237 lines
7.2 KiB
C
237 lines
7.2 KiB
C
/*
|
|
* Scroll windows and DCs
|
|
*
|
|
* Copyright 1993 David W. Metcalfe
|
|
* Copyright 1995, 1996 Alex Korobka
|
|
* Copyright 2001 Alexandre Julliard
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "ts_xlib.h"
|
|
#include "ts_xutil.h"
|
|
|
|
#include "winbase.h"
|
|
#include "wingdi.h"
|
|
#include "winuser.h"
|
|
|
|
#include "x11drv.h"
|
|
#include "win.h"
|
|
#include "debugtools.h"
|
|
|
|
DEFAULT_DEBUG_CHANNEL(x11drv);
|
|
|
|
|
|
/*************************************************************************
|
|
* fix_caret
|
|
*/
|
|
static BOOL fix_caret(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;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* ScrollDC (X11DRV.@)
|
|
*
|
|
* Only the hrgnUpdate is returned in device coordinates.
|
|
* rcUpdate must be returned in logical coordinates to comply with win API.
|
|
* FIXME: the doc explicitly states the opposite, to be checked
|
|
*/
|
|
BOOL X11DRV_ScrollDC( HDC hdc, INT dx, INT dy, const RECT *rc,
|
|
const RECT *clipRect, HRGN hrgnUpdate, LPRECT rcUpdate )
|
|
{
|
|
RECT rect, rClip, rSrc;
|
|
|
|
TRACE( "%04x %d,%d hrgnUpdate=%04x rcUpdate = %p\n", hdc, dx, dy, hrgnUpdate, rcUpdate );
|
|
if (clipRect) TRACE( "cliprc = (%d,%d,%d,%d)\n",
|
|
clipRect->left, clipRect->top, clipRect->right, clipRect->bottom );
|
|
if (rc) TRACE( "rc = (%d,%d,%d,%d)\n", rc->left, rc->top, rc->right, rc->bottom );
|
|
|
|
/* compute device clipping region (in device coordinates) */
|
|
|
|
if (rc) rect = *rc;
|
|
else GetClipBox( hdc, &rect );
|
|
|
|
if (clipRect)
|
|
{
|
|
rClip = *clipRect;
|
|
IntersectRect( &rClip, &rect, &rClip );
|
|
}
|
|
else rClip = rect;
|
|
|
|
rSrc = rClip;
|
|
OffsetRect( &rSrc, -dx, -dy );
|
|
IntersectRect( &rSrc, &rSrc, &rect );
|
|
|
|
if (!IsRectEmpty(&rSrc))
|
|
{
|
|
/* copy bits */
|
|
if (!BitBlt( hdc, rSrc.left + dx, rSrc.top + dy,
|
|
rSrc.right - rSrc.left, rSrc.bottom - rSrc.top,
|
|
hdc, rSrc.left, rSrc.top, SRCCOPY))
|
|
return FALSE;
|
|
}
|
|
|
|
/* compute update areas */
|
|
|
|
if (hrgnUpdate || rcUpdate)
|
|
{
|
|
HRGN hrgn = hrgnUpdate, hrgn2;
|
|
POINT pt;
|
|
|
|
/* map everything to device coordinates */
|
|
pt.x = rect.left + dx;
|
|
pt.y = rect.top + dy;
|
|
LPtoDP( hdc, &pt, 1 );
|
|
LPtoDP( hdc, (LPPOINT)&rect, 2 );
|
|
LPtoDP( hdc, (LPPOINT)&rClip, 2 );
|
|
dx = pt.x - rect.left;
|
|
dy = pt.y - rect.top;
|
|
|
|
hrgn2 = CreateRectRgnIndirect( &rect );
|
|
if (hrgn) SetRectRgn( hrgn, rClip.left, rClip.top, rClip.right, rClip.bottom );
|
|
else hrgn = CreateRectRgn( 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 );
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* ScrollWindowEx (X11DRV.@)
|
|
*/
|
|
INT X11DRV_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;
|
|
}
|
|
hwnd = wnd->hwndSelf; /* make it a full handle */
|
|
|
|
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;
|
|
RECT caretrc;
|
|
|
|
TRACE( "%04x, %d,%d hrgnUpdate=%04x rcUpdate = %p rc=(%d,%d-%d,%d) %04x\n",
|
|
hwnd, dx, dy, hrgnUpdate, rcUpdate,
|
|
rc.left, rc.top, rc.right, rc.bottom, flags );
|
|
if (clipRect) TRACE( "cliprc = (%d,%d,%d,%d)\n",
|
|
clipRect->left, clipRect->top,
|
|
clipRect->right, clipRect->bottom );
|
|
|
|
caretrc = rc;
|
|
bCaret = fix_caret(hwnd, &caretrc, flags);
|
|
|
|
if( hrgnUpdate ) bOwnRgn = FALSE;
|
|
else if( bUpdate ) hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 );
|
|
|
|
hDC = GetDCEx( hwnd, 0, DCX_CACHE | DCX_USESTYLE );
|
|
if (hDC)
|
|
{
|
|
HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
|
|
X11DRV_StartGraphicsExposures( hDC );
|
|
X11DRV_ScrollDC( hDC, dx, dy, &rc, &cliprc, hrgnUpdate, rcUpdate );
|
|
X11DRV_EndGraphicsExposures( hDC, hrgn );
|
|
ReleaseDC( hwnd, hDC );
|
|
if (bUpdate) CombineRgn( hrgnUpdate, hrgnUpdate, hrgn, RGN_OR );
|
|
else RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_ERASE );
|
|
DeleteObject( hrgn );
|
|
}
|
|
|
|
/* Take into account the fact that some damages may have occured during the scroll */
|
|
hrgnTemp = CreateRectRgn( 0, 0, 0, 0 );
|
|
if (GetUpdateRgn( hwnd, hrgnTemp, FALSE ) != NULLREGION)
|
|
{
|
|
OffsetRgn( hrgnTemp, dx, dy );
|
|
CombineRgn( hrgnTemp, hrgnTemp, hrgnClip, RGN_AND );
|
|
RedrawWindow( hwnd, NULL, hrgnTemp, RDW_INVALIDATE | RDW_ERASE );
|
|
}
|
|
DeleteObject( hrgnTemp );
|
|
|
|
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 );
|
|
}
|
|
END:
|
|
WIN_ReleaseWndPtr(wnd);
|
|
return retVal;
|
|
}
|