1 /*

     2 * Copyright (c) 2010 Ixonos Plc.

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - Initial contribution

    11 *

    12 * Contributors:

    13 * Ixonos Plc

    14 *

    15 * Description: 

    16 * Contrast plugin plugin base class.

    17 *

    18 */

    19 

    20 

    21 /// INCLUDES

    22 #include <eikenv.h>

    23 #include <contrast.mbg>

    24 #include "ImageEditorContrastPlugin.h"

    25 #include "SingleParamControl.h"

    26 

    27 /// CONSTANTS

    28 _LIT (KPgnResourceFile, "contrast.rsc");

    29 

    30 const long KParamMin   = -100;

    31 const long KParamMax   = 100;

    32 const long KParamStep  = 10;

    33 const long KParamDef   = 0;

    34 const TInt KContrastHSTitleIndex = 0;

    35 

    36 _LIT (KContrastTag, "contrast ");

    37 _LIT (KResourceDir, "\\resource\\apps\\");

    38 

    39 //=============================================================================

    40 EXPORT_C CImageEditorPluginBase * CreateImageEditorPlugin ()

    41 {

    42 	CImageEditorContrastPlugin * plugin = new (ELeave) CImageEditorContrastPlugin;

    43 	CleanupStack::PushL(plugin);

    44 	plugin->ConstructL();

    45 	CleanupStack::Pop(); // plugin

    46     return plugin;

    47 }

    48 

    49 //=============================================================================

    50 CImageEditorContrastPlugin::CImageEditorContrastPlugin () :

    51 CImageEditorPluginBase()

    52 {

    53 

    54 }

    55 

    56 //=============================================================================

    57 void CImageEditorContrastPlugin::ConstructL ()

    58 {

    59     CImageEditorPluginBase::ConstructL (KPgnResourcePath, KPgnResourceFile);

    60 }

    61 

    62 //=============================================================================

    63 CImageEditorContrastPlugin::~CImageEditorContrastPlugin ()

    64 {

    65     ReleasePlugin();

    66 }

    67 

    68 //=============================================================================

    69 TInt CImageEditorContrastPlugin::SetProperty (

    70 	TInt		/*aPropertyId*/,

    71 	TDesC &		/*aPropertyValue*/

    72 	)

    73 {

    74 	return KErrNotSupported;

    75 }

    76 

    77 //=============================================================================

    78 TInt CImageEditorContrastPlugin::GetProperty (

    79 	TInt		aPropertyId,

    80 	TDes &		aPropertyValue

    81 	)

    82 {

    83 	//	Clean buffer

    84 	aPropertyValue.Zero();

    85 

    86 	//	Copy data

    87 	switch (aPropertyId)

    88 	{

    89 		case KCapParamStruct:

    90 		{

    91         	aPropertyValue.Copy (KContrastTag);

    92         	aPropertyValue.AppendNum (iContrast);

    93 			return KErrNone;

    94 		}

    95 		default:

    96 		{

    97 			return CImageEditorPluginBase::GetProperty (aPropertyId, aPropertyValue);

    98 		}

    99 	}

   100 }

   101 

   102 //=============================================================================

   103 TInt CImageEditorContrastPlugin::InitPluginL (

   104 	const TRect &	aRect,

   105 	CCoeControl *	aParent,

   106 	CCoeControl *&	aPluginControl

   107 	)

   108 {

   109 	ReleasePlugin();

   110 	iControl = CSingleParamControl::NewL (aRect, aParent);

   111     ((CSingleParamControl *)iControl)->SetParObserver ( (MSingleParControlObserver*)this );

   112 	aPluginControl = iControl;

   113 

   114 	// initialize horizontal slider

   115 	((CSingleParamControl *)iControl)->SetSliderMinimumAndMaximum(KParamMin, KParamMax);

   116     ((CSingleParamControl *)iControl)->SetSliderStep(KParamStep);

   117 	((CSingleParamControl *)iControl)->SetSliderPosition(KParamDef);

   118     TFileName iconFile (KResourceDir);

   119 	TBuf<256> readbuf;  

   120 	User::LeaveIfError ( GetProperty (KCapIconName, readbuf) );

   121 	iconFile.Append(readbuf);

   122     CEikImage* icon = new (ELeave) CEikImage;

   123 	icon->CreatePictureFromFileL(iconFile,

   124 									EMbmContrastQgn_indi_imed_contrast_super,

   125 									EMbmContrastQgn_indi_imed_contrast_super_mask);

   126 	((CSingleParamControl *)iControl)->SetIcon(icon);

   127 

   128 	// Get caption from plugin properties

   129 	User::LeaveIfError ( GetProperty (KCapPluginParamNames, readbuf) );

   130 	TLex parser;

   131 	parser.Assign (readbuf);

   132     TInt tempval = 0;

   133 	parser.Val ( tempval );

   134     CDesCArray * parameters = (CDesCArray *)tempval;

   135     ((CSingleParamControl *)iControl)->SetCaption( (*parameters)[KContrastHSTitleIndex] );

   136 

   137 	return KErrNone;

   138 }

   139 

   140 //=============================================================================

   141 void CImageEditorContrastPlugin::ProcessImageL (CEditorImage * /*aImage*/ )

   142 {

   143 	// Own image processing functionality here

   144 }

   145 

   146 //=============================================================================

   147 void CImageEditorContrastPlugin::ReleasePlugin ()

   148 {

   149 		delete iControl;

   150 		iControl = 0;

   151 }

   152 

   153 //=============================================================================

   154 void CImageEditorContrastPlugin::ParamOperation (const TParamOperation aOperation)

   155 {

   156     switch (aOperation)

   157     {

   158         case EParamOperationSubtract:

   159         {

   160             iContrast -= KParamStep;

   161             if (iContrast < KParamMin)

   162             {

   163                 iContrast = KParamMin;

   164             }

   165     	    break;

   166         }

   167         case EParamOperationAdd:

   168         {

   169             iContrast += KParamStep;

   170             if ( iContrast > KParamMax )

   171             {

   172                 iContrast = KParamMax;

   173             }

   174     	    break;

   175         }

   176         case EParamOperationDefault:

   177         {

   178 	        iContrast = KParamDef;

   179     	    break;

   180         }

   181         default:

   182         {

   183     	    break;

   184         }

   185     }

   186 }

   187 

   188 //=============================================================================

   189 TReal CImageEditorContrastPlugin::GetParam () const

   190 {

   191     return (TReal)(iContrast) / (KParamMax - KParamMin);

   192 }

   193 

   194 // End of File