions, use (Qt::Tool | Qt::FramelessWindowHint).");
        toolWarningShown = true;
    }
#endif

    // a popup stays on top
    if (popup)
        flags |= Qt::WindowStaysOnTopHint;

    WId           id;
    QWSDisplay* dpy = QWidget::qwsDisplay();

    if (!window)                                // always initialize
        initializeWindow = true;

    if(topLevel && parentWidget) { // if our parent stays on top, so must we
        QWidget *ptl = parentWidget->window();
        if(ptl && (ptl->windowFlags() & Qt::WindowStaysOnTopHint))
            flags |= Qt::WindowStaysOnTopHint;
    }

    int sw = dpy->width();
    int sh = dpy->height();
    if (desktop) {                                // desktop widget
        dialog = popup = false;                        // force these flags off
        data.crect.setRect(0, 0, sw, sh);
    } else if (topLevel && !q->testAttribute(Qt::WA_Resized)) {
        data.crect.setSize(QSize(sw/2, 4*sh/10));
    }

    if (window) {                                // override the old window
        id = window;
        setWinId(window);
    } else if (desktop) {                        // desktop widget
        id = (WId)-2;                                // id = root window
#if 0
        QWidget *otherDesktop = q->find(id);        // is there another desktop?
        if (otherDesktop && otherDesktop->testWFlags(Qt::WPaintDesktop)) {
            otherDesktop->d_func()->setWinId(0);        // remove id from widget mapper
            setWinId(id);                        // make sure otherDesktop is
            otherDesktop->d_func()->setWinId(id);        //   found first
        } else
#endif
        {
            setWinId(id);
        }
    } else {
        id = topLevel ? dpy->takeId() : takeLocalId();
        setWinId(id);                                // set widget id/handle + hd
    }


    bool hasFrame = true;
    if (topLevel) {
        if (desktop || popup || tool)
            hasFrame = false;
        else
            hasFrame = !(flags & Qt::FramelessWindowHint);
    }
    if (desktop) {
        q->setAttribute(Qt::WA_WState_Visible);
    } else if (topLevel) {                        // set X cursor
        //QCursor *oc = QApplication::overrideCursor();
        if (initializeWindow) {
            //XXX XDefineCursor(dpy, winid, oc ? oc->handle() : cursor().handle());
        }
        QWidget::qwsDisplay()->nameRegion(q->internalWinId(), q->objectName(), q->windowTitle());
    }

    if (topLevel) {
        createTLExtra();
        QTLWExtra *topextra = extra->topextra;
#ifndef QT_NO_QWS_MANAGER
        if (hasFrame) {
            // get size of wm decoration and make the old crect the new frect
            QRect cr = data.crect;
            QRegion r = QApplication::qwsDecoration().region(q, cr) | cr;
            QRect br(r.boundingRect());
            topextra->frameStrut.setCoords(cr.x() - br.x(),
                                                  cr.y() - br.y(),
                                                  br.right() - cr.right(),
                                                  br.bottom() - cr.bottom());
            if (!q->testAttribute(Qt::WA_Moved) || topextra->posFromMove)
                data.crect.translate(topextra->frameStrut.left(), topextra->frameStrut.top());
            if (!topData()->qwsManager) {
                topData()->qwsManager = new QWSManager(q);
                if(q->data->window_state & ~Qt::WindowActive == Qt::WindowMaximized)
                    topData()->qwsManager->maximize();
            }

        } else if (topData()->qwsManager) {
            delete topData()->qwsManager;
            topData()->qwsManager = 0;
            data.crect.translate(-topextra->frameStrut.left(), -topextra->frameStrut.top());
            topextra->frameStrut.setCoords(0, 0, 0, 0);
        }
#endif
        if (!topextra->caption.isEmpty())
            setWindowTitle_helper(topextra->caption);

        //XXX If we are session managed, inform the window manager about it
    } else {
        if (extra && extra->topextra)        { // already allocated due to reparent?
            extra->topextra->frameStrut.setCoords(0, 0, 0, 0);
        }
        //updateRequestedRegion(mapToGlobal(QPoint(0,0)));
    }
}


void QWidget::destroy(bool destroyWindow, bool destroySubWindows)
{
    Q_D(QWidget);

    if (!isWindow() && parentWidget())
        parentWidget()->d_func()->invalidateBuffer(geometry());

    d->deactivateWidgetCleanup();
    if (testAttribute(Qt::WA_WState_Created)) {
        setAttribute(Qt::WA_WState_Created, false);
        QObjectList childObjects =  children();
        for (int i = 0; i < childObjects.size(); ++i) {
            QObject *obj = childObjects.at(i);
            if (obj->isWidgetType())
                static_cast<QWidget*>(obj)->destroy(destroySubWindows,
                                                     destroySubWindows);
        }
        releaseMouse();
        if (qt_pressGrab == this)
          qt_pressGrab = 0;

        if (keyboardGrb == this)
            releaseKeyboard();
        if (testAttribute(Qt::WA_ShowModal))                // just be sure we leave modal
            QApplicationPrivate::leaveModal(this);
        else if ((windowType() == Qt::Popup))
            qApp->d_func()->closePopup(this);

