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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
*
* 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 <string.h>
#include "windef.h"
#include "wingdi.h"
#include "wine/winuser16.h"
#include "wine/unicode.h"
#include "wine/server.h"
#include "gdi.h"
#include "user.h"
#include "win.h"
#include "queue.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
/* Last COLOR id */
#define COLOR_MAX COLOR_GRADIENTINACTIVECAPTION
/* ### start build ### */
extern WORD CALLBACK PAINTING_CallTo16_word_wlwww(DRAWSTATEPROC16,WORD,LONG,WORD,WORD,WORD);
/* ### stop build ### */
struct draw_state_info
{
DRAWSTATEPROC16 proc;
LPARAM param;
};
/* callback for 16-bit DrawState functions */
static BOOL CALLBACK draw_state_callback( HDC hdc, LPARAM lparam, WPARAM wparam, int cx, int cy )
{
const struct draw_state_info *info = (struct draw_state_info *)lparam;
return PAINTING_CallTo16_word_wlwww( info->proc, hdc, info->param, wparam, cx, cy );
}
/***********************************************************************
* 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;
}
/***********************************************************************
* 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 %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->hwndSelf == GetDesktopWindow())
{
wnd->flags &= ~WIN_NEEDS_NCPAINT;
if( wnd->hrgnUpdate > 1 )
hrgnRet = REGION_CropRgn( hRgn, wnd->hrgnUpdate, NULL, NULL );
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 (%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))
add_paint_count( wnd->hwndSelf, -1 );
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;
}
/***********************************************************************
* 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 == 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 == 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 );
}
}
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 %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 end;
}
}
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) )
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 > 1 )
{
if( wndPtr->hrgnUpdate == 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 > 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 > 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 %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->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 > 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;
}
/***********************************************************************
* 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( "%04x (%04x) NULL %04x box (%i,%i-%i,%i) 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( "%04x (%04x) %s %d,%d-%d,%d %04x flags=%04x\n",
hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left,
r.top, r.right, r.bottom, hrgnUpdate, 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 = 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 );
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 = 1;
else wndPtr->hrgnUpdate = 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 = 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 );
hRgn = CreateRectRgnIndirect( &r2 );
}
else /* entire window or client depending on RDW_NOFRAME */
{
if( flags & RDW_NOFRAME )
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 == 1) ? 0 : hRgn, flags, 0 );
END:
if( hRgn > 1 && (hRgn != hrgnUpdate) )
DeleteObject(hRgn );
WIN_ReleaseWndPtr(wndPtr);
return TRUE;
}
/***********************************************************************
* UpdateWindow (USER32.@)
*/
void WINAPI UpdateWindow( HWND hwnd )
{
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.@)
*/
void WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
{
RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN );
}
/***********************************************************************
* ValidateRect (USER32.@)
*/
void WINAPI ValidateRect( HWND hwnd, const RECT *rect )
{
RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
}
/***********************************************************************
* GetUpdateRect (USER32.@)
*/
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;
}
/***********************************************************************
* GetUpdateRgn (USER32.@)
*/
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;
}
/***********************************************************************
* ExcludeUpdateRgn (USER32.@)
*/
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, hwnd, hrgn );
DeleteObject( hrgn );
WIN_ReleaseWndPtr(wndPtr);
return ret;
}
WIN_ReleaseWndPtr(wndPtr);
return GetClipBox( hdc, &rect );
}
/***********************************************************************
* FillRect (USER.81)
* NOTE
* The Win16 variant doesn't support special color brushes like
* the Win32 one, despite the fact that Win16, as well as Win32,
* supports special background brushes for a window class.
*/
INT16 WINAPI FillRect16( HDC16 hdc, const RECT16 *rect, HBRUSH16 hbrush )
{
HBRUSH prevBrush;
/* coordinates are logical so we cannot fast-check 'rect',
* it will be done later in the PatBlt().
