camerauis/activepalette/Src/ActivePalette2CheckerboardStyler.cpp
changeset 0 1ddebce53859
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/camerauis/activepalette/Src/ActivePalette2CheckerboardStyler.cpp	Thu Jan 07 16:18:56 2010 +0200
@@ -0,0 +1,337 @@
+/*
+* Copyright (c) 2007 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:  Active Palette Checkerboard Styler*
+*/
+
+
+/**
+ * @file ActivePalette2CheckerboardStyler.cpp
+ * Active Palette Checkerboard Styler
+ */
+
+#include "ActivePalette2Logger.h"
+#include "ActivePalette2CheckerboardStyler.h"
+#include "ActivePalette2Cfg.h"
+#include "ActivePalette2Utils.h"
+#include <activepalette2graphics.mbg>
+
+#include <bitstd.h>
+#include <gdi.h>
+#include <AknIconUtils.h>
+
+/// Returns whether supplied number is odd
+#define IS_ODD(num) ((num) & 1)
+
+// Lightness threshold for checking whether a pixel
+// should be considered 'white'. Lightness is defined as the sum of the
+// 8-bit red, green, and blue values.
+const TInt KLightnessThreshold = 0x80 * 3;
+
+// Threshold for determining if a pixel in a soft mask is considered
+// opaque or transparent.
+const TUint8 KMaskThreshold = 0x7f;
+
+// Color value for transparent pixel (ARGB format).
+const TUint32 KColorKey = 0xFF000000;
+
+// Color value for opaque pixel (ARGB format).
+const TUint32 KOpaqueColor = 0x00FFFFFF;
+
+
+// -----------------------------------------------------------------------------
+// CActivePalette2CheckerboardStyler::NewL()
+// -----------------------------------------------------------------------------
+//
+CActivePalette2CheckerboardStyler* CActivePalette2CheckerboardStyler::NewL()
+    {
+	CActivePalette2CheckerboardStyler* self = new (ELeave) CActivePalette2CheckerboardStyler();
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(); // this
+	return self;
+    }
+    
+// -----------------------------------------------------------------------------
+// CActivePalette2CheckerboardStyler::ConstructL()
+// -----------------------------------------------------------------------------
+//
+void CActivePalette2CheckerboardStyler::ConstructL()
+    {
+	LOGTEXT( _L( "CActivePalette2CheckerboardStyler::ConstructL entered"));
+    CActivePalette2Styler::ConstructL();
+
+	iAPTopSectionMask	    = new (ELeave) CFbsBitmap;
+	iAPItemMaskA            = new (ELeave) CFbsBitmap;
+	iAPItemMaskB            = new (ELeave) CFbsBitmap;
+	iAPGapMaskA	            = new (ELeave) CFbsBitmap;
+	iAPGapMaskB	            = new (ELeave) CFbsBitmap;
+	iAPBottomSectionMaskA   = new (ELeave) CFbsBitmap;
+	iAPBottomSectionMaskB   = new (ELeave) CFbsBitmap;
+
+    // The order of calling these has an importance, to create the checkers correctly
+
+    LoadAndScaleCheckerboardL( iAPTopSectionMask, NAP2Cfg::KUIGraphics, EMbmActivepalette2graphicsQgn_graf_cam4_tb_top, EMbmActivepalette2graphicsQgn_graf_cam4_tb_top_mask, 
+            TSize(ActivePalette2Utils::APDimension(ActivePalette2Utils::EPaletteWidth), ActivePalette2Utils::APDimension(ActivePalette2Utils::ETopSectionHeight) ) );
+    LoadAndScaleCheckerboardL( iAPItemMaskA, NAP2Cfg::KUIGraphics, EMbmActivepalette2graphicsQgn_graf_cam4_tb_body, EMbmActivepalette2graphicsQgn_graf_cam4_tb_body_mask, 
+            TSize(ActivePalette2Utils::APDimension(ActivePalette2Utils::EPaletteWidth), ActivePalette2Utils::APDimension(ActivePalette2Utils::EItemHeight) ) );
+    LoadAndScaleCheckerboardL( iAPGapMaskA, NAP2Cfg::KUIGraphics, EMbmActivepalette2graphicsQgn_graf_cam4_tb_gap, EMbmActivepalette2graphicsQgn_graf_cam4_tb_gap_mask, 
