mdw@git.distorted.org.uk Git - sgt/puzzles/blob - windows.c

   1 /*
   2  * windows.c: Windows front end for my puzzle collection.
   3  *
   4  * TODO:
   5  *
   6  *  - Figure out what to do if a puzzle requests a size bigger than
   7  *    the screen will take. In principle we could put scrollbars in
   8  *    the window, although that would be pretty horrid. Another
   9  *    option is to detect in advance that this will be a problem -
  10  *    we can probably tell this using midend_size() before actually
  11  *    generating the puzzle - and simply refuse to do it.
  12  */
  13
  14 #include <windows.h>
  15 #include <commctrl.h>
  16
  17 #include <stdio.h>
  18 #include <assert.h>
  19 #include <ctype.h>
  20 #include <stdarg.h>
  21 #include <stdlib.h>
  22 #include <time.h>
  23
  24 #include "puzzles.h"
  25
  26 #define IDM_NEW       0x0010
  27 #define IDM_RESTART   0x0020
  28 #define IDM_UNDO      0x0030
  29 #define IDM_REDO      0x0040
  30 #define IDM_COPY      0x0050
  31 #define IDM_SOLVE     0x0060
  32 #define IDM_QUIT      0x0070
  33 #define IDM_CONFIG    0x0080
  34 #define IDM_SEED      0x0090
  35 #define IDM_HELPC     0x00A0
  36 #define IDM_GAMEHELP  0x00B0
  37 #define IDM_PRESETS   0x0100
  38
  39 #define HELP_FILE_NAME  "puzzles.hlp"
  40 #define HELP_CNT_NAME   "puzzles.cnt"
  41
  42 #ifdef DEBUG
  43 static FILE *debug_fp = NULL;
  44 static HANDLE debug_hdl = INVALID_HANDLE_VALUE;
  45 static int debug_got_console = 0;
  46
  47 void dputs(char *buf)
  48 {
  49     DWORD dw;
  50
  51     if (!debug_got_console) {
  52         if (AllocConsole()) {
  53             debug_got_console = 1;
  54             debug_hdl = GetStdHandle(STD_OUTPUT_HANDLE);
  55         }
  56     }
  57     if (!debug_fp) {
  58         debug_fp = fopen("debug.log", "w");
  59     }
  60
  61     if (debug_hdl != INVALID_HANDLE_VALUE) {
  62         WriteFile(debug_hdl, buf, strlen(buf), &dw, NULL);
  63     }
  64     fputs(buf, debug_fp);
  65     fflush(debug_fp);
  66 }
  67
  68 void debug_printf(char *fmt, ...)
  69 {
  70     char buf[4096];
  71     va_list ap;
  72
  73     va_start(ap, fmt);
  74     vsprintf(buf, fmt, ap);
  75     dputs(buf);
  76     va_end(ap);
  77 }
  78
  79 #define debug(x) (debug_printf x)
  80
  81 #else
  82
  83 #define debug(x)
  84
  85 #endif
  86
  87 struct font {
  88     HFONT font;
  89     int type;
  90     int size;
  91 };
  92
  93 struct cfg_aux {
  94     int ctlid;
  95 };
  96
  97 struct frontend {
  98     midend_data *me;
  99     HWND hwnd, statusbar, cfgbox;
 100     HINSTANCE inst;
 101     HBITMAP bitmap, prevbm;
 102     HDC hdc_bm;
 103     COLORREF *colours;
 104     HBRUSH *brushes;
 105     HPEN *pens;
 106     HRGN clip;
 107     UINT timer;
 108     DWORD timer_last_tickcount;
 109     int npresets;
 110     game_params **presets;
 111     struct font *fonts;
 112     int nfonts, fontsize;
 113     config_item *cfg;
 114     struct cfg_aux *cfgaux;
 115     int cfg_which, cfg_done;
 116     HFONT cfgfont;
 117     char *help_path;
 118     int help_has_contents;
 119 };
 120
 121 void fatal(char *fmt, ...)
 122 {
 123     char buf[2048];
 124     va_list ap;
 125
 126     va_start(ap, fmt);
 127     vsprintf(buf, fmt, ap);
 128     va_end(ap);
 129
 130     MessageBox(NULL, buf, "Fatal error", MB_ICONEXCLAMATION | MB_OK);
 131
 132     exit(1);
 133 }
 134
 135 void get_random_seed(void **randseed, int *randseedsize)
 136 {
 137     time_t *tp = snew(time_t);
 138     time(tp);
 139     *randseed = (void *)tp;
 140     *randseedsize = sizeof(time_t);
 141 }
 142
 143 void status_bar(frontend *fe, char *text)
 144 {
 145     SetWindowText(fe->statusbar, text);
 146 }
 147
 148 void frontend_default_colour(frontend *fe, float *output)
 149 {
 150     DWORD c = GetSysColor(COLOR_MENU); /* ick */
 151
 152     output[0] = (float)(GetRValue(c) / 255.0);
 153     output[1] = (float)(GetGValue(c) / 255.0);
 154     output[2] = (float)(GetBValue(c) / 255.0);
 155 }
 156
 157 void clip(frontend *fe, int x, int y, int w, int h)
 158 {
 159     IntersectClipRect(fe->hdc_bm, x, y, x+w, y+h);
 160 }
 161
 162 void unclip(frontend *fe)
 163 {
 164     SelectClipRgn(fe->hdc_bm, NULL);
 165 }
 166
 167 void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
 168                int align, int colour, char *text)
 169 {
 170     int i;
 171
 172     /*
 173      * Find or create the font.
