controls/button.c

   1 /* File: button.c -- Button type widgets
   2  *
   3  * Copyright (C) 1993 Johannes Ruscheinski
   4  * Copyright (C) 1993 David Metcalfe
   5  * Copyright (C) 1994 Alexandre Julliard
   6  */
   7
   8 #include "win.h"
   9 #include "user.h"
  10 #include "syscolor.h"
  11 #include "graphics.h"
  12 #include "button.h"
  13 #include "stackframe.h"
  14
  15 extern void DEFWND_SetText( HWND hwnd, LPSTR text );  /* windows/defwnd.c */
  16
  17 static void PB_Paint( HWND hWnd, HDC hDC, WORD action );
  18 static void CB_Paint( HWND hWnd, HDC hDC, WORD action );
  19 static void GB_Paint( HWND hWnd, HDC hDC, WORD action );
  20 static void UB_Paint( HWND hWnd, HDC hDC, WORD action );
  21 static void OB_Paint( HWND hWnd, HDC hDC, WORD action );
  22 static void BUTTON_CheckAutoRadioButton(HWND hWnd);
  23
  24
  25 #define MAX_BTN_TYPE  12
  26
  27 static WORD maxCheckState[MAX_BTN_TYPE] =
  28 {
  29     BUTTON_UNCHECKED,   /* BS_PUSHBUTTON */
  30     BUTTON_UNCHECKED,   /* BS_DEFPUSHBUTTON */
  31     BUTTON_CHECKED,     /* BS_CHECKBOX */
  32     BUTTON_CHECKED,     /* BS_AUTOCHECKBOX */
  33     BUTTON_CHECKED,     /* BS_RADIOBUTTON */
  34     BUTTON_3STATE,      /* BS_3STATE */
  35     BUTTON_3STATE,      /* BS_AUTO3STATE */
  36     BUTTON_UNCHECKED,   /* BS_GROUPBOX */
  37     BUTTON_UNCHECKED,   /* BS_USERBUTTON */
  38     BUTTON_CHECKED,     /* BS_AUTORADIOBUTTON */
  39     BUTTON_UNCHECKED,   /* Not defined */
  40     BUTTON_UNCHECKED    /* BS_OWNERDRAW */
  41 };
  42
  43 typedef void (*pfPaint)(HWND,HDC,WORD);
  44
  45 static pfPaint btnPaintFunc[MAX_BTN_TYPE] =
  46 {
  47     PB_Paint,    /* BS_PUSHBUTTON */
  48     PB_Paint,    /* BS_DEFPUSHBUTTON */
  49     CB_Paint,    /* BS_CHECKBOX */
  50     CB_Paint,    /* BS_AUTOCHECKBOX */
  51     CB_Paint,    /* BS_RADIOBUTTON */
  52     CB_Paint,    /* BS_3STATE */
  53     CB_Paint,    /* BS_AUTO3STATE */
  54     GB_Paint,    /* BS_GROUPBOX */
  55     UB_Paint,    /* BS_USERBUTTON */
  56     CB_Paint,    /* BS_AUTORADIOBUTTON */
  57     NULL,        /* Not defined */
  58     OB_Paint     /* BS_OWNERDRAW */
  59 };
  60
  61 #define PAINT_BUTTON(hwnd,style,action) \
  62      if (btnPaintFunc[style]) { \
  63          HDC hdc = GetDC( hwnd ); \
  64          (btnPaintFunc[style])(hwnd,hdc,action); \
  65          ReleaseDC( hwnd, hdc ); }
  66
  67 static HBITMAP hbitmapCheckBoxes = 0;
  68 static WORD checkBoxWidth = 0, checkBoxHeight = 0;
  69
  70
  71 LRESULT ButtonWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
  72 {
  73         RECT rect;
  74         POINT pt;
  75         LONG lResult = 0;
  76         WND *wndPtr = WIN_FindWndPtr(hWnd);
  77         LONG style = wndPtr->dwStyle & 0x0000000F;
  78         BUTTONINFO *infoPtr = (BUTTONINFO *)wndPtr->wExtra;
  79
  80         switch (uMsg) {
  81         case WM_GETDLGCODE:
  82                 switch(style)
  83                 {
  84                 case BS_PUSHBUTTON:
  85                     return DLGC_BUTTON | DLGC_UNDEFPUSHBUTTON;
  86                 case BS_DEFPUSHBUTTON:
  87                     return DLGC_BUTTON | DLGC_DEFPUSHBUTTON;
  88                 case BS_RADIOBUTTON:
  89                 case BS_AUTORADIOBUTTON:
  90                     return DLGC_BUTTON | DLGC_RADIOBUTTON;
  91                 default:
