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