Long live Qt 4.5!

1 files changed, 734 insertions, 0 deletions

diff --git a/src/gui/embedded/qscreentransformed_qws.cpp b/src/gui/embedded/qscreentransformed_qws.cpp
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+++ b/src/gui/embedded/qscreentransformed_qws.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscreentransformed_qws.h"
+
+#ifndef QT_NO_QWS_TRANSFORMED
+#include <qscreendriverfactory_qws.h>
+#include <qvector.h>
+#include <private/qpainter_p.h>
+#include <private/qmemrotate_p.h>
+#include <qmatrix.h>
+
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <qwindowsystem_qws.h>
+#include <qwsdisplay_qws.h>
+
+QT_BEGIN_NAMESPACE
+
+//#define QT_REGION_DEBUG
+
+#ifdef QT_REGION_DEBUG
+#include <QDebug>
+#endif
+
+class QTransformedScreenPrivate
+{
+public:
+    QTransformedScreenPrivate(QTransformedScreen *parent);
+
+    void configure();
+
+    QTransformedScreen::Transformation transformation;
+#ifdef QT_QWS_DEPTH_GENERIC
+    bool doGenericColors;
+#endif
+    QTransformedScreen *q;
+};
+
+QTransformedScreenPrivate::QTransformedScreenPrivate(QTransformedScreen *parent)
+    : transformation(QTransformedScreen::None),
+#ifdef QT_QWS_DEPTH_GENERIC
+      doGenericColors(false),
+#endif
+      q(parent)
+{
+}
+
+extern "C"
+#ifndef QT_BUILD_GUI_LIB
+Q_DECL_EXPORT
+#endif
+void qws_setScreenTransformation(QScreen *that, int t)
+{
+    QTransformedScreen *tscreen = static_cast<QTransformedScreen*>(that);
+    tscreen->setTransformation((QTransformedScreen::Transformation)t);
+}
+
+// ---------------------------------------------------------------------------
+// Transformed Screen
+// ---------------------------------------------------------------------------
+
+/*!
+    \internal
+
+    \class QTransformedScreen
+    \ingroup qws
+
+    \brief The QTransformedScreen class implements a screen driver for
+    a transformed screen.
+
+    Note that this class is only available in \l{Qt for Embedded Linux}.
+    Custom screen drivers can be added by subclassing the
+    QScreenDriverPlugin class, using the QScreenDriverFactory class to
+    dynamically load the driver into the application, but there should
+    only be one screen object per application.
+
+    Use the QScreen::isTransformed() function to determine if a screen
+    is transformed. The QTransformedScreen class itself provides means
+    of rotating the screen with its setTransformation() function; the
+    transformation() function returns the currently set rotation in
+    terms of the \l Transformation enum (which describes the various
+    available rotation settings). Alternatively, QTransformedScreen
+    provides an implementation of the QScreen::transformOrientation()
+    function, returning the current rotation as an integer value.
+
+    \sa QScreen, QScreenDriverPlugin, {Running Applications}
+*/
+
+/*!
+    \enum QTransformedScreen::Transformation
+
+    This enum describes the various rotations a transformed screen can
+    have.
+
+    \value None No rotation
+    \value Rot90 90 degrees rotation
+    \value Rot180 180 degrees rotation
+    \value Rot270 270 degrees rotation
+*/
+
+/*!
+    \fn bool QTransformedScreen::isTransformed() const
+    \reimp
+*/
+
+/*!
+    Constructs a QTransformedScreen object. The \a displayId argument
+    identifies the Qt for Embedded Linux server to connect to.
+*/
+QTransformedScreen::QTransformedScreen(int displayId)
+    : QProxyScreen(displayId, QScreen::TransformedClass)
+{
+    d_ptr = new QTransformedScreenPrivate(this);
+    d_ptr->transformation = None;
+
+#ifdef QT_REGION_DEBUG
+    qDebug() << "QTransformedScreen::QTransformedScreen";
+#endif
+}
+
+void QTransformedScreenPrivate::configure()
+{
+    // ###: works because setTransformation recalculates unconditionally
+    q->setTransformation(transformation);
+}
+
+/*!
+    Destroys the QTransformedScreen object.
