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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_MESSAGE_PUMP_GLIB_X_H
#define BASE_MESSAGE_PUMP_GLIB_X_H
#include "base/message_pump.h"
#include "base/message_pump_glib.h"
#include <bitset>
#include <set>
#include <glib.h>
#include <gtk/gtk.h>
#include <X11/X.h>
namespace base {
class MessagePumpGlibX : public MessagePumpForUI {
public:
MessagePumpGlibX();
virtual ~MessagePumpGlibX();
// Indicates whether a GDK event was injected by chrome (when |true|) or if it
// was captured and being processed by GDK (when |false|).
bool IsDispatchingEvent(void) { return dispatching_event_; }
#if defined(HAVE_XINPUT2)
// Setup an X Window for XInput2 events.
void SetupXInput2ForXWindow(Window xid);
#endif
// Overridden from MessagePumpForUI:
virtual bool RunOnce(GMainContext* context, bool block);
private:
static void EventDispatcherX(GdkEvent* event, gpointer data);
// Update the lookup table and flag the events that should be captured and
// processed so that GDK doesn't get to them.
void InitializeEventsToCapture(void);
#if defined(HAVE_XINPUT2)
// Initialize X2 input.
void InitializeXInput2(void);
// The opcode used for checking events.
int xiopcode_;
// The list of pointer devices we care about. We maintain this list so that
// it is not necessary to query X for the list of devices for each
// GdkWindow created.
std::set<int> pointer_devices_;
#endif
// The event source for GDK events.
GSource* gdksource_;
// The default GDK event dispatcher. This is stored so that it can be restored
// when necessary during nested event dispatching.
gboolean (*gdkdispatcher_)(GSource*, GSourceFunc, void*);
// Indicates whether a GDK event was injected by chrome (when |true|) or if it
// was captured and being processed by GDK (when |false|).
bool dispatching_event_;
#if ! GTK_CHECK_VERSION(2,18,0)
// GDK_EVENT_LAST was introduced in GTK+ 2.18.0. For earlier versions, we pick a
// large enough value (the value of GDK_EVENT_LAST in 2.18.0) so that it works
// for all versions.
#define GDK_EVENT_LAST 37
#endif
// We do not want to process all the events ourselves. So we use a lookup
// table to quickly check if a particular event should be handled by us or if
// it should be passed on to the default GDK handler.
std::bitset<LASTEvent> capture_x_events_;
std::bitset<GDK_EVENT_LAST> capture_gdk_events_;
DISALLOW_COPY_AND_ASSIGN(MessagePumpGlibX);
};
} // namespace base
#endif // BASE_MESSAGE_PUMP_GLIB_X_H
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