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Sweden-Number/windows/painting.c

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/*
* Window painting functions
*
* Copyright 1993, 1994, 1995 Alexandre Julliard
* 1999 Alex Korobka
*/
#include "region.h"
#include "win.h"
#include "queue.h"
#include "dce.h"
#include "heap.h"
#include "debugtools.h"
#include "wine/winuser16.h"
DECLARE_DEBUG_CHANNEL(nonclient)
DECLARE_DEBUG_CHANNEL(win)
/* 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
/* Last CTLCOLOR id */
#define CTLCOLOR_MAX CTLCOLOR_STATIC
/***********************************************************************
* 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(
WND* wndPtr,
UINT uncFlags)
{
WND* parentWnd = NULL;
/*
* 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.
*/
parentWnd = WIN_LockWndPtr(wndPtr->parent);
while (parentWnd!=NULL)
{
if ( ((parentWnd->dwStyle & WS_CLIPCHILDREN) == 0) &&
(parentWnd->hrgnUpdate != 0) )
{
WIN_ReleaseWndPtr(parentWnd);
return TRUE;
}
WIN_UpdateWndPtr(&parentWnd, parentWnd->parent);
}
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.
*/
HRGN WIN_UpdateNCRgn(WND* wnd, HRGN hRgn, UINT uncFlags )
{
RECT r;
HRGN hClip = 0;
HRGN hrgnRet = 0;
TRACE_(nonclient)("hwnd %04x [%04x] hrgn %04x, 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 == WIN_GetDesktop())
{
wnd->flags &= ~WIN_NEEDS_NCPAINT;
if( wnd->hrgnUpdate > 1 )
hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
else
{
hrgnRet = wnd->hrgnUpdate;
}
WIN_ReleaseDesktop();
return hrgnRet;
}
WIN_ReleaseDesktop();
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, uncFlags) )
{
RECT r2, r3;
wnd->flags &= ~WIN_NEEDS_NCPAINT;
GETCLIENTRECTW( wnd, r );
TRACE_(nonclient)( "\tclient box (%i,%i-%i,%i), hrgnUpdate %04x\n",
r.left, r.top, r.right, r.bottom, wnd->hrgnUpdate );
if( wnd->hrgnUpdate > 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 = REGION_CropRgn( hRgn, hClip, &r, NULL );
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))
QUEUE_DecPaintCount( wnd->hmemTaskQ );
wnd->flags &= ~WIN_NEEDS_ERASEBKGND;
}
}
if(!hClip && wnd->hrgnUpdate ) goto copyrgn;
}
else
if( wnd->hrgnUpdate == 1 )/* entire window */
{
if( uncFlags & UNC_UPDATE ) wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
if( uncFlags & UNC_REGION ) hrgnRet = 1;
uncFlags |= UNC_ENTIRE;
}
}
else /* no WM_NCPAINT unless forced */
{
if( wnd->hrgnUpdate > 1 )
{
copyrgn:
if( uncFlags & UNC_REGION )
hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
}
else
if( wnd->hrgnUpdate == 1 && (uncFlags & UNC_UPDATE) )
{
GETCLIENTRECTW( wnd, r );
wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
if( uncFlags & UNC_REGION ) hrgnRet = 1;
}
}
if(!hClip && (uncFlags & UNC_ENTIRE) )
{
/* still don't do anything if there is no nonclient area */
hClip = (memcmp( &wnd->rectWindow, &wnd->rectClient, sizeof(RECT) ) != 0);
}
if( hClip ) /* NOTE: WM_NCPAINT allows wParam to be 1 */
{
if ( hClip == hrgnRet && hrgnRet > 1 ) {
hClip = CreateRectRgn( 0, 0, 0, 0 );
CombineRgn( hClip, hrgnRet, 0, RGN_COPY );
}
SendMessageA( wnd->hwndSelf, WM_NCPAINT, hClip, 0L );
if( (hClip > 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 %04x (hClip = %04x, hrgnUpdate = %04x)\n", hrgnRet, hClip, wnd->hrgnUpdate );
return hrgnRet;
}
/***********************************************************************
* BeginPaint16 (USER.39)
*/
HDC16 WINAPI BeginPaint16( HWND16 hwnd, LPPAINTSTRUCT16 lps )
{
BOOL bIcon;
HRGN hrgnUpdate;
WND *wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
bIcon = (wndPtr->dwStyle & WS_MINIMIZE && GetClassWord(wndPtr->hwndSelf, GCW_HICON));
wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
/* send WM_NCPAINT and make sure hrgnUpdate is a valid rgn handle */
WIN_UpdateNCRgn( wndPtr, 0, UNC_UPDATE | UNC_IN_BEGINPAINT);
/*
* Make sure the window is still a window. All window locks are suspended
* when the WM_NCPAINT is sent.
