| /* |
| * Window painting functions |
| * |
| * Copyright 1993, 1994, 1995 Alexandre Julliard |
| */ |
| |
| #include <stdio.h> |
| #include <X11/Xlib.h> |
| |
| #include "win.h" |
| #include "message.h" |
| #include "gdi.h" |
| #include "stddebug.h" |
| /* #define DEBUG_WIN */ |
| #include "debug.h" |
| |
| /* Last CTLCOLOR id */ |
| #define CTLCOLOR_MAX CTLCOLOR_STATIC |
| |
| |
| /*********************************************************************** |
| * BeginPaint (USER.39) |
| */ |
| HDC BeginPaint( HWND hwnd, LPPAINTSTRUCT lps ) |
| { |
| HRGN hrgnUpdate; |
| WND * wndPtr = WIN_FindWndPtr( hwnd ); |
| if (!wndPtr) return 0; |
| |
| hrgnUpdate = wndPtr->hrgnUpdate; /* Save update region */ |
| if (!hrgnUpdate) /* Create an empty region */ |
| if (!(hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 ))) return 0; |
| |
| if (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) |
| MSG_DecPaintCount( wndPtr->hmemTaskQ ); |
| |
| wndPtr->hrgnUpdate = 0; |
| wndPtr->flags &= ~(WIN_NEEDS_BEGINPAINT | WIN_INTERNAL_PAINT); |
| |
| if (wndPtr->flags & WIN_NEEDS_NCPAINT) |
| { |
| wndPtr->flags &= ~WIN_NEEDS_NCPAINT; |
| SendMessage( hwnd, WM_NCPAINT, 0, 0 ); |
| } |
| |
| lps->hdc = GetDCEx( hwnd, hrgnUpdate, DCX_INTERSECTRGN | DCX_USESTYLE ); |
| DeleteObject( hrgnUpdate ); |
| if (!lps->hdc) |
| { |
| fprintf( stderr, "GetDCEx() failed in BeginPaint(), hwnd=%x\n", hwnd ); |
| return 0; |
| } |
| |
| GetRgnBox( InquireVisRgn(lps->hdc), &lps->rcPaint ); |
| DPtoLP( lps->hdc, (LPPOINT)&lps->rcPaint, 2 ); |
| |
| if (wndPtr->flags & WIN_NEEDS_ERASEBKGND) |
| { |
| wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND; |
| lps->fErase = !SendMessage( hwnd, WM_ERASEBKGND, lps->hdc, 0 ); |
| } |
| else lps->fErase = TRUE; |
| |
| return lps->hdc; |
| } |
| |
| |
| /*********************************************************************** |
| * EndPaint (USER.40) |
| */ |
| void EndPaint( HWND hwnd, LPPAINTSTRUCT lps ) |
| { |
| ReleaseDC( hwnd, lps->hdc ); |
| } |
| |
| |
| /*********************************************************************** |
| * FillWindow (USER.324) |
| */ |
| void FillWindow( HWND hwndParent, HWND hwnd, HDC hdc, HBRUSH hbrush ) |
| { |
| RECT rect; |
| GetClientRect( hwnd, &rect ); |
| DPtoLP( hdc, (LPPOINT)&rect, 2 ); |
| PaintRect( hwndParent, hwnd, hdc, hbrush, &rect ); |
| } |
| |
| |
| /*********************************************************************** |
| * PaintRect (USER.325) |
| */ |
| void PaintRect(HWND hwndParent, HWND hwnd, HDC hdc, HBRUSH hbrush, LPRECT rect) |
| { |
| /* Send WM_CTLCOLOR message if needed */ |
| |
| if (hbrush <= CTLCOLOR_MAX) |
| { |
| if (!hwndParent) return; |
| hbrush = (HBRUSH)SendMessage( hwndParent, WM_CTLCOLOR, |
| hdc, MAKELONG( hwnd, hbrush ) ); |
| } |
| if (hbrush) FillRect( hdc, rect, hbrush ); |
| } |
| |
| |
| /*********************************************************************** |
| * GetControlBrush (USER.326) |
| */ |
| HBRUSH GetControlBrush( HWND hwnd, HDC hdc, WORD control ) |
| { |
| return (HBRUSH)SendMessage( GetParent(hwnd), WM_CTLCOLOR, |
| hdc, MAKELONG( hwnd, control ) ); |
| } |
| |
| |
| /*********************************************************************** |
| * RedrawWindow (USER.290) |
| */ |
| BOOL RedrawWindow( HWND hwnd, LPRECT rectUpdate, HRGN hrgnUpdate, UINT flags ) |
| { |
| HRGN tmpRgn, hrgn; |
| RECT rectClient; |
| WND * wndPtr; |
| |
| if (!hwnd) hwnd = GetDesktopWindow(); |
| if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE; |
| if (!(wndPtr->dwStyle & WS_VISIBLE) || (wndPtr->flags & WIN_NO_REDRAW)) |
| return TRUE; /* No redraw needed */ |
| |
| if (rectUpdate) |
| { |
| dprintf_win( stddeb, "RedrawWindow: %x %d,%d-%d,%d %x flags=%04x\n", |
| hwnd, rectUpdate->left, rectUpdate->top, |
