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X11: Fixed SDL_GetGlobalMouseState() to work better with multimonitor configs.

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Fixes Bugzilla #2770.

Thanks to Epic Games for contributing this fix.
This commit is contained in:
Dmitry Rekman 2014-10-29 22:55:40 -04:00
parent 37720dd5f2
commit 3a916c6d7b
1 changed files with 8 additions and 2 deletions
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10
src/video/x11/SDL_x11mouse.c
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@ -382,8 +382,14 @@ X11_GetGlobalMouseState(int *x, int *y)
retval |= (mask & Button1Mask) ? SDL_BUTTON_LMASK : 0; retval |= (mask & Button1Mask) ? SDL_BUTTON_LMASK : 0;
retval |= (mask & Button2Mask) ? SDL_BUTTON_MMASK : 0; retval |= (mask & Button2Mask) ? SDL_BUTTON_MMASK : 0;
retval |= (mask & Button3Mask) ? SDL_BUTTON_RMASK : 0; retval |= (mask & Button3Mask) ? SDL_BUTTON_RMASK : 0;
*x = data->x + rootx; /* SDL_DisplayData->x,y point to screen origin, and adding them to mouse coordinates relative to root window doesn't do the right thing
*y = data->y + rooty; * (observed on dual monitor setup with primary display being the rightmost one - mouse was offset to the right).
*
* Adding root position to root-relative coordinates seems to be a better way to get absolute position. */
XWindowAttributes root_attrs;
X11_XGetWindowAttributes(display, root, &root_attrs);
*x = root_attrs.x + rootx;
*y = root_attrs.y + rooty;
return retval; return retval;
} }
} }