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

   1 /*
   2  * windows.c: Windows front end for my puzzle collection.
   3  */
   4
   5 #include <windows.h>
   6 #include <commctrl.h>
   7
   8 #include <stdio.h>
   9 #include <assert.h>
  10 #include <ctype.h>
  11 #include <stdarg.h>
  12 #include <stdlib.h>
  13 #include <limits.h>
  14 #include <time.h>
  15
  16 #include "puzzles.h"
  17
  18 #define IDM_NEW       0x0010
  19 #define IDM_RESTART   0x0020
  20 #define IDM_UNDO      0x0030
  21 #define IDM_REDO      0x0040
  22 #define IDM_COPY      0x0050
  23 #define IDM_SOLVE     0x0060
  24 #define IDM_QUIT      0x0070
  25 #define IDM_CONFIG    0x0080
  26 #define IDM_DESC      0x0090
  27 #define IDM_SEED      0x00A0
  28 #define IDM_HELPC     0x00B0
  29 #define IDM_GAMEHELP  0x00C0
  30 #define IDM_ABOUT     0x00D0
  31 #define IDM_SAVE      0x00E0
  32 #define IDM_LOAD      0x00F0
  33 #define IDM_PRESETS   0x0100
  34
  35 #define HELP_FILE_NAME  "puzzles.hlp"
  36 #define HELP_CNT_NAME   "puzzles.cnt"
  37
  38 #ifdef DEBUGGING
  39 static FILE *debug_fp = NULL;
  40 static HANDLE debug_hdl = INVALID_HANDLE_VALUE;
  41 static int debug_got_console = 0;
  42
  43 void dputs(char *buf)
  44 {
  45     DWORD dw;
  46
  47     if (!debug_got_console) {
  48         if (AllocConsole()) {
  49             debug_got_console = 1;
  50             debug_hdl = GetStdHandle(STD_OUTPUT_HANDLE);
  51         }
  52     }
  53     if (!debug_fp) {
  54         debug_fp = fopen("debug.log", "w");
  55     }
  56
  57     if (debug_hdl != INVALID_HANDLE_VALUE) {
  58         WriteFile(debug_hdl, buf, strlen(buf), &dw, NULL);
  59     }
  60     fputs(buf, debug_fp);
  61     fflush(debug_fp);
  62 }
  63
  64 void debug_printf(char *fmt, ...)
  65 {
  66     char buf[4096];
  67     va_list ap;
  68
  69     va_start(ap, fmt);
  70     vsprintf(buf, fmt, ap);
  71     dputs(buf);
  72     va_end(ap);
  73 }
  74 #endif
  75
  76 struct font {
  77     HFONT font;
  78     int type;
  79     int size;
  80 };
  81
  82 struct cfg_aux {
  83     int ctlid;
  84 };
  85
  86 struct blitter {
  87     HBITMAP bitmap;
  88     frontend *fe;
  89     int x, y, w, h;
  90 };
  91
  92 struct frontend {
  93     midend_data *me;
  94     HWND hwnd, statusbar, cfgbox;
  95     HINSTANCE inst;
  96     HBITMAP bitmap, prevbm;
  97     HDC hdc_bm;
  98     COLORREF *colours;
  99     HBRUSH *brushes;
 100     HPEN *pens;
 101     HRGN clip;
 102     UINT timer;
 103     DWORD timer_last_tickcount;
 104     int npresets;
 105     game_params **presets;
 106     struct font *fonts;
 107     int nfonts, fontsize;
 108     config_item *cfg;
 109     struct cfg_aux *cfgaux;
 110     int cfg_which, dlg_done;
 111     HFONT cfgfont;
 112     char *help_path;
 113     int help_has_contents;
 114     char *laststatus;
 115 };
 116
 117 void fatal(char *fmt, ...)
 118 {
 119     char buf[2048];
 120     va_list ap;
 121
 122     va_start(ap, fmt);
 123     vsprintf(buf, fmt, ap);
 124     va_end(ap);
 125
 126     MessageBox(NULL, buf, "Fatal error", MB_ICONEXCLAMATION | MB_OK);
 127
 128     exit(1);
 129 }
 130
 131 void get_random_seed(void **randseed, int *randseedsize)
 132 {
 133     time_t *tp = snew(time_t);
 134     time(tp);
 135     *randseed = (void *)tp;
 136     *randseedsize = sizeof(time_t);
 137 }
 138
 139 void status_bar(frontend *fe, char *text)
 140 {
 141     char *rewritten = midend_rewrite_statusbar(fe->me, text);
 142     if (!fe->laststatus || strcmp(rewritten, fe->laststatus)) {
 143         SetWindowText(fe->statusbar, rewritten);
 144         sfree(fe->laststatus);
 145         fe->laststatus = rewritten;
 146     } else {
 147         sfree(rewritten);
 148     }
 149 }
 150
 151 blitter *blitter_new(int w, int h)
 152 {
 153     blitter *bl = snew(blitter);
 154
 155     memset(bl, 0, sizeof(blitter));
 156     bl->w = w;
 157     bl->h = h;
 158     bl->bitmap = 0;
 159
 160     return bl;
 161 }
 162
 163 void blitter_free(blitter *bl)
 164 {
 165     if (bl->bitmap) DeleteObject(bl->bitmap);
 166     sfree(bl);
 167 }
 168
 169 static void blitter_mkbitmap(frontend *fe, blitter *bl)
 170 {
 171     HDC hdc = GetDC(fe->hwnd);
 172     bl->bitmap = CreateCompatibleBitmap(hdc, bl->w, bl->h);
 173     ReleaseDC(fe->hwnd, hdc);
 174 }
 175
 176 /* BitBlt(dstDC, dstX, dstY, dstW, dstH, srcDC, srcX, srcY, dType) */
 177
 178 void blitter_save(frontend *fe, blitter *bl, int x, int y)
 179 {
 180     HDC hdc_win, hdc_blit;
 181     HBITMAP prev_blit;
 182
 183     if (!bl->bitmap) blitter_mkbitmap(fe, bl);
 184
 185     bl->x = x; bl->y = y;
 186
 187     hdc_win = GetDC(fe->hwnd);
 188     hdc_blit = CreateCompatibleDC(hdc_win);
 189     if (!hdc_blit) fatal("hdc_blit failed: 0x%x", GetLastError());
 190
 191     prev_blit = SelectObject(hdc_blit, bl->bitmap);
 192     if (prev_blit == NULL || prev_blit == HGDI_ERROR)
 193         fatal("SelectObject for hdc_main failed: 0x%x", GetLastError());
 194
 195     if (!BitBlt(hdc_blit, 0, 0, bl->w, bl->h,
 196                 fe->hdc_bm, x, y, SRCCOPY))
 197         fatal("BitBlt failed: 0x%x", GetLastError());
 198
 199     SelectObject(hdc_blit, prev_blit);
 200     DeleteDC(hdc_blit);
 201     ReleaseDC(fe->hwnd, hdc_win);
 202 }
 203
 204 void blitter_load(frontend *fe, blitter *bl, int x, int y)
 205 {
 206     HDC hdc_win, hdc_blit;
 207     HBITMAP prev_blit;
 208
 209     assert(bl->bitmap); /* we should always have saved before loading */
 210
 211     if (x == BLITTER_FROMSAVED) x = bl->x;
 212     if (y == BLITTER_FROMSAVED) y = bl->y;
 213
 214     hdc_win = GetDC(fe->hwnd);
 215     hdc_blit = CreateCompatibleDC(hdc_win);
 216
 217     prev_blit = SelectObject(hdc_blit, bl->bitmap);
 218
 219     BitBlt(fe->hdc_bm, x, y, bl->w, bl->h,
 220            hdc_blit, 0, 0, SRCCOPY);
 221
 222     SelectObject(hdc_blit, prev_blit);
 223     DeleteDC(hdc_blit);
 224     ReleaseDC(fe->hwnd, hdc_win);
 225 }
 226
 227 void frontend_default_colour(frontend *fe, float *output)
 228 {
 229     DWORD c = GetSysColor(COLOR_MENU); /* ick */
 230
 231     output[0] = (float)(GetRValue(c) / 255.0);
 232     output[1] = (float)(GetGValue(c) / 255.0);
 233     output[2] = (float)(GetBValue(c) / 255.0);
 234 }
 235
 236 void clip(frontend *fe, int x, int y, int w, int h)
 237 {
 238     IntersectClipRect(fe->hdc_bm, x, y, x+w, y+h);
 239 }
 240
 241 void unclip(frontend *fe)
 242 {
 243     SelectClipRgn(fe->hdc_bm, NULL);
 244 }
 245
 246 void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
 247                int align, int colour, char *text)
 248 {
 249     int i;
 250
 251     /*
 252      * Find or create the font.
