author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:00:49 +0200 | |
changeset 0 | 2f259fa3e83a |
child 3 | 8ca85d2f0db7 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997-1999 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Indicator for double span scroll bar. |
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* |
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*/ |
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|
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#ifndef __AKNDOUBLESPANSCROLLINDICATOR_H |
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#define __AKNDOUBLESPANSCROLLINDICATOR_H |
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#include <coecntrl.h> |
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#include "eikscrlb.h" |
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#include "AknDoubleSpanScrollIndicatorItem.h" |
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class CAknDoubleSpanScrollIndicatorBGExtension; |
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NONSHARABLE_CLASS( TBitmapFx ) |
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{ |
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public: |
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struct TRGB |
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{ |
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TInt iR; |
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TInt iG; |
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TInt iB; |
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}; |
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struct THSL |
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{ |
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TInt iH; |
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TInt iS; |
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TInt iL; |
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}; |
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static void PixelEffect( TUint16* aPixelData ); |
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static TInt HueToRGB( TInt v1, TInt v2, TInt aH ); |
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}; |
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NONSHARABLE_CLASS(CAknDoubleSpanScrollIndicator) : public CCoeControl |
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{ |
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public: // public construction and destruction methods |
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/** |
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* Two-phased constructor. |
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* |
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* @since 2.6 |
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* @return Newly constructed object. |
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*/ |
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static CAknDoubleSpanScrollIndicator* NewL(CEikScrollBar::TOrientation aOrientation); |
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/** |
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* Destructor. |
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* |
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* @since 2.6 |
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*/ |
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~CAknDoubleSpanScrollIndicator(); |
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public: // new methods |
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/** |
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* Sets values for the indicator. |
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* |
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* @since 2.6 |
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* @param aScrollSpan Size of the scrolled list. |
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* @param aFocusPosition Position of the current field in the list. |
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* @param aWindowSize Size of the visible part of the list. |
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* @param aFieldPosition Size of the current field. (Optional double span) |
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* @param aFieldSize Position inside the current field. (Optional double span) |
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* |
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*/ |
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void SetIndicatorValues(TInt aScrollSpan, TInt aFocusPosition, TInt aWindowSize, TInt aFieldPosition, TInt aFieldSize); |
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/** |
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* Gets a value from the indicator. |
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* |
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* @since 2.6 |
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* @return Size of the scrolled list. |
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* |
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*/ |
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TInt ScrollSpan(); |
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/** |
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* Gets a value from the indicator. |
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* |
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* @since 2.6 |
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* @return Position of the current field in the list. |
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* |
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*/ |
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TInt FocusPosition(); |
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/** |
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* Gets a value from the indicator. |
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* |
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* @since 2.6 |
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* @return Size of the visible part of the list. |
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* |
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*/ |
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TInt WindowSize(); |
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/** |
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* Gets a value from the indicator. |
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* |
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* @since 2.6 |
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* @return Size of the current field. (Optional double span) |
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* |
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*/ |
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TInt FieldPosition(); |
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|
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/** |
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* Gets a value from the indicator. |
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* |
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* @since 2.6 |
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* @return Position inside the current field. (Optional double span) |
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* |
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*/ |
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TInt FieldSize(); |
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|
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/** |
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* Sets flag which tells wheter indicator should assume transparent background |
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* instead of drawing a background from skin system. |
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* |
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* @since 2.6 |
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* @param aTransparentBackground If ETrue, then indicator does not try to |
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* draw background. Otherwise background is |
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* drawn normally. |
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*/ |
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void SetTransparentBackground(TBool aTransparentBackground); |
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|
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/** |
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* Gets flag which tells wheter indicator should assume transparent background |
