src/tpdfview.c

   1 /*
   2  * tpdfview - src/tpdfview.c
   3  * Copyright (C) 2011 Sebastian 'tokkee' Harl <sh@tokkee.org>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  16  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  17  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  18  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
  19  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * A tiny PDF viewer.
  30  */
  31
  32 #if HAVE_CONFIG_H
  33 #       include "config.h"
  34 #endif /* HAVE_CONFIG_H */
  35
  36 #include "tpdfv.h"
  37 #include "tpdfv_features.h"
  38
  39 #include "gtk-tpdfv.h"
  40 #include "tpdfv-ctl.h"
  41
  42 #if HAVE_LIBGEN_H
  43 #       include <libgen.h>
  44 #else /* HAVE_LIBGEN_H */
  45 #       define basename(path) (path)
  46 #endif /* ! HAVE_LIBGEN_H */
  47
  48 #include <assert.h>
  49
  50 #include <stdio.h>
  51 #include <stdlib.h>
  52
  53 #include <string.h>
  54
  55 #include <unistd.h>
  56
  57 #include <gtk/gtk.h>
  58 #include <gdk/gdkkeysyms.h>
  59
  60 /*
  61  * Global variables.
  62  */
  63 static gtk_tpdfv_screens_t *screens = NULL;
  64
  65 static void
  66 exit_usage(char *name, int status)
  67 {
  68         printf(
  69 "Usage: %s [<options>] <filename>\n"
  70
  71 "\nA tiny PDF viewer.\n"
  72
  73 "\nOptions:\n"
  74 "  -h    display this help and exit\n"
  75 "  -V    display the version number and copyright\n"
  76
  77 "\ntpdfview "TPDFV_VERSION_STRING TPDFV_VERSION_EXTRA", "PACKAGE_URL"\n"
  78 "Copyright (C) 2011 "PACKAGE_MAINTAINER"\n",
  79 basename(name));
  80         exit(status);
  81 } /* exit_usage */
  82
  83 static void
  84 exit_version(void)
  85 {
  86         printf("tpdfview version "TPDFV_VERSION_STRING TPDFV_VERSION_EXTRA", "
  87                         "built "BUILD_DATE"\n"
  88                         "Copyright (C) 2011 "PACKAGE_MAINTAINER"\n"
  89
  90                         "\nThis is free software under the terms of the BSD license, see "
  91                         "the source for\ncopying conditions. There is NO WARRANTY; not "
  92                         "even for MERCHANTABILITY or\nFITNESS FOR A PARTICULAR "
  93                         "PURPOSE.\n");
  94         exit(0);
  95 } /* exit_version */
  96
  97 static void
  98 toggle_fullscreen(GtkWindow *win)
  99 {
 100         GdkWindowState state;
 101
 102         if (! gtk_widget_get_realized(GTK_WIDGET(win)))
 103                 return;
 104
 105         state = gdk_window_get_state(GTK_WIDGET(win)->window);
 106
 107         if (state & GDK_WINDOW_STATE_FULLSCREEN)
 108                 gtk_window_unfullscreen(win);
 109         else
 110                 gtk_window_fullscreen(win);
 111 } /* toggle_fullscreen */
 112
 113 static void
 114 on_destroy(GtkWidget __attribute__((unused)) *widget,
 115                 gpointer __attribute__((unused)) data)
 116 {
 117         gtk_main_quit();
 118 } /* on_destroy */
 119
 120 static gboolean
 121 key_press(GtkWidget *window, GdkEventKey *event, gpointer data)
 122 {
 123         GObject *obj;
 124
 125         obj = G_OBJECT(data);
 126         assert(obj);
 127
 128         switch (event->keyval) {
 129                 case GDK_q:
 130                         gtk_main_quit();
 131                         break;
 132
 133                 case GDK_r:
 134                         tpdfv_ctl_reload(obj);
 135                         break;
 136
 137                 case GDK_F:
 138                         toggle_fullscreen(GTK_WINDOW(window));
 139                         break;
 140
 141                 /* navigation */
 142                 case GDK_Page_Up:
 143                         tpdfv_ctl_page_up(obj);
 144                         break;
 145                 case GDK_Page_Down:
 146                         /* fall through */
 147                 case GDK_space:
 148                         tpdfv_ctl_page_down(obj);
 149                         break;
 150                 case GDK_Home:
 151                         tpdfv_ctl_first_page(obj);
 152                         break;
 153                 case GDK_End:
 154                         tpdfv_ctl_last_page(obj);
 155                         break;
 156
 157                 /* zoom */
 158                 case GDK_plus:
 159                         tpdfv_ctl_zoom_in(obj);
 160                         break;
 161                 case GDK_minus:
 162                         tpdfv_ctl_zoom_out(obj);
 163                         break;
 164                 case GDK_1:
 165                         tpdfv_ctl_zoom_1(obj);
 166                         break;
 167                 case GDK_w:
 168                         tpdfv_ctl_zoom_width(obj);
 169                         break;
 170                 case GDK_h:
 171                         tpdfv_ctl_zoom_height(obj);
 172                         break;
 173                 case GDK_z:
 174                         tpdfv_ctl_zoom_fit(obj);
 175                         break;
 176
 177                 /* scrolling */
 178                 case GDK_Up:
 179                         tpdfv_ctl_scroll_up(obj);
 180                         break;
 181                 case GDK_Down:
 182                         tpdfv_ctl_scroll_down(obj);
 183                         break;
 184                 case GDK_Left:
 185                         tpdfv_ctl_scroll_left(obj);
 186                         break;
 187                 case GDK_Right:
 188                         tpdfv_ctl_scroll_right(obj);
 189                         break;
 190
 191                 /* screen management */
 192                 case GDK_M:
 193                         {
 194                                 gint n_screens = gtk_tpdfv_screens_number(screens);
 195                                 gint screen = gtk_tpdfv_screens_window_get(screens,
 196                                                 GTK_WINDOW(window));
 197
 198                                 gtk_tpdfv_screens_window_set(screens,
 199                                                 GTK_WINDOW(window), (screen + 1) % n_screens);
 200                         }
 201                         break;
 202         }
 203         return FALSE;
 204 } /* key_press */
 205
 206 int
 207 main(int argc, char **argv)
 208 {
 209         GtkWidget *win;
 210         GtkWidget *tpdfv;
 211
 212         GObject *ctl;
 213
 214         char win_title[1024];
 215
 216         _Bool presentation_mode = 0;
 217
 218         GdkColor bg_color;
 219
 220         char *filename;
 221
 222         gtk_init(&argc, &argv);
 223
 224         while (42) {
 225                 int opt = getopt(argc, argv, "PhV");
 226
 227                 if (-1 == opt)
 228                         break;
 229
 230                 switch (opt) {
 231                         case 'P':
 232                                 presentation_mode = 1;
 233                                 break;
 234
 235                         case 'h':
 236                                 exit_usage(argv[0], 0);
 237                                 break;
 238                         case 'V':
 239                                 exit_version();
 240                                 break;
 241                         default:
 242                                 exit_usage(argv[0], 1);
 243                 }
 244         }
 245
 246         if (argc - optind != 1) {
 247                 fprintf(stderr, "%s: missing filename\n", argv[0]);
 248                 exit_usage(argv[0], 1);
 249         }
 250
 251         filename = argv[optind];
 252
 253         tpdfv = gtk_tpdfv_new(filename);
 254         if (! tpdfv)
 255                 return 1;
 256
 257         win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 258         if (! win)
 259                 return 1;
 260
 261         screens = gtk_tpdfv_screens_init(/* display = */ NULL);
 262         if (! screens)
 263                 return 1;
 264
 265         snprintf(win_title, sizeof(win_title), "tpdfview: %s",
 266                         basename(filename));
 267         gtk_window_set_title(GTK_WINDOW(win), win_title);
 268
 269         gtk_container_add(GTK_CONTAINER(win), tpdfv);
 270
 271         ctl = tpdfv_ctl_new(GTK_TPDFV(tpdfv));
 272         if (! ctl)
 273                 return 1;
 274
 275         /* TODO: use resource file */
 276         gdk_color_parse("#000000", &bg_color);
 277
 278         if (presentation_mode) {
 279                 GtkWidget *pres_win;
 280                 GtkWidget *paned;
 281                 GtkWidget *tpdfv1, *tpdfv2;
 282
 283                 tpdfv1 = gtk_tpdfv_new(filename);
 284                 if (! tpdfv1)
 285                         return 1;
 286
 287                 if (! tpdfv_ctl_add_slave(ctl, GTK_TPDFV(tpdfv1),
 288                                         /* factor = */ 1, /* offset = */ 0))
 289                         return 1;
 290
 291                 tpdfv2 = gtk_tpdfv_new(filename);
 292                 if (! tpdfv2)
 293                         return 1;
 294
 295                 if (! tpdfv_ctl_add_slave(ctl, GTK_TPDFV(tpdfv2),
 296                                         /* factor = */ 1, /* offset = */ 1))
 297                         return 1;
 298
 299                 paned = gtk_hpaned_new();
 300                 if (! paned)
 301                         return 1;
 302
 303                 gtk_paned_pack1(GTK_PANED(paned), tpdfv1, TRUE, TRUE);
 304                 gtk_paned_pack2(GTK_PANED(paned), tpdfv2, TRUE, TRUE);
 305
 306                 gtk_tpdfv_zoom_fit(tpdfv1);
 307                 gtk_tpdfv_zoom_fit(tpdfv2);
 308
 309                 pres_win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 310                 if (! pres_win)
 311                         return 1;
 312
 313                 gtk_window_set_title(GTK_WINDOW(pres_win), win_title);
 314
 315                 gtk_container_add(GTK_CONTAINER(pres_win), paned);
 316
 317                 gtk_widget_modify_bg(tpdfv1, GTK_STATE_NORMAL, &bg_color);
 318                 gtk_widget_modify_bg(tpdfv2, GTK_STATE_NORMAL, &bg_color);
 319
 320                 g_signal_connect(G_OBJECT(pres_win), "destroy",
 321                                 G_CALLBACK(on_destroy), NULL);
 322                 g_signal_connect(G_OBJECT(pres_win), "key-press-event",
 323                                 G_CALLBACK(key_press), ctl);
 324
 325                 gtk_widget_modify_bg(pres_win, GTK_STATE_NORMAL, &bg_color);
 326                 gtk_widget_modify_bg(tpdfv1, GTK_STATE_NORMAL, &bg_color);
 327                 gtk_widget_modify_bg(tpdfv2, GTK_STATE_NORMAL, &bg_color);
 328
 329                 gtk_widget_show_all(pres_win);
 330         }
 331
 332         g_signal_connect(G_OBJECT(win), "destroy",
 333                         G_CALLBACK(on_destroy), NULL);
 334         g_signal_connect(G_OBJECT(win), "key-press-event",
 335                         G_CALLBACK(key_press), ctl);
 336
 337         gtk_widget_modify_bg(tpdfv, GTK_STATE_NORMAL, &bg_color);
 338
 339         gtk_widget_show_all(win);
 340
 341         gtk_main();
 342
 343         gtk_tpdfv_screens_destroy(screens);
 344         return 0;
 345 } /* main */
 346
 347 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */
 348