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X11: Fixed SelectionRequest replies for target TARGETS.

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Fixes Google Chrome, etc, freezing up when SDL owns the clipboard selection
and actually sends thems the correct text for pasting. Confirmed working with
Unicode strings in UTF-8 format.

There were a few tweaks in this patch, but the specific fix is that
event.xselection.target in the SelectionNotify event we send back in reply
must be set to the same atom as the request ("TARGETS" in this case), and
we failed to do that in this special case. Things that don't ask for a target,
like the Gnome Terminal app, worked fine because they don't ask for TARGETS
and just go right to asking for a UTF8_STRING, and Mozilla apparently just
was more liberal in what they accepted in reply.

Chrome would reject our wrong reply and freeze up waiting for a valid one.
Someone should fix that in Chrome, too.  :)

Fixes Bugzilla #2926.
This commit is contained in:
Ryan C. Gordon 2015-06-04 15:41:39 -04:00
parent 96aef8cbca
commit 360d05bf72
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/video/x11/SDL_x11events.c
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@ -1189,6 +1189,7 @@ X11_DispatchEvent(_THIS)
sevent.xselection.property = None;
sevent.xselection.requestor = req->requestor;
sevent.xselection.time = req->time;
if (X11_XGetWindowProperty(display, DefaultRootWindow(display),
X11_GetSDLCutBufferClipboardType(display), 0, INT_MAX/4, False, req->target,
&sevent.xselection.target, &seln_format, &nbytes,
@ -1200,12 +1201,13 @@ X11_DispatchEvent(_THIS)
seln_data, nbytes);
sevent.xselection.property = req->property;
} else if (XA_TARGETS == req->target) {
Atom SupportedFormats[] = { sevent.xselection.target, XA_TARGETS };
Atom SupportedFormats[] = { XA_TARGETS, sevent.xselection.target };
X11_XChangeProperty(display, req->requestor, req->property,
XA_ATOM, 32, PropModeReplace,
(unsigned char*)SupportedFormats,
sizeof(SupportedFormats)/sizeof(*SupportedFormats));
SDL_arraysize(SupportedFormats));
sevent.xselection.property = req->property;
sevent.xselection.target = XA_TARGETS;
}
X11_XFree(seln_data);
}