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 }
 158
 159 void
 160 progresschange(WebKitWebView* view, gint p, gpointer d) {
 161         Client *c = (Client *)d;
 162
 163         c->progress = p;
 164         updatetitle(c);
 165 }
 166
 167 void
 168 updatetitle(Client *c) {
 169         char t[512];
 170         if(c->progress == 100)
 171                 snprintf(t, LENGTH(t), "%s", c->title);
 172         else
 173                 snprintf(t, LENGTH(t), "%s [%i%%]", c->title, c->progress);
 174         gtk_window_set_title(GTK_WINDOW(c->win), t);
 175 }
 176
 177 void
 178 titlechange(WebKitWebView *v, WebKitWebFrame *f, const gchar *t, gpointer d) {
 179         Client *c = (Client *)d;
 180
 181         if(c->title)
 182                 g_free(c->title);
 183         c->title = g_strdup(t);
 184         updatetitle(c);
 185 }
 186
 187 void
 188 destroywin(GtkWidget* w, gpointer d) {
 189         Client *c = (Client *)d;
 190
 191         destroyclient(c);
 192 }
 193
 194 void
 195 destroyclient(Client *c) {
 196         Client *p;
 197
 198         gtk_widget_destroy(c->win);
 199         gtk_widget_destroy(c->scroll);
 200         gtk_widget_destroy(c->vbox);
 201         gtk_widget_destroy(c->urlbar);
 202         gtk_widget_destroy(c->urllist);
 203         gtk_widget_destroy(c->searchbar);
 204         if(clients == c && c->next == NULL)
 205                 gtk_main_quit();
 206         for(p = clients; p && p->next != c; p = p->next);
 207         if(p)
 208                 p->next = c->next;
 209         else
 210                 clients = c->next;
 211         free(c);
 212 }
 213
 214 gboolean
 215 keypress(GtkWidget* w, GdkEventKey *ev, gpointer d) {
 216         Client *c = (Client *)d;
 217
 218         if(ev->type == GDK_KEY_PRESS && (ev->state == GDK_CONTROL_MASK
 219                         || ev->state == (GDK_CONTROL_MASK | GDK_SHIFT_MASK))) {
 220                 switch(ev->keyval) {
 221                 case GDK_r:
 222                 case GDK_R:
 223                         if((ev->state & GDK_SHIFT_MASK))
 224                                  webkit_web_view_reload_bypass_cache(c->view);
 225                         else
 226                                  webkit_web_view_reload(c->view);
 227                         return TRUE;
 228                 case GDK_b:
 229                         return TRUE;
 230                 case GDK_g:
 231                         gtk_widget_hide(c->searchbar);
 232                         gtk_widget_show(c->urlbar);
 233                         return TRUE;
 234                 case GDK_slash:
 235                         gtk_widget_hide(c->urlbar);
 236                         gtk_widget_show(c->searchbar);
 237                         return TRUE;
 238                 case GDK_Left:
 239                         webkit_web_view_go_back(c->view);
 240                         return TRUE;
 241                 case GDK_Right:
 242                         webkit_web_view_go_forward(c->view);
 243                         return TRUE;
 244                 }
 245         }
 246         else if(ev->type == GDK_KEY_PRESS && ev->keyval == GDK_Escape) {
 247                 gtk_widget_hide(c->urlbar);
 248                 gtk_widget_hide(c->searchbar);
 249                 return TRUE;
 250         }
 251         return FALSE;
 252 }
 253
 254 void setup(void) {
 255         dpy = GDK_DISPLAY();
 256         urlprop = XInternAtom(dpy, "_SURF_URL", False);
 257 }
 258
 259 void die(char *str) {
 260         fputs(str, stderr);
 261         exit(EXIT_FAILURE);
 262 }
 263
 264 Client *
 265 newclient(void) {
 266         Client *c;
 267         if(!(c = calloc(1, sizeof(Client))))
 268                 die("Cannot malloc!\n");
 269         /* Window */
 270         if(embed) {
 271                 c->win = gtk_plug_new(0);
 272         }
 273         else {
 274                 c->win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 275                 gtk_window_set_wmclass(GTK_WINDOW(c->win), "surf", "surf");
 276         }
 277         gtk_window_set_default_size(GTK_WINDOW(c->win), 800, 600);
 278         g_signal_connect(G_OBJECT(c->win), "destroy", G_CALLBACK(destroywin), c);
 279         g_signal_connect(G_OBJECT(c->win), "key-press-event", G_CALLBACK(keypress), c);
 280
 281         /* VBox */
 282         c->vbox = gtk_vbox_new(FALSE, 0);
 283
 284         /* scrolled window */
 285         c->scroll = gtk_scrolled_window_new(NULL, NULL);
