surf/surf.c

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/* See LICENSE file for copyright and license details.
*
* To understand surf, start reading main().
*/
#include <X11/X.h>
#include <X11/Xatom.h>
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#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include <gdk/gdk.h>
#include <gdk/gdkkeysyms.h>
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#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <webkit/webkit.h>
#define LENGTH(x) (sizeof x / sizeof x[0])
/* Plan9-style Argument parsing */
/* Vars: _c -> count; _b -> break; _a -> argument */
#define ARG int _c, _b; char *_a; \
for(_c = 1; _c < argc && argv[_c][0] == '-' && argv[_c][1] && \
(strcmp(argv[_c], "--") != 0); _c++) \
for(_a = &argv[_c][1], _b = 0; !_b && *_a; _a++ ) \
switch(*_a)
#define ARGVAL() (!_b && _a[1] && (_b = 1) ? &_a[1] : _c + 1 == argc ? \
0 : argv[++_c])
#define ARGCHR() (*_a)
#define ARGC() _c
Display *dpy;
Atom urlprop;
typedef struct Client {
GtkWidget *win;
GtkWidget *browser;
WebKitWebView *view;
gchar *title;
gint progress;
struct Client *next;
} Client;
Client *clients = NULL;
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gboolean embed = FALSE;
gboolean showxid = FALSE;
gboolean ignore_once = FALSE;
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static Client *newclient();
static void die(char *str);
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static void setup(void);
static void cleanup(void);
static void updatetitle(Client *c);
static void destroywin(GtkWidget* w, gpointer d);
static gboolean keypress(GtkWidget* w, GdkEventKey *ev, gpointer d);
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static void titlechange(WebKitWebView* view, WebKitWebFrame* frame, const gchar* title, gpointer d);
static void progresschange(WebKitWebView *view, gint p, gpointer d);
static void loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d);
static void linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d);
static void destroyclient(Client *c);
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static gboolean newwindow(WebKitWebView *view, WebKitWebFrame *f,
WebKitNetworkRequest *r, WebKitWebNavigationAction *n,
WebKitWebPolicyDecision *p, gpointer d);
static gboolean download(WebKitWebView *view, GObject *o, gpointer d);
static void loaduri(const Client *c, const gchar *uri);
static void loadfile(const Client *c, const gchar *f);
GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event, gpointer data);
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void
cleanup(void) {
while(clients)
destroyclient(clients);
}
GdkFilterReturn
processx(GdkXEvent *e, GdkEvent *event, gpointer d) {
XPropertyEvent *ev;
Client *c = (Client *)d;
Atom adummy;
int idummy;
unsigned long ldummy;
unsigned char *buf = NULL;
if(((XEvent *)e)->type == PropertyNotify) {
ev = &((XEvent *)e)->xproperty;
if(ignore_once == FALSE && ev->atom == urlprop && ev->state == PropertyNewValue) {
XGetWindowProperty(dpy, ev->window, urlprop, 0L, BUFSIZ, False, XA_STRING,
&adummy, &idummy, &ldummy, &ldummy, &buf);
loaduri(c, (gchar *)buf);
XFree(buf);
return GDK_FILTER_REMOVE;
}
ignore_once = FALSE;
}
return GDK_FILTER_CONTINUE;
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}
void
loadfile(const Client *c, const gchar *f) {
GIOChannel *chan = NULL;
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GError *e = NULL;
GString *code = g_string_new("");
GString *uri = g_string_new(f);
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gchar *line;
if(strcmp(f, "-") == 0) {
chan = g_io_channel_unix_new(STDIN_FILENO);
if (chan) {
while(g_io_channel_read_line(chan, &line, NULL, NULL, &e) == G_IO_STATUS_NORMAL) {
g_string_append(code, line);
g_free(line);
}
webkit_web_view_load_html_string(c->view, code->str, NULL);
g_io_channel_shutdown(chan, FALSE, NULL);
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}
}
else {
g_string_prepend(uri, "file://");
loaduri(c, uri->str);
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}
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}
static void loaduri(const Client *c, const gchar *uri) {
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GString* u = g_string_new(uri);
if(g_strrstr(u->str, ":") == NULL)
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g_string_prepend(u, "http://");
webkit_web_view_load_uri(c->view, u->str);
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g_string_free(u, TRUE);
}
gboolean
download(WebKitWebView *view, GObject *o, gpointer d) {
/* TODO */
return FALSE;
}
gboolean
newwindow(WebKitWebView *view, WebKitWebFrame *f,
WebKitNetworkRequest *r, WebKitWebNavigationAction *n,
WebKitWebPolicyDecision *p, gpointer d) {
puts("new");
Client *c = newclient();
webkit_web_view_load_request(c->view, r);
return TRUE;
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}
void
linkhover(WebKitWebView* page, const gchar* t, const gchar* l, gpointer d) {
Client *c = (Client *)d;
if(l)
gtk_window_set_title(GTK_WINDOW(c->win), l);
else
updatetitle(c);
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}
void
loadcommit(WebKitWebView *view, WebKitWebFrame *f, gpointer d) {
Client *c = (Client *)d;