+*/
+QTransformedScreen::~QTransformedScreen()
+{
+    delete d_ptr;
+}
+
+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 QTransformedScreen::Transformation filterTransformation(QString &spec)
+{
+    QRegExp regexp(QLatin1String("\\bRot(\\d+):?\\b"), Qt::CaseInsensitive);
+    if (regexp.indexIn(spec) == -1)
+        return QTransformedScreen::None;
+
+    const int degrees = regexp.cap(1).toInt();
+    spec.remove(regexp.pos(0), regexp.matchedLength());
+
+    return static_cast<QTransformedScreen::Transformation>(degrees / 90);
+}
+
+/*!
+    \reimp
+*/
+bool QTransformedScreen::connect(const QString &displaySpec)
+{
+    QString dspec = displaySpec.trimmed();
+    if (dspec.startsWith(QLatin1String("Transformed:"), Qt::CaseInsensitive))
+        dspec = dspec.mid(QString(QLatin1String("Transformed:")).size());
+    else if (!dspec.compare(QLatin1String("Transformed"), Qt::CaseInsensitive))
+        dspec = QString();
+
+    const QString displayIdSpec = QString(QLatin1String(" :%1")).arg(displayId);
+    if (dspec.endsWith(displayIdSpec))
+        dspec = dspec.left(dspec.size() - displayIdSpec.size());
+
+    d_ptr->transformation = filterTransformation(dspec);
+
+    QString driver = dspec;
+    int colon = driver.indexOf(QLatin1Char(':'));
+    if (colon >= 0)
+        driver.truncate(colon);
+
+    if (!QScreenDriverFactory::keys().contains(driver, Qt::CaseInsensitive))
+        if (!dspec.isEmpty())
+            dspec.prepend(QLatin1String(":"));
+
+    const int id = getDisplayId(dspec);
+    QScreen *s = qt_get_screen(id, dspec.toLatin1().constData());
+    setScreen(s);
+
+#ifdef QT_QWS_DEPTH_GENERIC
+    d_ptr->doGenericColors = dspec.contains(QLatin1String("genericcolors"));
+#endif
+
+    d_ptr->configure();
+
+    // XXX
+    qt_screen = this;
+
+    return true;
+}
+
+/*!
+    Returns the currently set rotation.
+
+    \sa setTransformation(), QScreen::transformOrientation()
+*/
+QTransformedScreen::Transformation QTransformedScreen::transformation() const
+{
+    return d_ptr->transformation;
+}
+
+/*!
+    \reimp
+*/
+int QTransformedScreen::transformOrientation() const
+{
+    return (int)d_ptr->transformation;
+}
+
+/*!
+    \reimp
+*/
+void QTransformedScreen::exposeRegion(QRegion region, int changing)
+{
+    if (!data || d_ptr->transformation == None) {
+        QProxyScreen::exposeRegion(region, changing);
+        return;
+    }
+    QScreen::exposeRegion(region, changing);
+}
+
+/*!
+    Rotates this screen object according to the specified \a transformation.
+
+    \sa transformation()
+*/
+void QTransformedScreen::setTransformation(Transformation transformation)
+{
+    d_ptr->transformation = transformation;
+    QSize size = mapFromDevice(QSize(dw, dh));
+    w = size.width();
+    h = size.height();
+
+    const QScreen *s = screen();
+    size = mapFromDevice(QSize(s->physicalWidth(), s->physicalHeight()));
+    physWidth = size.width();
+    physHeight = size.height();
+
+#ifdef QT_REGION_DEBUG
+    qDebug() << "QTransformedScreen::setTransformation" << transformation
+             << "size" << w << h << "dev size" << dw << dh;
+#endif
+
+}
+
+static inline QRect correctNormalized(const QRect &r) {
+    const int x1 = qMin(r.left(), r.right());
+    const int x2 = qMax(r.left(), r.right());
+    const int y1 = qMin(r.top(), r.bottom());
+    const int y2 = qMax(r.top(), r.bottom());
+
+    return QRect( QPoint(x1,y1), QPoint(x2,y2) );
+}
+
+template <class DST, class SRC>
+static inline void blit90(QScreen *screen, const QImage &image,
+                          const QRect &rect, const QPoint &topLeft)
+{
+    const SRC *src = (const SRC*)(image.scanLine(rect.top())) + rect.left();
+    DST *dest = (DST*)(screen->base() + topLeft.y() * screen->linestep())
+                + topLeft.x();
+    qt_memrotate90(src, rect.width(), rect.height(), image.bytesPerLine(),
+                   dest, screen->linestep());
+}
+
+template <class DST, class SRC>
+static inline void blit180(QScreen *screen, const QImage &image,
+                           const QRect &rect, const QPoint &topLeft)
+{