*/
if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
PatBlt( hdc, rect->left, rect->top,
rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
SelectObject( hdc, prevBrush );
return 1;
}
/***********************************************************************
* FillRect (USER32.@)
*/
INT WINAPI FillRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
{
HBRUSH prevBrush;
if (hbrush <= (HBRUSH) (COLOR_MAX + 1)) {
hbrush = GetSysColorBrush( (INT) hbrush - 1 );
}
if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
PatBlt( hdc, rect->left, rect->top,
rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
SelectObject( hdc, prevBrush );
return 1;
}
/***********************************************************************
* InvertRect (USER.82)
*/
void WINAPI InvertRect16( HDC16 hdc, const RECT16 *rect )
{
PatBlt( hdc, rect->left, rect->top,
rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
}
/***********************************************************************
* InvertRect (USER32.@)
*/
BOOL WINAPI InvertRect( HDC hdc, const RECT *rect )
{
return PatBlt( hdc, rect->left, rect->top,
rect->right - rect->left, rect->bottom - rect->top,
DSTINVERT );
}
/***********************************************************************
* FrameRect (USER32.@)
*/
INT WINAPI FrameRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
{
HBRUSH prevBrush;
RECT r = *rect;
if ( (r.right <= r.left) || (r.bottom <= r.top) ) return 0;
if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
PatBlt( hdc, r.left, r.top, 1,
r.bottom - r.top, PATCOPY );
PatBlt( hdc, r.right - 1, r.top, 1,
r.bottom - r.top, PATCOPY );
PatBlt( hdc, r.left, r.top,
r.right - r.left, 1, PATCOPY );
PatBlt( hdc, r.left, r.bottom - 1,
r.right - r.left, 1, PATCOPY );
SelectObject( hdc, prevBrush );
return TRUE;
}
/***********************************************************************
* FrameRect (USER.83)
*/
INT16 WINAPI FrameRect16( HDC16 hdc, const RECT16 *rect16, HBRUSH16 hbrush )
{
RECT rect;
CONV_RECT16TO32( rect16, &rect );
return FrameRect( hdc, &rect, hbrush );
}
/***********************************************************************
* DrawFocusRect (USER.466)
*/
void WINAPI DrawFocusRect16( HDC16 hdc, const RECT16* rc )
{
RECT rect32;
CONV_RECT16TO32( rc, &rect32 );
DrawFocusRect( hdc, &rect32 );
}
/***********************************************************************
* DrawFocusRect (USER32.@)
*
* FIXME: PatBlt(PATINVERT) with background brush.
*/
BOOL WINAPI DrawFocusRect( HDC hdc, const RECT* rc )
{
HBRUSH hOldBrush;
HPEN hOldPen, hNewPen;
INT oldDrawMode, oldBkMode;
hOldBrush = SelectObject(hdc, GetStockObject(NULL_BRUSH));
hNewPen = CreatePen(PS_ALTERNATE, 1, GetSysColor(COLOR_WINDOWTEXT));
hOldPen = SelectObject(hdc, hNewPen);
oldDrawMode = SetROP2(hdc, R2_XORPEN);
oldBkMode = SetBkMode(hdc, TRANSPARENT);
Rectangle(hdc, rc->left, rc->top, rc->right, rc->bottom);
SetBkMode(hdc, oldBkMode);
SetROP2(hdc, oldDrawMode);
SelectObject(hdc, hOldPen);
DeleteObject(hNewPen);
SelectObject(hdc, hOldBrush);
return TRUE;
}
/**********************************************************************
* DrawAnimatedRects (USER32.@)
*/
BOOL WINAPI DrawAnimatedRects( HWND hwnd, INT idAni,
const RECT* lprcFrom,
const RECT* lprcTo )
{
FIXME_(win)("(0x%x,%d,%p,%p): stub\n",hwnd,idAni,lprcFrom,lprcTo);
return TRUE;
}
/**********************************************************************
* PAINTING_DrawStateJam
*
* Jams in the requested type in the dc
*/
static BOOL PAINTING_DrawStateJam(HDC hdc, UINT opcode,
DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
LPRECT rc, UINT dtflags, BOOL unicode )
{
HDC memdc;
HBITMAP hbmsave;
BOOL retval;
INT cx = rc->right - rc->left;
INT cy = rc->bottom - rc->top;
