--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/svgtviewer/SvgtViewerPlugin/ScreenSaverPluginInc/SvgRenderFrameControl.h Thu Sep 09 11:17:40 2010 +0300
@@ -0,0 +1,272 @@
+/*
+* Copyright (c) 2005 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: SVGRenderFrameControl provides an implementation of a control
+* which renders SVG using RenderFrames API provided by the
+* engine.
+*
+*/
+
+
+#ifndef SVGRENDERFRAMECONTROL_H
+#define SVGRENDERFRAMECONTROL_H
+
+#include <gdi.h>
+#include <SVGRequestObserver.h>
+#include <e32base.h>
+#include <coecntrl.h>
+#include "SvgRenderFrameTimer.h"
+
+const TInt KMaxTimeDuration=2500;
+class CSvgEngineInterfaceImpl;
+class MSvgtAppObserver;
+
+
+/**
+* CSvgRenderFrameControl is a CCoeControl used to display SVGT content.
+* It makes use of RenderFrames API provided by the svg engine to get
+* the set of frame buffers and render it one by using render frame timer
+*
+* @lib SVGTScreenSaverPlugin.lib
+* @since 3.1
+*/
+class CSvgRenderFrameControl: public CCoeControl,
+ public MSvgRenderFrameTimerListener,
+ public MSvgRequestObserver
+ {
+
+ public:
+
+ /**
+ * Two-phased constructor.
+ * @since 3.1
+ */
+ static CSvgRenderFrameControl* NewL(
+ const CCoeControl* aParent,
+ RFile& aFileHandle,
+ MSvgtAppObserver* aObserver = NULL );
+
+ /**
+ * Two-phased constructor.
+ * @since 3.1
+ */
+ static CSvgRenderFrameControl* NewLC(
+ const CCoeControl* aParent,
+ RFile& aFileHandle,
+ MSvgtAppObserver* aObserver = NULL );
+
+ /**
+ * Destructor.
+ */
+ virtual ~CSvgRenderFrameControl();
+
+
+ /**
+ * From CCoeControl,
+ * @since 3.1
+ */
+ void Draw(const TRect& aRect) const;
+
+ /**
+ * From CCoeControl,
+ * @since 3.1
+ */
+ void SizeChanged();
+
+ public : // From MSvgRequestObserver
+
+ /**
+ * From MSvgRequestObserver, Method Called by Svg Engine,
+ * when the frame buffer is updated and has to be redrawn
+ * @since 3.1
+ */
+ virtual void UpdateScreen();
+
+ /**
+ * From MSvgRequestObserver, Method Called by Svg Engine,
+ * when there is a script support
+ * @since 3.1
+ */
+ virtual TBool ScriptCall( const TDesC& aScript,
+ CSvgElementImpl* aCallerElement );
+
+ /**
+ * From MSvgRequestObserver, Method Called by Svg Engine,
+ * when it encounters an image element
+ * @since 3.1
+ */
+ virtual TInt FetchImage( const TDesC& aUri, RFs& aSession,
+ RFile& aFileHandle );
+
+ TInt FetchFont( const TDesC& /* aUri */,
+ RFs& /* aSession */, RFile& /* aFileHandle */ );
+
+ /**
+ * This Method is called by the Svg engine to Get the SMIL
+ * Fit Attribute Value
+ * @since 3.1
+ */
+ virtual void GetSmilFitValue( TDes& aSmilValue );
+
+ /**
+ * This Method updates the presentation status
+ * @since 3.1
+ */
+ virtual void UpdatePresentation(const TInt32& aNoOfAnimation);
+
+ public: // From MSvgRenderFrameTimerListener
+
+ /**
+ * This function is a callback from animation timer,
+ * when there is an animation timeout.
+ * @since 3.1
+ */
+ virtual void AnimationTimeOut();
+
+
+ public: // New Function
+
+ /*
+ * Starts the timer
+ * @since 3.1
+ */
+ void SetTimer();
+
+ /*
+ * Cancels the timer
+ * @since 3.1
+ */
+ void CancelTimer();
+
+ /*
+ * Processes the command sent by the user of the control
+ * @param aCommandId - command to be processed
+ * @since 3.1
+ */
+ virtual void ProcessViewerCommandL( TInt aCommandId );
+
+ /*
+ * Gets the current index of the frame buffers
+ * @since 3.1
+ */
+ TInt GetCurrentIndex() const;
+
+ /*
+ * Sets the index of the buffer to be used
+ * @param aIndex - index to be set
+ * @since 3.1
+ */
+ void SetCurrentIndex( TInt aIndex );
+
+ /**
+ * This function initializes the svg engine.
+ * This function is also used to check the validity of the file.
+ * @param aCheckFile True if used in check file mode
+ * False otherwise
+ * @since 3.1
+ */
+ void InitializeEngineL( TBool aCheckFile,
+ MSvgRequestObserver* aObserver = NULL );
+
+
+ /**
+ * This function deletes the svg engine.
+ * @since 3.1
+ */
+ void DeleteEngine();
+
+ /**
+ * This function uses the svg engine to get the frames in an array
+ * of buffers.
+ * @since 3.1
+ */
+ TInt RenderMyFrames();
+
+ /**
+ * This function moves the index of the array
+ * of buffers.
+ * @since 3.1
+ */
+ void MoveIndex();
+
+ /**
+ * This function logs the debug message
+ * @param aMsg - message to be logged
+ * @since 3.1
+ */
+ void PrintDebugMsg( const TDesC& aMsg ) const;
+
+
+ public:
+ /**
+ * Default Constructor
+ * @since 3.1
+ */
+ CSvgRenderFrameControl( RFile& aFileHandle ,
+ MSvgtAppObserver* aObserver = NULL );
+
+
+ /**
+ * 2nd phase constructor
+ * @since 3.1
+ */
+ void ConstructL( const CCoeControl* aParent );
+
+ private:
+
+ // Pointer to the Svg Engine
+ CSvgEngineInterfaceImpl* iSvgEngine;
+
+ // Frame buffer to be given to svg engine during initialization
+ CFbsBitmap* iBmap;
+
+ // Array of bitmaps generated by RenderFrames
+ RPointerArray<CFbsBitmap> iBitmapFrames;
+
+ // Array of corresponding masks for the Bitmaps
+ RPointerArray<CFbsBitmap> iMaskFrames;
+
+ // Array of TimeInterval between frames
+ RArray<TUint> iDelayIntervals;
+
+ // file handle of the svg file to be set as ScreenSaver.
+ RFile* iFileHandle;
+
+ // Index of the bitmap in the array
+ TInt iCurrentFrame;
+
+ // Start duration to be given to RenderFrames
+ TUint iDuration;
+
+ // Handle to the Svg Dom
+ TInt iSvgDom;
+
+ // timer
+ CSvgRenderFrameTimer* iRenderFrameTimer;
+
+ // boolean to check whether it is in play or paused state
+ TBool iCanPlay;
+
+ // size of the control currently
+ TRect iRect;
+
+ // Parent Control
+ const CCoeControl* iParent;
+
+ // App observer pointer
+ MSvgtAppObserver* iAppObserver;
+
+ };
+
+#endif // SVGRENDERFRAMECONTROL_H
+// End of File