+            TSize(ActivePalette2Utils::APDimension(ActivePalette2Utils::EPaletteWidth), ActivePalette2Utils::APDimension(ActivePalette2Utils::EGapBetweenItems) ) );
+    LoadAndScaleCheckerboardL( iAPItemMaskB, NAP2Cfg::KUIGraphics, EMbmActivepalette2graphicsQgn_graf_cam4_tb_body, EMbmActivepalette2graphicsQgn_graf_cam4_tb_body_mask,
+            TSize(ActivePalette2Utils::APDimension(ActivePalette2Utils::EPaletteWidth), ActivePalette2Utils::APDimension(ActivePalette2Utils::EItemHeight) ) );
+    LoadAndScaleCheckerboardL( iAPGapMaskB, NAP2Cfg::KUIGraphics, EMbmActivepalette2graphicsQgn_graf_cam4_tb_gap, EMbmActivepalette2graphicsQgn_graf_cam4_tb_gap_mask, 
+            TSize(ActivePalette2Utils::APDimension(ActivePalette2Utils::EPaletteWidth), ActivePalette2Utils::APDimension(ActivePalette2Utils::EGapBetweenItems) ) );
+    LoadAndScaleCheckerboardL( iAPBottomSectionMaskB, NAP2Cfg::KUIGraphics, EMbmActivepalette2graphicsQgn_graf_cam4_tb_bottom, EMbmActivepalette2graphicsQgn_graf_cam4_tb_bottom_mask,
+            TSize(ActivePalette2Utils::APDimension(ActivePalette2Utils::EPaletteWidth), ActivePalette2Utils::APDimension(ActivePalette2Utils::EBottomSectionHeight) ) );
+    LoadAndScaleCheckerboardL( iAPBottomSectionMaskA, NAP2Cfg::KUIGraphics, EMbmActivepalette2graphicsQgn_graf_cam4_tb_bottom, EMbmActivepalette2graphicsQgn_graf_cam4_tb_bottom_mask,
+            TSize(ActivePalette2Utils::APDimension(ActivePalette2Utils::EPaletteWidth), ActivePalette2Utils::APDimension(ActivePalette2Utils::EBottomSectionHeight) ) );
+
+	LOGTEXT( _L( "CActivePalette2CheckerboardStyler::ConstructL Left"));
+    }
+
+// -----------------------------------------------------------------------------
+// CActivePalette2CheckerboardStyler::~CActivePalette2CheckerboardStyler()
+// -----------------------------------------------------------------------------
+//
+CActivePalette2CheckerboardStyler::~CActivePalette2CheckerboardStyler()
+    {
+	delete iAPTopSectionMask;
+	delete iAPItemMaskA;
+	delete iAPItemMaskB;
+	delete iAPGapMaskA;
+	delete iAPGapMaskB;
+	delete iAPBottomSectionMaskA;
+	delete iAPBottomSectionMaskB;
+    }
+    
+// -----------------------------------------------------------------------------
+// CActivePalette2CheckerboardStyler::DrawItem()
+// -----------------------------------------------------------------------------
+//
+void CActivePalette2CheckerboardStyler::DrawItem(TInt aScreenPos, CFbsBitmap* aIcon, CFbsBitmap* aMask, TInt aOffsetFrame, TInt aOffsetTotal)
+    {
+    TRect area(ItemRect(aScreenPos, aOffsetFrame, aOffsetTotal));
+    
+    iDrawBufContext->SetClippingRect(iItemsRect);
+    iDrawBufMaskContext->SetClippingRect(iItemsRect);
+
+    if ( IS_ODD(aScreenPos) )
+        {  
+        BlitGraphic(area.iTl, iDrawBufContext, iDrawBufMaskContext, iAPItem, iAPItemMaskB, EFalse, EFalse);
+        }
+    else
+        {
+        BlitGraphic(area.iTl, iDrawBufContext, iDrawBufMaskContext, iAPItem, iAPItemMaskA, EFalse, EFalse);
+        }
+        
+	BlitGraphic(area.iTl + TPoint(ActivePalette2Utils::APDimension(ActivePalette2Utils::EItemXOffset),0), iDrawBufContext, iDrawBufMaskContext, aIcon, aMask, ETrue, ETrue);
+
+    iDrawBufMaskContext->CancelClippingRect();
+    iDrawBufContext->CancelClippingRect();
+
+    area.Intersection(iItemsRect);
+    AddToDirtyRect(	area );
+    }
+
+// -----------------------------------------------------------------------------
+// CActivePalette2CheckerboardStyler::DrawGap()
+// -----------------------------------------------------------------------------
+//
+void CActivePalette2CheckerboardStyler::DrawGap(TInt aScreenPos, TInt aOffsetFrame, TInt aOffsetTotal)
+    {