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* instead of drawing a background from skin system. |
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* |
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* @since 2.6 |
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* @retrun If ETrue, then indicator does not try to |
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* draw background. Otherwise background is drawn normally. |
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*/ |
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TBool TransparentBackground(); |
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|
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/** |
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* Gets the width of the indicator graphics. |
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* |
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* @since 2.8 |
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* @return Width of the indicator. |
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* |
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*/ |
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TInt IndicatorWidth(); |
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|
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/** |
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* @since 3.1 |
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* TInt aOwnsWindow is zero if non-window, else window owning |
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*/ |
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void SetAsWindowOwning(TBool aOwnsWindow); |
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|
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private: // methods from CCoeControl |
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void Draw(const TRect& aRect) const; |
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void SizeChanged(); |
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public: |
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void HandleResourceChange(TInt aType); |
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|
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/** |
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* Is the scrollbar drawing its background from background context |
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* or are the scrollbar graphics drawn on top of current graphics on display |
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* |
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* @since 3.0 |
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* @return The background drawing state |
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* |
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*/ |
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TBool DrawBackgroundState(); |
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|
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/** |
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* Set the background drawing of the scrollbar. If ETrue, scrollbar draws |
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* background from background context. |
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* |
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* @since 3.0 |
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* @param aDraw If ETrue, background is drawn, otherwise drawing is skipped |
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*/ |
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void SetDrawBackgroundState(TBool aDraw); |
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|
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/** |
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* Get the current calculated thumb (handle) span in pixels. |
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* |
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* @since 5.0 |
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* @return The thumb span in pixels |
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*/ |
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TInt GetCurrentThumbSpanInPixels(); |
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|
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/** |
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* Get the current calculated thumb (handle) position in pixels |
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* relative to the iTl of the scrollbar's shaft. |
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* |
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* @since 5.0 |
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* @return The thumb position in pixels |
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*/ |
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TInt GetCurrentThumbPositionInPixels(); |
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|
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/** |
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* Sets the handle drag highlight. |
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* |
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* @since 5.0 |
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* @param aHandleHighlight If ETrue, turn the handle highlight on. |
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*/ |
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void SetHandleHighlight( TBool aHandleHighlight ); |
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|
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/** |
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* Gets the status of the handle drag highlight. |
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* |
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* @since 5.0 |
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* @return ETrue, if the handle highlight is on. |
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*/ |
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TBool HandleHighlight() const; |
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/** |
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* Sets the touch area control. |
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* |
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* @since 5.0 |
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* @param aTouchAreaControl A pointer to the control which is drawn |
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* along with this indicator. |
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*/ |
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void SetTouchAreaControl( CCoeControl* aTouchAreaControl ); |
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/** |
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* Sets the background drag highlight. |
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* |
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* @since 5.0 |
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* @param aHandleHighlight If ETrue, turn the handle highlight on. |
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*/ |
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void SetBackgroudHighlight( TBool aBackgroudHighlight ); |
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/** |
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* Gets the status of the background drag highlight. |
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* |
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* @since 5.0 |
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* @return ETrue, if the handle highlight is on. |
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*/ |
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TBool BackgroudHighlight() const; |
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private: // new methods |
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/** |
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* C++ default constructor. |
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* |
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* @since 2.6 |
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*/ |
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CAknDoubleSpanScrollIndicator(); |
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/** |
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* By default Symbian 2nd phase constructor is private. |
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* |
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* @since 2.6 |
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*/ |
