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wine/dlls/user32/caret.c

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/*
* Caret functions
*
* Copyright 1993 David Metcalfe
* Copyright 1996 Frans van Dorsselaer
* Copyright 2001 Eric Pouech
* Copyright 2002 Alexandre Julliard
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "wine/server.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(caret);
typedef struct
{
HBITMAP hBmp;
UINT timeout;
} CARET;
static CARET Caret = { 0, 500 };
#define TIMERID 0xffff /* system timer id for the caret */
/*****************************************************************
* CARET_DisplayCaret
*/
static void CARET_DisplayCaret( HWND hwnd, const RECT *r )
{
HDC hdc;
HDC hCompDC;
/* do not use DCX_CACHE here, for x,y,width,height are in logical units */
if (!(hdc = GetDCEx( hwnd, 0, DCX_USESTYLE /*| DCX_CACHE*/ ))) return;
hCompDC = CreateCompatibleDC(hdc);
if (hCompDC)
{
HBITMAP hPrevBmp;
hPrevBmp = SelectObject(hCompDC, Caret.hBmp);
BitBlt(hdc, r->left, r->top, r->right-r->left, r->bottom-r->top, hCompDC, 0, 0, SRCINVERT);
SelectObject(hCompDC, hPrevBmp);
DeleteDC(hCompDC);
}
ReleaseDC( hwnd, hdc );
}
/*****************************************************************
* CARET_Callback
*/
static void CALLBACK CARET_Callback( HWND hwnd, UINT msg, UINT_PTR id, DWORD ctime)
{
BOOL ret;
RECT r;
int hidden = 0;
SERVER_START_REQ( set_caret_info )
{
req->flags = SET_CARET_STATE;
req->handle = wine_server_user_handle( hwnd );
req->x = 0;
req->y = 0;
req->hide = 0;
req->state = -1; /* toggle current state */
if ((ret = !wine_server_call( req )))
{
hwnd = wine_server_ptr_handle( reply->full_handle );
r.left = reply->old_rect.left;
r.top = reply->old_rect.top;
r.right = reply->old_rect.right;
r.bottom = reply->old_rect.bottom;
hidden = reply->old_hide;
}
}
SERVER_END_REQ;
if (ret && !hidden) CARET_DisplayCaret( hwnd, &r );
}
/*****************************************************************
* CreateCaret (USER32.@)
*/
BOOL WINAPI CreateCaret( HWND hwnd, HBITMAP bitmap, INT width, INT height )
{
BOOL ret;
RECT r;
int old_state = 0;
int hidden = 0;
HBITMAP hBmp = 0;
HWND prev = 0;
TRACE("hwnd=%p\n", hwnd);
if (!hwnd) return FALSE;
if (bitmap && (bitmap != (HBITMAP)1))
{
BITMAP bmp;
if (!GetObjectA( bitmap, sizeof(bmp), &bmp )) return FALSE;
width = bmp.bmWidth;
height = bmp.bmHeight;
bmp.bmBits = NULL;
hBmp = CreateBitmapIndirect(&bmp);
if (hBmp)
{
/* copy the bitmap */
LPBYTE buf = HeapAlloc(GetProcessHeap(), 0, bmp.bmWidthBytes * bmp.bmHeight);
GetBitmapBits(bitmap, bmp.bmWidthBytes * bmp.bmHeight, buf);
SetBitmapBits(hBmp, bmp.bmWidthBytes * bmp.bmHeight, buf);
HeapFree(GetProcessHeap(), 0, buf);
}
}
else
{
HDC hdc;
if (!width) width = GetSystemMetrics(SM_CXBORDER);
if (!height) height = GetSystemMetrics(SM_CYBORDER);
/* create the uniform bitmap on the fly */
hdc = GetDC(hwnd);
if (hdc)
{
HDC hMemDC = CreateCompatibleDC(hdc);
if (hMemDC)
{
if ((hBmp = CreateCompatibleBitmap(hMemDC, width, height )))
{
HBITMAP hPrevBmp = SelectObject(hMemDC, hBmp);
SetRect( &r, 0, 0, width, height );
FillRect(hMemDC, &r, bitmap ? GetStockObject(GRAY_BRUSH) : GetStockObject(WHITE_BRUSH));
SelectObject(hMemDC, hPrevBmp);
}
DeleteDC(hMemDC);
}
ReleaseDC(hwnd, hdc);
}
}
if (!hBmp) return FALSE;
SERVER_START_REQ( set_caret_window )
{
req->handle = wine_server_user_handle( hwnd );
req->width = width;
req->height = height;
if ((ret = !wine_server_call_err( req )))
{
prev = wine_server_ptr_handle( reply->previous );
r.left = reply->old_rect.left;
r.top = reply->old_rect.top;
r.right = reply->old_rect.right;
r.bottom = reply->old_rect.bottom;
old_state = reply->old_state;
hidden = reply->old_hide;
}
}
SERVER_END_REQ;
if (!ret) return FALSE;
if (prev && !hidden) /* hide the previous one */
{
/* FIXME: won't work if prev belongs to a different process */
KillSystemTimer( prev, TIMERID );
if (old_state) CARET_DisplayCaret( prev, &r );
}
if (Caret.hBmp) DeleteObject( Caret.hBmp );
Caret.hBmp = hBmp;
Caret.timeout = GetProfileIntA( "windows", "CursorBlinkRate", 500 );
return TRUE;
}
/*****************************************************************
* DestroyCaret (USER32.@)
*/
