callback.c

   1 #include <gtk/gtk.h>
   2 #include "common.h"
   3 #include <errno.h>
   4 #include "backend.h"
   5
   6 #ifdef ENABLE_NLS
   7 # define  _(s) gettext (s)
   8 # define N_(s) gettext_noop (s)
   9 #else
  10 # define  _(s) (s)
  11 # define N_(s)  s
  12 #endif
  13
  14
  15 extern GtkWidget  *about;
  16 extern GtkWidget  *GUI_Window;
  17
  18 extern char *programVersion;
  19 extern int errorExitStatus;
  20 extern int promotionUp;
  21 extern int fromX;
  22 extern int fromY;
  23 extern int toX;
  24 extern int toY;
  25
  26 void
  27 QuitProc (object, user_data)
  28      GtkObject *object;
  29      gpointer user_data;
  30 {
  31   gtk_main_quit();
  32   ExitEvent(0);
  33 }
  34
  35 void AboutProc (object, user_data)
  36      GtkObject *object;
  37      gpointer user_data;
  38 {
  39   GtkWidget               *about;
  40
  41   const gchar *authors[] = {"Tim Mann <tim@tim-mann.org>",
  42                             "John Chanak",
  43                             "Evan Welsh <Evan.Welsh@msdw.com>",
  44                             "Elmar Bartel <bartel@informatik.tu-muenchen.de>",
  45                             "Jochen Wiedmann",
  46                             "Frank McIngvale",
  47                             "Hugh Fisher <Hugh.Fisher@cs.anu.edu.au>",
  48                             "Allessandro Scotti",
  49                             "H.G. Muller <h.g.muller AT hccnet DOT nl>",
  50                             "Eric Mullins <emwine AT earthlink DOT net>",
  51                             "Arun Persaud <arun@nubati.net>"};
  52
  53   /* set up about window */
  54   about =  GTK_WIDGET(gtk_about_dialog_new());
  55
  56   /* fill in some information */
  57   char buf[MSG_SIZ];
  58 #if ZIPPY
  59   char *zippy = " (with Zippy code)";
  60 #else
  61   char *zippy = "";
  62 #endif
  63   sprintf(buf, "%s%s",  programVersion, zippy);
  64
  65   gtk_about_dialog_set_version(GTK_ABOUT_DIALOG(about),buf);
  66
  67   gtk_about_dialog_set_copyright(GTK_ABOUT_DIALOG(about),
  68                                  "Copyright 1991 Digital Equipment Corporation\n"
  69                                  "Enhancements Copyright 1992-2009 Free Software Foundation\n"
  70                                  "Enhancements Copyright 2005 Alessandro Scotti");
  71   gtk_about_dialog_set_website(GTK_ABOUT_DIALOG(about),"http://www.gnu.org/software/xboard/");
  72   gtk_about_dialog_set_authors(GTK_ABOUT_DIALOG(about),authors);
  73   gtk_about_dialog_set_translator_credits(GTK_ABOUT_DIALOG(about),
  74                                           " A. Alper (turkish)\n"
  75                                           " A. Persaud (german)\n");
  76
  77   /* end set up about window */
  78   gtk_dialog_run(GTK_DIALOG (about));
  79   gtk_widget_destroy(about);
  80 }
  81
  82 void LoadNextGameProc(object, user_data)
  83      GtkObject *object;
  84      gpointer user_data;
  85 {
  86     ReloadGame(1);
  87     return;
  88 }
  89
  90 void LoadPrevGameProc(object, user_data)
  91      GtkObject *object;
  92      gpointer user_data;
  93 {
  94     ReloadGame(-1);
  95     return;
  96 }
  97
  98 void ReloadGameProc(object, user_data)
  99      GtkObject *object;
 100      gpointer user_data;
 101 {
 102     ReloadGame(0);
 103     return;
 104 }
 105
 106
 107 gboolean CloseWindowProc(GtkWidget *button)
 108 {
 109     gtk_widget_destroy(gtk_widget_get_toplevel(button));
 110     return TRUE;
 111 }
 112
 113 void
 114 ResetProc (object, user_data)
 115      GtkObject *object;
 116      gpointer user_data;
 117 {
 118   ResetGameEvent();
 119   AnalysisPopDown();
 120 }
 121
 122 void WhiteClockProc(object, user_data)
 123      GtkObject *object;
 124      gpointer user_data;
 125 {
 126     if (gameMode == EditPosition || gameMode == IcsExamining) {
 127         SetWhiteToPlayEvent();
 128     } else if (gameMode == IcsPlayingBlack || gameMode == MachinePlaysWhite) {
 129         CallFlagEvent();
 130     }
 131 }
 132
 133 void BlackClockProc(object, user_data)
 134      GtkObject *object;
 135      gpointer user_data;
 136 {
 137     if (gameMode == EditPosition || gameMode == IcsExamining) {
 138         SetBlackToPlayEvent();
 139     } else if (gameMode == IcsPlayingWhite || gameMode == MachinePlaysBlack) {
 140         CallFlagEvent();
 141     }
 142 }
 143
 144
 145 void ShowCoordsProc(object, user_data)
 146      GtkObject *object;
 147      gpointer user_data;
 148 {
 149     appData.showCoords = !appData.showCoords;
 150
 151     DrawPosition(True, NULL);
 152 }
 153
 154 void ErrorPopDownProc(object, user_data)
 155      GtkObject *object;
 156      gpointer user_data;
 157 {
 158   gtk_widget_destroy(GTK_WIDGET(object));
 159   ErrorPopDown();
 160 }
 161
 162 void PauseProc(object, user_data)
 163      GtkObject *object;
 164      gpointer user_data;
 165 {
 166     // todo this toggling of the pause button doesn't seem to work?