 174      */
 175     for (i = 0; i < fe->nfonts; i++)
 176         if (fe->fonts[i].type == fonttype && fe->fonts[i].size == fontsize)
 177             break;
 178
 179     if (i == fe->nfonts) {
 180         if (fe->fontsize <= fe->nfonts) {
 181             fe->fontsize = fe->nfonts + 10;
 182             fe->fonts = sresize(fe->fonts, fe->fontsize, struct font);
 183         }
 184
 185         fe->nfonts++;
 186
 187         fe->fonts[i].type = fonttype;
 188         fe->fonts[i].size = fontsize;
 189
 190         fe->fonts[i].font = CreateFont(-fontsize, 0, 0, 0, FW_BOLD,
 191                                        FALSE, FALSE, FALSE, DEFAULT_CHARSET,
 192                                        OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
 193                                        DEFAULT_QUALITY,
 194                                        (fonttype == FONT_FIXED ?
 195                                         FIXED_PITCH | FF_DONTCARE :
 196                                         VARIABLE_PITCH | FF_SWISS),
 197                                        NULL);
 198     }
 199
 200     /*
 201      * Position and draw the text.
 202      */
 203     {
 204         HFONT oldfont;
 205         TEXTMETRIC tm;
 206         SIZE size;
 207
 208         oldfont = SelectObject(fe->hdc_bm, fe->fonts[i].font);
 209         if (GetTextMetrics(fe->hdc_bm, &tm)) {
 210             if (align & ALIGN_VCENTRE)
 211                 y -= (tm.tmAscent+tm.tmDescent)/2;
 212             else
 213                 y -= tm.tmAscent;
 214         }
 215         if (GetTextExtentPoint32(fe->hdc_bm, text, strlen(text), &size)) {
 216             if (align & ALIGN_HCENTRE)
 217                 x -= size.cx / 2;
 218             else if (align & ALIGN_HRIGHT)
 219                 x -= size.cx;
 220         }
 221         SetBkMode(fe->hdc_bm, TRANSPARENT);
 222         SetTextColor(fe->hdc_bm, fe->colours[colour]);
 223         TextOut(fe->hdc_bm, x, y, text, strlen(text));
 224         SelectObject(fe->hdc_bm, oldfont);
 225     }
 226 }
 227
 228 void draw_rect(frontend *fe, int x, int y, int w, int h, int colour)
 229 {
 230     if (w == 1 && h == 1) {
 231         /*
 232          * Rectangle() appears to get uppity if asked to draw a 1x1
 233          * rectangle, presumably on the grounds that that's beneath
 234          * its dignity and you ought to be using SetPixel instead.
 235          * So I will.
 236          */
 237         SetPixel(fe->hdc_bm, x, y, fe->colours[colour]);
 238     } else {
 239         HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[colour]);
 240         HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
 241         Rectangle(fe->hdc_bm, x, y, x+w, y+h);
 242         SelectObject(fe->hdc_bm, oldbrush);
 243         SelectObject(fe->hdc_bm, oldpen);
 244     }
 245 }
 246
 247 void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour)
 248 {
 249     HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
 250     MoveToEx(fe->hdc_bm, x1, y1, NULL);
 251     LineTo(fe->hdc_bm, x2, y2);
 252     SetPixel(fe->hdc_bm, x2, y2, fe->colours[colour]);
 253     SelectObject(fe->hdc_bm, oldpen);
 254 }
 255
 256 void draw_polygon(frontend *fe, int *coords, int npoints,
 257                   int fill, int colour)
 258 {
 259     POINT *pts = snewn(npoints+1, POINT);
 260     int i;
 261
 262     for (i = 0; i <= npoints; i++) {
 263         int j = (i < npoints ? i : 0);
 264         pts[i].x = coords[j*2];
 265         pts[i].y = coords[j*2+1];
 266     }
 267
 268     if (fill) {
 269         HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[colour]);
 270         HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
 271         Polygon(fe->hdc_bm, pts, npoints);
 272         SelectObject(fe->hdc_bm, oldbrush);
 273         SelectObject(fe->hdc_bm, oldpen);
 274     } else {
 275         HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
 276         Polyline(fe->hdc_bm, pts, npoints+1);
 277         SelectObject(fe->hdc_bm, oldpen);
 278     }
 279
 280     sfree(pts);
 281 }
 282
 283 void start_draw(frontend *fe)
 284 {
 285     HDC hdc_win;
 286     hdc_win = GetDC(fe->hwnd);
 287     fe->hdc_bm = CreateCompatibleDC(hdc_win);
 288     fe->prevbm = SelectObject(fe->hdc_bm, fe->bitmap);
 289     ReleaseDC(fe->hwnd, hdc_win);
 290     fe->clip = NULL;
 291     SetMapMode(fe->hdc_bm, MM_TEXT);
 292 }
 293
 294 void draw_update(frontend *fe, int x, int y, int w, int h)
 295 {
 296     RECT r;
 297
 298     r.left = x;
 299     r.top = y;
 300     r.right = x + w;
 301     r.bottom = y + h;
 302
 303     InvalidateRect(fe->hwnd, &r, FALSE);
 304 }
 305
 306 void end_draw(frontend *fe)
 307 {
 308     SelectObject(fe->hdc_bm, fe->prevbm);
 309     DeleteDC(fe->hdc_bm);
 310     if (fe->clip) {
 311         DeleteObject(fe->clip);
 312         fe->clip = NULL;
 313     }
 314 }
 315
 316 void deactivate_timer(frontend *fe)
 317 {
 318     KillTimer(fe->hwnd, fe->timer);
 319     fe->timer = 0;
 320 }
 321
 322 void activate_timer(frontend *fe)
 323 {
 324     if (!fe->timer) {
 325         fe->timer = SetTimer(fe->hwnd, fe->timer, 20, NULL);
 326         fe->timer_last_tickcount = GetTickCount();
 327     }
 328 }
 329
 330 void write_clip(HWND hwnd, char *data)
 331 {
 332     HGLOBAL clipdata;
 333     int len, i, j;
 334     char *data2;
 335     void *lock;
 336
 337     /*
 338      * Windows expects CRLF in the clipboard, so we must convert
 339      * any \n that has come out of the puzzle backend.