 253      */
 254     for (i = 0; i < fe->nfonts; i++)
 255         if (fe->fonts[i].type == fonttype && fe->fonts[i].size == fontsize)
 256             break;
 257
 258     if (i == fe->nfonts) {
 259         if (fe->fontsize <= fe->nfonts) {
 260             fe->fontsize = fe->nfonts + 10;
 261             fe->fonts = sresize(fe->fonts, fe->fontsize, struct font);
 262         }
 263
 264         fe->nfonts++;
 265
 266         fe->fonts[i].type = fonttype;
 267         fe->fonts[i].size = fontsize;
 268
 269         fe->fonts[i].font = CreateFont(-fontsize, 0, 0, 0, FW_BOLD,
 270                                        FALSE, FALSE, FALSE, DEFAULT_CHARSET,
 271                                        OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
 272                                        DEFAULT_QUALITY,
 273                                        (fonttype == FONT_FIXED ?
 274                                         FIXED_PITCH | FF_DONTCARE :
 275                                         VARIABLE_PITCH | FF_SWISS),
 276                                        NULL);
 277     }
 278
 279     /*
 280      * Position and draw the text.
 281      */
 282     {
 283         HFONT oldfont;
 284         TEXTMETRIC tm;
 285         SIZE size;
 286
 287         oldfont = SelectObject(fe->hdc_bm, fe->fonts[i].font);
 288         if (GetTextMetrics(fe->hdc_bm, &tm)) {
 289             if (align & ALIGN_VCENTRE)
 290                 y -= (tm.tmAscent+tm.tmDescent)/2;
 291             else
 292                 y -= tm.tmAscent;
 293         }
 294         if (GetTextExtentPoint32(fe->hdc_bm, text, strlen(text), &size)) {
 295             if (align & ALIGN_HCENTRE)
 296                 x -= size.cx / 2;
 297             else if (align & ALIGN_HRIGHT)
 298                 x -= size.cx;
 299         }
 300         SetBkMode(fe->hdc_bm, TRANSPARENT);
 301         SetTextColor(fe->hdc_bm, fe->colours[colour]);
 302         TextOut(fe->hdc_bm, x, y, text, strlen(text));
 303         SelectObject(fe->hdc_bm, oldfont);
 304     }
 305 }
 306
 307 void draw_rect(frontend *fe, int x, int y, int w, int h, int colour)
 308 {
 309     if (w == 1 && h == 1) {
 310         /*
 311          * Rectangle() appears to get uppity if asked to draw a 1x1
 312          * rectangle, presumably on the grounds that that's beneath
 313          * its dignity and you ought to be using SetPixel instead.
 314          * So I will.
 315          */
 316         SetPixel(fe->hdc_bm, x, y, fe->colours[colour]);
 317     } else {
 318         HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[colour]);
 319         HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
 320         Rectangle(fe->hdc_bm, x, y, x+w, y+h);
 321         SelectObject(fe->hdc_bm, oldbrush);
 322         SelectObject(fe->hdc_bm, oldpen);
 323     }
 324 }
 325
 326 void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour)
 327 {
 328     HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
 329     MoveToEx(fe->hdc_bm, x1, y1, NULL);
 330     LineTo(fe->hdc_bm, x2, y2);
 331     SetPixel(fe->hdc_bm, x2, y2, fe->colours[colour]);
 332     SelectObject(fe->hdc_bm, oldpen);
 333 }
 334
 335 void draw_circle(frontend *fe, int cx, int cy, int radius,
 336                  int fill, int colour)
 337 {
 338     if (fill) {
 339         HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[colour]);
 340         HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
 341         Ellipse(fe->hdc_bm, cx - radius, cy - radius,
 342                 cx + radius + 1, cy + radius + 1);
 343         SelectObject(fe->hdc_bm, oldbrush);
 344         SelectObject(fe->hdc_bm, oldpen);
 345     } else {
 346         HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
 347         Arc(fe->hdc_bm, cx - radius, cy - radius,
 348             cx + radius + 1, cy + radius + 1,
 349             cx - radius, cy, cx - radius, cy);
 350         SelectObject(fe->hdc_bm, oldpen);
 351     }
 352 }
 353
 354 void draw_polygon(frontend *fe, int *coords, int npoints,
 355                   int fill, int colour)
 356 {
 357     POINT *pts = snewn(npoints+1, POINT);
 358     int i;
 359
 360     for (i = 0; i <= npoints; i++) {
 361         int j = (i < npoints ? i : 0);
 362         pts[i].x = coords[j*2];
 363         pts[i].y = coords[j*2+1];
 364     }
 365
 366     if (fill) {
 367         HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[colour]);
 368         HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
 369         Polygon(fe->hdc_bm, pts, npoints);
 370         SelectObject(fe->hdc_bm, oldbrush);
 371         SelectObject(fe->hdc_bm, oldpen);
 372     } else {
 373         HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
 374         Polyline(fe->hdc_bm, pts, npoints+1);
 375         SelectObject(fe->hdc_bm, oldpen);
 376     }
 377
 378     sfree(pts);
 379 }
 380
 381 void start_draw(frontend *fe)
 382 {
 383     HDC hdc_win;
 384     hdc_win = GetDC(fe->hwnd);
 385     fe->hdc_bm = CreateCompatibleDC(hdc_win);
 386     fe->prevbm = SelectObject(fe->hdc_bm, fe->bitmap);
 387     ReleaseDC(fe->hwnd, hdc_win);
 388     fe->clip = NULL;
 389     SetMapMode(fe->hdc_bm, MM_TEXT);
 390 }
 391
 392 void draw_update(frontend *fe, int x, int y, int w, int h)
 393 {
 394     RECT r;
 395
 396     r.left = x;
 397     r.top = y;
 398     r.right = x + w;
 399     r.bottom = y + h;
 400
 401     InvalidateRect(fe->hwnd, &r, FALSE);
 402 }
 403
 404 void end_draw(frontend *fe)
 405 {
 406     SelectObject(fe->hdc_bm, fe->prevbm);
 407     DeleteDC(fe->hdc_bm);
 408     if (fe->clip) {
 409         DeleteObject(fe->clip);
 410         fe->clip = NULL;
 411     }
 412 }
 413
 414 void deactivate_timer(frontend *fe)
 415 {
 416     KillTimer(fe->hwnd, fe->timer);
 417     fe->timer = 0;
 418 }
 419
 420 void activate_timer(frontend *fe)
 421 {
 422     if (!fe->timer) {
 423         fe->timer = SetTimer(fe->hwnd, fe->timer, 20, NULL);
 424         fe->timer_last_tickcount = GetTickCount();
 425     }
 426 }
 427
 428 void write_clip(HWND hwnd, char *data)
 429 {
 430     HGLOBAL clipdata;
 431     int len, i, j;
 432     char *data2;
 433     void *lock;
 434
 435     /*
 436      * Windows expects CRLF in the clipboard, so we must convert
 437      * any \n that has come out of the puzzle backend.
 438      */
 439     len = 0;
 440     for (i = 0; data[i]; i++) {
 441         if (data[i] == '\n')
 442             len++;
 443         len++;
 444     }
 445     data2 = snewn(len+1, char);
 446     j = 0;
 447     for (i = 0; data[i]; i++) {
 448         if (data[i] == '\n')
 449             data2[j++] = '\r';
 450         data2[j++] = data[i];
 451     }
 452     assert(j == len);
 453     data2[j] = '\0';
 454
 455     clipdata = GlobalAlloc(GMEM_DDESHARE | GMEM_MOVEABLE, len + 1);
 456     if (!clipdata)
 457         return;
 458     lock = GlobalLock(clipdata);
 459     if (!lock)
 460         return;
 461     memcpy(lock, data2, len);
 462     ((unsigned char *) lock)[len] = 0;
 463     GlobalUnlock(clipdata);
 464
 465     if (OpenClipboard(hwnd)) {
 466         EmptyClipboard();
 467         SetClipboardData(CF_TEXT, clipdata);
 468         CloseClipboard();
 469     } else
 470         GlobalFree(clipdata);
 471
 472     sfree(data2);
 473 }
 474
 475 /*
 476  * See if we can find a help file.
