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; |
-} |