132 lines
4.1 KiB
C++
132 lines
4.1 KiB
C++
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/**********************************************************************/
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/** Microsoft Windows/NT **/
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/** Copyright(c) Microsoft Corp., 1992 **/
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/**********************************************************************/
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/*
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bltsplit.hxx
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Header file for the Splitter Bar custom control
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FILE HISTORY:
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jonn 08-Oct-93 Created (loosely based on bltmeter and bltlhour)
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*/
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#ifndef _BLTSPLIT_HXX_
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#define _BLTSPLIT_HXX_
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/**********************************************************\
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NAME: H_SPLITTER_BAR
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WORKBOOK:
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SYNOPSIS: Splitter bars can seperate the window pane into two or
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more parts. This splitter bar is modelled after
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WinWord 6's splitter bar, with visual modifications
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recommended by KeithL. A horizontal splitter bar is
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a horizontal line which can be moved vertically.
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INTERFACE:
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H_SPLITTER_BAR() - constructor
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QueryDesiredHeight() - returns the height which should
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be reserved for the splitter bar.
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Redefine these methods:
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OnDragRelease() - called when the splitter bar is moved.
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Param is the new position of splitter bar.
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QueryActiveArea() - called when splitter bar is painting
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or deciding whether click is in active area.
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Return width of scrollbar.
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MakeDisplayContext() - return a DISPLAY_CONTEXT in which
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the splitter bar can draw itself.
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PARENT: CUSTOM_CONTROL, CONTROL_WINDOW
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USES:
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NOTES: This could easily be generalized to allow both
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horizontal and vertical splitter bars.
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HISTORY:
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jonn 08-Oct-93 Created (loosely based on bltmeter and bltlhour)
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\**********************************************************/
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class H_SPLITTER_BAR : public CONTROL_WINDOW, public CUSTOM_CONTROL
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{
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private:
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BOOL _fCapturedMouse;
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INT _dxActiveArea;
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INT _dyLineWidth;
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XYRECT _xyrectHitZone;
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XYRECT _xyrectNotHitZone;
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DISPLAY_CONTEXT * _pdcDrag;
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BOOL _fInDrag;
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BOOL _fShowingDragBar;
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XYPOINT _xyLastDragPoint; // last drag point in client coordinates
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HCURSOR _hcurActive;
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HCURSOR _hcurSave;
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static const TCHAR * _pszClassName;
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VOID CtAux();
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VOID ShowSpecialCursor( BOOL fSpecialCursor );
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VOID ShowDragBar( const XYPOINT & xyClientCoords );
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VOID ClearDragBar();
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VOID InvertDragBar( const XYPOINT & xyClientCoords );
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protected:
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virtual BOOL OnResize( const SIZE_EVENT & );
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virtual BOOL OnPaintReq();
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virtual BOOL OnLMouseButtonDown( const MOUSE_EVENT & );
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virtual BOOL OnLMouseButtonUp( const MOUSE_EVENT & );
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virtual BOOL OnMouseMove( const MOUSE_EVENT & );
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virtual BOOL OnQMouseCursor( const QMOUSEACT_EVENT & );
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virtual ULONG OnQHitTest( const XYPOINT & xy );
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virtual BOOL Dispatch( const EVENT & e, ULONG * pnRes );
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/*
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* Return the width of the area of the splitter bar which can be
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* dragged. By default this is the width of a standard scrollbar.
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*/
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virtual INT QueryActiveArea();
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BOOL IsWithinHitZone( const XYPOINT & xy );
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/*
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* Subclass must come up with a new DISPLAY_CONTEXT in which we can draw
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* the bar to show splitter bar movement. H_SPLITTER_BAR is
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* responsible for releasing the DISPLAY_CONTEXT. Do not pass an
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* ionstance of a class derived from DISPLAY_CONTEXT, since the dtor
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* is not virtual.
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*/
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virtual VOID MakeDisplayContext( DISPLAY_CONTEXT ** ppdc ) = 0;
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/*
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* Subclasses receive this callout when the user releases from a drag.
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*/
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virtual VOID OnDragRelease( const XYPOINT & xyClientCoords );
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public:
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H_SPLITTER_BAR( OWNER_WINDOW *powin, CID cid );
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H_SPLITTER_BAR( OWNER_WINDOW *powin, CID cid,
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XYPOINT pXY, XYDIMENSION dXY,
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ULONG flStyle );
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~H_SPLITTER_BAR();
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INT QueryDesiredHeight();
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};
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#endif // _BLTSPLIT_HXX_
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