        if (d->ic) {
            delete d->ic;
            d->ic =0;
        } else {
            // release previous focus information participating with
            // preedit preservation of qic -- while we still have a winId
            QInputContext *qic = inputContext();
            if (qic)
                qic->widgetDestroyed(this);
        }

        if ((windowType() == Qt::Desktop)) {
        } else {
            if (parentWidget() && parentWidget()->testAttribute(Qt::WA_WState_Created)) {
                d->hide_sys();
            }
            if (destroyWindow && isWindow()) {
                d->extra->topextra->backingStore->windowSurface->setGeometry(QRect());
                qwsDisplay()->destroyRegion(internalWinId());
            }
        }
        d->setWinId(0);
    }
}


void QWidgetPrivate::setParent_sys(QWidget *newparent, Qt::WindowFlags f)
{
    Q_Q(QWidget);
    bool wasCreated = q->testAttribute(Qt::WA_WState_Created);
     if (q->isVisible() && q->parentWidget() && parent != q->parentWidget())
        q->parentWidget()->d_func()->invalidateBuffer(q->geometry());
#ifndef QT_NO_CURSOR
    QCursor oldcurs;
    bool setcurs=q->testAttribute(Qt::WA_SetCursor);
    if (setcurs) {
        oldcurs = q->cursor();
        q->unsetCursor();
    }
#endif

    WId old_winid = data.winid;
    if ((q->windowType() == Qt::Desktop))
        old_winid = 0;

    if (!q->isWindow() && q->parentWidget() && q->parentWidget()->testAttribute(Qt::WA_WState_Created))
        hide_sys();

    setWinId(0);

    if (parent != newparent) {
        QWidget *oldparent = q->parentWidget();
        QObjectPrivate::setParent_helper(newparent);
        if (oldparent) {
//            oldparent->d_func()->setChildrenAllocatedDirty();
//            oldparent->data->paintable_region_dirty = true;
        }
        if (newparent) {
//            newparent->d_func()->setChildrenAllocatedDirty();
//            newparent->data->paintable_region_dirty = true;
            //@@@@@@@
        }
    }
    Qt::FocusPolicy fp = q->focusPolicy();
    QSize    s            = q->size();
    //QBrush   bgc    = background();                        // save colors
    bool explicitlyHidden = q->testAttribute(Qt::WA_WState_Hidden) && q->testAttribute(Qt::WA_WState_ExplicitShowHide);

    data.window_flags = f;
    q->setAttribute(Qt::WA_WState_Created, false);
    q->setAttribute(Qt::WA_WState_Visible, false);
    q->setAttribute(Qt::WA_WState_Hidden, false);
    adjustFlags(data.window_flags, q);
    // keep compatibility with previous versions, we need to preserve the created state
    // (but we recreate the winId for the widget being reparented, again for compatibility)
    if (wasCreated || (!q->isWindow() && newparent->testAttribute(Qt::WA_WState_Created)))
        createWinId();
    if (q->isWindow() || (!newparent || newparent->isVisible()) || explicitlyHidden)
        q->setAttribute(Qt::WA_WState_Hidden);
    q->setAttribute(Qt::WA_WState_ExplicitShowHide, explicitlyHidden);

    if (q->isWindow()) {
        QRect fs = frameStrut();
        data.crect = QRect(fs.left(), fs.top(), s.width(), s.height());
        if ((data.window_flags & Qt::FramelessWindowHint) && extra && extra->topextra)
            extra->topextra->frameStrut.setCoords(0, 0, 0, 0);
    } else {
        data.crect = QRect(0, 0, s.width(), s.height());
    }

    q->setFocusPolicy(fp);
    if (extra && !extra->mask.isEmpty()) {
        QRegion r = extra->mask;
        extra->mask = QRegion();
        q->setMask(r);
    }
    if ((int)old_winid > 0) {
        QWidget::qwsDisplay()->destroyRegion(old_winid);
        extra->topextra->backingStore->windowSurface->setGeometry(QRect());
    }
#ifndef QT_NO_CURSOR
    if (setcurs) {
        q->setCursor(oldcurs);
    }
#endif
}


QPoint QWidget::mapToGlobal(const QPoint &pos) const
{
    int           x=pos.x(), y=pos.y();
    const QWidget* w = this;
    while (w) {
        x += w->data->crect.x();
        y += w->data->crect.y();
        w = w->isWindow() ? 0 : w->parentWidget();
    }
    return QPoint(x, y);
}

QPoint QWidget::mapFromGlobal(const QPoint &pos) const
{
    int           x=pos.x(), y=pos.y();
    const QWidget* w = this;
    while (w) {
        x -= w->data->crect.x();
        y -= w->data->crect.y();
        w = w->isWindow() ? 0 : w->parentWidget();
    }
    return QPoint(x, y);
}

#if 0 // #####
void QWidget::setMicroFocusHint(int x, int y, int width, int height,
                                 bool text, QFont *)
{
    if (QRect(x, y, width, height) != microFocusHint()) {
        d->createExtra();
        d->extra->micro_focus_hint.setRect(x, y, width, height);
    }
#ifndef QT_NO_QWS_INPUTMETHODS
    if (text) {
        QWidget *tlw = window();
        int winid = tlw->internalWinId();
        QPoint p(x, y + height);
        QPoint gp = mapToGlobal(p);

        QRect r = QRect(mapToGlobal(QPoint(0,0)),
                         size());