Long live Qt 4.5!

1 files changed, 500 insertions, 0 deletions

diff --git a/src/plugins/imageformats/mng/qmnghandler.cpp b/src/plugins/imageformats/mng/qmnghandler.cpp
new file mode 100644
index 0000000..19cc16d
--- /dev/null
+++ b/src/plugins/imageformats/mng/qmnghandler.cpp
@@ -0,0 +1,500 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the plugins 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 "qmnghandler.h"
+
+#include "qimage.h"
+#include "qvariant.h"
+#include "qcolor.h"
+
+#define MNG_USE_SO
+#include <libmng.h>
+
+QT_BEGIN_NAMESPACE
+
+class QMngHandlerPrivate
+{
+    Q_DECLARE_PUBLIC(QMngHandler)
+    public:
+    bool haveReadNone;
+    bool haveReadAll;
+    mng_handle hMNG;
+    QImage image;
+    int elapsed;
+    int nextDelay;
+    int iterCount;
+    int frameIndex;
+    int nextIndex;
+    int frameCount;
+    mng_uint32 iStyle;
+    mng_bool readData(mng_ptr pBuf, mng_uint32 iSize, mng_uint32p pRead);
+    mng_bool writeData(mng_ptr pBuf, mng_uint32 iSize, mng_uint32p pWritten);
+    mng_bool processHeader(mng_uint32 iWidth, mng_uint32 iHeight);
+    QMngHandlerPrivate(QMngHandler *q_ptr);
+    ~QMngHandlerPrivate();
+    bool getNextImage(QImage *result);
+    bool writeImage(const QImage &image);
+    int currentImageNumber() const;
+    int imageCount() const;
+    bool jumpToImage(int imageNumber);
+    bool jumpToNextImage();
+    int nextImageDelay() const;
+    bool setBackgroundColor(const QColor &color);
+    QColor backgroundColor() const;
+    QMngHandler *q_ptr;
+};
+
+static mng_bool myerror(mng_handle /*hMNG*/,
+    mng_int32   iErrorcode,
+    mng_int8    /*iSeverity*/,
+    mng_chunkid iChunkname,
+    mng_uint32  /*iChunkseq*/,
+    mng_int32   iExtra1,
+    mng_int32   iExtra2,
+    mng_pchar   zErrortext)
+{
+    qWarning("MNG error %d: %s; chunk %c%c%c%c; subcode %d:%d",
+        iErrorcode,zErrortext,
+        (iChunkname>>24)&0xff,
+        (iChunkname>>16)&0xff,
+        (iChunkname>>8)&0xff,
+        (iChunkname>>0)&0xff,
+        iExtra1,iExtra2);
+    return TRUE;
+}
+
+static mng_ptr myalloc(mng_size_t iSize)
+{
+#if defined(Q_OS_WINCE)
+    mng_ptr ptr = malloc(iSize);
+    memset(ptr, 0, iSize);
+    return ptr;
+#else
+    return (mng_ptr)calloc(1, iSize);
+#endif
+}
+
+static void myfree(mng_ptr pPtr, mng_size_t /*iSize*/)
+{
+    free(pPtr);
+}
+
+static mng_bool myopenstream(mng_handle)
+{
+    return MNG_TRUE;
+}
+
+static mng_bool myclosestream(mng_handle hMNG)
+{
+    QMngHandlerPrivate *pMydata = reinterpret_cast<QMngHandlerPrivate *>(mng_get_userdata(hMNG));
+    pMydata->haveReadAll = true;
+    return MNG_TRUE;
+}
+
+static mng_bool myreaddata(mng_handle hMNG,
+                    mng_ptr    pBuf,
+                    mng_uint32 iSize,
+                    mng_uint32p pRead)
+{
+    QMngHandlerPrivate *pMydata = reinterpret_cast<QMngHandlerPrivate *>(mng_get_userdata(hMNG));
+    return pMydata->readData(pBuf, iSize, pRead);
+}
+
+static mng_bool mywritedata(mng_handle hMNG,
+		     mng_ptr pBuf,
+		     mng_uint32 iSize,
+		     mng_uint32p pWritten)
+{
+    QMngHandlerPrivate *pMydata = reinterpret_cast<QMngHandlerPrivate *>(mng_get_userdata(hMNG));
