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 #include <glib/gstdio.h>
  18
  19 #define LENGTH(x) (sizeof x / sizeof x[0])
  20
  21 Display *dpy;
  22 Atom urlprop;
  23 typedef struct Client {
  24         GtkWidget *win, *scroll, *vbox, *urlbar, *searchbar;
  25         WebKitWebView *view;
  26         WebKitDownload * dl;
  27         gchar *title;
  28         gint progress;
  29         struct Client *next;
  30 } Client;
  31 Client *clients = NULL;
  32 gboolean embed = FALSE;
  33 gboolean showxid = FALSE;
  34 gboolean ignore_once = FALSE;
  35 extern char *optarg;
  36 extern int optind;
  37
  38 static void cleanup(void);
  39 static gboolean decidewindow(WebKitWebView *view, WebKitWebFrame *f,
  40                 WebKitNetworkRequest *r, WebKitWebNavigationAction *n,
  41                 WebKitWebPolicyDecision *p, gpointer d);
  42 static void destroyclient(Client *c);
  43 static void destroywin(GtkWidget* w, gpointer d);
  44 static void die(char *str);
  45 static gboolean download(WebKitWebView *view, WebKitDownload *o, gpointer d);
  46 static gchar *geturi(Client *c);
  47 static void hidesearch(Client *c);
  48 static void hideurl(Client *c);
  49 static gboolean keypress(GtkWidget* w, GdkEventKey *ev, gpointer d);
  50 static void linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d);
  51 static void loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d);
  52 static void loadfile(const Client *c, const gchar *f);
  53 static void loaduri(const Client *c, const gchar *uri);
  54 static Client *newclient();
  55 static WebKitWebView *newwindow(WebKitWebView  *v, WebKitWebFrame *f, gpointer d);
  56 static void progresschange(WebKitWebView *view, gint p, gpointer d);
  57 static GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event, gpointer data);
  58 static void setup(void);
  59 static void showsearch(Client *c);
  60 static void showurl(Client *c);
  61 static void titlechange(WebKitWebView* view, WebKitWebFrame* frame, const gchar* title, gpointer d);
  62 static void updatetitle(Client *c);
  63
  64 void
  65 cleanup(void) {
  66         while(clients)
  67                 destroyclient(clients);
  68 }
  69
  70 gboolean
  71 decidewindow(WebKitWebView *view, WebKitWebFrame *f,
  72                 WebKitNetworkRequest *r, WebKitWebNavigationAction *n,
  73                 WebKitWebPolicyDecision *p, gpointer d) {
  74         /* TODO */
  75         return TRUE;
  76 }
  77
  78 void
  79 destroyclient(Client *c) {
  80         Client *p;
  81
  82         gtk_widget_destroy(GTK_WIDGET(webkit_web_view_new()));
  83         gtk_widget_destroy(c->scroll);
  84         gtk_widget_destroy(c->urlbar);
  85         gtk_widget_destroy(c->searchbar);
  86         gtk_widget_destroy(c->vbox);
  87         gtk_widget_destroy(c->win);
  88         for(p = clients; p && p->next != c; p = p->next);
  89         if(p)
  90                 p->next = c->next;
  91         else
  92                 clients = c->next;
  93         free(c);
  94         if(clients == NULL)
  95                 gtk_main_quit();
  96 }
  97
  98 void
  99 destroywin(GtkWidget* w, gpointer d) {
 100         Client *c = (Client *)d;
 101
 102         destroyclient(c);
 103 }
 104
 105 void die(char *str) {
 106         fputs(str, stderr);
 107         exit(EXIT_FAILURE);
 108 }
 109
 110 gboolean
 111 download(WebKitWebView *view, WebKitDownload *o, gpointer d) {
 112         /* TODO */
 113         const gchar *home;
 114         gchar *uri, *filename;
 115
 116         home = g_get_home_dir();
 117         filename = g_build_filename(home, ".surf", "dl",
 118                         webkit_download_get_suggested_filename(o), NULL);
 119         g_mkdir(g_path_get_dirname(filename), 0755);
 120         uri = g_strconcat("file://", filename, NULL);
 121         webkit_download_set_destination_uri(o, uri);
 122         g_free(filename);
 123         g_free(uri);
 124         webkit_download_start(o);
 125         return TRUE;
 126 }
 127
 128 gchar *
 129 geturi(Client *c) {
 130         gchar *uri;
 131
 132         if(!(uri = (gchar *)webkit_web_view_get_uri(c->view)))
 133                 uri = g_strdup("about:blank");
 134         return uri;
 135 }
 136
 137 void
 138 hidesearch(Client *c) {
 139         gtk_widget_hide(c->searchbar);