+    const SRC *src = (const SRC*)(image.scanLine(rect.top())) + rect.left();
+    DST *dest = (DST*)(screen->base() + topLeft.y() * screen->linestep())
+                + topLeft.x();
+    qt_memrotate180(src, rect.width(), rect.height(), image.bytesPerLine(),
+                    dest, screen->linestep());
+}
+
+template <class DST, class SRC>
+static inline void blit270(QScreen *screen, const QImage &image,
+                           const QRect &rect, const QPoint &topLeft)
+{
+    const SRC *src = (const SRC *)(image.scanLine(rect.top())) + rect.left();
+    DST *dest = (DST*)(screen->base() + topLeft.y() * screen->linestep())
+                + topLeft.x();
+    qt_memrotate270(src, rect.width(), rect.height(), image.bytesPerLine(),
+                    dest, screen->linestep());
+}
+
+typedef void (*BlitFunc)(QScreen *, const QImage &, const QRect &, const QPoint &);
+
+#define SET_BLIT_FUNC(dst, src, rotation, func) \
+do {                                            \
+    switch (rotation) {                         \
+    case Rot90:                                 \
+        func = blit90<dst, src>;                \
+        break;                                  \
+    case Rot180:                                \
+        func = blit180<dst, src>;               \
+        break;                                  \
+    case Rot270:                                \
+        func = blit270<dst, src>;               \
+        break;                                  \
+    default:                                    \
+        break;                                  \
+    }                                           \
+} while (0)
+
+/*!
+    \reimp
+*/
+void QTransformedScreen::blit(const QImage &image, const QPoint &topLeft,
+                              const QRegion &region)
+{
+    const Transformation trans = d_ptr->transformation;
+    if (trans == None) {
+        QProxyScreen::blit(image, topLeft, region);
+        return;
+    }
+
+    const QVector<QRect> rects = region.rects();
+    const QRect bound = QRect(0, 0, QScreen::w, QScreen::h)
+                        & QRect(topLeft, image.size());
+
+    BlitFunc func = 0;
+#ifdef QT_QWS_DEPTH_GENERIC
+    if (d_ptr->doGenericColors && depth() == 16) {
+        if (image.depth() == 16)
+            SET_BLIT_FUNC(qrgb_generic16, quint16, trans, func);
+        else
+            SET_BLIT_FUNC(qrgb_generic16, quint32, trans, func);
+    } else
+#endif
+    switch (depth()) {
+#ifdef QT_QWS_DEPTH_32
+    case 32:
+#ifdef QT_QWS_DEPTH_16
+        if (image.depth() == 16)
+            SET_BLIT_FUNC(quint32, quint16, trans, func);
+        else
+#endif
+            SET_BLIT_FUNC(quint32, quint32, trans, func);
+        break;
+#endif
+#if defined(QT_QWS_DEPTH_24) || defined(QT_QWS_DEPTH18)
+    case 24:
+    case 18:
+        SET_BLIT_FUNC(quint24, quint24, trans, func);
+        break;
+#endif
+#if defined(QT_QWS_DEPTH_16) || defined(QT_QWS_DEPTH_15) || defined(QT_QWS_DEPTH_12)
+    case 16:
+    case 15:
+    case 12:
+        if (image.depth() == 16)
+            SET_BLIT_FUNC(quint16, quint16, trans, func);
+        else
+            SET_BLIT_FUNC(quint16, quint32, trans, func);
+        break;
+#endif
+#ifdef QT_QWS_DEPTH_8
+    case 8:
+        if (image.depth() == 16)
+            SET_BLIT_FUNC(quint8, quint16, trans, func);
+        else
+            SET_BLIT_FUNC(quint8, quint32, trans, func);
+        break;
+#endif
+    default:
+        return;
+    }
+    if (!func)
+        return;
+
+    QWSDisplay::grab();
+    for (int i = 0; i < rects.size(); ++i) {
+        const QRect r = rects.at(i) & bound;
+
+        QPoint dst;
+        switch (trans) {
+        case Rot90:
+            dst = mapToDevice(r.topRight(), QSize(w, h));
+            break;
+        case Rot180:
+            dst = mapToDevice(r.bottomRight(), QSize(w, h));
+            break;
+        case Rot270:
+            dst = mapToDevice(r.bottomLeft(), QSize(w, h));
+            break;
+        default:
+            break;
+        }
+        func(this, image, r.translated(-topLeft), dst);
+    }
+    QWSDisplay::ungrab();
+
+}
+
+/*!
