dlls/comctl32/hotkey.c

   1 /*
   2  * Hotkey control
   3  *
   4  * Copyright 1998, 1999 Eric Kohl
   5  * Copyright 2002 Gyorgy 'Nog' Jeney
   6  * Copyright 2004 Robert Shearman
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  *
  22  * This code was audited for completeness against the documented features
  23  * of Comctl32.dll version 6.0 on Sep. 21, 2004, by Robert Shearman.
  24  *
  25  * Unless otherwise noted, we believe this code to be complete, as per
  26  * the specification mentioned above.
  27  * If you discover missing features or bugs please note them below.
  28  *
  29  */
  30
  31 #include <stdarg.h>
  32 #include <string.h>
  33 #include "windef.h"
  34 #include "winbase.h"
  35 #include "wingdi.h"
  36 #include "winuser.h"
  37 #include "winnls.h"
  38 #include "commctrl.h"
  39 #include "comctl32.h"
  40 #include "wine/debug.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(hotkey);
  43
  44 typedef struct tagHOTKEY_INFO
  45 {
  46     HWND  hwndSelf;
  47     HWND  hwndNotify;
  48     HFONT hFont;
  49     BOOL  bFocus;
  50     INT   nHeight;
  51     WORD  HotKey;
  52     WORD  InvComb;
  53     WORD  InvMod;
  54     BYTE  CurrMod;
  55     INT   CaretPos;
  56     DWORD ScanCode;
  57     WCHAR strNone[15]; /* hope it's long enough ... */
  58 } HOTKEY_INFO;
  59
  60 static const WCHAR HOTKEY_plussep[] = { ' ', '+', ' ' };
  61 static LRESULT HOTKEY_SetFont (HOTKEY_INFO *infoPtr, HFONT hFont, BOOL redraw);
  62
  63 #define IsOnlySet(flags) (infoPtr->CurrMod == (flags))
  64
  65 static BOOL
  66 HOTKEY_IsCombInv(const HOTKEY_INFO *infoPtr)
  67 {
  68     TRACE("(infoPtr=%p)\n", infoPtr);
  69     if((infoPtr->InvComb & HKCOMB_NONE) && !infoPtr->CurrMod)
  70         return TRUE;
  71     if((infoPtr->InvComb & HKCOMB_S) && IsOnlySet(HOTKEYF_SHIFT))
  72         return TRUE;
  73     if((infoPtr->InvComb & HKCOMB_C) && IsOnlySet(HOTKEYF_CONTROL))
  74         return TRUE;
  75     if((infoPtr->InvComb & HKCOMB_A) && IsOnlySet(HOTKEYF_ALT))
  76         return TRUE;
  77     if((infoPtr->InvComb & HKCOMB_SC) &&
  78        IsOnlySet(HOTKEYF_SHIFT | HOTKEYF_CONTROL))
  79         return TRUE;
  80     if((infoPtr->InvComb & HKCOMB_SA) && IsOnlySet(HOTKEYF_SHIFT | HOTKEYF_ALT))
  81         return TRUE;
  82     if((infoPtr->InvComb & HKCOMB_CA) &&
  83        IsOnlySet(HOTKEYF_CONTROL | HOTKEYF_ALT))
  84         return TRUE;
  85     if((infoPtr->InvComb & HKCOMB_SCA) &&
  86        IsOnlySet(HOTKEYF_SHIFT | HOTKEYF_CONTROL | HOTKEYF_ALT))
  87         return TRUE;
  88
  89     TRACE("() Modifiers are valid\n");
  90     return FALSE;
  91 }
  92 #undef IsOnlySet
  93
  94 static void
  95 HOTKEY_DrawHotKey(HOTKEY_INFO *infoPtr, HDC hdc, LPCWSTR KeyName, WORD NameLen)
  96 {
  97     SIZE TextSize;
  98     INT nXStart, nYStart;
  99     COLORREF clrOldText, clrOldBk;
 100     HFONT hFontOld;
 101