 477  */
 478 static void find_help_file(frontend *fe)
 479 {
 480     char b[2048], *p, *q, *r;
 481     FILE *fp;
 482     if (!fe->help_path) {
 483         GetModuleFileName(NULL, b, sizeof(b) - 1);
 484         r = b;
 485         p = strrchr(b, '\\');
 486         if (p && p >= r) r = p+1;
 487         q = strrchr(b, ':');
 488         if (q && q >= r) r = q+1;
 489         strcpy(r, HELP_FILE_NAME);
 490         if ( (fp = fopen(b, "r")) != NULL) {
 491             fe->help_path = dupstr(b);
 492             fclose(fp);
 493         } else
 494             fe->help_path = NULL;
 495         strcpy(r, HELP_CNT_NAME);
 496         if ( (fp = fopen(b, "r")) != NULL) {
 497             fe->help_has_contents = TRUE;
 498             fclose(fp);
 499         } else
 500             fe->help_has_contents = FALSE;
 501     }
 502 }
 503
 504 static void check_window_size(frontend *fe, int *px, int *py)
 505 {
 506     RECT r;
 507     int x, y, sy;
 508
 509     if (fe->statusbar) {
 510         RECT sr;
 511         GetWindowRect(fe->statusbar, &sr);
 512         sy = sr.bottom - sr.top;
 513     } else {
 514         sy = 0;
 515     }
 516
 517     /*
 518      * See if we actually got the window size we wanted, and adjust
 519      * the puzzle size if not.
 520      */
 521     GetClientRect(fe->hwnd, &r);
 522     x = r.right - r.left;
 523     y = r.bottom - r.top - sy;
 524     midend_size(fe->me, &x, &y, FALSE);
 525     if (x != r.right - r.left || y != r.bottom - r.top) {
 526         /*
 527          * Resize the window, now we know what size we _really_
 528          * want it to be.
 529          */
 530         r.left = r.top = 0;
 531         r.right = x;
 532         r.bottom = y + sy;
 533         AdjustWindowRectEx(&r, WS_OVERLAPPEDWINDOW &~
 534                            (WS_THICKFRAME | WS_MAXIMIZEBOX | WS_OVERLAPPED),
 535                            TRUE, 0);
 536         SetWindowPos(fe->hwnd, NULL, 0, 0, r.right - r.left, r.bottom - r.top,
 537                      SWP_NOMOVE | SWP_NOZORDER);
 538     }
 539
 540     if (fe->statusbar) {
 541         GetClientRect(fe->hwnd, &r);
 542         SetWindowPos(fe->statusbar, NULL, 0, r.bottom-r.top-sy, r.right-r.left,
 543                      sy, SWP_NOZORDER);
 544     }
 545
 546     *px = x;
 547     *py = y;
 548 }
 549
 550 static frontend *new_window(HINSTANCE inst, char *game_id, char **error)
 551 {
 552     frontend *fe;
 553     int x, y;
 554     RECT r;
 555     HDC hdc;
 556
 557     fe = snew(frontend);
 558
 559     fe->me = midend_new(fe, &thegame);
 560
 561     if (game_id) {
 562         *error = midend_game_id(fe->me, game_id);
 563         if (*error) {
 564             midend_free(fe->me);
 565             sfree(fe);
 566             return NULL;
 567         }
 568     }
 569
 570     fe->help_path = NULL;
 571     find_help_file(fe);
 572
 573     fe->inst = inst;
 574     midend_new_game(fe->me);
 575
 576     fe->timer = 0;
 577
 578     fe->fonts = NULL;
 579     fe->nfonts = fe->fontsize = 0;
 580
 581     fe->laststatus = NULL;
 582
 583     {
 584         int i, ncolours;
 585         float *colours;
 586
 587         colours = midend_colours(fe->me, &ncolours);
 588
 589         fe->colours = snewn(ncolours, COLORREF);
 590         fe->brushes = snewn(ncolours, HBRUSH);
 591         fe->pens = snewn(ncolours, HPEN);
 592
 593         for (i = 0; i < ncolours; i++) {
 594             fe->colours[i] = RGB(255 * colours[i*3+0],
 595                                  255 * colours[i*3+1],
 596                                  255 * colours[i*3+2]);
 597             fe->brushes[i] = CreateSolidBrush(fe->colours[i]);
 598             fe->pens[i] = CreatePen(PS_SOLID, 1, fe->colours[i]);
 599         }
 600     }
 601
 602     x = y = INT_MAX;                   /* find puzzle's preferred size */
 603     midend_size(fe->me, &x, &y, FALSE);
 604
 605     r.left = r.top = 0;
 606     r.right = x;
 607     r.bottom = y;
 608     AdjustWindowRectEx(&r, WS_OVERLAPPEDWINDOW &~
 609                        (WS_THICKFRAME | WS_MAXIMIZEBOX | WS_OVERLAPPED),
 610                        TRUE, 0);
 611
 612     fe->hwnd = CreateWindowEx(0, thegame.name, thegame.name,
 613                               WS_OVERLAPPEDWINDOW &~
 614                               (WS_THICKFRAME | WS_MAXIMIZEBOX),
 615                               CW_USEDEFAULT, CW_USEDEFAULT,
 616                               r.right - r.left, r.bottom - r.top,
 617                               NULL, NULL, inst, NULL);
 618
 619     if (midend_wants_statusbar(fe->me)) {
 620         RECT sr;
 621         fe->statusbar = CreateWindowEx(0, STATUSCLASSNAME, "ooh",
 622                                        WS_CHILD | WS_VISIBLE,
 623                                        0, 0, 0, 0, /* status bar does these */
 624                                        fe->hwnd, NULL, inst, NULL);
 625         /*
 626          * Now resize the window to take account of the status bar.
 627          */
 628         GetWindowRect(fe->statusbar, &sr);
 629         GetWindowRect(fe->hwnd, &r);
 630         SetWindowPos(fe->hwnd, NULL, 0, 0, r.right - r.left,
 631                      r.bottom - r.top + sr.bottom - sr.top,
 632                      SWP_NOMOVE | SWP_NOZORDER);
 633     } else {
 634         fe->statusbar = NULL;
 635     }
 636
 637     {
 638         HMENU bar = CreateMenu();
 639         HMENU menu = CreateMenu();
 640
 641         AppendMenu(bar, MF_ENABLED|MF_POPUP, (UINT)menu, "Game");
 642         AppendMenu(menu, MF_ENABLED, IDM_NEW, "New");
 643         AppendMenu(menu, MF_ENABLED, IDM_RESTART, "Restart");
 644         AppendMenu(menu, MF_ENABLED, IDM_DESC, "Specific...");
 645         AppendMenu(menu, MF_ENABLED, IDM_SEED, "Random Seed...");
 646
 647         if ((fe->npresets = midend_num_presets(fe->me)) > 0 ||
 648             thegame.can_configure) {
 649             HMENU sub = CreateMenu();
 650             int i;
 651
 652             AppendMenu(bar, MF_ENABLED|MF_POPUP, (UINT)sub, "Type");
 653
 654             fe->presets = snewn(fe->npresets, game_params *);
 655
 656             for (i = 0; i < fe->npresets; i++) {
 657                 char *name;
 658
 659                 midend_fetch_preset(fe->me, i, &name, &fe->presets[i]);
 660
 661                 /*
 662                  * FIXME: we ought to go through and do something
 663                  * with ampersands here.