 340      */
 341     len = 0;
 342     for (i = 0; data[i]; i++) {
 343         if (data[i] == '\n')
 344             len++;
 345         len++;
 346     }
 347     data2 = snewn(len+1, char);
 348     j = 0;
 349     for (i = 0; data[i]; i++) {
 350         if (data[i] == '\n')
 351             data2[j++] = '\r';
 352         data2[j++] = data[i];
 353     }
 354     assert(j == len);
 355     data2[j] = '\0';
 356
 357     clipdata = GlobalAlloc(GMEM_DDESHARE | GMEM_MOVEABLE, len + 1);
 358     if (!clipdata)
 359         return;
 360     lock = GlobalLock(clipdata);
 361     if (!lock)
 362         return;
 363     memcpy(lock, data2, len);
 364     ((unsigned char *) lock)[len] = 0;
 365     GlobalUnlock(clipdata);
 366
 367     if (OpenClipboard(hwnd)) {
 368         EmptyClipboard();
 369         SetClipboardData(CF_TEXT, clipdata);
 370         CloseClipboard();
 371     } else
 372         GlobalFree(clipdata);
 373
 374     sfree(data2);
 375 }
 376
 377 /*
 378  * See if we can find a help file.
 379  */
 380 static void find_help_file(frontend *fe)
 381 {
 382     char b[2048], *p, *q, *r;
 383     FILE *fp;
 384     if (!fe->help_path) {
 385         GetModuleFileName(NULL, b, sizeof(b) - 1);
 386         r = b;
 387         p = strrchr(b, '\\');
 388         if (p && p >= r) r = p+1;
 389         q = strrchr(b, ':');
 390         if (q && q >= r) r = q+1;
 391         strcpy(r, HELP_FILE_NAME);
 392         if ( (fp = fopen(b, "r")) != NULL) {
 393             fe->help_path = dupstr(b);
 394             fclose(fp);
 395         } else
 396             fe->help_path = NULL;
 397         strcpy(r, HELP_CNT_NAME);
 398         if ( (fp = fopen(b, "r")) != NULL) {
 399             fe->help_has_contents = TRUE;
 400             fclose(fp);
 401         } else
 402             fe->help_has_contents = FALSE;
 403     }
 404 }
 405
 406 static frontend *new_window(HINSTANCE inst, char *game_id, char **error)
 407 {
 408     frontend *fe;
 409     int x, y;
 410     RECT r, sr;
 411     HDC hdc;
 412
 413     fe = snew(frontend);
 414
 415     fe->me = midend_new(fe, &thegame);
 416
 417     if (game_id) {
 418         *error = midend_game_id(fe->me, game_id, FALSE);
 419         if (*error) {
 420             midend_free(fe->me);
 421             sfree(fe);
 422             return NULL;
 423         }
 424     }
 425
 426     fe->help_path = NULL;
 427     find_help_file(fe);
 428
 429     fe->inst = inst;
 430     midend_new_game(fe->me);
 431     midend_size(fe->me, &x, &y);
 432
 433     fe->timer = 0;
 434
 435     fe->fonts = NULL;
 436     fe->nfonts = fe->fontsize = 0;
 437
 438     {
 439         int i, ncolours;
 440         float *colours;
 441
 442         colours = midend_colours(fe->me, &ncolours);
 443
 444         fe->colours = snewn(ncolours, COLORREF);
 445         fe->brushes = snewn(ncolours, HBRUSH);
 446         fe->pens = snewn(ncolours, HPEN);
 447
 448         for (i = 0; i < ncolours; i++) {
 449             fe->colours[i] = RGB(255 * colours[i*3+0],
 450                                  255 * colours[i*3+1],
 451                                  255 * colours[i*3+2]);
 452             fe->brushes[i] = CreateSolidBrush(fe->colours[i]);
 453             fe->pens[i] = CreatePen(PS_SOLID, 1, fe->colours[i]);
 454         }
 455     }
 456
 457     r.left = r.top = 0;
 458     r.right = x;
 459     r.bottom = y;
 460     AdjustWindowRectEx(&r, WS_OVERLAPPEDWINDOW &~
 461                        (WS_THICKFRAME | WS_MAXIMIZEBOX | WS_OVERLAPPED),
 462                        TRUE, 0);
 463
 464     fe->hwnd = CreateWindowEx(0, thegame.name, thegame.name,
 465                               WS_OVERLAPPEDWINDOW &~
 466                               (WS_THICKFRAME | WS_MAXIMIZEBOX),
 467                               CW_USEDEFAULT, CW_USEDEFAULT,
 468                               r.right - r.left, r.bottom - r.top,
 469                               NULL, NULL, inst, NULL);
 470
 471     {
 472         HMENU bar = CreateMenu();
 473         HMENU menu = CreateMenu();
 474
 475         AppendMenu(bar, MF_ENABLED|MF_POPUP, (UINT)menu, "Game");
 476         AppendMenu(menu, MF_ENABLED, IDM_NEW, "New");
 477         AppendMenu(menu, MF_ENABLED, IDM_RESTART, "Restart");
 478         AppendMenu(menu, MF_ENABLED, IDM_SEED, "Specific...");
 479
 480         if ((fe->npresets = midend_num_presets(fe->me)) > 0 ||
 481             thegame.can_configure) {
 482             HMENU sub = CreateMenu();
 483             int i;
 484
 485             AppendMenu(bar, MF_ENABLED|MF_POPUP, (UINT)sub, "Type");
 486
 487             fe->presets = snewn(fe->npresets, game_params *);
 488
 489             for (i = 0; i < fe->npresets; i++) {
 490                 char *name;
 491
 492                 midend_fetch_preset(fe->me, i, &name, &fe->presets[i]);
 493
 494                 /*
 495                  * FIXME: we ought to go through and do something
 496                  * with ampersands here.
