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