 664                  */
 665
 666                 AppendMenu(sub, MF_ENABLED, IDM_PRESETS + 0x10 * i, name);
 667             }
 668
 669             if (thegame.can_configure) {
 670                 AppendMenu(sub, MF_ENABLED, IDM_CONFIG, "Custom...");
 671             }
 672         }
 673
 674         AppendMenu(menu, MF_SEPARATOR, 0, 0);
 675         AppendMenu(menu, MF_ENABLED, IDM_LOAD, "Load");
 676         AppendMenu(menu, MF_ENABLED, IDM_SAVE, "Save");
 677         AppendMenu(menu, MF_SEPARATOR, 0, 0);
 678         AppendMenu(menu, MF_ENABLED, IDM_UNDO, "Undo");
 679         AppendMenu(menu, MF_ENABLED, IDM_REDO, "Redo");
 680         if (thegame.can_format_as_text) {
 681             AppendMenu(menu, MF_SEPARATOR, 0, 0);
 682             AppendMenu(menu, MF_ENABLED, IDM_COPY, "Copy");
 683         }
 684         if (thegame.can_solve) {
 685             AppendMenu(menu, MF_SEPARATOR, 0, 0);
 686             AppendMenu(menu, MF_ENABLED, IDM_SOLVE, "Solve");
 687         }
 688         AppendMenu(menu, MF_SEPARATOR, 0, 0);
 689         AppendMenu(menu, MF_ENABLED, IDM_QUIT, "Exit");
 690         menu = CreateMenu();
 691         AppendMenu(bar, MF_ENABLED|MF_POPUP, (UINT)menu, "Help");
 692         AppendMenu(menu, MF_ENABLED, IDM_ABOUT, "About");
 693         if (fe->help_path) {
 694             AppendMenu(menu, MF_SEPARATOR, 0, 0);
 695             AppendMenu(menu, MF_ENABLED, IDM_HELPC, "Contents");
 696             if (thegame.winhelp_topic) {
 697                 char *item;
 698                 assert(thegame.name);
 699                 item = snewn(9+strlen(thegame.name), char); /*ick*/
 700                 sprintf(item, "Help on %s", thegame.name);
 701                 AppendMenu(menu, MF_ENABLED, IDM_GAMEHELP, item);
 702                 sfree(item);
 703             }
 704         }
 705         SetMenu(fe->hwnd, bar);
 706     }
 707
 708     check_window_size(fe, &x, &y);
 709
 710     hdc = GetDC(fe->hwnd);
 711     fe->bitmap = CreateCompatibleBitmap(hdc, x, y);
 712     ReleaseDC(fe->hwnd, hdc);
 713
 714     SetWindowLong(fe->hwnd, GWL_USERDATA, (LONG)fe);
 715
 716     ShowWindow(fe->hwnd, SW_NORMAL);
 717     SetForegroundWindow(fe->hwnd);
 718
 719     midend_redraw(fe->me);
 720
 721     return fe;
 722 }
 723
 724 static int CALLBACK AboutDlgProc(HWND hwnd, UINT msg,
 725                                  WPARAM wParam, LPARAM lParam)
 726 {
 727     frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA);
 728
 729     switch (msg) {
 730       case WM_INITDIALOG:
 731         return 0;
 732
 733       case WM_COMMAND:
 734         if ((HIWORD(wParam) == BN_CLICKED ||
 735              HIWORD(wParam) == BN_DOUBLECLICKED) &&
 736             LOWORD(wParam) == IDOK)
 737             fe->dlg_done = 1;
 738         return 0;
 739
 740       case WM_CLOSE:
 741         fe->dlg_done = 1;
 742         return 0;
 743     }
 744
 745     return 0;
 746 }
 747
 748 static int CALLBACK ConfigDlgProc(HWND hwnd, UINT msg,
 749                                   WPARAM wParam, LPARAM lParam)
 750 {
 751     frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA);
 752     config_item *i;
 753     struct cfg_aux *j;
 754
 755     switch (msg) {
 756       case WM_INITDIALOG:
 757         return 0;
 758
 759       case WM_COMMAND:
 760         /*
 761          * OK and Cancel are special cases.
 762          */
 763         if ((HIWORD(wParam) == BN_CLICKED ||
 764              HIWORD(wParam) == BN_DOUBLECLICKED) &&
 765             (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)) {
 766             if (LOWORD(wParam) == IDOK) {
 767                 char *err = midend_set_config(fe->me, fe->cfg_which, fe->cfg);
 768
 769                 if (err) {
 770                     MessageBox(hwnd, err, "Validation error",
 771                                MB_ICONERROR | MB_OK);
 772                 } else {
 773                     fe->dlg_done = 2;
 774                 }
 775             } else {
 776                 fe->dlg_done = 1;
 777             }
 778             return 0;
 779         }
 780
 781         /*
 782          * First find the control whose id this is.
 783          */
 784         for (i = fe->cfg, j = fe->cfgaux; i->type != C_END; i++, j++) {
 785             if (j->ctlid == LOWORD(wParam))
 786                 break;
 787         }
 788         if (i->type == C_END)
 789             return 0;                  /* not our problem */
 790
 791         if (i->type == C_STRING && HIWORD(wParam) == EN_CHANGE) {
 792             char buffer[4096];
 793             GetDlgItemText(fe->cfgbox, j->ctlid, buffer, lenof(buffer));
 794             buffer[lenof(buffer)-1] = '\0';
 795             sfree(i->sval);
 796             i->sval = dupstr(buffer);
 797         } else if (i->type == C_BOOLEAN &&
 798                    (HIWORD(wParam) == BN_CLICKED ||
 799                     HIWORD(wParam) == BN_DOUBLECLICKED)) {
 800             i->ival = IsDlgButtonChecked(fe->cfgbox, j->ctlid);
 801         } else if (i->type == C_CHOICES &&
 802                    HIWORD(wParam) == CBN_SELCHANGE) {
 803             i->ival = SendDlgItemMessage(fe->cfgbox, j->ctlid,
 804                                          CB_GETCURSEL, 0, 0);
 805         }
 806
 807         return 0;
 808
 809       case WM_CLOSE:
 810         fe->dlg_done = 1;
 811         return 0;
 812     }
 813
 814     return 0;
 815 }
 816
 817 HWND mkctrl(frontend *fe, int x1, int x2, int y1, int y2,
 818             char *wclass, int wstyle,
 819             int exstyle, const char *wtext, int wid)
 820 {
 821     HWND ret;
 822     ret = CreateWindowEx(exstyle, wclass, wtext,
 823                          wstyle | WS_CHILD | WS_VISIBLE, x1, y1, x2-x1, y2-y1,
 824                          fe->cfgbox, (HMENU) wid, fe->inst, NULL);
 825     SendMessage(ret, WM_SETFONT, (WPARAM)fe->cfgfont, MAKELPARAM(TRUE, 0));
 826     return ret;
 827 }
 828
 829 static void about(frontend *fe)
 830 {
 831     int i;
 832     WNDCLASS wc;
 833     MSG msg;
 834     TEXTMETRIC tm;
 835     HDC hdc;
 836     HFONT oldfont;
 837     SIZE size;
 838     int gm, id;
 839     int winwidth, winheight, y;
 840     int height, width, maxwid;
 841     const char *strings[16];
 842     int lengths[16];
 843     int nstrings = 0;
 844     char titlebuf[512];
 845
 846     sprintf(titlebuf, "About %.250s", thegame.name);
 847
 848     strings[nstrings++] = thegame.name;
 849     strings[nstrings++] = "from Simon Tatham's Portable Puzzle Collection";
 850     strings[nstrings++] = ver;
 851
 852     wc.style = CS_DBLCLKS | CS_SAVEBITS | CS_BYTEALIGNWINDOW;
 853     wc.lpfnWndProc = DefDlgProc;
 854     wc.cbClsExtra = 0;
 855     wc.cbWndExtra = DLGWINDOWEXTRA + 8;
 856     wc.hInstance = fe->inst;
 857     wc.hIcon = NULL;
 858     wc.hCursor = LoadCursor(NULL, IDC_ARROW);
 859     wc.hbrBackground = (HBRUSH) (COLOR_BACKGROUND +1);
 860     wc.lpszMenuName = NULL;
 861     wc.lpszClassName = "GameAboutBox";
 862     RegisterClass(&wc);
 863
 864     hdc = GetDC(fe->hwnd);
 865     SetMapMode(hdc, MM_TEXT);
 866
 867     fe->dlg_done = FALSE;
 868
 869     fe->cfgfont = CreateFont(-MulDiv(8, GetDeviceCaps(hdc, LOGPIXELSY), 72),
 870                              0, 0, 0, 0,
 871                              FALSE, FALSE, FALSE, DEFAULT_CHARSET,
 872                              OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
 873                              DEFAULT_QUALITY,
 874                              FF_SWISS,
 875                              "MS Shell Dlg");
 876
 877     oldfont = SelectObject(hdc, fe->cfgfont);
 878     if (GetTextMetrics(hdc, &tm)) {
 879         height = tm.tmAscent + tm.tmDescent;
 880         width = tm.tmAveCharWidth;
 881     } else {
 882         height = width = 30;
 883     }
 884
 885     /*
 886      * Figure out the layout of the About box by measuring the
 887      * length of each piece of text.