+    \reimp
+*/
+void QTransformedScreen::solidFill(const QColor &color, const QRegion &region)
+{
+    const QRegion tr = mapToDevice(region, QSize(w,h));
+
+    Q_ASSERT(tr.boundingRect() == mapToDevice(region.boundingRect(), QSize(w,h)));
+
+#ifdef QT_REGION_DEBUG
+    qDebug() << "QTransformedScreen::solidFill region" << region << "transformed" << tr;
+#endif
+    QProxyScreen::solidFill(color, tr);
+}
+
+/*!
+    \reimp
+*/
+QSize QTransformedScreen::mapToDevice(const QSize &s) const
+{
+    switch (d_ptr->transformation) {
+    case None:
+    case Rot180:
+        break;
+    case Rot90:
+    case Rot270:
+        return QSize(s.height(), s.width());
+        break;
+    }
+    return s;
+}
+
+/*!
+    \reimp
+*/
+QSize QTransformedScreen::mapFromDevice(const QSize &s) const
+{
+    switch (d_ptr->transformation) {
+    case None:
+    case Rot180:
+        break;
+    case Rot90:
+    case Rot270:
+        return QSize(s.height(), s.width());
+        break;
+    }
+    return s;
+}
+
+/*!
+    \reimp
+*/
+QPoint QTransformedScreen::mapToDevice(const QPoint &p, const QSize &s) const
+{
+    QPoint rp(p);
+
+    switch (d_ptr->transformation) {
+    case None:
+        break;
+    case Rot90:
+        rp.setX(p.y());
+        rp.setY(s.width() - p.x() - 1);
+        break;
+    case Rot180:
+        rp.setX(s.width() - p.x() - 1);
+        rp.setY(s.height() - p.y() - 1);
+        break;
+    case Rot270:
+        rp.setX(s.height() - p.y() - 1);
+        rp.setY(p.x());
+        break;
+    }
+
+    return rp;
+}
+
+/*!
+    \reimp
+*/
+QPoint QTransformedScreen::mapFromDevice(const QPoint &p, const QSize &s) const
+{
+    QPoint rp(p);
+
+    switch (d_ptr->transformation) {
+    case None:
+        break;
+    case Rot90:
+        rp.setX(s.height() - p.y() - 1);
+        rp.setY(p.x());
+        break;
+    case Rot180:
+        rp.setX(s.width() - p.x() - 1);
+        rp.setY(s.height() - p.y() - 1);
+        break;
+    case Rot270:
+        rp.setX(p.y());
+        rp.setY(s.width() - p.x() - 1);
+        break;
+    }
+
+    return rp;
+}
+
+/*!
+    \reimp
+*/
+QRect QTransformedScreen::mapToDevice(const QRect &r, const QSize &s) const
+{
+    if (r.isNull())
+        return QRect();
+
+    QRect tr;
+    switch (d_ptr->transformation) {
+    case None:
+        tr = r;
+        break;
+    case Rot90:
+        tr.setCoords(r.y(), s.width() - r.x() - 1,
+                     r.bottom(), s.width() - r.right() - 1);
+        break;
+    case Rot180:
+        tr.setCoords(s.width() - r.x() - 1, s.height() - r.y() - 1,
+                     s.width() - r.right() - 1, s.height() - r.bottom() - 1);
+        break;
+    case Rot270:
+        tr.setCoords(s.height() - r.y() - 1, r.x(),
+                     s.height() - r.bottom() - 1, r.right());
+        break;
+    }
+
+    return correctNormalized(tr);
+}
+
+/*!
+    \reimp
+*/
+QRect QTransformedScreen::mapFromDevice(const QRect &r, const QSize &s) const
+{
+    if (r.isNull())
+        return QRect();
+
+    QRect tr;
+    switch (d_ptr->transformation) {
+    case None:
+        tr = r;
+        break;
+    case Rot90:
+        tr.setCoords(s.height() - r.y() - 1, r.x(),
+                     s.height() - r.bottom() - 1, r.right());
+        break;
+    case Rot180:
+        tr.setCoords(s.width() - r.x() - 1, s.height() - r.y() - 1,
+                     s.width() - r.right() - 1, s.height() - r.bottom() - 1);
+        break;
+    case Rot270:
+        tr.setCoords(r.y(), s.width() - r.x() - 1,
+                     r.bottom(), s.width() - r.right() - 1);
+        break;
+    }
+
+    return correctNormalized(tr);
+}
+
+/*!