  92                     return DLGC_BUTTON;
  93                 }
  94
  95         case WM_ENABLE:
  96                 PAINT_BUTTON( hWnd, style, ODA_DRAWENTIRE );
  97                 break;
  98
  99         case WM_CREATE:
 100                 if (!hbitmapCheckBoxes)
 101                 {
 102                     BITMAP bmp;
 103                     hbitmapCheckBoxes = LoadBitmap( 0, MAKEINTRESOURCE(OBM_CHECKBOXES) );
 104                     GetObject( hbitmapCheckBoxes, sizeof(bmp), (LPSTR)&bmp );
 105                     checkBoxWidth  = bmp.bmWidth / 4;
 106                     checkBoxHeight = bmp.bmHeight / 3;
 107                 }
 108
 109                 if (style < 0L || style >= MAX_BTN_TYPE)
 110                     lResult = -1L;
 111                 else
 112                 {
 113                     infoPtr->state = BUTTON_UNCHECKED;
 114                     infoPtr->hFont = 0;
 115                     lResult = 0L;
 116                 }
 117                 break;
 118
 119         case WM_ERASEBKGND:
 120                 break;
 121
 122         case WM_PAINT:
 123                 if (btnPaintFunc[style])
 124                 {
 125                     PAINTSTRUCT ps;
 126                     HDC hdc = BeginPaint( hWnd, &ps );
 127                     (btnPaintFunc[style])( hWnd, hdc, ODA_DRAWENTIRE );
 128                     ReleaseDC( hWnd, hdc );
 129                 }
 130                 break;
 131
 132         case WM_LBUTTONDOWN:
 133                 SendMessage( hWnd, BM_SETSTATE, TRUE, 0 );
 134                 SetFocus( hWnd );
 135                 SetCapture( hWnd );
 136                 break;
 137
 138         case WM_LBUTTONUP:
 139                 ReleaseCapture();
 140                 if (!(infoPtr->state & BUTTON_HIGHLIGHTED)) break;
 141                 SendMessage( hWnd, BM_SETSTATE, FALSE, 0 );
 142                 GetClientRect( hWnd, &rect );
 143                 pt.x = LOWORD(lParam);
 144                 pt.y = HIWORD(lParam);
 145                 if (PtInRect( &rect, pt ))
 146                 {
 147                     switch(style)
 148                     {
 149                     case BS_AUTOCHECKBOX:
 150                         SendMessage( hWnd, BM_SETCHECK,
 151                                     !(infoPtr->state & BUTTON_CHECKED), 0 );
 152                         break;
 153                     case BS_AUTORADIOBUTTON:
 154                         SendMessage( hWnd, BM_SETCHECK, TRUE, 0 );
 155                         break;
 156                     case BS_AUTO3STATE:
 157                         SendMessage( hWnd, BM_SETCHECK,
 158                                      (infoPtr->state & BUTTON_3STATE) ? 0 :
 159                                      ((infoPtr->state & 3) + 1), 0 );
 160                         break;
 161                     }
 162 #ifdef WINELIB32
 163                     SendMessage( GetParent(hWnd), WM_COMMAND,
 164                                  MAKEWPARAM(wndPtr->wIDmenu,BN_CLICKED),
 165                                  (LPARAM) hWnd );
 166 #else
 167                     SendMessage( GetParent(hWnd), WM_COMMAND,
 168                                  wndPtr->wIDmenu, MAKELPARAM(hWnd,BN_CLICKED));
 169 #endif
 170                 }
 171                 break;
 172
 173         case WM_MOUSEMOVE:
 174                 if (GetCapture() == hWnd)
