1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (developer.feedback@nokia.com)

     6 **

     7 ** This file is part of the HbCore module of the UI Extensions for Mobile.

     8 **

     9 ** GNU Lesser General Public License Usage

    10 ** This file may be used under the terms of the GNU Lesser General Public

    11 ** License version 2.1 as published by the Free Software Foundation and

    12 ** appearing in the file LICENSE.LGPL included in the packaging of this file.

    13 ** Please review the following information to ensure the GNU Lesser General

    14 ** Public License version 2.1 requirements will be met:

    15 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    16 **

    17 ** In addition, as a special exception, Nokia gives you certain additional

    18 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    19 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    20 **

    21 ** If you have questions regarding the use of this file, please contact

    22 ** Nokia at developer.feedback@nokia.com.

    23 **

    24 ****************************************************************************/

    25 

    26 #include "hbglobalstatusbar_r.h"

    27 #include "hbsplashdefs_p.h"

    28 #include <QScopedPointer>

    29 

    30 /*!

    31   \class HbGlobalStatusBar

    32 

    33   \brief Provides access and change notifications for the image (screenshot) of

    34   the statusbar rendered in background by the hbsplashgenerator process.

    35 

    36   \internal

    37 */

    38 

    39 #ifdef Q_OS_SYMBIAN

    40 #include <e32base.h>

    41 #include <fbs.h>

    42 #include <e32property.h>

    43 

    44 class BitmapHandleWatcher : public CActive

    45 {

    46 public:

    47     BitmapHandleWatcher(HbSplashStatusBarKeys key, TCallBack callback);

    48     ~BitmapHandleWatcher();

    49     void DoCancel();

    50     void RunL();

    51     TInt value();

    52 

    53 private:

    54     RProperty mProperty;

    55     TCallBack mCallback;

    56 };

    57 

    58 BitmapHandleWatcher::BitmapHandleWatcher(HbSplashStatusBarKeys key, TCallBack callback)

    59     : CActive(EPriorityStandard)

    60 {

    61     CActiveScheduler::Add(this);

    62     if (mProperty.Attach(hbsplash_server_uid3, key) == KErrNone) {

    63         mCallback = callback;

    64         mProperty.Subscribe(iStatus);

    65         SetActive();

    66     }

    67 }

    68 

    69 BitmapHandleWatcher::~BitmapHandleWatcher()

    70 {

    71     Cancel();

    72     mProperty.Close();

    73 }

    74 

    75 void BitmapHandleWatcher::DoCancel()

    76 {

    77     mProperty.Cancel();

    78 }

    79 

    80 void BitmapHandleWatcher::RunL()

    81 {

    82     if (iStatus != KErrCancel) {

    83         mProperty.Subscribe(iStatus);

    84         SetActive();

    85         if (mCallback.iFunction) {

    86             mCallback.CallBack();

    87         }

    88     }

    89 }

    90 

    91 TInt BitmapHandleWatcher::value()

    92 {

    93     TInt v = 0;

    94     mProperty.Get(v);

    95     return v;

    96 }

    97 

    98 class HbGlobalStatusBarPrivate

    99 {

   100 public:

   101     HbGlobalStatusBarPrivate(HbGlobalStatusBar *q);

   102     ~HbGlobalStatusBarPrivate();

   103     static TInt splashImageChanged(TAny *param);

   104     TInt bitmapHandle(Qt::Orientation orientation);

   105     CFbsBitmap **storedBitmap(Qt::Orientation orientation);

   106 

   107     CFbsBitmap *mBmpPrt;

   108     CFbsBitmap *mBmpLsc;

   109     QScopedPointer<BitmapHandleWatcher> mPrt;

   110     QScopedPointer<BitmapHandleWatcher> mLsc;

   111 };

   112 

   113 HbGlobalStatusBarPrivate::HbGlobalStatusBarPrivate(HbGlobalStatusBar *q)

   114     : mBmpPrt(0), mBmpLsc(0)

   115 {

   116     // Don't emit changed() twice, it's enough to have one callback because both

   117     // statusbars are regenerated for every change. Note however that passing

   118     // TCallBack() would cause a compiler warning with armcc because iPtr is

   119     // left uninitialized, so specify 0 explicitly.

   120     mPrt.reset(new BitmapHandleWatcher(HbSplashSbBitmapPrtKey, TCallBack(0, 0)));

   121     mLsc.reset(new BitmapHandleWatcher(HbSplashSbBitmapLscKey, TCallBack(splashImageChanged, q)));

   122 }

   123 

   124 HbGlobalStatusBarPrivate::~HbGlobalStatusBarPrivate()

   125 {

   126     delete mBmpPrt;

   127     delete mBmpLsc;

   128 }

   129 

   130 TInt HbGlobalStatusBarPrivate::splashImageChanged(TAny *param)

   131 {

   132     emit static_cast<HbGlobalStatusBar *>(param)->changed();

   133     return 0;

   134 }

   135 

   136 TInt HbGlobalStatusBarPrivate::bitmapHandle(Qt::Orientation orientation)

   137 {

   138     return orientation == Qt::Vertical ? mPrt->value() : mLsc->value();

   139 }

   140 

   141 CFbsBitmap **HbGlobalStatusBarPrivate::storedBitmap(Qt::Orientation orientation)

   142 {

   143     return orientation == Qt::Vertical ? &mBmpPrt : &mBmpLsc;

   144 }

   145 

   146 #endif

   147 

   148 HbGlobalStatusBar::HbGlobalStatusBar(QObject *parent)

   149     : QObject(parent), d(0)

   150 {

   151 #ifdef Q_OS_SYMBIAN

   152     d = new HbGlobalStatusBarPrivate(this);

   153 #endif

   154 }

   155 

   156 HbGlobalStatusBar::~HbGlobalStatusBar()

   157 {

   158 #ifdef Q_OS_SYMBIAN

   159     delete d;

   160 #endif

   161 }

   162 

   163 QImage HbGlobalStatusBar::getImage(Qt::Orientation orientation)

   164 {

   165 #ifdef Q_OS_SYMBIAN

   166     QImage result;

   167     TInt handle = d->bitmapHandle(orientation);

   168     CFbsBitmap **store = d->storedBitmap(orientation);

   169     if (!*store || (*store)->Handle() != handle) {

   170         delete *store;

   171         *store = 0;

   172         CFbsBitmap *bmp = new CFbsBitmap;

   173         if (bmp->Duplicate(handle) == KErrNone) {

   174             *store = bmp;

   175         } else {

   176             qWarning("HbGlobalStatusBar: Duplicate() failed for handle %d", handle);

   177             delete bmp;

   178         }

   179     }

   180     if (*store) {

   181         CFbsBitmap *bmp = *store;

   182         // Make a deep copy because the bitmap content may change at any time.

   183         uchar *src = reinterpret_cast<uchar *>(bmp->DataAddress());

   184         TSize sz = bmp->SizeInPixels();

   185         int srcBpl = CFbsBitmap::ScanLineLength(sz.iWidth, bmp->DisplayMode());

   186         QImage image(sz.iWidth, sz.iHeight, QImage::Format_ARGB32_Premultiplied);

   187         uchar *dst = image.bits();

   188         if (srcBpl == image.bytesPerLine() && bmp->DisplayMode() == EColor16MAP) {

   189             qMemCopy(dst, src, sz.iHeight * image.bytesPerLine());

   190             result = image;

   191         } else {

   192             qWarning("HbGlobalStatusBar: Bitmap mismatch");

   193         }

   194     }

   195     return result;

   196 #else

   197     Q_UNUSED(orientation);

   198     return QImage();

   199 #endif

   200 }