+    return pMydata->writeData(pBuf, iSize, pWritten);
+}
+
+static mng_bool myprocessheader(mng_handle hMNG,
+                                mng_uint32 iWidth,
+                                mng_uint32 iHeight)
+{
+    QMngHandlerPrivate *pMydata = reinterpret_cast<QMngHandlerPrivate *>(mng_get_userdata(hMNG));
+    return pMydata->processHeader(iWidth, iHeight);
+}
+
+static mng_ptr mygetcanvasline(mng_handle hMNG,
+			mng_uint32 iLinenr)
+{
+    QMngHandlerPrivate *pMydata = reinterpret_cast<QMngHandlerPrivate *>(mng_get_userdata(hMNG));
+    return (mng_ptr)pMydata->image.scanLine(iLinenr);
+}
+
+static mng_bool myrefresh(mng_handle /*hMNG*/,
+                          mng_uint32 /*iX*/,
+                          mng_uint32 /*iY*/,
+                          mng_uint32 /*iWidth*/,
+                          mng_uint32 /*iHeight*/)
+{
+    return MNG_TRUE;
+}
+
+static mng_uint32 mygettickcount(mng_handle hMNG)
+{
+    QMngHandlerPrivate *pMydata = reinterpret_cast<QMngHandlerPrivate *>(mng_get_userdata(hMNG));
+    return pMydata->elapsed++;
+}
+
+static mng_bool mysettimer(mng_handle hMNG,
+		    mng_uint32 iMsecs)
+{
+    QMngHandlerPrivate *pMydata = reinterpret_cast<QMngHandlerPrivate *>(mng_get_userdata(hMNG));
+    pMydata->elapsed += iMsecs;
+    pMydata->nextDelay = iMsecs;
+    return MNG_TRUE;
+}
+
+static mng_bool myprocessterm(mng_handle hMNG,
+                        mng_uint8   iTermaction,
+                        mng_uint8   /*iIteraction*/,
+                        mng_uint32  /*iDelay*/,
+                        mng_uint32  iItermax)
+{
+    QMngHandlerPrivate *pMydata = reinterpret_cast<QMngHandlerPrivate *>(mng_get_userdata(hMNG));
+    if (iTermaction == 3)
+        pMydata->iterCount = iItermax;
+    return MNG_TRUE;
+}
+
+static mng_bool mytrace(mng_handle,
+                        mng_int32   iFuncnr,
+                        mng_int32   iFuncseq,
+                        mng_pchar   zFuncname)
+{
+    qDebug("mng trace: iFuncnr: %d iFuncseq: %d zFuncname: %s", iFuncnr, iFuncseq, zFuncname);
+    return MNG_TRUE;
+}
+
+QMngHandlerPrivate::QMngHandlerPrivate(QMngHandler *q_ptr)
+    : haveReadNone(true), haveReadAll(false), elapsed(0), nextDelay(0), iterCount(1),
+      frameIndex(-1), nextIndex(0), frameCount(0), q_ptr(q_ptr)
+{
+    iStyle = (QSysInfo::ByteOrder == QSysInfo::LittleEndian) ? MNG_CANVAS_BGRA8 : MNG_CANVAS_ARGB8;
+    // Initialize libmng
+    hMNG = mng_initialize((mng_ptr)this, myalloc, myfree, mytrace);
+    if (hMNG) {
+	// Set callback functions
+        mng_setcb_errorproc(hMNG, myerror);
+        mng_setcb_openstream(hMNG, myopenstream);
+        mng_setcb_closestream(hMNG, myclosestream);
+        mng_setcb_readdata(hMNG, myreaddata);
+        mng_setcb_writedata(hMNG, mywritedata);
+        mng_setcb_processheader(hMNG, myprocessheader);
+        mng_setcb_getcanvasline(hMNG, mygetcanvasline);
+        mng_setcb_refresh(hMNG, myrefresh);
+        mng_setcb_gettickcount(hMNG, mygettickcount);
+        mng_setcb_settimer(hMNG, mysettimer);
+        mng_setcb_processterm(hMNG, myprocessterm);
