--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/embedded/qscreenmulti_qws.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,486 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscreenmulti_qws_p.h"
+
+#ifndef QT_NO_QWS_MULTISCREEN
+
+#include <qlist.h>
+#include <qstringlist.h>
+#include <qwidget.h>
+#include <qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+#ifndef QT_NO_QWS_CURSOR
+
+class QMultiScreenCursor : public QScreenCursor
+{
+public:
+    QMultiScreenCursor() : currentCursor(qt_screencursor) { enable = false; }
+    ~QMultiScreenCursor() { qt_screencursor = 0; }
+
+    void set(const QImage &image, int hotx, int hoty);
+    void move(int x, int y);
+    void show();
+    void hide();
+
+    void addCursor(QScreenCursor *cursor);
+
+private:
+    void setCurrentCursor(QScreenCursor *newCursor);
+
+    QScreenCursor *currentCursor;
+    QList<QScreenCursor*> cursors;
+};
+
+void QMultiScreenCursor::set(const QImage &image, int hotx, int hoty)
+{
+    QScreenCursor::set(image, hotx, hoty);
+    if (currentCursor)
+        currentCursor->set(image, hotx, hoty);
+}
+
+void QMultiScreenCursor::setCurrentCursor(QScreenCursor *newCursor)
+{
+    *((QScreenCursor*)this) = *newCursor;
+    currentCursor = newCursor;
+}
+
+// XXX: this is a mess!
+void QMultiScreenCursor::move(int x, int y)
+{
+    const int oldIndex = qt_screen->subScreenIndexAt(pos);
+    QScreenCursor::move(x, y); // updates pos
+    const int newIndex = qt_screen->subScreenIndexAt(pos);
+
+    if (!currentCursor && oldIndex != -1)
+        setCurrentCursor(cursors.at(oldIndex));
+    QScreenCursor *oldCursor = currentCursor;
+
+    if (oldIndex != -1) {
+        const QScreen *oldScreen = qt_screen->subScreens().at(oldIndex);
+        if (newIndex == -1 || oldScreen->region().contains(pos)) {
+            oldCursor->move(x, y);
+            return;
+        }
+    }
+
+    if (newIndex != -1) {
+        QScreenCursor *newCursor = cursors.at(newIndex);
+        newCursor->set(cursor, hotspot.x(), hotspot.y());
+
+        if (oldCursor) {
+            if (oldCursor->isVisible())
+                newCursor->show();
+            oldCursor->hide();
+        }
+
+        newCursor->move(x, y);
+
+        setCurrentCursor(newCursor);
+    }
+}
+
+void QMultiScreenCursor::show()
+{
+    if (currentCursor)
+        currentCursor->show();
+}
+
+void QMultiScreenCursor::hide()
+{
+    if (currentCursor)
+        currentCursor->hide();
+}
+
+void QMultiScreenCursor::addCursor(QScreenCursor *cursor)
+{
+    cursors.append(cursor);
+}
+
+#endif
+
+class QMultiScreenPrivate
+{
+public:
+    QMultiScreenPrivate()
+#ifndef QT_NO_QWS_CURSOR
+        : cursor(0)
+#endif
+    {}
+    ~QMultiScreenPrivate()
+    {
+#ifndef QT_NO_QWS_CURSOR
+        delete cursor;
+#endif
+    }
+
+    QList<QScreen*> screens;
+    QRegion region;