 102     /* Make a gap from the frame */
 103     nXStart = GetSystemMetrics(SM_CXBORDER);
 104     nYStart = GetSystemMetrics(SM_CYBORDER);
 105
 106     hFontOld = SelectObject(hdc, infoPtr->hFont);
 107     if (GetWindowLongW(infoPtr->hwndSelf, GWL_STYLE) & WS_DISABLED)
 108     {
 109         clrOldText = SetTextColor(hdc, comctl32_color.clrGrayText);
 110         clrOldBk = SetBkColor(hdc, comctl32_color.clrBtnFace);
 111     }
 112     else
 113     {
 114         clrOldText = SetTextColor(hdc, comctl32_color.clrWindowText);
 115         clrOldBk = SetBkColor(hdc, comctl32_color.clrWindow);
 116     }
 117
 118     TextOutW(hdc, nXStart, nYStart, KeyName, NameLen);
 119
 120     /* Get the text width for the caret */
 121     GetTextExtentPoint32W(hdc, KeyName, NameLen, &TextSize);
 122     infoPtr->CaretPos = nXStart + TextSize.cx;
 123
 124     SetBkColor(hdc, clrOldBk);
 125     SetTextColor(hdc, clrOldText);
 126     SelectObject(hdc, hFontOld);
 127
 128     /* position the caret */
 129     SetCaretPos(infoPtr->CaretPos, nYStart);
 130 }
 131
 132 /* Draw the names of the keys in the control */
 133 static void
 134 HOTKEY_Refresh(HOTKEY_INFO *infoPtr, HDC hdc)
 135 {
 136     WCHAR KeyName[64];
 137     WORD NameLen = 0;
 138     BYTE Modifier;
 139
 140     TRACE("(infoPtr=%p hdc=%p)\n", infoPtr, hdc);
 141
 142     if(!infoPtr->CurrMod && !infoPtr->HotKey) {
 143         HOTKEY_DrawHotKey (infoPtr, hdc, infoPtr->strNone, 4);
 144         return;
 145     }
 146
 147     if(infoPtr->HotKey)
 148         Modifier = HIBYTE(infoPtr->HotKey);
 149     else if(HOTKEY_IsCombInv(infoPtr))
 150         Modifier = infoPtr->InvMod;
 151     else
 152         Modifier = infoPtr->CurrMod;
 153
 154     if(Modifier & HOTKEYF_CONTROL) {
 155         GetKeyNameTextW(MAKELPARAM(0, MapVirtualKeyW(VK_CONTROL, 0)),
 156                                   KeyName, 64);
 157         NameLen = lstrlenW(KeyName);
 158         memcpy(&KeyName[NameLen], HOTKEY_plussep, sizeof(HOTKEY_plussep));
 159         NameLen += 3;
 160     }
 161     if(Modifier & HOTKEYF_SHIFT) {
 162         GetKeyNameTextW(MAKELPARAM(0, MapVirtualKeyW(VK_SHIFT, 0)),
 163                                    &KeyName[NameLen], 64 - NameLen);
 164         NameLen = lstrlenW(KeyName);
 165         memcpy(&KeyName[NameLen], HOTKEY_plussep, sizeof(HOTKEY_plussep));
 166         NameLen += 3;
 167     }
 168     if(Modifier & HOTKEYF_ALT) {
 169         GetKeyNameTextW(MAKELPARAM(0, MapVirtualKeyW(VK_MENU, 0)),
 170                                    &KeyName[NameLen], 64 - NameLen);
 171         NameLen = lstrlenW(KeyName);
 172         memcpy(&KeyName[NameLen], HOTKEY_plussep, sizeof(HOTKEY_plussep));
 173         NameLen += 3;
 174     }
 175
 176     if(infoPtr->HotKey) {
 177         GetKeyNameTextW(infoPtr->ScanCode, &KeyName[NameLen], 64 - NameLen);
 178         NameLen = lstrlenW(KeyName);
