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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 445 insertions, 0 deletions

diff --git a/src/gui/embedded/qscreenvfb_qws.cpp b/src/gui/embedded/qscreenvfb_qws.cpp
new file mode 100644
index 0000000000..1c8829d500
--- /dev/null
+++ b/src/gui/embedded/qscreenvfb_qws.cpp
@@ -0,0 +1,445 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QT_NO_QWS_QVFB
+
+#define QTOPIA_QVFB_BRIGHTNESS
+
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <qvfbhdr.h>
+#include <qscreenvfb_qws.h>
+#include <qkbdvfb_qws.h>
+#include <qmousevfb_qws.h>
+#include <qwindowsystem_qws.h>
+#include <qsocketnotifier.h>
+#include <qapplication.h>
+#include <qscreen_qws.h>
+#include <qmousedriverfactory_qws.h>
+#include <qkbddriverfactory_qws.h>
+#include <qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+class QVFbScreenPrivate
+{
+public:
+    QVFbScreenPrivate();
+    ~QVFbScreenPrivate();
+
+    bool success;
+    unsigned char *shmrgn;
+    int brightness;
+    bool blank;
+    QVFbHeader *hdr;
+    QWSMouseHandler *mouse;
+#ifndef QT_NO_QWS_KEYBOARD
+    QWSKeyboardHandler *keyboard;
+#endif
+};
+
+QVFbScreenPrivate::QVFbScreenPrivate()
+    : mouse(0)
+
+{
+#ifndef QT_NO_QWS_KEYBOARD
+    keyboard = 0;
+#endif
+    brightness = 255;
+    blank = false;
+}
+
+QVFbScreenPrivate::~QVFbScreenPrivate()
+{
+    delete mouse;
+#ifndef QT_NO_QWS_KEYBOARD
+    delete keyboard;
+#endif
+}
+
+/*!
+    \internal
+
+    \class QVFbScreen
+    \ingroup qws
+
+    \brief The QVFbScreen class implements a screen driver for the
+    virtual framebuffer.
+
+    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.
+
+    The Qt for Embedded Linux platform provides a \l{The Virtual
+    Framebuffer}{virtual framebuffer} for development and debugging;
+    the virtual framebuffer allows Qt for Embedded Linux applications to be
+    developed on a desktop machine, without switching between consoles
+    and X11.
+
+    \sa QScreen, QScreenDriverPlugin, {Running Applications}
+*/
+
+/*!
+    \fn bool QVFbScreen::connect(const QString & displaySpec)
+    \reimp
+*/
+
+/*!
+    \fn void QVFbScreen::disconnect()
+    \reimp
+*/
+
+/*!
+    \fn bool QVFbScreen::initDevice()
+    \reimp
+*/
+
+/*!
+    \fn void QVFbScreen::restore()
+    \reimp
+*/
+
+/*!
+    \fn void QVFbScreen::save()
+    \reimp
+*/
+
+/*!
+    \fn void QVFbScreen::setDirty(const QRect & r)
+    \reimp
+*/
+
+/*!
+    \fn void QVFbScreen::setMode(int nw, int nh, int nd)
+    \reimp
+*/
+
+/*!
+    \fn void QVFbScreen::shutdownDevice()
+    \reimp
+*/
+
+/*!
+    \fn QVFbScreen::QVFbScreen(int displayId)
+
+    Constructs a QVNCScreen object. The \a displayId argument
+    identifies the Qt for Embedded Linux server to connect to.
+*/
+QVFbScreen::QVFbScreen(int display_id)
+    : QScreen(display_id, VFbClass), d_ptr(new QVFbScreenPrivate)
+{
+    d_ptr->shmrgn = 0;
+    d_ptr->hdr = 0;
+    data = 0;
+}
+
+/*!
+    Destroys this QVFbScreen object.