+        mng_set_doprogressive(hMNG, MNG_FALSE);
+	mng_set_suspensionmode(hMNG, MNG_TRUE);
+    }
+}
+
+QMngHandlerPrivate::~QMngHandlerPrivate()
+{
+    mng_cleanup(&hMNG);
+}
+
+mng_bool QMngHandlerPrivate::readData(mng_ptr pBuf, mng_uint32 iSize, mng_uint32p pRead)
+{
+    Q_Q(QMngHandler);
+    *pRead = q->device()->read((char *)pBuf, iSize);
+    return (*pRead > 0) ? MNG_TRUE : MNG_FALSE;
+}
+
+mng_bool QMngHandlerPrivate::writeData(mng_ptr pBuf, mng_uint32 iSize, mng_uint32p pWritten)
+{
+    Q_Q(QMngHandler);
+    *pWritten = q->device()->write((char *)pBuf, iSize);
+    return MNG_TRUE;
+}
+
+mng_bool QMngHandlerPrivate::processHeader(mng_uint32 iWidth, mng_uint32 iHeight)
+{
+    if (mng_set_canvasstyle(hMNG, iStyle) != MNG_NOERROR)
+        return MNG_FALSE;
+    image = QImage(iWidth, iHeight, QImage::Format_ARGB32);
+    image.fill(0);
+    return MNG_TRUE;
+}
+
+bool QMngHandlerPrivate::getNextImage(QImage *result)
+{
+    mng_retcode ret;
+    if (haveReadNone) {
+        haveReadNone = false;
+        ret = mng_readdisplay(hMNG);
+    } else {
+        ret = mng_display_resume(hMNG);
+    }
+    if ((MNG_NOERROR == ret) || (MNG_NEEDTIMERWAIT == ret)) {
+        *result = image;
+        image.fill(0);
+        frameIndex = nextIndex++;
+        if (haveReadAll && (frameCount == 0))
+            frameCount = nextIndex;
+        return true;
+    }
+    return false;
+}
+
+bool QMngHandlerPrivate::writeImage(const QImage &image)
+{
+    mng_reset(hMNG);
+    if (mng_create(hMNG) != MNG_NOERROR)
+	return false;
+
+    this->image = image.convertToFormat(QImage::Format_ARGB32);
+    int w = image.width();
+    int h = image.height();
+
+    if (
+    // width, height, ticks, layercount, framecount, playtime, simplicity
+         (mng_putchunk_mhdr(hMNG, w, h, 1000, 0, 0, 0, 7) == MNG_NOERROR) &&
+    // termination_action, action_after_iterations, delay, iteration_max
+         (mng_putchunk_term(hMNG, 3, 0, 1, 0x7FFFFFFF) == MNG_NOERROR) &&
+    // width, height, bitdepth, colortype, compression, filter, interlace
+         (mng_putchunk_ihdr(hMNG, w, h, 8, 6, 0, 0, 0) == MNG_NOERROR) &&
+    // width, height, colortype, bitdepth, compression, filter, interlace, canvasstyle, getcanvasline
+         (mng_putimgdata_ihdr(hMNG, w, h, 6, 8, 0, 0, 0, iStyle, mygetcanvasline) == MNG_NOERROR) &&
+         (mng_putchunk_iend(hMNG) == MNG_NOERROR) &&
+         (mng_putchunk_mend(hMNG) == MNG_NOERROR) &&
+         (mng_write(hMNG) == MNG_NOERROR)
+        )
+        return true;
+    return false;
+}
+
+int QMngHandlerPrivate::currentImageNumber() const
+{
+//    return mng_get_currentframe(hMNG) % imageCount(); not implemented, apparently
+    return frameIndex;
+}
+
+int QMngHandlerPrivate::imageCount() const
+{
+//    return mng_get_totalframes(hMNG); not implemented, apparently
+    if (haveReadAll)
+        return frameCount;
+    return 0; // Don't know
+}
+
+bool QMngHandlerPrivate::jumpToImage(int imageNumber)
+{
+    if (imageNumber == nextIndex)
+        return true;
+
+    if ((imageNumber == 0) && haveReadAll && (nextIndex == frameCount)) {
+        // Loop!