 175                 {
 176                     GetClientRect( hWnd, &rect );
 177                     pt.x = LOWORD(lParam);
 178                     pt.y = HIWORD(lParam);
 179                     if (PtInRect( &rect, pt) )
 180                        SendMessage( hWnd, BM_SETSTATE, TRUE, 0 );
 181                     else SendMessage( hWnd, BM_SETSTATE, FALSE, 0 );
 182                 }
 183                 break;
 184
 185         case WM_NCHITTEST:
 186                 if(style == BS_GROUPBOX) return HTTRANSPARENT;
 187                 lResult = DefWindowProc(hWnd, uMsg, wParam, lParam);
 188                 break;
 189
 190         case WM_SETTEXT:
 191                 DEFWND_SetText( hWnd, (LPSTR)PTR_SEG_TO_LIN(lParam) );
 192                 PAINT_BUTTON( hWnd, style, ODA_DRAWENTIRE );
 193                 return 0;
 194
 195         case WM_SETFONT:
 196                 infoPtr->hFont = (HFONT) wParam;
 197                 if (lParam)
 198                     PAINT_BUTTON( hWnd, style, ODA_DRAWENTIRE );
 199                 break;
 200
 201         case WM_GETFONT:
 202                 return (LONG) infoPtr->hFont;
 203
 204         case WM_SETFOCUS:
 205                 infoPtr->state |= BUTTON_HASFOCUS;
 206                 PAINT_BUTTON( hWnd, style, ODA_FOCUS );
 207                 break;
 208
 209         case WM_KILLFOCUS:
 210                 infoPtr->state &= ~BUTTON_HASFOCUS;
 211                 PAINT_BUTTON( hWnd, style, ODA_FOCUS );
 212                 break;
 213
 214         case WM_SYSCOLORCHANGE:
 215                 InvalidateRect(hWnd, NULL, FALSE);
 216                 break;
 217
 218         case BM_SETSTYLE:
 219                 if ((wParam & 0x0f) >= MAX_BTN_TYPE) break;
 220                 wndPtr->dwStyle = (wndPtr->dwStyle & 0xfffffff0)
 221                                    | (wParam & 0x0000000f);
 222                 style = wndPtr->dwStyle & 0x0000000f;
 223                 PAINT_BUTTON( hWnd, style, ODA_DRAWENTIRE );
 224                 break;
 225
 226         case BM_GETCHECK:
 227                 lResult = infoPtr->state & 3;
 228                 break;
 229
 230         case BM_SETCHECK:
 231                 if (wParam > maxCheckState[style])
 232                     wParam = maxCheckState[style];
 233                 if ((infoPtr->state & 3) != wParam)
 234                 {
 235                     infoPtr->state = (infoPtr->state & ~3) | wParam;
 236                     PAINT_BUTTON( hWnd, style, ODA_SELECT );
 237                 }
 238                 if(style == BS_AUTORADIOBUTTON && wParam==BUTTON_CHECKED)
 239                         BUTTON_CheckAutoRadioButton(hWnd);
 240                 break;
 241
 242         case BM_GETSTATE:
 243                 lResult = infoPtr->state;
 244                 break;
 245
 246         case BM_SETSTATE:
 247                 if (!wParam != !(infoPtr->state & BUTTON_HIGHLIGHTED))
 248                 {
 249                     if (wParam) infoPtr->state |= BUTTON_HIGHLIGHTED;
 250                     else infoPtr->state &= ~BUTTON_HIGHLIGHTED;
 251                     PAINT_BUTTON( hWnd, style, ODA_SELECT );
 252                 }
 253                 break;
 254
 255         default:
 256                 lResult = DefWindowProc(hWnd, uMsg, wParam, lParam);
 257                 break;
 258         }
 259
