--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tstaskmonitor/screenshotplugin/src/tsscreenshotplugin.cpp	Fri Jun 11 13:58:37 2010 +0300
@@ -0,0 +1,176 @@
+/*
+* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+#include "tsscreenshotplugin.h"
+#include "tstaskmonitorglobals.h"
+#include <graphics/wsscreendevice.h>
+#include <s32mem.h>
+
+const TInt KMsgSize(5);
+const TInt KInvalidGroupId(~0);
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+CTsScreenshotPlugin* CTsScreenshotPlugin::NewL()
+{
+    //no second step construction is required here
+    //window server will initialize plugin later
+    return new(ELeave)CTsScreenshotPlugin();
+}
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+void CTsScreenshotPlugin::ConstructL(MWsGraphicDrawerEnvironment& env, 
+                                     const TGraphicDrawerId& id, 
+                                     MWsClient& owner, 
+                                     const TDesC8& /*data*/ )
+{
+    BaseConstructL(env, id, owner);
+    env.RegisterEventHandler(this, 
+                             this, 
+                             TWservCrEvent::EWindowGroupChanged |
+                             TWservCrEvent::EDeviceOrientationChanged);
+    mWindowGroupId = KInvalidGroupId;
+}
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+CTsScreenshotPlugin::~CTsScreenshotPlugin()
+{
+    Env().UnregisterEventHandler(this);
+    mCache.ResetAndDestroy();
+}
+
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+void CTsScreenshotPlugin::DoDraw(MWsGc&, const TRect&, const TDesC8&) const
+{
+    //plugin is not a real drawer
+    //no implementation required
+}
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+void CTsScreenshotPlugin::HandleMessage(const TDesC8& msg)
+{
+    TRAP_IGNORE(HandleMessageL(msg));
+}
+
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+void CTsScreenshotPlugin::HandleMessageL(const TDesC8& msg)
+{
+    TInt parsedMsg[KMsgSize];
+    RDesReadStream msgStream(msg);
+    for (TInt iter(0); iter < KMsgSize; ++iter) {
+        parsedMsg[iter] = msgStream.ReadInt32L(); 
+    }
+    
+    if (RegisterScreenshotMessage == parsedMsg[0]) { //Screenshot registeration ACK 
+        for(TInt iter(0); iter < mCache.Count(); ++iter) {
+            if (mCache[iter]->Handle() == parsedMsg[ScreenshotHandle + 1]) {
+                //bitmap is not needed no more
+                delete mCache[iter];
+                mCache.Remove(iter);
+                break;
+            }
+        }
+    }
+}
+
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+void CTsScreenshotPlugin::DoHandleEvent(const TWservCrEvent& event)
+{
+    switch (event.Type()) {
+    case TWservCrEvent::EWindowGroupChanged:
+        if (KInvalidGroupId != mWindowGroupId) {
+            TakeScreenshot(mWindowGroupId);
+        }
+        mWindowGroupId = event.WindowGroupIdentifier();
+        break;
+    case TWservCrEvent::EDeviceOrientationChanged:
+        TakeScreenshot(mWindowGroupId);
+        break;
+    }
+}
+
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+void CTsScreenshotPlugin::TakeScreenshot(TInt id)
+{
+    TRAP_IGNORE(TakeScreenshotL(id);)
+}
+
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+void CTsScreenshotPlugin::TakeScreenshotL(TInt id)
+{
+    if(0 >= Env().ScreenCount()) {
+        User::Leave(KErrCorrupt);
+    }
+    const TInt screenId(0); //use local variable in case of changing screen selection policy
+    const MWsScreenConfig* const screenConfig = 
+        Env().Screen(screenId)->ObjectInterface<MWsScreenConfig>();
+    const MWsScreenDevice* const screenDevice = 
+        static_cast<MWsScreenDevice*>(Env().Screen(screenId)->ResolveObjectInterface(MWsScreenDevice::EWsObjectInterfaceId));
+    
+    User::LeaveIfNull(screenConfig);
+    User::LeaveIfNull(screenDevice);
+    
+    //prepare destination bitmap
+    CFbsBitmap *bitmap = new (ELeave) CFbsBitmap();
+    CleanupStack::PushL(bitmap);
+    
+    
+    User::LeaveIfError(bitmap->Create(screenConfig->SizeInPixels(), 
+                                screenConfig->DisplayMode()));
+    
+    screenDevice->CopyScreenToBitmapL(bitmap, 
+                                      screenConfig->SizeInPixels());
+    
+    
+    //prepare and send message
+    TInt msg[KMsgSize] = {RegisterScreenshotMessage};
+    
+    msg[WindowsGroup + 1] = id;
+    msg[ScreenshotHandle + 1] = bitmap->Handle();
+    msg[Priority + 1] = Low;
+    msg[AdditionalParameters + 1] = 0; //unused
+    
+    const TPckgC<TInt[sizeof(msg) / sizeof(TInt)]> buf(msg);
+    
+    User::LeaveIfError(SendMessage(buf));
+    
+    mCache.AppendL(bitmap);
+    CleanupStack::Pop(bitmap);
+    
+}
+