planarity/main.c

   1 /*
   2  *
   3  *  gPlanarity:
   4  *     The geeky little puzzle game with a big noodly crunch!
   5  *
   6  *     gPlanarity copyright (C) 2005 Monty <monty@xiph.org>
   7  *     Original Flash game by John Tantalo <john.tantalo@case.edu>
   8  *     Original game concept by Mary Radcliffe
   9  *
  10  *  gPlanarity is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2, or (at your option)
  13  *  any later version.
  14  *
  15  *  gPlanarity is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with Postfish; see the file COPYING.  If not, write to the
  22  *  Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  *
  25  */
  26
  27 #define _GNU_SOURCE
  28 #include <string.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <errno.h>
  32 #include <math.h>
  33 #include <signal.h>
  34 #include <sys/stat.h>
  35 #include <sys/types.h>
  36 #include <gtk/gtk.h>
  37 #include <gdk-pixbuf/gdk-pixbuf.h>
  38 #include <cairo-ft.h>
  39 #include <time.h>
  40 #include <fontconfig/fontconfig.h>
  41 #include "version.h"
  42 #include "graph.h"
  43 #include "gameboard.h"
  44 #include "levelstate.h"
  45 #include "main.h"
  46
  47 #define boardstate "/.gPlanarity/boards/"
  48 #define mainstate "/.gPlanarity/"
  49
  50 char *boarddir;
  51 char *statedir;
  52 Gameboard *gameboard;
  53 GtkWidget *toplevel_window;
  54 graph maingraph;
  55
  56 char *version = "";
  57 static cairo_font_face_t *font_face=0;
  58 static cairo_font_face_t *bold_face=0;
  59 static cairo_font_face_t *ital_face=0;
  60
  61 static float adjust_x_normal;
  62 static float adjust_y_normal;
  63 static float adjust_x_bold;
  64 static float adjust_y_bold;
  65
  66 static int dir_create(char *name){
  67   if(mkdir(name,0700)){
  68     switch(errno){
  69     case EEXIST:
  70       // this is ok
  71       return 0;
  72     default:
  73       fprintf(stderr,"ERROR:  Could not create directory (%s) to save game state:\n\t%s\n",
  74               name,strerror(errno));
  75       return errno;
  76     }
  77   }
  78   return 0;
  79 }
  80
  81 void request_resize(int width, int height){
  82   gtk_window_resize(GTK_WINDOW(toplevel_window),width,height);
  83   if(gameboard->resize_timeout)
  84     gameboard->resize_timeout = time(NULL)+3;
  85   gameboard->resize_w = width;
  86   gameboard->resize_h = height;
  87 }
  88
  89 static void clean_exit(int sig){
  90   signal(sig,SIG_IGN);
  91   if(sig!=SIGINT)
  92     fprintf(stderr,
  93             "\nTrapped signal %d; saving state and exiting!\n",sig);
  94
  95   levelstate_write(statedir);
  96   gtk_main_quit();
  97   exit(0);
  98 }
  99
 100 static void clean_exit_delete_post(Gameboard *g){
 101   gameboard = 0;
 102   gtk_main_quit();
 103 }
 104
 105 static gint clean_exit_delete(gpointer p){
 106   levelstate_write(statedir);
 107   undeploy_buttons(gameboard,clean_exit_delete_post);
 108   return 1;  // we're handling it, don't continue the delete chain
 109 }
 110
 111 /* font handling... still a pain in the ass!  ...but mostly due to
 112    lack of documentation.
 113
 114    Try first to find one of the default fonts we prefer (FontConfig
 115    can search for a list, Cairo cannot).
