surf.c

   1 /* See LICENSE file for copyright and license details.
   2  *
   3  * To understand surf, start reading main().
   4  */
   5 #include <X11/X.h>
   6 #include <X11/Xatom.h>
   7 #include <gtk/gtk.h>
   8 #include <gdk/gdkx.h>
   9 #include <gdk/gdk.h>
  10 #include <gdk/gdkkeysyms.h>
  11 #include <string.h>
  12 #include <unistd.h>
  13 #include <getopt.h>
  14 #include <stdlib.h>
  15 #include <stdio.h>
  16 #include <webkit/webkit.h>
  17
  18 #define LENGTH(x) (sizeof x / sizeof x[0])
  19
  20 Display *dpy;
  21 Atom urlprop;
  22 typedef struct Client {
  23         GtkWidget *win, *scroll, *vbox, *urlbar, *urllist, *searchbar;
  24         WebKitWebView *view;
  25         gchar *title;
  26         gint progress;
  27         struct Client *next;
  28 } Client;
  29 Client *clients = NULL;
  30 gboolean embed = FALSE;
  31 gboolean showxid = FALSE;
  32 gboolean ignore_once = FALSE;
  33 extern char *optarg;
  34 extern int optind;
  35
  36 static void cleanup(void);
  37 static gboolean decidewindow(WebKitWebView *view, WebKitWebFrame *f,
  38                 WebKitNetworkRequest *r, WebKitWebNavigationAction *n,
  39                 WebKitWebPolicyDecision *p, gpointer d);
  40 static void destroyclient(Client *c);
  41 static void destroywin(GtkWidget* w, gpointer d);
  42 static void die(char *str);
  43 static gboolean download(WebKitWebView *view, GObject *o, gpointer d);
  44 static gchar *geturi(Client *c);
  45 static void hidesearch(Client *c);
  46 static void hideurl(Client *c);
  47 static gboolean keypress(GtkWidget* w, GdkEventKey *ev, gpointer d);
  48 static void linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d);
  49 static void loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d);
  50 static void loadfile(const Client *c, const gchar *f);
  51 static void loaduri(const Client *c, const gchar *uri);
  52 static Client *newclient();
  53 static WebKitWebView *newwindow(WebKitWebView  *v, WebKitWebFrame *f, gpointer d);
  54 static void progresschange(WebKitWebView *view, gint p, gpointer d);
  55 static GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event, gpointer data);
  56 static void setup(void);
  57 static void showsearch(Client *c);
  58 static void showurl(Client *c);
  59 static void titlechange(WebKitWebView* view, WebKitWebFrame* frame, const gchar* title, gpointer d);
  60 static void updatetitle(Client *c);
  61
  62
  63 gchar *
  64 geturi(Client *c) {
  65         gchar *uri;
  66
  67         if(!(uri = (gchar *)webkit_web_view_get_uri(c->view)))
  68                 uri = g_strdup("about:blank");
  69         return uri;
  70 }
  71
  72 void
  73 showurl(Client *c) {
  74         gchar *uri;
  75
  76         hidesearch(c);
  77         uri = geturi(c);
  78         gtk_entry_set_text(GTK_ENTRY(c->urlbar), uri);
  79         gtk_widget_show(c->urlbar);
  80         gtk_widget_grab_focus(c->urlbar);
  81 }
  82
  83 void
  84 hideurl(Client *c) {
  85         gtk_widget_hide(c->urlbar);
  86         gtk_widget_grab_focus(GTK_WIDGET(c->view));
  87 }
  88
  89 void
  90 showsearch(Client *c) {
  91         hideurl(c);
  92         gtk_widget_show(c->searchbar);
  93         gtk_widget_grab_focus(c->searchbar);
  94 }
  95
  96 void
  97 hidesearch(Client *c) {
  98         gtk_widget_hide(c->searchbar);
  99         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 100 }
 101
 102 void
 103 cleanup(void) {
 104         while(clients)
 105                 destroyclient(clients);
 106 }
 107
 108 GdkFilterReturn
 109 processx(GdkXEvent *e, GdkEvent *event, gpointer d) {
 110         XPropertyEvent *ev;
 111         Client *c = (Client *)d;
 112         Atom adummy;
 113         int idummy;
 114         unsigned long ldummy;
 115         unsigned char *buf = NULL;
 116         if(((XEvent *)e)->type == PropertyNotify) {
 117                 ev = &((XEvent *)e)->xproperty;
 118                 if(ignore_once == FALSE && ev->atom == urlprop && ev->state == PropertyNewValue) {
 119                         XGetWindowProperty(dpy, ev->window, urlprop, 0L, BUFSIZ, False, XA_STRING,
 120                                 &adummy, &idummy, &ldummy, &ldummy, &buf);
 121                         loaduri(c, (gchar *)buf);
 122                         XFree(buf);