 497                  */
 498
 499                 AppendMenu(sub, MF_ENABLED, IDM_PRESETS + 0x10 * i, name);
 500             }
 501
 502             if (thegame.can_configure) {
 503                 AppendMenu(sub, MF_ENABLED, IDM_CONFIG, "Custom...");
 504             }
 505         }
 506
 507         AppendMenu(menu, MF_SEPARATOR, 0, 0);
 508         AppendMenu(menu, MF_ENABLED, IDM_UNDO, "Undo");
 509         AppendMenu(menu, MF_ENABLED, IDM_REDO, "Redo");
 510         if (thegame.can_format_as_text) {
 511             AppendMenu(menu, MF_SEPARATOR, 0, 0);
 512             AppendMenu(menu, MF_ENABLED, IDM_COPY, "Copy");
 513         }
 514         if (thegame.can_solve) {
 515             AppendMenu(menu, MF_SEPARATOR, 0, 0);
 516             AppendMenu(menu, MF_ENABLED, IDM_SOLVE, "Solve");
 517         }
 518         AppendMenu(menu, MF_SEPARATOR, 0, 0);
 519         AppendMenu(menu, MF_ENABLED, IDM_QUIT, "Exit");
 520         if (fe->help_path) {
 521             HMENU hmenu = CreateMenu();
 522             AppendMenu(bar, MF_ENABLED|MF_POPUP, (UINT)hmenu, "Help");
 523             AppendMenu(hmenu, MF_ENABLED, IDM_HELPC, "Contents");
 524             if (thegame.winhelp_topic) {
 525                 char *item;
 526                 assert(thegame.name);
 527                 item = snewn(9+strlen(thegame.name), char); /*ick*/
 528                 sprintf(item, "Help on %s", thegame.name);
 529                 AppendMenu(hmenu, MF_ENABLED, IDM_GAMEHELP, item);
 530                 sfree(item);
 531             }
 532         }
 533         SetMenu(fe->hwnd, bar);
 534     }
 535
 536     if (midend_wants_statusbar(fe->me)) {
 537         fe->statusbar = CreateWindowEx(0, STATUSCLASSNAME, "ooh",
 538                                        WS_CHILD | WS_VISIBLE,
 539                                        0, 0, 0, 0, /* status bar does these */
 540                                        fe->hwnd, NULL, inst, NULL);
 541         GetWindowRect(fe->statusbar, &sr);
 542         SetWindowPos(fe->hwnd, NULL, 0, 0,
 543                      r.right - r.left, r.bottom - r.top + sr.bottom - sr.top,
 544                      SWP_NOMOVE | SWP_NOZORDER);
 545         SetWindowPos(fe->statusbar, NULL, 0, y, x, sr.bottom - sr.top,
 546                      SWP_NOZORDER);
 547     } else {
 548         fe->statusbar = NULL;
 549     }
 550
 551     hdc = GetDC(fe->hwnd);
 552     fe->bitmap = CreateCompatibleBitmap(hdc, x, y);
 553     ReleaseDC(fe->hwnd, hdc);
 554
 555     SetWindowLong(fe->hwnd, GWL_USERDATA, (LONG)fe);
 556
 557     ShowWindow(fe->hwnd, SW_NORMAL);
 558     SetForegroundWindow(fe->hwnd);
 559
 560     midend_redraw(fe->me);
 561
 562     return fe;
 563 }
 564
 565 static int CALLBACK ConfigDlgProc(HWND hwnd, UINT msg,
 566                                   WPARAM wParam, LPARAM lParam)
 567 {
 568     frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA);
 569     config_item *i;
 570     struct cfg_aux *j;
 571
 572     switch (msg) {
 573       case WM_INITDIALOG:
 574         return 0;
 575
 576       case WM_COMMAND:
 577         /*
 578          * OK and Cancel are special cases.
 579          */
 580         if ((HIWORD(wParam) == BN_CLICKED ||
 581              HIWORD(wParam) == BN_DOUBLECLICKED) &&
 582             (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)) {
 583             if (LOWORD(wParam) == IDOK) {
 584                 char *err = midend_set_config(fe->me, fe->cfg_which, fe->cfg);
 585
 586                 if (err) {
 587                     MessageBox(hwnd, err, "Validation error",
 588                                MB_ICONERROR | MB_OK);
 589                 } else {
 590                     fe->cfg_done = 2;
 591                 }
 592             } else {
 593                 fe->cfg_done = 1;
 594             }
 595             return 0;
 596         }
 597
 598         /*
 599          * First find the control whose id this is.
