--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/svgtopt/SVG/SVGEngine/inc/Svgdecoder.h Wed Nov 03 18:56:10 2010 +0200
@@ -0,0 +1,386 @@
+/*
+* Copyright (c) 2003 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: SVG Implementation header file
+ *
+*/
+
+
+#ifndef SVGDECODER_H
+#define SVGDECODER_H
+
+#include <stdio.h>
+#include <e32std.h>
+#include <string.h>
+#include <e32base.h>
+#include <f32file.h>
+#include <s32file.h>
+
+#include "SVGPaintCssValueImpl.h"
+#include "SVGPathElementImpl.h"
+#include "GfxGeneralPath.h"
+#include "SVGSvgElementImpl.h"
+#include "SVGImageElementImpl.h"
+#include "SVGDocumentImpl.h"
+#include "SVGErrorImpl.h"
+
+enum TGfxEncodedSegType
+ {
+ EGfxEncodedSegMoveTo,
+ EGfxEncodedSegLineTo,
+ EGfxEncodedSegQuadTo,
+ EGfxEncodedSegCubicTo,
+ EGfxEncodedSegClose
+ };
+
+
+class CSvgDecoder : public CBase
+{
+public:
+
+ /**
+ * Two phase constructor
+ *
+ * @since 1.0
+ * @param None
+ * @return An isntance of this class
+ */
+ static CSvgDecoder* NewL(const TDesC& aFileName);
+
+ /**
+ * Two phase constructor
+ *
+ * @since 1.0
+ * @param None
+ * @return An isntance of this class
+ */
+ static CSvgDecoder* NewL(const TDesC8& aByteData);
+
+ /**
+ * Reads a Descriptor's data
+ *
+ * @since 1.0
+ * @param
+ * @return the created descriptor
+ */
+ TDesC& DecodeTDesCLC();
+
+ /**
+ * Reads a Descriptor's data. Used only for image element with
+ * Embedde image.
+ * @since 1.0
+ * @param
+ * @return the created descriptor
+ */
+ TDesC& DecodeImageEmbeddedTDesCLC();
+
+ /**
+ * start of the decoder
+ *
+ * @since 1.0
+ * @param
+ * @return the root element
+ */
+ CSvgElementImpl* StartDecodingL(CSvgDocumentImpl *aDocument, CSvgErrorImpl& aError);
+
+
+ /**
+ * Read Data of a particular attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TInt DecodeAttributeL(const TUint16 aName);
+
+
+ /**
+ * Read Data of a presentation attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodePresentationAttributeL(const TUint16 aName);
+
+ /**
+ * Read Data of a SVGT attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeSVGTAttributeL(const TUint16 aName);
+
+ /**
+ * Read Data of a SVGT attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeAnimationAttributeL(const TUint16 aName);
+
+
+ /**
+ * Read Data of a SVGT attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeSvgElementAttributeL(const TUint16 aName);
+
+ /**
+ * Read Data of a SVGT attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeLangSpaceAttributeL(const TUint16 aName);
+
+ /**
+ * Read Data of an attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeTransformAttributeL(const TUint16 aName);
+
+ /**
+ * Read Data of an attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeTestAttributeL(const TUint16 aName);
+
+ /**
+ * Read Data of an attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeIdAndXmlAttributeL(const TUint16 aName);
+
+ /**
+ * Read Data of an attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeUriRefAttributeL(const TUint16 aName);
+
+
+
+ /**
+ * Decode attributes for Discard element
+ *
+ * @since 1.2
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeDiscardAttributeL (const TUint16& aName);
+
+
+ /**
+ * Read Data of an attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+
+ void SetPaintValueL (CCssValue*& aValue);
+
+ /**
+ * Read Data of an attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeColorCssValueL(const TUint16 aName);
+
+ /**
+ * Read Data of an attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeFloatCssValueL(const TUint16 aName);
+
+ /**
+ * Read Data of an attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeIntCssValueL(const TUint16 aName);
+
+ /**
+ * Read Data of an attribute
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeStringCssValueL(const TUint16 aName);
+
+ /**
+ * Read a Des attribute value
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeAttributeDesL(const TUint16 aName);
+
+ /**
+ * Read a path attribute value
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeAttributePathL(const TUint16 aName);
+
+ void DecodeAnimationPathL(CGfxGeneralPath*& aPath);
+
+ /**
+ * Read a float attribute value
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeAttributeFloatL(const TUint16 aName);
+
+ /**
+ * Read a Int attribute value
+ *
+ * @since 1.0
+ * @param Attribute Id
+ * @return A value that indicates success/failure
+ */
+ TBool DecodeAttributeIntL(const TUint16 aName);
+
+ // checks whether required attributes are present.