gchar *uri;
if(!(uri = (gchar *)webkit_web_view_get_uri(view)))
uri = "(null)";
ignore_once = TRUE;
XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window), urlprop,
XA_STRING, 8, PropModeReplace, (unsigned char *)uri,
strlen(uri) + 1);
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}
void
progresschange(WebKitWebView* view, gint p, gpointer d) {
Client *c = (Client *)d;
c->progress = p;
updatetitle(c);
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}
void
updatetitle(Client *c) {
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char t[512];
if(c->progress == 100)
snprintf(t, LENGTH(t), "%s", c->title);
else
snprintf(t, LENGTH(t), "%s [%i%%]", c->title, c->progress);
gtk_window_set_title(GTK_WINDOW(c->win), t);
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}
void
titlechange(WebKitWebView *v, WebKitWebFrame *f, const gchar *t, gpointer d) {
Client *c = (Client *)d;
if(c->title)
g_free(c->title);
c->title = g_strdup(t);
updatetitle(c);
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}
void
destroywin(GtkWidget* w, gpointer d) {
Client *c = (Client *)d;
destroyclient(c);
}
void
destroyclient(Client *c) {
Client *p;
gtk_widget_destroy(c->win);
if(clients == c && c->next == NULL)
gtk_main_quit();
for(p = clients; p && p->next != c; p = p->next);
if(p)
p->next = c->next;
else
clients = c->next;
free(c);
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}
gboolean
keypress(GtkWidget* w, GdkEventKey *ev, gpointer d) {
Client *c = (Client *)d;
if(ev->type == GDK_KEY_PRESS && (ev->state == GDK_CONTROL_MASK
|| ev->state == (GDK_CONTROL_MASK | GDK_SHIFT_MASK))) {
switch(ev->keyval) {
case GDK_r:
case GDK_R:
if((ev->state & GDK_SHIFT_MASK))
webkit_web_view_reload_bypass_cache(c->view);
else
webkit_web_view_reload(c->view);
return TRUE;
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case GDK_g:
/* TODO */
return TRUE;
case GDK_slash:
/* TODO */
return TRUE;
case GDK_Left:
webkit_web_view_go_back(c->view);
return TRUE;
case GDK_Right:
webkit_web_view_go_forward(c->view);
return TRUE;
}
}
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return FALSE;
}
void setup(void) {
dpy = GDK_DISPLAY();
urlprop = XInternAtom(dpy, "_SURF_URL", False);
}
void die(char *str) {
fputs(str, stderr);
exit(EXIT_FAILURE);
}
Client *
newclient(void) {
Client *c;
if(!(c = calloc(1, sizeof(Client))))
die("Cannot malloc!\n");
if(embed) {
c->win = gtk_plug_new(0);
}
else {
c->win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_wmclass(GTK_WINDOW(c->win), "surf", "surf");
}
gtk_window_set_default_size(GTK_WINDOW(c->win), 800, 600);
c->browser = gtk_scrolled_window_new(NULL, NULL);
g_signal_connect (G_OBJECT(c->win), "destroy", G_CALLBACK(destroywin), c);
g_signal_connect (G_OBJECT(c->win), "key-press-event", G_CALLBACK(keypress), c);
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gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(c->browser),
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GTK_POLICY_NEVER, GTK_POLICY_NEVER);
c->view = WEBKIT_WEB_VIEW(webkit_web_view_new());
gtk_container_add(GTK_CONTAINER(c->browser), GTK_WIDGET(c->view));
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g_signal_connect(G_OBJECT(c->view), "title-changed", G_CALLBACK(titlechange), c);
g_signal_connect(G_OBJECT(c->view), "load-progress-changed", G_CALLBACK(progresschange), c);
g_signal_connect(G_OBJECT(c->view), "load-committed", G_CALLBACK(loadcommit), c);
g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(newwindow), c);
g_signal_connect(G_OBJECT(c->view), "download-requested", G_CALLBACK(download), c);
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gtk_container_add(GTK_CONTAINER(c->win), c->browser);
gtk_widget_grab_focus(GTK_WIDGET(c->view));
gtk_widget_show_all(c->win);
if(showxid)
printf("%u\n", (unsigned int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
c->next = clients;
clients = c;
gdk_window_set_events(GTK_WIDGET(c->win)->window, GDK_ALL_EVENTS_MASK);
gdk_window_add_filter(GTK_WIDGET(c->win)->window, processx, c);
return c;
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}
int main(int argc, char *argv[]) {
gchar *uri = NULL, *file = NULL;
Client *c;
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gtk_init(NULL, NULL);
if (!g_thread_supported())
g_thread_init(NULL);
setup();
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ARG {
case 'x':
showxid = TRUE;
break;
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case 'e':
showxid = TRUE;
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embed = TRUE;
break;
case 'u':
if(!(uri = ARGVAL()))
goto argerr;
c = newclient();
loaduri(c, uri);
updatetitle(c);
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break;
case 'f':
if(!(file = ARGVAL()))
goto argerr;
c = newclient();
loadfile(c, file);
updatetitle(c);
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break;
argerr:
default:
puts("surf - simple browser");
printf("usage: %s [-e] [-x] [-u uri] [-f file]\n", argv[0]);
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return EXIT_FAILURE;
}
if(argc != ARGC())
goto argerr;
if(!clients)
newclient();
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gtk_main();
cleanup();
return EXIT_SUCCESS;
}