 888      */
 889     maxwid = 0;
 890     winheight = height/2;
 891
 892     for (i = 0; i < nstrings; i++) {
 893         if (GetTextExtentPoint32(hdc, strings[i], strlen(strings[i]), &size))
 894             lengths[i] = size.cx;
 895         else
 896             lengths[i] = 0;            /* *shrug* */
 897         if (maxwid < lengths[i])
 898             maxwid = lengths[i];
 899         winheight += height * 3 / 2 + (height / 2);
 900     }
 901
 902     winheight += height + height * 7 / 4;      /* OK button */
 903     winwidth = maxwid + 4*width;
 904
 905     SelectObject(hdc, oldfont);
 906     ReleaseDC(fe->hwnd, hdc);
 907
 908     /*
 909      * Create the dialog, now that we know its size.
 910      */
 911     {
 912         RECT r, r2;
 913
 914         r.left = r.top = 0;
 915         r.right = winwidth;
 916         r.bottom = winheight;
 917
 918         AdjustWindowRectEx(&r, (WS_OVERLAPPEDWINDOW /*|
 919                                 DS_MODALFRAME | WS_POPUP | WS_VISIBLE |
 920                                 WS_CAPTION | WS_SYSMENU*/) &~
 921                            (WS_MAXIMIZEBOX | WS_OVERLAPPED),
 922                            FALSE, 0);
 923
 924         /*
 925          * Centre the dialog on its parent window.
 926          */
 927         r.right -= r.left;
 928         r.bottom -= r.top;
 929         GetWindowRect(fe->hwnd, &r2);
 930         r.left = (r2.left + r2.right - r.right) / 2;
 931         r.top = (r2.top + r2.bottom - r.bottom) / 2;
 932         r.right += r.left;
 933         r.bottom += r.top;
 934
 935         fe->cfgbox = CreateWindowEx(0, wc.lpszClassName, titlebuf,
 936                                     DS_MODALFRAME | WS_POPUP | WS_VISIBLE |
 937                                     WS_CAPTION | WS_SYSMENU,
 938                                     r.left, r.top,
 939                                     r.right-r.left, r.bottom-r.top,
 940                                     fe->hwnd, NULL, fe->inst, NULL);
 941     }
 942
 943     SendMessage(fe->cfgbox, WM_SETFONT, (WPARAM)fe->cfgfont, FALSE);
 944
 945     SetWindowLong(fe->cfgbox, GWL_USERDATA, (LONG)fe);
 946     SetWindowLong(fe->cfgbox, DWL_DLGPROC, (LONG)AboutDlgProc);
 947
 948     id = 1000;
 949     y = height/2;
 950     for (i = 0; i < nstrings; i++) {
 951         int border = width*2 + (maxwid - lengths[i]) / 2;
 952         mkctrl(fe, border, border+lengths[i], y+height*1/8, y+height*9/8,
 953                "Static", 0, 0, strings[i], id++);
 954         y += height*3/2;
 955
 956         assert(y < winheight);
 957         y += height/2;
 958     }
 959
 960     y += height/2;                     /* extra space before OK */
 961     mkctrl(fe, width*2, maxwid+width*2, y, y+height*7/4, "BUTTON",
 962            BS_PUSHBUTTON | BS_NOTIFY | WS_TABSTOP | BS_DEFPUSHBUTTON, 0,
 963            "OK", IDOK);
 964
 965     SendMessage(fe->cfgbox, WM_INITDIALOG, 0, 0);
 966
 967     EnableWindow(fe->hwnd, FALSE);
 968     ShowWindow(fe->cfgbox, SW_NORMAL);
 969     while ((gm=GetMessage(&msg, NULL, 0, 0)) > 0) {
 970         if (!IsDialogMessage(fe->cfgbox, &msg))
 971             DispatchMessage(&msg);
 972         if (fe->dlg_done)
 973             break;
 974     }
 975     EnableWindow(fe->hwnd, TRUE);
 976     SetForegroundWindow(fe->hwnd);
 977     DestroyWindow(fe->cfgbox);
 978     DeleteObject(fe->cfgfont);
 979 }
 980
 981 static int get_config(frontend *fe, int which)
 982 {
 983     config_item *i;
 984     struct cfg_aux *j;
 985     char *title;
 986     WNDCLASS wc;
 987     MSG msg;
 988     TEXTMETRIC tm;
 989     HDC hdc;
 990     HFONT oldfont;
 991     SIZE size;
 992     HWND ctl;
 993     int gm, id, nctrls;
 994     int winwidth, winheight, col1l, col1r, col2l, col2r, y;
 995     int height, width, maxlabel, maxcheckbox;
 996
 997     wc.style = CS_DBLCLKS | CS_SAVEBITS | CS_BYTEALIGNWINDOW;
 998     wc.lpfnWndProc = DefDlgProc;
 999     wc.cbClsExtra = 0;
1000     wc.cbWndExtra = DLGWINDOWEXTRA + 8;
1001     wc.hInstance = fe->inst;
1002     wc.hIcon = NULL;
1003     wc.hCursor = LoadCursor(NULL, IDC_ARROW);
1004     wc.hbrBackground = (HBRUSH) (COLOR_BACKGROUND +1);
1005     wc.lpszMenuName = NULL;
1006     wc.lpszClassName = "GameConfigBox";
1007     RegisterClass(&wc);
1008
1009     hdc = GetDC(fe->hwnd);
1010     SetMapMode(hdc, MM_TEXT);
1011
1012     fe->dlg_done = FALSE;
1013
1014     fe->cfgfont = CreateFont(-MulDiv(8, GetDeviceCaps(hdc, LOGPIXELSY), 72),
1015                              0, 0, 0, 0,
1016                              FALSE, FALSE, FALSE, DEFAULT_CHARSET,
1017                              OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
1018                              DEFAULT_QUALITY,
1019                              FF_SWISS,
1020                              "MS Shell Dlg");
1021
1022     oldfont = SelectObject(hdc, fe->cfgfont);
1023     if (GetTextMetrics(hdc, &tm)) {
1024         height = tm.tmAscent + tm.tmDescent;
1025         width = tm.tmAveCharWidth;
1026     } else {
1027         height = width = 30;
1028     }
1029
1030     fe->cfg = midend_get_config(fe->me, which, &title);
1031     fe->cfg_which = which;
1032
1033     /*
1034      * Figure out the layout of the config box by measuring the
1035      * length of each piece of text.
1036      */
1037     maxlabel = maxcheckbox = 0;
1038     winheight = height/2;
1039
1040     for (i = fe->cfg; i->type != C_END; i++) {
1041         switch (i->type) {
1042           case C_STRING:
1043           case C_CHOICES:
1044             /*
1045              * Both these control types have a label filling only
1046              * the left-hand column of the box.
1047              */
1048             if (GetTextExtentPoint32(hdc, i->name, strlen(i->name), &size) &&
1049                 maxlabel < size.cx)
1050                 maxlabel = size.cx;
1051             winheight += height * 3 / 2 + (height / 2);
1052             break;
1053
1054           case C_BOOLEAN:
1055             /*
1056              * Checkboxes take up the whole of the box width.
