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, 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->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, WebKitDownload *o, gpointer d) {
 111         /* TODO */
 112         const gchar *home;
 113         gchar *uri, *filename;
 114
 115         home = g_get_home_dir();
 116         filename = g_build_filename(home, "Desktop",
 117                         webkit_download_get_suggested_filename(o), NULL);
 118         uri = g_strconcat("file://", filename, NULL);
 119         webkit_download_set_destination_uri(o, uri);
 120         g_free(filename);
 121         g_free(uri);
 122         webkit_download_start(o);
 123         return TRUE;
 124 }
 125
 126 gchar *
 127 geturi(Client *c) {
 128         gchar *uri;
 129
 130         if(!(uri = (gchar *)webkit_web_view_get_uri(c->view)))
 131                 uri = g_strdup("about:blank");
 132         return uri;
 133 }
 134
 135 void
 136 hidesearch(Client *c) {
 137         gtk_widget_hide(c->searchbar);
 138         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 139 }
 140
 141 void
 142 hideurl(Client *c) {
 143         gtk_widget_hide(c->urlbar);
 144         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 145 }
 146
 147 gboolean
 148 keypress(GtkWidget* w, GdkEventKey *ev, gpointer d) {
 149         Client *c = (Client *)d;
 150
 151         if(ev->type != GDK_KEY_PRESS)
 152                 return FALSE;
 153         if(GTK_WIDGET_HAS_FOCUS(c->searchbar)) {
 154                 switch(ev->keyval) {
 155                 case GDK_Escape:
 156                         hidesearch(c);
 157                         return TRUE;
 158                 case GDK_Return:
 159                         webkit_web_view_search_text(c->view,
 160                                         gtk_entry_get_text(GTK_ENTRY(c->searchbar)),
 161                                         FALSE,
 162                                         !(ev->state & GDK_SHIFT_MASK),
 163                                         TRUE);
 164                         return TRUE;
 165                 case GDK_Left:
 166                 case GDK_Right:
 167                 case GDK_r:
 168                         return FALSE;
 169                 }
 170         }
 171         else if(GTK_WIDGET_HAS_FOCUS(c->urlbar)) {
 172                 switch(ev->keyval) {
 173                 case GDK_Escape:
 174                         hideurl(c);
 175                         return TRUE;
 176                 case GDK_Return:
 177                         loaduri(c, gtk_entry_get_text(GTK_ENTRY(c->urlbar)));
 178                         hideurl(c);
 179                         return TRUE;
 180                 case GDK_Left:
 181                 case GDK_Right:
 182                 case GDK_r:
 183                         return FALSE;
 184                 }
 185         }
 186         if(ev->state == GDK_CONTROL_MASK || ev->state == (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) {
 187                 switch(ev->keyval) {
 188                 case GDK_r:
 189                 case GDK_R:
 190                         if((ev->state & GDK_SHIFT_MASK))
 191                                  webkit_web_view_reload_bypass_cache(c->view);
 192                         else
 193                                  webkit_web_view_reload(c->view);
 194                         return TRUE;
 195                 case GDK_b:
 196                         return TRUE;
 197                 case GDK_g:
 198                         showurl(c);
 199                         return TRUE;
 200                 case GDK_slash:
 201                         showsearch(c);
 202                         return TRUE;
 203                 case GDK_Left:
 204                         webkit_web_view_go_back(c->view);
 205                         return TRUE;
 206                 case GDK_Right:
 207                         webkit_web_view_go_forward(c->view);
 208                         return TRUE;
 209                 }
 210         }
 211         return FALSE;
 212 }
 213
 214 void
 215 linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d) {
 216         Client *c = (Client *)d;
 217
 218         if(l)
 219                 gtk_window_set_title(GTK_WINDOW(c->win), l);
 220         else
 221                 updatetitle(c);
 222 }
 223
 224 void
 225 loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d) {
 226         Client *c = (Client *)d;
 227         gchar *uri;
 228
 229         uri = geturi(c);
 230         ignore_once = TRUE;
 231         XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window), urlprop,