switch(opcode)
{
case DST_TEXT:
case DST_PREFIXTEXT:
if(unicode)
return DrawTextW(hdc, (LPWSTR)lp, (INT)wp, rc, dtflags);
else
return DrawTextA(hdc, (LPSTR)lp, (INT)wp, rc, dtflags);
case DST_ICON:
return DrawIcon(hdc, rc->left, rc->top, (HICON)lp);
case DST_BITMAP:
memdc = CreateCompatibleDC(hdc);
if(!memdc) return FALSE;
hbmsave = (HBITMAP)SelectObject(memdc, (HBITMAP)lp);
if(!hbmsave)
{
DeleteDC(memdc);
return FALSE;
}
retval = BitBlt(hdc, rc->left, rc->top, cx, cy, memdc, 0, 0, SRCCOPY);
SelectObject(memdc, hbmsave);
DeleteDC(memdc);
return retval;
case DST_COMPLEX:
if(func) {
BOOL bRet;
/* DRAWSTATEPROC assumes that it draws at the center of coordinates */
OffsetViewportOrgEx(hdc, rc->left, rc->top, NULL);
bRet = func(hdc, lp, wp, cx, cy);
/* Restore origin */
OffsetViewportOrgEx(hdc, -rc->left, -rc->top, NULL);
return bRet;
} else
return FALSE;
}
return FALSE;
}
/**********************************************************************
* PAINTING_DrawState()
*/
static BOOL PAINTING_DrawState(HDC hdc, HBRUSH hbr, DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
INT x, INT y, INT cx, INT cy, UINT flags, BOOL unicode )
{
HBITMAP hbm, hbmsave;
HFONT hfsave;
HBRUSH hbsave, hbrtmp = 0;
HDC memdc;
RECT rc;
UINT dtflags = DT_NOCLIP;
COLORREF fg, bg;
UINT opcode = flags & 0xf;
INT len = wp;
BOOL retval, tmp;
if((opcode == DST_TEXT || opcode == DST_PREFIXTEXT) && !len) /* The string is '\0' terminated */
{
if(unicode)
len = strlenW((LPWSTR)lp);
else
len = strlen((LPSTR)lp);
}
/* Find out what size the image has if not given by caller */
if(!cx || !cy)
{
SIZE s;
CURSORICONINFO *ici;
BITMAP bm;
switch(opcode)
{
case DST_TEXT:
case DST_PREFIXTEXT:
if(unicode)
retval = GetTextExtentPoint32W(hdc, (LPWSTR)lp, len, &s);
else
retval = GetTextExtentPoint32A(hdc, (LPSTR)lp, len, &s);
if(!retval) return FALSE;
break;
case DST_ICON:
ici = (CURSORICONINFO *)GlobalLock16((HGLOBAL16)lp);
if(!ici) return FALSE;
s.cx = ici->nWidth;
s.cy = ici->nHeight;
GlobalUnlock16((HGLOBAL16)lp);
break;
case DST_BITMAP:
if(!GetObjectA((HBITMAP)lp, sizeof(bm), &bm))
return FALSE;
s.cx = bm.bmWidth;
s.cy = bm.bmHeight;
break;
case DST_COMPLEX: /* cx and cy must be set in this mode */
return FALSE;
}
if(!cx) cx = s.cx;
if(!cy) cy = s.cy;
}
rc.left = x;
rc.top = y;
rc.right = x + cx;
rc.bottom = y + cy;
if(flags & DSS_RIGHT) /* This one is not documented in the win32.hlp file */
dtflags |= DT_RIGHT;
if(opcode == DST_TEXT)
dtflags |= DT_NOPREFIX;
/* For DSS_NORMAL we just jam in the image and return */
if((flags & 0x7ff0) == DSS_NORMAL)
{
return PAINTING_DrawStateJam(hdc, opcode, func, lp, len, &rc, dtflags, unicode);
}
/* For all other states we need to convert the image to B/W in a local bitmap */
/* before it is displayed */
fg = SetTextColor(hdc, RGB(0, 0, 0));
bg = SetBkColor(hdc, RGB(255, 255, 255));
hbm = (HBITMAP)NULL; hbmsave = (HBITMAP)NULL;
memdc = (HDC)NULL; hbsave = (HBRUSH)NULL;
retval = FALSE; /* assume failure */
/* From here on we must use "goto cleanup" when something goes wrong */
hbm = CreateBitmap(cx, cy, 1, 1, NULL);
if(!hbm) goto cleanup;
memdc = CreateCompatibleDC(hdc);
if(!memdc) goto cleanup;
hbmsave = (HBITMAP)SelectObject(memdc, hbm);
if(!hbmsave) goto cleanup;
rc.left = rc.top = 0;
rc.right = cx;
rc.bottom = cy;
if(!FillRect(memdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH))) goto cleanup;
SetBkColor(memdc, RGB(255, 255, 255));
SetTextColor(memdc, RGB(0, 0, 0));
hfsave = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
/* DST_COMPLEX may draw text as well,
* so we must be sure that correct font is selected
*/
if(!hfsave && (opcode <= DST_PREFIXTEXT)) goto cleanup;
tmp = PAINTING_DrawStateJam(memdc, opcode, func, lp, len, &rc, dtflags, unicode);
