Deduplicate XAutoLock inhibition and move to ScreenSaverInhibitor

(Successfully tested with xautolock 2.2)

Change-Id: I55a3703322dd6792689ff3c3e85b27840ee2bc55

3 files changed, 58 insertions, 106 deletions

diff --git a/vcl/unx/generic/window/salframe.cxx b/vcl/unx/generic/window/salframe.cxx
index c5881a173685..331f82af845d 100644
--- a/vcl/unx/generic/window/salframe.cxx
+++ b/vcl/unx/generic/window/salframe.cxx
@@ -2189,87 +2189,15 @@ void X11SalFrame::ShowFullScreen( bool bFullScreen, sal_Int32 nScreen )
     }
 }
 
-/* ---------------------------------------------------------------------
-   the xautolock pseudo screen saver needs special treatment since it
-   doesn't cooperate with XxxxScreenSaver settings
-   ------------------------------------------------------------------- */
-
-static Bool
-IsRunningXAutoLock( Display *p_display, ::Window a_window )
-{
-    const char *p_atomname = "XAUTOLOCK_SEMAPHORE_PID";
-    Atom        a_pidatom;
-
-    // xautolock interns this atom
-    a_pidatom    = XInternAtom( p_display, p_atomname, True );
-    if ( a_pidatom == None )
-        return False;
-
-    Atom          a_type;
-    int           n_format;
-    unsigned long n_items;
-    unsigned long n_bytes_after;
-    pid_t        *p_pid;
-    pid_t         n_pid;
-    // get pid of running xautolock
-    XGetWindowProperty (p_display, a_window, a_pidatom, 0L, 2L, False,
-            AnyPropertyType, &a_type, &n_format, &n_items, &n_bytes_after,
-            reinterpret_cast<unsigned char**>(&p_pid) );
-    n_pid = *p_pid;
-    XFree( p_pid );
-
-      if ( a_type == XA_INTEGER )
-      {
-        // check if xautolock pid points to a running process
-        if ( kill(n_pid, 0) == -1 )
-            return False;
-        else
-            return True;
-    }
-
-    return False;
-}
-
-/* definitions from xautolock.c (pl15) */
-#define XAUTOLOCK_DISABLE 1
-#define XAUTOLOCK_ENABLE  2
-
-static Bool
-MessageToXAutoLock( Display *p_display, int n_message )
-{
-    const char *p_atomname = "XAUTOLOCK_MESSAGE" ;
-    Atom        a_messageatom;
-    ::Window    a_rootwindow;
-
-    a_rootwindow = RootWindowOfScreen( ScreenOfDisplay(p_display, 0) );
-    if ( ! IsRunningXAutoLock(p_display, a_rootwindow) )
-    {
-        // remove any pending messages
-        a_messageatom = XInternAtom( p_display, p_atomname, True );
-        if ( a_messageatom != None )
-            XDeleteProperty( p_display, a_rootwindow, a_messageatom );
-        return False;
-    }
-
-    a_messageatom = XInternAtom( p_display, p_atomname, False );
-    XChangeProperty (p_display, a_rootwindow, a_messageatom, XA_INTEGER,
-            8, PropModeReplace, reinterpret_cast<unsigned char*>(&n_message), sizeof(n_message) );
-
-    return True;
-}
-
 void X11SalFrame::StartPresentation( bool bStart )
 {
     maScreenSaverInhibitor.inhibit( bStart,
                                     "presentation",
                                     true, // isX11
-                                    mhWindow );
+                                    mhWindow,
+                                    GetXDisplay() );
 
     vcl::I18NStatus::get().show( !bStart, vcl::I18NStatus::presentation );
-    if ( bStart )
-        MessageToXAutoLock( GetXDisplay(), XAUTOLOCK_DISABLE );
-    else
-        MessageToXAutoLock( GetXDisplay(), XAUTOLOCK_ENABLE );
 
     if( ! bStart && hPresentationWindow != None )
         doReparentPresentationDialogues( GetDisplay() );
diff --git a/vcl/unx/generic/window/screensaverinhibitor.cxx b/vcl/unx/generic/window/screensaverinhibitor.cxx
index b352c1d2e862..0636b06b68fe 100644
--- a/vcl/unx/generic/window/screensaverinhibitor.cxx
+++ b/vcl/unx/generic/window/screensaverinhibitor.cxx
@@ -10,6 +10,11 @@
 #include <generic/gensys.h>
 #include <unx/screensaverinhibitor.hxx>
 
+#include <prex.h>
+#include <X11/Xatom.h>
+#include <X11/Xlib.h>
+#include <postx.h>
+
 #ifdef ENABLE_DBUS
 #include <dbus/dbus-glib.h>
 
