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/****************************************************************************
**
** Copyright (C) 2012 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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::fromLatin1("Transformed:").size());
else if (!dspec.compare(QLatin1String("Transformed"), Qt::CaseInsensitive))
dspec = QString();
const QString displayIdSpec = QString::fromLatin1(" :%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(QLatin1Char(':'));
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 ®ion)
{
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:
#if defined QT_QWS_ROTATE_BGR
if (pixelType() == BGRPixel && image.depth() == 16) {
SET_BLIT_FUNC(qbgr565, quint16, trans, func);
break;
} //fall-through here!!!
#endif
case 15:
#if defined QT_QWS_ROTATE_BGR
if (pixelType() == BGRPixel && image.format() == QImage::Format_RGB555) {
SET_BLIT_FUNC(qbgr555, qrgb555, trans, func);
break;
} //fall-through here!!!
#endif
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.format() == QImage::Format_RGB444)
SET_BLIT_FUNC(quint8, qrgb444, trans, func);
else 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 ®ion)
{
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
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