 260         return lResult;
 261 }
 262
 263
 264 /**********************************************************************
 265  *       Push Button Functions
 266  */
 267
 268 static void PB_Paint( HWND hButton, HDC hDC, WORD action )
 269 {
 270     RECT rc;
 271     HPEN hOldPen;
 272     HBRUSH hOldBrush;
 273     char *text;
 274     DWORD dwTextSize;
 275     TEXTMETRIC tm;
 276     WND *wndPtr = WIN_FindWndPtr( hButton );
 277     BUTTONINFO *infoPtr = (BUTTONINFO *)wndPtr->wExtra;
 278
 279     GetClientRect(hButton, &rc);
 280
 281       /* Send WM_CTLCOLOR to allow changing the font (the colors are fixed) */
 282     if (infoPtr->hFont) SelectObject( hDC, infoPtr->hFont );
 283 #ifdef WINELIB32
 284     SendMessage( GetParent(hButton), WM_CTLCOLORBTN,
 285                  (WPARAM)hDC, (LPARAM)hButton );
 286 #else
 287     SendMessage( GetParent(hButton), WM_CTLCOLOR, (WORD)hDC,
 288                  MAKELPARAM(hButton, CTLCOLOR_BTN) );
 289 #endif
 290     hOldPen = (HPEN)SelectObject(hDC, sysColorObjects.hpenWindowFrame);
 291     hOldBrush = (HBRUSH)SelectObject(hDC, sysColorObjects.hbrushBtnFace);
 292     SetBkMode(hDC, TRANSPARENT);
 293     Rectangle(hDC, rc.left, rc.top, rc.right, rc.bottom);
 294     if (action == ODA_DRAWENTIRE)
 295     {
 296         SetPixel( hDC, rc.left, rc.top, GetSysColor(COLOR_WINDOW) );
 297         SetPixel( hDC, rc.left, rc.bottom-1, GetSysColor(COLOR_WINDOW) );
 298         SetPixel( hDC, rc.right-1, rc.top, GetSysColor(COLOR_WINDOW) );
 299         SetPixel( hDC, rc.right-1, rc.bottom-1, GetSysColor(COLOR_WINDOW) );
 300     }
 301     InflateRect( &rc, -1, -1 );
 302
 303     if ((wndPtr->dwStyle & 0x000f) == BS_DEFPUSHBUTTON)
 304     {
 305         Rectangle(hDC, rc.left, rc.top, rc.right, rc.bottom);
 306         InflateRect( &rc, -1, -1 );
 307     }
 308
 309     if (infoPtr->state & BUTTON_HIGHLIGHTED)
 310     {
 311         /* draw button shadow: */
 312         SelectObject(hDC, sysColorObjects.hbrushBtnShadow );
 313         PatBlt(hDC, rc.left, rc.top, 1, rc.bottom-rc.top, PATCOPY );
 314         PatBlt(hDC, rc.left, rc.top, rc.right-rc.left, 1, PATCOPY );
 315         rc.left += 2;  /* To position the text down and right */
 316         rc.top  += 2;
 317     }
 318     else GRAPH_DrawReliefRect( hDC, &rc, 2, 2, FALSE );
 319
 320     /* draw button label, if any: */
 321     text = (char*) USER_HEAP_LIN_ADDR( wndPtr->hText );
 322     if (text && text[0])
 323     {
 324         SetTextColor( hDC, (wndPtr->dwStyle & WS_DISABLED) ?
 325                      GetSysColor(COLOR_GRAYTEXT) : GetSysColor(COLOR_BTNTEXT));
 326         DrawText(hDC, text, -1, &rc,
 327                  DT_SINGLELINE | DT_CENTER | DT_VCENTER);
 328         /* do we have the focus? */
 329         if (infoPtr->state & BUTTON_HASFOCUS)
 330         {
 331             short xdelta, ydelta;
 332             dwTextSize = GetTextExtent( hDC, text, strlen(text) );
 333             GetTextMetrics( hDC, &tm );
 334             xdelta = ((rc.right - rc.left) - LOWORD(dwTextSize) - 1) / 2;
 335             ydelta = ((rc.bottom - rc.top) - tm.tmHeight - 1) / 2;
 336             if (xdelta < 0) xdelta = 0;
 337             if (ydelta < 0) ydelta = 0;
 338             InflateRect( &rc, -xdelta, -ydelta );
 339             DrawFocusRect( hDC, &rc );
 340         }
 341     }
 342