 123                         return GDK_FILTER_REMOVE;
 124                 }
 125         }
 126         return GDK_FILTER_CONTINUE;
 127 }
 128
 129 void
 130 loadfile(const Client *c, const gchar *f) {
 131         GIOChannel *chan = NULL;
 132         GError *e = NULL;
 133         GString *code = g_string_new("");
 134         GString *uri = g_string_new(f);
 135         gchar *line;
 136
 137         if(strcmp(f, "-") == 0) {
 138                 chan = g_io_channel_unix_new(STDIN_FILENO);
 139                 if (chan) {
 140                         while(g_io_channel_read_line(chan, &line, NULL, NULL, &e) == G_IO_STATUS_NORMAL) {
 141                                 g_string_append(code, line);
 142                                 g_free(line);
 143                         }
 144                         webkit_web_view_load_html_string(c->view, code->str, NULL);
 145                         g_io_channel_shutdown(chan, FALSE, NULL);
 146                 }
 147         }
 148         else {
 149                 g_string_prepend(uri, "file://");
 150                 loaduri(c, uri->str);
 151         }
 152
 153 }
 154
 155 void
 156 loaduri(const Client *c, const gchar *uri) {
 157         GString* u = g_string_new(uri);
 158         if(g_strrstr(u->str, ":") == NULL)
 159                 g_string_prepend(u, "http://");
 160         webkit_web_view_load_uri(c->view, u->str);
 161         g_string_free(u, TRUE);
 162 }
 163
 164 gboolean
 165 download(WebKitWebView *view, GObject *o, gpointer d) {
 166         /* TODO */
 167         return FALSE;
 168 }
 169
 170 gboolean
 171 decidewindow(WebKitWebView *view, WebKitWebFrame *f,
 172                 WebKitNetworkRequest *r, WebKitWebNavigationAction *n,
 173                 WebKitWebPolicyDecision *p, gpointer d) {
 174         /* TODO */
 175         return TRUE;
 176 }
 177
 178 WebKitWebView *
 179 newwindow(WebKitWebView  *v, WebKitWebFrame *f, gpointer d) {
 180         /* TODO */
 181         Client *c = newclient();
 182         return c->view;
 183 }
 184
 185 void
 186 linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d) {
 187         Client *c = (Client *)d;
 188
 189         if(l)
 190                 gtk_window_set_title(GTK_WINDOW(c->win), l);
 191         else
 192                 updatetitle(c);
 193 }
 194
 195 void
 196 loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d) {
 197         Client *c = (Client *)d;
 198         gchar *uri;
 199
 200         uri = geturi(c);
 201         ignore_once = TRUE;
 202         XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window), urlprop,
 203                         XA_STRING, 8, PropModeReplace, (unsigned char *)uri,
 204                         strlen(uri) + 1);
 205 }
 206
 207 void
 208 progresschange(WebKitWebView* view, gint p, gpointer d) {
 209         Client *c = (Client *)d;
 210
 211         c->progress = p;
 212         updatetitle(c);
 213 }
 214
 215 void
 216 updatetitle(Client *c) {
 217         char t[512];
 218         if(c->progress == 100)
 219                 snprintf(t, LENGTH(t), "%s", c->title);
 220         else
 221                 snprintf(t, LENGTH(t), "%s [%i%%]", c->title, c->progress);
 222         gtk_window_set_title(GTK_WINDOW(c->win), t);
 223 }
 224
 225 void
 226 titlechange(WebKitWebView *v, WebKitWebFrame *f, const gchar *t, gpointer d) {
 227         Client *c = (Client *)d;
 228
 229         if(c->title)
 230                 g_free(c->title);
 231         c->title = g_strdup(t);
 232         updatetitle(c);
 233 }
 234
 235 void
 236 destroywin(GtkWidget* w, gpointer d) {
 237         Client *c = (Client *)d;
 238
 239         destroyclient(c);
 240 }
 241
 242 void
 243 destroyclient(Client *c) {
 244         Client *p;
 245
 246         gtk_widget_destroy(GTK_WIDGET(webkit_web_view_new()));
 247         gtk_widget_destroy(c->scroll);
 248         gtk_widget_destroy(c->urlbar);
 249         gtk_widget_destroy(c->urllist);
 250         gtk_widget_destroy(c->searchbar);
 251         gtk_widget_destroy(c->vbox);
 252         gtk_widget_destroy(c->win);
 253         for(p = clients; p && p->next != c; p = p->next);
 254         if(p)
 255                 p->next = c->next;
 256         else
 257                 clients = c->next;
