mirror of
git://source.winehq.org/git/wine.git
synced 2024-11-05 18:01:34 +00:00
135 lines
4.1 KiB
C
135 lines
4.1 KiB
C
/*
|
|
* Scroll windows and DCs
|
|
*
|
|
* Copyright David W. Metcalfe, 1993
|
|
* Alex Korobka 1995,1996
|
|
*
|
|
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "windef.h"
|
|
#include "wingdi.h"
|
|
#include "wine/winuser16.h"
|
|
#include "winuser.h"
|
|
#include "user.h"
|
|
#include "win.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(scroll);
|
|
|
|
/*************************************************************************
|
|
* fix_caret
|
|
*/
|
|
static HWND fix_caret(HWND hWnd, LPRECT lprc, UINT flags)
|
|
{
|
|
GUITHREADINFO info;
|
|
|
|
if (!GetGUIThreadInfo( GetCurrentThreadId(), &info )) return 0;
|
|
if (!info.hwndCaret) return 0;
|
|
if (info.hwndCaret == hWnd ||
|
|
((flags & SW_SCROLLCHILDREN) && IsChild(hWnd, info.hwndCaret)))
|
|
{
|
|
POINT pt;
|
|
pt.x = info.rcCaret.left;
|
|
pt.y = info.rcCaret.top;
|
|
MapWindowPoints( info.hwndCaret, hWnd, (LPPOINT)&info.rcCaret, 2 );
|
|
if( IntersectRect(lprc, lprc, &info.rcCaret) )
|
|
{
|
|
HideCaret(0);
|
|
lprc->left = pt.x;
|
|
lprc->top = pt.y;
|
|
return info.hwndCaret;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* ScrollWindow (USER32.@)
|
|
*
|
|
*/
|
|
BOOL WINAPI ScrollWindow( HWND hwnd, INT dx, INT dy,
|
|
const RECT *rect, const RECT *clipRect )
|
|
{
|
|
return
|
|
(ERROR != ScrollWindowEx( hwnd, dx, dy, rect, clipRect, 0, NULL,
|
|
(rect ? 0 : SW_SCROLLCHILDREN) |
|
|
SW_INVALIDATE ));
|
|
}
|
|
|
|
/*************************************************************************
|
|
* ScrollDC (USER32.@)
|
|
*
|
|
* Only the hrgnUpdate is return in device coordinate.
|
|
* rcUpdate must be returned in logical coordinate to comply with win API.
|
|
*
|
|
*/
|
|
BOOL WINAPI ScrollDC( HDC hdc, INT dx, INT dy, const RECT *rc,
|
|
const RECT *prLClip, HRGN hrgnUpdate,
|
|
LPRECT rcUpdate )
|
|
{
|
|
if (USER_Driver.pScrollDC)
|
|
return USER_Driver.pScrollDC( hdc, dx, dy, rc, prLClip, hrgnUpdate, rcUpdate );
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* ScrollWindowEx (USER32.@)
|
|
*
|
|
* NOTE: Use this function instead of ScrollWindow32
|
|
*/
|
|
INT WINAPI ScrollWindowEx( HWND hwnd, INT dx, INT dy,
|
|
const RECT *rect, const RECT *clipRect,
|
|
HRGN hrgnUpdate, LPRECT rcUpdate,
|
|
UINT flags )
|
|
{
|
|
RECT rc, cliprc;
|
|
INT result;
|
|
|
|
if (!WIN_IsWindowDrawable( hwnd, TRUE )) return ERROR;
|
|
hwnd = WIN_GetFullHandle( hwnd );
|
|
|
|
GetClientRect(hwnd, &rc);
|
|
if (rect) IntersectRect(&rc, &rc, rect);
|
|
|
|
if (clipRect) IntersectRect(&cliprc,&rc,clipRect);
|
|
else cliprc = rc;
|
|
|
|
if (!IsRectEmpty(&cliprc) && (dx || dy))
|
|
{
|
|
RECT caretrc = rc;
|
|
HWND hwndCaret = fix_caret(hwnd, &caretrc, flags);
|
|
|
|
if (USER_Driver.pScrollWindowEx)
|
|
result = USER_Driver.pScrollWindowEx( hwnd, dx, dy, &rc, &cliprc,
|
|
hrgnUpdate, rcUpdate, flags );
|
|
else
|
|
result = ERROR; /* FIXME: we should have a fallback implementation */
|
|
|
|
if( hwndCaret )
|
|
{
|
|
SetCaretPos( caretrc.left + dx, caretrc.top + dy );
|
|
ShowCaret(hwndCaret);
|
|
}
|
|
}
|
|
else
|
|
result = NULLREGION;
|
|
|
|
return result;
|
|
}
|