 179     }
 180     else
 181         KeyName[NameLen] = 0;
 182
 183     HOTKEY_DrawHotKey (infoPtr, hdc, KeyName, NameLen);
 184 }
 185
 186 static void
 187 HOTKEY_Paint(HOTKEY_INFO *infoPtr, HDC hdc)
 188 {
 189     if (hdc)
 190         HOTKEY_Refresh(infoPtr, hdc);
 191     else {
 192         PAINTSTRUCT ps;
 193         hdc = BeginPaint (infoPtr->hwndSelf, &ps);
 194         HOTKEY_Refresh (infoPtr, hdc);
 195         EndPaint (infoPtr->hwndSelf, &ps);
 196     }
 197 }
 198
 199 static LRESULT
 200 HOTKEY_GetHotKey(const HOTKEY_INFO *infoPtr)
 201 {
 202     TRACE("(infoPtr=%p) Modifiers: 0x%x, Virtual Key: %d\n", infoPtr,
 203           HIBYTE(infoPtr->HotKey), LOBYTE(infoPtr->HotKey));
 204     return (LRESULT)infoPtr->HotKey;
 205 }
 206
 207 static void
 208 HOTKEY_SetHotKey(HOTKEY_INFO *infoPtr, WORD hotKey)
 209 {
 210     infoPtr->HotKey = hotKey;
 211     infoPtr->ScanCode =
 212         MAKELPARAM(0, MapVirtualKeyW(LOBYTE(infoPtr->HotKey), 0));
 213     TRACE("(infoPtr=%p hotKey=%x) Modifiers: 0x%x, Virtual Key: %d\n", infoPtr,
 214           hotKey, HIBYTE(infoPtr->HotKey), LOBYTE(infoPtr->HotKey));
 215     InvalidateRect(infoPtr->hwndSelf, NULL, TRUE);
 216 }
 217
 218 static void
 219 HOTKEY_SetRules(HOTKEY_INFO *infoPtr, WORD invComb, WORD invMod)
 220 {
 221     infoPtr->InvComb = invComb;
 222     infoPtr->InvMod = invMod;
 223     TRACE("(infoPtr=%p) Invalid Modifers: 0x%x, If Invalid: 0x%x\n", infoPtr,
 224           infoPtr->InvComb, infoPtr->InvMod);
 225 }
 226
 227
 228 static LRESULT
 229 HOTKEY_Create (HOTKEY_INFO *infoPtr, const CREATESTRUCTW *lpcs)
 230 {
 231     infoPtr->hwndNotify = lpcs->hwndParent;
 232
 233     HOTKEY_SetFont(infoPtr, GetStockObject(SYSTEM_FONT), 0);
 234
 235     return 0;
 236 }
 237
 238
 239 static LRESULT
 240 HOTKEY_Destroy (HOTKEY_INFO *infoPtr)
 241 {
 242     HWND hwnd = infoPtr->hwndSelf;
 243     /* free hotkey info data */
 244     Free (infoPtr);
 245     SetWindowLongPtrW (hwnd, 0, 0);
 246     return 0;
 247 }
 248
 249
 250 static LRESULT
 251 HOTKEY_EraseBackground (const HOTKEY_INFO *infoPtr, HDC hdc)
 252 {
 253     HBRUSH hBrush, hSolidBrush = NULL;
 254     RECT   rc;
 255
 256     if (GetWindowLongW(infoPtr->hwndSelf, GWL_STYLE) & WS_DISABLED)
 257         hBrush = hSolidBrush = CreateSolidBrush(comctl32_color.clrBtnFace);
 258     else
 259     {
 260         hBrush = (HBRUSH)SendMessageW(infoPtr->hwndNotify, WM_CTLCOLOREDIT,
 261                                       (WPARAM)hdc, (LPARAM)infoPtr->hwndSelf);
 262         if (!hBrush)
 263             hBrush = hSolidBrush = CreateSolidBrush(comctl32_color.clrWindow);
 264     }
 265
 266     GetClientRect (infoPtr->hwndSelf, &rc);
 267
 268     FillRect (hdc, &rc, hBrush);
 269
 270     if (hSolidBrush)
 271         DeleteObject(hSolidBrush);
 272
 273     return -1;
 274 }
 275
 276
 277 static inline LRESULT