 258         free(c);
 259         if(clients == NULL)
 260                 gtk_main_quit();
 261 }
 262
 263 gboolean
 264 keypress(GtkWidget* w, GdkEventKey *ev, gpointer d) {
 265         Client *c = (Client *)d;
 266
 267         if(ev->type != GDK_KEY_PRESS)
 268                 return FALSE;
 269         if(GTK_WIDGET_HAS_FOCUS(c->searchbar)) {
 270                 switch(ev->keyval) {
 271                 case GDK_Escape:
 272                         hidesearch(c);
 273                         return TRUE;
 274                 case GDK_Return:
 275                         webkit_web_view_search_text(c->view,
 276                                         gtk_entry_get_text(GTK_ENTRY(c->searchbar)),
 277                                         FALSE,
 278                                         !(ev->state & GDK_SHIFT_MASK),
 279                                         TRUE);
 280                         return TRUE;
 281                 case GDK_Left:
 282                 case GDK_Right:
 283                 case GDK_r:
 284                         return FALSE;
 285                 }
 286         }
 287         else if(GTK_WIDGET_HAS_FOCUS(c->urlbar)) {
 288                 switch(ev->keyval) {
 289                 case GDK_Escape:
 290                         hideurl(c);
 291                         return TRUE;
 292                 case GDK_Return:
 293                         loaduri(c, gtk_entry_get_text(GTK_ENTRY(c->urlbar)));
 294                         hideurl(c);
 295                         return TRUE;
 296                 case GDK_Left:
 297                 case GDK_Right:
 298                 case GDK_r:
 299                         return FALSE;
 300                 }
 301         }
 302         if(ev->state == GDK_CONTROL_MASK || ev->state == (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) {
 303                 switch(ev->keyval) {
 304                 case GDK_r:
 305                 case GDK_R:
 306                         if((ev->state & GDK_SHIFT_MASK))
 307                                  webkit_web_view_reload_bypass_cache(c->view);
 308                         else
 309                                  webkit_web_view_reload(c->view);
 310                         return TRUE;
 311                 case GDK_b:
 312                         return TRUE;
 313                 case GDK_g:
 314                         showurl(c);
 315                         return TRUE;
 316                 case GDK_slash:
 317                         showsearch(c);
 318                         return TRUE;
 319                 case GDK_Left:
 320                         webkit_web_view_go_back(c->view);
 321                         return TRUE;
 322                 case GDK_Right:
 323                         webkit_web_view_go_forward(c->view);
 324                         return TRUE;
 325                 }
 326         }
 327         return FALSE;
 328 }
 329
 330 void setup(void) {
 331         dpy = GDK_DISPLAY();
 332         urlprop = XInternAtom(dpy, "_SURF_URL", False);
 333 }
 334
 335 void die(char *str) {
 336         fputs(str, stderr);
 337         exit(EXIT_FAILURE);
 338 }
 339
 340 Client *
 341 newclient(void) {
 342         Client *c;
 343         if(!(c = calloc(1, sizeof(Client))))
 344                 die("Cannot malloc!\n");
 345         /* Window */
 346         if(embed) {
 347                 c->win = gtk_plug_new(0);
 348         }
 349         else {
 350                 c->win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 351                 gtk_window_set_wmclass(GTK_WINDOW(c->win), "surf", "surf");
 352         }
 353         gtk_window_set_default_size(GTK_WINDOW(c->win), 800, 600);
 354         g_signal_connect(G_OBJECT(c->win), "destroy", G_CALLBACK(destroywin), c);
 355         g_signal_connect(G_OBJECT(c->win), "key-press-event", G_CALLBACK(keypress), c);
 356
 357         /* VBox */
 358         c->vbox = gtk_vbox_new(FALSE, 0);
 359
 360         /* scrolled window */
 361         c->scroll = gtk_scrolled_window_new(NULL, NULL);
 362         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(c->scroll),
 363                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 364
 365         /* webview */