+*/
+QVFbScreen::~QVFbScreen()
+{
+    delete d_ptr;
+}
+
+static QVFbScreen *connected = 0;
+
+bool QVFbScreen::connect(const QString &displaySpec)
+{
+    QStringList displayArgs = displaySpec.split(QLatin1Char(':'));
+    if (displayArgs.contains(QLatin1String("Gray")))
+        grayscale = true;
+
+    key_t key = ftok(QT_VFB_MOUSE_PIPE(displayId).toLocal8Bit(), 'b');
+
+    if (key == -1)
+        return false;
+
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+#ifndef QT_QWS_FRAMEBUFFER_LITTLE_ENDIAN
+    if (displayArgs.contains(QLatin1String("littleendian")))
+#endif
+        QScreen::setFrameBufferLittleEndian(true);
+#endif
+
+    int shmId = shmget(key, 0, 0);
+    if (shmId != -1)
+        d_ptr->shmrgn = (unsigned char *)shmat(shmId, 0, 0);
+    else
+        return false;
+
+    if ((long)d_ptr->shmrgn == -1 || d_ptr->shmrgn == 0) {
+        qDebug("No shmrgn %ld", (long)d_ptr->shmrgn);
+        return false;
+    }
+
+    d_ptr->hdr = (QVFbHeader *)d_ptr->shmrgn;
+    data = d_ptr->shmrgn + d_ptr->hdr->dataoffset;
+
+    dw = w = d_ptr->hdr->width;
+    dh = h = d_ptr->hdr->height;
+    d = d_ptr->hdr->depth;
+
+    switch (d) {
+    case 1:
+        setPixelFormat(QImage::Format_Mono);
+        break;
+    case 8:
+        setPixelFormat(QImage::Format_Indexed8);
+        break;
+    case 12:
+        setPixelFormat(QImage::Format_RGB444);
+        break;
+    case 15:
+        setPixelFormat(QImage::Format_RGB555);
+        break;
+    case 16:
+        setPixelFormat(QImage::Format_RGB16);
+        break;
+    case 18:
+        setPixelFormat(QImage::Format_RGB666);
+        break;
+    case 24:
+        setPixelFormat(QImage::Format_RGB888);
+        break;
+    case 32:
+        setPixelFormat(QImage::Format_ARGB32_Premultiplied);
+        break;
+    }
+
+    lstep = d_ptr->hdr->linestep;
+
+    // Handle display physical size spec.
+    int dimIdxW = -1;
+    int dimIdxH = -1;
+    for (int i = 0; i < displayArgs.size(); ++i) {
+        if (displayArgs.at(i).startsWith(QLatin1String("mmWidth"))) {
+            dimIdxW = i;
+            break;
+        }
+    }
+    for (int i = 0; i < displayArgs.size(); ++i) {
+        if (displayArgs.at(i).startsWith(QLatin1String("mmHeight"))) {
+            dimIdxH = i;
+            break;
+        }
+    }
+    if (dimIdxW >= 0) {
+        bool ok;
+        int pos = 7;
+        if (displayArgs.at(dimIdxW).at(pos) == QLatin1Char('='))
+            ++pos;
+        int pw = displayArgs.at(dimIdxW).mid(pos).toInt(&ok);
+        if (ok) {
+            physWidth = pw;
+            if (dimIdxH < 0)
+                physHeight = dh*physWidth/dw;
+        }
+    }
+    if (dimIdxH >= 0) {
+        bool ok;
+        int pos = 8;
+        if (displayArgs.at(dimIdxH).at(pos) == QLatin1Char('='))
+            ++pos;
+        int ph = displayArgs.at(dimIdxH).mid(pos).toInt(&ok);
+        if (ok) {
+            physHeight = ph;
+            if (dimIdxW < 0)
+                physWidth = dw*physHeight/dh;
+        }
+    }
+    if (dimIdxW < 0 && dimIdxH < 0) {
+        const int dpi = 72;
+        physWidth = qRound(dw * 25.4 / dpi);
+        physHeight = qRound(dh * 25.4 / dpi);
+    }
+
+    qDebug("Connected to VFB server %s: %d x %d x %d %dx%dmm (%dx%ddpi)", displaySpec.toLatin1().data(),
+        w, h, d, physWidth, physHeight, qRound(dw*25.4/physWidth), qRound(dh*25.4/physHeight) );
+
+    size = lstep * h;
+    mapsize = size;
+    screencols = d_ptr->hdr->numcols;
+    memcpy(screenclut, d_ptr->hdr->clut, sizeof(QRgb) * screencols);
+
+    connected = this;
+
+    if (qgetenv("QT_QVFB_BGR").toInt())
+        pixeltype = BGRPixel;
+
+    return true;