+    \reimp
+*/
+QRegion QTransformedScreen::mapToDevice(const QRegion &rgn, const QSize &s) const
+{
+    if (d_ptr->transformation == None)
+        return QProxyScreen::mapToDevice(rgn, s);
+
+#ifdef QT_REGION_DEBUG
+    qDebug() << "mapToDevice size" << s << "rgn:  " << rgn;
+#endif
+    QRect tr;
+    QRegion trgn;
+    QVector<QRect> a = rgn.rects();
+    const QRect *r = a.data();
+
+    int w = s.width();
+    int h = s.height();
+    int size = a.size();
+
+    switch (d_ptr->transformation) {
+    case None:
+        break;
+    case Rot90:
+        for (int i = 0; i < size; i++, r++) {
+            tr.setCoords(r->y(), w - r->x() - 1,
+                         r->bottom(), w - r->right() - 1);
+            trgn |= correctNormalized(tr);
+        }
+        break;
+    case Rot180:
+        for (int i = 0; i < size; i++, r++) {
+            tr.setCoords(w - r->x() - 1, h - r->y() - 1,
+                         w - r->right() - 1, h - r->bottom() - 1);
+            trgn |= correctNormalized(tr);
+        }
+        break;
+    case Rot270:
+        for (int i = 0; i < size; i++, r++) {
+            tr.setCoords(h - r->y() - 1, r->x(),
+                         h - r->bottom() - 1, r->right());
+            trgn |= correctNormalized(tr);
+        }
+        break;
+    }
+#ifdef QT_REGION_DEBUG
+    qDebug() << "mapToDevice trgn:  " << trgn;
+#endif
+    return trgn;
+}
+
+/*!
+    \reimp
+*/
+QRegion QTransformedScreen::mapFromDevice(const QRegion &rgn, const QSize &s) const
+{
+    if (d_ptr->transformation == None)
+        return QProxyScreen::mapFromDevice(rgn, s);
+
+#ifdef QT_REGION_DEBUG
+    qDebug() << "fromDevice: realRegion count:  " << rgn.rects().size() << " isEmpty? " << rgn.isEmpty() << "  bounds:" << rgn.boundingRect();
+#endif
+    QRect tr;
+    QRegion trgn;
+    QVector<QRect> a = rgn.rects();
+    const QRect *r = a.data();
+
+    int w = s.width();
+    int h = s.height();
+    int size = a.size();
+
+    switch (d_ptr->transformation) {
+    case None:
+        break;
+    case Rot90:
+        for (int i = 0; i < size; i++, r++) {
+            tr.setCoords(h - r->y() - 1, r->x(),
+                         h - r->bottom() - 1, r->right());
+            trgn |= correctNormalized(tr);
+        }
+        break;
+    case Rot180:
+        for (int i = 0; i < size; i++, r++) {
+            tr.setCoords(w - r->x() - 1, h - r->y() - 1,
+                         w - r->right() - 1, h - r->bottom() - 1);
+            trgn |= correctNormalized(tr);
+        }
+        break;
+    case Rot270:
+        for (int i = 0; i < size; i++, r++) {
+            tr.setCoords(r->y(), w - r->x() - 1,
+                         r->bottom(), w - r->right() - 1);
+            trgn |= correctNormalized(tr);
+        }
+        break;
+    }
+#ifdef QT_REGION_DEBUG
+    qDebug() << "fromDevice: transRegion count: " << trgn.rects().size() << " isEmpty? " << trgn.isEmpty() << "  bounds:" << trgn.boundingRect();
+#endif
+    return trgn;
+}
+
+/*!
+    \reimp
+*/
+void QTransformedScreen::setDirty(const QRect& rect)
+{
+    const QRect r = mapToDevice(rect, QSize(width(), height()));
+    QProxyScreen::setDirty(r);
+}
+
+/*!
+    \reimp
+*/
+QRegion QTransformedScreen::region() const
+{
+    QRegion deviceRegion = QProxyScreen::region();
+    return mapFromDevice(deviceRegion, QSize(deviceWidth(), deviceHeight()));
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_QWS_TRANSFORMED