 140         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 141 }
 142
 143 void
 144 hideurl(Client *c) {
 145         gtk_widget_hide(c->urlbar);
 146         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 147 }
 148
 149 gboolean
 150 keypress(GtkWidget* w, GdkEventKey *ev, gpointer d) {
 151         Client *c = (Client *)d;
 152
 153         if(ev->type != GDK_KEY_PRESS)
 154                 return FALSE;
 155         if(GTK_WIDGET_HAS_FOCUS(c->searchbar)) {
 156                 switch(ev->keyval) {
 157                 case GDK_Escape:
 158                         hidesearch(c);
 159                         return TRUE;
 160                 case GDK_Return:
 161                         webkit_web_view_search_text(c->view,
 162                                         gtk_entry_get_text(GTK_ENTRY(c->searchbar)),
 163                                         FALSE,
 164                                         !(ev->state & GDK_SHIFT_MASK),
 165                                         TRUE);
 166                         return TRUE;
 167                 case GDK_Left:
 168                 case GDK_Right:
 169                 case GDK_r:
 170                         return FALSE;
 171                 }
 172         }
 173         else if(GTK_WIDGET_HAS_FOCUS(c->urlbar)) {
 174                 switch(ev->keyval) {
 175                 case GDK_Escape:
 176                         hideurl(c);
 177                         return TRUE;
 178                 case GDK_Return:
 179                         loaduri(c, gtk_entry_get_text(GTK_ENTRY(c->urlbar)));
 180                         hideurl(c);
 181                         return TRUE;
 182                 case GDK_Left:
 183                 case GDK_Right:
 184                 case GDK_r:
 185                         return FALSE;
 186                 }
 187         }
 188         if(ev->state == GDK_CONTROL_MASK || ev->state == (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) {
 189                 switch(ev->keyval) {
 190                 case GDK_r:
 191                 case GDK_R:
 192                         if((ev->state & GDK_SHIFT_MASK))
 193                                  webkit_web_view_reload_bypass_cache(c->view);
 194                         else
 195                                  webkit_web_view_reload(c->view);
 196                         return TRUE;
 197                 case GDK_b:
 198                         return TRUE;
 199                 case GDK_g:
 200                         showurl(c);
 201                         return TRUE;
 202                 case GDK_slash:
 203                         showsearch(c);
 204                         return TRUE;
 205                 case GDK_Left:
 206                         webkit_web_view_go_back(c->view);
 207                         return TRUE;
 208                 case GDK_Right:
 209                         webkit_web_view_go_forward(c->view);
 210                         return TRUE;
 211                 }
 212         }
 213         return FALSE;
 214 }
 215
 216 void
 217 linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d) {
 218         Client *c = (Client *)d;
 219
 220         if(l)
 221                 gtk_window_set_title(GTK_WINDOW(c->win), l);
 222         else
 223                 updatetitle(c);
 224 }
 225
 226 void
 227 loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d) {
 228         Client *c = (Client *)d;
 229         gchar *uri;
 230
 231         uri = geturi(c);
 232         ignore_once = TRUE;
 233         XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window), urlprop,
 234                         XA_STRING, 8, PropModeReplace, (unsigned char *)uri,
 235                         strlen(uri) + 1);
 236 }
 237
 238 void
 239 loadfile(const Client *c, const gchar *f) {
 240         GIOChannel *chan = NULL;
 241         GError *e = NULL;
 242         GString *code = g_string_new("");
 243         GString *uri = g_string_new(f);
 244         gchar *line;
 245
 246         if(strcmp(f, "-") == 0) {
 247                 chan = g_io_channel_unix_new(STDIN_FILENO);
 248                 if (chan) {
 249                         while(g_io_channel_read_line(chan, &line, NULL, NULL,
 250                                                 &e) == G_IO_STATUS_NORMAL) {
 251                                 g_string_append(code, line);