*/
if (!IsWindow(wndPtr->hwndSelf))
{
WIN_ReleaseWndPtr(wndPtr);
return 0;
}
if( ((hrgnUpdate = wndPtr->hrgnUpdate) != 0) || (wndPtr->flags & WIN_INTERNAL_PAINT))
QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
wndPtr->hrgnUpdate = 0;
wndPtr->flags &= ~WIN_INTERNAL_PAINT;
HideCaret( hwnd );
TRACE_(win)("hrgnUpdate = %04x, \n", hrgnUpdate);
if (GetClassWord16(wndPtr->hwndSelf, GCW_STYLE) & CS_PARENTDC)
{
/* Don't clip the output to the update region for CS_PARENTDC window */
if( hrgnUpdate )
DeleteObject(hrgnUpdate);
lps->hdc = GetDCEx16( hwnd, 0, DCX_WINDOWPAINT | DCX_USESTYLE |
(bIcon ? DCX_WINDOW : 0) );
}
else
{
if( hrgnUpdate ) /* convert to client coordinates */
OffsetRgn( hrgnUpdate, wndPtr->rectWindow.left - wndPtr->rectClient.left,
wndPtr->rectWindow.top - wndPtr->rectClient.top );
lps->hdc = GetDCEx16(hwnd, hrgnUpdate, DCX_INTERSECTRGN |
DCX_WINDOWPAINT | DCX_USESTYLE | (bIcon ? DCX_WINDOW : 0) );
/* ReleaseDC() in EndPaint() will delete the region */
}
TRACE_(win)("hdc = %04x\n", lps->hdc);
if (!lps->hdc)
{
WARN_(win)("GetDCEx() failed in BeginPaint(), hwnd=%04x\n", hwnd);
WIN_ReleaseWndPtr(wndPtr);
return 0;
}
GetClipBox16( lps->hdc, &lps->rcPaint );
TRACE_(win)("box = (%i,%i - %i,%i)\n", lps->rcPaint.left, lps->rcPaint.top,
lps->rcPaint.right, lps->rcPaint.bottom );
if (wndPtr->flags & WIN_NEEDS_ERASEBKGND)
{
wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
lps->fErase = !SendMessage16(hwnd, (bIcon) ? WM_ICONERASEBKGND
: WM_ERASEBKGND,
(WPARAM16)lps->hdc, 0 );
}
else lps->fErase = TRUE;
WIN_ReleaseWndPtr(wndPtr);
return lps->hdc;
}
/***********************************************************************
* BeginPaint32 (USER32.10)
*/
HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
{
PAINTSTRUCT16 ps;
BeginPaint16( hwnd, &ps );
lps->hdc = (HDC)ps.hdc;
lps->fErase = ps.fErase;
lps->rcPaint.top = ps.rcPaint.top;
lps->rcPaint.left = ps.rcPaint.left;
lps->rcPaint.right = ps.rcPaint.right;
lps->rcPaint.bottom = ps.rcPaint.bottom;
lps->fRestore = ps.fRestore;
lps->fIncUpdate = ps.fIncUpdate;
return lps->hdc;
}
/***********************************************************************
* EndPaint16 (USER.40)
*/
BOOL16 WINAPI EndPaint16( HWND16 hwnd, const PAINTSTRUCT16* lps )
{
ReleaseDC16( hwnd, lps->hdc );
ShowCaret( hwnd );
return TRUE;
}
/***********************************************************************
* EndPaint32 (USER32.176)
*/
BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
{
ReleaseDC( hwnd, lps->hdc );
ShowCaret( hwnd );
return TRUE;
}
/***********************************************************************
* FillWindow (USER.324)
*/
void WINAPI FillWindow16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc, HBRUSH16 hbrush )
{
RECT16 rect;
GetClientRect16( hwnd, &rect );
DPtoLP16( hdc, (LPPOINT16)&rect, 2 );
PaintRect16( hwndParent, hwnd, hdc, hbrush, &rect );
}
/***********************************************************************
* PAINT_GetControlBrush
*/
static HBRUSH16 PAINT_GetControlBrush( HWND hParent, HWND hWnd, HDC16 hDC, UINT16 ctlType )
{
HBRUSH16 bkgBrush = (HBRUSH16)SendMessageA( hParent, WM_CTLCOLORMSGBOX + ctlType,
(WPARAM)hDC, (LPARAM)hWnd );
if( !IsGDIObject16(bkgBrush) )
bkgBrush = DEFWND_ControlColor( hDC, ctlType );
return bkgBrush;
}
/***********************************************************************
* PaintRect (USER.325)
*/
void WINAPI PaintRect16( HWND16 hwndParent, HWND16 hwnd, HDC16 hdc,
HBRUSH16 hbrush, const RECT16 *rect)
{
if( hbrush <= CTLCOLOR_MAX )
{
if( hwndParent )
hbrush = PAINT_GetControlBrush( hwndParent, hwnd, hdc, (UINT16)hbrush );
else
return;
}
if( hbrush )
FillRect16( hdc, rect, hbrush );
}
/***********************************************************************
