surf.c

   1 #include <X11/X.h>
   2 #include <X11/Xatom.h>
   3 #include <gtk/gtk.h>
   4 #include <gdk/gdkx.h>
   5 #include <gdk/gdk.h>
   6 #include <string.h>
   7 #include <unistd.h>
   8 #include <stdlib.h>
   9 #include <stdio.h>
  10 #include <webkit/webkit.h>
  11
  12 #define LENGTH(x) (sizeof x / sizeof x[0])
  13 /* Plan9-style Argument parsing */
  14 /* Vars: _c -> count; _b -> break; _a -> argument */
  15 #define ARG int _c, _b; char *_a; \
  16         for(_c = 1; _c < argc && argv[_c][0] == '-' && argv[_c][1] && \
  17                         (strcmp(argv[_c], "--") != 0); _c++) \
  18                 for(_a = &argv[_c][1], _b = 0; !_b && *_a; _a++ ) \
  19                         switch(*_a)
  20 #define ARGVAL()        (!_b && _a[1] && (_b = 1) ? &_a[1] : _c + 1 == argc ? \
  21                 0 : argv[++_c])
  22 #define ARGCHR()        (*_a)
  23 #define ARGC()          _c
  24
  25 Display *dpy;
  26 Atom urlprop;
  27 GtkWidget *win;
  28 GtkWidget *browser;
  29 WebKitWebView *view;
  30 gchar *title;
  31 gint progress = 100;
  32 gboolean embed = FALSE;
  33 gboolean showxid = FALSE;
  34 gboolean ignore_once = FALSE;
  35
  36 static void setup(void);
  37 static void cleanup(void);
  38 static void updatetitle(void);
  39 static void windestroy(GtkWidget* w, gpointer d);
  40 static gboolean keypress(GtkWidget* w, GdkEventKey *ev);
  41 static void titlechange(WebKitWebView* view, WebKitWebFrame* frame, const gchar* title, gpointer d);
  42 static void progresschange(WebKitWebView *view, gint p, gpointer d);
  43 static void loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d);
  44 static void linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d);
  45 static gboolean newwindow(WebKitWebView *view, WebKitWebFrame *f,
  46                 WebKitNetworkRequest *r, WebKitWebNavigationAction *n,
  47                 WebKitWebPolicyDecision *p, gpointer d);
  48 static gboolean download(WebKitWebView *view, GObject *o, gpointer d);
  49 static void loaduri(gchar *uri);
  50 static void loadfile(gchar *f);
  51 static void setupx();
  52 GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event, gpointer data);
  53
  54 GdkFilterReturn
  55 processx(GdkXEvent *e, GdkEvent *event, gpointer data) {
  56         XPropertyEvent *ev;
  57         Atom adummy;
  58         int idummy;
  59         unsigned long ldummy;
  60         unsigned char *buf = NULL;
  61         if(((XEvent *)e)->type == PropertyNotify) {
  62                 ev = &((XEvent *)e)->xproperty;
  63                 if(ignore_once == FALSE && ev->atom == urlprop && ev->state == PropertyNewValue) {
  64                         XGetWindowProperty(dpy, ev->window, urlprop, 0L, BUFSIZ, False, XA_STRING,
  65                         &adummy, &idummy, &ldummy, &ldummy, &buf);
  66                         loaduri((gchar *)buf);
  67                         XFree(buf);
  68                         return GDK_FILTER_REMOVE;
  69                 }
  70                 ignore_once = FALSE;
  71         }
  72         return GDK_FILTER_CONTINUE;
  73 }
  74
  75 void
  76 setupx() {
  77         dpy = GDK_WINDOW_XDISPLAY(GTK_WIDGET(win)->window);
  78         urlprop = XInternAtom(dpy, "_SURF_URL", False);
  79         gdk_window_add_filter(GTK_WIDGET(win)->window, processx, NULL);
  80         gdk_window_set_events(GTK_WIDGET(win)->window, GDK_ALL_EVENTS_MASK);
  81 }
  82
  83 void
  84 loadfile(gchar *f) {
  85         GIOChannel *c = NULL;
  86         GError *e = NULL;
  87         GString *code = g_string_new("");
  88         GString *uri = g_string_new(f);
  89         gchar *line;
  90
  91         if(strcmp(f, "-") == 0) {
  92                 c = g_io_channel_unix_new(STDIN_FILENO);
  93                 if (c) {
  94                         while(g_io_channel_read_line(c, &line, NULL, NULL, &e) == G_IO_STATUS_NORMAL) {
  95                                 g_string_append(code, line);
  96                                 g_free(line);
  97                         }
  98                         webkit_web_view_load_html_string(view, code->str, NULL);
  99                         g_free(code);
 100                         g_io_channel_shutdown(c, FALSE, NULL);
 101                 }
 102         }
 103         else {
 104                 g_string_prepend(uri, "file://");
 105                 loaduri(uri->str);
 106         }
 107
 108 }
 109
 110 static void loaduri(gchar *uri) {
 111         GString* u = g_string_new(uri);
 112         if(g_strrstr(u->str, "://") == NULL)
 113                 g_string_prepend(u, "http://");
 114         webkit_web_view_load_uri(view, u->str);
 115         g_string_free(u, TRUE);
 116 }
 117
 118 gboolean
 119 download(WebKitWebView *view, GObject *o, gpointer d) {
 120         /* TODO */
 121         return FALSE;
 122 }
 123
 124 gboolean
 125 newwindow(WebKitWebView *view, WebKitWebFrame *f,
