windows/caret.c

   1 /*
   2  * Caret functions
   3  *
   4  * Copyright 1993 David Metcalfe
   5  * Copyright 1996 Frans van Dorsselaer
   6  */
   7
   8 #include "windef.h"
   9 #include "winbase.h"
  10 #include "wingdi.h"
  11 #include "winuser.h"
  12 #include "wine/wingdi16.h"
  13 #include "wine/winuser16.h"
  14 #include "win.h"
  15 #include "debugtools.h"
  16
  17 DEFAULT_DEBUG_CHANNEL(caret);
  18
  19 typedef struct
  20 {
  21     HWND     hwnd;
  22     UINT     hidden;
  23     BOOL     on;
  24     INT      x;
  25     INT      y;
  26     INT      width;
  27     INT      height;
  28     HBRUSH16   hBrush;
  29     UINT     timeout;
  30     UINT     timerid;
  31 } CARET;
  32
  33 typedef enum
  34 {
  35     CARET_OFF = 0,
  36     CARET_ON,
  37     CARET_TOGGLE
  38 } DISPLAY_CARET;
  39
  40 static CARET Caret = { 0, 0, FALSE, 0, 0, 2, 12, 0, 500, 0 };
  41
  42 /*****************************************************************
  43  *              CARET_GetHwnd
  44  */
  45 HWND CARET_GetHwnd(void)
  46 {
  47     return Caret.hwnd;
  48 }
  49
  50 /*****************************************************************
  51  *              CARET_GetRect
  52  */
  53 void CARET_GetRect(LPRECT lprc)
  54 {
  55     lprc->right = (lprc->left = Caret.x) + Caret.width - 1;
  56     lprc->bottom = (lprc->top = Caret.y) + Caret.height - 1;
  57 }
  58
  59 /*****************************************************************
  60  *               CARET_DisplayCaret
  61  */
  62 static void CARET_DisplayCaret( DISPLAY_CARET status )
  63 {
  64     HDC hdc;
  65     HBRUSH16 hPrevBrush;
  66
  67     if (Caret.on && (status == CARET_ON)) return;
  68     if (!Caret.on && (status == CARET_OFF)) return;
  69
  70     /* So now it's always a toggle */
  71
  72     Caret.on = !Caret.on;
  73     /* do not use DCX_CACHE here, for x,y,width,height are in logical units */
  74     if (!(hdc = GetDCEx( Caret.hwnd, 0, DCX_USESTYLE /*| DCX_CACHE*/ ))) return;
  75     hPrevBrush = SelectObject( hdc, Caret.hBrush );
  76     PatBlt( hdc, Caret.x, Caret.y, Caret.width, Caret.height, PATINVERT );
  77     SelectObject( hdc, hPrevBrush );
  78     ReleaseDC( Caret.hwnd, hdc );
  79 }
  80
  81
  82 /*****************************************************************
  83  *               CARET_Callback
  84  */
  85 static VOID CALLBACK CARET_Callback( HWND hwnd, UINT msg, UINT id, DWORD ctime)
  86 {
  87     TRACE("hwnd=%04x, timerid=%d, caret=%d\n",
  88                   hwnd, id, Caret.on);
  89     CARET_DisplayCaret(CARET_TOGGLE);
  90 }
  91
  92
  93 /*****************************************************************
  94  *               CARET_SetTimer
  95  */
  96 static void CARET_SetTimer(void)
  97 {
  98     if (Caret.timerid) KillSystemTimer( (HWND)0, Caret.timerid );
  99     Caret.timerid = SetSystemTimer( (HWND)0, 0, Caret.timeout,
 100                                       CARET_Callback );
 101 }
 102
 103
 104 /*****************************************************************
 105  *               CARET_ResetTimer
 106  */
 107 static void CARET_ResetTimer(void)
 108 {
 109     if (Caret.timerid)
 110     {
 111         KillSystemTimer( (HWND)0, Caret.timerid );
 112         Caret.timerid = SetSystemTimer( (HWND)0, 0, Caret.timeout,
 113                                           CARET_Callback );
 114     }
 115 }
 116
 117
 118 /*****************************************************************
