| Index: app/active_window_watcher_x.cc
|
| ===================================================================
|
| --- app/active_window_watcher_x.cc (revision 71854)
|
| +++ app/active_window_watcher_x.cc (working copy)
|
| @@ -1,102 +0,0 @@
|
| -// Copyright (c) 2009 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.
|
| -
|
| -#include <X11/Xlib.h>
|
| -#include <gdk/gdk.h>
|
| -#include <gdk/gdkx.h>
|
| -
|
| -#include "app/active_window_watcher_x.h"
|
| -
|
| -static Atom kNetActiveWindowAtom = None;
|
| -
|
| -// static
|
| -ActiveWindowWatcherX* ActiveWindowWatcherX::GetInstance() {
|
| - return Singleton<ActiveWindowWatcherX>::get();
|
| -}
|
| -
|
| -// static
|
| -void ActiveWindowWatcherX::AddObserver(Observer* observer) {
|
| - GetInstance()->observers_.AddObserver(observer);
|
| -}
|
| -
|
| -// static
|
| -void ActiveWindowWatcherX::RemoveObserver(Observer* observer) {
|
| - GetInstance()->observers_.RemoveObserver(observer);
|
| -}
|
| -
|
| -ActiveWindowWatcherX::ActiveWindowWatcherX() {
|
| - Init();
|
| -}
|
| -
|
| -ActiveWindowWatcherX::~ActiveWindowWatcherX() {
|
| -}
|
| -
|
| -void ActiveWindowWatcherX::Init() {
|
| - GdkAtom kNetActiveWindow = gdk_atom_intern("_NET_ACTIVE_WINDOW", FALSE);
|
| - kNetActiveWindowAtom = gdk_x11_atom_to_xatom_for_display(
|
| - gdk_screen_get_display(gdk_screen_get_default()), kNetActiveWindow);
|
| -
|
| - GdkWindow* root = gdk_get_default_root_window();
|
| -
|
| - // Set up X Event filter to listen for PropertyChange X events. These events
|
| - // tell us when the active window changes.
|
| - // Don't use XSelectInput directly here, as gdk internally seems to cache the
|
| - // mask and reapply XSelectInput after this, resetting any mask we set here.
|
| - gdk_window_set_events(root,
|
| - static_cast<GdkEventMask>(gdk_window_get_events(root) |
|
| - GDK_PROPERTY_CHANGE_MASK));
|
| - gdk_window_add_filter(NULL, &ActiveWindowWatcherX::OnWindowXEvent, this);
|
| -}
|
| -
|
| -void ActiveWindowWatcherX::NotifyActiveWindowChanged() {
|
| - // We don't use gdk_screen_get_active_window() because it caches
|
| - // whether or not the window manager supports _NET_ACTIVE_WINDOW.
|
| - // This causes problems at startup for chromiumos.
|
| - Atom type = None;
|
| - int format = 0; // size in bits of each item in 'property'
|
| - long unsigned int num_items = 0, remaining_bytes = 0;
|
| - unsigned char* property = NULL;
|
| -
|
| - XGetWindowProperty(gdk_x11_get_default_xdisplay(),
|
| - GDK_WINDOW_XID(gdk_get_default_root_window()),
|
| - kNetActiveWindowAtom,
|
| - 0, // offset into property data to read
|
| - 1, // length to get in 32-bit quantities
|
| - False, // deleted
|
| - AnyPropertyType,
|
| - &type,
|
| - &format,
|
| - &num_items,
|
| - &remaining_bytes,
|
| - &property);
|
| -
|
| - // Check that the property was set and contained a single 32-bit item (we
|
| - // don't check that remaining_bytes is 0, though, as XFCE's window manager
|
| - // seems to actually store two values in the property for some unknown
|
| - // reason.)
|
| - if (format == 32 && num_items == 1) {
|
| - int xid = *reinterpret_cast<int*>(property);
|
| - GdkWindow* active_window = gdk_window_lookup(xid);
|
| - FOR_EACH_OBSERVER(
|
| - Observer,
|
| - observers_,
|
| - ActiveWindowChanged(active_window));
|
| - }
|
| - if (property)
|
| - XFree(property);
|
| -}
|
| -
|
| -GdkFilterReturn ActiveWindowWatcherX::OnWindowXEvent(GdkXEvent* xevent,
|
| - GdkEvent* event, gpointer window_watcher) {
|
| - ActiveWindowWatcherX* watcher = reinterpret_cast<ActiveWindowWatcherX*>(
|
| - window_watcher);
|
| - XEvent* xev = static_cast<XEvent*>(xevent);
|
| -
|
| - if (xev->xany.type == PropertyNotify &&
|
| - xev->xproperty.atom == kNetActiveWindowAtom) {
|
| - watcher->NotifyActiveWindowChanged();
|
| - }
|
| -
|
| - return GDK_FILTER_CONTINUE;
|
| -}
|
|
|