@@ -24,16 +29,25 @@
 
 #include <sal/log.hxx>
 
-void ScreenSaverInhibitor::inhibit( bool bInhibit, const OUString& sReason, bool bIsX11, const boost::optional<guint> xid )
+void ScreenSaverInhibitor::inhibit( bool bInhibit, const OUString& sReason,
+                                    bool bIsX11, const boost::optional<guint> xid, boost::optional<Display*> pDisplay )
 {
     const gchar* appname = SalGenericSystem::getFrameClassName();
     const OString aReason = OUStringToOString( sReason, RTL_TEXTENCODING_UTF8 );
 
     inhibitFDO( bInhibit, appname, aReason.getStr() );
 
-    if ( bIsX11 && ( xid != boost::none ) )
+    if ( bIsX11 )
     {
-        inhibitGSM( bInhibit, appname, aReason.getStr(), xid.get() );
+        if ( pDisplay != boost::none )
+        {
+            inhibitXAutoLock( bInhibit, pDisplay.get() );
+        }
+
+        if ( xid != boost::none )
+        {
+            inhibitGSM( bInhibit, appname, aReason.getStr(), xid.get() );
+        }
     }
 }
 
@@ -154,4 +168,33 @@ void ScreenSaverInhibitor::inhibitGSM( bool bInhibit, const gchar* appname, cons
                  mnGSMCookie );
 }
 
+/* definitions from xautolock.c (pl15) */
+#define XAUTOLOCK_DISABLE 1
+#define XAUTOLOCK_ENABLE  2
+
+void ScreenSaverInhibitor::inhibitXAutoLock( bool bInhibit, Display* pDisplay )
+{
+    ::Window aRootWindow = RootWindowOfScreen( ScreenOfDisplay( pDisplay, 0 ) );
+
+    Atom nAtom = XInternAtom( pDisplay,
+                              "XAUTOLOCK_MESSAGE",
+                              False );
+
+    if ( nAtom == None )
+    {
+        return;
+    }
+
+    int nMessage = bInhibit ? XAUTOLOCK_DISABLE : XAUTOLOCK_ENABLE;
+
+    XChangeProperty( pDisplay,
+                     aRootWindow,
+                     nAtom,
+                     XA_INTEGER,
+                     8, // format -- 8 bit quantity
+                     PropModeReplace,
+                     reinterpret_cast<unsigned char*>( &nMessage ),
+                     sizeof( nMessage ) );
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/unx/gtk/window/gtksalframe.cxx b/vcl/unx/gtk/window/gtksalframe.cxx
index 4d74e67ac15c..498161e60d24 100644
--- a/vcl/unx/gtk/window/gtksalframe.cxx
+++ b/vcl/unx/gtk/window/gtksalframe.cxx
@@ -2538,40 +2538,21 @@ void GtkSalFrame::ShowFullScreen( bool bFullScreen, sal_Int32 nScreen )
     }
 }
 
-/* definitions from xautolock.c (pl15) */
-#define XAUTOLOCK_DISABLE 1
-#define XAUTOLOCK_ENABLE  2
-
-void GtkSalFrame::setAutoLock( bool bLock )
-{
-    if( isChild() || !getDisplay()->IsX11Display() )
-        return;
-
-    GdkScreen  *pScreen = gtk_window_get_screen( GTK_WINDOW(m_pWindow) );
-    GdkDisplay *pDisplay = gdk_screen_get_display( pScreen );
-    GdkWindow  *pRootWin = gdk_screen_get_root_window( pScreen );
-
-    Atom nAtom = XInternAtom( GDK_DISPLAY_XDISPLAY( pDisplay ),
-                              "XAUTOLOCK_MESSAGE", False );
-
-    int nMessage = bLock ? XAUTOLOCK_ENABLE : XAUTOLOCK_DISABLE;
-
-    XChangeProperty( GDK_DISPLAY_XDISPLAY( pDisplay ),
-                     GDK_WINDOW_XID( pRootWin ),
-                     nAtom, XA_INTEGER,
-                     8, PropModeReplace,
-                     reinterpret_cast<unsigned char*>(&nMessage),
-                     sizeof( nMessage ) );
-}
-
 void GtkSalFrame::StartPresentation( bool bStart )
 {
+    boost::optional<guint> aWindow;
+    boost::optional<Display*> aDisplay;
+    if( getDisplay()->IsX11Display() )
+    {
+        aWindow = widget_get_xid(m_pWindow);
+        aDisplay = GDK_DISPLAY_XDISPLAY( getGdkDisplay() );
+    }
+
     m_ScreenSaverInhibitor.inhibit( bStart,
                                     "presentation",
                                     getDisplay()->IsX11Display(),
-                                    widget_get_xid(m_pWindow) );
-
-    setAutoLock( !bStart );
+                                    aWindow,
+                                    aDisplay );
 
     if( !getDisplay()->IsX11Display() )
         return;