+    TRect area(GapRect(aScreenPos, aOffsetFrame, aOffsetTotal));
+    
+    iDrawBufContext->SetClippingRect(iItemsRect);
+    iDrawBufMaskContext->SetClippingRect(iItemsRect);
+
+    if ( IS_ODD(aScreenPos) )
+        {  
+        BlitGraphic(area.iTl, iDrawBufContext, iDrawBufMaskContext, iAPGap, iAPGapMaskB, EFalse, EFalse);
+        }
+    else
+        {  
+        BlitGraphic(area.iTl, iDrawBufContext, iDrawBufMaskContext, iAPGap, iAPGapMaskA, EFalse, EFalse);
+        }
+
+    iDrawBufMaskContext->CancelClippingRect();
+    iDrawBufContext->CancelClippingRect();
+
+    area.Intersection(iItemsRect);
+    AddToDirtyRect(	area );
+    }
+
+// -----------------------------------------------------------------------------
+// CActivePalette2CheckerboardStyler::AnimItem()
+// -----------------------------------------------------------------------------
+//
+void CActivePalette2CheckerboardStyler::AnimItem(TInt aScreenPos, CFbsBitmap* aIcon, CFbsBitmap* aMask)
+    {
+    TRect area(ItemRect(aScreenPos));
+    area.iTl.iX = ActivePalette2Utils::APDimension(ActivePalette2Utils::EItemXOffset);
+    area.SetWidth(ActivePalette2Utils::APDimension( ActivePalette2Utils::EItemWidth ));
+
+    TRect clippingRect(TPoint(ActivePalette2Utils::APDimension(ActivePalette2Utils::EItemXOffset), 0), ActivePalette2Utils::APDimensionSize( ActivePalette2Utils::EItemSize ) );
+    
+    iDrawBufContext->BitBlt(area.iTl, iAPItem, clippingRect);
+    
+    if ( IS_ODD(aScreenPos) )
+        {  
+        iDrawBufMaskContext->BitBlt(area.iTl, iAPItemMaskB, clippingRect);
+        }
+    else
+        {
+        iDrawBufMaskContext->BitBlt(area.iTl, iAPItemMaskA, clippingRect);
+        }
+        
+	BlitGraphic(area.iTl, iDrawBufContext, iDrawBufMaskContext, aIcon, aMask, ETrue, ETrue);
+
+    AddToDirtyRect(	area );
+    }
+
+// -----------------------------------------------------------------------------
+// CActivePalette2CheckerboardStyler::DrawTopScrollArrowSection()
+// -----------------------------------------------------------------------------
+//
+void CActivePalette2CheckerboardStyler::DrawTopScrollArrowSection(TBool aShowArrow)
+    {
+    TRect area(TopSectionRect());
+    
+    BlitGraphic(TPoint(0,0), iDrawBufContext, iDrawBufMaskContext, iAPTopSection, iAPTopSectionMask, EFalse, EFalse);
+
+    if ( aShowArrow )
+        {
+        CentreGraphic(area, iDrawBufContext, iDrawBufMaskContext, iScrollUpIcon, iScrollUpIconMask, ETrue, ETrue);
+        }
+
+    AddToDirtyRect(	area );
+    }
+
+// -----------------------------------------------------------------------------
+// CActivePalette2CheckerboardStyler::DrawBottomScrollArrowSection()
+// -----------------------------------------------------------------------------
+//
+void CActivePalette2CheckerboardStyler::DrawBottomScrollArrowSection(TBool aShowArrow)
+    {
+    TRect area(BottomSectionRect());
+    
+    if ( IS_ODD(iNumItems) )
+        {  
+        BlitGraphic(area.iTl, iDrawBufContext, iDrawBufMaskContext, iAPBottomSection, iAPBottomSectionMaskA, EFalse, EFalse);
+        }
+    else
+        {
+        BlitGraphic(area.iTl, iDrawBufContext, iDrawBufMaskContext, iAPBottomSection, iAPBottomSectionMaskB, EFalse, EFalse);
+        }
+        
+    if ( aShowArrow )
+        {
+        CentreGraphic(area, iDrawBufContext, iDrawBufMaskContext, iScrollDownIcon, iScrollDownIconMask, ETrue, ETrue);
+        }
+
+    AddToDirtyRect(	area );
+    }
+    
+
+// -----------------------------------------------------------------------------
+// CActivePalette2CheckerboardStyler::LoadAndScaleCheckerboard()
