--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/eswt_akn/org.eclipse.ercp.swt.s60/native/inc/swtimagedataloader.h Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,161 @@
+/*******************************************************************************
+ * Copyright (c) 2005, 2010 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Nokia Corporation - S60 implementation
+ *******************************************************************************/
+
+
+#ifndef SWTIMAGEDATALOADER_H
+#define SWTIMAGEDATALOADER_H
+
+
+#include "eswtgraphics.h"
+
+
+class CImageDecoder;
+class CImageEncoder;
+class TFrameInfo;
+
+
+/**
+ * CSwtImageDataLoader
+ * Class used to encode and decode images (PNG, GIF, JPG).
+ * @lib eswt
+ */
+NONSHARABLE_CLASS(CSwtImageDataLoader)
+ : public CActive
+ , public MSwtImageDataLoader
+{
+// Own methods
+public:
+
+ /**
+ * Two phase constructor.
+ * Create the native object in charge of load and save image from/to a stream or a file.
+ */
+ static CSwtImageDataLoader* NewL();
+
+// From MSwtImageDataLoader
+public:
+ void EncodeImageToFileL(MSwtImageData& aImageData,
+ TInt aFormat, const TDesC& aDestination);
+ HBufC8* EncodeImageToStreamL(MSwtImageData& aImageData, TInt aFormat);
+ void DecodeImageL(const TDesC& aFileName);
+ void DecodeWholeImageFromBufferL(const TDesC8& aBuffer);
+ void DecodeImageFromBufferL(const TDesC8& aBuffer);
+ void AppendDataL(const TDesC8& aBuffer); //loading
+ CSwtImageDataArray* GetImageData();
+ void Dispose();
+ TInt GetLogicalScreenHeight();
+ TInt GetLogicalScreenWidth();
+
+// Own methods
+private:
+ TBool DecodeNextFrameL(); //starting
+ void DecodeFrameL(TInt aIndexOfFrame); //starting
+
+protected:
+ /**
+ * Destructor.
+ */
+ ~CSwtImageDataLoader();
+
+private:
+ CSwtImageDataLoader();
+ void ConstructL();
+ void SetImageDataL(MSwtImageData& aImageData);
+
+ /**
+ * Extract the ImageData from the members bitmap.
+ */
+ void ExtractImagedataL();
+
+ /**
+ * Build the mask bitmap if needed.
+ */
+ void SetMaskL(const TFrameInfo& aInfo);
+
+ /**
+ * Ensure that the bitmap resources are freed before
+ * reusing the decoder (for multi frame image).
+ */
+ void FreeBitmaps();
+
+ /**
+ * Free buffers.
+ */
+ void FreeBuffers();
+
+ /**
+ * Set the logical values for height or width equal to
+ * the values of the greatest frame (for height or width).
+ */
+ void CSwtImageDataLoader::SetLogicalScreenValues(const TFrameInfo& aInfo);
+
+ /**
+ * Set the x and y coordinates of the image in the current frame.
+ */
+ void SetFrameInfosL(const TFrameInfo& aInfo);
+
+ /**
+ * Leaves if a leave happens. Transforms the leave's code into one expected by eSWT.
+ * A leave code that is not handled in the function causes
+ * the leave to be performed with the unchanged leave code.
+ * @param aLeaveCode : the leave code to convert(if equal to KerrNone : do not leave)
+ */
+ void LeaveIfErrorFromICLDecoderL(TInt aLeaveCode) const;
+
+
+ /**
+ * Leaves if a leave happens. Transforms the leave's code into one expected by eSWT.
+ * A leave code that is not handled in the function causes
+ * the leave to be performed with the unchanged leave code.
+ * @param aLeaveCode : the leave code to convert(if equal to KerrNone : do not leave)
+ */
+ void LeaveIfErrorFromICLEncoderL(TInt aLeaveCode) const;
+
+ /**
+ * Verify the file pointed by destination can be created and does not already exists.
+ * @param aDestination : The file that is checked
+ * @param aFs : a RFs object.
+ */
+ void CheckDestinationL(const TDesC& aDestination, const RFs& aFs) const;
+
+ const TDesC8& GetMimeType(TSwtImageType aFormat) const;
+
+// From CActive
+ void RunL();
+ void DoCancel();
+ TInt RunError(TInt aError);
+
+private:
+ CFbsBitmap* iMask; // The possible mask of the image
+ CFbsBitmap* iBitmap; // The image bitmap (without its mask)
+ MSwtImageData::TInfo iInfo;
+ TSize iLogicalScreenValues; // LogicalScreenHeight and Width
+ TPoint iImageCoordinates; // The coordinates of the frame within the screen in pixels.
+ TInt iDelay; // The delay time of a gif
+ TSwtGifDisposal iDisposal; // The disposal method of a gif image
+ CImageDecoder* iDecoder; // Current decoder. Is a member to be persistent in order to be used asynchronously
+ MSwtImageData* iImageData; // The imageData built when the conversion is finished
+ CSwtImageDataArray* iImageDataArray; // The imageData array built step by step depending on how many images are stored in the image file/stream
+ TInt iNextFrameToDecode; // The next frame we will decode
+ HBufC8* iBuffer; // The data to decode when loading or the data encoded when saving
+ TBool iStartDecodingAnother;// ETrue if a frame has just been decoded and ready to decode another frame.
+ TPtr8 iDesc; // The descriptor furnished to the Convert function
+ TInt iResult; // The code returned to the caller.
+ TBool iWholeImageAtOnce; // ETrue when decoding whole image in one shot
+ CImageEncoder* iEncoder; // Current encoder. Is a member to be persistent in order to be used asynchronously
+ CActiveScheduler* iActiveScheduler; // Installed active scheduler.
+ RFs iFs; // File server session.
+ TBool iIsGif;
+ TRequestStatus* iImageStatus;
+};
+
+
+#endif // SWTIMAGEDATALOADER_H