1057              */
1058             if (GetTextExtentPoint32(hdc, i->name, strlen(i->name), &size) &&
1059                 maxcheckbox < size.cx)
1060                 maxcheckbox = size.cx;
1061             winheight += height + (height / 2);
1062             break;
1063         }
1064     }
1065
1066     winheight += height + height * 7 / 4;      /* OK / Cancel buttons */
1067
1068     col1l = 2*width;
1069     col1r = col1l + maxlabel;
1070     col2l = col1r + 2*width;
1071     col2r = col2l + 30*width;
1072     if (col2r < col1l+2*height+maxcheckbox)
1073         col2r = col1l+2*height+maxcheckbox;
1074     winwidth = col2r + 2*width;
1075
1076     SelectObject(hdc, oldfont);
1077     ReleaseDC(fe->hwnd, hdc);
1078
1079     /*
1080      * Create the dialog, now that we know its size.
1081      */
1082     {
1083         RECT r, r2;
1084
1085         r.left = r.top = 0;
1086         r.right = winwidth;
1087         r.bottom = winheight;
1088
1089         AdjustWindowRectEx(&r, (WS_OVERLAPPEDWINDOW /*|
1090                                 DS_MODALFRAME | WS_POPUP | WS_VISIBLE |
1091                                 WS_CAPTION | WS_SYSMENU*/) &~
1092                            (WS_MAXIMIZEBOX | WS_OVERLAPPED),
1093                            FALSE, 0);
1094
1095         /*
1096          * Centre the dialog on its parent window.
1097          */
1098         r.right -= r.left;
1099         r.bottom -= r.top;
1100         GetWindowRect(fe->hwnd, &r2);
1101         r.left = (r2.left + r2.right - r.right) / 2;
1102         r.top = (r2.top + r2.bottom - r.bottom) / 2;
1103         r.right += r.left;
1104         r.bottom += r.top;
1105
1106         fe->cfgbox = CreateWindowEx(0, wc.lpszClassName, title,
1107                                     DS_MODALFRAME | WS_POPUP | WS_VISIBLE |
1108                                     WS_CAPTION | WS_SYSMENU,
1109                                     r.left, r.top,
1110                                     r.right-r.left, r.bottom-r.top,
1111                                     fe->hwnd, NULL, fe->inst, NULL);
1112         sfree(title);
1113     }
1114
1115     SendMessage(fe->cfgbox, WM_SETFONT, (WPARAM)fe->cfgfont, FALSE);
1116
1117     SetWindowLong(fe->cfgbox, GWL_USERDATA, (LONG)fe);
1118     SetWindowLong(fe->cfgbox, DWL_DLGPROC, (LONG)ConfigDlgProc);
1119
1120     /*
1121      * Count the controls so we can allocate cfgaux.
1122      */
1123     for (nctrls = 0, i = fe->cfg; i->type != C_END; i++)
1124         nctrls++;
1125     fe->cfgaux = snewn(nctrls, struct cfg_aux);
1126
1127     id = 1000;
1128     y = height/2;
1129     for (i = fe->cfg, j = fe->cfgaux; i->type != C_END; i++, j++) {
1130         switch (i->type) {
1131           case C_STRING:
1132             /*
1133              * Edit box with a label beside it.
1134              */
1135             mkctrl(fe, col1l, col1r, y+height*1/8, y+height*9/8,
1136                    "Static", 0, 0, i->name, id++);
1137             ctl = mkctrl(fe, col2l, col2r, y, y+height*3/2,
1138                          "EDIT", WS_TABSTOP | ES_AUTOHSCROLL,
1139                          WS_EX_CLIENTEDGE, "", (j->ctlid = id++));
1140             SetWindowText(ctl, i->sval);
1141             y += height*3/2;
1142             break;
1143
1144           case C_BOOLEAN:
1145             /*
1146              * Simple checkbox.
1147              */
1148             mkctrl(fe, col1l, col2r, y, y+height, "BUTTON",
1149                    BS_NOTIFY | BS_AUTOCHECKBOX | WS_TABSTOP,
1150                    0, i->name, (j->ctlid = id++));
1151             CheckDlgButton(fe->cfgbox, j->ctlid, (i->ival != 0));
1152             y += height;
1153             break;
1154
1155           case C_CHOICES:
1156             /*
1157              * Drop-down list with a label beside it.
1158              */
1159             mkctrl(fe, col1l, col1r, y+height*1/8, y+height*9/8,
1160                    "STATIC", 0, 0, i->name, id++);
1161             ctl = mkctrl(fe, col2l, col2r, y, y+height*41/2,
1162                          "COMBOBOX", WS_TABSTOP |
1163                          CBS_DROPDOWNLIST | CBS_HASSTRINGS,
1164                          WS_EX_CLIENTEDGE, "", (j->ctlid = id++));
1165             {
1166                 char c, *p, *q, *str;
1167
1168                 SendMessage(ctl, CB_RESETCONTENT, 0, 0);
1169                 p = i->sval;
1170                 c = *p++;
1171                 while (*p) {
1172                     q = p;
1173                     while (*q && *q != c) q++;
1174                     str = snewn(q-p+1, char);
1175                     strncpy(str, p, q-p);
1176                     str[q-p] = '\0';
1177                     SendMessage(ctl, CB_ADDSTRING, 0, (LPARAM)str);
1178                     sfree(str);
1179                     if (*q) q++;
1180                     p = q;
1181                 }
1182             }
1183
1184             SendMessage(ctl, CB_SETCURSEL, i->ival, 0);
1185
1186             y += height*3/2;
1187             break;
1188         }
1189
1190         assert(y < winheight);
1191         y += height/2;
1192     }
1193
1194     y += height/2;                     /* extra space before OK and Cancel */
1195     mkctrl(fe, col1l, (col1l+col2r)/2-width, y, y+height*7/4, "BUTTON",
1196            BS_PUSHBUTTON | BS_NOTIFY | WS_TABSTOP | BS_DEFPUSHBUTTON, 0,
1197            "OK", IDOK);
1198     mkctrl(fe, (col1l+col2r)/2+width, col2r, y, y+height*7/4, "BUTTON",
1199            BS_PUSHBUTTON | BS_NOTIFY | WS_TABSTOP, 0, "Cancel", IDCANCEL);
1200
1201     SendMessage(fe->cfgbox, WM_INITDIALOG, 0, 0);
1202
1203     EnableWindow(fe->hwnd, FALSE);
1204     ShowWindow(fe->cfgbox, SW_NORMAL);
1205     while ((gm=GetMessage(&msg, NULL, 0, 0)) > 0) {
1206         if (!IsDialogMessage(fe->cfgbox, &msg))
1207             DispatchMessage(&msg);
1208         if (fe->dlg_done)
1209             break;
1210     }
1211     EnableWindow(fe->hwnd, TRUE);
1212     SetForegroundWindow(fe->hwnd);
1213     DestroyWindow(fe->cfgbox);
1214     DeleteObject(fe->cfgfont);
1215
1216     free_cfg(fe->cfg);
1217     sfree(fe->cfgaux);
1218
1219     return (fe->dlg_done == 2);
1220 }
1221
1222 static void new_game_size(frontend *fe)
1223 {
1224     RECT r, sr;
1225     HDC hdc;
1226     int x, y;
1227
1228     x = y = INT_MAX;
1229     midend_size(fe->me, &x, &y, FALSE);
1230
1231     r.left = r.top = 0;
1232     r.right = x;
1233     r.bottom = y;
1234     AdjustWindowRectEx(&r, WS_OVERLAPPEDWINDOW &~
1235                        (WS_THICKFRAME | WS_MAXIMIZEBOX |
1236                         WS_OVERLAPPED),
1237                        TRUE, 0);
1238
1239     if (fe->statusbar != NULL) {
1240         GetWindowRect(fe->statusbar, &sr);
1241     } else {
1242         sr.left = sr.right = sr.top = sr.bottom = 0;
1243     }
1244     SetWindowPos(fe->hwnd, NULL, 0, 0,
1245                  r.right - r.left,
1246                  r.bottom - r.top + sr.bottom - sr.top,
1247                  SWP_NOMOVE | SWP_NOZORDER);
1248
1249     check_window_size(fe, &x, &y);
1250
1251     if (fe->statusbar != NULL)
1252         SetWindowPos(fe->statusbar, NULL, 0, y, x,
1253                      sr.bottom - sr.top, SWP_NOZORDER);
1254
1255     DeleteObject(fe->bitmap);
1256
1257     hdc = GetDC(fe->hwnd);
1258     fe->bitmap = CreateCompatibleBitmap(hdc, x, y);
1259     ReleaseDC(fe->hwnd, hdc);
1260
1261     midend_redraw(fe->me);
1262 }
1263
1264 static void new_game_type(frontend *fe)
1265 {
1266     midend_new_game(fe->me);
1267     new_game_size(fe);
1268 }
1269
1270 static int is_alt_pressed(void)
1271 {
1272     BYTE keystate[256];
1273     int r = GetKeyboardState(keystate);
1274     if (!r)
1275         return FALSE;
1276     if (keystate[VK_MENU] & 0x80)
1277         return TRUE;
1278     if (keystate[VK_RMENU] & 0x80)
1279         return TRUE;
1280     return FALSE;
1281 }
1282
1283 static void savefile_write(void *wctx, void *buf, int len)
1284 {
1285     FILE *fp = (FILE *)wctx;
1286     fwrite(buf, 1, len, fp);
1287 }
1288
1289 static int savefile_read(void *wctx, void *buf, int len)
1290 {
1291     FILE *fp = (FILE *)wctx;
1292     int ret;
1293
1294     ret = fread(buf, 1, len, fp);
1295     return (ret == len);
1296 }
1297
1298 static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
1299                                 WPARAM wParam, LPARAM lParam)
1300 {
1301     frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA);
1302     int cmd;
1303
1304     switch (message) {
1305       case WM_CLOSE:
1306         DestroyWindow(hwnd);
1307         return 0;
1308       case WM_COMMAND:
1309         cmd = wParam & ~0xF;           /* low 4 bits reserved to Windows */
1310         switch (cmd) {
