Something went wrong. Try again.
Reactos
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132/* * Undocumented SmoothScrollWindow function from COMCTL32.DLL * * Copyright 2000 Marcus Meissner <marcus@jet.franken.de> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * * TODO * - actually add smooth scrolling */
#include <stdarg.h>
#include "windef.h"#include "winbase.h"#include "winreg.h"#include "winerror.h"#include "winuser.h"#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(commctrl);
static DWORD smoothscroll = 2;
typedef BOOL (CALLBACK *SCROLLWINDOWEXPROC)(HWND,INT,INT,LPRECT,LPRECT,HRGN,LPRECT,DWORD);typedef struct tagSMOOTHSCROLLSTRUCT { DWORD dwSize; DWORD x2; HWND hwnd; DWORD dx;
DWORD dy; LPRECT lpscrollrect; LPRECT lpcliprect; HRGN hrgnupdate;
LPRECT lpupdaterect; DWORD flags; DWORD stepinterval; DWORD dx_step;
DWORD dy_step; SCROLLWINDOWEXPROC scrollfun; /* same parameters as ScrollWindowEx */} SMOOTHSCROLLSTRUCT;
/************************************************************************** * SmoothScrollWindow [COMCTL32.382] * * Lots of magic for smooth scrolling windows. * * RETURNS * Success: TRUE * Failure: FALSE * * BUGS * Currently only scrolls ONCE. The comctl32 implementation uses GetTickCount * and what else to do smooth scrolling. */BOOL WINAPI SmoothScrollWindow( const SMOOTHSCROLLSTRUCT *smooth ) { LPRECT lpupdaterect = smooth->lpupdaterect; HRGN hrgnupdate = smooth->hrgnupdate; RECT tmprect; DWORD flags = smooth->flags;
if (smooth->dwSize!=sizeof(SMOOTHSCROLLSTRUCT)) return FALSE;
if (!lpupdaterect) lpupdaterect = &tmprect; SetRectEmpty(lpupdaterect);
if (!(flags & 0x40000)) { /* no override, use system wide defaults */ if (smoothscroll == 2) { HKEY hkey;
smoothscroll = 0; if (!RegOpenKeyA(HKEY_CURRENT_USER,"Control Panel\\Desktop",&hkey)) { DWORD len = 4;
RegQueryValueExA(hkey,"SmoothScroll",0,0,(LPBYTE)&smoothscroll,&len); RegCloseKey(hkey); } } if (!smoothscroll) flags |= 0x20000; }
if (flags & 0x20000) { /* are we doing jump scrolling? */ if ((smooth->x2 & 1) && smooth->scrollfun) return smooth->scrollfun( smooth->hwnd,smooth->dx,smooth->dy,smooth->lpscrollrect, smooth->lpcliprect,hrgnupdate,lpupdaterect, flags & 0xffff ); else return ScrollWindowEx( smooth->hwnd,smooth->dx,smooth->dy,smooth->lpscrollrect, smooth->lpcliprect,hrgnupdate,lpupdaterect, flags & 0xffff ); }
FIXME("(hwnd=%p,flags=%x,x2=%x): should smooth scroll here.\n", smooth->hwnd,flags,smooth->x2 ); /* FIXME: do timer based smooth scrolling */ if ((smooth->x2 & 1) && smooth->scrollfun) return smooth->scrollfun( smooth->hwnd,smooth->dx,smooth->dy,smooth->lpscrollrect, smooth->lpcliprect,hrgnupdate,lpupdaterect, flags & 0xffff ); else return ScrollWindowEx( smooth->hwnd,smooth->dx,smooth->dy,smooth->lpscrollrect, smooth->lpcliprect,hrgnupdate,lpupdaterect, flags & 0xffff );}