 343     SelectObject(hDC, (HANDLE)hOldPen);
 344     SelectObject(hDC, (HANDLE)hOldBrush);
 345 }
 346
 347
 348 /**********************************************************************
 349  *       Check Box & Radio Button Functions
 350  */
 351
 352 static void CB_Paint( HWND hWnd, HDC hDC, WORD action )
 353 {
 354     RECT rc;
 355     HBRUSH hBrush;
 356     int textlen, delta, x, y;
 357     char *text;
 358     TEXTMETRIC tm;
 359     SIZE size;
 360     WND *wndPtr = WIN_FindWndPtr(hWnd);
 361     BUTTONINFO *infoPtr = (BUTTONINFO *)wndPtr->wExtra;
 362
 363     GetClientRect(hWnd, &rc);
 364
 365     if (infoPtr->hFont) SelectObject( hDC, infoPtr->hFont );
 366 #ifdef WINELIB32 /* JBP: Different in Win32 */
 367     hBrush = (HBRUSH) SendMessage(GetParent(hWnd), WM_CTLCOLORBTN, (WPARAM)hDC,
 368                                   (LPARAM)hWnd);
 369 #else
 370     hBrush = SendMessage(GetParent(hWnd), WM_CTLCOLOR, (WORD)hDC,
 371                          MAKELPARAM(hWnd, CTLCOLOR_BTN));
 372 #endif
 373     if (action == ODA_DRAWENTIRE) FillRect(hDC, &rc, hBrush);
 374
 375     GetTextMetrics(hDC, &tm);
 376     delta = (rc.bottom - rc.top - tm.tmHeight) >> 1;
 377
 378       /* Draw the check-box bitmap */
 379     x = y = 0;
 380     if (infoPtr->state & BUTTON_HIGHLIGHTED) x += 2 * checkBoxWidth;
 381     if (infoPtr->state & (BUTTON_CHECKED | BUTTON_3STATE)) x += checkBoxWidth;
 382     if (((wndPtr->dwStyle & 0x0f) == BS_RADIOBUTTON) ||
 383         ((wndPtr->dwStyle & 0x0f) == BS_AUTORADIOBUTTON)) y += checkBoxHeight;
 384     else if (infoPtr->state & BUTTON_3STATE) y += 2 * checkBoxHeight;
 385     GRAPH_DrawBitmap( hDC, hbitmapCheckBoxes, rc.left, rc.top + delta,
 386                       x, y, checkBoxWidth, checkBoxHeight );
 387     rc.left += checkBoxWidth + tm.tmAveCharWidth / 2;
 388
 389     if (!(text = (char*) USER_HEAP_LIN_ADDR( wndPtr->hText ))) return;
 390     textlen = strlen( text );
 391
 392     if (action == ODA_DRAWENTIRE)
 393     {
 394         if (wndPtr->dwStyle & WS_DISABLED)
 395             SetTextColor( hDC, GetSysColor(COLOR_GRAYTEXT) );
 396         DrawText(hDC, text, textlen, &rc, DT_SINGLELINE | DT_VCENTER);
 397     }
 398
 399     if ((action == ODA_FOCUS) ||
 400         ((action == ODA_DRAWENTIRE) && (infoPtr->state & BUTTON_HASFOCUS)))
 401     {
 402         GetTextExtentPoint(hDC, text, textlen, &size);
 403         if (delta > 1)
 404         {
 405             rc.top += delta - 1;
 406             rc.bottom -= delta + 1;
 407         }
 408         rc.left--;
 409         rc.right = MIN( rc.left + size.cx + 2, rc.right );
 410         DrawFocusRect(hDC, &rc);
 411     }
 412 }
 413
 414
 415 /**********************************************************************
 416  *       BUTTON_CheckAutoRadioButton
 417  *
 418  * hWnd is checked, uncheck everything else in group
 419  */
 420 static void BUTTON_CheckAutoRadioButton(HWND hWnd)
 421 {
 422     HWND parent = GetParent(hWnd);
 423     HWND sibling;
 424     for(sibling = GetNextDlgGroupItem(parent,hWnd,FALSE);
 425         sibling != hWnd;
 426         sibling = GetNextDlgGroupItem(parent,sibling,FALSE))
 427             SendMessage(sibling,BM_SETCHECK,BUTTON_UNCHECKED,0);
 428 }
 429
 430
 431 /**********************************************************************
 432  *       Group Box Functions
 433  */
 434
