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X11 Drag'n'drop: debug log of supported formats

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Thomas Bernard 2019-03-18 10:42:14 +01:00
parent 58bf9e73c1
commit d24dd3e1a9
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1 changed files with 48 additions and 1 deletions
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49
src/input.c
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@ -372,6 +372,7 @@ int Handle_mouse_btn_change(void)
/**
* Drag'n'Drop Protocol for X11 :
* https://freedesktop.org/wiki/Specifications/XDND/
* https://www.acc.umu.se/~vatten/XDND.html
*/
static int xdnd_version = 5;
static Window xdnd_source = None;
@ -394,10 +395,56 @@ static void Handle_ClientMessage(const XClientMessageEvent * xclient)
if (xclient->message_type == XInternAtom(X11_display, "XdndEnter", False))
{
// The ClientMessage only has space for three data types,
// so if the source supports more than this, the target must
// retrieve the property XdndTypeList from the source window
// in order to get the list of available types.
int i;
//int list = xclient->data.l[1] & 1;
xdnd_version = xclient->data.l[1] >> 24;
xdnd_source = xclient->data.l[0];
GFX2_Log(GFX2_DEBUG, "XdndEnter version=%d source=%lu\n", xdnd_version, xdnd_source);
GFX2_Log(GFX2_DEBUG, "XdndEnter version=%d source=%lu %s\n",
xdnd_version, xdnd_source, (xclient->data.l[1] & 1) ? "XdndTypeList" : "");
if (xclient->data.l[1] & 1)
{
int r;
unsigned long count = 0, bytesAfter = 0;
unsigned char * value = NULL;
Atom type = None;
int format = 0;
r = XGetWindowProperty(X11_display, xdnd_source,
XInternAtom(X11_display, "XdndTypeList", False),
0, LONG_MAX,
False, XA_ATOM, &type, &format, &count,
&bytesAfter, &value);
if (r == Success && value != NULL)
{
Atom * atoms = (Atom *)value;
for (i = 0; i < (int)count; i++)
{
char * atom_string = "None";
if (atoms[i] != None)
atom_string = XGetAtomName(X11_display, atoms[i]);
GFX2_Log(GFX2_DEBUG, " %lu %s\n", atoms[i], atom_string);
if (atoms[i] != None)
XFree(atom_string);
}
XFree(value);
}
}
else
{
for (i = 2; i < 5; i++)
{
char * atom_string = "None";
if (xclient->data.l[i] != None)
atom_string = XGetAtomName(X11_display, xclient->data.l[i]);
GFX2_Log(GFX2_DEBUG, " %lu %s\n", xclient->data.l[i], atom_string);
if (xclient->data.l[i] != None)
XFree(atom_string);
}
}
}
else if (xclient->message_type == XInternAtom(X11_display, "XdndLeave", False))
{