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   //  fprintf(stderr,"DEBUG: in pause\n");
 169   //  fflush(stderr);
 170   PauseEvent();
 171 }
 172
 173
 174 void LoadGameProc(object, user_data)
 175      GtkObject *object;
 176      gpointer user_data;
 177 {
 178   GtkWidget *dialog;
 179   dialog = gtk_file_chooser_dialog_new (_("Load game file name?"),
 180                                         GTK_WINDOW(GUI_Window),
 181                                         GTK_FILE_CHOOSER_ACTION_OPEN,
 182                                         GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 183                                         GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
 184                                         NULL);
 185   if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT)
 186     {
 187       char *filename;
 188       FILE *f;
 189
 190       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
 191
 192       //see loadgamepopup
 193       f = fopen(filename, "rb");
 194       if (f == NULL) {
 195         DisplayError(_("Failed to open file"), errno);
 196       } else {
 197         /* TODO add indec */
 198         (void) LoadGamePopUp(f, 0, filename);
 199       }
 200       g_free (filename);
 201     }
 202   gtk_widget_destroy (dialog);
 203   ModeHighlight();
 204 }
 205
 206
 207 /*************
 208  * EVENTS
 209  *************/
 210
 211 void EventProc(window, event, data)
 212      GtkWindow *window;
 213      GdkEvent *event;
 214      gpointer data;
 215 {
 216   /* todo do we still need this?
 217     if (!XtIsRealized(widget))
 218       return;
 219   */
 220
 221     switch (event->type) {
 222       case GDK_EXPOSE:
 223         if (event->expose.count > 0) return;  /* no clipping is done */
 224         DrawPosition(True, NULL);
 225         break;
 226       default:
 227         return;
 228     }
 229 }
 230
 231
 232 /*
 233  * event handler for parsing user moves
 234  */
 235 void UserMoveProc(window, event, data)
 236      GtkWindow *window;
 237      GdkEvent *event;
 238      gpointer data;
 239 {
 240     int x, y;
 241     Boolean saveAnimate;
 242     static int second = 0;
 243
 244     if (errorExitStatus != -1) return;
 245
 246     if (event->type == GDK_BUTTON_PRESS) ErrorPopDown();
 247
 248     if (promotionUp) {
 249         if (event->type == GDK_BUTTON_PRESS) {
 250           /* todo add promotionshellwidget
 251             XtPopdown(promotionShell);
 252             XtDestroyWidget(promotionShell); */
 253             promotionUp = False;
 254             ClearHighlights();
 255             fromX = fromY = -1;
 256         } else {
 257             return;
 258         }
 259     }
 260
 261     x = EventToSquare((int)event->button.x, BOARD_WIDTH);
 262     y = EventToSquare((int)event->button.y, BOARD_HEIGHT);
 263     if (!flipView && y >= 0) {
 264         y = BOARD_HEIGHT - 1 - y;
 265     }
 266     if (flipView && x >= 0) {
 267         x = BOARD_WIDTH - 1 - x;
 268     }
 269
 270     if (fromX == -1) {
 271         if (event->type == ButtonPress) {
 272             /* First square */
 273             if (OKToStartUserMove(x, y)) {
 274                 fromX = x;
 275                 fromY = y;
 276                 second = 0;
 277                 DragPieceBegin(event->button.x, event->button.y);
 278                 if (appData.highlightDragging) {
 279                     SetHighlights(x, y, -1, -1);
 280                 }
 281             }
 282         }
 283         return;
 284     }
 285
 286     /* fromX != -1 */
 287     if (event->type == GDK_BUTTON_PRESS && gameMode != EditPosition &&
 288         x >= 0 && y >= 0) {
 289         ChessSquare fromP;
 290         ChessSquare toP;
 291         /* Check if clicking again on the same color piece */
 292         fromP = boards[currentMove][fromY][fromX];
 293         toP = boards[currentMove][y][x];
 294         if ((WhitePawn <= fromP && fromP <= WhiteKing &&
 295              WhitePawn <= toP && toP <= WhiteKing) ||
 296             (BlackPawn <= fromP && fromP <= BlackKing &&
 297              BlackPawn <= toP && toP <= BlackKing)) {
 298             /* Clicked again on same color piece -- changed his mind */
 299             second = (x == fromX && y == fromY);
 300             if (appData.highlightDragging) {
 301                 SetHighlights(x, y, -1, -1);
 302             } else {
 303                 ClearHighlights();
 304             }
 305             if (OKToStartUserMove(x, y)) {
 306                 fromX = x;
 307                 fromY = y;
 308                 DragPieceBegin(event->button.x, event->button.y);
 309             }
 310             return;
 311         }
 312     }
 313
 314     if (event->type == GDK_BUTTON_RELEASE &&    x == fromX && y == fromY) {
 315         DragPieceEnd(event->button.x, event->button.y);
 316         if (appData.animateDragging) {
 317             /* Undo animation damage if any */
 318             DrawPosition(FALSE, NULL);
 319         }
 320         if (second) {
 321             /* Second up/down in same square; just abort move */
 322             second = 0;
 323             fromX = fromY = -1;
 324             ClearHighlights();
 325             gotPremove = 0;
 326             ClearPremoveHighlights();
 327         } else {
 328             /* First upclick in same square; start click-click mode */
 329             SetHighlights(x, y, -1, -1);
 330         }
 331         return;
 332     }
 333
 334     /* Completed move */
 335     toX = x;
 336     toY = y;
 337     saveAnimate = appData.animate;
 338     if (event->type == GDK_BUTTON_PRESS) {
 339         /* Finish clickclick move */
 340         if (appData.animate || appData.highlightLastMove) {
 341             SetHighlights(fromX, fromY, toX, toY);
 342         } else {
 343             ClearHighlights();
 344         }
 345     } else {
 346         /* Finish drag move */
 347         if (appData.highlightLastMove) {
 348             SetHighlights(fromX, fromY, toX, toY);
 349         } else {
 350             ClearHighlights();
 351         }
 352         DragPieceEnd(event->button.x, event->button.y);
 353         /* Don't animate move and drag both */
 354         appData.animate = FALSE;
 355     }
 356     if (IsPromotion(fromX, fromY, toX, toY)) {
 357         if (appData.alwaysPromoteToQueen) {
 358             UserMoveEvent(fromX, fromY, toX, toY, 'q');
 359             if (!appData.highlightLastMove || gotPremove) ClearHighlights();
 360             if (gotPremove) SetPremoveHighlights(fromX, fromY, toX, toY);
 361             fromX = fromY = -1;
 362         } else {
 363             SetHighlights(fromX, fromY, toX, toY);
 364             PromotionPopUp();
 365         }
 366     } else {
 367         UserMoveEvent(fromX, fromY, toX, toY, NULLCHAR);
 368         if (!appData.highlightLastMove || gotPremove) ClearHighlights();
 369         if (gotPremove) SetPremoveHighlights(fromX, fromY, toX, toY);
 370         fromX = fromY = -1;
 371     }
 372     appData.animate = saveAnimate;
 373     if (appData.animate || appData.animateDragging) {
 374         /* Undo animation damage if needed */
 375         DrawPosition(FALSE, NULL);
 376     }
 377 }