1311           case IDM_NEW:
1312             if (!midend_process_key(fe->me, 0, 0, 'n'))
1313                 PostQuitMessage(0);
1314             break;
1315           case IDM_RESTART:
1316             midend_restart_game(fe->me);
1317             break;
1318           case IDM_UNDO:
1319             if (!midend_process_key(fe->me, 0, 0, 'u'))
1320                 PostQuitMessage(0);
1321             break;
1322           case IDM_REDO:
1323             if (!midend_process_key(fe->me, 0, 0, '\x12'))
1324                 PostQuitMessage(0);
1325             break;
1326           case IDM_COPY:
1327             {
1328                 char *text = midend_text_format(fe->me);
1329                 if (text)
1330                     write_clip(hwnd, text);
1331                 else
1332                     MessageBeep(MB_ICONWARNING);
1333                 sfree(text);
1334             }
1335             break;
1336           case IDM_SOLVE:
1337             {
1338                 char *msg = midend_solve(fe->me);
1339                 if (msg)
1340                     MessageBox(hwnd, msg, "Unable to solve",
1341                                MB_ICONERROR | MB_OK);
1342             }
1343             break;
1344           case IDM_QUIT:
1345             if (!midend_process_key(fe->me, 0, 0, 'q'))
1346                 PostQuitMessage(0);
1347             break;
1348           case IDM_CONFIG:
1349             if (get_config(fe, CFG_SETTINGS))
1350                 new_game_type(fe);
1351             break;
1352           case IDM_SEED:
1353             if (get_config(fe, CFG_SEED))
1354                 new_game_type(fe);
1355             break;
1356           case IDM_DESC:
1357             if (get_config(fe, CFG_DESC))
1358                 new_game_type(fe);
1359             break;
1360           case IDM_ABOUT:
1361             about(fe);
1362             break;
1363           case IDM_LOAD:
1364           case IDM_SAVE:
1365             {
1366                 OPENFILENAME of;
1367                 char filename[FILENAME_MAX];
1368                 int ret;
1369
1370                 memset(&of, 0, sizeof(of));
1371                 of.hwndOwner = hwnd;
1372                 of.lpstrFilter = "All Files (*.*)\0*\0\0\0";
1373                 of.lpstrCustomFilter = NULL;
1374                 of.nFilterIndex = 1;
1375                 of.lpstrFile = filename;
1376                 filename[0] = '\0';
1377                 of.nMaxFile = lenof(filename);
1378                 of.lpstrFileTitle = NULL;
1379                 of.lpstrTitle = (cmd == IDM_SAVE ?
1380                                  "Enter name of game file to save" :
1381                                  "Enter name of saved game file to load");
1382                 of.Flags = 0;
1383 #ifdef OPENFILENAME_SIZE_VERSION_400
1384                 of.lStructSize = OPENFILENAME_SIZE_VERSION_400;
1385 #else
1386                 of.lStructSize = sizeof(of);
1387 #endif
1388                 of.lpstrInitialDir = NULL;
1389
1390                 if (cmd == IDM_SAVE)
1391                     ret = GetSaveFileName(&of);
1392                 else
1393                     ret = GetOpenFileName(&of);
1394
1395                 if (ret) {
1396                     if (cmd == IDM_SAVE) {
1397                         FILE *fp;
1398
1399                         if ((fp = fopen(filename, "r")) != NULL) {
1400                             char buf[256 + FILENAME_MAX];
1401                             fclose(fp);
1402                             /* file exists */
1403
1404                             sprintf(buf, "Are you sure you want to overwrite"
1405                                     " the file \"%.*s\"?",
1406                                     FILENAME_MAX, filename);
1407                             if (MessageBox(hwnd, buf, "Question",
1408                                            MB_YESNO | MB_ICONQUESTION)
1409                                 != IDYES)
1410                                 break;
1411                         }
1412
1413                         fp = fopen(filename, "w");
1414
1415                         if (!fp) {
1416                             MessageBox(hwnd, "Unable to open save file",
1417                                        "Error", MB_ICONERROR | MB_OK);
1418                             break;
1419                         }
1420
1421                         midend_serialise(fe->me, savefile_write, fp);
1422
1423                         fclose(fp);
1424                     } else {
1425                         FILE *fp = fopen(filename, "r");
1426                         char *err;
1427
1428                         if (!fp) {
1429                             MessageBox(hwnd, "Unable to open saved game file",
1430                                        "Error", MB_ICONERROR | MB_OK);
1431                             break;
1432                         }
1433
1434                         err = midend_deserialise(fe->me, savefile_read, fp);
1435
1436                         fclose(fp);
1437
1438                         if (err) {
1439                             MessageBox(hwnd, err, "Error", MB_ICONERROR|MB_OK);
1440                             break;
1441                         }
1442
1443                         new_game_size(fe);
1444                     }
1445                 }
1446             }
1447
1448             break;
1449           case IDM_HELPC:
1450             assert(fe->help_path);
1451             WinHelp(hwnd, fe->help_path,
1452                     fe->help_has_contents ? HELP_FINDER : HELP_CONTENTS, 0);
1453             break;
1454           case IDM_GAMEHELP:
1455             assert(fe->help_path);
1456             assert(thegame.winhelp_topic);
1457             {
1458                 char *cmd = snewn(10+strlen(thegame.winhelp_topic), char);
1459                 sprintf(cmd, "JI(`',`%s')", thegame.winhelp_topic);
1460                 WinHelp(hwnd, fe->help_path, HELP_COMMAND, (DWORD)cmd);
1461                 sfree(cmd);
1462             }
1463             break;
1464           default:
1465             {
1466                 int p = ((wParam &~ 0xF) - IDM_PRESETS) / 0x10;
1467
1468                 if (p >= 0 && p < fe->npresets) {
1469                     midend_set_params(fe->me, fe->presets[p]);
1470                     new_game_type(fe);
1471                 }
1472             }
1473             break;
1474         }
1475         break;
1476       case WM_DESTROY:
1477         PostQuitMessage(0);
1478         return 0;
1479       case WM_PAINT:
1480         {
1481             PAINTSTRUCT p;
1482             HDC hdc, hdc2;
1483             HBITMAP prevbm;
1484
1485             hdc = BeginPaint(hwnd, &p);
1486             hdc2 = CreateCompatibleDC(hdc);
1487             prevbm = SelectObject(hdc2, fe->bitmap);
1488             BitBlt(hdc,
1489                    p.rcPaint.left, p.rcPaint.top,
1490                    p.rcPaint.right - p.rcPaint.left,
1491                    p.rcPaint.bottom - p.rcPaint.top,
1492                    hdc2,
1493                    p.rcPaint.left, p.rcPaint.top,
1494                    SRCCOPY);
1495             SelectObject(hdc2, prevbm);
1496             DeleteDC(hdc2);
1497             EndPaint(hwnd, &p);
1498         }
1499         return 0;
1500       case WM_KEYDOWN:
1501         {
1502             int key = -1;
1503             BYTE keystate[256];
1504             int r = GetKeyboardState(keystate);
1505             int shift = (r && (keystate[VK_SHIFT] & 0x80)) ? MOD_SHFT : 0;
1506             int ctrl = (r && (keystate[VK_CONTROL] & 0x80)) ? MOD_CTRL : 0;
1507
1508             switch (wParam) {
1509               case VK_LEFT:
1510                 if (!(lParam & 0x01000000))
1511                     key = MOD_NUM_KEYPAD | '4';
1512                 else
1513                     key = shift | ctrl | CURSOR_LEFT;
1514                 break;
1515               case VK_RIGHT:
1516                 if (!(lParam & 0x01000000))
1517                     key = MOD_NUM_KEYPAD | '6';
1518                 else
1519                     key = shift | ctrl | CURSOR_RIGHT;
1520                 break;
1521               case VK_UP:
1522                 if (!(lParam & 0x01000000))
1523                     key = MOD_NUM_KEYPAD | '8';
1524                 else
1525                     key = shift | ctrl | CURSOR_UP;
1526                 break;
1527               case VK_DOWN:
1528                 if (!(lParam & 0x01000000))
1529                     key = MOD_NUM_KEYPAD | '2';
1530                 else
1531                     key = shift | ctrl | CURSOR_DOWN;
1532                 break;
1533                 /*
1534                  * Diagonal keys on the numeric keypad.
