WaylandEventSource.cpp [plain text]
#include "config.h"
#include "WaylandEventSource.h"
#if PLATFORM(WAYLAND)
namespace WebCore {
class GLibSource {
public:
void initialize(struct wl_display*);
gboolean check();
gboolean dispatch();
private:
GSource m_source;
GPollFD m_pollFileDescriptor;
struct wl_display* m_display;
};
void GLibSource::initialize(struct wl_display* display)
{
m_display = display;
struct wl_event_loop* loop = wl_display_get_event_loop(display);
m_pollFileDescriptor.fd = wl_event_loop_get_fd(loop);
m_pollFileDescriptor.events = G_IO_IN | G_IO_ERR | G_IO_HUP;
g_source_add_poll(&m_source, &m_pollFileDescriptor);
g_source_set_name(&m_source, "Nested Wayland compositor display event source");
g_source_set_priority(&m_source, G_PRIORITY_DEFAULT);
g_source_set_can_recurse(&m_source, TRUE);
g_source_attach(&m_source, nullptr);
}
gboolean GLibSource::check()
{
return m_pollFileDescriptor.revents;
}
gboolean GLibSource::dispatch()
{
if (m_pollFileDescriptor.revents & G_IO_IN) {
struct wl_event_loop* loop = wl_display_get_event_loop(m_display);
wl_event_loop_dispatch(loop, -1);
wl_display_flush_clients(m_display);
m_pollFileDescriptor.revents = 0;
}
if (m_pollFileDescriptor.revents & (G_IO_ERR | G_IO_HUP))
g_warning("Wayland Display Event Source: lost connection to nested Wayland compositor");
return TRUE;
}
static gboolean prepareCallback(GSource*, gint* timeout)
{
*timeout = -1;
return FALSE;
}
static gboolean checkCallback(GSource* base)
{
auto source = reinterpret_cast<GLibSource*>(base);
return source->check();
}
static gboolean dispatchCallback(GSource* base, GSourceFunc, gpointer)
{
auto source = reinterpret_cast<GLibSource*>(base);
return source->dispatch();
}
static GSourceFuncs waylandGLibSourceFuncs = {
prepareCallback,
checkCallback,
dispatchCallback,
nullptr, nullptr, nullptr, };
GSource* WaylandEventSource::createDisplayEventSource(struct wl_display* display)
{
GSource* base = g_source_new(&waylandGLibSourceFuncs, sizeof(GLibSource));
auto source = reinterpret_cast<GLibSource*>(base);
source->initialize(display);
return base;
}
}
#endif // PLATFORM(WAYLAND)