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	tlibsurf-webext.c - surf - surf browser, a WebKit based browser
	git clone git://git.suckless.org/surf
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	tlibsurf-webext.c (2835B)
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	1 #include <sys/stat.h>
	2 #include <fcntl.h>
	3 #include <limits.h>
	4 #include <stdlib.h>
	5
	6 #include <gio/gio.h>
	7 #include <webkit2/webkit-web-extension.h>
	8 #include <webkitdom/webkitdom.h>
	9 #include <webkitdom/WebKitDOMDOMWindowUnstable.h>
	10
	11 #include "common.h"
	12
	13 #define LENGTH(x) (sizeof(x) / sizeof(x[0]))
	14
	15 typedef struct Page {
	16 guint64 id;
	17 WebKitWebPage *webpage;
	18 struct Page *next;
	19 } Page;
	20
	21 static int pipein, pipeout;
	22 static Page *pages;
	23
	24 Page *
	25 newpage(WebKitWebPage *page)
	26 {
	27 Page *p;
	28
	29 if (!(p = calloc(1, sizeof(Page))))
	30 die("Cannot malloc!\n");
	31
	32 p->next = pages;
	33 pages = p;
	34
	35 p->id = webkit_web_page_get_id(page);
	36 p->webpage = page;
	37
	38 return p;
	39 }
	40
	41 static void
	42 msgsurf(Page p, const char s)
	43 {
	44 static char msg[MSGBUFSZ];
	45 size_t sln = strlen(s);
	46 int ret;
	47
	48 if ((ret = snprintf(msg, sizeof(msg), "%c%c%s",
	49 2 + sln, p ? p->id : 0, s))
	50 >= sizeof(msg)) {
	51 fprintf(stderr, "webext: message too long: %d\n", ret);
	52 return;
	53 }
	54
	55 if (pipeout && write(pipeout, msg, sizeof(msg)) < 0)
	56 fprintf(stderr, "webext: error sending: %.*s\n", ret-2, …
	57 }
	58
	59 static gboolean
	60 readpipe(GIOChannel *s, GIOCondition c, gpointer unused)
	61 {
	62 static char msg[MSGBUFSZ], msgsz;
	63 WebKitDOMDOMWindow *view;
	64 GError *gerr = NULL;
	65 glong wh, ww;
	66 Page *p;
	67
	68 if (g_io_channel_read_chars(s, msg, LENGTH(msg), NULL, &gerr) !=
	69 G_IO_STATUS_NORMAL) {
	70 fprintf(stderr, "webext: error reading pipe: %s\n",
	71 gerr->message);
	72 g_error_free(gerr);
	73 return TRUE;
	74 }
	75 if ((msgsz = msg[0]) < 3) {
	76 fprintf(stderr, "webext: message too short: %d\n", msgsz…
	77 return TRUE;
	78 }
	79
	80 for (p = pages; p; p = p->next) {
	81 if (p->id == msg[1])
	82 break;
	83 }
	84 if (!p \|\| !(view = webkit_dom_document_get_default_view(
	85 webkit_web_page_get_dom_document(p->webpage))))
	86 return TRUE;
	87
	88 switch (msg[2]) {
	89 case 'h':
	90 if (msgsz != 4)
	91 return TRUE;
	92 ww = webkit_dom_dom_window_get_inner_width(view);
	93 webkit_dom_dom_window_scroll_by(view,
	94 (ww / 100) * msg[3], 0);
	95 break;
	96 case 'v':
	97 if (msgsz != 4)
	98 return TRUE;
	99 wh = webkit_dom_dom_window_get_inner_height(view);
	100 webkit_dom_dom_window_scroll_by(view,
	101 0, (wh / 100) * msg[3]);
	102 break;
	103 }
	104
	105 return TRUE;
	106 }
	107
	108 static void
	109 webpagecreated(WebKitWebExtension e, WebKitWebPage wp, gpointer unused)
	110 {
	111 Page *p = newpage(wp);
	112 }
	113
	114 G_MODULE_EXPORT void
	115 webkit_web_extension_initialize_with_user_data(WebKitWebExtension *e, GV…
	116 {
	117 GIOChannel *gchanpipe;
	118
	119 g_signal_connect(e, "page-created", G_CALLBACK(webpagecreated), …
	120
	121 g_variant_get(gv, "(ii)", &pipein, &pipeout);
	122 msgsurf(NULL, "i");
	123
	124 gchanpipe = g_io_channel_unix_new(pipein);
	125 g_io_channel_set_encoding(gchanpipe, NULL, NULL);
	126 g_io_channel_set_close_on_unref(gchanpipe, TRUE);
	127 g_io_add_watch(gchanpipe, G_IO_IN, readpipe, NULL);
	128 }