Long live Qt 4.5!

1 files changed, 222 insertions, 0 deletions

diff --git a/tools/qvfb/qvfbmmap.cpp b/tools/qvfb/qvfbmmap.cpp
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+++ b/tools/qvfb/qvfbmmap.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 tools applications 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 "qvfbmmap.h"
+#include "qvfbhdr.h"
+
+#include <QTimer>
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/ipc.h>
+#include <sys/types.h>
+#include <sys/shm.h>
+#include <sys/stat.h>
+#include <sys/sem.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <math.h>
+
+QT_BEGIN_NAMESPACE
+
+QMMapViewProtocol::QMMapViewProtocol(int displayid, const QSize &s,
+                                     int d, QObject *parent)
+    : QVFbViewProtocol(displayid, parent), hdr(0), dataCache(0), windowId(0)
+{
+    switch (d) {
+    case 1:
+    case 4:
+    case 8:
+    case 12:
+    case 15:
+    case 16:
+    case 18:
+    case 24:
+    case 32:
+        break;
+    default:
+        qFatal("Unsupported bit depth %d\n", d);
+    }
+
+    fileName = QString("/tmp/.qtvfb_map-%1").arg(displayid);
+
+    int w = s.width();
+    int h = s.height();
+
+
+    kh = new QVFbKeyPipeProtocol(displayid);
+    mh = new QVFbMouseLinuxTP(displayid);
+
+    int bpl;
+    if (d < 8)
+	bpl = (w * d + 7) / 8;
+    else
+        bpl = w * ((d + 7) / 8);
+
+    displaySize = bpl * h;
+
+    unsigned char *data;
+    uint data_offset_value = sizeof(QVFbHeader);
+    const int page_size = getpagesize();
+    if (data_offset_value % page_size)
+        data_offset_value += page_size - (data_offset_value % page_size);
+
+    dataSize = bpl * h + data_offset_value;
+
+    unlink(fileName.toLocal8Bit().data());
+    fd = ::open( fileName.toLocal8Bit().data(), O_CREAT|O_RDWR, 0666 );
+    ::lseek(fd, dataSize, SEEK_SET);
+    ::write(fd, "\0", 1);
+    if (fd < 0) {
+        data = (unsigned char *)-1;
+    } else {
+        // might need to do something about size?
+        data = (unsigned char *)mmap(NULL, dataSize, PROT_WRITE | PROT_READ,
+                                     MAP_SHARED, fd, 0);
+        if (data == MAP_FAILED)
+            data = (unsigned char *)-1;
+    }
+
+    if ( (long)data == -1 ){
+        delete kh;
+        delete mh;
+	qFatal( "Cannot attach to mapped file %s", fileName.toLocal8Bit().data());
+    }
+    dataCache = (unsigned char *)malloc(displaySize);
+    memset(dataCache, 0, displaySize);
+    memset(data+sizeof(QVFbHeader), 0, displaySize);
+
+    hdr = (QVFbHeader *)data;
+    hdr->width = w;
+    hdr->height = h;
+    hdr->depth = d;
+    hdr->linestep = bpl;
+    hdr->numcols = 0;
+    hdr->dataoffset = data_offset_value;
+    hdr->update = QRect();
+    hdr->brightness = 255;
+    hdr->windowId = 0;
+
+    mRefreshTimer = new QTimer(this);
+    connect(mRefreshTimer, SIGNAL(timeout()), this, SLOT(flushChanges()));
+}
+
+QMMapViewProtocol::~QMMapViewProtocol()
+{
+    munmap((char *)hdr, dataSize);
+    ::close(fd);
+    unlink(fileName.toLocal8Bit().constData());
+    free(dataCache);
+    delete kh;
+    delete mh;
+}
+
+int QMMapViewProtocol::brightness() const
+{
+    return hdr->brightness;
+}
+
+int QMMapViewProtocol::width() const
+{
+    return hdr->width;
+}
+
+int QMMapViewProtocol::height() const
+{
+    return hdr->height;
+}
+
+int QMMapViewProtocol::depth() const
+{
+    return hdr->depth;
+}
+
+int QMMapViewProtocol::linestep() const
+{
+    return hdr->linestep;
+}
+
+int  QMMapViewProtocol::numcols() const
+{
+    return hdr->numcols;
+}
+
+QVector<QRgb> QMMapViewProtocol::clut() const
+{
+    QVector<QRgb> vector(hdr->numcols);
+    for (int i=0; i < hdr->numcols; ++i)
+        vector[i] = hdr->clut[i];
+
+    return vector;
+}
+
+unsigned char *QMMapViewProtocol::data() const
+{
+    return dataCache;
+    //return ((unsigned char *)hdr)+hdr->dataoffset;
+}
+
+void QMMapViewProtocol::flushChanges()
+{
+    // based of dirty rect, copy changes from hdr to hdrcopy
+    memcpy(dataCache, ((char *)hdr) + hdr->dataoffset, displaySize);
+    emit displayDataChanged(QRect(0, 0, width(), height()));
+}
+
+void QMMapViewProtocol::setRate(int interval)
+{
+    if (interval > 0)
+        return mRefreshTimer->start(1000/interval);
+    else
+        mRefreshTimer->stop();
+}
+
+int QMMapViewProtocol::rate() const
+{
+    int i = mRefreshTimer->interval();
+    if (i > 0)
+        return 1000/i;
+    else
+        return 0;
+}
+
+QT_END_NAMESPACE