 252                                 g_free(line);
 253                         }
 254                         webkit_web_view_load_html_string(c->view, code->str,
 255                                         "file://.");
 256                         g_io_channel_shutdown(chan, FALSE, NULL);
 257                 }
 258         }
 259         else {
 260                 g_string_prepend(uri, "file://");
 261                 loaduri(c, uri->str);
 262         }
 263
 264 }
 265
 266 void
 267 loaduri(const Client *c, const gchar *uri) {
 268         GString* u = g_string_new(uri);
 269         if(g_strrstr(u->str, ":") == NULL)
 270                 g_string_prepend(u, "http://");
 271         webkit_web_view_load_uri(c->view, u->str);
 272         g_string_free(u, TRUE);
 273 }
 274
 275 Client *
 276 newclient(void) {
 277         Client *c;
 278         if(!(c = calloc(1, sizeof(Client))))
 279                 die("Cannot malloc!\n");
 280         /* Window */
 281         if(embed) {
 282                 c->win = gtk_plug_new(0);
 283         }
 284         else {
 285                 c->win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 286                 gtk_window_set_wmclass(GTK_WINDOW(c->win), "surf", "surf");
 287         }
 288         gtk_window_set_default_size(GTK_WINDOW(c->win), 800, 600);
 289         g_signal_connect(G_OBJECT(c->win), "destroy", G_CALLBACK(destroywin), c);
 290         g_signal_connect(G_OBJECT(c->win), "key-press-event", G_CALLBACK(keypress), c);
 291
 292         /* VBox */
 293         c->vbox = gtk_vbox_new(FALSE, 0);
 294
 295         /* scrolled window */
 296         c->scroll = gtk_scrolled_window_new(NULL, NULL);
 297         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(c->scroll),
 298                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 299
 300         /* webview */
 301         c->view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 302         g_signal_connect(G_OBJECT(c->view), "title-changed", G_CALLBACK(titlechange), c);
 303         g_signal_connect(G_OBJECT(c->view), "load-progress-changed", G_CALLBACK(progresschange), c);
 304         g_signal_connect(G_OBJECT(c->view), "load-committed", G_CALLBACK(loadcommit), c);
 305         g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
 306         g_signal_connect(G_OBJECT(c->view), "create-web-view", G_CALLBACK(newwindow), c);
 307         g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(decidewindow), c);
 308         g_signal_connect(G_OBJECT(c->view), "download-requested", G_CALLBACK(download), c);
 309
 310         /* urlbar */
 311         c->urlbar = gtk_entry_new();
 312         gtk_entry_set_has_frame(GTK_ENTRY(c->urlbar), FALSE);
 313
 314         /* searchbar */
 315         c->searchbar = gtk_entry_new();
 316         gtk_entry_set_has_frame(GTK_ENTRY(c->searchbar), FALSE);
 317
 318         /* Arranging */
 319         gtk_container_add(GTK_CONTAINER(c->scroll), GTK_WIDGET(c->view));
 320         gtk_container_add(GTK_CONTAINER(c->win), c->vbox);
 321         gtk_container_add(GTK_CONTAINER(c->vbox), c->scroll);
 322         gtk_container_add(GTK_CONTAINER(c->vbox), c->searchbar);
 323         gtk_container_add(GTK_CONTAINER(c->vbox), c->urlbar);
 324
 325         /* Setup */
 326         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->urlbar, FALSE, FALSE, 0, GTK_PACK_START);
 327         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->searchbar, FALSE, FALSE, 0, GTK_PACK_START);
 328         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->scroll, TRUE, TRUE, 0, GTK_PACK_START);
 329         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 330         gtk_widget_hide_all(c->searchbar);
 331         gtk_widget_hide_all(c->urlbar);
 332         gtk_widget_show(c->vbox);
 333         gtk_widget_show(c->scroll);
 334         gtk_widget_show(GTK_WIDGET(c->view));
 335         gtk_widget_show(c->win);
 336         gdk_window_set_events(GTK_WIDGET(c->win)->window, GDK_ALL_EVENTS_MASK);
 337         gdk_window_add_filter(GTK_WIDGET(c->win)->window, processx, c);
 338         c->next = clients;
 339         clients = c;
 340         if(showxid)
 341                 printf("%u\n", (unsigned int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 342         return c;
 343 }
 344
 345 WebKitWebView *
