/* * Window painting functions * * Copyright 1993, 1994, 1995 Alexandre Julliard * 1999 Alex Korobka * * 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 "config.h" #include "wine/port.h" #include #include #include "windef.h" #include "winbase.h" #include "wingdi.h" #include "wine/winuser16.h" #include "wownt32.h" #include "wine/unicode.h" #include "wine/server.h" #include "user.h" #include "win.h" #include "message.h" #include "dce.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(win); WINE_DECLARE_DEBUG_CHANNEL(nonclient); /* client rect in window coordinates */ #define GETCLIENTRECTW( wnd, r ) (r).left = (wnd)->rectClient.left - (wnd)->rectWindow.left; \ (r).top = (wnd)->rectClient.top - (wnd)->rectWindow.top; \ (r).right = (wnd)->rectClient.right - (wnd)->rectWindow.left; \ (r).bottom = (wnd)->rectClient.bottom - (wnd)->rectWindow.top /* PAINT_RedrawWindow() control flags */ #define RDW_EX_DELAY_NCPAINT 0x0020 /* WIN_UpdateNCRgn() flags */ #define UNC_CHECK 0x0001 #define UNC_ENTIRE 0x0002 #define UNC_REGION 0x0004 #define UNC_UPDATE 0x0008 #define UNC_DELAY_NCPAINT 0x0010 #define UNC_IN_BEGINPAINT 0x0020 HPALETTE (WINAPI *pfnGDISelectPalette)(HDC hdc, HPALETTE hpal, WORD bkgnd ) = NULL; UINT (WINAPI *pfnGDIRealizePalette)(HDC hdc) = NULL; /*********************************************************************** * add_paint_count * * Add an increment (normally 1 or -1) to the current paint count of a window. */ static void add_paint_count( HWND hwnd, int incr ) { SERVER_START_REQ( inc_window_paint_count ) { req->handle = hwnd; req->incr = incr; wine_server_call( req ); } SERVER_END_REQ; } /*********************************************************************** * crop_rgn * * hSrc: Region to crop. * lpRect: Clipping rectangle. * * hDst: Region to hold the result (a new region is created if it's 0). * Allowed to be the same region as hSrc in which case everything * will be done in place, with no memory reallocations. * * Returns: hDst if success, 0 otherwise. */ static HRGN crop_rgn( HRGN hDst, HRGN hSrc, const RECT *rect ) { HRGN h = CreateRectRgnIndirect( rect ); if (hDst == 0) hDst = h; CombineRgn( hDst, hSrc, h, RGN_AND ); if (hDst != h) DeleteObject( h ); return hDst; } /*********************************************************************** * WIN_HaveToDelayNCPAINT * * Currently, in the Wine painting mechanism, the WM_NCPAINT message * is generated as soon as a region intersecting the non-client area * of a window is invalidated. * * This technique will work fine for all windows whose parents * have the WS_CLIPCHILDREN style. When the parents have that style, * they are not going to override the contents of their children. * However, when the parent doesn't have that style, Windows relies * on a "painter's algorithm" to display the contents of the windows. * That is, windows are painted from back to front. This includes the * non-client area. * * This method looks at the current state of a window to determine * if the sending of the WM_NCPAINT message should be delayed until * the BeginPaint call. * * PARAMS: * wndPtr - A Locked window pointer to the window we're * examining. * uncFlags - This is the flag passed to the WIN_UpdateNCRgn * function. This is a shortcut for the cases when * we already know when to avoid scanning all the * parents of a window. If you already know that this * window's NCPAINT should be delayed, set the * UNC_DELAY_NCPAINT flag for this parameter. * * This shortcut behavior is implemented in the * RDW_Paint() method. * */ static BOOL WIN_HaveToDelayNCPAINT( HWND hwnd, UINT uncFlags) { /* * Test the shortcut first. (duh) */ if (uncFlags & UNC_DELAY_NCPAINT) return TRUE; /* * The UNC_IN_BEGINPAINT flag is set in the BeginPaint * method only. This is another shortcut to avoid going * up the parent's chain of the window to finally * figure-out that none of them has an invalid region. */ if (uncFlags & UNC_IN_BEGINPAINT) return FALSE; /* * Scan all the parents of this window to find a window * that doesn't have the WS_CLIPCHILDREN style and that * has an invalid region. */ while ((hwnd = GetAncestor( hwnd, GA_PARENT ))) { WND* parentWnd = WIN_FindWndPtr( hwnd ); if (parentWnd && !(parentWnd->dwStyle & WS_CLIPCHILDREN) && parentWnd->hrgnUpdate) { WIN_ReleaseWndPtr( parentWnd ); return TRUE; } WIN_ReleaseWndPtr( parentWnd ); } return FALSE; } /*********************************************************************** * WIN_UpdateNCRgn * * Things to do: * Send WM_NCPAINT if required (when nonclient is invalid or UNC_ENTIRE flag is set) * Crop hrgnUpdate to a client rect, especially if it 1. * If UNC_REGION is set return update region for the client rect. * * NOTE: UNC_REGION is mainly for the RDW_Paint() chunk that sends WM_ERASEBKGND message. * The trick is that when the returned region handle may be different from hRgn. * In this case the old hRgn must be considered gone. BUT, if the returned value * is 1 then the hRgn is preserved and RDW_Paint() will have to get * a DC without extra clipping region. */ static HRGN WIN_UpdateNCRgn(WND* wnd, HRGN hRgn, UINT uncFlags ) { RECT r; HRGN hClip = 0; HRGN hrgnRet = 0; TRACE_(nonclient)("hwnd %p [%p] hrgn %p, unc %04x, ncf %i\n", wnd->hwndSelf, wnd->hrgnUpdate, hRgn, uncFlags, wnd->flags & WIN_NEEDS_NCPAINT); /* desktop window doesn't have a nonclient area */ if(wnd->hwndSelf == GetDesktopWindow()) { wnd->flags &= ~WIN_NEEDS_NCPAINT; if( wnd->hrgnUpdate > (HRGN)1 ) { if (!hRgn) hRgn = CreateRectRgn( 0, 0, 0, 0 ); CombineRgn( hRgn, wnd->hrgnUpdate, 0, RGN_COPY ); hrgnRet = hRgn; } else { hrgnRet = wnd->hrgnUpdate; } return hrgnRet; } if ((wnd->hwndSelf == GetForegroundWindow()) && !(wnd->flags & WIN_NCACTIVATED) ) { wnd->flags |= WIN_NCACTIVATED; uncFlags |= UNC_ENTIRE; } /* * If the window's non-client area needs to be painted, */ if ( ( wnd->flags & WIN_NEEDS_NCPAINT ) && !WIN_HaveToDelayNCPAINT(wnd->hwndSelf, uncFlags) ) { RECT r2, r3; wnd->flags &= ~WIN_NEEDS_NCPAINT; GETCLIENTRECTW( wnd, r ); TRACE_(nonclient)( "\tclient box (%ld,%ld-%ld,%ld), hrgnUpdate %p\n", r.left, r.top, r.right, r.bottom, wnd->hrgnUpdate ); if( wnd->hrgnUpdate > (HRGN)1 ) { /* Check if update rgn overlaps with nonclient area */ GetRgnBox( wnd->hrgnUpdate, &r2 ); UnionRect( &r3, &r2, &r ); if( r3.left != r.left || r3.top != r.top || r3.right != r.right || r3.bottom != r.bottom ) /* it does */ { /* crop hrgnUpdate, save old one in hClip - the only * case that places a valid region handle in hClip */ hClip = wnd->hrgnUpdate; wnd->hrgnUpdate = crop_rgn( hRgn, hClip, &r ); if( uncFlags & UNC_REGION ) hrgnRet = hClip; } if( uncFlags & UNC_CHECK ) { GetRgnBox( wnd->hrgnUpdate, &r3 ); if( IsRectEmpty( &r3 ) ) { /* delete the update region since all invalid * parts were in the nonclient area */ DeleteObject( wnd->hrgnUpdate ); wnd->hrgnUpdate = 0; if(!(wnd->flags & WIN_INTERNAL_PAINT)) add_paint_count( wnd->hwndSelf, -1 ); wnd->flags &= ~WIN_NEEDS_ERASEBKGND; } } if(!hClip && wnd->hrgnUpdate ) goto copyrgn; } else if( wnd->hrgnUpdate == (HRGN)1 )/* entire window */ { if( uncFlags & UNC_UPDATE ) wnd->hrgnUpdate = CreateRectRgnIndirect( &r ); if( uncFlags & UNC_REGION ) hrgnRet = (HRGN)1; uncFlags |= UNC_ENTIRE; } } else /* no WM_NCPAINT unless forced */ { if( wnd->hrgnUpdate > (HRGN)1 ) { copyrgn: if( uncFlags & UNC_REGION ) { if (!hRgn) hRgn = CreateRectRgn( 0, 0, 0, 0 ); CombineRgn( hRgn, wnd->hrgnUpdate, 0, RGN_COPY ); hrgnRet = hRgn; } } else if( wnd->hrgnUpdate == (HRGN)1 && (uncFlags & UNC_UPDATE) ) { GETCLIENTRECTW( wnd, r ); wnd->hrgnUpdate = CreateRectRgnIndirect( &r ); if( uncFlags & UNC_REGION ) hrgnRet = (HRGN)1; } } if(!hClip && (uncFlags & UNC_ENTIRE) ) { /* still don't do anything if there is no nonclient area */ hClip = (HRGN)(memcmp( &wnd->rectWindow, &wnd->rectClient, sizeof(RECT) ) != 0); } if( hClip ) /* NOTE: WM_NCPAINT allows wParam to be 1 */ { if ( hClip == hrgnRet && hrgnRet > (HRGN)1 ) { hClip = CreateRectRgn( 0, 0, 0, 0 ); CombineRgn( hClip, hrgnRet, 0, RGN_COPY ); } SendMessageA( wnd->hwndSelf, WM_NCPAINT, (WPARAM)hClip, 0L ); if( (hClip > (HRGN)1) && (hClip != hRgn) && (hClip != hrgnRet) ) DeleteObject( hClip ); /* * Since all Window locks are suspended while processing the WM_NCPAINT * we want to make sure the window still exists before continuing. */ if (!IsWindow(wnd->hwndSelf)) { DeleteObject(hrgnRet); hrgnRet=0; } } TRACE_(nonclient)("returning %p (hClip = %p, hrgnUpdate = %p)\n", hrgnRet, hClip, wnd->hrgnUpdate ); return hrgnRet; } /*********************************************************************** * RDW_ValidateParent [RDW_UpdateRgns() helper] * * Validate the portions of parents that are covered by a validated child * wndPtr = child */ static void RDW_ValidateParent(WND *wndChild) { HWND parent; HRGN hrg; if (wndChild->hrgnUpdate == (HRGN)1 ) { RECT r; r.left = 0; r.top = 0; r.right = wndChild->rectWindow.right - wndChild->rectWindow.left; r.bottom = wndChild->rectWindow.bottom - wndChild->rectWindow.top; hrg = CreateRectRgnIndirect( &r ); } else hrg = wndChild->hrgnUpdate; parent = GetAncestor( wndChild->hwndSelf, GA_PARENT ); while (parent && parent != GetDesktopWindow()) { WND *wndParent = WIN_FindWndPtr( parent ); if (wndParent && !