* GetControlBrush (USER.326)
*/
HBRUSH16 WINAPI GetControlBrush16( HWND16 hwnd, HDC16 hdc, UINT16 ctlType )
{
WND* wndPtr = WIN_FindWndPtr( hwnd );
HBRUSH16 retvalue;
if((ctlType <= CTLCOLOR_MAX) && wndPtr )
{
WND* parent;
if( wndPtr->dwStyle & WS_POPUP ) parent = WIN_LockWndPtr(wndPtr->owner);
else parent = WIN_LockWndPtr(wndPtr->parent);
if( !parent ) parent = wndPtr;
retvalue = (HBRUSH16)PAINT_GetControlBrush( parent->hwndSelf, hwnd, hdc, ctlType );
WIN_ReleaseWndPtr(parent);
goto END;
}
retvalue = (HBRUSH16)0;
END:
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/***********************************************************************
* RDW_ValidateParent [RDW_UpdateRgns() helper]
*
* Validate the portions of parent that are covered by a validated child
* wndPtr = child
*/
void RDW_ValidateParent(WND *wndChild)
{
WND *wndParent = WIN_LockWndPtr(wndChild->parent);
WND *wndDesktop = WIN_GetDesktop();
if ((wndParent) && (wndParent != wndDesktop) && !(wndParent->dwStyle & WS_CLIPCHILDREN))
{
HRGN hrg;
if (wndChild->hrgnUpdate == 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;
if (wndParent->hrgnUpdate != 0)
{
POINT ptOffset;
RECT rect, rectParent;
if( wndParent->hrgnUpdate == 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 );
CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF );
OffsetRgn( hrg, -ptOffset.x, -ptOffset.y );
}
if (hrg != wndChild->hrgnUpdate) DeleteObject( hrg );
}
WIN_ReleaseWndPtr(wndParent);
WIN_ReleaseDesktop();
}
/***********************************************************************
* 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 = ( wndPtr->child && !(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_(win)("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", wndPtr->hwndSelf, wndPtr->hrgnUpdate, hRgn, flags );
if( flags & RDW_INVALIDATE )
{
if( hRgn > 1 )
{
switch( wndPtr->hrgnUpdate )
{
default:
CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_OR );
/* fall through */
case 0:
wndPtr->hrgnUpdate = REGION_CropRgn( wndPtr->hrgnUpdate,
wndPtr->hrgnUpdate ? wndPtr->hrgnUpdate : hRgn,
&r, NULL );
if( !bHadOne )
{
GetRgnBox( wndPtr->hrgnUpdate, &r );
if( IsRectEmpty( &r ) )
{
DeleteObject( wndPtr->hrgnUpdate );
wndPtr->hrgnUpdate = 0;
goto OUT;
}
}
break;
case 1: /* already an entire window */
break;
}
}
else if( hRgn == 1 )
{
if( wndPtr->hrgnUpdate > 1 )
DeleteObject( wndPtr->hrgnUpdate );
wndPtr->hrgnUpdate = 1;
}
else
hRgn = wndPtr->hrgnUpdate; /* this is a trick that depends on code in PAINT_RedrawWindow() */
if( !bHadOne && !(wndPtr->flags & WIN_INTERNAL_PAINT) )
QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
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 > 1 )
{
if( wndPtr->hrgnUpdate == 1 )
wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r );
if( CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_DIFF )
== NULLREGION )
goto EMPTY;
}
else /* validate everything */
{
if( wndPtr->hrgnUpdate > 1 )
{
EMPTY:
DeleteObject( wndPtr->hrgnUpdate );
}
wndPtr->hrgnUpdate = 0;
}
if( !wndPtr->hrgnUpdate )
{
wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
if( !(wndPtr->flags & WIN_INTERNAL_PAINT) )
QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
}
}
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) )
{
if( hRgn > 1 && bChildren )
{
WND* wnd = wndPtr->child;
POINT ptTotal, prevOrigin = {0,0};
POINT ptClient;
ptClient.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
ptClient.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
for( ptTotal.x = ptTotal.y = 0; wnd; wnd = wnd->next )
{
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;
}
}
}
OffsetRgn( hRgn, ptTotal.x, ptTotal.y );
bChildren = 0;
}
}
/* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */
if( bChildren )
{
WND* wnd;
for( wnd = wndPtr->child; wnd; wnd = wnd->next )
if( wnd->dwStyle & WS_VISIBLE )
RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
}
OUT:
/* Set/clear internal paint flag */
if (flags & RDW_INTERNALPAINT)
{
if ( !wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT))
QUEUE_IncPaintCount( wndPtr->hmemTaskQ );
wndPtr->flags |= WIN_INTERNAL_PAINT;
}
else if (flags & RDW_NOINTERNALPAINT)
{
if ( !wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT))
QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
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) && GetClassWord(wndPtr->hwndSelf, GCW_HICON));
/* Erase/update the window itself ... */
TRACE_(win)("\thwnd %04x [%04x] -> hrgn [%04x], 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, 0) )
ex |= RDW_EX_DELAY_NCPAINT;
if (flags & RDW_UPDATENOW)
{
if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
SendMessage16( hWnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
}
else if ((flags & RDW_ERASENOW) || (ex & RDW_EX_TOPFRAME))
{
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_TOPFRAME) ? UNC_ENTIRE : 0) |
((ex & RDW_EX_DELAY_NCPAINT) ? UNC_DELAY_NCPAINT : 0) );
if( hrgnRet )
{
if( hrgnRet > 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 (SendMessage16( hWnd, (bIcon) ? WM_ICONERASEBKGND
: WM_ERASEBKGND, (WPARAM16)hDC, 0 ))
wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
ReleaseDC( hWnd, hDC );
}
}
}
}
if( !IsWindow(hWnd) ) return hrgn;
ex &= ~RDW_EX_TOPFRAME;
/* ... and its child windows */
if( wndPtr->child && !(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE)
&& ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) )
{
WND** list, **ppWnd;
if( (list = WIN_BuildWinArray( wndPtr, 0, NULL )) )
{
wndPtr = NULL;
for (ppWnd = list; *ppWnd; ppWnd++)
{
WIN_UpdateWndPtr(&wndPtr,*ppWnd);
if (!IsWindow(wndPtr->hwndSelf)) continue;
if ( (wndPtr->dwStyle & WS_VISIBLE) &&
(wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) )
hrgn = RDW_Paint( wndPtr, hrgn, flags, ex );
}
WIN_ReleaseWndPtr(wndPtr);
WIN_ReleaseWinArray(list);
}
}
return hrgn;
}
/***********************************************************************
* PAINT_RedrawWindow
*
*/
BOOL PAINT_RedrawWindow( HWND hwnd, const RECT *rectUpdate,
HRGN hrgnUpdate, UINT flags, UINT ex )
{
HRGN hRgn = 0;
RECT r, r2;
POINT pt;
WND* wndPtr;
if (!hwnd) hwnd = GetDesktopWindow();
if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
/* check if the window or its parents are visible/not minimized */
if (!WIN_IsWindowDrawable( wndPtr, !(flags & RDW_FRAME) ) )
{
WIN_ReleaseWndPtr(wndPtr);
return TRUE;
}
if (TRACE_ON(win))
{
if( hrgnUpdate )
{
GetRgnBox( hrgnUpdate, &r );
TRACE_(win)( "%04x (%04x) NULL %04x box (%i,%i-%i,%i) flags=%04x, exflags=%04x\n",
hwnd, wndPtr->hrgnUpdate, hrgnUpdate, r.left, r.top, r.right, r.bottom, flags, ex);
}
else
{
if( rectUpdate )
r = *rectUpdate;
else
SetRectEmpty( &r );
TRACE_(win)( "%04x (%04x) %s %d,%d-%d,%d %04x flags=%04x, exflags=%04x\n",
hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left,
r.top, r.right, r.bottom, hrgnUpdate, flags, ex );
}
}
/* prepare an update region in window coordinates */
if( flags & RDW_FRAME )
r = wndPtr->rectWindow;
else
r = wndPtr->rectClient;
if( ex & RDW_EX_XYWINDOW )
{
pt.x = pt.y = 0;
OffsetRect( &r, -wndPtr->rectWindow.left, -wndPtr->rectWindow.top );
}
else
{
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 = REGION_CropRgn( 0, hrgnUpdate, NULL, &pt );
else
wndPtr->hrgnUpdate = REGION_CropRgn( 0, hrgnUpdate, &r, &pt );
}
else if( rectUpdate )
{
if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
OffsetRect( &r2, pt.x, pt.y );
rect2i:
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 )
