author | Simon Howkins <simonh@symbian.org> |
Mon, 15 Nov 2010 14:53:34 +0000 | |
branch | RCL_3 |
changeset 105 | 871af676edac |
parent 0 | dd21522fd290 |
child 49 | 4c02a47fcdfc |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003 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 the License "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: Object for containing scrolling specific methods. |
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* |
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*/ |
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#ifndef __MVCSCROLL_H |
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#define __MVCSCROLL_H |
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// INCLUDES |
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#include <e32base.h> |
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#include "MVCView.h" |
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#include "nw_evt_controlkeyevent.h" |
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// CONSTANTS |
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|
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// MACROS |
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// DATA TYPES |
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// FUNCTION PROTOTYPES |
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// FORWARD DECLARATIONS |
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|
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// CLASS DECLARATION |
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NONSHARABLE_CLASS(CMVCScroll) : public CBase |
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{ |
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public: |
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/** |
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* Two-phased constructor. |
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* @param view A pointer to the view object associated with this scroll object |
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* @return CMVCScroll* |
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*/ |
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static CMVCScroll* NewL(CView* view); |
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/** |
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* Destructor. |
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*/ |
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~CMVCScroll(); |
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/** |
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* Navigates downward through the page |
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* @since 2.X |
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* @param isNewPage A flag passed to SetCurrentBox |
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* @param noBoxVisible A flag used for deciding whether or not to call ForceCurrentBox |
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* @return TBool |
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*/ |
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TBool TabForward(TBool isNewPage, |
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TBool* noBoxVisible); |
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/** |
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* Navigates upward through the page |
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* @since 2.X |
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* @param noBoxVisible A flag used for deciding whether or not to call ForceCurrentBox |
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* @return TBool |
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*/ |
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TBool TabBackward(TBool* noBoxVisible); |
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/** |
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* Navigates left horizontally through the page |
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* @since 2.X |
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* @param noBoxVisible A flag used for deciding whether or not to call ForceCurrentBox |
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* @return TBool |
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*/ |
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TBool TabLeft(TBool* noBoxVisible); |
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/** |
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* Navigates right horizontally through the page |
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* @since 2.X |
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* @param noBoxVisible A flag used for deciding whether or not to call ForceCurrentBox |
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* @return TBool |
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*/ |
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TBool TabRight(TBool* noBoxVisible); |
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/** |
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* Returns a NW_LMgr_Box_t pointer to the the previous box in the index |
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* @since 2.X |
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* @param oldBox A pointer to the (current)box used to calculate the previous box |
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* @return NW_LMgr_Box_t* |
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*/ |
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NW_LMgr_Box_t* GetPreviousTabIndex(const NW_LMgr_Box_t* oldBox, |
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NW_Int32* currentTabIndex); |
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/** |
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* Returns a NW_LMgr_Box_t pointer to the the next box in the index |
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* @since 2.X |
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* @param oldBox A pointer to the (current)box used to calculate the previous box |
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* @return NW_LMgr_Box_t* |
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*/ |
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NW_LMgr_Box_t* GetNextTabIndex(const NW_LMgr_Box_t* oldBox, |
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NW_Int32* currentTabIndex); |
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/** |
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* Processes the control key for normal layout |
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* @since 2.X |
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* @param key The control key that was pressed, up, down, left, right |
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* @return TBool |
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*/ |
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TBool ProcessControlKey(NW_Evt_ControlKeyType_t key); |
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|
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/** |
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* Processes the control key for vertical layout |
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* @since 2.X |
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* @param key The control key that was pressed, up, down, left, right |
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* @return TBool |
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*/ |
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TBool ProcessControlKeyVL(NW_Evt_ControlKeyType_t key); |
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|
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/** |
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* Method used to calculate the amount to scroll the page up or down |
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* @since 2.X |
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* @param void |
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* @return NW_Uint16 |
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*/ |
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NW_Uint16 GetScrollAmount(void); |
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|
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/** |
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* Method used in vertical layout to page up or down by one full |
