660413256f
When navigating history, the document-loaded signal isn't triggered and we can't directly get back the previous webview, so we have no other choice than to look it up everytime a new message is received.
123 lines
2.6 KiB
C
123 lines
2.6 KiB
C
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <limits.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <gio/gio.h>
|
|
#include <webkit2/webkit-web-extension.h>
|
|
#include <webkitdom/webkitdom.h>
|
|
#include <webkitdom/WebKitDOMDOMWindowUnstable.h>
|
|
|
|
#include "common.h"
|
|
|
|
#define LENGTH(x) (sizeof(x) / sizeof(x[0]))
|
|
|
|
typedef struct Page {
|
|
guint64 id;
|
|
WebKitWebPage *webpage;
|
|
struct Page *next;
|
|
} Page;
|
|
|
|
static int pipein, pipeout;
|
|
static Page *pages;
|
|
|
|
Page *
|
|
newpage(WebKitWebPage *page)
|
|
{
|
|
Page *p;
|
|
|
|
if (!(p = calloc(1, sizeof(Page))))
|
|
die("Cannot malloc!\n");
|
|
|
|
p->next = pages;
|
|
pages = p;
|
|
|
|
p->id = webkit_web_page_get_id(page);
|
|
p->webpage = page;
|
|
|
|
return p;
|
|
}
|
|
|
|
static void
|
|
msgsurf(Page *p, const char *s)
|
|
{
|
|
char msg[MSGBUFSZ];
|
|
int ret;
|
|
|
|
msg[0] = p ? p->id : 0;
|
|
ret = snprintf(&msg[1], sizeof(msg) - 1, "%s", s);
|
|
if (ret >= sizeof(msg)) {
|
|
fprintf(stderr, "webext: message too long: %d\n", ret);
|
|
return;
|
|
}
|
|
|
|
if (pipeout) {
|
|
if (write(pipeout, msg, sizeof(msg)) < 0)
|
|
fprintf(stderr, "webext: error sending: %s\n", msg);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
readpipe(GIOChannel *s, GIOCondition c, gpointer unused)
|
|
{
|
|
char msg[MSGBUFSZ];
|
|
gsize msgsz;
|
|
WebKitDOMDOMWindow *view;
|
|
GError *gerr = NULL;
|
|
glong wh, ww;
|
|
Page *p;
|
|
|
|
if (g_io_channel_read_chars(s, msg, LENGTH(msg), &msgsz, &gerr) !=
|
|
G_IO_STATUS_NORMAL) {
|
|
fprintf(stderr, "webext: error reading pipe: %s\n",
|
|
gerr->message);
|
|
g_error_free(gerr);
|
|
return TRUE;
|
|
}
|
|
msg[msgsz] = '\0';
|
|
|
|
for (p = pages; p; p = p->next) {
|
|
if (p->id == msg[0])
|
|
break;
|
|
}
|
|
if (!p || !(view = webkit_dom_document_get_default_view(
|
|
webkit_web_page_get_dom_document(p->webpage))))
|
|
return TRUE;
|
|
|
|
switch (msg[1]) {
|
|
case 'h':
|
|
ww = webkit_dom_dom_window_get_inner_width(view);
|
|
webkit_dom_dom_window_scroll_by(view,
|
|
(ww / 100) * msg[2], 0);
|
|
break;
|
|
case 'v':
|
|
wh = webkit_dom_dom_window_get_inner_height(view);
|
|
webkit_dom_dom_window_scroll_by(view,
|
|
0, (wh / 100) * msg[2]);
|
|
break;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
webpagecreated(WebKitWebExtension *e, WebKitWebPage *wp, gpointer unused)
|
|
{
|
|
Page *p = newpage(wp);
|
|
}
|
|
|
|
G_MODULE_EXPORT void
|
|
webkit_web_extension_initialize_with_user_data(WebKitWebExtension *e, GVariant *gv)
|
|
{
|
|
GIOChannel *gchanpipe;
|
|
|
|
g_signal_connect(e, "page-created", G_CALLBACK(webpagecreated), NULL);
|
|
|
|
g_variant_get(gv, "(ii)", &pipein, &pipeout);
|
|
msgsurf(NULL, "i");
|
|
|
|
gchanpipe = g_io_channel_unix_new(pipein);
|
|
g_io_channel_set_encoding(gchanpipe, NULL, NULL);
|
|
g_io_channel_set_close_on_unref(gchanpipe, TRUE);
|
|
g_io_add_watch(gchanpipe, G_IO_IN, readpipe, NULL);
|
|
}
|