+        nextIndex = 0;
+        return true;
+    }
+    if (mng_display_freeze(hMNG) == MNG_NOERROR) {
+        if (mng_display_goframe(hMNG, imageNumber) == MNG_NOERROR) {
+            nextIndex = imageNumber;
+            return true;
+        }
+    }
+    return false;
+}
+
+bool QMngHandlerPrivate::jumpToNextImage()
+{
+    return jumpToImage((currentImageNumber()+1) % imageCount());
+}
+
+int QMngHandlerPrivate::nextImageDelay() const
+{
+    return nextDelay;
+}
+
+bool QMngHandlerPrivate::setBackgroundColor(const QColor &color)
+{
+    mng_uint16 iRed = (mng_uint16)(color.red() << 8);
+    mng_uint16 iBlue = (mng_uint16)(color.blue() << 8);
+    mng_uint16 iGreen = (mng_uint16)(color.green() << 8);
+    return (mng_set_bgcolor(hMNG, iRed, iBlue, iGreen) == MNG_NOERROR);
+}
+
+QColor QMngHandlerPrivate::backgroundColor() const
+{
+    mng_uint16 iRed;
+    mng_uint16 iBlue;
+    mng_uint16 iGreen;
+    if (mng_get_bgcolor(hMNG, &iRed, &iBlue, &iGreen) == MNG_NOERROR)
+        return QColor((iRed >> 8) & 0xFF, (iGreen >> 8) & 0xFF, (iBlue >> 8) & 0xFF);
+    return QColor();
+}
+
+QMngHandler::QMngHandler()
+    : d_ptr(new QMngHandlerPrivate(this))
+{
+}
+
+QMngHandler::~QMngHandler()
+{
+    Q_D(QMngHandler);
+    delete d;
+}
+
+/*! \reimp */
+bool QMngHandler::canRead() const
+{
+    Q_D(const QMngHandler);
+    if (!d->haveReadNone)
+	return (!d->haveReadAll || (d->haveReadAll && (d->nextIndex < d->frameCount)));
+
+    if (canRead(device())) {
+        setFormat("mng");
+        return true;
+    }
+    return false;
+}
+
+/*! \internal */
+bool QMngHandler::canRead(QIODevice *device)
+{
+    if (!device) {
+        qWarning("QMngHandler::canRead() called with no device");
+        return false;
+    }
+
+    return device->peek(8) == "\x8A\x4D\x4E\x47\x0D\x0A\x1A\x0A";
+}
+
+/*! \reimp */
+QByteArray QMngHandler::name() const
+{
+    return "mng";    
+}
+
+/*! \reimp */
+bool QMngHandler::read(QImage *image)
+{
+    Q_D(QMngHandler);
+    return canRead() ? d->getNextImage(image) : false;
+}
+
+/*! \reimp */
+bool QMngHandler::write(const QImage &image)
+{
+    Q_D(QMngHandler);
+    return d->writeImage(image);
+}
+
+/*! \reimp */
+int QMngHandler::currentImageNumber() const
+{
+    Q_D(const QMngHandler);
+    return d->currentImageNumber();
+}
+
+/*! \reimp */
+int QMngHandler::imageCount() const
+{
+    Q_D(const QMngHandler);
+    return d->imageCount();
+}
+
+/*! \reimp */
+bool QMngHandler::jumpToImage(int imageNumber)
+{
+    Q_D(QMngHandler);
+    return d->jumpToImage(imageNumber);
+}
+
+/*! \reimp */
+bool QMngHandler::jumpToNextImage()
+{
+    Q_D(QMngHandler);
+    return d->jumpToNextImage();
+}
+
+/*! \reimp */
+int QMngHandler::loopCount() const
+{
+    Q_D(const QMngHandler);
+    if (d->iterCount == 0x7FFFFFFF)
+        return -1; // infinite loop
+    return d->iterCount-1;
+}
+
+/*! \reimp */
+int QMngHandler::nextImageDelay() const
+{
+    Q_D(const QMngHandler);
+    return d->nextImageDelay();
+}
+
+/*! \reimp */
+QVariant QMngHandler::option(ImageOption option) const
+{
+    Q_D(const QMngHandler);
+    if (option == QImageIOHandler::Animation)
+        return true;
+    else if (option == QImageIOHandler::BackgroundColor)
+        return d->backgroundColor();
+    return QVariant();
+}
+
+/*! \reimp */
+void QMngHandler::setOption(ImageOption option, const QVariant & value)
+{
+    Q_D(QMngHandler);
+    if (option == QImageIOHandler::BackgroundColor)
+        d->setBackgroundColor(qVariantValue<QColor>(value));
+}
+
+/*! \reimp */
+bool QMngHandler::supportsOption(ImageOption option) const
+{
+    if (option == QImageIOHandler::Animation)
+        return true;
+    else if (option == QImageIOHandler::BackgroundColor)
+        return true;
+    return false;
+}
+
+QT_END_NAMESPACE