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