 278 HOTKEY_GetFont (const HOTKEY_INFO *infoPtr)
 279 {
 280     return (LRESULT)infoPtr->hFont;
 281 }
 282
 283 static LRESULT
 284 HOTKEY_KeyDown (HOTKEY_INFO *infoPtr, DWORD key, DWORD flags)
 285 {
 286     WORD wOldHotKey;
 287     BYTE bOldMod;
 288
 289     if (GetWindowLongW(infoPtr->hwndSelf, GWL_STYLE) & WS_DISABLED)
 290         return 0;
 291
 292     TRACE("() Key: %d\n", key);
 293
 294     wOldHotKey = infoPtr->HotKey;
 295     bOldMod = infoPtr->CurrMod;
 296
 297     /* If any key is Pressed, we have to reset the hotkey in the control */
 298     infoPtr->HotKey = 0;
 299
 300     switch (key)
 301     {
 302         case VK_RETURN:
 303         case VK_TAB:
 304         case VK_SPACE:
 305         case VK_DELETE:
 306         case VK_ESCAPE:
 307         case VK_BACK:
 308             InvalidateRect(infoPtr->hwndSelf, NULL, TRUE);
 309             return DefWindowProcW (infoPtr->hwndSelf, WM_KEYDOWN, key, flags);
 310
 311         case VK_SHIFT:
 312             infoPtr->CurrMod |= HOTKEYF_SHIFT;
 313             break;
 314         case VK_CONTROL:
 315             infoPtr->CurrMod |= HOTKEYF_CONTROL;
 316             break;
 317         case VK_MENU:
 318             infoPtr->CurrMod |= HOTKEYF_ALT;
 319             break;
 320
 321         default:
 322             if(HOTKEY_IsCombInv(infoPtr))
 323                 infoPtr->HotKey = MAKEWORD(key, infoPtr->InvMod);
 324             else
 325                 infoPtr->HotKey = MAKEWORD(key, infoPtr->CurrMod);
 326             infoPtr->ScanCode = flags;
 327             break;
 328     }
 329
 330     if ((wOldHotKey != infoPtr->HotKey) || (bOldMod != infoPtr->CurrMod))
 331     {
 332         InvalidateRect(infoPtr->hwndSelf, NULL, TRUE);
 333
 334         /* send EN_CHANGE notification */
 335         SendMessageW(infoPtr->hwndNotify, WM_COMMAND,
 336             MAKEWPARAM(GetDlgCtrlID(infoPtr->hwndSelf), EN_CHANGE),
 337             (LPARAM)infoPtr->hwndSelf);
 338     }
 339
 340     return 0;
 341 }
 342
 343
 344 static LRESULT
 345 HOTKEY_KeyUp (HOTKEY_INFO *infoPtr, DWORD key, DWORD flags)
 346 {
 347     BYTE bOldMod;
 348
 349     if (GetWindowLongW(infoPtr->hwndSelf, GWL_STYLE) & WS_DISABLED)
 350         return 0;
 351
 352     TRACE("() Key: %d\n", key);
 353
 354     bOldMod = infoPtr->CurrMod;
 355
 356     switch (key)
 357     {
 358         case VK_SHIFT:
 359             infoPtr->CurrMod &= ~HOTKEYF_SHIFT;
 360             break;
 361         case VK_CONTROL:
 362             infoPtr->CurrMod &= ~HOTKEYF_CONTROL;
 363             break;
 364         case VK_MENU:
 365             infoPtr->CurrMod &= ~HOTKEYF_ALT;
 366             break;
 367         default:
 368             return 1;
 369     }
 370
 371     if (bOldMod != infoPtr->CurrMod)
 372     {
 373         InvalidateRect(infoPtr->hwndSelf, NULL, TRUE);
 374
 375         /* send EN_CHANGE notification */
