src/hbcore/gui/hbglobalstatusbar.cpp
changeset 30 80e4d18b72f5
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hbcore/gui/hbglobalstatusbar.cpp	Mon Oct 04 00:38:12 2010 +0300
@@ -0,0 +1,200 @@
+/****************************************************************************
+**
+** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (developer.feedback@nokia.com)
+**
+** This file is part of the HbCore module of the UI Extensions for Mobile.
+**
+** 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at developer.feedback@nokia.com.
+**
+****************************************************************************/
+
+#include "hbglobalstatusbar_r.h"
+#include "hbsplashdefs_p.h"
+#include <QScopedPointer>
+
+/*!
+  \class HbGlobalStatusBar
+
+  \brief Provides access and change notifications for the image (screenshot) of
+  the statusbar rendered in background by the hbsplashgenerator process.
+
+  \internal
+*/
+
+#ifdef Q_OS_SYMBIAN
+#include <e32base.h>
+#include <fbs.h>
+#include <e32property.h>
+
+class BitmapHandleWatcher : public CActive
+{
+public:
+    BitmapHandleWatcher(HbSplashStatusBarKeys key, TCallBack callback);
+    ~BitmapHandleWatcher();
+    void DoCancel();
+    void RunL();
+    TInt value();
+
+private:
+    RProperty mProperty;
+    TCallBack mCallback;
+};
+
+BitmapHandleWatcher::BitmapHandleWatcher(HbSplashStatusBarKeys key, TCallBack callback)
+    : CActive(EPriorityStandard)
+{
+    CActiveScheduler::Add(this);
+    if (mProperty.Attach(hbsplash_server_uid3, key) == KErrNone) {
+        mCallback = callback;
+        mProperty.Subscribe(iStatus);
+        SetActive();
+    }
+}
+
+BitmapHandleWatcher::~BitmapHandleWatcher()
+{
+    Cancel();
+    mProperty.Close();
+}
+
+void BitmapHandleWatcher::DoCancel()
+{
+    mProperty.Cancel();
+}
+
+void BitmapHandleWatcher::RunL()
+{
+    if (iStatus != KErrCancel) {
+        mProperty.Subscribe(iStatus);
+        SetActive();
+        if (mCallback.iFunction) {
+            mCallback.CallBack();
+        }
+    }
+}
+
+TInt BitmapHandleWatcher::value()
+{
+    TInt v = 0;
+    mProperty.Get(v);
+    return v;
+}
+
+class HbGlobalStatusBarPrivate
+{
+public:
+    HbGlobalStatusBarPrivate(HbGlobalStatusBar *q);
+    ~HbGlobalStatusBarPrivate();
+    static TInt splashImageChanged(TAny *param);
+    TInt bitmapHandle(Qt::Orientation orientation);
+    CFbsBitmap **storedBitmap(Qt::Orientation orientation);
+
+    CFbsBitmap *mBmpPrt;
+    CFbsBitmap *mBmpLsc;
+    QScopedPointer<BitmapHandleWatcher> mPrt;
+    QScopedPointer<BitmapHandleWatcher> mLsc;
+};
+
+HbGlobalStatusBarPrivate::HbGlobalStatusBarPrivate(HbGlobalStatusBar *q)
+    : mBmpPrt(0), mBmpLsc(0)
+{
+    // Don't emit changed() twice, it's enough to have one callback because both
+    // statusbars are regenerated for every change. Note however that passing
+    // TCallBack() would cause a compiler warning with armcc because iPtr is
+    // left uninitialized, so specify 0 explicitly.
+    mPrt.reset(new BitmapHandleWatcher(HbSplashSbBitmapPrtKey, TCallBack(0, 0)));
+    mLsc.reset(new BitmapHandleWatcher(HbSplashSbBitmapLscKey, TCallBack(splashImageChanged, q)));
+}
+
+HbGlobalStatusBarPrivate::~HbGlobalStatusBarPrivate()
+{
+    delete mBmpPrt;
+    delete mBmpLsc;
+}
+
+TInt HbGlobalStatusBarPrivate::splashImageChanged(TAny *param)
+{
+    emit static_cast<HbGlobalStatusBar *>(param)->changed();
+    return 0;
+}
+
+TInt HbGlobalStatusBarPrivate::bitmapHandle(Qt::Orientation orientation)
+{
+    return orientation == Qt::Vertical ? mPrt->value() : mLsc->value();
+}
+
+CFbsBitmap **HbGlobalStatusBarPrivate::storedBitmap(Qt::Orientation orientation)
+{
+    return orientation == Qt::Vertical ? &mBmpPrt : &mBmpLsc;
+}
+
+#endif
+
+HbGlobalStatusBar::HbGlobalStatusBar(QObject *parent)
+    : QObject(parent), d(0)
+{
+#ifdef Q_OS_SYMBIAN
+    d = new HbGlobalStatusBarPrivate(this);
+#endif
+}
+
+HbGlobalStatusBar::~HbGlobalStatusBar()
+{
+#ifdef Q_OS_SYMBIAN
+    delete d;
+#endif
+}
+
+QImage HbGlobalStatusBar::getImage(Qt::Orientation orientation)
+{
+#ifdef Q_OS_SYMBIAN
+    QImage result;
+    TInt handle = d->bitmapHandle(orientation);
+    CFbsBitmap **store = d->storedBitmap(orientation);
+    if (!*store || (*store)->Handle() != handle) {
+        delete *store;
+        *store = 0;
+        CFbsBitmap *bmp = new CFbsBitmap;
+        if (bmp->Duplicate(handle) == KErrNone) {
+            *store = bmp;
+        } else {
+            qWarning("HbGlobalStatusBar: Duplicate() failed for handle %d", handle);
+            delete bmp;
+        }
+    }
+    if (*store) {
+        CFbsBitmap *bmp = *store;
+        // Make a deep copy because the bitmap content may change at any time.
+        uchar *src = reinterpret_cast<uchar *>(bmp->DataAddress());
+        TSize sz = bmp->SizeInPixels();
+        int srcBpl = CFbsBitmap::ScanLineLength(sz.iWidth, bmp->DisplayMode());
+        QImage image(sz.iWidth, sz.iHeight, QImage::Format_ARGB32_Premultiplied);
+        uchar *dst = image.bits();
+        if (srcBpl == image.bytesPerLine() && bmp->DisplayMode() == EColor16MAP) {
+            qMemCopy(dst, src, sz.iHeight * image.bytesPerLine());
+            result = image;
+        } else {
+            qWarning("HbGlobalStatusBar: Bitmap mismatch");
+        }
+    }
+    return result;
+#else
+    Q_UNUSED(orientation);
+    return QImage();
+#endif
+}