 167     // e.g. select pause from buttonbar doesn't activate menumode.pause
 168   PauseEvent();
 169 }
 170
 171
 172 void LoadGameProc(object, user_data)
 173      GtkObject *object;
 174      gpointer user_data;
 175 {
 176   GtkWidget *dialog;
 177   dialog = gtk_file_chooser_dialog_new (_("Load game file name?"),
 178                                         GTK_WINDOW(GUI_Window),
 179                                         GTK_FILE_CHOOSER_ACTION_OPEN,
 180                                         GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 181                                         GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
 182                                         NULL);
 183   if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT)
 184     {
 185       char *filename;
 186       FILE *f;
 187
 188       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
 189
 190       //see loadgamepopup
 191       f = fopen(filename, "rb");
 192       if (f == NULL) {
 193         DisplayError(_("Failed to open file"), errno);
 194       } else {
 195         /* TODO add indec */
 196         (void) LoadGamePopUp(f, 0, filename);
 197       }
 198       g_free (filename);
 199     }
 200   gtk_widget_destroy (dialog);
 201   ModeHighlight();
 202 }
 203
 204
 205 /*************
 206  * EVENTS
 207  *************/
 208
 209 void EventProc(window, event, data)
 210      GtkWindow *window;
 211      GdkEvent *event;
 212      gpointer data;
 213 {
 214   /* todo do we still need this?
 215     if (!XtIsRealized(widget))
 216       return;
 217   */
 218
 219     switch (event->type) {
 220       case GDK_EXPOSE:
 221         if (event->expose.count > 0) return;  /* no clipping is done */
 222         DrawPosition(True, NULL);
 223         break;
 224       default:
 225         return;
 226     }
 227 }
 228
 229
 230 /*
 231  * event handler for parsing user moves
 232  */
 233 void UserMoveProc(window, event, data)
 234      GtkWindow *window;
 235      GdkEvent *event;
 236      gpointer data;
 237 {
 238     int x, y;
 239     Boolean saveAnimate;
 240     static int second = 0;
 241
 242     if (errorExitStatus != -1) return;
 243
 244     if (event->type == GDK_BUTTON_PRESS) ErrorPopDown();
 245
 246     if (promotionUp)
 247       {
 248         if (event->type == GDK_BUTTON_PRESS)
 249           {
 250             /* todo add promotionshellwidget
 251                XtPopdown(promotionShell);
 252                XtDestroyWidget(promotionShell); */
 253             promotionUp = False;
 254             ClearHighlights();
 255             fromX = fromY = -1;
 256           }
 257         else
 258           {
 259             return;
 260           }
 261       }
 262
 263     x = EventToSquare( (int)event->button.x, BOARD_WIDTH  );
 264     y = EventToSquare( (int)event->button.y, BOARD_HEIGHT );
 265     if (!flipView && y >= 0)
 266       {
 267         y = BOARD_HEIGHT - 1 - y;
 268       }
 269     if (flipView && x >= 0)
 270       {
 271         x = BOARD_WIDTH - 1 - x;
 272       }
 273
 274     if (fromX == -1)
 275       {
 276         if (event->type == ButtonPress)
 277           {
 278             /* First square */
 279             if (OKToStartUserMove(x, y))
 280               {
 281                 fromX = x;
 282                 fromY = y;
 283                 second = 0;
 284                 DragPieceBegin(event->button.x, event->button.y);
 285                 if (appData.highlightDragging)
 286                   {
 287                     SetHighlights(x, y, -1, -1);
 288                   }
 289               }
 290           }
 291         return;
 292       }
 293
 294     /* fromX != -1 */
 295     if (event->type == GDK_BUTTON_PRESS && gameMode != EditPosition &&
 296         x >= 0 && y >= 0) {
 297         ChessSquare fromP;