 600          */
 601         for (i = fe->cfg, j = fe->cfgaux; i->type != C_END; i++, j++) {
 602             if (j->ctlid == LOWORD(wParam))
 603                 break;
 604         }
 605         if (i->type == C_END)
 606             return 0;                  /* not our problem */
 607
 608         if (i->type == C_STRING && HIWORD(wParam) == EN_CHANGE) {
 609             char buffer[4096];
 610             GetDlgItemText(fe->cfgbox, j->ctlid, buffer, lenof(buffer));
 611             buffer[lenof(buffer)-1] = '\0';
 612             sfree(i->sval);
 613             i->sval = dupstr(buffer);
 614         } else if (i->type == C_BOOLEAN &&
 615                    (HIWORD(wParam) == BN_CLICKED ||
 616                     HIWORD(wParam) == BN_DOUBLECLICKED)) {
 617             i->ival = IsDlgButtonChecked(fe->cfgbox, j->ctlid);
 618         } else if (i->type == C_CHOICES &&
 619                    HIWORD(wParam) == CBN_SELCHANGE) {
 620             i->ival = SendDlgItemMessage(fe->cfgbox, j->ctlid,
 621                                          CB_GETCURSEL, 0, 0);
 622         }
 623
 624         return 0;
 625
 626       case WM_CLOSE:
 627         fe->cfg_done = 1;
 628         return 0;
 629     }
 630
 631     return 0;
 632 }
 633
 634 HWND mkctrl(frontend *fe, int x1, int x2, int y1, int y2,
 635             char *wclass, int wstyle,
 636             int exstyle, char *wtext, int wid)
 637 {
 638     HWND ret;
 639     ret = CreateWindowEx(exstyle, wclass, wtext,
 640                          wstyle | WS_CHILD | WS_VISIBLE, x1, y1, x2-x1, y2-y1,
 641                          fe->cfgbox, (HMENU) wid, fe->inst, NULL);
 642     SendMessage(ret, WM_SETFONT, (WPARAM)fe->cfgfont, MAKELPARAM(TRUE, 0));
 643     return ret;
 644 }
 645
 646 static int get_config(frontend *fe, int which)
 647 {
 648     config_item *i;
 649     struct cfg_aux *j;
 650     char *title;
 651     WNDCLASS wc;
 652     MSG msg;
 653     TEXTMETRIC tm;
 654     HDC hdc;
 655     HFONT oldfont;
 656     SIZE size;
 657     HWND ctl;
 658     int gm, id, nctrls;
 659     int winwidth, winheight, col1l, col1r, col2l, col2r, y;
 660     int height, width, maxlabel, maxcheckbox;
 661
 662     wc.style = CS_DBLCLKS | CS_SAVEBITS | CS_BYTEALIGNWINDOW;
 663     wc.lpfnWndProc = DefDlgProc;
 664     wc.cbClsExtra = 0;
 665     wc.cbWndExtra = DLGWINDOWEXTRA + 8;
 666     wc.hInstance = fe->inst;
 667     wc.hIcon = NULL;
 668     wc.hCursor = LoadCursor(NULL, IDC_ARROW);
 669     wc.hbrBackground = (HBRUSH) (COLOR_BACKGROUND +1);
 670     wc.lpszMenuName = NULL;
 671     wc.lpszClassName = "GameConfigBox";
 672     RegisterClass(&wc);
 673
 674     hdc = GetDC(fe->hwnd);
 675     SetMapMode(hdc, MM_TEXT);
 676
 677     fe->cfg_done = FALSE;
 678
 679     fe->cfgfont = CreateFont(-MulDiv(8, GetDeviceCaps(hdc, LOGPIXELSY), 72),
 680                              0, 0, 0, 0,
 681                              FALSE, FALSE, FALSE, DEFAULT_CHARSET,
 682                              OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
 683                              DEFAULT_QUALITY,
 684                              FF_SWISS,
 685                              "MS Shell Dlg");
 686
 687     oldfont = SelectObject(hdc, fe->cfgfont);
 688     if (GetTextMetrics(hdc, &tm)) {
 689         height = tm.tmAscent + tm.tmDescent;
 690         width = tm.tmAveCharWidth;
 691     } else {
 692         height = width = 30;
 693     }
 694
 695     fe->cfg = midend_get_config(fe->me, which, &title);
 696     fe->cfg_which = which;
 697
 698     /*
 699      * Figure out the layout of the config box by measuring the
 700      * length of each piece of text.
 701      */
 702     maxlabel = maxcheckbox = 0;
 703     winheight = height/2;
 704
 705     for (i = fe->cfg; i->type != C_END; i++) {
 706         switch (i->type) {
 707           case C_STRING:
 708           case C_CHOICES:
 709             /*
 710              * Both these control types have a label filling only
 711              * the left-hand column of the box.
 712              */
 713             if (GetTextExtentPoint32(hdc, i->name, strlen(i->name), &size) &&
 714                 maxlabel < size.cx)
 715                 maxlabel = size.cx;
 716             winheight += height * 3 / 2 + (height / 2);
 717             break;
 718
 719           case C_BOOLEAN:
 720             /*
 721              * Checkboxes take up the whole of the box width.
 722              */
 723             if (GetTextExtentPoint32(hdc, i->name, strlen(i->name), &size) &&
 724                 maxcheckbox < size.cx)
 725                 maxcheckbox = size.cx;
 726             winheight += height + (height / 2);
 727             break;
 728         }
 729     }
 730
 731     winheight += height + height * 7 / 4;      /* OK / Cancel buttons */
 732
 733     col1l = 2*width;
 734     col1r = col1l + maxlabel;
 735     col2l = col1r + 2*width;
 736     col2r = col2l + 30*width;
 737     if (col2r < col1l+2*height+maxcheckbox)
 738         col2r = col1l+2*height+maxcheckbox;
 739     winwidth = col2r + 2*width;
 740
 741     ReleaseDC(fe->hwnd, hdc);
 742
 743     /*
 744      * Create the dialog, now that we know its size.
 745      */
 746     {
 747         RECT r, r2;
 748
 749         r.left = r.top = 0;
 750         r.right = winwidth;
 751         r.bottom = winheight;
 752
 753         AdjustWindowRectEx(&r, (WS_OVERLAPPEDWINDOW /*|
 754                                 DS_MODALFRAME | WS_POPUP | WS_VISIBLE |
 755                                 WS_CAPTION | WS_SYSMENU*/) &~
 756                            (WS_MAXIMIZEBOX | WS_OVERLAPPED),
 757                            FALSE, 0);
 758
 759         /*
 760          * Centre the dialog on its parent window.
