| /* | |
| * 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 "dc.h" | |
| #include "win.h" | |
| #include "gdi.h" | |
| #include "dce.h" | |
| #include "region.h" | |
| #include "debugtools.h" | |
| DEFAULT_DEBUG_CHANNEL(scroll) | |
| /************************************************************************* | |
| * ScrollWindow16 (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 ); | |
| } | |
| /************************************************************************* | |
| * ScrollWindow32 (USER32.450) | |
| * | |
| */ | |
| 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 )); | |
| } | |
| /************************************************************************* | |
| * ScrollDC16 (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; | |
| } | |
| /************************************************************************* | |
| * ScrollDC32 (USER32.449) | |
| * | |
| * 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 *)GDI_GetObjPtr(hdc, DC_MAGIC); | |
| 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 */ | |
| if ( rc ) | |
| rect = *rc; | |
| else /* maybe we should just return FALSE? */ | |
| GetClipBox( hdc, &rect ); | |
| if (prLClip) | |
| IntersectRect( &rClip,&rect,prLClip ); | |
| else | |
| rClip = rect; | |
| rSrc = rClip; | |
| OffsetRect( &rSrc, -dx, -dy ); | |
| IntersectRect( &rSrc, &rSrc, &rect ); | |
| if(dc->w.hVisRgn) | |
| { | |
| if (!IsRectEmpty(&rSrc)) | |
| { | |
| dest.x = (src.x = rSrc.left) + dx; | |
| dest.y = (src.y = rSrc.top) + dy; | |
| /* copy bits */ | |
| if (!BitBlt( hdc, dest.x, dest.y, | |
| rSrc.right - rSrc.left, rSrc.bottom - rSrc.top, | |
| hdc, src.x, src.y, SRCCOPY)) | |
| { | |
| GDI_HEAP_UNLOCK( hdc ); | |
| return FALSE; | |
| } | |
| } | |
| /* compute update areas */ | |
| if (hrgnUpdate || rcUpdate) | |
| { | |
| HRGN hrgn = | |
| (hrgnUpdate) ? hrgnUpdate : CreateRectRgn( 0,0,0,0 ); | |
| HRGN hrgn2; | |
| dx = XLPTODP ( dc, rect.left + dx) - XLPTODP ( dc, rect.left); | |
| dy = YLPTODP ( dc, rect.top + dy) - YLPTODP ( dc, rect.top); | |
| LPtoDP( hdc, (LPPOINT)&rect, 2 ); | |
| LPtoDP( hdc, (LPPOINT)&rClip, 2 ); | |
| hrgn2 = CreateRectRgnIndirect( &rect ); | |
| OffsetRgn( hrgn2, dc->w.DCOrgX, dc->w.DCOrgY ); | |
| CombineRgn( hrgn2, hrgn2, dc->w.hVisRgn, RGN_AND ); | |
| OffsetRgn( hrgn2, -dc->w.DCOrgX, -dc->w.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_HEAP_UNLOCK( hdc ); | |
| return TRUE; | |
| } | |
| /************************************************************************* | |
| * ScrollWindowEx16 (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; | |
| } | |
| /************************************************************************* | |
| * ScrollWindowEx32 (USER32.451) | |
| * | |
| * 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)) | |
| { | |
| DC* dc; | |
| 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( (dc = (DC *)GDI_GetObjPtr(hDC, DC_MAGIC)) ) | |
| { | |
| if (dc->w.hVisRgn) { | |
| wnd->pDriver->pSurfaceCopy(wnd,dc,dx,dy,&rc,bUpdate); | |
| if( bUpdate ) | |
| { | |
| OffsetRgn( hrgnTemp, dc->w.DCOrgX, dc->w.DCOrgY ); | |
| CombineRgn( hrgnTemp, hrgnTemp, dc->w.hVisRgn, | |
| RGN_AND ); | |
| OffsetRgn( hrgnTemp, -dc->w.DCOrgX, -dc->w.DCOrgY ); | |
| CombineRgn( hrgnUpdate, hrgnTemp, hrgnClip, | |
| RGN_AND ); | |
| OffsetRgn( hrgnTemp, dx, dy ); | |
| retVal = | |
| CombineRgn( hrgnUpdate, hrgnUpdate, hrgnTemp, | |
| RGN_DIFF ); | |
| if( rcUpdate ) GetRgnBox( hrgnUpdate, rcUpdate ); | |
| } | |
| } | |
| ReleaseDC(hwnd, hDC); | |
| GDI_HEAP_UNLOCK( 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)) | |
| { | |
| CONV_RECT16TO32( &w->rectWindow, &r ); | |
| if( 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) ) | |
| PAINT_RedrawWindow( hwnd, NULL, hrgnUpdate, RDW_INVALIDATE | RDW_ERASE | | |
| ((flags & SW_ERASE) ? RDW_ERASENOW : 0) | ((flags & SW_SCROLLCHILDREN) ? RDW_ALLCHILDREN : 0 ), 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; | |
| } |