--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/commandhandlers/commoncommandhandlers/src/glxcommandhandlerrotate.cpp Tue Aug 31 15:14:51 2010 +0300
@@ -0,0 +1,202 @@
+/*
+* 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:
+*
+*/
+
+#include <mpxcollectionpath.h>
+#include <mglxmedialist.h>
+#include <glxcommandfactory.h>
+#include <glxcommandhandlerrotate.h>
+#include <ExifRead.h>
+#include "OstTraceDefinitions.h"
+#ifdef OST_TRACE_COMPILER_IN_USE
+#include "glxcommandhandlerrotateTraces.h"
+#endif
+
+
+GlxCommandHandlerRotate::GlxCommandHandlerRotate()
+ {
+ OstTraceFunctionEntry0( GLXCOMMANDHANDLERROTATE_GLXCOMMANDHANDLERROTATE_ENTRY );
+ OstTraceFunctionExit0( GLXCOMMANDHANDLERROTATE_GLXCOMMANDHANDLERROTATE_EXIT );
+ }
+
+GlxCommandHandlerRotate::~GlxCommandHandlerRotate()
+ {
+ OstTraceFunctionEntry0( DUP1_GLXCOMMANDHANDLERROTATE_GLXCOMMANDHANDLERROTATE_ENTRY );
+ OstTraceFunctionExit0( DUP1_GLXCOMMANDHANDLERROTATE_GLXCOMMANDHANDLERROTATE_EXIT );
+ }
+
+CMPXCommand* GlxCommandHandlerRotate::CreateCommandL(TInt aCommandId,
+ MGlxMediaList& /*aMediaList*/, TBool& aConsume) const
+ {
+ OstTraceFunctionEntry0( GLXCOMMANDHANDLERROTATE_CREATECOMMANDL_ENTRY );
+ Q_UNUSED(aCommandId);
+ Q_UNUSED(aConsume);
+ OstTraceFunctionExit0( GLXCOMMANDHANDLERROTATE_CREATECOMMANDL_EXIT );
+ return NULL;
+ }
+
+void GlxCommandHandlerRotate::DoExecuteCommandL(TInt aCommandId,
+ MGlxMediaList& aMediaList, TBool& aConsume)
+ {
+ OstTraceFunctionEntry0( GLXCOMMANDHANDLERROTATE_DOEXECUTECOMMANDL_ENTRY );
+ Q_UNUSED(aCommandId);
+ Q_UNUSED(aConsume);
+ const TGlxMedia& item = aMediaList.Item(aMediaList.FocusIndex());
+ TFileName uri;
+ uri.Copy(item.Uri());
+ TRAPD(err,RotateImageL(uri));
+ if (err != KErrNone)
+ {
+ OstTrace0( TRACE_NORMAL, GLXCOMMANDHANDLERROTATE_DOEXECUTECOMMANDL, "GlxCommandHandlerRotate::DoExecuteCommandL Exif Update failed" );
+ }
+ OstTraceFunctionExit0( GLXCOMMANDHANDLERROTATE_DOEXECUTECOMMANDL_EXIT );
+ }
+
+void GlxCommandHandlerRotate::RotateImageL(TFileName aFileToBeRotated)
+ {
+ OstTraceFunctionEntry0( GLXCOMMANDHANDLERROTATE_ROTATEIMAGEL_ENTRY );
+ //Start an IFS session
+ //File system
+ User::LeaveIfError(iFs.Connect());
+ //first initialize the Exif Writer which is responsible for reading and writing the Exif Data
+ //Will leave here itself in cases where the Exif data is absent
+ InitializeExifWriterL(aFileToBeRotated);
+ //read the Orientation tag stored in the Exif Data
+ TUint16 initialOrientation = ReadImageOrientationL();
+ //as the image is rotated to 90 degrees clockwise calculate the new orientation by adding that angle
+ TUint16 finalOrientation = CalculateFinalOrientationL(initialOrientation);
+ // Set the Final Orientation on the file
+ SetImageOrientationL(finalOrientation);
+ // Clear the sessions acquired
+ DestroyExifWriter();
+ //close the File Session
+ iFs.Close();
+ OstTraceFunctionExit0( GLXCOMMANDHANDLERROTATE_ROTATEIMAGEL_EXIT );
+ }
+
+void GlxCommandHandlerRotate::InitializeExifWriterL(
+ TFileName aFileToBeRotated)
+ {
+ OstTraceFunctionEntry0( GLXCOMMANDHANDLERROTATE_INITIALIZEEXIFWRITERL_ENTRY );
+ User::LeaveIfError(iFileHandle.Open(iFs, aFileToBeRotated, EFileWrite));
+ TInt filesize;
+ User::LeaveIfError(iFileHandle.Size(filesize));
+ iExifData = HBufC8::NewL(filesize);
+ TPtr8 ptr(iExifData->Des());
+ User::LeaveIfError(iFileHandle.Read(ptr));
+ iExifWriter = CExifModify::NewL(*iExifData, CExifModify::EModify,
+ CExifModify::ENoJpegParsing);