 232                         XA_STRING, 8, PropModeReplace, (unsigned char *)uri,
 233                         strlen(uri) + 1);
 234 }
 235
 236 void
 237 loadfile(const Client *c, const gchar *f) {
 238         GIOChannel *chan = NULL;
 239         GError *e = NULL;
 240         GString *code = g_string_new("");
 241         GString *uri = g_string_new(f);
 242         gchar *line;
 243
 244         if(strcmp(f, "-") == 0) {
 245                 chan = g_io_channel_unix_new(STDIN_FILENO);
 246                 if (chan) {
 247                         while(g_io_channel_read_line(chan, &line, NULL, NULL, &e) == G_IO_STATUS_NORMAL) {
 248                                 g_string_append(code, line);
 249                                 g_free(line);
 250                         }
 251                         webkit_web_view_load_html_string(c->view, code->str, NULL);
 252                         g_io_channel_shutdown(chan, FALSE, NULL);
 253                 }
 254         }
 255         else {
 256                 g_string_prepend(uri, "file://");
 257                 loaduri(c, uri->str);
 258         }
 259
 260 }
 261
 262 void
 263 loaduri(const Client *c, const gchar *uri) {
 264         GString* u = g_string_new(uri);
 265         if(g_strrstr(u->str, ":") == NULL)
 266                 g_string_prepend(u, "http://");
 267         webkit_web_view_load_uri(c->view, u->str);
 268         g_string_free(u, TRUE);
 269 }
 270
 271 Client *
 272 newclient(void) {
 273         Client *c;
 274         if(!(c = calloc(1, sizeof(Client))))
 275                 die("Cannot malloc!\n");
 276         /* Window */
 277         if(embed) {
 278                 c->win = gtk_plug_new(0);
 279         }
 280         else {
 281                 c->win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 282                 gtk_window_set_wmclass(GTK_WINDOW(c->win), "surf", "surf");
 283         }
 284         gtk_window_set_default_size(GTK_WINDOW(c->win), 800, 600);
 285         g_signal_connect(G_OBJECT(c->win), "destroy", G_CALLBACK(destroywin), c);
 286         g_signal_connect(G_OBJECT(c->win), "key-press-event", G_CALLBACK(keypress), c);
 287
 288         /* VBox */
 289         c->vbox = gtk_vbox_new(FALSE, 0);
 290
 291         /* scrolled window */
 292         c->scroll = gtk_scrolled_window_new(NULL, NULL);
 293         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(c->scroll),
 294                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 295
 296         /* webview */
 297         c->view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 298         g_signal_connect(G_OBJECT(c->view), "title-changed", G_CALLBACK(titlechange), c);
 299         g_signal_connect(G_OBJECT(c->view), "load-progress-changed", G_CALLBACK(progresschange), c);
 300         g_signal_connect(G_OBJECT(c->view), "load-committed", G_CALLBACK(loadcommit), c);
 301         g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
 302         g_signal_connect(G_OBJECT(c->view), "create-web-view", G_CALLBACK(newwindow), c);
 303         g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(decidewindow), c);
 304         g_signal_connect(G_OBJECT(c->view), "download-requested", G_CALLBACK(download), c);
 305
 306         /* urlbar */
 307         c->urlbar = gtk_entry_new();
 308         gtk_entry_set_has_frame(GTK_ENTRY(c->urlbar), FALSE);
 309
 310         /* searchbar */
 311         c->searchbar = gtk_entry_new();
 312         gtk_entry_set_has_frame(GTK_ENTRY(c->searchbar), FALSE);
 313
 314         /* Arranging */
 315         gtk_container_add(GTK_CONTAINER(c->scroll), GTK_WIDGET(c->view));
 316         gtk_container_add(GTK_CONTAINER(c->win), c->vbox);
 317         gtk_container_add(GTK_CONTAINER(c->vbox), c->scroll);
 318         gtk_container_add(GTK_CONTAINER(c->vbox), c->searchbar);
 319         gtk_container_add(GTK_CONTAINER(c->vbox), c->urlbar);
 320
 321         /* Setup */
 322         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->urlbar, FALSE, FALSE, 0, GTK_PACK_START);
 323         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->searchbar, FALSE, FALSE, 0, GTK_PACK_START);
 324         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->scroll, TRUE, TRUE, 0, GTK_PACK_START);
 325         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 326         gtk_widget_hide_all(c->searchbar);
 327         gtk_widget_hide_all(c->urlbar);
 328         gtk_widget_show(c->vbox);
 329         gtk_widget_show(c->scroll);
 330         gtk_widget_show(GTK_WIDGET(c->view));
 331         gtk_widget_show(c->win);
 332         gdk_window_set_events(GTK_WIDGET(c->win)->window, GDK_ALL_EVENTS_MASK);
