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, *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, WebKitDownload *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->searchbar);
  84         gtk_widget_destroy(c->vbox);
  85         gtk_widget_destroy(c->win);
  86         for(p = clients; p && p->next != c; p = p->next);
  87         if(p)
  88                 p->next = c->next;
  89         else
  90                 clients = c->next;
  91         free(c);
  92         if(clients == NULL)
  93                 gtk_main_quit();
  94 }
  95
  96 void
  97 destroywin(GtkWidget* w, gpointer d) {
  98         Client *c = (Client *)d;
  99
 100         destroyclient(c);
 101 }
 102
 103 void die(char *str) {
 104         fputs(str, stderr);
 105         exit(EXIT_FAILURE);
 106 }
 107
 108 gboolean
 109 download(WebKitWebView *view, WebKitDownload *o, gpointer d) {
 110         /* TODO */
 111         const gchar *home;
 112         gchar *uri, *filename;
 113
 114         home = g_get_home_dir();
 115         filename = g_build_filename(home, "Desktop",
 116                         webkit_download_get_suggested_filename(o), NULL);
 117         uri = g_strconcat("file://", filename, NULL);
 118         webkit_download_set_destination_uri(o, uri);
 119         g_free(filename);
 120         g_free(uri);
 121         webkit_download_start(o);
 122         return TRUE;
 123 }
 124
 125 gchar *
 126 geturi(Client *c) {
 127         gchar *uri;
 128
 129         if(!(uri = (gchar *)webkit_web_view_get_uri(c->view)))
 130                 uri = g_strdup("about:blank");
 131         return uri;
 132 }
 133
 134 void
 135 hidesearch(Client *c) {
 136         gtk_widget_hide(c->searchbar);
 137         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 138 }
 139
 140 void
 141 hideurl(Client *c) {
 142         gtk_widget_hide(c->urlbar);
 143         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 144 }
 145
 146 gboolean
 147 keypress(GtkWidget* w, GdkEventKey *ev, gpointer d) {
 148         Client *c = (Client *)d;
 149
 150         if(ev->type != GDK_KEY_PRESS)
 151                 return FALSE;
 152         if(GTK_WIDGET_HAS_FOCUS(c->searchbar)) {
 153                 switch(ev->keyval) {
 154                 case GDK_Escape:
 155                         hidesearch(c);
 156                         return TRUE;
 157                 case GDK_Return:
 158                         webkit_web_view_search_text(c->view,
 159                                         gtk_entry_get_text(GTK_ENTRY(c->searchbar)),
 160                                         FALSE,
 161                                         !(ev->state & GDK_SHIFT_MASK),
 162                                         TRUE);
 163                         return TRUE;
 164                 case GDK_Left:
 165                 case GDK_Right:
 166                 case GDK_r:
 167                         return FALSE;
 168                 }
 169         }
 170         else if(GTK_WIDGET_HAS_FOCUS(c->urlbar)) {
 171                 switch(ev->keyval) {
 172                 case GDK_Escape:
 173                         hideurl(c);
 174                         return TRUE;
 175                 case GDK_Return:
 176                         loaduri(c, gtk_entry_get_text(GTK_ENTRY(c->urlbar)));
 177                         hideurl(c);
 178                         return TRUE;
 179                 case GDK_Left:
 180                 case GDK_Right:
 181                 case GDK_r:
 182                         return FALSE;
 183                 }
 184         }
 185         if(ev->state == GDK_CONTROL_MASK || ev->state == (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) {
 186                 switch(ev->keyval) {
 187                 case GDK_r:
 188                 case GDK_R:
 189                         if((ev->state & GDK_SHIFT_MASK))
 190                                  webkit_web_view_reload_bypass_cache(c->view);
 191                         else
 192                                  webkit_web_view_reload(c->view);
 193                         return TRUE;
 194                 case GDK_b:
 195                         return TRUE;
 196                 case GDK_g:
 197                         showurl(c);
 198                         return TRUE;
 199                 case GDK_slash:
 200                         showsearch(c);
 201                         return TRUE;
 202                 case GDK_Left:
 203                         webkit_web_view_go_back(c->view);
 204                         return TRUE;
 205                 case GDK_Right:
 206                         webkit_web_view_go_forward(c->view);
 207                         return TRUE;
 208                 }
 209         }
 210         return FALSE;
 211 }
 212
 213 void
 214 linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d) {
 215         Client *c = (Client *)d;
 216
