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/* $Id: display.cpp $ */
/** @file
* X11 guest client - display management.
*/
/*
* Copyright (C) 2006-2012 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
/** @todo this should probably be replaced by something IPRT */
/* For system() and WEXITSTATUS() */
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
#include <X11/extensions/Xrandr.h>
#include <iprt/assert.h>
#include <iprt/err.h>
#include <iprt/file.h>
#include <iprt/string.h>
#include <iprt/thread.h>
#include <VBox/log.h>
#include <VBox/VMMDev.h>
#include <VBox/VBoxGuestLib.h>
#include "VBoxClient.h"
static int initDisplay(Display *pDisplay)
{
int rc = VINF_SUCCESS;
uint32_t fMouseFeatures = 0;
LogRelFlowFunc(("testing dynamic resizing\n"));
int iDummy;
if (!XRRQueryExtension(pDisplay, &iDummy, &iDummy))
rc = VERR_NOT_SUPPORTED;
if (RT_SUCCESS(rc))
rc = VbglR3CtlFilterMask(VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST, 0);
else
VbglR3CtlFilterMask(0, VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST);
/* Log and ignore the return value, as there is not much we can do with
* it. */
LogRelFlowFunc(("dynamic resizing: result %Rrc\n", rc));
/* Enable support for switching between hardware and software cursors */
LogRelFlowFunc(("enabling relative mouse re-capturing support\n"));
rc = VbglR3GetMouseStatus(&fMouseFeatures, NULL, NULL);
if (RT_SUCCESS(rc))
{
rc = VbglR3CtlFilterMask(VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED,
0);
if (RT_SUCCESS(rc))
rc = VbglR3SetMouseStatus
( fMouseFeatures
& ~VMMDEV_MOUSE_GUEST_NEEDS_HOST_CURSOR);
}
if (RT_FAILURE(rc))
{
VbglR3CtlFilterMask(0, VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED);
VbglR3SetMouseStatus( fMouseFeatures
| VMMDEV_MOUSE_GUEST_NEEDS_HOST_CURSOR);
}
LogRelFlowFunc(("mouse re-capturing support: result %Rrc\n", rc));
return VINF_SUCCESS;
}
void cleanupDisplay(void)
{
uint32_t fMouseFeatures = 0;
LogRelFlowFunc(("\n"));
VbglR3CtlFilterMask(0, VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST
| VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED);
int rc = VbglR3GetMouseStatus(&fMouseFeatures, NULL, NULL);
if (RT_SUCCESS(rc))
VbglR3SetMouseStatus( fMouseFeatures
| VMMDEV_MOUSE_GUEST_NEEDS_HOST_CURSOR);
LogRelFlowFunc(("returning\n"));
}
/** This thread just runs a dummy X11 event loop to be sure that we get
* terminated should the X server exit. */
static int x11ConnectionMonitor(RTTHREAD, void *)
{
XEvent ev;
Display *pDisplay = XOpenDisplay(NULL);
while (true)
XNextEvent(pDisplay, &ev);
return 0;
}
/**
* This method first resets the current resolution using RandR to wake up
* the graphics driver, then sets the resolution requested if it is among
* those offered by the driver.
*/
static void setSize(Display *pDisplay, uint32_t cx, uint32_t cy)
{
XRRScreenConfiguration *pConfig;
XRRScreenSize *pSizes;
int cSizes;
pConfig = XRRGetScreenInfo(pDisplay, DefaultRootWindow(pDisplay));
/* Reset the current mode */
LogRelFlowFunc(("Setting size %ux%u\n", cx, cy));
if (pConfig)
{
pSizes = XRRConfigSizes(pConfig, &cSizes);
unsigned uDist = UINT32_MAX;
int iMode = -1;
for (int i = 0; i < cSizes; ++i)
{
#define VBCL_SQUARE(x) (x) * (x)
unsigned uThisDist = VBCL_SQUARE(pSizes[i].width - cx)
+ VBCL_SQUARE(pSizes[i].height - cy);
LogRelFlowFunc(("Found size %dx%d, distance %u\n", pSizes[i].width,
pSizes[i].height, uThisDist));
#undef VBCL_SQUARE
if (uThisDist < uDist)
{
uDist = uThisDist;
iMode = i;
}
}
if (iMode >= 0)
{
Time config_timestamp = 0;
XRRConfigTimes(pConfig, &config_timestamp);
LogRelFlowFunc(("Setting new size %d\n", iMode));
XRRSetScreenConfig(pDisplay, pConfig,
DefaultRootWindow(pDisplay), iMode,
RR_Rotate_0, config_timestamp);
}
XRRFreeScreenConfigInfo(pConfig);
}
}
/**
* Display change request monitor thread function.
* Before entering the loop, we re-read the last request
* received, and if the first one received inside the
* loop is identical we ignore it, because it is probably
* stale.