DeleteObject( wndPtr->hrgnUpdate );
wndPtr->hrgnUpdate = 1;
}
else
{
GETCLIENTRECTW( wndPtr, r2 );
goto rect2i;
}
}
}
else if (flags & RDW_VALIDATE) /* ------------------------- Validate */
{
/* In this we cannot leave with zero hRgn */
if( hrgnUpdate )
{
hRgn = REGION_CropRgn( hRgn, hrgnUpdate, &r, &pt );
GetRgnBox( hRgn, &r2 );
if( IsRectEmpty( &r2 ) ) goto END;
}
else if( rectUpdate )
{
if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
OffsetRect( &r2, pt.x, pt.y );
rect2v:
hRgn = CreateRectRgnIndirect( &r2 );
}
else /* entire window or client depending on RDW_FRAME */
{
if( flags & RDW_FRAME )
hRgn = 1;
else
{
GETCLIENTRECTW( wndPtr, r2 );
goto rect2v;
}
}
}
/* 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 == 1) ? 0 : hRgn, flags, ex );
END:
if( hRgn > 1 && (hRgn != hrgnUpdate) )
DeleteObject(hRgn );
WIN_ReleaseWndPtr(wndPtr);
return TRUE;
}
/***********************************************************************
* RedrawWindow32 (USER32.426)
*/
BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
HRGN hrgnUpdate, UINT flags )
{
return PAINT_RedrawWindow( hwnd, rectUpdate, hrgnUpdate, flags, 0 );
}
/***********************************************************************
* RedrawWindow16 (USER.290)
*/
BOOL16 WINAPI RedrawWindow16( HWND16 hwnd, const RECT16 *rectUpdate,
HRGN16 hrgnUpdate, UINT16 flags )
{
if (rectUpdate)
{
RECT r;
CONV_RECT16TO32( rectUpdate, &r );
return (BOOL16)RedrawWindow( (HWND)hwnd, &r, hrgnUpdate, flags );
}
return (BOOL16)PAINT_RedrawWindow( (HWND)hwnd, NULL,
(HRGN)hrgnUpdate, flags, 0 );
}
/***********************************************************************
* UpdateWindow16 (USER.124)
*/
void WINAPI UpdateWindow16( HWND16 hwnd )
{
PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
}
/***********************************************************************
* UpdateWindow32 (USER32.567)
*/
void WINAPI UpdateWindow( HWND hwnd )
{
PAINT_RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_NOCHILDREN, 0 );
}
/***********************************************************************
* InvalidateRgn16 (USER.126)
*/
void WINAPI InvalidateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
{
PAINT_RedrawWindow((HWND)hwnd, NULL, (HRGN)hrgn,
RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
}
/***********************************************************************
* InvalidateRgn32 (USER32.329)
*/
BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
{
return PAINT_RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
}
/***********************************************************************
* InvalidateRect16 (USER.125)
*/
void WINAPI InvalidateRect16( HWND16 hwnd, const RECT16 *rect, BOOL16 erase )
{
RedrawWindow16( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
}
/***********************************************************************
* InvalidateRect32 (USER32.328)
*/
BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
{
return PAINT_RedrawWindow( hwnd, rect, 0,
RDW_INVALIDATE | (erase ? RDW_ERASE : 0), 0 );
}
/***********************************************************************
* ValidateRgn16 (USER.128)
*/
void WINAPI ValidateRgn16( HWND16 hwnd, HRGN16 hrgn )
{
PAINT_RedrawWindow( (HWND)hwnd, NULL, (HRGN)hrgn,
RDW_VALIDATE | RDW_NOCHILDREN, 0 );
}
/***********************************************************************
* ValidateRgn32 (USER32.572)
*/
void WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
{
PAINT_RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
}
/***********************************************************************
* ValidateRect16 (USER.127)
*/
void WINAPI ValidateRect16( HWND16 hwnd, const RECT16 *rect )
{