 376         SendMessageW(infoPtr->hwndNotify, WM_COMMAND,
 377             MAKEWPARAM(GetDlgCtrlID(infoPtr->hwndSelf), EN_CHANGE),
 378             (LPARAM)infoPtr->hwndSelf);
 379     }
 380
 381     return 0;
 382 }
 383
 384
 385 static LRESULT
 386 HOTKEY_KillFocus (HOTKEY_INFO *infoPtr, HWND receiveFocus)
 387 {
 388     infoPtr->bFocus = FALSE;
 389     DestroyCaret ();
 390
 391     return 0;
 392 }
 393
 394
 395 static LRESULT
 396 HOTKEY_LButtonDown (const HOTKEY_INFO *infoPtr)
 397 {
 398     if (!(GetWindowLongW(infoPtr->hwndSelf, GWL_STYLE) & WS_DISABLED))
 399         SetFocus (infoPtr->hwndSelf);
 400
 401     return 0;
 402 }
 403
 404
 405 static inline LRESULT
 406 HOTKEY_NCCreate (HWND hwnd, const CREATESTRUCTW *lpcs)
 407 {
 408     HOTKEY_INFO *infoPtr;
 409     DWORD dwExStyle = GetWindowLongW (hwnd, GWL_EXSTYLE);
 410     SetWindowLongW (hwnd, GWL_EXSTYLE,
 411                     dwExStyle | WS_EX_CLIENTEDGE);
 412
 413     /* allocate memory for info structure */
 414     infoPtr = (HOTKEY_INFO *)Alloc (sizeof(HOTKEY_INFO));
 415     SetWindowLongPtrW(hwnd, 0, (DWORD_PTR)infoPtr);
 416
 417     /* initialize info structure */
 418     infoPtr->HotKey = infoPtr->InvComb = infoPtr->InvMod = infoPtr->CurrMod = 0;
 419     infoPtr->CaretPos = GetSystemMetrics(SM_CXBORDER);
 420     infoPtr->hwndSelf = hwnd;
 421     LoadStringW(COMCTL32_hModule, HKY_NONE, infoPtr->strNone, 15);
 422
 423     return DefWindowProcW (infoPtr->hwndSelf, WM_NCCREATE, 0, (LPARAM)lpcs);
 424 }
 425
 426 static LRESULT
 427 HOTKEY_SetFocus (HOTKEY_INFO *infoPtr, HWND lostFocus)
 428 {
 429     infoPtr->bFocus = TRUE;
 430
 431     CreateCaret (infoPtr->hwndSelf, NULL, 1, infoPtr->nHeight);
 432     SetCaretPos (infoPtr->CaretPos, GetSystemMetrics(SM_CYBORDER));
 433     ShowCaret (infoPtr->hwndSelf);
 434
 435     return 0;
 436 }
 437
 438
 439 static LRESULT
 440 HOTKEY_SetFont (HOTKEY_INFO *infoPtr, HFONT hFont, BOOL redraw)
 441 {
 442     TEXTMETRICW tm;
 443     HDC hdc;
 444     HFONT hOldFont = 0;
 445
 446     infoPtr->hFont = hFont;
 447
 448     hdc = GetDC (infoPtr->hwndSelf);
 449     if (infoPtr->hFont)
 450         hOldFont = SelectObject (hdc, infoPtr->hFont);
 451
 452     GetTextMetricsW (hdc, &tm);
 453     infoPtr->nHeight = tm.tmHeight;
 454
 455     if (infoPtr->hFont)
 456         SelectObject (hdc, hOldFont);
 457     ReleaseDC (infoPtr->hwndSelf, hdc);
 458
 459     if (redraw)
 460         InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
 461
 462     return 0;
 463 }
 464
 465 static LRESULT WINAPI
 466 HOTKEY_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 467 {
 468     HOTKEY_INFO *infoPtr = (HOTKEY_INFO *)GetWindowLongPtrW (hwnd, 0);
 469     TRACE("hwnd=%p msg=%x wparam=%lx lparam=%lx\n", hwnd, uMsg, wParam, lParam);
 470     if (!infoPtr && (uMsg != WM_NCCREATE))
 471         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