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void ConstructL(CEikScrollBar::TOrientation aOrientation); |
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/** |
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* Checks and if needed modifies values for drawing. |
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* |
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* @since 2.6 |
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* @param aScrollSpan Size of the scrolled list. |
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* @param aFocusPosition Position of the current field in the list. |
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* @param aWindowSize Size of the visible part of the list. |
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* @param aFieldPosition Size of the current field. (Optional double span) |
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* @param aFieldSize Position inside the current field. (Optional double span) |
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* |
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*/ |
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void CheckValues(TInt& aScrollSpan, TInt& aFocusPosition, TInt& aWindowSize, TInt& aFieldPosition, TInt& aFieldSize) const; |
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/** |
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* Calculates rects for different indicator parts to be used in drawing phase. |
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* |
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* @since 2.6 |
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*/ |
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void CalculateRects(); |
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/** |
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* Creates items (that contain the bitmaps) for the scrollbar. |
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* |
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* @since 2.6 |
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*/ |
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void CreateScrollBarItemsL(); |
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TInt ScrollHandleMaxVisibleSizeInPixels(); |
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TInt HandleBackgroundMinSizeInPixels(); |
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TInt HandleMinSizeInPixels(); |
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/** |
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* Handles background drawing |
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* |
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* @since 3.1 |
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* |
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*/ |
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void DrawBackground() const; |
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/** |
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* Handles background bitmap creation for window owning scrollbar |
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* |
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* @since 3.1 |
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* |
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*/ |
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void CreateBackgroundBitmapL(); |
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/** |
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* Layout scrollbar handle |
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* |
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* @since 3.1 |
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* |
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*/ |
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void LayoutHandleGraphics(); |
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|
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/** |
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* Used for highlighting handle skin graphics. Takes a bitmap, creates |
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* a copy and optionally applies an effect for the pixels in the |
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* bitmap. Returns the new bitmap, so caller must take ownership. |
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* Note that the effect only works for EColor64K bitmaps. |
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* |
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* @since 5.0 |
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* @param aSource The source bitmap. |
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* @param aCopyOnly If ETrue, doesn't apply effect. |
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* @return The new bitmap. |
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*/ |
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CFbsBitmap* CopyAndApplyEffectL( const CFbsBitmap* aSource, TBool aCopyOnly = EFalse ); |
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CAknDoubleSpanScrollIndicatorItem* LoadScrollIndicatorItemL( |
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const TAknsItemID &aTopId, |
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const TAknsItemID &aMidId, |
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const TAknsItemID &aBottomId); |
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void DrawTiled( |
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CWindowGc& aGc, const TRect& aRect, |
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CAknDoubleSpanScrollIndicatorItem *aIndicatorItem) const; |
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void UpdateScrollBarLayout(); |
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private: // data |
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TInt iScrollSpan; // Size of the scrolled list. |
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TInt iFocusPosition; // Position of the current field in the list. |
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TInt iWindowSize; // Size of the visible part of the list. |
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TInt iFieldPosition; // Size of the current field. (Optional double span) |
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TInt iFieldSize; // Position inside the current field. (Optional double span) |
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TBool iOwnsWindow; // Is window owning |
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TInt iSpare; |
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TRect iBackgroundRect; // Rect for scrollbar background. |
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TRect iHandleBackgroundRect; // Rect for scrollbar handle background. |
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TRect iHandleRect; // Rect for scrollbar handle. |
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TBool iTransparentBackground; // A flag which tells if we have transparent bg |
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TBool iDrawBackground; // do we draw any background |
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TBool iHandleHighlight; // is handle drag highlight on? |
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TBool iBackgroundHighlight; //is background highlight on? |
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mutable TBool iDrawBackgroundBitmap; // do we draw the background to the background bitmap before it is drawn |
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TRect iOldRect; // the old scb retangle, to optimize unneccessary resizing |
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CEikScrollBar::TOrientation iOrientation; // Vertical or horizontal scrollbar |
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CAknDoubleSpanScrollIndicatorItem* iBackgroundBar; |
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CAknDoubleSpanScrollIndicatorItem* iHighlightBackgroundBar; |
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CAknDoubleSpanScrollIndicatorItem* iHandleBar; |
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CAknDoubleSpanScrollIndicatorItem* iHighlightHandleBar; |
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TInt iHeadItemSize; |
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TInt iMidItemSize; |
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TInt iTailItemSize; |
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CCoeControl* iTouchAreaControl; // Not own. |
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}; |
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#endif |
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381 |