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* page size minus 2 lines |
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*/ |
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TBool ScrollPage(NW_Evt_ControlKeyType_t key); |
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|
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/** |
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* Method returns the first sibling box whose width and height are not zero |
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*/ |
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NW_LMgr_Box_t* CMVCScroll::GetFirstSiblingBox (NW_LMgr_Box_t* box); |
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private: // Private methods and member variables |
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/** |
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* C++ default constructor. |
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*/ |
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CMVCScroll(CView* view); |
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|
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/** |
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* By default Symbian 2nd phase constructor is private. |
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*/ |
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void ConstructL(); |
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|
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/** |
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* Method used in vertical layout to tab to the appropriate link |
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*/ |
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TBool ScrollLink(NW_Evt_ControlKeyType_t key, |
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TBool* noBoxVisible); |
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|
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/** |
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* Method used to calculate the next box to tab to |
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*/ |
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void GetBoxRange(NW_LMgr_Box_t* box, |
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NW_GDI_Metric_t* referenceY, NW_GDI_Metric_t* refY2, |
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NW_GDI_Metric_t* referenceX, NW_GDI_Metric_t* refX2); |
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|
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/** |
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* Method to set focus to the current box |
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*/ |
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TBrowserStatusCode SetCurrentBox(NW_LMgr_Box_t* box, |
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NW_Evt_TabEvent_t* tabEvent, |
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TBool isNewPage, |
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TBool* noBoxVisible); |
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/** |
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* Method returns true if the box is visible in both rectangles |
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*/ |
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TBool IsBoxVisibleInEither(const NW_LMgr_Box_t* box, |
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NW_GDI_Rectangle_t* bounds1, |
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NW_GDI_Rectangle_t* bounds2); |
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/** |
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* Method used to get range of the box, not considering sibling or master box's range |
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*/ |
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void GetBoxRangeRestrict (NW_LMgr_Box_t* box, |
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NW_GDI_Metric_t* referenceY, NW_GDI_Metric_t* refY2, |
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NW_GDI_Metric_t* referenceX, NW_GDI_Metric_t* refX2 ); |
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/** |
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* Method used to get master range of the box |
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*/ |
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void GetMasterBoxRange (NW_LMgr_Box_t* box, |
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NW_GDI_Metric_t* referenceY, NW_GDI_Metric_t* refY2, |
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NW_GDI_Metric_t* referenceX, NW_GDI_Metric_t* refX2 ); |
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|
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/** |
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* Method used to get the first sibling box range |
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*/ |
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void GetFirstSiblingBoxRange (NW_LMgr_Box_t* box, |
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NW_GDI_Metric_t* referenceY, NW_GDI_Metric_t* refY2, |
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NW_GDI_Metric_t* referenceX, NW_GDI_Metric_t* refX2 ); |
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/** |
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* Method used to get the size of the visible box |
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*/ |
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NW_Bool HowBigIsBoxVisible ( const NW_LMgr_Box_t* box, |
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NW_GDI_Rectangle_t* bounds, |
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NW_GDI_Rectangle_t* overlap ); |
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/** |
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* Method used to get the scroll down bounds |
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*/ |
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NW_Bool GetScrollDownBounds ( CView* view, |
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NW_GDI_Rectangle_t* scrolledBounds ); |
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/** |
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* Method used to get the scroll up bounds |
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*/ |
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NW_Bool GetScrollUpBounds ( CView* view, |
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NW_GDI_Rectangle_t* scrolledBounds ); |
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/** |
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* Method used to get the tab index |
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*/ |
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NW_LMgr_Box_t* GetTabIndex( const NW_LMgr_Box_t* oldBox, |
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NW_Bool nextIndex, |
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NW_Int32* currentTabIndex ); |
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/** |
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* Method used to get the next event listener |
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*/ |
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NW_LMgr_Box_t* GetNextEventListener (NW_LMgr_BoxVisitor_t* boxVisitor); |
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/** |
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* Method used to find the first visible box on a page |
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*/ |
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void GetFirstVisible(NW_LMgr_Box_t* box, |
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NW_LMgr_Box_t** firstVisible); |
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/** |
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* Method used to calculate the amount to page up or down |
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*/ |
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NW_Uint16 GetPagingAmount(void); |
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// Pointer to the scroll objects associated view object |
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CView* iView; |
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}; |
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#endif //__MVCSCROLL_H |