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~ Reorganized viewport detection for screens and added proper checks for XRandr extension

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Signed-off-by: Alexis Maiquez <almamu@almamu.com>
This commit is contained in:
Alexis Maiquez 2019-09-04 22:23:47 +02:00
parent be68fe209f
commit ce23ca53b1
1 changed files with 61 additions and 48 deletions
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109
main.cpp
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@ -25,6 +25,66 @@ irr::SIrrlichtCreationParameters _irr_params;
irr::f32 g_Time = 0;
void initialize_viewports ()
{
if (IsRootWindow == false || Screens.size () == 0)
return;
Display* display = XOpenDisplay (NULL);
int xrandr_result, xrandr_error;
if (!XRRQueryExtension (display, &xrandr_result, &xrandr_error))
{
std::cerr << "XRandr is not present, cannot detect specified screens, running in window mode" << std::endl;
return;
}
XRRScreenResources* screenResources = XRRGetScreenResources (display, DefaultRootWindow (display));
// there are some situations where xrandr returns null (like screen not using the extension)
if (screenResources == nullptr)
return;
for (int i = 0; i < screenResources->noutput; i ++)
{
XRROutputInfo* info = XRRGetOutputInfo (display, screenResources, screenResources->outputs [i]);
// there are some situations where xrandr returns null (like screen not using the extension)
if (info == nullptr)
continue;
std::vector<std::string>::iterator cur = Screens.begin ();
std::vector<std::string>::iterator end = Screens.end ();
for (; cur != end; cur ++)
{
if (info->connection == RR_Connected && strcmp (info->name, (*cur).c_str ()) == 0)
{
XRRCrtcInfo* crtc = XRRGetCrtcInfo (display, screenResources, info->crtc);
std::cout << "Found requested screen: " << info->name << " -> " << crtc->x << "x" << crtc->y << ":" << crtc->width << "x" << crtc->height << std::endl;
irr::core::rect<irr::s32> viewport;
viewport.UpperLeftCorner.X = crtc->x;
viewport.UpperLeftCorner.Y = crtc->y;
viewport.LowerRightCorner.X = crtc->x + crtc->width;
viewport.LowerRightCorner.Y = crtc->y + crtc->height;
Viewports.push_back (viewport);
XRRFreeCrtcInfo (crtc);
}
}
XRRFreeOutputInfo (info);
}
XRRFreeScreenResources (screenResources);
_irr_params.WindowId = reinterpret_cast<void*> (DefaultRootWindow (display));
}
int init_irrlicht()
{
// prepare basic configuration for irrlicht
@ -44,54 +104,7 @@ int init_irrlicht()
_irr_params.ZBufferBits = 24;
_irr_params.LoggingLevel = irr::ELL_DEBUG;
if (IsRootWindow == true)
{
Display* display = XOpenDisplay (NULL);
XRRScreenResources* screenResources = XRRGetScreenResources (display, DefaultRootWindow (display));
// there are some situations where xrandr returns null (like screen not using the extension)
if (screenResources != nullptr)
{
for (int i = 0; i < screenResources->noutput; i ++)
{
XRROutputInfo* info = XRRGetOutputInfo (display, screenResources, screenResources->outputs [i]);
// there are some situations where xrandr returns null (like screen not using the extension)
if (info == nullptr)
continue;
std::vector<std::string>::iterator cur = Screens.begin ();
std::vector<std::string>::iterator end = Screens.end ();
for (; cur != end; cur ++)
{
if (info->connection == RR_Connected && strcmp (info->name, (*cur).c_str ()) == 0)
{
XRRCrtcInfo* crtc = XRRGetCrtcInfo (display, screenResources, info->crtc);
std::cout << "Found requested screen: " << info->name << " -> " << crtc->x << "x" << crtc->y << ":" << crtc->width << "x" << crtc->height << std::endl;
irr::core::rect<irr::s32> viewport;
viewport.UpperLeftCorner.X = crtc->x;
viewport.UpperLeftCorner.Y = crtc->y;
viewport.LowerRightCorner.X = crtc->x + crtc->width;
viewport.LowerRightCorner.Y = crtc->y + crtc->height;
Viewports.push_back (viewport);
XRRFreeCrtcInfo (crtc);
}
}
XRRFreeOutputInfo (info);
}
XRRFreeScreenResources (screenResources);
}
_irr_params.WindowId = reinterpret_cast<void*> (DefaultRootWindow (display));
}
initialize_viewports ();
wp::irrlicht::device = irr::createDeviceEx (_irr_params);