 217         if(l)
 218                 gtk_window_set_title(GTK_WINDOW(c->win), l);
 219         else
 220                 updatetitle(c);
 221 }
 222
 223 void
 224 loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d) {
 225         Client *c = (Client *)d;
 226         gchar *uri;
 227
 228         uri = geturi(c);
 229         ignore_once = TRUE;
 230         XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window), urlprop,
 231                         XA_STRING, 8, PropModeReplace, (unsigned char *)uri,
 232                         strlen(uri) + 1);
 233 }
 234
 235 void
 236 loadfile(const Client *c, const gchar *f) {
 237         GIOChannel *chan = NULL;
 238         GError *e = NULL;
 239         GString *code = g_string_new("");
 240         GString *uri = g_string_new(f);
 241         gchar *line;
 242
 243         if(strcmp(f, "-") == 0) {
 244                 chan = g_io_channel_unix_new(STDIN_FILENO);
 245                 if (chan) {
 246                         while(g_io_channel_read_line(chan, &line, NULL, NULL, &e) == G_IO_STATUS_NORMAL) {
 247                                 g_string_append(code, line);
 248                                 g_free(line);
 249                         }
 250                         webkit_web_view_load_html_string(c->view, code->str, NULL);
 251                         g_io_channel_shutdown(chan, FALSE, NULL);
 252                 }
 253         }
 254         else {
 255                 g_string_prepend(uri, "file://");
 256                 loaduri(c, uri->str);
 257         }
 258
 259 }
 260
 261 void
 262 loaduri(const Client *c, const gchar *uri) {
 263         GString* u = g_string_new(uri);
 264         if(g_strrstr(u->str, ":") == NULL)
 265                 g_string_prepend(u, "http://");
 266         webkit_web_view_load_uri(c->view, u->str);
 267         g_string_free(u, TRUE);
 268 }
 269
 270 Client *
 271 newclient(void) {
 272         Client *c;
 273         if(!(c = calloc(1, sizeof(Client))))
 274                 die("Cannot malloc!\n");
 275         /* Window */
 276         if(embed) {
 277                 c->win = gtk_plug_new(0);
 278         }
 279         else {
 280                 c->win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 281                 gtk_window_set_wmclass(GTK_WINDOW(c->win), "surf", "surf");
 282         }
 283         gtk_window_set_default_size(GTK_WINDOW(c->win), 800, 600);
 284         g_signal_connect(G_OBJECT(c->win), "destroy", G_CALLBACK(destroywin), c);
 285         g_signal_connect(G_OBJECT(c->win), "key-press-event", G_CALLBACK(keypress), c);
 286
 287         /* VBox */
 288         c->vbox = gtk_vbox_new(FALSE, 0);
 289
 290         /* scrolled window */
 291         c->scroll = gtk_scrolled_window_new(NULL, NULL);
 292         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(c->scroll),
 293                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 294
 295         /* webview */
 296         c->view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 297         g_signal_connect(G_OBJECT(c->view), "title-changed", G_CALLBACK(titlechange), c);
 298         g_signal_connect(G_OBJECT(c->view), "load-progress-changed", G_CALLBACK(progresschange), c);
 299         g_signal_connect(G_OBJECT(c->view), "load-committed", G_CALLBACK(loadcommit), c);
 300         g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
 301         g_signal_connect(G_OBJECT(c->view), "create-web-view", G_CALLBACK(newwindow), c);
 302         g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(decidewindow), c);
 303         g_signal_connect(G_OBJECT(c->view), "download-requested", G_CALLBACK(download), c);
 304
 305         /* urlbar */
 306         c->urlbar = gtk_entry_new();
 307         gtk_entry_set_has_frame(GTK_ENTRY(c->urlbar), FALSE);
 308
 309         /* searchbar */
 310         c->searchbar = gtk_entry_new();
 311         gtk_entry_set_has_frame(GTK_ENTRY(c->searchbar), FALSE);
 312
 313         /* Arranging */
 314         gtk_container_add(GTK_CONTAINER(c->scroll), GTK_WIDGET(c->view));
 315         gtk_container_add(GTK_CONTAINER(c->win), c->vbox);
 316         gtk_container_add(GTK_CONTAINER(c->vbox), c->scroll);
 317         gtk_container_add(GTK_CONTAINER(c->vbox), c->searchbar);
 318         gtk_container_add(GTK_CONTAINER(c->vbox), c->urlbar);
 319
 320         /* Setup */
 321         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->urlbar, FALSE, FALSE, 0, GTK_PACK_START);
 322         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->searchbar, FALSE, FALSE, 0, GTK_PACK_START);
 323         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->scroll, TRUE, TRUE, 0, GTK_PACK_START);
 324         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 325         gtk_widget_hide_all(c->searchbar);
 326         gtk_widget_hide_all(c->urlbar);
 327         gtk_widget_show(c->vbox);
