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 loadstart(WebKitWebView *view, WebKitWebFrame *f, gpointer d);
  45 static void loadfinish(WebKitWebView *view, WebKitWebFrame *f, gpointer d);
  46 static void linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d);
  47 static gboolean newwindow(WebKitWebView *view, WebKitWebFrame *f,
  48                 WebKitNetworkRequest *r, WebKitWebNavigationAction *n,
  49                 WebKitWebPolicyDecision *p, gpointer d);
  50 static gboolean download(WebKitWebView *view, GObject *o, gpointer d);
  51 static void loaduri(gchar *uri);
  52 static void loadfile(gchar *f);
  53 static void setupx();
  54 GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event, gpointer data);
  55
  56 GdkFilterReturn
  57 processx(GdkXEvent *e, GdkEvent *event, gpointer data) {
  58         XPropertyEvent *ev;
  59         Atom adummy;
  60         int idummy;
  61         unsigned long ldummy;
  62         unsigned char *buf = NULL;
  63         if(((XEvent *)e)->type == PropertyNotify) {
  64                 ev = &((XEvent *)e)->xproperty;
  65                 if(ignore_once == FALSE && ev->atom == urlprop && ev->state == PropertyNewValue) {
  66                         XGetWindowProperty(dpy, ev->window, urlprop, 0L, BUFSIZ, False, XA_STRING,
  67                         &adummy, &idummy, &ldummy, &ldummy, &buf);
  68                         loaduri((gchar *)buf);
  69                         XFree(buf);
  70                         return GDK_FILTER_REMOVE;
  71                 }
  72                 ignore_once = FALSE;
  73         }
  74         return GDK_FILTER_CONTINUE;
  75 }
  76
  77 void
  78 setupx() {
  79         dpy = GDK_WINDOW_XDISPLAY(GTK_WIDGET(win)->window);
  80         urlprop = XInternAtom(dpy, "_SURF_URL", False);
  81         gdk_window_add_filter(GTK_WIDGET(win)->window, processx, NULL);
  82         gdk_window_set_events(GTK_WIDGET(win)->window, GDK_ALL_EVENTS_MASK);
  83 }
  84
  85 void
  86 loadfile(gchar *f) {
  87         GIOChannel *c = NULL;
  88         GError *e = NULL;
  89         GString *code = g_string_new("");
  90         gchar *line;
  91
  92         /* cannot use fileno in c99 - workaround*/
  93         if(strcmp(f, "-") == 0)
  94                 c = g_io_channel_unix_new(STDIN_FILENO);
  95         else
  96                 c = g_io_channel_new_file(f, "r", NULL);
  97         if (c) {
  98                 while(g_io_channel_read_line(c, &line, NULL, NULL, &e) == G_IO_STATUS_NORMAL) {
  99                         g_string_append(code, line);
 100                         g_free(line);
 101                 }
 102                 webkit_web_view_load_html_string(view, code->str, NULL);
 103                 g_io_channel_shutdown(c, FALSE, NULL);
 104         }
 105
 106 }
 107
 108 static void loaduri(gchar *uri) {
 109         GString* u = g_string_new(uri);
 110         if(g_strrstr(u->str, "://") == NULL)
 111                 g_string_prepend(u, "http://");
 112         webkit_web_view_load_uri(view, u->str);
 113         g_string_free(u, TRUE);
 114 }
 115
 116 gboolean
 117 download(WebKitWebView *view, GObject *o, gpointer d) {
 118         /* TODO */
 119         return FALSE;
 120 }
 121
 122 gboolean
 123 newwindow(WebKitWebView *view, WebKitWebFrame *f,
 124                 WebKitNetworkRequest *r, WebKitWebNavigationAction *n,
 125                 WebKitWebPolicyDecision *p, gpointer d) {
 126         /* TODO */
 127         return FALSE;
 128 }
 129 void
 130 linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d) {
 131         /* TODO */
 132 }
 133
 134 void
 135 loadstart(WebKitWebView *view, WebKitWebFrame *f, gpointer d) {
 136 }
 137
 138 void
 139 loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d) {
 140         gchar *uri;
 141
 142         if(!(uri = (gchar *)webkit_web_view_get_uri(view)))
 143                 uri = "(null)";
 144         ignore_once = TRUE;
 145         XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(win)->window), urlprop,
 146                         XA_STRING, 8, PropModeReplace, (unsigned char *)uri,
 147                         strlen(uri) + 1);
 148 }
 149
 150 void
 151 loadfinish(WebKitWebView *view, WebKitWebFrame *f, gpointer d) {
 152         /* ??? TODO */
 153 }
 154