 286         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(c->scroll),
 287                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 288
 289         /* webview */
 290         c->view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 291
 292         g_signal_connect(G_OBJECT(c->view), "title-changed", G_CALLBACK(titlechange), c);
 293         g_signal_connect(G_OBJECT(c->view), "load-progress-changed", G_CALLBACK(progresschange), c);
 294         g_signal_connect(G_OBJECT(c->view), "load-committed", G_CALLBACK(loadcommit), c);
 295         g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
 296         g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(newwindow), c);
 297         g_signal_connect(G_OBJECT(c->view), "download-requested", G_CALLBACK(download), c);
 298
 299         /* urlbar */
 300         c->urlbar = gtk_entry_new();
 301         gtk_entry_set_has_frame(GTK_ENTRY(c->urlbar), FALSE);
 302
 303         /* searchbar */
 304         c->searchbar = gtk_entry_new();
 305         gtk_entry_set_has_frame(GTK_ENTRY(c->searchbar), FALSE);
 306
 307         /* Arranging */
 308         gtk_container_add(GTK_CONTAINER(c->scroll), GTK_WIDGET(c->view));
 309         gtk_container_add(GTK_CONTAINER(c->vbox), c->scroll);
 310         gtk_container_add(GTK_CONTAINER(c->win), c->vbox);
 311         gtk_container_add(GTK_CONTAINER(c->vbox), c->searchbar);
 312         gtk_container_add(GTK_CONTAINER(c->vbox), c->urlbar);
 313
 314         /* Setup */
 315         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->urlbar, FALSE, FALSE, 0, GTK_PACK_START);
 316         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->searchbar, FALSE, FALSE, 0, GTK_PACK_START);
 317         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->scroll, TRUE, TRUE, 0, GTK_PACK_START);
 318         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 319         gtk_widget_hide_all(c->searchbar);
 320         gtk_widget_hide_all(c->urlbar);
 321         gtk_widget_show(c->vbox);
 322         gtk_widget_show(c->scroll);
 323         gtk_widget_show(GTK_WIDGET(c->view));
 324         gtk_widget_show(c->win);
 325         gdk_window_set_events(GTK_WIDGET(c->win)->window, GDK_ALL_EVENTS_MASK);
 326         gdk_window_add_filter(GTK_WIDGET(c->win)->window, processx, c);
 327         c->next = clients;
 328         clients = c;
 329         if(showxid)
 330                 printf("%u\n", (unsigned int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 331         return c;
 332 }
 333
 334 int main(int argc, char *argv[]) {
 335         gchar *uri = NULL, *file = NULL;
 336         Client *c;
 337         int o;
 338
 339         gtk_init(NULL, NULL);
 340         if (!g_thread_supported())
 341                 g_thread_init(NULL);
 342         setup();
 343         while((o = getopt(argc, argv, "vhxeu:f:")) != -1)
 344                 switch(o) {
 345                 case 'x':
 346                         showxid = TRUE;
 347                         break;
 348                 case 'e':
 349                         showxid = TRUE;
 350                         embed = TRUE;
 351                         break;
 352                 case 'u':
 353                         if(!(uri = optarg))
 354                                 goto argerr;
 355                         c = newclient();
 356                         loaduri(c, uri);
 357                         updatetitle(c);
 358                         break;
 359                 case 'f':
 360                         if(!(file = optarg))
 361                                 goto argerr;
 362                         c = newclient();
 363                         loadfile(c, file);
 364                         updatetitle(c);
 365                         break;
 366                 case 'v':
 367                         die("surf-"VERSION", © 2009 surf engineers, see LICENSE for details\n");
 368                         break;
 369                 argerr:
 370                 default:
 371                         puts("surf - simple browser");
 372                         die("usage: surf [-e] [-x] [-u uri] [-f file]\n");
 373                         return EXIT_FAILURE;
 374                 }
 375         if(optind != argc)
 376                 goto argerr;
 377         if(!clients)
 378                 newclient();
 379         gtk_main();
 380         cleanup();
 381         return EXIT_SUCCESS;
 382 }