 761          */
 762         r.right -= r.left;
 763         r.bottom -= r.top;
 764         GetWindowRect(fe->hwnd, &r2);
 765         r.left = (r2.left + r2.right - r.right) / 2;
 766         r.top = (r2.top + r2.bottom - r.bottom) / 2;
 767         r.right += r.left;
 768         r.bottom += r.top;
 769
 770         fe->cfgbox = CreateWindowEx(0, wc.lpszClassName, title,
 771                                     DS_MODALFRAME | WS_POPUP | WS_VISIBLE |
 772                                     WS_CAPTION | WS_SYSMENU,
 773                                     r.left, r.top,
 774                                     r.right-r.left, r.bottom-r.top,
 775                                     fe->hwnd, NULL, fe->inst, NULL);
 776         sfree(title);
 777     }
 778
 779     SendMessage(fe->cfgbox, WM_SETFONT, (WPARAM)fe->cfgfont, FALSE);
 780
 781     SetWindowLong(fe->cfgbox, GWL_USERDATA, (LONG)fe);
 782     SetWindowLong(fe->cfgbox, DWL_DLGPROC, (LONG)ConfigDlgProc);
 783
 784     /*
 785      * Count the controls so we can allocate cfgaux.
 786      */
 787     for (nctrls = 0, i = fe->cfg; i->type != C_END; i++)
 788         nctrls++;
 789     fe->cfgaux = snewn(nctrls, struct cfg_aux);
 790
 791     id = 1000;
 792     y = height/2;
 793     for (i = fe->cfg, j = fe->cfgaux; i->type != C_END; i++, j++) {
 794         switch (i->type) {
 795           case C_STRING:
 796             /*
 797              * Edit box with a label beside it.
 798              */
 799             mkctrl(fe, col1l, col1r, y+height*1/8, y+height*9/8,
 800                    "Static", 0, 0, i->name, id++);
 801             ctl = mkctrl(fe, col2l, col2r, y, y+height*3/2,
 802                          "EDIT", WS_TABSTOP | ES_AUTOHSCROLL,
 803                          WS_EX_CLIENTEDGE, "", (j->ctlid = id++));
 804             SetWindowText(ctl, i->sval);
 805             y += height*3/2;
 806             break;
 807
 808           case C_BOOLEAN:
 809             /*
 810              * Simple checkbox.
 811              */
 812             mkctrl(fe, col1l, col2r, y, y+height, "BUTTON",
 813                    BS_NOTIFY | BS_AUTOCHECKBOX | WS_TABSTOP,
 814                    0, i->name, (j->ctlid = id++));
 815             CheckDlgButton(fe->cfgbox, j->ctlid, (i->ival != 0));
 816             y += height;
 817             break;
 818
 819           case C_CHOICES:
 820             /*
 821              * Drop-down list with a label beside it.
 822              */
 823             mkctrl(fe, col1l, col1r, y+height*1/8, y+height*9/8,
 824                    "STATIC", 0, 0, i->name, id++);
 825             ctl = mkctrl(fe, col2l, col2r, y, y+height*41/2,
 826                          "COMBOBOX", WS_TABSTOP |
 827                          CBS_DROPDOWNLIST | CBS_HASSTRINGS,
 828                          WS_EX_CLIENTEDGE, "", (j->ctlid = id++));
 829             {
 830                 char c, *p, *q, *str;
 831
 832                 SendMessage(ctl, CB_RESETCONTENT, 0, 0);
 833                 p = i->sval;
 834                 c = *p++;
 835                 while (*p) {
 836                     q = p;
 837                     while (*q && *q != c) q++;
 838                     str = snewn(q-p+1, char);
 839                     strncpy(str, p, q-p);
 840                     str[q-p] = '\0';
 841                     SendMessage(ctl, CB_ADDSTRING, 0, (LPARAM)str);
 842                     sfree(str);
 843                     if (*q) q++;
 844                     p = q;
 845                 }
 846             }
 847
 848             SendMessage(ctl, CB_SETCURSEL, i->ival, 0);
 849
 850             y += height*3/2;
 851             break;
 852         }
 853
 854         assert(y < winheight);
 855         y += height/2;
 856     }
 857
 858     y += height/2;                     /* extra space before OK and Cancel */
 859     mkctrl(fe, col1l, (col1l+col2r)/2-width, y, y+height*7/4, "BUTTON",
 860            BS_PUSHBUTTON | BS_NOTIFY | WS_TABSTOP | BS_DEFPUSHBUTTON, 0,
 861            "OK", IDOK);
 862     mkctrl(fe, (col1l+col2r)/2+width, col2r, y, y+height*7/4, "BUTTON",
 863            BS_PUSHBUTTON | BS_NOTIFY | WS_TABSTOP, 0, "Cancel", IDCANCEL);
 864
 865     SendMessage(fe->cfgbox, WM_INITDIALOG, 0, 0);
 866
 867     EnableWindow(fe->hwnd, FALSE);
 868     ShowWindow(fe->cfgbox, SW_NORMAL);
 869     while ((gm=GetMessage(&msg, NULL, 0, 0)) > 0) {
 870         if (!IsDialogMessage(fe->cfgbox, &msg))
 871             DispatchMessage(&msg);
 872         if (fe->cfg_done)
 873             break;
 874     }
 875     EnableWindow(fe->hwnd, TRUE);
 876     SetForegroundWindow(fe->hwnd);
 877     DestroyWindow(fe->cfgbox);
 878     DeleteObject(fe->cfgfont);
 879
 880     free_cfg(fe->cfg);
 881     sfree(fe->cfgaux);
 882
 883     return (fe->cfg_done == 2);
 884 }
 885
 886 static void new_game_type(frontend *fe)
 887 {
 888     RECT r, sr;
 889     HDC hdc;
 890     int x, y;
 891
 892     midend_new_game(fe->me);
 893     midend_size(fe->me, &x, &y);
 894
 895     r.left = r.top = 0;
 896     r.right = x;
 897     r.bottom = y;
 898     AdjustWindowRectEx(&r, WS_OVERLAPPEDWINDOW &~
 899                        (WS_THICKFRAME | WS_MAXIMIZEBOX |
 900                         WS_OVERLAPPED),