 116
 117    Regardless of what's found, try to determine the approximate best
 118    aspect ratio of the text; gPlanarity looks best with a relatively
 119    tall/narrow font that renders with horizontal/vertical strokes of
 120    approximately identical width */
 121
 122 static cairo_font_face_t *init_font(char *list, int slant,int bold){
 123   cairo_font_face_t *ret;
 124   char *fontface;
 125   FcPattern *fc_pattern;
 126   FcBool scalable;
 127
 128   fc_pattern = FcNameParse((unsigned char *)list);
 129
 130   // load the system config
 131   FcConfigSubstitute(0, fc_pattern, FcMatchPattern);
 132
 133   FcPatternDel(fc_pattern,FC_SLANT);
 134   FcPatternDel(fc_pattern,FC_WEIGHT);
 135   if(slant)
 136     FcPatternAddInteger(fc_pattern,FC_SLANT,FC_SLANT_ITALIC);
 137   if(bold)
 138     FcPatternAddInteger(fc_pattern,FC_WEIGHT,FC_WEIGHT_BOLD);
 139
 140   // fill in missing defaults
 141   FcDefaultSubstitute(fc_pattern);
 142   // find a font face on our list if possible
 143   fc_pattern = FcFontMatch(0, fc_pattern, 0);
 144
 145   if(!fc_pattern){
 146     fprintf(stderr,"\nUnable to find any suitable %s fonts!\n"
 147             "Continuing, but the the results are likely to be poor.\n\n",
 148
 149             (slant?(bold?"bold italic":"italic"):(bold?"bold":"medium")) );
 150   }
 151
 152   FcPatternGetString (fc_pattern, FC_FAMILY, 0, (FcChar8 **)&fontface);
 153
 154   /*
 155   if(!strstr(list,fontface)){
 156     fprintf(stderr,"\nUnable to find any of gPlanarity's preferred %s fonts (%s);\n"
 157             "Using system default font \"%s\".\n\n",
 158             (slant?(bold?"bold italic":"italic"):(bold?"bold":"medium")),
 159             list,fontface);
 160             }*/
 161
 162   FcPatternGetBool(fc_pattern, FC_SCALABLE, 0, &scalable);
 163   if (scalable != FcTrue) {
 164     fprintf(stderr,"\nSelected %s font \"%s\" is not scalable!  This is almost as bad\n"
 165             "as not finding any font at all.  Continuing, but this may look\n"
 166             "very poor indeed.\n\n",
 167             (slant?(bold?"bold italic":"italic"):(bold?"bold":"medium")), fontface);
 168   }
 169
 170   /* Set the hinting behavior we want; only the autohinter is giving
 171      decent results across a wide range of sizes and face options.
 172      Don't obey the system config with respect to hinting; every one
 173      of my systems installed a default config that resulted in the
 174      available fonts looking like ass.  Bitstream Vera Sans especially
 175      looks bad without the autohinter, and that's the font most
 176      systems will have as the only sans default. */
 177
 178   // Must remove the preexisting settings!  The settings are a list,
 179   // and we're tacking ours on the end; Cairo only inspects first hit
 180   FcPatternDel(fc_pattern,FC_HINT_STYLE);
 181   FcPatternDel(fc_pattern,FC_HINTING);
 182   FcPatternDel(fc_pattern,FC_AUTOHINT);
 183
 184   // Add ours requesting autohint
 185   FcPatternAddBool(fc_pattern,FC_HINTING,FcTrue);
 186   FcPatternAddBool(fc_pattern,FC_AUTOHINT,FcTrue);
 187
 188   // Make the font face
 189   ret = cairo_ft_font_face_create_for_pattern(fc_pattern);
 190   FcPatternDestroy(fc_pattern);
 191   return ret;
 192 }
 193
 194 static void init_fonts(char *list){
 195
 196   font_face = init_font(list,0,0);
 197   bold_face = init_font(list,0,1);
 198   ital_face = init_font(list,1,0);
 199
 200   // We've done the best we can, font-choice-wise.  Determine an
 201   // aspect ratio correction for whatever font we've got.  Arial is
 202   // declared to be the ideal aspect, correct other fonts to the same
 203   // rough proportions (it looks better).  This is a rough hack, but
 204   // yields an unmistakable improvement.
 205
 206   {
 207     cairo_text_extents_t ex;
 208     char *test_string = "Practice Before the Handbasket: Three of Three";
 209     cairo_surface_t *s =
 210       cairo_image_surface_create (CAIRO_FORMAT_ARGB32,16,16);
 211     cairo_t *c = cairo_create(s);
 212     cairo_matrix_t m;
 213
 214     cairo_set_font_face (c, font_face);
 215     cairo_matrix_init_scale (&m, 50.,50.);
 216     cairo_set_font_matrix (c,&m);
 217     cairo_text_extents (c, test_string, &ex);
 218     adjust_x_normal = 1058 / ex.width;
 219     adjust_y_normal = -37 / ex.y_bearing;
 220
 221
 222     cairo_set_font_face (c, bold_face);