+}
+
+void QVFbScreen::disconnect()
+{
+    connected = 0;
+    if ((long)d_ptr->shmrgn != -1 && d_ptr->shmrgn) {
+        if (qApp->type() == QApplication::GuiServer && d_ptr->hdr->dataoffset >= (int)sizeof(QVFbHeader)) {
+            d_ptr->hdr->serverVersion = 0;
+        }
+        shmdt((char*)d_ptr->shmrgn);
+    }
+}
+
+bool QVFbScreen::initDevice()
+{
+#ifndef QT_NO_QWS_MOUSE_QVFB
+    const QString mouseDev = QT_VFB_MOUSE_PIPE(displayId);
+    d_ptr->mouse = new QVFbMouseHandler(QLatin1String("QVFbMouse"), mouseDev);
+    qwsServer->setDefaultMouse("None");
+    if (d_ptr->mouse)
+        d_ptr->mouse->setScreen(this);
+#endif
+
+#if !defined(QT_NO_QWS_KBD_QVFB) && !defined(QT_NO_QWS_KEYBOARD)
+    const QString keyboardDev = QT_VFB_KEYBOARD_PIPE(displayId);
+    d_ptr->keyboard = new QVFbKeyboardHandler(keyboardDev);
+    qwsServer->setDefaultKeyboard("None");
+#endif
+
+    if (d_ptr->hdr->dataoffset >= (int)sizeof(QVFbHeader))
+        d_ptr->hdr->serverVersion = QT_VERSION;
+
+    if(d==8) {
+        screencols=256;
+        if (grayscale) {
+            // Build grayscale palette
+            for(int loopc=0;loopc<256;loopc++) {
+                screenclut[loopc]=qRgb(loopc,loopc,loopc);
+            }
+        } else {
+            // 6x6x6 216 color cube
+            int idx = 0;
+            for(int ir = 0x0; ir <= 0xff; ir+=0x33) {
+                for(int ig = 0x0; ig <= 0xff; ig+=0x33) {
+                    for(int ib = 0x0; ib <= 0xff; ib+=0x33) {
+                        screenclut[idx]=qRgb(ir, ig, ib);
+                        idx++;
+                    }
+                }
+            }
+            screencols=idx;
+        }
+        memcpy(d_ptr->hdr->clut, screenclut, sizeof(QRgb) * screencols);
+        d_ptr->hdr->numcols = screencols;
+    } else if (d == 4) {
+        int val = 0;
+        for (int idx = 0; idx < 16; idx++, val += 17) {
+            screenclut[idx] = qRgb(val, val, val);
+        }
+        screencols = 16;
+        memcpy(d_ptr->hdr->clut, screenclut, sizeof(QRgb) * screencols);
+        d_ptr->hdr->numcols = screencols;
+    } else if (d == 1) {
+        screencols = 2;
+        screenclut[1] = qRgb(0xff, 0xff, 0xff);
+        screenclut[0] = qRgb(0, 0, 0);
+        memcpy(d_ptr->hdr->clut, screenclut, sizeof(QRgb) * screencols);
+        d_ptr->hdr->numcols = screencols;
+    }
+
+#ifndef QT_NO_QWS_CURSOR
+    QScreenCursor::initSoftwareCursor();
+#endif
+    return true;
+}
+
+void QVFbScreen::shutdownDevice()
+{
+}
+
+void QVFbScreen::setMode(int ,int ,int)
+{
+}
+
+// save the state of the graphics card
+// This is needed so that e.g. we can restore the palette when switching
+// between linux virtual consoles.
+void QVFbScreen::save()
+{
+    // nothing to do.
+}
+
+// restore the state of the graphics card.
+void QVFbScreen::restore()
+{
+}
+void QVFbScreen::setDirty(const QRect& rect)
+{
+    const QRect r = rect.translated(-offset());
+    d_ptr->hdr->dirty = true;
+    d_ptr->hdr->update = d_ptr->hdr->update.united(r);
+}
+
+void QVFbScreen::setBrightness(int b)
+{
+    if (connected) {
+        connected->d_ptr->brightness = b;
+
+        QVFbHeader *hdr = connected->d_ptr->hdr;
+        if (hdr->viewerVersion < 0x040400) // brightness not supported
+            return;
+
+        const int br = connected->d_ptr->blank ? 0 : b;
+        if (hdr->brightness != br) {
+            hdr->brightness = br;
+            connected->setDirty(connected->region().boundingRect());
+        }
+    }
+}
+
+void QVFbScreen::blank(bool on)
+{
+    d_ptr->blank = on;
+    setBrightness(connected->d_ptr->brightness);
+}
+
+#endif // QT_NO_QWS_QVFB
+
+QT_END_NAMESPACE