 435 static void GB_Paint( HWND hWnd, HDC hDC, WORD action )
 436 {
 437     RECT rc;
 438     char *text;
 439     SIZE size;
 440     WND *wndPtr = WIN_FindWndPtr( hWnd );
 441     BUTTONINFO *infoPtr = (BUTTONINFO *)wndPtr->wExtra;
 442
 443     if (action != ODA_DRAWENTIRE) return;
 444
 445     if (infoPtr->hFont) SelectObject( hDC, infoPtr->hFont );
 446 #ifdef WINELIB32
 447     SendMessage( GetParent(hWnd), WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hWnd );
 448 #else
 449     SendMessage( GetParent(hWnd), WM_CTLCOLOR, (WORD)hDC,
 450                  MAKELPARAM(hWnd, CTLCOLOR_BTN));
 451 #endif
 452     SelectObject( hDC, sysColorObjects.hpenWindowFrame );
 453
 454     GetClientRect(hWnd, &rc);
 455
 456     MoveTo( hDC, rc.left, rc.top+2 );
 457     LineTo( hDC, rc.right-1, rc.top+2 );
 458     LineTo( hDC, rc.right-1, rc.bottom-1 );
 459     LineTo( hDC, rc.left, rc.bottom-1 );
 460     LineTo( hDC, rc.left, rc.top+2 );
 461
 462     if (!(text = (char*) USER_HEAP_LIN_ADDR( wndPtr->hText ))) return;
 463     GetTextExtentPoint(hDC, text, strlen(text), &size);
 464     rc.left  += 10;
 465     rc.right  = rc.left + size.cx + 1;
 466     rc.bottom = size.cy;
 467     if (wndPtr->dwStyle & WS_DISABLED)
 468         SetTextColor( hDC, GetSysColor(COLOR_GRAYTEXT) );
 469     DrawText(hDC, text, -1, &rc, DT_SINGLELINE );
 470 }
 471
 472
 473 /**********************************************************************
 474  *       User Button Functions
 475  */
 476
 477 static void UB_Paint( HWND hWnd, HDC hDC, WORD action )
 478 {
 479     RECT rc;
 480     HBRUSH hBrush;
 481     WND *wndPtr = WIN_FindWndPtr( hWnd );
 482     BUTTONINFO *infoPtr = (BUTTONINFO *)wndPtr->wExtra;
 483
 484     if (action == ODA_SELECT) return;
 485
 486     GetClientRect(hWnd, &rc);
 487
 488     if (infoPtr->hFont) SelectObject( hDC, infoPtr->hFont );
 489 #ifdef WINELIB32
 490     hBrush = (HBRUSH) SendMessage(GetParent(hWnd), WM_CTLCOLORBTN, (WPARAM)hDC,
 491                                   (LPARAM)hWnd);
 492 #else
 493     hBrush = SendMessage(GetParent(hWnd), WM_CTLCOLOR, (WORD)hDC,
 494                          MAKELPARAM(hWnd, CTLCOLOR_BTN));
 495 #endif
 496     FillRect(hDC, &rc, hBrush);
 497
 498     if ((action == ODA_FOCUS) ||
 499         ((action == ODA_DRAWENTIRE) && (infoPtr->state & BUTTON_HASFOCUS)))
 500         DrawFocusRect(hDC, &rc);
 501 }
 502
 503
 504 /**********************************************************************
 505  *       Ownerdrawn Button Functions
 506  */
 507
 508 static void OB_Paint( HWND hWnd, HDC hDC, WORD action )
 509 {
 510     DRAWITEMSTRUCT dis;
 511     WND *wndPtr = WIN_FindWndPtr( hWnd );
 512     BUTTONINFO *infoPtr = (BUTTONINFO *)wndPtr->wExtra;
 513
 514     dis.CtlType    = ODT_BUTTON;
 515     dis.CtlID      = wndPtr->wIDmenu;
 516     dis.itemID     = 0;
 517     dis.itemAction = action;
 518     dis.itemState  = (infoPtr->state & BUTTON_HASFOCUS) ? ODS_FOCUS : 0 |
 519                      (infoPtr->state & BUTTON_HIGHLIGHTED) ? ODS_SELECTED : 0 |
 520                      (wndPtr->dwStyle & WS_DISABLED) ? ODS_DISABLED : 0;
 521     dis.hwndItem   = hWnd;
 522     dis.hDC        = hDC;
 523     GetClientRect( hWnd, &dis.rcItem );
 524     dis.itemData   = 0;
 525     SendMessage(GetParent(hWnd), WM_DRAWITEM, 1, (LPARAM) MAKE_SEGPTR(&dis) );
 526 }