/*

* Copyright (c) 2009 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: JNI implementation of CanvasGraphicsItemPainter class

*

*/

// INTERNAL INCLUDES

#include "javax_microedition_lcdui_CanvasGraphicsItemPainter.h"

#include "CMIDCanvas.h" // userinclude in nokialcdui.component

// EXTERNAL INCLUDES

#include <MMIDCanvasGraphicsItemPainter.h>

#include <CMIDToolkit.h>

#include <jutils.h>

#include <jdebug.h>

LOCAL_C void CreateNativePeerL

(

    CMIDToolkit* aToolkit,

    jobject aPeer,

    TInt* aNativePeerHandle,

    int aWidth,

    int aHeight

)

{

    // Get LCDUI component factory.

    MMIDComponentFactory* factory = aToolkit->ComponentFactory();

    // Create new text canvas graphics item painter component.

    MMIDCanvasGraphicsItemPainter* itemPainter =

        factory->CreateCanvasGraphicsItemPainterL(aWidth, aHeight);

    // Put the component to cleanup stack during the register operation.

    CleanupDisposePushL(itemPainter);

    // Register component to the LCDUI.

    *aNativePeerHandle = aToolkit->RegisterComponentL(itemPainter, aPeer);

    // Component can be popped from the cleanup stack.

    CleanupPopComponent(itemPainter);

}

JNIEXPORT jint JNICALL

Java_javax_microedition_lcdui_CanvasGraphicsItemPainter__1createNativePeer

(

    JNIEnv* aJniEnv,

    jobject aPeer,

    jint aToolkitHandle,

    jint aWidth,

    jint aHeight

)

{

    CMIDToolkit* toolkit = JavaUnhand<CMIDToolkit>(aToolkitHandle);

    jobject peer = aJniEnv->NewWeakGlobalRef(aPeer);

    TInt handle = -1;

    TInt err = toolkit->ExecuteTrap(

                   &CreateNativePeerL,

                   toolkit,

                   peer,

                   &handle,

                   aWidth,

                   aHeight);

    if (err != KErrNone)

    {

        // Global reference must be removed at this point if construction

        // failed for some reason.

        aJniEnv->DeleteWeakGlobalRef(static_cast<jweak>(peer));

        return err;

    }

    return handle;

}

LOCAL_C void ResetFrameBuffer

(

    MMIDCanvasGraphicsItemPainter* aPainter,

    int aPositionX,

    int aPositionY,

    int aWidth,

    int aHeight

)

{

    aPainter->ResetFrameBuffer(

        TPoint(aPositionX, aPositionY), TSize(aWidth, aHeight));

}

JNIEXPORT jint JNICALL

Java_javax_microedition_lcdui_CanvasGraphicsItemPainter__1resetFrameBuffer

(

    JNIEnv* /* aJniEnv */,

    jobject /* aPeer */,

    jint aToolkitHandle,

    jint aNativePeerHandle,

    jint aPositionX,

    jint aPositionY,

    jint aWidth,

    jint aHeight

)

{

    CMIDToolkit* toolkit = JavaUnhand< CMIDToolkit >(aToolkitHandle);

    MMIDCanvasGraphicsItemPainter* painter =

        MIDUnhandObject< MMIDCanvasGraphicsItemPainter >(aNativePeerHandle);

    TInt error = toolkit->ExecuteTrap(

                     &ResetFrameBuffer,

                     painter,

                     (TInt)aPositionX, (TInt)aPositionY,

                     (TInt)aWidth, (TInt)aHeight);

    return error;

}