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Added experimental change which allow to use alt-tab and other shortcuts on linux when game is run in fullscreen mode.

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This method is used in many other projects and should work good. Currently modern games
use window manager fullscreen rather than grab whole mouse and keyboard.

Tested on Gnome, Unity and Openbox and it works well. Though it should be tested also on
other desktop environments.

Also performance impact should be tested.

I added simple workaround for Gnome, which sometimes creates fullscreen window smaller
than display.

If some problems will occur, feel free to revert it.
This commit is contained in:
Deve 2014-01-19 21:31:54 +01:00
parent ab3cb86359
commit dcfd55502c
1 changed files with 27 additions and 10 deletions
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37
lib/irrlicht/source/Irrlicht/CIrrDeviceLinux.cpp
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@ -663,8 +663,7 @@ bool CIrrDeviceLinux::createWindow()
if (!CreationParams.WindowId)
{
// create new Window
// Remove window manager decoration in fullscreen
attributes.override_redirect = CreationParams.Fullscreen;
attributes.override_redirect = false;
window = XCreateWindow(display,
RootWindow(display, visual->screen),
0, 0, Width, Height, 0, visual->depth,
@ -676,16 +675,34 @@ bool CIrrDeviceLinux::createWindow()
Atom wmDelete;
wmDelete = XInternAtom(display, wmDeleteWindow, True);
XSetWMProtocols(display, window, &wmDelete, 1);
if (CreationParams.Fullscreen)
{
XSetInputFocus(display, window, RevertToParent, CurrentTime);
int grabKb = XGrabKeyboard(display, window, True, GrabModeAsync,
GrabModeAsync, CurrentTime);
IrrPrintXGrabError(grabKb, "XGrabKeyboard");
int grabPointer = XGrabPointer(display, window, True, ButtonPressMask,
GrabModeAsync, GrabModeAsync, window, None, CurrentTime);
IrrPrintXGrabError(grabPointer, "XGrabPointer");
XWarpPointer(display, None, window, 0, 0, 0, 0, 0, 0);
// Workaround for Gnome which sometimes creates window smaller than display
XSizeHints *hints = XAllocSizeHints();
hints->flags=PMinSize;
hints->min_width=Width;
hints->min_height=Height;
XSetWMNormalHints(display, window, hints);
XFree(hints);
// Set the fullscreen mode via the window manager. This allows alt-tabing, volume hot keys & others.
// Get the needed atom from there freedesktop names
Atom WMStateAtom = XInternAtom(display, "_NET_WM_STATE", true);
Atom WMFullscreenAtom = XInternAtom(display, "_NET_WM_STATE_FULLSCREEN", true);
// Set the fullscreen property
XChangeProperty(display, window, WMStateAtom, XA_ATOM, 32, PropModeReplace, reinterpret_cast<unsigned char *>(& WMFullscreenAtom), 1);
// Notify the root window
XEvent xev = {0}; // The event should be filled with zeros before setting its attributes
xev.type = ClientMessage;
xev.xclient.window = window;
xev.xclient.message_type = WMStateAtom;
xev.xclient.format = 32;
xev.xclient.data.l[0] = 1;
xev.xclient.data.l[1] = WMFullscreenAtom;
XSendEvent(display, DefaultRootWindow(display), false, SubstructureRedirectMask | SubstructureNotifyMask, &xev);
}
}
else