/*

* Copyright (c) 2010 Kanrikogaku Kenkyusho, Ltd.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:

* Kanrikogaku Kenkyusho, Ltd. - Initial contribution

*

* Contributors:

*

* Description:

* {Description of the file}

*

*/

// Protection against nested includes

#ifndef __DIRECTPRINTPREVIEWCONTROL_H__

#define __DIRECTPRINTPREVIEWCONTROL_H__

// System includes

#include <eikbctrl.h>

#include <prnprev.h>

// Forward declarations

class CPrintSetup;

class TPrintPreviewFormat;

class MPageRegionPrinter;

class MPrintProcessObserver;

// Class declaration

/**

 *  Preview control class

 *  more_complete_description

 */

class CDirectPrintPreviewControl : public CEikBorderedControl

								 , public MCoeControlObserver

	{

public:

	// Data types

	/** The index of zoom level */

	enum TPreviewZoomLevel

		{

		EPreviewZoomLevel1, // display into view area

		EPreviewZoomLevel2,

		EPreviewZoomLevel3,

		EPreviewZoomLevel4,

		EPreviewZoomLevel5,

		EPreviewZoomLevelMax

		};

public:

	/** Constructors */

	static CDirectPrintPreviewControl* NewL(const CCoeControl* aParent);

	static CDirectPrintPreviewControl* NewLC(const CCoeControl* aParent);

	/** Destructor */

	virtual ~CDirectPrintPreviewControl();

public:

	/**

	 * Set observer.

	 *

	 * @param aObserver Pointer to observer.

	 */

	void SetPreviewImageObserver(MPrintProcessObserver* aObserver);

	/**

	 * Initialize display format.

	 *

	 * @param aPrintSetup Setup information.

	 * @param aBodyPrinter Body printer.

	 * @param aFormat Display format information.

	 * @param aNumPagesInDoc Number of all pages.

	 * @param aFirstPageToDisplay Page number of first display.

	 * @param aNumPagesToView Number of pages to view.

	 * @param aMarginState Margin information.

	 */

	void InitializeFormat(	CPrintSetup& aPrintSetup,

							MPageRegionPrinter& aBodyPrinter,

							TPrintPreviewFormat& aFormat,

							TInt& aNumPagesInDoc,

							TInt& aFirstPageToDisplay,

							TInt aNumPagesToView,

							CPrintPreviewImage::TMarginState& aMarginState);

	/**

	 * Set display format.

	 *

	 * @param aFirstPageToDisplay Page number of first display.

	 * @param aNumPagesToView Count of pages to view.

	 */

	void SetFormatAndDrawL(TInt& aFirstPageToDisplay,TInt& aNumPagesToView);

	/**

	 * Set margin.

	 *

	 * @param aMarginState Margin information.

	 */

	void SetMarginAndDrawL(CPrintPreviewImage::TMarginState aMarginState);

	/**

	 * Set number of bands.

	 *

	 * @param aNumBands Number of bands.

	 */

	void SetNumBands(TInt aNumBands);

	/**

	 * Set page number.

	 *

	 * @param aNumPagesInDoc Number of all pages.

	 * @param aFirstPageToDisplay Page number of first display.

	 * @param aNumPagesToView Number of pages to view.

	 */

	void SetNumPagesInDoc(TInt aNumPagesInDoc,TInt aFirstPageToDisplay,TInt aNumPagesToView);

public: // from CCoeControl

	/**

	 * From CCoeControl.

	 * Activate.

	 */

	void ActivateL();

	/**

	 * From CCoeControl.

	 * Draw display.

	 *

	 * @param aRect Rect to draw.

	 */

	void Draw(const TRect& aRect) const;

	/**

	 * From CCoeControl.

	 * Handles key events.

	 *

	 * @param aKeyEvent The code of key event.

	 * @param aType The code of event.

	 * @return The code of key response.

	 */

	TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType);

	/**

	 * From CCoeControl.

	 * Constructor.

	 *

	 * @param aReader ResourceReader.

	 */

//	void ConstructFromResourceL(TResourceReader& aReader);

	/**

	 * Set flag.

	 *

	 * @param aDraw Draw flag.

	 */

	void SetDrawFlag(TBool aDraw);

	/**

	 * Get flag.

	 *

	 * @return Draw flag.

	 */

	TBool DrawFlag();

	/**

	 * From CCoeControl.

	 * Get input capabilities.

	 *

	 * @return Input capabilities.

	 */

	TCoeInputCapabilities InputCapabilities() const;

	// for zoom

	/**

	 * Set zoom level.

	 *

	 * @param aZoomLevel Zoom level.

	 */

	void SetZoomLevel(TInt aZoomLevel);

	/**

	 * Get zoom level.

	 *

	 * @return Zoom level.

	 */

	TInt GetZoomLebel();

	/**

	 * Increment zoom level.

	 */

	void IncrementZoomLevel();

	/**

	 * Decrement zoom level.

	 */

	void DecrementZoomLevel();

protected: // from CCoeControl

	void SizeChanged();

	TInt CountComponentControls() const;

	CCoeControl* ComponentControl(TInt aIndex) const;

	void WriteInternalStateL(RWriteStream& aWriteStream) const;

	/**

	 * From CoeControl, HandlePointerEventL.

	 * Called by framework when a pointer touch event occurs.

	 * Note: although this method is compatible with earlier SDKs,

	 * it will not be called in SDKs without Touch support.

	 * @param aPointerEvent the information about this event

	 */

	virtual void HandlePointerEventL(const TPointerEvent& aPointerEvent);

private: // from CCoeControl

//	void SetContainerWindowL(const CCoeControl& aParent);

private: // from MCoeControlObserver

	void HandleControlEventL(CCoeControl* aControl,TCoeEvent aEvent);

private:

	CDirectPrintPreviewControl();

	void ConstructL(const CCoeControl* aParent);

private:

	void CreateScrollButtonsL();

	void DrawPreview(const TRect& aRect);

	void SwitchFirstPageToDisplayL(TInt& aNewFirstPageToDisplay);

	void DrawButtons() const;

	void SetZoomLevelAndDispalyRect(TInt aZoomLevel);

	void CreatePreviewImageL();

private:

	/** Pointer to button controls. */

//	CEikScrollButton* iButton[2];

	/** Pointer to image. */

	CPrintPreviewImage* iPreview;

	/** Pointer to setup information. */

	CPrintSetup* iPrintSetup;

	/** Pointer to body printer. */

	MPageRegionPrinter* iBodyPrinter;

	/** Pointer to format information. */

	TPrintPreviewFormat* iPrintPreviewFormat;

	/** Pointer to page number. */

	TInt* iFirstPageToDisplay;

	/** Number of all pages. */

	TInt iNumPagesInDoc;

	/** Number of pages to view. */

	TInt iNumPagesToView;

	/** Number of bands. */

	TInt iNumBands;

	/** Margin information. */

	CPrintPreviewImage::TMarginState iMarginState;

	/** Display rect. */

	TRect iDisplayRect;

	/** Draw flag. */

	TBool iPreviewDraw;

	/** Display point. */

	TPoint iDisplayPoint;

	/** Position of pointer. */

	TPoint iPointerDownPos;

	/** Zoom level. */

	TInt  iZoomLevel;			// set TPreviewZoomLevel

	};

#endif // __DIRECTPRINTPREVIEWCONTROL_H__