BOOL WINAPI DestroyCaret(void)
{
BOOL ret;
HWND prev = 0;
RECT r;
int old_state = 0;
int hidden = 0;
SERVER_START_REQ( set_caret_window )
{
req->handle = 0;
req->width = 0;
req->height = 0;
if ((ret = !wine_server_call_err( req )))
{
prev = wine_server_ptr_handle( reply->previous );
r.left = reply->old_rect.left;
r.top = reply->old_rect.top;
r.right = reply->old_rect.right;
r.bottom = reply->old_rect.bottom;
old_state = reply->old_state;
hidden = reply->old_hide;
}
}
SERVER_END_REQ;
if (ret && prev && !hidden)
{
/* FIXME: won't work if prev belongs to a different process */
KillSystemTimer( prev, TIMERID );
if (old_state) CARET_DisplayCaret( prev, &r );
}
if (Caret.hBmp) DeleteObject( Caret.hBmp );
Caret.hBmp = 0;
return ret;
}
/*****************************************************************
* SetCaretPos (USER32.@)
*/
BOOL WINAPI SetCaretPos( INT x, INT y )
{
BOOL ret;
HWND hwnd = 0;
RECT r;
int old_state = 0;
int hidden = 0;
SERVER_START_REQ( set_caret_info )
{
req->flags = SET_CARET_POS|SET_CARET_STATE;
req->handle = 0;
req->x = x;
req->y = y;
req->hide = 0;
req->state = 1;
if ((ret = !wine_server_call_err( req )))
{
hwnd = wine_server_ptr_handle( reply->full_handle );
r.left = reply->old_rect.left;
r.top = reply->old_rect.top;
r.right = reply->old_rect.right;
r.bottom = reply->old_rect.bottom;
old_state = reply->old_state;
hidden = reply->old_hide;
}
}
SERVER_END_REQ;
if (ret && !hidden && (x != r.left || y != r.top))
{
if (old_state) CARET_DisplayCaret( hwnd, &r );
r.right += x - r.left;
r.bottom += y - r.top;
r.left = x;
r.top = y;
CARET_DisplayCaret( hwnd, &r );
SetSystemTimer( hwnd, TIMERID, Caret.timeout, CARET_Callback );
}
return ret;
}
/*****************************************************************
* HideCaret (USER32.@)
*/
BOOL WINAPI HideCaret( HWND hwnd )
{
BOOL ret;
RECT r;
int old_state = 0;
int hidden = 0;
SERVER_START_REQ( set_caret_info )
{
req->flags = SET_CARET_HIDE|SET_CARET_STATE;
req->handle = wine_server_user_handle( hwnd );
req->x = 0;
req->y = 0;
req->hide = 1;
req->state = 0;
if ((ret = !wine_server_call_err( req )))
{
hwnd = wine_server_ptr_handle( reply->full_handle );
r.left = reply->old_rect.left;
r.top = reply->old_rect.top;
r.right = reply->old_rect.right;
r.bottom = reply->old_rect.bottom;
old_state = reply->old_state;
hidden = reply->old_hide;
}
}
SERVER_END_REQ;
if (ret && !hidden)
{
if (old_state) CARET_DisplayCaret( hwnd, &r );
KillSystemTimer( hwnd, TIMERID );
}
return ret;
}
/*****************************************************************
* ShowCaret (USER32.@)
*/
BOOL WINAPI ShowCaret( HWND hwnd )
{
BOOL ret;
RECT r;
int hidden = 0;
SERVER_START_REQ( set_caret_info )
{
req->flags = SET_CARET_HIDE|SET_CARET_STATE;
req->handle = wine_server_user_handle( hwnd );
req->x = 0;
req->y = 0;
req->hide = -1;
req->state = 1;
if ((ret = !wine_server_call_err( req )))
{
hwnd = wine_server_ptr_handle( reply->full_handle );
r.left = reply->old_rect.left;
r.top = reply->old_rect.top;
r.right = reply->old_rect.right;
r.bottom = reply->old_rect.bottom;
hidden = reply->old_hide;
}
}
SERVER_END_REQ;
if (ret && (hidden == 1)) /* hidden was 1 so it's now 0 */
{
CARET_DisplayCaret( hwnd, &r );
SetSystemTimer( hwnd, TIMERID, Caret.timeout, CARET_Callback );
}
return ret;
}
/*****************************************************************
* GetCaretPos (USER32.@)
*/
BOOL WINAPI GetCaretPos( LPPOINT pt )
{
BOOL ret;
SERVER_START_REQ( set_caret_info )
{
req->flags = 0; /* don't set anything */
req->handle = 0;
req->x = 0;
req->y = 0;
req->hide = 0;
req->state = 0;
if ((ret = !wine_server_call_err( req )))
{
pt->x = reply->old_rect.left;
pt->y = reply->old_rect.top;
}
}
SERVER_END_REQ;
return ret;
}
/*****************************************************************
* SetCaretBlinkTime (USER32.@)
*/
BOOL WINAPI SetCaretBlinkTime( UINT msecs )
{
TRACE("msecs=%d\n", msecs);
Caret.timeout = msecs;
/* if (Caret.hwnd) CARET_SetTimer(); FIXME */
return TRUE;
}
/*****************************************************************
* GetCaretBlinkTime (USER32.@)
*/
UINT WINAPI GetCaretBlinkTime(void)
{
return Caret.timeout;
}
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