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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifdef USE_RANDR
#include <X11/Xlib.h>
#include <X11/extensions/Xrandr.h>
#include <sal/log.hxx>
namespace
{
class RandRWrapper
{
bool m_bValid;
explicit RandRWrapper(Display*);
public:
static RandRWrapper& get(Display*);
static void releaseWrapper();
Bool XRRQueryExtension(Display* i_pDisp, int* o_event_base, int* o_error_base )
{
Bool bRet = False;
if( m_bValid )
bRet = ::XRRQueryExtension( i_pDisp, o_event_base, o_error_base );
return bRet;
}
XRRScreenConfiguration* XRRGetScreenInfo( Display* i_pDisp, Drawable i_aDrawable )
{
return m_bValid ? ::XRRGetScreenInfo( i_pDisp, i_aDrawable ) : nullptr;
}
void XRRFreeScreenConfigInfo( XRRScreenConfiguration* i_pConfig )
{
if( m_bValid )
::XRRFreeScreenConfigInfo( i_pConfig );
}
void XRRSelectInput( Display* i_pDisp, ::Window i_window, int i_nMask )
{
if( m_bValid )
::XRRSelectInput( i_pDisp, i_window, i_nMask );
}
int XRRUpdateConfiguration( XEvent* i_pEvent )
{
return m_bValid ? ::XRRUpdateConfiguration( i_pEvent ) : 0;
}
XRRScreenSize* XRRConfigSizes( XRRScreenConfiguration* i_pConfig, int* o_nSizes )
{
return m_bValid ? ::XRRConfigSizes( i_pConfig, o_nSizes ) : nullptr;
}
SizeID XRRConfigCurrentConfiguration( XRRScreenConfiguration* i_pConfig, Rotation* o_pRot )
{
return m_bValid ? ::XRRConfigCurrentConfiguration( i_pConfig, o_pRot ) : 0;
}
int XRRRootToScreen( Display *dpy, ::Window root )
{
return m_bValid ? ::XRRRootToScreen( dpy, root ) : -1;
}
};
RandRWrapper::RandRWrapper( Display* pDisplay ) :
m_bValid( true )
{
int nEventBase = 0, nErrorBase = 0;
if( !XRRQueryExtension( pDisplay, &nEventBase, &nErrorBase ) )
m_bValid = false;
}
RandRWrapper* pWrapper = nullptr;
RandRWrapper& RandRWrapper::get( Display* i_pDisplay )
{
if( ! pWrapper )
pWrapper = new RandRWrapper( i_pDisplay );
return *pWrapper;
}
void RandRWrapper::releaseWrapper()
{
delete pWrapper;
pWrapper = nullptr;
}
} // namespace
#endif
#include <unx/saldisp.hxx>
#if OSL_DEBUG_LEVEL > 1
#include <cstdio>
#endif
void SalDisplay::InitRandR( ::Window aRoot ) const
{
#ifdef USE_RANDR
RandRWrapper::get( GetDisplay() ).XRRSelectInput( GetDisplay(), aRoot, RRScreenChangeNotifyMask );
#else
(void)this;
(void)aRoot;
#endif
}
void SalDisplay::DeInitRandR()
{
#ifdef USE_RANDR
RandRWrapper::releaseWrapper();
#if OSL_DEBUG_LEVEL > 1
SAL_INFO("vcl.app", "SalDisplay::DeInitRandR().");
#endif
#endif
}
void SalDisplay::processRandREvent( XEvent* pEvent )
{
#ifdef USE_RANDR
XConfigureEvent* pCnfEvent=reinterpret_cast<XConfigureEvent*>(pEvent);
if( !pWrapper || pWrapper->XRRRootToScreen(GetDisplay(),pCnfEvent->window) == -1 )
return;
int nRet = pWrapper->XRRUpdateConfiguration( pEvent );
if( nRet != 1 || pEvent->type == ConfigureNotify) // this should then be a XRRScreenChangeNotifyEvent
return;
// update screens
bool bNotify = false;
for(ScreenData & rScreen : m_aScreens)
{
if( rScreen.m_bInit )
{
XRRScreenConfiguration *pConfig = nullptr;
XRRScreenSize *pSizes = nullptr;
int nSizes = 0;
Rotation nRot = 0;
SizeID nId = 0;
pConfig = pWrapper->XRRGetScreenInfo( GetDisplay(), rScreen.m_aRoot );
nId = pWrapper->XRRConfigCurrentConfiguration( pConfig, &nRot );
pSizes = pWrapper->XRRConfigSizes( pConfig, &nSizes );
XRRScreenSize *pTargetSize = pSizes + nId;
bNotify = bNotify ||
rScreen.m_aSize.Width() != pTargetSize->width ||
rScreen.m_aSize.Height() != pTargetSize->height;
rScreen.m_aSize = Size( pTargetSize->width, pTargetSize->height );
pWrapper->XRRFreeScreenConfigInfo( pConfig );
#if OSL_DEBUG_LEVEL > 1
SAL_INFO("vcl.app", "screen " << nId
<< " changed to size " << (int)pTargetSize->width
<< "x" << (int)pTargetSize->height);
#endif
}
}
if( bNotify )
emitDisplayChanged();
#else
(void)this;
(void)pEvent;
#endif
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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