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-rw-r--r--widget/gtk/nsIdleServiceGTK.cpp132
1 files changed, 132 insertions, 0 deletions
diff --git a/widget/gtk/nsIdleServiceGTK.cpp b/widget/gtk/nsIdleServiceGTK.cpp
new file mode 100644
index 000000000..6b6832c82
--- /dev/null
+++ b/widget/gtk/nsIdleServiceGTK.cpp
@@ -0,0 +1,132 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim:expandtab:shiftwidth=4:tabstop=4:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <gtk/gtk.h>
+
+#include "nsIdleServiceGTK.h"
+#include "nsIServiceManager.h"
+#include "nsDebug.h"
+#include "prlink.h"
+#include "mozilla/Logging.h"
+
+using mozilla::LogLevel;
+
+static PRLogModuleInfo* sIdleLog = nullptr;
+
+typedef bool (*_XScreenSaverQueryExtension_fn)(Display* dpy, int* event_base,
+ int* error_base);
+
+typedef XScreenSaverInfo* (*_XScreenSaverAllocInfo_fn)(void);
+
+typedef void (*_XScreenSaverQueryInfo_fn)(Display* dpy, Drawable drw,
+ XScreenSaverInfo *info);
+
+static bool sInitialized = false;
+static _XScreenSaverQueryExtension_fn _XSSQueryExtension = nullptr;
+static _XScreenSaverAllocInfo_fn _XSSAllocInfo = nullptr;
+static _XScreenSaverQueryInfo_fn _XSSQueryInfo = nullptr;
+
+NS_IMPL_ISUPPORTS_INHERITED0(nsIdleServiceGTK, nsIdleService)
+
+static void Initialize()
+{
+ if (!GDK_IS_X11_DISPLAY(gdk_display_get_default()))
+ return;
+
+ // This will leak - See comments in ~nsIdleServiceGTK().
+ PRLibrary* xsslib = PR_LoadLibrary("libXss.so.1");
+ if (!xsslib) // ouch.
+ {
+ MOZ_LOG(sIdleLog, LogLevel::Warning, ("Failed to find libXss.so!\n"));
+ return;
+ }
+
+ _XSSQueryExtension = (_XScreenSaverQueryExtension_fn)
+ PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryExtension");
+ _XSSAllocInfo = (_XScreenSaverAllocInfo_fn)
+ PR_FindFunctionSymbol(xsslib, "XScreenSaverAllocInfo");
+ _XSSQueryInfo = (_XScreenSaverQueryInfo_fn)
+ PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryInfo");
+
+ if (!_XSSQueryExtension)
+ MOZ_LOG(sIdleLog, LogLevel::Warning, ("Failed to get XSSQueryExtension!\n"));
+ if (!_XSSAllocInfo)
+ MOZ_LOG(sIdleLog, LogLevel::Warning, ("Failed to get XSSAllocInfo!\n"));
+ if (!_XSSQueryInfo)
+ MOZ_LOG(sIdleLog, LogLevel::Warning, ("Failed to get XSSQueryInfo!\n"));
+
+ sInitialized = true;
+}
+
+nsIdleServiceGTK::nsIdleServiceGTK()
+ : mXssInfo(nullptr)
+{
+ if (!sIdleLog)
+ sIdleLog = PR_NewLogModule("nsIIdleService");
+
+ Initialize();
+}
+
+nsIdleServiceGTK::~nsIdleServiceGTK()
+{
+ if (mXssInfo)
+ XFree(mXssInfo);
+
+// It is not safe to unload libXScrnSaver until each display is closed because
+// the library registers callbacks through XESetCloseDisplay (Bug 397607).
+// (Also the library and its functions are scoped for the file not the object.)
+#if 0
+ if (xsslib) {
+ PR_UnloadLibrary(xsslib);
+ xsslib = nullptr;
+ }
+#endif
+}
+
+bool
+nsIdleServiceGTK::PollIdleTime(uint32_t *aIdleTime)
+{
+ if (!sInitialized) {
+ // For some reason, we could not find xscreensaver.
+ return false;
+ }
+
+ // Ask xscreensaver about idle time:
+ *aIdleTime = 0;
+
+ // We might not have a display (cf. in xpcshell)
+ Display *dplay = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
+ if (!dplay) {
+ MOZ_LOG(sIdleLog, LogLevel::Warning, ("No display found!\n"));
+ return false;
+ }
+
+ if (!_XSSQueryExtension || !_XSSAllocInfo || !_XSSQueryInfo) {
+ return false;
+ }
+
+ int event_base, error_base;
+ if (_XSSQueryExtension(dplay, &event_base, &error_base))
+ {
+ if (!mXssInfo)
+ mXssInfo = _XSSAllocInfo();
+ if (!mXssInfo)
+ return false;
+ _XSSQueryInfo(dplay, GDK_ROOT_WINDOW(), mXssInfo);
+ *aIdleTime = mXssInfo->idle;
+ return true;
+ }
+ // If we get here, we couldn't get to XScreenSaver:
+ MOZ_LOG(sIdleLog, LogLevel::Warning, ("XSSQueryExtension returned false!\n"));
+ return false;
+}
+
+bool
+nsIdleServiceGTK::UsePollMode()
+{
+ return sInitialized;
+}