+ void CheckRequiredAttributesL(const TUint8 aName);
+
+
+ /**
+ * Destructor
+ *
+ * @since 1.0
+ * @param None
+ * @return None
+ */
+ ~CSvgDecoder();
+
+ void RemoveFalseSwitchCases();
+ void RemoveFalseElements();
+ TBool VerifyReqExReqFtrSysL( CSvgElementImpl* aElement );
+
+ /**
+ * Find out the system language for the client environment based on
+ * SVG source hint
+ *
+ * @since 1.0
+ * @param aValue - A string buffer that contains the System Language hint
+ * @return None
+ */
+ void SystemLanguage( TPtr aValue );
+
+private:
+
+ // Default constructor
+ CSvgDecoder();
+
+ /**
+ * Part of two phase construction
+ *
+ * @since 1.0
+ * @param None
+ * @return None
+ */
+ void ConstructL(const TDesC& aFileName);
+
+ // to read from a descriptor
+ void ConstructL(const TDesC8& aByteData);
+
+ /**
+ * Removes references of element. Usually called before the element is
+ * deleted.
+ *
+ * @since s60 3.2
+ * @param aElement Pointer of element that is about to be deleted.
+ * @return none
+ */
+ void RemoveInternalReferences( CSvgElementImpl* aElement );
+
+private: // Data
+
+ //All the functions in the class RReadStream that are used for reading data can Leave.
+ RReadStream iStream;
+ RFileReadStream iFStream;
+ RDesReadStream iDStream;
+ RFs iFs;
+
+ CSvgElementImpl*iRootElement; // SVG Element
+ CSvgElementImpl*iCurrentElement; // Latest discovered element
+ CSvgElementImpl*iCurrentParentElement; // Parent element for the current depth
+ CSvgDocumentImpl* iDocument; // The document object to which this SVG source is processed
+
+ // Various attributes that hold document "depth" information
+ TInt iIgnoreDepth;
+ TBool iIsSvgElement;
+
+ // Various booleans that indicate success/failure or true/false for various attributes
+ TBool iIsAnimElement;
+
+ CSvgErrorImpl* iSvgError;
+
+ /* Added to support forward references in USE, Animation and Animate elements*/
+ RPointerArray<CSvgElementImpl>* iUseElementArray;
+ RPointerArray<CSvgElementImpl>* iAnimationElementArray;
+ RPointerArray<CSvgElementImpl>* iAnimRefElementArray;
+
+ //array to keep track of switch elements
+ //so we can go back at the end of parsing and remove the elements
+ //that dont evaluate to true from memory
+ RPointerArray<CSvgElementImpl>* iSwitchElementArray;
+ RPointerArray<CSvgElementImpl>* iReqFetAttSysArray;
+
+ //variable to tell if the encoder was encoding fixed points or floats
+ TBool iIsFixPt;
+ TBool iIsRGB;
+
+ RPointerArray<CSvgImageElementImpl> iImageElements;
+ // Embedded Images Need to be kept track cause loadimage is not called on them
+ // iImageElements has only images that have uri
+ // Document needs to be set with the total images so that it can perform a
+ // callback to the client and indicate that all image loading is complete
+ TInt iEmbeddedImagesCount;
+};
+
+
+
+#endif
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