RedrawWindow16( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
}
/***********************************************************************
* ValidateRect32 (USER32.571)
*/
void WINAPI ValidateRect( HWND hwnd, const RECT *rect )
{
PAINT_RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN, 0 );
}
/***********************************************************************
* GetUpdateRect16 (USER.190)
*/
BOOL16 WINAPI GetUpdateRect16( HWND16 hwnd, LPRECT16 rect, BOOL16 erase )
{
RECT r;
BOOL16 ret;
if (!rect) return GetUpdateRect( hwnd, NULL, erase );
ret = GetUpdateRect( hwnd, &r, erase );
CONV_RECT32TO16( &r, rect );
return ret;
}
/***********************************************************************
* GetUpdateRect32 (USER32.297)
*/
BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
{
BOOL retvalue;
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return FALSE;
if (rect)
{
if (wndPtr->hrgnUpdate > 1)
{
HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR)
{
retvalue = FALSE;
goto END;
}
GetRgnBox( hrgn, rect );
DeleteObject( hrgn );
if (GetClassLongA(wndPtr->hwndSelf, GCL_STYLE) & CS_OWNDC)
{
if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
{
DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect, 2);
}
}
}
else
if( wndPtr->hrgnUpdate == 1 )
{
GetClientRect( hwnd, rect );
if (erase) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_ERASENOW | RDW_NOCHILDREN );
}
else
SetRectEmpty( rect );
}
retvalue = (wndPtr->hrgnUpdate >= 1);
END:
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/***********************************************************************
* GetUpdateRgn16 (USER.237)
*/
INT16 WINAPI GetUpdateRgn16( HWND16 hwnd, HRGN16 hrgn, BOOL16 erase )
{
return GetUpdateRgn( hwnd, hrgn, erase );
}
/***********************************************************************
* GetUpdateRgn (USER32.298)
*/
INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
{
INT retval;
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return ERROR;
if (wndPtr->hrgnUpdate == 0)
{
SetRectRgn( hrgn, 0, 0, 0, 0 );
retval = NULLREGION;
goto END;
}
else
if (wndPtr->hrgnUpdate == 1)
{
SetRectRgn( hrgn, 0, 0, wndPtr->rectClient.right - wndPtr->rectClient.left,
wndPtr->rectClient.bottom - wndPtr->rectClient.top );
retval = SIMPLEREGION;
}
else
{
retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
OffsetRgn( hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
wndPtr->rectWindow.top - wndPtr->rectClient.top );
}
if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
END:
WIN_ReleaseWndPtr(wndPtr);
return retval;
}
/***********************************************************************
* ExcludeUpdateRgn16 (USER.238)
*/
INT16 WINAPI ExcludeUpdateRgn16( HDC16 hdc, HWND16 hwnd )
{
return ExcludeUpdateRgn( hdc, hwnd );
}
/***********************************************************************
* ExcludeUpdateRgn32 (USER32.195)
*/
INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
{
RECT rect;
WND * wndPtr;
if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
if (wndPtr->hrgnUpdate)
{
INT ret;
HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
wndPtr->rectWindow.top - wndPtr->rectClient.top,
wndPtr->rectWindow.right - wndPtr->rectClient.left,
wndPtr->rectWindow.bottom - wndPtr->rectClient.top);
if( wndPtr->hrgnUpdate > 1 )
{
CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
OffsetRgn(hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
wndPtr->rectWindow.top - wndPtr->rectClient.top );
}
/* do ugly coordinate translations in dce.c */
ret = DCE_ExcludeRgn( hdc, wndPtr, hrgn );
DeleteObject( hrgn );
WIN_ReleaseWndPtr(wndPtr);
return ret;
}
WIN_ReleaseWndPtr(wndPtr);
return GetClipBox( hdc, &rect );
}
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