caret.c 10.7 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
/*
 * 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
21
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 23
 */

Steven Edwards's avatar
Steven Edwards committed
24 25 26
#include "config.h"
#include "wine/port.h"

27 28
#include <stdarg.h>

29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
#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
 */
76
static void CALLBACK CARET_Callback( HWND hwnd, UINT msg, UINT_PTR id, DWORD ctime)
77 78 79 80 81 82 83 84
{
    BOOL ret;
    RECT r;
    int hidden = 0;

    SERVER_START_REQ( set_caret_info )
    {
        req->flags  = SET_CARET_STATE;
85
        req->handle = wine_server_user_handle( hwnd );
86 87 88 89 90 91
        req->x      = 0;
        req->y      = 0;
        req->hide   = 0;
        req->state  = -1;  /* toggle current state */
        if ((ret = !wine_server_call( req )))
        {
92
            hwnd      = wine_server_ptr_handle( reply->full_handle );
93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
            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;

118
    TRACE("hwnd=%p\n", hwnd);
119 120 121

    if (!hwnd) return FALSE;

122
    if (bitmap && (bitmap != (HBITMAP)1))
123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156
    {
        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 );
157
		    FillRect(hMemDC, &r, bitmap ? GetStockObject(GRAY_BRUSH) : GetStockObject(WHITE_BRUSH));
158 159 160 161 162 163 164 165 166 167 168
		    SelectObject(hMemDC, hPrevBmp);
		}
		DeleteDC(hMemDC);
	    }
	    ReleaseDC(hwnd, hdc);
	}
    }
    if (!hBmp) return FALSE;

    SERVER_START_REQ( set_caret_window )
    {
169
        req->handle = wine_server_user_handle( hwnd );
170 171 172 173
        req->width  = width;
        req->height = height;
        if ((ret = !wine_server_call_err( req )))
        {
174
            prev      = wine_server_ptr_handle( reply->previous );
175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217
            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 )))
        {
218
            prev      = wine_server_ptr_handle( reply->previous );
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261
            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 )))
        {
262
            hwnd      = wine_server_ptr_handle( reply->full_handle );
263 264 265 266 267 268 269 270 271
            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;
272
    if (ret && !hidden && (x != r.left || y != r.top))
273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298
    {
        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;
299
        req->handle = wine_server_user_handle( hwnd );
300 301 302 303 304 305
        req->x      = 0;
        req->y      = 0;
        req->hide   = 1;
        req->state  = 0;
        if ((ret = !wine_server_call_err( req )))
        {
306
            hwnd      = wine_server_ptr_handle( reply->full_handle );
307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337
            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;
338
        req->handle = wine_server_user_handle( hwnd );
339 340 341 342 343 344
        req->x      = 0;
        req->y      = 0;
        req->hide   = -1;
        req->state  = 1;
        if ((ret = !wine_server_call_err( req )))
        {
345
            hwnd      = wine_server_ptr_handle( reply->full_handle );
346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409
            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;
}