 119  *               CARET_KillTimer
 120  */
 121 static void CARET_KillTimer(void)
 122 {
 123     if (Caret.timerid)
 124     {
 125         KillSystemTimer( (HWND)0, Caret.timerid );
 126         Caret.timerid = 0;
 127     }
 128 }
 129
 130
 131 /*****************************************************************
 132  *           CreateCaret16   (USER.163)
 133  */
 134 void WINAPI CreateCaret16( HWND16 hwnd, HBITMAP16 bitmap,
 135                            INT16 width, INT16 height )
 136 {
 137     CreateCaret( hwnd, bitmap, width, height );
 138 }
 139
 140 /*****************************************************************
 141  *           CreateCaret   (USER32.66)
 142  */
 143 BOOL WINAPI CreateCaret( HWND hwnd, HBITMAP bitmap,
 144                              INT width, INT height )
 145 {
 146     TRACE("hwnd=%04x\n", hwnd);
 147
 148     if (!hwnd) return FALSE;
 149
 150     /* if cursor already exists, destroy it */
 151     if (Caret.hwnd) DestroyCaret();
 152
 153     if (bitmap && (bitmap != 1))
 154     {
 155         BITMAP bmp;
 156         if (!GetObjectA( bitmap, sizeof(bmp), &bmp )) return FALSE;
 157         Caret.width = bmp.bmWidth;
 158         Caret.height = bmp.bmHeight;
 159         /* FIXME: we should make a copy of the bitmap instead of a brush */
 160         Caret.hBrush = CreatePatternBrush( bitmap );
 161     }
 162     else
 163     {
 164         Caret.width = width ? width : GetSystemMetrics(SM_CXBORDER);
 165         Caret.height = height ? height : GetSystemMetrics(SM_CYBORDER);
 166         Caret.hBrush = CreateSolidBrush(bitmap ?
 167                                           GetSysColor(COLOR_GRAYTEXT) :
 168                                           GetSysColor(COLOR_WINDOW) );
 169     }
 170
 171     Caret.hwnd = hwnd;
 172     Caret.hidden = 1;
 173     Caret.on = FALSE;
 174     Caret.x = 0;
 175     Caret.y = 0;
 176
 177     Caret.timeout = GetProfileIntA( "windows", "CursorBlinkRate", 500 );
 178     return TRUE;
 179 }
 180
 181
 182 /*****************************************************************
 183  *           DestroyCaret16   (USER.164)
 184  */
 185 void WINAPI DestroyCaret16(void)
 186 {
 187     DestroyCaret();
 188 }
 189
 190
 191 /*****************************************************************
 192  *           DestroyCaret   (USER32.131)
 193  */
 194 BOOL WINAPI DestroyCaret(void)
 195 {
 196     if (!Caret.hwnd) return FALSE;
 197
 198     TRACE("hwnd=%04x, timerid=%d\n",
 199                 Caret.hwnd, Caret.timerid);
 200
 201     CARET_KillTimer();
 202     CARET_DisplayCaret(CARET_OFF);
 203     DeleteObject( Caret.hBrush );
 204     Caret.hwnd = 0;
 205     return TRUE;
 206 }
 207
 208
 209 /*****************************************************************
 210  *           SetCaretPos16   (USER.165)
 211  */
 212 void WINAPI SetCaretPos16( INT16 x, INT16 y )
 213 {
 214     SetCaretPos( x, y );
 215 }
 216
 217
 218 /*****************************************************************
 219  *           SetCaretPos   (USER32.466)
 220  */
 221 BOOL WINAPI SetCaretPos( INT x, INT y)
 222 {
 223     if (!Caret.hwnd) return FALSE;
 224     if ((x == Caret.x) && (y == Caret.y)) return TRUE;
 225
 226     TRACE("x=%d, y=%d\n", x, y);
 227
 228     CARET_KillTimer();
 229     CARET_DisplayCaret(CARET_OFF);
 230     Caret.x = x;
 231     Caret.y = y;
 232     if (!Caret.hidden)
 233     {
 234         CARET_DisplayCaret(CARET_ON);