if(hfsave) SelectObject(memdc, hfsave);
if(!tmp) goto cleanup;
/* This state cause the image to be dithered */
if(flags & DSS_UNION)
{
hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
if(!hbsave) goto cleanup;
tmp = PatBlt(memdc, 0, 0, cx, cy, 0x00FA0089);
SelectObject(memdc, hbsave);
if(!tmp) goto cleanup;
}
if (flags & DSS_DISABLED)
hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DHILIGHT));
else if (flags & DSS_DEFAULT)
hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
/* Draw light or dark shadow */
if (flags & (DSS_DISABLED|DSS_DEFAULT))
{
if(!hbrtmp) goto cleanup;
hbsave = (HBRUSH)SelectObject(hdc, hbrtmp);
if(!hbsave) goto cleanup;
if(!BitBlt(hdc, x+1, y+1, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
SelectObject(hdc, hbsave);
DeleteObject(hbrtmp);
hbrtmp = 0;
}
if (flags & DSS_DISABLED)
{
hbr = hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
if(!hbrtmp) goto cleanup;
}
else if (!hbr)
{
hbr = (HBRUSH)GetStockObject(BLACK_BRUSH);
}
hbsave = (HBRUSH)SelectObject(hdc, hbr);
if(!BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
retval = TRUE; /* We succeeded */
cleanup:
SetTextColor(hdc, fg);
SetBkColor(hdc, bg);
if(hbsave) SelectObject(hdc, hbsave);
if(hbmsave) SelectObject(memdc, hbmsave);
if(hbrtmp) DeleteObject(hbrtmp);
if(hbm) DeleteObject(hbm);
if(memdc) DeleteDC(memdc);
return retval;
}
/**********************************************************************
* DrawStateA (USER32.@)
*/
BOOL WINAPI DrawStateA(HDC hdc, HBRUSH hbr,
DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
INT x, INT y, INT cx, INT cy, UINT flags)
{
return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, FALSE);
}
/**********************************************************************
* DrawStateW (USER32.@)
*/
BOOL WINAPI DrawStateW(HDC hdc, HBRUSH hbr,
DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
INT x, INT y, INT cx, INT cy, UINT flags)
{
return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, TRUE);
}
/**********************************************************************
* DrawState (USER.449)
*/
BOOL16 WINAPI DrawState16( HDC16 hdc, HBRUSH16 hbr, DRAWSTATEPROC16 func, LPARAM ldata,
WPARAM16 wdata, INT16 x, INT16 y, INT16 cx, INT16 cy, UINT16 flags )
{
struct draw_state_info info;
UINT opcode = flags & 0xf;
if (opcode == DST_TEXT || opcode == DST_PREFIXTEXT)
{
/* make sure DrawStateA doesn't try to use ldata as a pointer */
if (!wdata) wdata = strlen( MapSL(ldata) );
if (!cx || !cy)
{
SIZE s;
if (!GetTextExtentPoint32A( hdc, MapSL(ldata), wdata, &s )) return FALSE;
if (!cx) cx = s.cx;
if (!cy) cy = s.cy;
}
}
info.proc = func;
info.param = ldata;
return DrawStateA( hdc, hbr, draw_state_callback, (LPARAM)&info, wdata, x, y, cx, cy, flags );
}
/***********************************************************************
* SelectPalette (USER.282)
*/
HPALETTE16 WINAPI SelectPalette16( HDC16 hDC, HPALETTE16 hPal,
BOOL16 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 GDISelectPalette16( hDC, hPal, wBkgPalette);
}
/***********************************************************************
* RealizePalette (USER.283)
*/
UINT16 WINAPI RealizePalette16( HDC16 hDC )
{
UINT16 realized = GDIRealizePalette16( hDC );
/* do not send anything if no colors were changed */
if (realized && IsDCCurrentPalette16( hDC ))
{
/* send palette change notification */
HWND hWnd = WindowFromDC( hDC );
if (hWnd) SendMessageA( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0L);
}
return realized;
}
/***********************************************************************
* UserRealizePalette (USER32.@)
*/
UINT WINAPI UserRealizePalette( HDC hDC )
{
return RealizePalette16( hDC );
}
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