 126                 WebKitNetworkRequest *r, WebKitWebNavigationAction *n,
 127                 WebKitWebPolicyDecision *p, gpointer d) {
 128         /* TODO */
 129         return FALSE;
 130 }
 131 void
 132 linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d) {
 133         /* TODO */
 134 }
 135
 136 void
 137 loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d) {
 138         gchar *uri;
 139
 140         if(!(uri = (gchar *)webkit_web_view_get_uri(view)))
 141                 uri = "(null)";
 142         ignore_once = TRUE;
 143         XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(win)->window), urlprop,
 144                         XA_STRING, 8, PropModeReplace, (unsigned char *)uri,
 145                         strlen(uri) + 1);
 146 }
 147
 148 void
 149 progresschange(WebKitWebView* view, gint p, gpointer d) {
 150         progress = p;
 151         updatetitle();
 152 }
 153
 154 void
 155 updatetitle() {
 156         char t[512];
 157         if(progress == 100)
 158                 snprintf(t, LENGTH(t), "%s", title);
 159         else
 160                 snprintf(t, LENGTH(t), "%s [%i%%]", title, progress);
 161         gtk_window_set_title(GTK_WINDOW(win), t);
 162 }
 163
 164 void
 165 titlechange(WebKitWebView *v, WebKitWebFrame *f, const gchar *t, gpointer d) {
 166         if(title)
 167                 g_free(title);
 168         title = g_strdup(t);
 169         updatetitle();
 170 }
 171
 172 void
 173 windestroy(GtkWidget* w, gpointer d) {
 174         gtk_main_quit();
 175 }
 176
 177 gboolean
 178 keypress(GtkWidget* w, GdkEventKey *ev) {
 179         /* TODO */
 180         return FALSE;
 181 }
 182
 183 void setup(void) {
 184         if(embed) {
 185                 win = gtk_plug_new(0);
 186         }
 187         else {
 188                 win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 189                 gtk_window_set_wmclass(GTK_WINDOW(win), "surf", "surf");
 190         }
 191         gtk_window_set_default_size(GTK_WINDOW(win), 800, 600);
 192         browser = gtk_scrolled_window_new(NULL, NULL);
 193         g_signal_connect (G_OBJECT(win), "destroy", G_CALLBACK(windestroy), NULL);
 194         g_signal_connect (G_OBJECT(win), "key-press-event", G_CALLBACK(keypress), NULL);
 195
 196         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(browser),
 197                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 198         view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 199         gtk_container_add(GTK_CONTAINER(browser), GTK_WIDGET(view));
 200
 201         g_signal_connect(G_OBJECT(view), "title-changed", G_CALLBACK(titlechange), view);
 202         g_signal_connect(G_OBJECT(view), "load-progress-changed", G_CALLBACK(progresschange), view);
 203         g_signal_connect(G_OBJECT(view), "load-committed", G_CALLBACK(loadcommit), view);
 204         g_signal_connect(G_OBJECT(view), "hovering-over-link", G_CALLBACK(linkhover), view);
 205         g_signal_connect(G_OBJECT(view), "new-window-policy-decision-requested", G_CALLBACK(newwindow), view);
 206         g_signal_connect(G_OBJECT(view), "download-requested", G_CALLBACK(download), view);
 207         /* g_signal_connect(G_OBJECT(view), "create-web-view", G_CALLBACK(createwebview), view); */
 208
 209         gtk_container_add(GTK_CONTAINER(win), browser);
 210         gtk_widget_grab_focus(GTK_WIDGET(view));
 211         gtk_widget_show_all(win);
 212         if(showxid)
 213                 printf("%u\n", (unsigned int)GDK_WINDOW_XID(GTK_WIDGET(win)->window));
 214 }
 215
 216 void cleanup() {
 217 }
 218
 219 int main(int argc, char *argv[]) {
 220         gchar *uri = NULL, *file = NULL;
 221
 222         ARG {
 223         case 'x':
 224                 showxid = TRUE;
 225                 break;
 226         case 'e':
 227                 showxid = TRUE;
 228                 embed = TRUE;
 229                 break;
 230         case 'u':
 231                 if(!(uri = ARGVAL()))
 232                         goto argerr;
 233                 break;
 234         case 'f':
 235                 if(!(file = ARGVAL()))
 236                         goto argerr;
 237                 break;
 238         argerr:
 239         default:
 240                 puts("surf - simple browser");
 241                 printf("usage: %s [-e] [-u uri] [-f file]", argv[0]);
 242                 return EXIT_FAILURE;
 243         }
 244         if(argc != ARGC())
 245                 goto argerr;
 246         gtk_init(NULL, NULL);
 247         if (!g_thread_supported())
 248                 g_thread_init(NULL);
 249         setup();
 250         setupx();
 251         if(uri)
 252                 loaduri(uri);
 253         else if(file)
 254                 loadfile(file);
 255         updatetitle();
 256         gtk_main();
 257         cleanup();
 258         return EXIT_SUCCESS;
 259 }