+ OstTraceFunctionExit0( GLXCOMMANDHANDLERROTATE_INITIALIZEEXIFWRITERL_EXIT );
+ }
+
+TUint16 GlxCommandHandlerRotate::ReadImageOrientationL()
+{
+ OstTraceFunctionEntry0( GLXCOMMANDHANDLERROTATE_READIMAGEORIENTATIONL_ENTRY );
+ TUint16 initialOrientation;
+ const CExifRead* exifReader = iExifWriter->Reader(); //not owned
+ User::LeaveIfError(exifReader->GetOrientation(initialOrientation));
+ OstTrace1( TRACE_NORMAL, GLXCOMMANDHANDLERROTATE_READIMAGEORIENTATIONL, "GlxCommandHandlerRotate::ReadImageOrientationL;initial orientation=%d", initialOrientation );
+ OstTraceFunctionExit0( GLXCOMMANDHANDLERROTATE_READIMAGEORIENTATIONL_EXIT );
+ return (initialOrientation);
+}
+
+TUint16 GlxCommandHandlerRotate::CalculateFinalOrientationL(
+ TUint16 aInitialOrientation)
+ {
+ OstTraceFunctionEntry0( GLXCOMMANDHANDLERROTATE_CALCULATEFINALORIENTATIONL_ENTRY );
+ /*
+ * possible orientation state with angles for rotation
+ * Possible Angles 0 - 90 - 180 - 270
+ * Possible states 1 - 8 - 3 - 6 without a Flip
+ * Possible states 2 - 7 - 4 - 5 when Flip is on
+ */
+ TUint16 finalOrientation = aInitialOrientation;
+ if (aInitialOrientation > 8)
+ {
+ //invalid orientation passed Leave
+ User::Leave(KErrCorrupt);
+ }
+ TInt rotOffset = 1;
+ TInt isOrientationOdd = aInitialOrientation % 2;
+ TInt initStateIndex = 0;
+ TInt finalStateIndex = 0;
+ //Setting the orientation states for the initial unflipped orientation combinations
+ TInt orientationStateArray[] =
+ {
+ 1, 8, 3, 6
+ };
+ //Seting the index for current orientation
+ if (aInitialOrientation < 3)
+ {
+ initStateIndex = 0;
+ }
+ else if (aInitialOrientation >= 3 && aInitialOrientation < 5)
+ {
+ initStateIndex = 2;
+ }
+ else if (aInitialOrientation >= 5 && aInitialOrientation < 7)
+ {
+ initStateIndex = 3;
+ }
+ else if (aInitialOrientation >= 7 && aInitialOrientation <= 8)
+ {
+ initStateIndex = 1;
+ }
+ //Calculating the final orientation using the cyclic orientationStateArray.
+ //folding final index so that it behaves like a cyclic machine
+ finalStateIndex = (initStateIndex + rotOffset) % 4;
+ finalOrientation = orientationStateArray[finalStateIndex];
+ //Checking if a Flip was present
+ if (aInitialOrientation > 4 && isOrientationOdd)
+ {
+ finalOrientation -= 1;
+ }
+ if (aInitialOrientation < 5 && !isOrientationOdd)
+ {
+ finalOrientation += 1;
+ }
+ OstTrace1( TRACE_NORMAL, GLXCOMMANDHANDLERROTATE_CALCULATEFINALORIENTATIONL, "GlxCommandHandlerRotate::CalculateFinalOrientationL;finalOrientation=%d", finalOrientation );
+ OstTraceFunctionExit0( GLXCOMMANDHANDLERROTATE_CALCULATEFINALORIENTATIONL_EXIT );
+ return finalOrientation;
+ }
+
+void GlxCommandHandlerRotate::SetImageOrientationL(TUint16 aFinalOrientation)
+ {
+ OstTraceFunctionEntry0( GLXCOMMANDHANDLERROTATE_SETIMAGEORIENTATIONL_ENTRY );
+ iExifWriter->SetOrientationL(aFinalOrientation);
+ HBufC8* modifiedexifData = NULL;
+ modifiedexifData = iExifWriter->WriteDataL(iExifData->Des());
+ User::LeaveIfError(iFileHandle.Write(0, modifiedexifData->Des()));
+ delete modifiedexifData;
+ OstTraceFunctionExit0( GLXCOMMANDHANDLERROTATE_SETIMAGEORIENTATIONL_EXIT );
+ }
+
+void GlxCommandHandlerRotate::DestroyExifWriter()
+ {
+ OstTraceFunctionEntry0( GLXCOMMANDHANDLERROTATE_DESTROYEXIFWRITER_ENTRY );
+ iFileHandle.Close();
+ if (iExifData != NULL)
+ {
+ delete iExifData;
+ iExifData = NULL;
+ }
+ if (iExifWriter != NULL)
+ {
+ delete iExifWriter;
+ iExifWriter = NULL;
+ }
+ OstTraceFunctionExit0( GLXCOMMANDHANDLERROTATE_DESTROYEXIFWRITER_EXIT );
+ }