*/
static int runDisplay(Display *pDisplay)
{
LogRelFlowFunc(("\n"));
Cursor hClockCursor = XCreateFontCursor(pDisplay, XC_watch);
Cursor hArrowCursor = XCreateFontCursor(pDisplay, XC_left_ptr);
int RRMaj, RRMin;
bool fExtDispReqSupport = true;
if (!XRRQueryVersion(pDisplay, &RRMaj, &RRMin))
RRMin = 0;
const char *pcszXrandr = "xrandr";
if (RTFileExists("/usr/X11/bin/xrandr"))
pcszXrandr = "/usr/X11/bin/xrandr";
int rc = RTThreadCreate(NULL, x11ConnectionMonitor, NULL, 0,
RTTHREADTYPE_INFREQUENT_POLLER, 0, "X11 monitor");
if (RT_FAILURE(rc))
return rc;
while (true)
{
uint32_t fEvents = 0, cx = 0, cy = 0, cBits = 0, iDisplay = 0, cxOrg = 0, cyOrg = 0;
bool fEnabled = false;
rc = VbglR3WaitEvent( VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST
| VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED,
RT_INDEFINITE_WAIT, &fEvents);
if (RT_FAILURE(rc) && rc != VERR_INTERRUPTED) /* VERR_NO_MEMORY? */
return rc;
/* Jiggle the mouse pointer to wake up the driver. */
XGrabPointer(pDisplay,
DefaultRootWindow(pDisplay), true, 0, GrabModeAsync,
GrabModeAsync, None, hClockCursor, CurrentTime);
XFlush(pDisplay);
XGrabPointer(pDisplay,
DefaultRootWindow(pDisplay), true, 0, GrabModeAsync,
GrabModeAsync, None, hArrowCursor, CurrentTime);
XFlush(pDisplay);
XUngrabPointer(pDisplay, CurrentTime);
XFlush(pDisplay);
/* And if it is a size hint, set the new size now that the video
* driver has had a chance to update its list. */
if (RT_SUCCESS(rc) && (fEvents & VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST))
{
int rc2 = VbglR3GetDisplayChangeRequestEx(&cx, &cy, &cBits,
&iDisplay, &cxOrg, &cyOrg, &fEnabled, true);
/* Extended display version not supported on host */
if (RT_FAILURE(rc2))
{
LogRel(("GetDisplayChangeReq Extended Version not supported. "
"Trying for Normal Mode with cx=%d & cy=%d\n", cx, cy));
fExtDispReqSupport = false;
rc2 = VbglR3GetDisplayChangeRequest(&cx, &cy, &cBits, &iDisplay, true);
}
else
LogRelFlowFunc(("Got Extended Param from Host cx=%d, cy=%d, bpp=%d, iDisp=%d, "
"OrgX=%d, OrgY=%d Enb=%d\n", cx, cy, cBits, iDisplay,
cxOrg, cyOrg, fEnabled));
/* If we are not stopping, sleep for a bit to avoid using up
too much CPU while retrying. */
if (RT_FAILURE(rc2))
RTThreadYield();
else
if (RRMin < 2)
setSize(pDisplay, cx, cy);
else
{
char szCommand[256];
if (fExtDispReqSupport)
{
if (fEnabled)
{
if (cx != 0 && cy != 0)
{
RTStrPrintf(szCommand, sizeof(szCommand),
"%s --output VBOX%u --set VBOX_MODE %dx%d",
pcszXrandr, iDisplay, cx, cy);
system(szCommand);
}
/* Extended Display support possible . Secondary monitor position supported */
if (cxOrg != 0 || cyOrg != 0)
{
RTStrPrintf(szCommand, sizeof(szCommand),
"%s --output VBOX%u --auto --pos %dx%d",
pcszXrandr, iDisplay, cxOrg, cyOrg);
system(szCommand);
}
RTStrPrintf(szCommand, sizeof(szCommand),
"%s --output VBOX%u --preferred",
pcszXrandr, iDisplay);
system(szCommand);
}
else /* disable the virtual monitor */
{
RTStrPrintf(szCommand, sizeof(szCommand),
"%s --output VBOX%u --off",
pcszXrandr, iDisplay);
system(szCommand);
}
}
else /* Extended display support not possible */
{
if (cx != 0 && cy != 0)
{
RTStrPrintf(szCommand, sizeof(szCommand),
"%s --output VBOX%u --set VBOX_MODE %dx%d",
pcszXrandr, iDisplay, cx, cy);
system(szCommand);
RTStrPrintf(szCommand, sizeof(szCommand),
"%s --output VBOX%u --preferred",
pcszXrandr, iDisplay);
system(szCommand);
}
}
}
}
}
return VINF_SUCCESS;
}
class DisplayService : public VBoxClient::Service
{
public:
virtual const char *getPidFilePath()
{
return ".vboxclient-display.pid";
}
virtual int run(bool fDaemonised /* = false */)
{
Display *pDisplay = XOpenDisplay(NULL);
if (!pDisplay)
return VERR_NOT_FOUND;
int rc = initDisplay(pDisplay);
if (RT_SUCCESS(rc))
rc = runDisplay(pDisplay);
XCloseDisplay(pDisplay);
return rc;
}
virtual void cleanup()
{
cleanupDisplay();
}
};
VBoxClient::Service *VBoxClient::GetDisplayService()
{
return new DisplayService;
}
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