 298         ChessSquare toP;
 299         /* Check if clicking again on the same color piece */
 300         fromP = boards[currentMove][fromY][fromX];
 301         toP = boards[currentMove][y][x];
 302         if ((WhitePawn <= fromP && fromP <= WhiteKing &&
 303              WhitePawn <= toP && toP <= WhiteKing) ||
 304             (BlackPawn <= fromP && fromP <= BlackKing &&
 305              BlackPawn <= toP && toP <= BlackKing)) {
 306             /* Clicked again on same color piece -- changed his mind */
 307             second = (x == fromX && y == fromY);
 308             if (appData.highlightDragging) {
 309                 SetHighlights(x, y, -1, -1);
 310             } else {
 311                 ClearHighlights();
 312             }
 313             if (OKToStartUserMove(x, y)) {
 314                 fromX = x;
 315                 fromY = y;
 316                 DragPieceBegin(event->button.x, event->button.y);
 317             }
 318             return;
 319         }
 320     }
 321
 322     if (event->type == GDK_BUTTON_RELEASE &&    x == fromX && y == fromY)
 323       {
 324         DragPieceEnd(event->button.x, event->button.y);
 325         if (appData.animateDragging)
 326           {
 327             /* Undo animation damage if any */
 328             DrawPosition(FALSE, NULL);
 329           }
 330         if (second)
 331           {
 332             /* Second up/down in same square; just abort move */
 333             second = 0;
 334             fromX = fromY = -1;
 335             ClearHighlights();
 336             gotPremove = 0;
 337             ClearPremoveHighlights();
 338           }
 339         else
 340           {
 341             /* First upclick in same square; start click-click mode */
 342             SetHighlights(x, y, -1, -1);
 343           }
 344         return;
 345       }
 346
 347     /* Completed move */
 348     toX = x;
 349     toY = y;
 350     saveAnimate = appData.animate;
 351
 352     if (event->type == GDK_BUTTON_PRESS)
 353       {
 354         /* Finish clickclick move */
 355         if (appData.animate || appData.highlightLastMove)
 356           {
 357             SetHighlights(fromX, fromY, toX, toY);
 358           }
 359         else
 360           {
 361             ClearHighlights();
 362           }
 363       }
 364     else
 365       {
 366         /* Finish drag move */
 367         if (appData.highlightLastMove)
 368           {
 369             SetHighlights(fromX, fromY, toX, toY);
 370           }
 371         else
 372           {
 373             ClearHighlights();
 374           }
 375         DragPieceEnd(event->button.x, event->button.y);
 376         /* Don't animate move and drag both */
 377         appData.animate = FALSE;
 378       }
 379
 380     if (IsPromotion(fromX, fromY, toX, toY))
 381       {
 382         if (appData.alwaysPromoteToQueen)
 383           {
 384             UserMoveEvent(fromX, fromY, toX, toY, 'q');
 385             if (!appData.highlightLastMove || gotPremove) ClearHighlights();
 386             if (gotPremove) SetPremoveHighlights(fromX, fromY, toX, toY);
 387             fromX = fromY = -1;
 388           }
 389         else
 390           {
 391             SetHighlights(fromX, fromY, toX, toY);
 392             PromotionPopUp();
 393           }
 394       }
 395     else
 396       {
 397         UserMoveEvent(fromX, fromY, toX, toY, NULLCHAR);
 398
 399         if (!appData.highlightLastMove || gotPremove) ClearHighlights();
 400         if (gotPremove) SetPremoveHighlights(fromX, fromY, toX, toY);
 401         fromX = fromY = -1;
 402       }
 403
 404     appData.animate = saveAnimate;
 405     if (appData.animate || appData.animateDragging) {
 406         /* Undo animation damage if needed */
 407         DrawPosition(FALSE, NULL);
 408     }
 409
 410     return;
 411 }
 412