 346 newwindow(WebKitWebView  *v, WebKitWebFrame *f, gpointer d) {
 347         Client *c = newclient();
 348         return c->view;
 349 }
 350
 351 void
 352 progresschange(WebKitWebView* view, gint p, gpointer d) {
 353         Client *c = (Client *)d;
 354
 355         c->progress = p;
 356         updatetitle(c);
 357 }
 358
 359 GdkFilterReturn
 360 processx(GdkXEvent *e, GdkEvent *event, gpointer d) {
 361         XPropertyEvent *ev;
 362         Client *c = (Client *)d;
 363         Atom adummy;
 364         int idummy;
 365         unsigned long ldummy;
 366         unsigned char *buf = NULL;
 367         if(((XEvent *)e)->type == PropertyNotify) {
 368                 ev = &((XEvent *)e)->xproperty;
 369                 if(ignore_once == FALSE && ev->atom == urlprop && ev->state == PropertyNewValue) {
 370                         XGetWindowProperty(dpy, ev->window, urlprop, 0L, BUFSIZ, False, XA_STRING,
 371                                 &adummy, &idummy, &ldummy, &ldummy, &buf);
 372                         loaduri(c, (gchar *)buf);
 373                         XFree(buf);
 374                         return GDK_FILTER_REMOVE;
 375                 }
 376         }
 377         return GDK_FILTER_CONTINUE;
 378 }
 379
 380 void setup(void) {
 381         dpy = GDK_DISPLAY();
 382         urlprop = XInternAtom(dpy, "_SURF_URL", False);
 383 }
 384
 385 void
 386 showsearch(Client *c) {
 387         hideurl(c);
 388         gtk_widget_show(c->searchbar);
 389         gtk_widget_grab_focus(c->searchbar);
 390 }
 391
 392 void
 393 showurl(Client *c) {
 394         gchar *uri;
 395
 396         hidesearch(c);
 397         uri = geturi(c);
 398         gtk_entry_set_text(GTK_ENTRY(c->urlbar), uri);
 399         gtk_widget_show(c->urlbar);
 400         gtk_widget_grab_focus(c->urlbar);
 401 }
 402
 403 void
 404 titlechange(WebKitWebView *v, WebKitWebFrame *f, const gchar *t, gpointer d) {
 405         Client *c = (Client *)d;
 406
 407         if(c->title)
 408                 g_free(c->title);
 409         c->title = g_strdup(t);
 410         updatetitle(c);
 411 }
 412
 413 void
 414 updatetitle(Client *c) {
 415         char t[512];
 416         if(c->progress == 100)
 417                 snprintf(t, LENGTH(t), "%s", c->title);
 418         else
 419                 snprintf(t, LENGTH(t), "%s [%i%%]", c->title, c->progress);
 420         gtk_window_set_title(GTK_WINDOW(c->win), t);
 421 }
 422
 423 int main(int argc, char *argv[]) {
 424         gchar *uri = NULL, *file = NULL;
 425         Client *c;
 426         int o;
 427
 428         gtk_init(NULL, NULL);
 429         if (!g_thread_supported())
 430                 g_thread_init(NULL);
 431         setup();
 432         while((o = getopt(argc, argv, "vhxeu:f:")) != -1)
 433                 switch(o) {
 434                 case 'x':
 435                         showxid = TRUE;
 436                         break;
 437                 case 'e':
 438                         showxid = TRUE;
 439                         embed = TRUE;
 440                         break;
 441                 case 'u':
 442                         if(!(uri = optarg))
 443                                 goto argerr;
 444                         c = newclient();
 445                         loaduri(c, uri);
 446                         updatetitle(c);
 447                         break;
 448                 case 'f':
 449                         if(!(file = optarg))
 450                                 goto argerr;
 451                         c = newclient();
 452                         loadfile(c, file);
 453                         updatetitle(c);
 454                         break;
 455                 case 'v':
 456                         die("surf-"VERSION", © 2009 surf engineers, see LICENSE for details\n");
 457                         break;
 458                 argerr:
 459                 default:
 460                         puts("surf - simple browser");
 461                         die("usage: surf [-e] [-x] [-u uri] [-f file]\n");
 462                         return EXIT_FAILURE;
 463                 }
 464         if(optind != argc)
 465                 goto argerr;
 466         if(!clients)
 467                 newclient();
 468         gtk_main();
 469         cleanup();
 470         return EXIT_SUCCESS;
 471 }