| rectUpdate->right, rectUpdate->bottom, hrgnUpdate, flags); |
| } |
| else |
| { |
| dprintf_win( stddeb, "RedrawWindow: %x NULL %x flags=%04x\n", |
| hwnd, hrgnUpdate, flags); |
| } |
| GetClientRect( hwnd, &rectClient ); |
| |
| if (flags & RDW_INVALIDATE) /* Invalidate */ |
| { |
| if (wndPtr->hrgnUpdate) /* Is there already an update region? */ |
| { |
| tmpRgn = CreateRectRgn( 0, 0, 0, 0 ); |
| if ((hrgn = hrgnUpdate) == 0) |
| hrgn = CreateRectRgnIndirect( rectUpdate ? rectUpdate : |
| &rectClient ); |
| CombineRgn( tmpRgn, wndPtr->hrgnUpdate, hrgn, RGN_OR ); |
| DeleteObject( wndPtr->hrgnUpdate ); |
| wndPtr->hrgnUpdate = tmpRgn; |
| if (!hrgnUpdate) DeleteObject( hrgn ); |
| } |
| else /* No update region yet */ |
| { |
| if (!(wndPtr->flags & WIN_INTERNAL_PAINT)) |
| MSG_IncPaintCount( wndPtr->hmemTaskQ ); |
| if (hrgnUpdate) |
| { |
| wndPtr->hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 ); |
| CombineRgn( wndPtr->hrgnUpdate, hrgnUpdate, 0, RGN_COPY ); |
| } |
| else wndPtr->hrgnUpdate = CreateRectRgnIndirect( rectUpdate ? |
| rectUpdate : &rectClient ); |
| } |
| if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT; |
| if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND; |
| flags |= RDW_FRAME; /* Force invalidating the frame of children */ |
| } |
| else if (flags & RDW_VALIDATE) /* Validate */ |
| { |
| /* We need an update region in order to validate anything */ |
| if (wndPtr->hrgnUpdate) |
| { |
| if (!hrgnUpdate && !rectUpdate) |
| { |
| /* Special case: validate everything */ |
| DeleteObject( wndPtr->hrgnUpdate ); |
| wndPtr->hrgnUpdate = 0; |
| } |
| else |
| { |
| tmpRgn = CreateRectRgn( 0, 0, 0, 0 ); |
| if ((hrgn = hrgnUpdate) == 0) |
| hrgn = CreateRectRgnIndirect( rectUpdate ); |
| if (CombineRgn( tmpRgn, wndPtr->hrgnUpdate, |
| hrgn, RGN_DIFF ) == NULLREGION) |
| { |
| DeleteObject( tmpRgn ); |
| tmpRgn = 0; |
| } |
| DeleteObject( wndPtr->hrgnUpdate ); |
| wndPtr->hrgnUpdate = tmpRgn; |
| if (!hrgnUpdate) DeleteObject( hrgn ); |
| } |
| if (!wndPtr->hrgnUpdate) /* No more update region */ |
| if (!(wndPtr->flags & WIN_INTERNAL_PAINT)) |
| MSG_DecPaintCount( wndPtr->hmemTaskQ ); |
| } |
| if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT; |
| if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND; |
| } |
| |
| /* Set/clear internal paint flag */ |
| |
| if (flags & RDW_INTERNALPAINT) |
| { |
| if (!wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT)) |
| MSG_IncPaintCount( wndPtr->hmemTaskQ ); |
| wndPtr->flags |= WIN_INTERNAL_PAINT; |
| } |
| else if (flags & RDW_NOINTERNALPAINT) |
| { |
| if (!wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT)) |
| MSG_DecPaintCount( wndPtr->hmemTaskQ ); |
| wndPtr->flags &= ~WIN_INTERNAL_PAINT; |
| } |
| |
| /* Erase/update window */ |
| |
| if (flags & RDW_UPDATENOW) SendMessage( hwnd, WM_PAINT, 0, 0 ); |
| else if (flags & RDW_ERASENOW) |
| { |
| if (wndPtr->flags & WIN_NEEDS_NCPAINT) |
| { |
| wndPtr->flags &= ~WIN_NEEDS_NCPAINT; |
| SendMessage( hwnd, WM_NCPAINT, 0, 0 ); |
| } |
| if (wndPtr->flags & WIN_NEEDS_ERASEBKGND) |
| { |
| HDC hdc = GetDCEx( hwnd, wndPtr->hrgnUpdate, |
| DCX_INTERSECTRGN | DCX_USESTYLE ); |
| if (hdc) |
| { |
| /* Don't send WM_ERASEBKGND to icons */ |
| /* (WM_ICONERASEBKGND is sent during processing of WM_NCPAINT) */ |
| if (!(wndPtr->dwStyle & WS_MINIMIZE) |
| || !WIN_CLASS_INFO(wndPtr).hIcon) |
| { |
| if (SendMessage( hwnd, WM_ERASEBKGND, hdc, 0 )) |
| wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND; |
| } |
| ReleaseDC( hwnd, hdc ); |
| } |
| } |
| } |
| |
| /* Recursively process children */ |
| |
| if (!(flags & RDW_NOCHILDREN) && |
| ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN))) |
| { |
| if (hrgnUpdate) |
| { |
| HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 ); |
| if (!hrgn) return TRUE; |
| for (hwnd = wndPtr->hwndChild; (hwnd); hwnd = wndPtr->hwndNext) |
| { |
| if (!(wndPtr = WIN_FindWndPtr( hwnd ))) break; |
| CombineRgn( hrgn, hrgnUpdate, 0, RGN_COPY ); |
| OffsetRgn( hrgn, -wndPtr->rectClient.left, |
| -wndPtr->rectClient.top ); |
| RedrawWindow( hwnd, NULL, hrgn, flags ); |
| } |
| DeleteObject( hrgn ); |
| } |
| else |
| { |
| RECT rect; |
| for (hwnd = wndPtr->hwndChild; (hwnd); hwnd = wndPtr->hwndNext) |
| { |
| if (!(wndPtr = WIN_FindWndPtr( hwnd ))) break; |
| if (rectUpdate) |
| { |
| rect = *rectUpdate; |
| OffsetRect( &rect, -wndPtr->rectClient.left, |
| -wndPtr->rectClient.top ); |
| RedrawWindow( hwnd, &rect, 0, flags ); |
| } |
| else RedrawWindow( hwnd, NULL, 0, flags ); |
| } |
| } |
| } |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * UpdateWindow (USER.124) |
| */ |
| void UpdateWindow( HWND hwnd ) |
| { |
| RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN ); |
| } |
| |
| |
| /*********************************************************************** |
| * InvalidateRgn (USER.126) |
| */ |
| void InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase ) |
| { |
| RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) ); |
| } |
| |
| |
| /*********************************************************************** |
| * InvalidateRect (USER.125) |
| */ |
| void InvalidateRect( HWND hwnd, LPRECT rect, BOOL erase ) |
| { |
| RedrawWindow( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) ); |
| } |
| |
| |
| /*********************************************************************** |
| * ValidateRgn (USER.128) |
| */ |
| void ValidateRgn( HWND hwnd, HRGN hrgn ) |
| { |
| RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN ); |
| } |
| |
| |
| /*********************************************************************** |
| * ValidateRect (USER.127) |
| */ |
| void ValidateRect( HWND hwnd, LPRECT rect ) |
| { |
| RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN ); |
| } |
| |
| |
| /*********************************************************************** |
| * GetUpdateRect (USER.190) |
| */ |
| BOOL GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase ) |
| { |
| WND * wndPtr = WIN_FindWndPtr( hwnd ); |
| if (!wndPtr) return FALSE; |
| |
| if (rect) |
| { |
| if (wndPtr->hrgnUpdate) |
| { |
| HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 ); |
| if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR) return FALSE; |
| GetRgnBox( hrgn, rect ); |
| DeleteObject( hrgn ); |
| } |
| else SetRectEmpty( rect ); |
| } |
| return (wndPtr->hrgnUpdate != 0); |
| } |
| |
| |
| /*********************************************************************** |
| * GetUpdateRgn (USER.237) |
| */ |
| int GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase ) |
| { |
| int retval; |
| WND * wndPtr = WIN_FindWndPtr( hwnd ); |
| if (!wndPtr) return ERROR; |
| |
| if (!wndPtr->hrgnUpdate) |
| { |
| SetRectRgn( hrgn, 0, 0, 0, 0 ); |
| return NULLREGION; |
| } |
| retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY ); |
| if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN ); |
| return retval; |
| } |
| |
| |
| /*********************************************************************** |
| * ExcludeUpdateRgn (USER.238) |
| */ |
| int ExcludeUpdateRgn( HDC hdc, HWND hwnd ) |
| { |
| int retval = ERROR; |
| HRGN hrgn; |
| WND * wndPtr; |
| |
| if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR; |
| if ((hrgn = CreateRectRgn( 0, 0, 0, 0 )) != 0) |
| { |
| retval = CombineRgn( hrgn, InquireVisRgn(hdc), |
| wndPtr->hrgnUpdate, RGN_DIFF ); |
| if (retval) SelectVisRgn( hdc, hrgn ); |
| DeleteObject( hrgn ); |
| } |
| return retval; |
| } |
| |
| |