 901                        TRUE, 0);
 902
 903     if (fe->statusbar != NULL) {
 904         GetWindowRect(fe->statusbar, &sr);
 905     } else {
 906         sr.left = sr.right = sr.top = sr.bottom = 0;
 907     }
 908     SetWindowPos(fe->hwnd, NULL, 0, 0,
 909                  r.right - r.left,
 910                  r.bottom - r.top + sr.bottom - sr.top,
 911                  SWP_NOMOVE | SWP_NOZORDER);
 912     if (fe->statusbar != NULL)
 913         SetWindowPos(fe->statusbar, NULL, 0, y, x,
 914                      sr.bottom - sr.top, SWP_NOZORDER);
 915
 916     DeleteObject(fe->bitmap);
 917
 918     hdc = GetDC(fe->hwnd);
 919     fe->bitmap = CreateCompatibleBitmap(hdc, x, y);
 920     ReleaseDC(fe->hwnd, hdc);
 921
 922     midend_redraw(fe->me);
 923 }
 924
 925 static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 926                                 WPARAM wParam, LPARAM lParam)
 927 {
 928     frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA);
 929
 930     switch (message) {
 931       case WM_CLOSE:
 932         DestroyWindow(hwnd);
 933         return 0;
 934       case WM_COMMAND:
 935         switch (wParam & ~0xF) {       /* low 4 bits reserved to Windows */
 936           case IDM_NEW:
 937             if (!midend_process_key(fe->me, 0, 0, 'n'))
 938                 PostQuitMessage(0);
 939             break;
 940           case IDM_RESTART:
 941             if (!midend_process_key(fe->me, 0, 0, 'r'))
 942                 PostQuitMessage(0);
 943             break;
 944           case IDM_UNDO:
 945             if (!midend_process_key(fe->me, 0, 0, 'u'))
 946                 PostQuitMessage(0);
 947             break;
 948           case IDM_REDO:
 949             if (!midend_process_key(fe->me, 0, 0, '\x12'))
 950                 PostQuitMessage(0);
 951             break;
 952           case IDM_COPY:
 953             {
 954                 char *text = midend_text_format(fe->me);
 955                 if (text)
 956                     write_clip(hwnd, text);
 957                 else
 958                     MessageBeep(MB_ICONWARNING);
 959                 sfree(text);
 960             }
 961             break;
 962           case IDM_SOLVE:
 963             {
 964                 char *msg = midend_solve(fe->me);
 965                 if (msg)
 966                     MessageBox(hwnd, msg, "Unable to solve",
 967                                MB_ICONERROR | MB_OK);
 968             }
 969             break;
 970           case IDM_QUIT:
 971             if (!midend_process_key(fe->me, 0, 0, 'q'))
 972                 PostQuitMessage(0);
 973             break;
 974           case IDM_CONFIG:
 975             if (get_config(fe, CFG_SETTINGS))
 976                 new_game_type(fe);
 977             break;
 978           case IDM_SEED:
 979             if (get_config(fe, CFG_SEED))
 980                 new_game_type(fe);
 981             break;
 982           case IDM_HELPC:
 983             assert(fe->help_path);
 984             WinHelp(hwnd, fe->help_path,
 985                     fe->help_has_contents ? HELP_FINDER : HELP_CONTENTS, 0);
 986             break;
 987           case IDM_GAMEHELP:
 988             assert(fe->help_path);
 989             assert(thegame.winhelp_topic);
 990             {
 991                 char *cmd = snewn(10+strlen(thegame.winhelp_topic), char);
 992                 sprintf(cmd, "JI(`',`%s')", thegame.winhelp_topic);
 993                 WinHelp(hwnd, fe->help_path, HELP_COMMAND, (DWORD)cmd);
 994                 sfree(cmd);
 995             }
 996             break;
 997           default:
 998             {
 999                 int p = ((wParam &~ 0xF) - IDM_PRESETS) / 0x10;
1000
1001                 if (p >= 0 && p < fe->npresets) {
1002                     midend_set_params(fe->me, fe->presets[p]);
1003                     new_game_type(fe);
1004                 }
1005             }
1006             break;
1007         }
1008         break;
1009       case WM_DESTROY:
1010         PostQuitMessage(0);
1011         return 0;
1012       case WM_PAINT:
1013         {
1014             PAINTSTRUCT p;
1015             HDC hdc, hdc2;
1016             HBITMAP prevbm;
1017
1018             hdc = BeginPaint(hwnd, &p);
1019             hdc2 = CreateCompatibleDC(hdc);
1020             prevbm = SelectObject(hdc2, fe->bitmap);
1021             BitBlt(hdc,
1022                    p.rcPaint.left, p.rcPaint.top,
1023                    p.rcPaint.right - p.rcPaint.left,
1024                    p.rcPaint.bottom - p.rcPaint.top,
1025                    hdc2,
1026                    p.rcPaint.left, p.rcPaint.top,
1027                    SRCCOPY);
1028             SelectObject(hdc2, prevbm);
1029             DeleteDC(hdc2);
1030             EndPaint(hwnd, &p);
1031         }
1032         return 0;
1033       case WM_KEYDOWN:
1034         {
1035             int key = -1;
1036
1037             switch (wParam) {
1038               case VK_LEFT: key = CURSOR_LEFT; break;
1039               case VK_RIGHT: key = CURSOR_RIGHT; break;
1040               case VK_UP: key = CURSOR_UP; break;
1041               case VK_DOWN: key = CURSOR_DOWN; break;
1042                 /*
1043                  * Diagonal keys on the numeric keypad.