(wndParent->dwStyle & WS_CLIPCHILDREN)) { if (wndParent->hrgnUpdate != 0) { POINT ptOffset; RECT rect, rectParent; if( wndParent->hrgnUpdate == (HRGN)1 ) { RECT r; r.left = 0; r.top = 0; r.right = wndParent->rectWindow.right - wndParent->rectWindow.left; r.bottom = wndParent->rectWindow.bottom - wndParent->rectWindow.top; wndParent->hrgnUpdate = CreateRectRgnIndirect( &r ); } /* we must offset the child region by the offset of the child rect in the parent */ GetWindowRect(wndParent->hwndSelf, &rectParent); GetWindowRect(wndChild->hwndSelf, &rect); ptOffset.x = rect.left - rectParent.left; ptOffset.y = rect.top - rectParent.top; OffsetRgn( hrg, ptOffset.x, ptOffset.y ); if (CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF ) == NULLREGION) { /* the update region has become empty */ DeleteObject( wndParent->hrgnUpdate ); wndParent->hrgnUpdate = 0; wndParent->flags &= ~WIN_NEEDS_ERASEBKGND; if( !(wndParent->flags & WIN_INTERNAL_PAINT) ) add_paint_count( wndParent->hwndSelf, -1 ); } OffsetRgn( hrg, -ptOffset.x, -ptOffset.y ); } } WIN_ReleaseWndPtr( wndParent ); parent = GetAncestor( parent, GA_PARENT ); } if (hrg != wndChild->hrgnUpdate) DeleteObject( hrg ); } /*********************************************************************** * RDW_UpdateRgns [RedrawWindow() helper] * * Walks the window tree and adds/removes parts of the hRgn to/from update * regions of windows that overlap it. Also, manages internal paint flags. * * NOTE: Walks the window tree so the caller must lock it. * MUST preserve hRgn (can modify but then has to restore). */ static void RDW_UpdateRgns( WND* wndPtr, HRGN hRgn, UINT flags, BOOL firstRecursLevel ) { /* * Called only when one of the following is set: * (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT) */ BOOL bHadOne = wndPtr->hrgnUpdate && hRgn; BOOL bChildren = (!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) && ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) ); RECT r; r.left = 0; r.top = 0; r.right = wndPtr->rectWindow.right - wndPtr->rectWindow.left; r.bottom = wndPtr->rectWindow.bottom - wndPtr->rectWindow.top; TRACE("\thwnd %p [%p] -> hrgn [%p], flags [%04x]\n", wndPtr->hwndSelf, wndPtr->hrgnUpdate, hRgn, flags ); if( flags & RDW_INVALIDATE ) { if( hRgn > (HRGN)1 ) { switch ((UINT)wndPtr->hrgnUpdate) { default: CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_OR ); /* fall through */ case 0: wndPtr->hrgnUpdate = crop_rgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate ? wndPtr->hrgnUpdate : hRgn, &r ); if( !bHadOne ) { GetRgnBox( wndPtr->hrgnUpdate, &r ); if( IsRectEmpty( &r ) ) { DeleteObject( wndPtr->hrgnUpdate ); wndPtr->hrgnUpdate = 0; goto end; } } break; case 1: /* already an entire window */ break; } } else if( hRgn == (HRGN)1 ) { if( wndPtr->hrgnUpdate > (HRGN)1 ) DeleteObject( wndPtr->hrgnUpdate ); wndPtr->hrgnUpdate = (HRGN)1; } else { /* hRgn is zero */ if( wndPtr->hrgnUpdate > (HRGN)1) { GetRgnBox( wndPtr->hrgnUpdate, &r ); if( IsRectEmpty( &r ) ) { DeleteObject( wndPtr->hrgnUpdate ); wndPtr->hrgnUpdate = 0; goto end; } } hRgn = wndPtr->hrgnUpdate; /* this is a trick that depends * on code in RDW_Paint() */ } if( !bHadOne && !