357 lines
11 KiB
C
357 lines
11 KiB
C
/*
|
|
* Scroll windows and DCs
|
|
*
|
|
* Copyright David W. Metcalfe, 1993
|
|
* Alex Korobka 1995,1996
|
|
*
|
|
*
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "windef.h"
|
|
#include "wingdi.h"
|
|
#include "wine/winuser16.h"
|
|
#include "winuser.h"
|
|
#include "win.h"
|
|
#include "gdi.h"
|
|
#include "dce.h"
|
|
#include "region.h"
|
|
#include "debugtools.h"
|
|
|
|
DEFAULT_DEBUG_CHANNEL(scroll);
|
|
|
|
/*************************************************************************
|
|
* ScrollWindow (USER.61)
|
|
*/
|
|
void WINAPI ScrollWindow16(HWND16 hwnd, INT16 dx, INT16 dy, const RECT16 *rect,
|
|
const RECT16 *clipRect )
|
|
{
|
|
RECT rect32, clipRect32;
|
|
|
|
if (rect) CONV_RECT16TO32( rect, &rect32 );
|
|
if (clipRect) CONV_RECT16TO32( clipRect, &clipRect32 );
|
|
ScrollWindow( hwnd, dx, dy, rect ? &rect32 : NULL,
|
|
clipRect ? &clipRect32 : NULL );
|
|
}
|
|
|
|
/*************************************************************************
|
|
* 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 (USER.221)
|
|
*/
|
|
BOOL16 WINAPI ScrollDC16( HDC16 hdc, INT16 dx, INT16 dy, const RECT16 *rect,
|
|
const RECT16 *cliprc, HRGN16 hrgnUpdate,
|
|
LPRECT16 rcUpdate )
|
|
{
|
|
RECT rect32, clipRect32, rcUpdate32;
|
|
BOOL16 ret;
|
|
|
|
if (rect) CONV_RECT16TO32( rect, &rect32 );
|
|
if (cliprc) CONV_RECT16TO32( cliprc, &clipRect32 );
|
|
ret = ScrollDC( hdc, dx, dy, rect ? &rect32 : NULL,
|
|
cliprc ? &clipRect32 : NULL, hrgnUpdate, &rcUpdate32 );
|
|
if (rcUpdate) CONV_RECT32TO16( &rcUpdate32, rcUpdate );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* 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 )
|
|
{
|
|
RECT rect, rClip, rSrc;
|
|
POINT src, dest;
|
|
DC *dc = DC_GetDCUpdate( hdc );
|
|
|
|
TRACE("%04x %d,%d hrgnUpdate=%04x rcUpdate = %p cliprc = (%d,%d-%d,%d), rc=(%d,%d-%d,%d)\n",
|
|
(HDC16)hdc, dx, dy, hrgnUpdate, rcUpdate,
|
|
prLClip ? prLClip->left : 0, prLClip ? prLClip->top : 0, prLClip ? prLClip->right : 0, prLClip ? prLClip->bottom : 0,
|
|
rc ? rc->left : 0, rc ? rc->top : 0, rc ? rc->right : 0, rc ? rc->bottom : 0 );
|
|
|
|
if ( !dc || !hdc ) return FALSE;
|
|
|
|
/*
|
|
TRACE(scroll,"\t[wndOrgX=%i, wndExtX=%i, vportOrgX=%i, vportExtX=%i]\n",
|
|
dc->wndOrgX, dc->wndExtX, dc->vportOrgX, dc->vportExtX );
|
|
TRACE(scroll,"\t[wndOrgY=%i, wndExtY=%i, vportOrgY=%i, vportExtY=%i]\n",
|
|
dc->wndOrgY, dc->wndExtY, dc->vportOrgY, dc->vportExtY );
|
|
*/
|
|
|
|
/* compute device clipping region (in device coordinates) */
|
|
|
|
if ( rc )
|
|
rect = *rc;
|
|
else /* maybe we should just return FALSE? */
|
|
GetClipBox( hdc, &rect );
|
|
|
|
LPtoDP( hdc, (LPPOINT)&rect, 2 );
|
|
|
|
if (prLClip)
|
|
{
|
|
rClip = *prLClip;
|
|
LPtoDP( hdc, (LPPOINT)&rClip, 2 );
|
|
IntersectRect( &rClip, &rect, &rClip );
|
|
}
|
|
else
|
|
rClip = rect;
|
|
|
|
dx = XLPTODP ( dc, rect.left + dx ) - XLPTODP ( dc, rect.left );
|
|
dy = YLPTODP ( dc, rect.top + dy ) - YLPTODP ( dc, rect.top );
|
|
|
|
rSrc = rClip;
|
|
OffsetRect( &rSrc, -dx, -dy );
|
|