 155 void
 156 progresschange(WebKitWebView* view, gint p, gpointer d) {
 157         progress = p;
 158         updatetitle();
 159 }
 160
 161 void
 162 updatetitle() {
 163         char t[512];
 164         if(progress == 100)
 165                 snprintf(t, LENGTH(t), "%s", title);
 166         else
 167                 snprintf(t, LENGTH(t), "%s [%i%%]", title, progress);
 168         gtk_window_set_title(GTK_WINDOW(win), t);
 169 }
 170
 171 void
 172 titlechange(WebKitWebView *v, WebKitWebFrame *f, const gchar *t, gpointer d) {
 173         if(title)
 174                 g_free(title);
 175         title = g_strdup(t);
 176         updatetitle();
 177 }
 178
 179 void
 180 windestroy(GtkWidget* w, gpointer d) {
 181         gtk_main_quit();
 182 }
 183
 184 gboolean
 185 keypress(GtkWidget* w, GdkEventKey *ev) {
 186         /* TODO */
 187         return FALSE;
 188 }
 189
 190 void setup(void) {
 191         if(embed) {
 192                 win = gtk_plug_new(0);
 193         }
 194         else {
 195                 win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 196                 gtk_window_set_wmclass(GTK_WINDOW(win), "surf", "surf");
 197         }
 198         gtk_window_set_default_size(GTK_WINDOW(win), 800, 600);
 199         browser = gtk_scrolled_window_new(NULL, NULL);
 200         g_signal_connect (G_OBJECT(win), "destroy", G_CALLBACK(windestroy), NULL);
 201         g_signal_connect (G_OBJECT(win), "key-press-event", G_CALLBACK(keypress), NULL);
 202
 203         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(browser),
 204                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 205         view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 206         gtk_container_add(GTK_CONTAINER(browser), GTK_WIDGET(view));
 207
 208         g_signal_connect(G_OBJECT(view), "title-changed", G_CALLBACK(titlechange), view);
 209         g_signal_connect(G_OBJECT(view), "load-progress-changed", G_CALLBACK(progresschange), view);
 210         g_signal_connect(G_OBJECT(view), "load-committed", G_CALLBACK(loadcommit), view);
 211         g_signal_connect(G_OBJECT(view), "load-started", G_CALLBACK(loadstart), view);
 212         g_signal_connect(G_OBJECT(view), "load-finished", G_CALLBACK(loadfinish), view);
 213         g_signal_connect(G_OBJECT(view), "hovering-over-link", G_CALLBACK(linkhover), view);
 214         g_signal_connect(G_OBJECT(view), "new-window-policy-decision-requested", G_CALLBACK(newwindow), view);
 215         g_signal_connect(G_OBJECT(view), "download-requested", G_CALLBACK(download), view);
 216         /* g_signal_connect(G_OBJECT(view), "create-web-view", G_CALLBACK(createwebview), view); */
 217
 218         gtk_container_add(GTK_CONTAINER(win), browser);
 219         gtk_widget_grab_focus(GTK_WIDGET(view));
 220         gtk_widget_show_all(win);
 221         if(showxid)
 222                 printf("%u\n", (unsigned int)GDK_WINDOW_XID(GTK_WIDGET(win)->window));
 223 }
 224
 225 void cleanup() {
 226 }
 227
 228 int main(int argc, char *argv[]) {
 229         gchar *uri = NULL, *file = NULL;
 230
 231         ARG {
 232         case 'x':
 233                 showxid = TRUE;
 234                 break;
 235         case 'e':
 236                 showxid = TRUE;
 237                 embed = TRUE;
 238                 break;
 239         case 'u':
 240                 if(!(uri = ARGVAL()))
 241                         goto argerr;
 242                 break;
 243         case 'f':
 244                 if(!(file = ARGVAL()))
 245                         goto argerr;
 246                 break;
 247         argerr:
 248         default:
 249                 puts("surf - simple browser");
 250                 printf("usage: %s [-e] [-u uri] [-f file]", argv[0]);
 251                 return EXIT_FAILURE;
 252         }
 253         if(argc != ARGC())
 254                 goto argerr;
 255         gtk_init(NULL, NULL);
 256         if (!g_thread_supported())
 257                 g_thread_init(NULL);
 258         setup();
 259         setupx();
 260         if(uri)
 261                 loaduri(uri);
 262         else if(file)
 263                 loadfile(file);
 264         updatetitle();
 265         gtk_main();
 266         cleanup();
 267         return EXIT_SUCCESS;
 268 }