 235         CARET_SetTimer();
 236     }
 237     return TRUE;
 238 }
 239
 240
 241 /*****************************************************************
 242  *           HideCaret16   (USER.166)
 243  */
 244 void WINAPI HideCaret16( HWND16 hwnd )
 245 {
 246     HideCaret( hwnd );
 247 }
 248
 249
 250 /*****************************************************************
 251  *           HideCaret   (USER32.317)
 252  */
 253 BOOL WINAPI HideCaret( HWND hwnd )
 254 {
 255     if (!Caret.hwnd) return FALSE;
 256     if (hwnd && (Caret.hwnd != hwnd)) return FALSE;
 257
 258     TRACE("hwnd=%04x, hidden=%d\n",
 259                   hwnd, Caret.hidden);
 260
 261     CARET_KillTimer();
 262     CARET_DisplayCaret(CARET_OFF);
 263     Caret.hidden++;
 264     return TRUE;
 265 }
 266
 267
 268 /*****************************************************************
 269  *           ShowCaret16   (USER.167)
 270  */
 271 void WINAPI ShowCaret16( HWND16 hwnd )
 272 {
 273     ShowCaret( hwnd );
 274 }
 275
 276
 277 /*****************************************************************
 278  *           ShowCaret   (USER32.529)
 279  */
 280 BOOL WINAPI ShowCaret( HWND hwnd )
 281 {
 282     if (!Caret.hwnd) return FALSE;
 283     if (hwnd && (Caret.hwnd != hwnd)) return FALSE;
 284
 285     TRACE("hwnd=%04x, hidden=%d\n",
 286                 hwnd, Caret.hidden);
 287
 288     if (Caret.hidden)
 289     {
 290         Caret.hidden--;
 291         if (!Caret.hidden)
 292         {
 293             CARET_DisplayCaret(CARET_ON);
 294             CARET_SetTimer();
 295         }
 296     }
 297     return TRUE;
 298 }
 299
 300
 301 /*****************************************************************
 302  *           SetCaretBlinkTime16   (USER.168)
 303  */
 304 void WINAPI SetCaretBlinkTime16( UINT16 msecs )
 305 {
 306     SetCaretBlinkTime( msecs );
 307 }
 308
 309 /*****************************************************************
 310  *           SetCaretBlinkTime   (USER32.465)
 311  */
 312 BOOL WINAPI SetCaretBlinkTime( UINT msecs )
 313 {
 314     if (!Caret.hwnd) return FALSE;
 315
 316     TRACE("hwnd=%04x, msecs=%d\n",
 317                 Caret.hwnd, msecs);
 318
 319     Caret.timeout = msecs;
 320     CARET_ResetTimer();
 321     return TRUE;
 322 }
 323
 324
 325 /*****************************************************************
 326  *           GetCaretBlinkTime16   (USER.169)
 327  */
 328 UINT16 WINAPI GetCaretBlinkTime16(void)
 329 {
 330     return (UINT16)GetCaretBlinkTime();
 331 }
 332
 333
 334 /*****************************************************************
 335  *           GetCaretBlinkTime   (USER32.209)
 336  */
 337 UINT WINAPI GetCaretBlinkTime(void)
 338 {
 339     return Caret.timeout;
 340 }
 341
 342
 343 /*****************************************************************
 344  *           GetCaretPos16   (USER.183)
 345  */
 346 VOID WINAPI GetCaretPos16( LPPOINT16 pt )
 347 {
 348     if (!Caret.hwnd || !pt) return;
 349
 350     TRACE("hwnd=%04x, pt=%p, x=%d, y=%d\n",
 351                   Caret.hwnd, pt, Caret.x, Caret.y);
 352     pt->x = (INT16)Caret.x;
 353     pt->y = (INT16)Caret.y;
 354 }
 355
 356
 357 /*****************************************************************
 358  *           GetCaretPos   (USER32.210)
 359  */
 360 BOOL WINAPI GetCaretPos( LPPOINT pt )
 361 {
 362     if (!Caret.hwnd || !pt) return FALSE;
 363     pt->x = Caret.x;
 364     pt->y = Caret.y;
 365     return TRUE;
 366 }