IntersectRect( &rSrc, &rSrc, &rect );
|
|
|
|
if(dc->hVisRgn)
|
|
{
|
|
if (!IsRectEmpty(&rSrc))
|
|
{
|
|
dest.x = (src.x = rSrc.left) + dx;
|
|
dest.y = (src.y = rSrc.top) + dy;
|
|
|
|
/* copy bits */
|
|
|
|
DPtoLP( hdc, (LPPOINT)&rSrc, 2 );
|
|
DPtoLP( hdc, &src, 1 );
|
|
DPtoLP( hdc, &dest, 1 );
|
|
|
|
if (!BitBlt( hdc, dest.x, dest.y,
|
|
rSrc.right - rSrc.left, rSrc.bottom - rSrc.top,
|
|
hdc, src.x, src.y, SRCCOPY))
|
|
{
|
|
GDI_ReleaseObj( hdc );
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* compute update areas */
|
|
|
|
if (hrgnUpdate || rcUpdate)
|
|
{
|
|
HRGN hrgn =
|
|
(hrgnUpdate) ? hrgnUpdate : CreateRectRgn( 0,0,0,0 );
|
|
HRGN hrgn2;
|
|
|
|
hrgn2 = CreateRectRgnIndirect( &rect );
|
|
OffsetRgn( hrgn2, dc->DCOrgX, dc->DCOrgY );
|
|
CombineRgn( hrgn2, hrgn2, dc->hVisRgn, RGN_AND );
|
|
OffsetRgn( hrgn2, -dc->DCOrgX, -dc->DCOrgY );
|
|
SetRectRgn( hrgn, rClip.left, rClip.top,
|
|
rClip.right, rClip.bottom );
|
|
CombineRgn( hrgn, hrgn, hrgn2, RGN_AND );
|
|
OffsetRgn( hrgn2, dx, dy );
|
|
CombineRgn( hrgn, hrgn, hrgn2, RGN_DIFF );
|
|
|
|
if( rcUpdate )
|
|
{
|
|
GetRgnBox( hrgn, rcUpdate );
|
|
|
|
/* Put the rcUpdate in logical coordinate */
|
|
DPtoLP( hdc, (LPPOINT)rcUpdate, 2 );
|
|
}
|
|
if (!hrgnUpdate) DeleteObject( hrgn );
|
|
DeleteObject( hrgn2 );
|
|
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (hrgnUpdate) SetRectRgn(hrgnUpdate, 0, 0, 0, 0);
|
|
if (rcUpdate) SetRectEmpty(rcUpdate);
|
|
}
|
|
|
|
GDI_ReleaseObj( hdc );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* ScrollWindowEx (USER.319)
|
|
*/
|
|
INT16 WINAPI ScrollWindowEx16( HWND16 hwnd, INT16 dx, INT16 dy,
|
|
const RECT16 *rect, const RECT16 *clipRect,
|
|
HRGN16 hrgnUpdate, LPRECT16 rcUpdate,
|
|
UINT16 flags )
|
|
{
|
|
RECT rect32, clipRect32, rcUpdate32;
|
|
BOOL16 ret;
|
|
|
|
if (rect) CONV_RECT16TO32( rect, &rect32 );
|
|
if (clipRect) CONV_RECT16TO32( clipRect, &clipRect32 );
|
|
ret = ScrollWindowEx( hwnd, dx, dy, rect ? &rect32 : NULL,
|
|
clipRect ? &clipRect32 : NULL, hrgnUpdate,
|
|
(rcUpdate) ? &rcUpdate32 : NULL, flags );
|
|
if (rcUpdate) CONV_RECT32TO16( &rcUpdate32, rcUpdate );
|
|
return ret;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* SCROLL_FixCaret
|
|
*/
|
|
static BOOL SCROLL_FixCaret(HWND hWnd, LPRECT lprc, UINT flags)
|
|
{
|
|
HWND hCaret = CARET_GetHwnd();
|
|
|
|
if( hCaret )
|
|
{
|
|
RECT rc;
|
|
CARET_GetRect( &rc );
|
|
if( hCaret == hWnd ||
|
|
(flags & SW_SCROLLCHILDREN && IsChild(hWnd, hCaret)) )
|
|
{
|
|
POINT pt;
|
|
|
|
pt.x = rc.left; pt.y = rc.top;
|
|
MapWindowPoints( hCaret, hWnd, (LPPOINT)&rc, 2 );
|
|
if( IntersectRect(lprc, lprc, &rc) )
|
|
{
|
|
HideCaret(0);
|
|
lprc->left = pt.x; lprc->top = pt.y;
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
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 )
|
|
{
|
|
INT retVal = NULLREGION;
|
|
BOOL bCaret = FALSE, bOwnRgn = TRUE;
|
|
RECT rc, cliprc;
|
|
WND* wnd = WIN_FindWndPtr( hwnd );
|
|
|
|
if( !wnd || !WIN_IsWindowDrawable( wnd, TRUE ))
|
|
{
|
|
retVal = ERROR;
|
|
goto END;
|
|
}
|
|