1044                  */
1045               case VK_PRIOR:
1046                 if (!(lParam & 0x01000000)) key = CURSOR_UP_RIGHT;
1047                 break;
1048               case VK_NEXT:
1049                 if (!(lParam & 0x01000000)) key = CURSOR_DOWN_RIGHT;
1050                 break;
1051               case VK_HOME:
1052                 if (!(lParam & 0x01000000)) key = CURSOR_UP_LEFT;
1053                 break;
1054               case VK_END:
1055                 if (!(lParam & 0x01000000)) key = CURSOR_DOWN_LEFT;
1056                 break;
1057                 /*
1058                  * Numeric keypad keys with Num Lock on.
1059                  */
1060               case VK_NUMPAD4: key = CURSOR_LEFT; break;
1061               case VK_NUMPAD6: key = CURSOR_RIGHT; break;
1062               case VK_NUMPAD8: key = CURSOR_UP; break;
1063               case VK_NUMPAD2: key = CURSOR_DOWN; break;
1064               case VK_NUMPAD9: key = CURSOR_UP_RIGHT; break;
1065               case VK_NUMPAD3: key = CURSOR_DOWN_RIGHT; break;
1066               case VK_NUMPAD7: key = CURSOR_UP_LEFT; break;
1067               case VK_NUMPAD1: key = CURSOR_DOWN_LEFT; break;
1068             }
1069
1070             if (key != -1) {
1071                 if (!midend_process_key(fe->me, 0, 0, key))
1072                     PostQuitMessage(0);
1073             } else {
1074                 MSG m;
1075                 m.hwnd = hwnd;
1076                 m.message = WM_KEYDOWN;
1077                 m.wParam = wParam;
1078                 m.lParam = lParam & 0xdfff;
1079                 TranslateMessage(&m);
1080             }
1081         }
1082         break;
1083       case WM_LBUTTONDOWN:
1084       case WM_RBUTTONDOWN:
1085       case WM_MBUTTONDOWN:
1086         {
1087             int button;
1088
1089             /*
1090              * Shift-clicks count as middle-clicks, since otherwise
1091              * two-button Windows users won't have any kind of
1092              * middle click to use.
1093              */
1094             if (message == WM_MBUTTONDOWN || (wParam & MK_SHIFT))
1095                 button = MIDDLE_BUTTON;
1096             else if (message == WM_LBUTTONDOWN)
1097                 button = LEFT_BUTTON;
1098             else
1099                 button = RIGHT_BUTTON;
1100
1101             if (!midend_process_key(fe->me, (signed short)LOWORD(lParam),
1102                                     (signed short)HIWORD(lParam), button))
1103                 PostQuitMessage(0);
1104
1105             SetCapture(hwnd);
1106         }
1107         break;
1108       case WM_LBUTTONUP:
1109       case WM_RBUTTONUP:
1110       case WM_MBUTTONUP:
1111         {
1112             int button;
1113
1114             /*
1115              * Shift-clicks count as middle-clicks, since otherwise
1116              * two-button Windows users won't have any kind of
1117              * middle click to use.
1118              */
1119             if (message == WM_MBUTTONUP || (wParam & MK_SHIFT))
1120                 button = MIDDLE_RELEASE;
1121             else if (message == WM_LBUTTONUP)
1122                 button = LEFT_RELEASE;
1123             else
1124                 button = RIGHT_RELEASE;
1125
1126             if (!midend_process_key(fe->me, (signed short)LOWORD(lParam),
1127                                     (signed short)HIWORD(lParam), button))
1128                 PostQuitMessage(0);
1129
1130             ReleaseCapture();
1131         }
1132         break;
1133       case WM_MOUSEMOVE:
1134         {
1135             int button;
1136
1137             if (wParam & (MK_MBUTTON | MK_SHIFT))
1138                 button = MIDDLE_DRAG;
1139             else if (wParam & MK_LBUTTON)
1140                 button = LEFT_DRAG;
1141             else
1142                 button = RIGHT_DRAG;
1143
1144             if (!midend_process_key(fe->me, (signed short)LOWORD(lParam),
1145                                     (signed short)HIWORD(lParam), button))
1146                 PostQuitMessage(0);
1147         }
1148         break;
1149       case WM_CHAR:
1150         if (!midend_process_key(fe->me, 0, 0, (unsigned char)wParam))
1151             PostQuitMessage(0);
1152         return 0;
1153       case WM_TIMER:
1154         if (fe->timer) {
1155             DWORD now = GetTickCount();
1156             float elapsed = (float) (now - fe->timer_last_tickcount) * 0.001F;
1157             midend_timer(fe->me, elapsed);
1158             fe->timer_last_tickcount = now;
1159         }
1160         return 0;
1161     }
1162
1163     return DefWindowProc(hwnd, message, wParam, lParam);
1164 }
1165
1166 int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
1167 {
1168     MSG msg;
1169     char *error;
1170
1171     InitCommonControls();
1172
1173     if (!prev) {
1174         WNDCLASS wndclass;
1175
1176         wndclass.style = 0;
1177         wndclass.lpfnWndProc = WndProc;
1178         wndclass.cbClsExtra = 0;
1179         wndclass.cbWndExtra = 0;
1180         wndclass.hInstance = inst;
1181         wndclass.hIcon = LoadIcon(inst, IDI_APPLICATION);
1182         wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
1183         wndclass.hbrBackground = NULL;
1184         wndclass.lpszMenuName = NULL;
1185         wndclass.lpszClassName = thegame.name;
1186
1187         RegisterClass(&wndclass);
1188     }
1189
1190     while (*cmdline && isspace(*cmdline))
1191         cmdline++;
1192
1193     if (!new_window(inst, *cmdline ? cmdline : NULL, &error)) {
1194         char buf[128];
1195         sprintf(buf, "%.100s Error", thegame.name);
1196         MessageBox(NULL, error, buf, MB_OK|MB_ICONERROR);
1197         return 1;
1198     }
1199
1200     while (GetMessage(&msg, NULL, 0, 0)) {
1201         DispatchMessage(&msg);
1202     }
1203
1204     return msg.wParam;
1205 }