 223     cairo_text_extents (c, test_string, &ex);
 224     adjust_x_bold = 1130 / ex.width;
 225     adjust_y_bold = -37 / ex.y_bearing;
 226
 227
 228     cairo_destroy(c);
 229     cairo_surface_destroy(s);
 230   }
 231 }
 232
 233 void set_font (cairo_t *c, float w, float h, int slant, int bold){
 234   cairo_matrix_t m;
 235
 236   if(slant){
 237     cairo_set_font_face(c,ital_face);
 238     cairo_matrix_init_scale (&m, ceil(w*adjust_x_normal),ceil(h*adjust_y_normal));
 239   }else if (bold){
 240     cairo_set_font_face(c,bold_face);
 241     cairo_matrix_init_scale (&m, ceil(w*adjust_x_bold),ceil(h*adjust_y_bold));
 242   }else{
 243     cairo_set_font_face(c,font_face);
 244     cairo_matrix_init_scale (&m, ceil(w*adjust_x_normal),ceil(h*adjust_y_normal));
 245   }
 246   cairo_set_font_matrix (c,&m);
 247
 248 }
 249
 250 #include "icon.h"
 251 void set_icons(){
 252   GError *error=NULL;
 253   GList *pb=NULL;
 254   //GdkPixbufLoader *pbl1 = gdk_pixbuf_loader_new();
 255   GdkPixbufLoader *pbl2 = gdk_pixbuf_loader_new();
 256   GdkPixbufLoader *pbl3 = gdk_pixbuf_loader_new();
 257
 258   //gdk_pixbuf_loader_write(pbl1,icon134,sizeof(icon134),&error);
 259   gdk_pixbuf_loader_write(pbl2,icon64,sizeof(icon64),&error);
 260   gdk_pixbuf_loader_write(pbl3,icon32,sizeof(icon32),&error);
 261   //gdk_pixbuf_loader_close(pbl1,NULL);
 262   gdk_pixbuf_loader_close(pbl2,NULL);
 263   gdk_pixbuf_loader_close(pbl3,NULL);
 264
 265   //pb = g_list_append(pb, gdk_pixbuf_loader_get_pixbuf(pbl1));
 266   pb = g_list_append(pb, gdk_pixbuf_loader_get_pixbuf(pbl2));
 267   pb = g_list_append(pb, gdk_pixbuf_loader_get_pixbuf(pbl3));
 268   gtk_window_set_icon_list(GTK_WINDOW(toplevel_window),pb);
 269
 270 }
 271
 272 int main(int argc, char *argv[]){
 273   char *homedir = getenv("home");
 274   if(!homedir)
 275     homedir = getenv("HOME");
 276   if(!homedir)
 277     homedir = getenv("homedir");
 278   if(!homedir)
 279     homedir = getenv("HOMEDIR");
 280   if(!homedir){
 281     fprintf(stderr,"No homedir environment variable set!  gPlanarity will be\n"
 282             "unable to permanently save any progress or board state.\n");
 283     boarddir=NULL;
 284     statedir=NULL;
 285   }else{
 286     boarddir=calloc(strlen(homedir)+strlen(boardstate)+1,1);
 287     strcat(boarddir,homedir);
 288     strcat(boarddir,boardstate);
 289
 290     statedir=calloc(strlen(homedir)+strlen(mainstate)+1,1);
 291     strcat(statedir,homedir);
 292     strcat(statedir,mainstate);
 293
 294     dir_create(statedir);
 295     dir_create(boarddir);
 296   }
 297
 298   version=strstr(VERSION,"version.h");
 299   if(version){
 300     char *versionend=strchr(version,' ');
 301     if(versionend)versionend=strchr(versionend+1,' ');
 302     if(versionend)versionend=strchr(versionend+1,' ');
 303     if(versionend)versionend=strchr(versionend+1,' ');
 304     if(versionend){
 305       int len=versionend-version-9;
 306       version=strdup(version+10);
 307       version[len-1]=0;
 308     }
 309   }else{
 310     version="";
 311   }
 312
 313   init_fonts("");
 314
 315   gtk_init (&argc, &argv);
 316
 317   toplevel_window   = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 318   g_signal_connect (G_OBJECT (toplevel_window), "delete-event",
 319                     G_CALLBACK (clean_exit_delete), NULL);
 320
 321   gameboard = gameboard_new();
 322   levelstate_read();
 323
 324   gtk_container_add (GTK_CONTAINER (toplevel_window), GTK_WIDGET(gameboard));
 325   gtk_widget_realize(toplevel_window);
 326   gtk_widget_realize(GTK_WIDGET(gameboard));
 327
 328   memset(&maingraph,0,sizeof(maingraph));
 329
 330   /* get the setup processed before we fire up animations */
 331   while (gtk_events_pending ()){
 332     gtk_main_iteration ();
 333     gdk_window_process_updates(toplevel_window->window,1);
 334     gdk_flush();
 335   }
 336
 337   levelstate_resume();
 338   set_icons();
 339
 340   gtk_widget_show_all(toplevel_window);
 341   signal(SIGINT,clean_exit);
 342
 343   //signal(SIGSEGV,clean_exit); /* would be a bad idea; corrupt state
 344   //could prevent us from restarting */
 345
 346   gtk_main ();
 347
 348   if(gameboard !=0 )
 349     levelstate_write();
 350
 351   cairo_font_face_destroy(font_face);
 352   cairo_font_face_destroy(bold_face);
 353   cairo_font_face_destroy(ital_face);
 354
 355   return 0;
 356 }