|
|
GetClientRect(hwnd, &rc);
|
|
if (rect) IntersectRect(&rc, &rc, rect);
|
|
|
|
if (clipRect) IntersectRect(&cliprc,&rc,clipRect);
|
|
else cliprc = rc;
|
|
|
|
if (!IsRectEmpty(&cliprc) && (dx || dy))
|
|
{
|
|
HDC hDC;
|
|
BOOL bUpdate = (rcUpdate || hrgnUpdate || flags & (SW_INVALIDATE | SW_ERASE));
|
|
HRGN hrgnClip = CreateRectRgnIndirect(&cliprc);
|
|
HRGN hrgnTemp = CreateRectRgnIndirect(&rc);
|
|
RECT caretrc;
|
|
|
|
TRACE("%04x, %d,%d hrgnUpdate=%04x rcUpdate = %p \
|
|
cliprc = (%d,%d-%d,%d), rc=(%d,%d-%d,%d) %04x\n",
|
|
(HWND16)hwnd, dx, dy, hrgnUpdate, rcUpdate,
|
|
clipRect?clipRect->left:0, clipRect?clipRect->top:0, clipRect?clipRect->right:0, clipRect?clipRect->bottom:0,
|
|
rc.left, rc.top, rc.right, rc.bottom, (UINT16)flags );
|
|
|
|
caretrc = rc;
|
|
bCaret = SCROLL_FixCaret(hwnd, &caretrc, flags);
|
|
|
|
if( hrgnUpdate ) bOwnRgn = FALSE;
|
|
else if( bUpdate ) hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 );
|
|
|
|
hDC = GetDCEx( hwnd, hrgnClip, DCX_CACHE | DCX_USESTYLE |
|
|
DCX_KEEPCLIPRGN | DCX_INTERSECTRGN |
|
|
((flags & SW_SCROLLCHILDREN) ? DCX_NOCLIPCHILDREN : 0) );
|
|
if (hDC)
|
|
{
|
|
wnd->pDriver->pSurfaceCopy(wnd,hDC,dx,dy,&rc,bUpdate);
|
|
if( bUpdate )
|
|
{
|
|
DC* dc;
|
|
|
|
if( (dc = DC_GetDCPtr(hDC)) )
|
|
{
|
|
OffsetRgn( hrgnTemp, dc->DCOrgX, dc->DCOrgY );
|
|
CombineRgn( hrgnTemp, hrgnTemp, dc->hVisRgn,
|
|
RGN_AND );
|
|
OffsetRgn( hrgnTemp, -dc->DCOrgX, -dc->DCOrgY );
|
|
CombineRgn( hrgnUpdate, hrgnTemp, hrgnClip,
|
|
RGN_AND );
|
|
OffsetRgn( hrgnTemp, dx, dy );
|
|
retVal =
|
|
CombineRgn( hrgnUpdate, hrgnUpdate, hrgnTemp,
|
|
RGN_DIFF );
|
|
|
|
if( rcUpdate ) GetRgnBox( hrgnUpdate, rcUpdate );
|
|
GDI_ReleaseObj( hDC );
|
|
}
|
|
}
|
|
ReleaseDC(hwnd, hDC);
|
|
}
|
|
|
|
if( wnd->hrgnUpdate > 1 )
|
|
{
|
|
/* Takes into account the fact that some damages may have
|
|
occured during the scroll. */
|
|
CombineRgn( hrgnTemp, wnd->hrgnUpdate, 0, RGN_COPY );
|
|
OffsetRgn( hrgnTemp, dx, dy );
|
|
CombineRgn( hrgnTemp, hrgnTemp, hrgnClip, RGN_AND );
|
|
CombineRgn( wnd->hrgnUpdate, wnd->hrgnUpdate, hrgnTemp, RGN_OR );
|
|
}
|
|
|
|
if( flags & SW_SCROLLCHILDREN )
|
|
{
|
|
RECT r;
|
|
WND* w;
|
|
for( w =WIN_LockWndPtr(wnd->child); w; WIN_UpdateWndPtr(&w, w->next))
|
|
{
|
|
r = w->rectWindow;
|
|
if( !rect || IntersectRect(&r, &r, &rc) )
|
|
SetWindowPos(w->hwndSelf, 0, w->rectWindow.left + dx,
|
|
w->rectWindow.top + dy, 0,0, SWP_NOZORDER |
|
|
SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOREDRAW |
|
|
SWP_DEFERERASE );
|
|
}
|
|
}
|
|
|
|
if( flags & (SW_INVALIDATE | SW_ERASE) )
|
|
RedrawWindow( hwnd, NULL, hrgnUpdate, RDW_INVALIDATE | RDW_ERASE |
|
|
((flags & SW_ERASE) ? RDW_ERASENOW : 0) |
|
|
((flags & SW_SCROLLCHILDREN) ? RDW_ALLCHILDREN : 0 ) );
|
|
|
|
if( bCaret )
|
|
{
|
|
SetCaretPos( caretrc.left + dx, caretrc.top + dy );
|
|
ShowCaret(0);
|
|
}
|
|
|
|
if( bOwnRgn && hrgnUpdate ) DeleteObject( hrgnUpdate );
|
|
DeleteObject( hrgnClip );
|
|
DeleteObject( hrgnTemp );
|
|
}
|
|
END:
|
|
WIN_ReleaseWndPtr(wnd);
|
|
return retVal;
|
|
}
|