 328         gtk_widget_show(c->scroll);
 329         gtk_widget_show(GTK_WIDGET(c->view));
 330         gtk_widget_show(c->win);
 331         gdk_window_set_events(GTK_WIDGET(c->win)->window, GDK_ALL_EVENTS_MASK);
 332         gdk_window_add_filter(GTK_WIDGET(c->win)->window, processx, c);
 333         c->next = clients;
 334         clients = c;
 335         if(showxid)
 336                 printf("%u\n", (unsigned int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 337         return c;
 338 }
 339
 340 WebKitWebView *
 341 newwindow(WebKitWebView  *v, WebKitWebFrame *f, gpointer d) {
 342         /* TODO */
 343         Client *c = newclient();
 344         return c->view;
 345 }
 346
 347 void
 348 progresschange(WebKitWebView* view, gint p, gpointer d) {
 349         Client *c = (Client *)d;
 350
 351         c->progress = p;
 352         updatetitle(c);
 353 }
 354
 355 GdkFilterReturn
 356 processx(GdkXEvent *e, GdkEvent *event, gpointer d) {
 357         XPropertyEvent *ev;
 358         Client *c = (Client *)d;
 359         Atom adummy;
 360         int idummy;
 361         unsigned long ldummy;
 362         unsigned char *buf = NULL;
 363         if(((XEvent *)e)->type == PropertyNotify) {
 364                 ev = &((XEvent *)e)->xproperty;
 365                 if(ignore_once == FALSE && ev->atom == urlprop && ev->state == PropertyNewValue) {
 366                         XGetWindowProperty(dpy, ev->window, urlprop, 0L, BUFSIZ, False, XA_STRING,
 367                                 &adummy, &idummy, &ldummy, &ldummy, &buf);
 368                         loaduri(c, (gchar *)buf);
 369                         XFree(buf);
 370                         return GDK_FILTER_REMOVE;
 371                 }
 372         }
 373         return GDK_FILTER_CONTINUE;
 374 }
 375
 376 void setup(void) {
 377         dpy = GDK_DISPLAY();
 378         urlprop = XInternAtom(dpy, "_SURF_URL", False);
 379 }
 380
 381 void
 382 showsearch(Client *c) {
 383         hideurl(c);
 384         gtk_widget_show(c->searchbar);
 385         gtk_widget_grab_focus(c->searchbar);
 386 }
 387
 388 void
 389 showurl(Client *c) {
 390         gchar *uri;
 391
 392         hidesearch(c);
 393         uri = geturi(c);
 394         gtk_entry_set_text(GTK_ENTRY(c->urlbar), uri);
 395         gtk_widget_show(c->urlbar);
 396         gtk_widget_grab_focus(c->urlbar);
 397 }
 398
 399 void
 400 titlechange(WebKitWebView *v, WebKitWebFrame *f, const gchar *t, gpointer d) {
 401         Client *c = (Client *)d;
 402
 403         if(c->title)
 404                 g_free(c->title);
 405         c->title = g_strdup(t);
 406         updatetitle(c);
 407 }
 408
 409 void
 410 updatetitle(Client *c) {
 411         char t[512];
 412         if(c->progress == 100)
 413                 snprintf(t, LENGTH(t), "%s", c->title);
 414         else
 415                 snprintf(t, LENGTH(t), "%s [%i%%]", c->title, c->progress);
 416         gtk_window_set_title(GTK_WINDOW(c->win), t);
 417 }
 418
 419 int main(int argc, char *argv[]) {
 420         gchar *uri = NULL, *file = NULL;
 421         Client *c;
 422         int o;
 423
 424         gtk_init(NULL, NULL);
 425         if (!g_thread_supported())
 426                 g_thread_init(NULL);
 427         setup();
 428         while((o = getopt(argc, argv, "vhxeu:f:")) != -1)
 429                 switch(o) {
 430                 case 'x':
 431                         showxid = TRUE;
 432                         break;
 433                 case 'e':
 434                         showxid = TRUE;
 435                         embed = TRUE;
 436                         break;
 437                 case 'u':
 438                         if(!(uri = optarg))
 439                                 goto argerr;
 440                         c = newclient();
 441                         loaduri(c, uri);
 442                         updatetitle(c);
 443                         break;
 444                 case 'f':
 445                         if(!(file = optarg))
 446                                 goto argerr;
 447                         c = newclient();
 448                         loadfile(c, file);
 449                         updatetitle(c);
 450                         break;
 451                 case 'v':
 452                         die("surf-"VERSION", © 2009 surf engineers, see LICENSE for details\n");
 453                         break;
 454                 argerr:
 455                 default:
 456                         puts("surf - simple browser");
 457                         die("usage: surf [-e] [-x] [-u uri] [-f file]\n");
 458                         return EXIT_FAILURE;
 459                 }
 460         if(optind != argc)
 461                 goto argerr;
 462         if(!clients)
 463                 newclient();
 464         gtk_main();
 465         cleanup();
 466         return EXIT_SUCCESS;
 467 }