/**
* Queries all the available modes in the display configuration.
*/
RRInfo() : _numSizes(0)
{
_conf = XRRGetScreenInfo(QX11Info::display(), QX11Info::appRootWindow());
if(!_conf) return; // Not available.
// Let's see which modes are available.
_sizes = XRRConfigSizes(_conf, &_numSizes);
for(int i = 0; i < _numSizes; ++i)
{
int numRates = 0;
short* rates = XRRConfigRates(_conf, i, &numRates);
for(int k = 0; k < numRates; k++)
{
DisplayMode mode;
de::zap(mode);
mode.width = _sizes[i].width;
mode.height = _sizes[i].height;
mode.depth = displayDepth;
mode.refreshRate = rates[k];
_modes.push_back(mode);
}
}
::Time prevConfTime;
_confTime = XRRConfigTimes(_conf, &prevConfTime);
}
/**
* 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);
}
}
static int xrandr_resize(int xsz, int ysz, int rate, int just_checking)
{
#ifdef HAVE_X11_EXTENSIONS_XRANDR_H
int event_base, error_base, ver_major, ver_minor, use_rate;
XRRScreenConfiguration *xrr_config = 0;
Status result = -1;
/* must check at runtime for the availability of the extension */
if(!XRRQueryExtension(fgDisplay.Display, &event_base, &error_base)) {
return -1;
}
XRRQueryVersion(fgDisplay.Display, &ver_major, &ver_minor);
/* we only heed the rate if we CAN actually use it (Xrandr >= 1.1) and
* the user actually cares about it (rate > 0)
*/
use_rate = ( rate > 0 ) && ( ( ver_major >= 1 ) ||
( ( ver_major == 1 ) && ( ver_minor >= 1 ) ) );
/* this loop is only so that the whole thing will be repeated if someone
* else changes video mode between our query of the current information and
* the attempt to change it.
*/
do {
XRRScreenSize *ssizes;
short *rates;
Rotation rot;
int i, ssizes_count, rates_count, curr, res_idx = -1;
Time timestamp, cfg_timestamp;
if(xrr_config) {
XRRFreeScreenConfigInfo(xrr_config);
}
if(!(xrr_config = XRRGetScreenInfo(fgDisplay.Display, fgDisplay.RootWindow))) {
fgWarning("XRRGetScreenInfo failed");
break;
}
ssizes = XRRConfigSizes(xrr_config, &ssizes_count);
curr = XRRConfigCurrentConfiguration(xrr_config, &rot);
timestamp = XRRConfigTimes(xrr_config, &cfg_timestamp);
/* if either of xsz or ysz are unspecified, use the current values */
if(xsz <= 0)
xsz = fgState.GameModeSize.X = ssizes[curr].width;
if(ysz <= 0)
ysz = fgState.GameModeSize.Y = ssizes[curr].height;
if(xsz == ssizes[curr].width && ysz == ssizes[curr].height) {
/* no need to switch, we're already in the requested resolution */
res_idx = curr;
} else {
for(i=0; i<ssizes_count; i++) {
if(ssizes[i].width == xsz && ssizes[i].height == ysz) {
res_idx = i;
break; /* found it */
}
}
}
if(res_idx == -1)
break; /* no matching resolution */
#if ( RANDR_MAJOR >= 1 ) || ( ( RANDR_MAJOR == 1 ) && ( RANDR_MINOR >= 1 ) )
if(use_rate) {
rate = fgState.GameModeRefresh;
/* for the selected resolution, let's find out if there is
* a matching refresh rate available.
*/
rates = XRRConfigRates(xrr_config, res_idx, &rates_count);
for(i=0; i<rates_count; i++) {
if(rates[i] == rate) {
break;
}
}
if(i == rates_count) {
break; /* no matching rate */
}
}
#endif
if(just_checking) {
result = 0;
break;
}
#if ( RANDR_MAJOR >= 1 ) || ( ( RANDR_MAJOR == 1 ) && ( RANDR_MINOR >= 1 ) )
if(use_rate)
result = XRRSetScreenConfigAndRate(fgDisplay.Display, xrr_config,
fgDisplay.RootWindow, res_idx, rot, rate, timestamp);
else
#endif
result = XRRSetScreenConfig(fgDisplay.Display, xrr_config,
fgDisplay.RootWindow, res_idx, rot, timestamp);
} while(result == RRSetConfigInvalidTime);
if(xrr_config) {
XRRFreeScreenConfigInfo(xrr_config);
}
if(result == 0) {
return 0;
}
#endif /* HAVE_X11_EXTENSIONS_XRANDR_H */
return -1;
}
