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Added code to disable x11 dpms on startup and restore it on exit.

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This commit is contained in:
Kyzentun Keeslala
2016-01-05 16:28:14 -07:00
parent 55bd774a4c
commit d810b10d98
1 changed files with 37 additions and 0 deletions
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src/archutils/Unix/X11Helper.cpp
+37
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@@ -5,6 +5,8 @@
#include "Preference.h"
#include "PrefsManager.h" // XXX: only used for m_bShowMouseCursor -aj
#include <X11/extensions/dpms.h>
Display *X11Helper::Dpy = NULL;
Window X11Helper::Win = None;
@@ -13,6 +15,9 @@ static int FatalCallback( Display* );
static Preference<RString> g_XWMName( "XWMName", PRODUCT_ID );
static bool display_supports_dpms_extension= false;
static bool dpms_state_at_startup= false;
bool X11Helper::OpenXConnection()
{
DEBUG_ASSERT( Dpy == NULL && Win == None );
@@ -22,11 +27,43 @@ bool X11Helper::OpenXConnection()
XSetIOErrorHandler( FatalCallback );
XSetErrorHandler( ErrorCallback );
int event_base, error_base;
display_supports_dpms_extension= DPMSQueryExtension(Dpy, &event_base, &error_base);
if(display_supports_dpms_extension)
{
LOG->Trace("DPMSQueryExtension returned true. Stepmania will disable power management, and restore the original state on exit.");
CARD16 power_level;
BOOL state;
if(DPMSInfo(Dpy, &power_level, &state))
{
dpms_state_at_startup= state;
DPMSDisable(Dpy);
}
else
{
LOG->Trace("DPMSInfo returned false. Stepmania will not be able to disable power management.");
}
}
else
{
LOG->Trace("DPMSQueryExtension returned false, which means this display does not support the DPMS extension. Stepmania will not be able to disable power management.");
}
return true;
}
void X11Helper::CloseXConnection()
{
if(display_supports_dpms_extension)
{
if(dpms_state_at_startup)
{
DPMSEnable(Dpy);
}
else
{
DPMSDisable(Dpy);
}
}
// The window should have been shut down
DEBUG_ASSERT( Dpy != NULL );
DEBUG_ASSERT( Win == None );