 333         gdk_window_add_filter(GTK_WIDGET(c->win)->window, processx, c);
 334         c->next = clients;
 335         clients = c;
 336         if(showxid)
 337                 printf("%u\n", (unsigned int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 338         return c;
 339 }
 340
 341 WebKitWebView *
 342 newwindow(WebKitWebView  *v, WebKitWebFrame *f, gpointer d) {
 343         /* TODO */
 344         Client *c = newclient();
 345         return c->view;
 346 }
 347
 348 void
 349 progresschange(WebKitWebView* view, gint p, gpointer d) {
 350         Client *c = (Client *)d;
 351
 352         c->progress = p;
 353         updatetitle(c);
 354 }
 355
 356 GdkFilterReturn
 357 processx(GdkXEvent *e, GdkEvent *event, gpointer d) {
 358         XPropertyEvent *ev;
 359         Client *c = (Client *)d;
 360         Atom adummy;
 361         int idummy;
 362         unsigned long ldummy;
 363         unsigned char *buf = NULL;
 364         if(((XEvent *)e)->type == PropertyNotify) {
 365                 ev = &((XEvent *)e)->xproperty;
 366                 if(ignore_once == FALSE && ev->atom == urlprop && ev->state == PropertyNewValue) {
 367                         XGetWindowProperty(dpy, ev->window, urlprop, 0L, BUFSIZ, False, XA_STRING,
 368                                 &adummy, &idummy, &ldummy, &ldummy, &buf);
 369                         loaduri(c, (gchar *)buf);
 370                         XFree(buf);
 371                         return GDK_FILTER_REMOVE;
 372                 }
 373         }
 374         return GDK_FILTER_CONTINUE;
 375 }
 376
 377 void setup(void) {
 378         dpy = GDK_DISPLAY();
 379         urlprop = XInternAtom(dpy, "_SURF_URL", False);
 380 }
 381
 382 void
 383 showsearch(Client *c) {
 384         hideurl(c);
 385         gtk_widget_show(c->searchbar);
 386         gtk_widget_grab_focus(c->searchbar);
 387 }
 388
 389 void
 390 showurl(Client *c) {
 391         gchar *uri;
 392
 393         hidesearch(c);
 394         uri = geturi(c);
 395         gtk_entry_set_text(GTK_ENTRY(c->urlbar), uri);
 396         gtk_widget_show(c->urlbar);
 397         gtk_widget_grab_focus(c->urlbar);
 398 }
 399
 400 void
 401 titlechange(WebKitWebView *v, WebKitWebFrame *f, const gchar *t, gpointer d) {
 402         Client *c = (Client *)d;
 403
 404         if(c->title)
 405                 g_free(c->title);
 406         c->title = g_strdup(t);
 407         updatetitle(c);
 408 }
 409
 410 void
 411 updatetitle(Client *c) {
 412         char t[512];
 413         if(c->progress == 100)
 414                 snprintf(t, LENGTH(t), "%s", c->title);
 415         else
 416                 snprintf(t, LENGTH(t), "%s [%i%%]", c->title, c->progress);
 417         gtk_window_set_title(GTK_WINDOW(c->win), t);
 418 }
 419
 420 int main(int argc, char *argv[]) {
 421         gchar *uri = NULL, *file = NULL;
 422         Client *c;
 423         int o;
 424
 425         gtk_init(NULL, NULL);
 426         if (!g_thread_supported())
 427                 g_thread_init(NULL);
 428         setup();
 429         while((o = getopt(argc, argv, "vhxeu:f:")) != -1)
 430                 switch(o) {
 431                 case 'x':
 432                         showxid = TRUE;
 433                         break;
 434                 case 'e':
 435                         showxid = TRUE;
 436                         embed = TRUE;
 437                         break;
 438                 case 'u':
 439                         if(!(uri = optarg))
 440                                 goto argerr;
 441                         c = newclient();
 442                         loaduri(c, uri);
 443                         updatetitle(c);
 444                         break;
 445                 case 'f':
 446                         if(!(file = optarg))
 447                                 goto argerr;
 448                         c = newclient();
 449                         loadfile(c, file);
 450                         updatetitle(c);
 451                         break;
 452                 case 'v':
 453                         die("surf-"VERSION", © 2009 surf engineers, see LICENSE for details\n");
 454                         break;
 455                 argerr:
 456                 default:
 457                         puts("surf - simple browser");
 458                         die("usage: surf [-e] [-x] [-u uri] [-f file]\n");
 459                         return EXIT_FAILURE;
 460                 }
 461         if(optind != argc)
 462                 goto argerr;
 463         if(!clients)
 464                 newclient();
 465         gtk_main();
 466         cleanup();
 467         return EXIT_SUCCESS;
 468 }