 366         c->view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 367         g_signal_connect(G_OBJECT(c->view), "title-changed", G_CALLBACK(titlechange), c);
 368         g_signal_connect(G_OBJECT(c->view), "load-progress-changed", G_CALLBACK(progresschange), c);
 369         g_signal_connect(G_OBJECT(c->view), "load-committed", G_CALLBACK(loadcommit), c);
 370         g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
 371         g_signal_connect(G_OBJECT(c->view), "create-web-view", G_CALLBACK(newwindow), c);
 372         g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(decidewindow), c);
 373         g_signal_connect(G_OBJECT(c->view), "download-requested", G_CALLBACK(download), c);
 374
 375         /* urlbar */
 376         c->urlbar = gtk_entry_new();
 377         gtk_entry_set_has_frame(GTK_ENTRY(c->urlbar), FALSE);
 378
 379         /* searchbar */
 380         c->searchbar = gtk_entry_new();
 381         gtk_entry_set_has_frame(GTK_ENTRY(c->searchbar), FALSE);
 382
 383         /* Arranging */
 384         gtk_container_add(GTK_CONTAINER(c->scroll), GTK_WIDGET(c->view));
 385         gtk_container_add(GTK_CONTAINER(c->win), c->vbox);
 386         gtk_container_add(GTK_CONTAINER(c->vbox), c->scroll);
 387         gtk_container_add(GTK_CONTAINER(c->vbox), c->searchbar);
 388         gtk_container_add(GTK_CONTAINER(c->vbox), c->urlbar);
 389
 390         /* Setup */
 391         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->urlbar, FALSE, FALSE, 0, GTK_PACK_START);
 392         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->searchbar, FALSE, FALSE, 0, GTK_PACK_START);
 393         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->scroll, TRUE, TRUE, 0, GTK_PACK_START);
 394         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 395         gtk_widget_hide_all(c->searchbar);
 396         gtk_widget_hide_all(c->urlbar);
 397         gtk_widget_show(c->vbox);
 398         gtk_widget_show(c->scroll);
 399         gtk_widget_show(GTK_WIDGET(c->view));
 400         gtk_widget_show(c->win);
 401         gdk_window_set_events(GTK_WIDGET(c->win)->window, GDK_ALL_EVENTS_MASK);
 402         gdk_window_add_filter(GTK_WIDGET(c->win)->window, processx, c);
 403         c->next = clients;
 404         clients = c;
 405         if(showxid)
 406                 printf("%u\n", (unsigned int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 407         return c;
 408 }
 409
 410 int main(int argc, char *argv[]) {
 411         gchar *uri = NULL, *file = NULL;
 412         Client *c;
 413         int o;
 414
 415         gtk_init(NULL, NULL);
 416         if (!g_thread_supported())
 417                 g_thread_init(NULL);
 418         setup();
 419         while((o = getopt(argc, argv, "vhxeu:f:")) != -1)
 420                 switch(o) {
 421                 case 'x':
 422                         showxid = TRUE;
 423                         break;
 424                 case 'e':
 425                         showxid = TRUE;
 426                         embed = TRUE;
 427                         break;
 428                 case 'u':
 429                         if(!(uri = optarg))
 430                                 goto argerr;
 431                         c = newclient();
 432                         loaduri(c, uri);
 433                         updatetitle(c);
 434                         break;
 435                 case 'f':
 436                         if(!(file = optarg))
 437                                 goto argerr;
 438                         c = newclient();
 439                         loadfile(c, file);
 440                         updatetitle(c);
 441                         break;
 442                 case 'v':
 443                         die("surf-"VERSION", © 2009 surf engineers, see LICENSE for details\n");
 444                         break;
 445                 argerr:
 446                 default:
 447                         puts("surf - simple browser");
 448                         die("usage: surf [-e] [-x] [-u uri] [-f file]\n");
 449                         return EXIT_FAILURE;
 450                 }
 451         if(optind != argc)
 452                 goto argerr;
 453         if(!clients)
 454                 newclient();
 455         gtk_main();
 456         cleanup();
 457         return EXIT_SUCCESS;
 458 }