(wndPtr->flags & WIN_INTERNAL_PAINT) ) add_paint_count( wndPtr->hwndSelf, 1 ); if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT; if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND; flags |= RDW_FRAME; } else if( flags & RDW_VALIDATE ) { if( wndPtr->hrgnUpdate ) { if( hRgn > (HRGN)1 ) { if( wndPtr->hrgnUpdate == (HRGN)1 ) wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r ); if( CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_DIFF ) == NULLREGION ) { DeleteObject( wndPtr->hrgnUpdate ); wndPtr->hrgnUpdate = 0; } } else /* validate everything */ { if( wndPtr->hrgnUpdate > (HRGN)1 ) DeleteObject( wndPtr->hrgnUpdate ); wndPtr->hrgnUpdate = 0; } if( !wndPtr->hrgnUpdate ) { wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND; if( !(wndPtr->flags & WIN_INTERNAL_PAINT) ) add_paint_count( wndPtr->hwndSelf, -1 ); } } if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT; if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND; } if ((firstRecursLevel) && (wndPtr->hrgnUpdate != 0) && (flags & RDW_UPDATENOW)) RDW_ValidateParent(wndPtr); /* validate parent covered by region */ /* in/validate child windows that intersect with the region if it * is a valid handle. */ if( flags & (RDW_INVALIDATE | RDW_VALIDATE) ) { HWND *list; if( hRgn > (HRGN)1 && bChildren && (list = WIN_ListChildren( wndPtr->hwndSelf ))) { POINT ptTotal, prevOrigin = {0,0}; POINT ptClient; INT i; ptClient.x = wndPtr->rectClient.left - wndPtr->rectWindow.left; ptClient.y = wndPtr->rectClient.top - wndPtr->rectWindow.top; for(i = ptTotal.x = ptTotal.y = 0; list[i]; i++) { WND *wnd = WIN_FindWndPtr( list[i] ); if (!wnd) continue; if( wnd->dwStyle & WS_VISIBLE ) { POINT ptOffset; r.left = wnd->rectWindow.left + ptClient.x; r.right = wnd->rectWindow.right + ptClient.x; r.top = wnd->rectWindow.top + ptClient.y; r.bottom = wnd->rectWindow.bottom + ptClient.y; ptOffset.x = r.left - prevOrigin.x; ptOffset.y = r.top - prevOrigin.y; OffsetRect( &r, -ptTotal.x, -ptTotal.y ); if( RectInRegion( hRgn, &r ) ) { OffsetRgn( hRgn, -ptOffset.x, -ptOffset.y ); RDW_UpdateRgns( wnd, hRgn, flags, FALSE ); prevOrigin.x = r.left + ptTotal.x; prevOrigin.y = r.top + ptTotal.y; ptTotal.x += ptOffset.x; ptTotal.y += ptOffset.y; } } WIN_ReleaseWndPtr( wnd ); } HeapFree( GetProcessHeap(), 0, list ); OffsetRgn( hRgn, ptTotal.x, ptTotal.y ); bChildren = 0; } } /* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */ if( bChildren ) { HWND *list; if ((list = WIN_ListChildren( wndPtr->hwndSelf ))) { INT i; for (i = 0; list[i]; i++) { WND *wnd = WIN_FindWndPtr( list[i] ); if (!wnd) continue; if( wnd->dwStyle & WS_VISIBLE ) RDW_UpdateRgns( wnd, hRgn, flags, FALSE ); WIN_ReleaseWndPtr( wnd ); } HeapFree( GetProcessHeap(), 0, list ); } } end: /* Set/clear internal paint flag */ if (flags & RDW_INTERNALPAINT) { if ( !wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT)) add_paint_count( wndPtr->hwndSelf, 1 ); wndPtr->flags |= WIN_INTERNAL_PAINT; } else if (flags & RDW_NOINTERNALPAINT) { if ( !wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT)) add_paint_count( wndPtr->hwndSelf, -1 ); wndPtr->flags &= ~WIN_INTERNAL_PAINT; } } /*********************************************************************** * RDW_Paint [RedrawWindow() helper] * * Walks the window tree and paints/erases windows that have * nonzero update regions according to redraw flags. hrgn is a scratch * region passed down during recursion. Must not be 1. * */ static HRGN RDW_Paint( WND* wndPtr, HRGN hrgn, UINT flags, UINT ex ) { /* NOTE: wndPtr is locked by caller. * * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask * SendMessage() calls. This is a comment inside DefWindowProc() source * from 16-bit SDK: * * This message avoids lots of inter-app message traffic * by switching to the other task and continuing the * recursion there. * * wParam = flags * LOWORD(lParam) = hrgnClip * HIWORD(lParam) = hwndSkip (not used; always NULL) * */ HDC hDC; HWND hWnd = wndPtr->hwndSelf; BOOL bIcon = ((wndPtr->dwStyle & WS_MINIMIZE) && GetClassLongA(hWnd, GCL_HICON)); /* Erase/update the window itself ... */ TRACE("\thwnd %p [%p] -> hrgn [%p], flags [%04x]\n", hWnd, wndPtr->hrgnUpdate, hrgn, flags ); /* * Check if this window should delay it's processing of WM_NCPAINT. * See WIN_HaveToDelayNCPAINT for a description of the mechanism */ if ((ex & RDW_EX_DELAY_NCPAINT) || WIN_HaveToDelayNCPAINT(wndPtr->hwndSelf, 0) ) ex |= RDW_EX_DELAY_NCPAINT; if (flags & RDW_UPDATENOW) { if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */ SendMessageW( hWnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 ); } else if (flags & RDW_ERASENOW) { UINT dcx = DCX_INTERSECTRGN | DCX_USESTYLE | DCX_KEEPCLIPRGN | DCX_WINDOWPAINT | DCX_CACHE; HRGN hrgnRet; hrgnRet = WIN_UpdateNCRgn(wndPtr, hrgn, UNC_REGION | UNC_CHECK | ((ex & RDW_EX_DELAY_NCPAINT) ? UNC_DELAY_NCPAINT : 0) ); if( hrgnRet ) { if( hrgnRet > (HRGN)1 ) hrgn = hrgnRet; else hrgnRet = 0; /* entire client */ if( wndPtr->flags & WIN_NEEDS_ERASEBKGND ) { if( bIcon ) dcx |= DCX_WINDOW; else if( hrgnRet ) OffsetRgn( hrgnRet, wndPtr->rectWindow.left - wndPtr->rectClient.left, wndPtr->rectWindow.top - wndPtr->rectClient.top); else dcx &= ~DCX_INTERSECTRGN; if (( hDC = GetDCEx( hWnd, hrgnRet, dcx )) ) { if (SendMessageW( hWnd, (bIcon) ? WM_ICONERASEBKGND : WM_ERASEBKGND, (WPARAM)hDC, 0 )) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND; ReleaseDC( hWnd, hDC ); } } } } if( !IsWindow(hWnd) ) return hrgn; /* ... and its child windows */ if(!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) && ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) ) { HWND *list, *phwnd; if( (list = WIN_ListChildren( wndPtr->hwndSelf )) ) { for (phwnd = list; *phwnd; phwnd++) { if (!(wndPtr = WIN_FindWndPtr( *phwnd ))) continue; if ( (wndPtr->dwStyle & WS_VISIBLE) && (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) ) hrgn = RDW_Paint( wndPtr, hrgn, flags, ex ); WIN_ReleaseWndPtr(wndPtr); } HeapFree( GetProcessHeap(), 0, list ); } } return hrgn; } /*********************************************************************** * dump_rdw_flags */ static void dump_rdw_flags(UINT flags) { TRACE("flags:"); if (flags & RDW_INVALIDATE) TRACE(" RDW_INVALIDATE"); if (flags & RDW_INTERNALPAINT) TRACE(" RDW_INTERNALPAINT"); if (flags & RDW_ERASE) TRACE(" RDW_ERASE"); if (flags & RDW_VALIDATE) TRACE(" RDW_VALIDATE"); if (flags & RDW_NOINTERNALPAINT) TRACE(" RDW_NOINTERNALPAINT"); if (flags & RDW_NOERASE) TRACE(" RDW_NOERASE"); if (flags & RDW_NOCHILDREN) TRACE(" RDW_NOCHILDREN"); if (flags & RDW_ALLCHILDREN) TRACE(" RDW_ALLCHILDREN"); if (flags & RDW_UPDATENOW) TRACE(" RDW_UPDATENOW"); if (flags & RDW_ERASENOW) TRACE(" RDW_ERASENOW"); if (flags & RDW_FRAME) TRACE(" RDW_FRAME"); if (flags & RDW_NOFRAME) TRACE(" RDW_NOFRAME"); #define RDW_FLAGS \ (RDW_INVALIDATE | \ RDW_INTERNALPAINT | \ RDW_ERASE | \ RDW_VALIDATE | \ RDW_NOINTERNALPAINT | \ RDW_NOERASE | \ RDW_NOCHILDREN | \ RDW_ALLCHILDREN | \ RDW_UPDATENOW | \ RDW_ERASENOW | \ RDW_FRAME | \ RDW_NOFRAME) if (flags & ~RDW_FLAGS) TRACE(" %04x", flags & ~RDW_FLAGS); TRACE("\n"); #undef RDW_FLAGS } /*********************************************************************** * RedrawWindow (USER32.@) */ BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate, HRGN hrgnUpdate, UINT flags ) { HRGN hRgn = 0; RECT r, r2; POINT pt; WND* wndPtr; if (!hwnd) hwnd = GetDesktopWindow(); /* check if the window or its parents are visible/not minimized */ if (!WIN_IsWindowDrawable( hwnd, !(flags & RDW_FRAME) )) return TRUE; /* process pending events and messages before painting */ if (flags & RDW_UPDATENOW) MsgWaitForMultipleObjects( 0, NULL, FALSE, 0, QS_ALLINPUT ); if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE; if (TRACE_ON(win)) { if( hrgnUpdate ) { GetRgnBox( hrgnUpdate, &r ); TRACE( "%p (%p) NULL %p box (%ld,%ld-%ld,%ld) flags=%04x\n", hwnd, wndPtr->hrgnUpdate, hrgnUpdate, r.left, r.top, r.right, r.bottom, flags ); } else { if( rectUpdate ) r = *rectUpdate; else SetRectEmpty( &r ); TRACE( "%p (%p) %s %ld,%ld-%ld,%ld %p flags=%04x\n", hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left, r.top, r.right, r.bottom, hrgnUpdate, flags ); } dump_rdw_flags(flags); } /* prepare an update region in window coordinates */ if (((flags & (RDW_INVALIDATE|RDW_FRAME)) == (RDW_INVALIDATE|RDW_FRAME)) || ((flags & (RDW_VALIDATE|RDW_NOFRAME)) == (RDW_VALIDATE|RDW_NOFRAME))) r = wndPtr->rectWindow; else r = wndPtr->rectClient; pt.x = wndPtr->rectClient.left - wndPtr->rectWindow.left; pt.y = wndPtr->rectClient.top - wndPtr->rectWindow.top; OffsetRect( &r, -wndPtr->rectClient.left, -wndPtr->rectClient.top ); if (flags & RDW_INVALIDATE) /* ------------------------- Invalidate */ { /* If the window doesn't have hrgnUpdate we leave hRgn zero * and put a new region straight into wndPtr->hrgnUpdate * so that RDW_UpdateRgns() won't have to do any extra work. */ if( hrgnUpdate ) { if( wndPtr->hrgnUpdate ) { hRgn = CreateRectRgn( 0, 0, 0, 0 ); CombineRgn( hRgn, hrgnUpdate, 0, RGN_COPY ); OffsetRgn( hRgn, pt.x, pt.y ); } else { wndPtr->hrgnUpdate = crop_rgn( 0, hrgnUpdate, &r ); OffsetRgn( wndPtr->hrgnUpdate, pt.x, pt.y ); } } else if( rectUpdate ) { if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END; OffsetRect( &r2, pt.x, pt.y ); if( wndPtr->hrgnUpdate == 0 ) wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 ); else hRgn = CreateRectRgnIndirect( &r2 ); } else /* entire window or client depending on RDW_FRAME */ { if( flags & RDW_FRAME ) { if (wndPtr->hrgnUpdate) hRgn = (HRGN)1; else wndPtr->hrgnUpdate = (HRGN)1; } else { GETCLIENTRECTW( wndPtr, r2 ); if( wndPtr->hrgnUpdate == 0 ) wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 ); else hRgn = CreateRectRgnIndirect( &r2 ); } } } else if (flags & RDW_VALIDATE) /* ------------------------- Validate */ { /* In this we cannot leave with zero hRgn */ if( hrgnUpdate ) { hRgn = crop_rgn( hRgn, hrgnUpdate, &r ); OffsetRgn( hRgn, pt.x, pt.y ); GetRgnBox( hRgn, &r2 ); if( IsRectEmpty( &r2 ) ) goto END; } else if( rectUpdate ) { if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END; OffsetRect( &r2, pt.x, pt.y ); hRgn = CreateRectRgnIndirect( &r2 ); } else /* entire window or client depending on RDW_NOFRAME */ { if( flags & RDW_NOFRAME ) hRgn = (HRGN)1; else { GETCLIENTRECTW( wndPtr, r2 ); hRgn = CreateRectRgnIndirect( &r2 ); } } } /* At this point hRgn is either an update region in window coordinates or 1 or 0 */ RDW_UpdateRgns( wndPtr, hRgn, flags, TRUE ); /* Erase/update windows, from now on hRgn is a scratch region */ hRgn = RDW_Paint( wndPtr, (hRgn == (HRGN)1) ? 0 : hRgn, flags, 0 ); END: if( hRgn > (HRGN)1 && (hRgn != hrgnUpdate) ) DeleteObject(hRgn ); WIN_ReleaseWndPtr(wndPtr); return TRUE; } /*********************************************************************** * UpdateWindow (USER32.@) */ BOOL WINAPI UpdateWindow( HWND hwnd ) { return RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN ); } /*********************************************************************** * InvalidateRgn (USER32.@) */ BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase ) { return RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) ); } /*********************************************************************** * InvalidateRect (USER32.@) */ BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase ) { return RedrawWindow( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) ); } /*********************************************************************** * ValidateRgn (USER32.@) */ BOOL WINAPI ValidateRgn( HWND hwnd, HRGN hrgn ) { return RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN ); } /*********************************************************************** * ValidateRect (USER32.@) */ BOOL WINAPI ValidateRect( HWND hwnd, const RECT *rect ) { return RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN ); } /*********************************************************************** * SelectPalette (Not a Windows API) */ HPALETTE WINAPI SelectPalette( HDC hDC, HPALETTE hPal, BOOL bForceBackground ) { WORD wBkgPalette = 1; if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE))) { HWND hwnd = WindowFromDC( hDC ); if (hwnd) { HWND hForeground = GetForegroundWindow(); /* set primary palette if it's related to current active */ if (hForeground == hwnd || IsChild(hForeground,hwnd)) wBkgPalette = 0; } } return pfnGDISelectPalette( hDC, hPal, wBkgPalette); } /*********************************************************************** * UserRealizePalette (USER32.@) */ UINT WINAPI UserRealizePalette( HDC hDC ) { UINT realized = pfnGDIRealizePalette( hDC ); /* do not send anything if no colors were changed */ if (realized && IsDCCurrentPalette16( HDC_16(hDC) )) { /* send palette change notification */ HWND hWnd = WindowFromDC( hDC ); if (hWnd) SendMessageTimeoutW( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0, SMTO_ABORTIFHUNG, 2000, NULL ); } return realized; }