+// -----------------------------------------------------------------------------
+//
+void CActivePalette2CheckerboardStyler::LoadAndScaleCheckerboardL(
+                                                CFbsBitmap* aTargetBitmap,
+                                                const TDesC& aFileName,
+                                                TInt32 aId,
+                                                TInt32 aMaskId,
+                                                TSize aSize )
+    {
+    LOGTEXT( _L( "CActivePalette2CheckerboardStyler::LoadAndScaleCheckerboard entered"));
+    CFbsBitmap* sourceIcon = NULL;
+    CFbsBitmap* sourceIconMask = NULL;
+    AknIconUtils::CreateIconLC(sourceIcon, sourceIconMask, aFileName, aId, aMaskId);
+    AknIconUtils::SetSize(sourceIcon, aSize);
+    AknIconUtils::SetSize(sourceIconMask, aSize);
+    LOGTEXT( _L( "CActivePalette2CheckerboardStyler::LoadAndScaleCheckerboard svg icons loaded"));
+    User::LeaveIfError( aTargetBitmap->Create( aSize, EColor16MA ) );
+
+    TSize bmpSize = aTargetBitmap->SizeInPixels();
+    TRgb rgbColor = KRgbBlack;
+    TRgb rgbAlphaColor = KRgbBlack;
+
+    HBufC8* lineBuf = HBufC8::NewLC( CFbsBitmap::ScanLineLength( bmpSize.iWidth, EColor16MA ) );
+    TPtr8 lineDes = lineBuf->Des();
+    HBufC8* maskBuf = HBufC8::NewLC( CFbsBitmap::ScanLineLength( bmpSize.iWidth, EGray256 ) );
+    TPtr8 maskDes = maskBuf->Des();
+
+    for (TInt y = 0; y < bmpSize.iHeight; y++)
+        {
+        sourceIcon->GetScanLine(
+                lineDes, TPoint(0, y), bmpSize.iWidth, EColor16MA);
+        sourceIconMask->GetScanLine(
+                maskDes, TPoint(0, y), bmpSize.iWidth, EGray256);
+
+        // EColor16MA is 4 bytes (32-bits) per pixel
+        TUint32* linePtr = reinterpret_cast<TUint32*>( &lineDes[0] );
+
+        // EGray256 is 1 byte per pixel
+        TUint8* maskPtr = reinterpret_cast<TUint8*>( &maskDes[0] );
+
+        for( TInt x = 0; x < bmpSize.iWidth; x++ )
+            {
+            TUint32 color = linePtr[x];
+            TUint8 mask = maskPtr[x];
+
+            // Get the RGB values in order to check the lightness of the pixel
+            // to determine whether to mask with the checkerboard pattern.
+            TInt lightness =
+                (color & 0xFF) +         // blue
+                ((color >> 8) & 0xFF) +  // green
+                ((color >> 16) & 0xFF);  // red
+
+            if ( mask < KMaskThreshold )
+                {
+                // Transparent area.
+                linePtr[x] = KColorKey;
+                }
+            else if ( lightness > KLightnessThreshold )
+                {
+                // Semitransparent (dithered) area.
+                // Make every second pixel transparent.
+                if ( ( x + iLineCheckerCounter ) & 1 )
+                    {
+                    linePtr[x] = KColorKey;
+                    }
+                else
+                    {
+                    linePtr[x] = KOpaqueColor;
+                    }
+                }
+            else
+                {
+                // Fully opaque area
+                linePtr[x] = KOpaqueColor;
+                }
+            }
+
+        aTargetBitmap->SetScanLine(lineDes, y);
+        iLineCheckerCounter++;
+        }
+
+    // end draw checkers
+    LOGTEXT( _L( "CActivePalette2CheckerboardStyler::LoadAndScaleCheckerboard svg4"));
+
+    CleanupStack::PopAndDestroy(maskBuf);
+    CleanupStack::PopAndDestroy(lineBuf);
+    CleanupStack::PopAndDestroy(2); // sourceIcon, sourceIconMask
+    LOGTEXT( _L( "CActivePalette2CheckerboardStyler::LoadAndScaleCheckerboard left"));
+    }
+
+