1535                  */
1536               case VK_PRIOR:
1537                 if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '9';
1538                 break;
1539               case VK_NEXT:
1540                 if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '3';
1541                 break;
1542               case VK_HOME:
1543                 if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '7';
1544                 break;
1545               case VK_END:
1546                 if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '1';
1547                 break;
1548               case VK_INSERT:
1549                 if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '0';
1550                 break;
1551               case VK_CLEAR:
1552                 if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '5';
1553                 break;
1554                 /*
1555                  * Numeric keypad keys with Num Lock on.
1556                  */
1557               case VK_NUMPAD4: key = MOD_NUM_KEYPAD | '4'; break;
1558               case VK_NUMPAD6: key = MOD_NUM_KEYPAD | '6'; break;
1559               case VK_NUMPAD8: key = MOD_NUM_KEYPAD | '8'; break;
1560               case VK_NUMPAD2: key = MOD_NUM_KEYPAD | '2'; break;
1561               case VK_NUMPAD5: key = MOD_NUM_KEYPAD | '5'; break;
1562               case VK_NUMPAD9: key = MOD_NUM_KEYPAD | '9'; break;
1563               case VK_NUMPAD3: key = MOD_NUM_KEYPAD | '3'; break;
1564               case VK_NUMPAD7: key = MOD_NUM_KEYPAD | '7'; break;
1565               case VK_NUMPAD1: key = MOD_NUM_KEYPAD | '1'; break;
1566               case VK_NUMPAD0: key = MOD_NUM_KEYPAD | '0'; break;
1567             }
1568
1569             if (key != -1) {
1570                 if (!midend_process_key(fe->me, 0, 0, key))
1571                     PostQuitMessage(0);
1572             } else {
1573                 MSG m;
1574                 m.hwnd = hwnd;
1575                 m.message = WM_KEYDOWN;
1576                 m.wParam = wParam;
1577                 m.lParam = lParam & 0xdfff;
1578                 TranslateMessage(&m);
1579             }
1580         }
1581         break;
1582       case WM_LBUTTONDOWN:
1583       case WM_RBUTTONDOWN:
1584       case WM_MBUTTONDOWN:
1585         {
1586             int button;
1587
1588             /*
1589              * Shift-clicks count as middle-clicks, since otherwise
1590              * two-button Windows users won't have any kind of
1591              * middle click to use.
1592              */
1593             if (message == WM_MBUTTONDOWN || (wParam & MK_SHIFT))
1594                 button = MIDDLE_BUTTON;
1595             else if (message == WM_RBUTTONDOWN || is_alt_pressed())
1596                 button = RIGHT_BUTTON;
1597             else
1598                 button = LEFT_BUTTON;
1599
1600             if (!midend_process_key(fe->me, (signed short)LOWORD(lParam),
1601                                     (signed short)HIWORD(lParam), button))
1602                 PostQuitMessage(0);
1603
1604             SetCapture(hwnd);
1605         }
1606         break;
1607       case WM_LBUTTONUP:
1608       case WM_RBUTTONUP:
1609       case WM_MBUTTONUP:
1610         {
1611             int button;
1612
1613             /*
1614              * Shift-clicks count as middle-clicks, since otherwise
1615              * two-button Windows users won't have any kind of
1616              * middle click to use.
1617              */
1618             if (message == WM_MBUTTONUP || (wParam & MK_SHIFT))
1619                 button = MIDDLE_RELEASE;
1620             else if (message == WM_RBUTTONUP || is_alt_pressed())
1621                 button = RIGHT_RELEASE;
1622             else
1623                 button = LEFT_RELEASE;
1624
1625             if (!midend_process_key(fe->me, (signed short)LOWORD(lParam),
1626                                     (signed short)HIWORD(lParam), button))
1627                 PostQuitMessage(0);
1628
1629             ReleaseCapture();
1630         }
1631         break;
1632       case WM_MOUSEMOVE:
1633         {
1634             int button;
1635
1636             if (wParam & (MK_MBUTTON | MK_SHIFT))
1637                 button = MIDDLE_DRAG;
1638             else if (wParam & MK_RBUTTON || is_alt_pressed())
1639                 button = RIGHT_DRAG;
1640             else
1641                 button = LEFT_DRAG;
1642
1643             if (!midend_process_key(fe->me, (signed short)LOWORD(lParam),
1644                                     (signed short)HIWORD(lParam), button))
1645                 PostQuitMessage(0);
1646         }
1647         break;
1648       case WM_CHAR:
1649         if (!midend_process_key(fe->me, 0, 0, (unsigned char)wParam))
1650             PostQuitMessage(0);
1651         return 0;
1652       case WM_TIMER:
1653         if (fe->timer) {
1654             DWORD now = GetTickCount();
1655             float elapsed = (float) (now - fe->timer_last_tickcount) * 0.001F;
1656             midend_timer(fe->me, elapsed);
1657             fe->timer_last_tickcount = now;
1658         }
1659         return 0;
1660     }
1661
1662     return DefWindowProc(hwnd, message, wParam, lParam);
1663 }
1664
1665 int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
1666 {
1667     MSG msg;
1668     char *error;
1669
1670     InitCommonControls();
1671
1672     if (!prev) {
1673         WNDCLASS wndclass;
1674
1675         wndclass.style = 0;
1676         wndclass.lpfnWndProc = WndProc;
1677         wndclass.cbClsExtra = 0;
1678         wndclass.cbWndExtra = 0;
1679         wndclass.hInstance = inst;
1680         wndclass.hIcon = LoadIcon(inst, IDI_APPLICATION);
1681         wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
1682         wndclass.hbrBackground = NULL;
1683         wndclass.lpszMenuName = NULL;
1684         wndclass.lpszClassName = thegame.name;
1685
1686         RegisterClass(&wndclass);
1687     }
1688
1689     while (*cmdline && isspace(*cmdline))
1690         cmdline++;
1691
1692     if (!new_window(inst, *cmdline ? cmdline : NULL, &error)) {
1693         char buf[128];
1694         sprintf(buf, "%.100s Error", thegame.name);
1695         MessageBox(NULL, error, buf, MB_OK|MB_ICONERROR);
1696         return 1;
1697     }
1698
1699     while (GetMessage(&msg, NULL, 0, 0)) {
1700         DispatchMessage(&msg);
1701     }
1702
1703     return msg.wParam;
1704 }