 472     switch (uMsg)
 473     {
 474         case HKM_GETHOTKEY:
 475             return HOTKEY_GetHotKey (infoPtr);
 476         case HKM_SETHOTKEY:
 477             HOTKEY_SetHotKey (infoPtr, (WORD)wParam);
 478             break;
 479         case HKM_SETRULES:
 480             HOTKEY_SetRules (infoPtr, (WORD)wParam, (WORD)lParam);
 481             break;
 482
 483         case WM_CHAR:
 484         case WM_SYSCHAR:
 485             return HOTKEY_KeyDown (infoPtr, MapVirtualKeyW(LOBYTE(HIWORD(lParam)), 1), lParam);
 486
 487         case WM_CREATE:
 488             return HOTKEY_Create (infoPtr, (LPCREATESTRUCTW)lParam);
 489
 490         case WM_DESTROY:
 491             return HOTKEY_Destroy (infoPtr);
 492
 493         case WM_ERASEBKGND:
 494             return HOTKEY_EraseBackground (infoPtr, (HDC)wParam);
 495
 496         case WM_GETDLGCODE:
 497             return DLGC_WANTCHARS | DLGC_WANTARROWS;
 498
 499         case WM_GETFONT:
 500             return HOTKEY_GetFont (infoPtr);
 501
 502         case WM_KEYDOWN:
 503         case WM_SYSKEYDOWN:
 504             return HOTKEY_KeyDown (infoPtr, wParam, lParam);
 505
 506         case WM_KEYUP:
 507         case WM_SYSKEYUP:
 508             return HOTKEY_KeyUp (infoPtr, wParam, lParam);
 509
 510         case WM_KILLFOCUS:
 511             return HOTKEY_KillFocus (infoPtr, (HWND)wParam);
 512
 513         case WM_LBUTTONDOWN:
 514             return HOTKEY_LButtonDown (infoPtr);
 515
 516         case WM_NCCREATE:
 517             return HOTKEY_NCCreate (hwnd, (LPCREATESTRUCTW)lParam);
 518
 519         case WM_PRINTCLIENT:
 520         case WM_PAINT:
 521             HOTKEY_Paint(infoPtr, (HDC)wParam);
 522             return 0;
 523
 524         case WM_SETFOCUS:
 525             return HOTKEY_SetFocus (infoPtr, (HWND)wParam);
 526
 527         case WM_SETFONT:
 528             return HOTKEY_SetFont (infoPtr, (HFONT)wParam, LOWORD(lParam));
 529
 530         default:
 531             if ((uMsg >= WM_USER) && (uMsg < WM_APP))
 532                 ERR("unknown msg %04x wp=%08lx lp=%08lx\n",
 533                      uMsg, wParam, lParam);
 534             return DefWindowProcW (hwnd, uMsg, wParam, lParam);
 535     }
 536     return 0;
 537 }
 538
 539
 540 void
 541 HOTKEY_Register (void)
 542 {
 543     WNDCLASSW wndClass;
 544
 545     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
 546     wndClass.style         = CS_GLOBALCLASS;
 547     wndClass.lpfnWndProc   = HOTKEY_WindowProc;
 548     wndClass.cbClsExtra    = 0;
 549     wndClass.cbWndExtra    = sizeof(HOTKEY_INFO *);
 550     wndClass.hCursor       = 0;
 551     wndClass.hbrBackground = 0;
 552     wndClass.lpszClassName = HOTKEY_CLASSW;
 553
 554     RegisterClassW (&wndClass);
 555 }
 556
 557
 558 void
 559 HOTKEY_Unregister (void)
 560 {
 561     UnregisterClassW (HOTKEY_CLASSW, NULL);
 562 }