graphicsdeviceinterface/colourpalette/inc/palette.h
author William Roberts <williamr@symbian.org>
Thu, 03 Jun 2010 17:39:46 +0100
branchNewGraphicsArchitecture
changeset 87 0709f76d91e5
parent 0 5d03bc08d59c
permissions -rw-r--r--
Add MMP files to build libOpenVG_sw.lib which uses LINKAS to redirect to libOpenVG.dll (and the same for libEGL_sw.lib and libOpenVGU_sw.lib). Only the libEGL_sw.lib redirection isn't activated - this can't happen until there is a merged libEGL.dll which supports the OpenWF synchronisation and also implements the graphical support functions. The overall aim is to eliminate the *_sw.dll implementations, at least as a compile-time way of choosing a software-only implementation.The correct way to choose is to put the right set of libraries into a ROM with suitable renaming, and in the emulator to use the "switching DLL" technique to pick the right set. As the Symbian Foundation doesn't have any alternative implementations, we don't need the switching DLLs and we can build directly to the correct name.

// Copyright (c) 2002-2009 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:
//

#ifndef __PALETTE_H__
#define __PALETTE_H__

#include <e32base.h>

class TColor256Util;


class DynamicPalette
/** Hooks to allow dynamic palette switching in 256 colour mode.

TRgb::Color256() transparently invokes hooks in this class. The behaviour 
of the system can be customized by replacing the implementation in palette.dll 
with device-specific functionality to switch the colour palette at run-time. 
@publishedAll
@released
*/
	{
public:
	/** Stores the index values of the palettes defined. This enum may be as 
	short or as long as desired - there is no requirement that the size of the 
	enum in any given implementation be limited to the five sample values given 
	in this example implementation. */
	enum TIndex
		{
		/** A palette index number. */
		EIndex0,
		/** A palette index number. */
		EIndex1,
		/** A palette index number. */
		EIndex2,
		/** A palette index number. */
		EIndex4,
		/** A palette index number. */
		EIndex5,
	};

	IMPORT_C static const TColor256Util* DefaultColor256Util();
	IMPORT_C static void SetColor256Util(TIndex aIndex);

	IMPORT_C static const TUint32* Color16array();
	IMPORT_C static const TUint8* Color16inverse();
	};

#endif