+#ifndef QT_NO_QWS_CURSOR
+    QMultiScreenCursor *cursor;
+#endif
+};
+
+QMultiScreen::QMultiScreen(int displayId)
+    : QScreen(displayId, MultiClass), d_ptr(new QMultiScreenPrivate)
+{
+}
+
+QMultiScreen::~QMultiScreen()
+{
+    delete d_ptr;
+}
+
+bool QMultiScreen::initDevice()
+{
+    bool ok = true;
+
+#ifndef QT_NO_QWS_CURSOR
+    d_ptr->cursor = new QMultiScreenCursor;
+#endif
+
+    const int n = d_ptr->screens.count();
+    for (int i = 0; i < n; ++i) {
+        QScreen *s = d_ptr->screens.at(i);
+        ok = s->initDevice() && ok;
+#ifndef QT_NO_QWS_CURSOR
+        d_ptr->cursor->addCursor(qt_screencursor); // XXX
+#endif
+    }
+
+#ifndef QT_NO_QWS_CURSOR
+    // XXX
+    qt_screencursor = d_ptr->cursor;
+#endif
+
+    return ok;
+}
+
+static int getDisplayId(const QString &spec)
+{
+    QRegExp regexp(QLatin1String(":(\\d+)\\b"));
+    if (regexp.lastIndexIn(spec) != -1) {
+        const QString capture = regexp.cap(1);
+        return capture.toInt();
+    }
+    return 0;
+}
+
+static QPoint filterDisplayOffset(QString &spec)
+{
+    QRegExp regexp(QLatin1String(":offset=(\\d+),(\\d+)\\b"));
+    if (regexp.indexIn(spec) == -1)
+        return QPoint();
+
+    const int x = regexp.cap(1).toInt();
+    const int y = regexp.cap(2).toInt();
+    spec.remove(regexp.pos(0), regexp.matchedLength());
+    return QPoint(x, y);
+}
+
+bool QMultiScreen::connect(const QString &displaySpec)
+{
+    QString dSpec = displaySpec;
+    if (dSpec.startsWith(QLatin1String("Multi:"), Qt::CaseInsensitive))
+        dSpec = dSpec.mid(QString::fromLatin1("Multi:").size());
+
+    const QString displayIdSpec = QString::fromLatin1(" :%1").arg(displayId);
+    if (dSpec.endsWith(displayIdSpec))
+        dSpec = dSpec.left(dSpec.size() - displayIdSpec.size());
+
+    QStringList specs = dSpec.split(QLatin1Char(' '), QString::SkipEmptyParts);
+    foreach (QString spec, specs) {
+        const int id = getDisplayId(spec);
+        if (spec.startsWith("vnc:", Qt::CaseInsensitive)) {
+            spec.append(":noDisablePainting");
+        }
+        const QPoint offset = filterDisplayOffset(spec);
+        QScreen *s = qt_get_screen(id, spec.toLatin1().constData());
+        s->setOffset(offset);
+        addSubScreen(s);
+    }
+
+    QScreen *firstScreen = d_ptr->screens.at(0);
+    Q_ASSERT(firstScreen);
+
+    // XXX
+    QScreen::d = firstScreen->depth();
+
+    QScreen::lstep = 0;
+    QScreen::data = 0;
+    QScreen::size = 0;
+
+    QScreen::w = d_ptr->region.boundingRect().width();
+    QScreen::h = d_ptr->region.boundingRect().height();
+
+    QScreen::dw = QScreen::w;
+    QScreen::dh = QScreen::h;
+
+    // XXX - Extend the physical size based on the first screen
+    // to encompass all screens, so that code that uses the multi
+    // screen to calculate dpi values will get the right numbers.
