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#include <errno.h>
#include <glib.h>
#include <wayland-client.h>
#include "wayland-source.h"
struct _WLSource {
GSource source;
struct wl_display *display;
gpointer fd;
int error;
};
static gboolean wl_source_prepare(GSource *source,
gint *timeout) {
WLSource *self = (WLSource *)source;
*timeout = 0;
if (wl_display_prepare_read(self->display) != 0)
return TRUE;
else if (wl_display_flush(self->display) < 0) {
self->error = errno;
return TRUE;
}
*timeout = -1;
return FALSE;
}
static gboolean wl_source_check(GSource *source) {
WLSource *self = (WLSource *)source;
if (self->error > 0)
return TRUE;
GIOCondition revents;
revents = g_source_query_unix_fd(source, self->fd);
if (revents & G_IO_IN) {
if (wl_display_read_events(self->display) < 0)
self->error = errno;
}
else
wl_display_cancel_read(self->display);
return revents > 0;
}
static gboolean wl_source_dispatch(GSource *source,
GSourceFunc callback,
gpointer user_data) {
WLSource *self = (WLSource *)source;
GIOCondition revents;
revents = g_source_query_unix_fd(source, self->fd);
if ((self->error > 0) || (revents & (G_IO_ERR | G_IO_HUP))) {
errno = self->error;
self->error = 0;
if ( callback != NULL )
return callback(user_data);
return G_SOURCE_REMOVE;
}
if (wl_display_dispatch_pending(self->display) < 0) {
if ( callback != NULL )
return callback(user_data);
return G_SOURCE_REMOVE;
}
return G_SOURCE_CONTINUE;
}
static void wl_source_finalize(GSource *source) {
WLSource *self = (WLSource *)source;
wl_display_disconnect(self->display);
}
static GSourceFuncs wl_source_funcs = {
.prepare = wl_source_prepare,
.check = wl_source_check,
.dispatch = wl_source_dispatch,
.finalize = wl_source_finalize,
};
WLSource* wl_source_new() {
struct wl_display *display;
WLSource *self;
GSource *source;
display = wl_display_connect(NULL);
if (display == NULL)
return NULL;
source = g_source_new(&wl_source_funcs, sizeof(WLSource));
self = (WLSource *)source;
self->display = display;
self->fd = g_source_add_unix_fd(source,
wl_display_get_fd(self->display),
G_IO_IN | G_IO_ERR | G_IO_HUP);
g_source_attach(source, NULL);
return self;
}
void wl_source_free(WLSource *self) {
GSource * source = (GSource *)self;
g_source_destroy(source);
g_source_unref(source);
}
struct wl_display* wl_source_get_display(WLSource *self) {
return self->display;
}
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