+    QScreen::physWidth = firstScreen->physicalWidth() * w / firstScreen->width();
+    QScreen::physHeight = firstScreen->physicalHeight() * h / firstScreen->height();
+
+    // XXXXX
+    qt_screen = this;
+
+    return true;
+}
+
+void QMultiScreen::disconnect()
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        d_ptr->screens.at(i)->disconnect();
+}
+
+void QMultiScreen::shutdownDevice()
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        d_ptr->screens.at(i)->shutdownDevice();
+}
+
+void QMultiScreen::setMode(int, int, int)
+{
+    return;
+}
+
+bool QMultiScreen::supportsDepth(int) const
+{
+    return false;
+}
+
+void QMultiScreen::save()
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        d_ptr->screens.at(i)->save();
+}
+
+void QMultiScreen::restore()
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        d_ptr->screens.at(i)->restore();
+}
+
+void QMultiScreen::blank(bool on)
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        d_ptr->screens.at(i)->blank(on);
+}
+
+bool QMultiScreen::onCard(const unsigned char *ptr) const
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        if (d_ptr->screens.at(i)->onCard(ptr))
+            return true;
+    return false;
+}
+
+bool QMultiScreen::onCard(const unsigned char *ptr, ulong &offset) const
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        if (d_ptr->screens.at(i)->onCard(ptr, offset))
+            return true;
+    return false;
+}
+
+bool QMultiScreen::isInterlaced() const
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        if (d_ptr->screens.at(i)->isInterlaced())
+            return true;
+
+    return false;
+}
+
+int QMultiScreen::memoryNeeded(const QString &string)
+{
+    int total = 0;
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        total += d_ptr->screens.at(i)->memoryNeeded(string);
+    return total;
+}
+
+int QMultiScreen::sharedRamSize(void *arg)
+{
+    int total = 0;
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        total += d_ptr->screens.at(i)->sharedRamSize(arg);
+    return total;
+}
+
+void QMultiScreen::haltUpdates()
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        d_ptr->screens.at(i)->haltUpdates();
+}
+
+void QMultiScreen::resumeUpdates()
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i)
+        d_ptr->screens.at(i)->resumeUpdates();
+}
+
+void QMultiScreen::exposeRegion(QRegion region, int changing)
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i) {
+        QScreen *screen = d_ptr->screens.at(i);
+        const QRegion r = region & screen->region();
+        if (r.isEmpty())
+            continue;
+        screen->exposeRegion(r, changing);
+    }
+}
+
+void QMultiScreen::solidFill(const QColor &color, const QRegion &region)
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i) {
+        QScreen *screen = d_ptr->screens.at(i);
+        const QRegion r = region & screen->region();
+        if (r.isEmpty())
+            continue;
+        screen->solidFill(color, r);
+    }
+}
+
+void QMultiScreen::blit(const QImage &img, const QPoint &topLeft,
+                        const QRegion &region)
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i) {
+        QScreen *screen = d_ptr->screens.at(i);
+        const QRegion r = region & screen->region();
+        if (r.isEmpty())
+            continue;
+        screen->blit(img, topLeft, r);
+    }
+}
+
+void QMultiScreen::blit(QWSWindow *bs, const QRegion &clip)
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i) {
+        QScreen *screen = d_ptr->screens.at(i);
+        const QRegion r = clip & screen->region();
+        if (r.isEmpty())
+            continue;
+        screen->blit(bs, r);
+    }
+}
+
+void QMultiScreen::setDirty(const QRect &rect)
+{
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i) {
+        QScreen *screen = d_ptr->screens.at(i);
+        const QRegion r = screen->region() & rect;
+        if (r.isEmpty())
+            continue;
+        screen->setDirty(r.boundingRect());
+    }
+}
+
+
+QWSWindowSurface* QMultiScreen::createSurface(const QString &key) const
+{
+    QWSWindowSurface* surf = 0;
+    const int n = d_ptr->screens.size();
+    for (int i = 0; i < n; ++i) {
+        QScreen *screen = d_ptr->screens.at(i);
+        surf = screen->createSurface(key);
+        if (surf)
+            break;
+    }
+    return surf;
+}
+
+
+QWSWindowSurface* QMultiScreen::createSurface(QWidget *widget) const
+{
+    const QPoint midpoint = (widget->frameGeometry().topLeft()
+                             + widget->frameGeometry().bottomRight()) / 2;
+    int index = subScreenIndexAt(midpoint);
+    if (index == -1)
+        index = 0; // XXX
+    return d_ptr->screens.at(index)->createSurface(widget);
+}
+
+QList<QScreen*> QMultiScreen::subScreens() const
+{
+    return d_ptr->screens;
+}
+
+QRegion QMultiScreen::region() const
+{
+    return d_ptr->region;
+}
+
+void QMultiScreen::addSubScreen(QScreen *screen)
+{
+    d_ptr->screens.append(screen);
+    d_ptr->region += screen->region();
+}
+
+void QMultiScreen::removeSubScreen(QScreen *screen)
+{
+    d_ptr->screens.removeAll(screen);
+    d_ptr->region -= screen->region();
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_QWS_MULTISCREEN