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[client] clipboard: refactor for readabillity

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This commit is contained in:
Geoffrey McRae 2020-12-03 00:42:11 +11:00
parent 301ba45f0f
commit aaf449442a
1 changed files with 155 additions and 143 deletions
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140
client/clipboards/X11/src/x11.c
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@ -141,107 +141,93 @@ static void x11_cb_reply_fn(void * opaque, LG_ClipboardData type, uint8_t * data
free(s);
}
static void x11_cb_wmevent(SDL_SysWMmsg * msg)
{
XEvent e = msg->msg.x11.event;
if (e.type == SelectionRequest)
static void x11_cb_selection_request(const XSelectionRequestEvent e)
{
XEvent * s = (XEvent *)malloc(sizeof(XEvent));
s->xselection.type = SelectionNotify;
s->xselection.requestor = e.xselectionrequest.requestor;
s->xselection.selection = e.xselectionrequest.selection;
s->xselection.target = e.xselectionrequest.target;
s->xselection.property = e.xselectionrequest.property;
s->xselection.time = e.xselectionrequest.time;
s->xselection.requestor = e.requestor;
s->xselection.selection = e.selection;
s->xselection.target = e.target;
s->xselection.property = e.property;
s->xselection.time = e.time;
if (!this->requestFn)
{
s->xselection.property = None;
XSendEvent(this->display, e.xselectionrequest.requestor, 0, 0, s);
XFlush(this->display);
free(s);
return;
}
goto nodata;
// target list requested
if (e.xselectionrequest.target == this->aTargets)
if (e.target == this->aTargets)
{
Atom targets[2];
targets[0] = this->aTargets;
targets[1] = this->aTypes[this->type];
XChangeProperty(
e.xselectionrequest.display,
e.xselectionrequest.requestor,
e.xselectionrequest.property,
e.display,
e.requestor,
e.property,
XA_ATOM,
32,
PropModeReplace,
(unsigned char*)targets,
sizeof(targets) / sizeof(Atom));
XSendEvent(this->display, e.xselectionrequest.requestor, 0, 0, s);
XFlush(this->display);
free(s);
return;
goto send;
}
// look to see if we can satisfy the data type
for(int i = 0; i < LG_CLIPBOARD_DATA_NONE; ++i)
if (this->aTypes[i] == e.xselectionrequest.target && this->type == i)
if (this->aTypes[i] == e.target && this->type == i)
{
// request the data
this->requestFn(x11_cb_reply_fn, s);
return;
}
nodata:
// report no data
s->xselection.property = None;
XSendEvent(this->display, e.xselectionrequest.requestor, 0, 0, s);
send:
XSendEvent(this->display, e.requestor, 0, 0, s);
XFlush(this->display);
free(s);
}
if (e.type == SelectionClear && (
e.xselectionclear.selection == XA_PRIMARY ||
e.xselectionclear.selection == this->aSelection)
)
static void x11_cb_selection_clear(const XSelectionClearEvent e)
{
if (e.selection != XA_PRIMARY && e.selection != this->aSelection)
return;
this->aCurSelection = BadValue;
this->releaseFn();
return;
}
// if someone selected data
if (e.type == this->eventBase + XFixesSelectionNotify)
static void x11_cb_xfixes_selection_notify(const XFixesSelectionNotifyEvent e)
{
XFixesSelectionNotifyEvent * sne = (XFixesSelectionNotifyEvent *)&e;
// check if the selection is valid and it isn't ourself
if (
(sne->selection != XA_PRIMARY && sne->selection != this->aSelection) ||
sne->owner == this->window ||
sne->owner == 0
)
if ((e.selection != XA_PRIMARY && e.selection != this->aSelection) ||
e.owner == this->window || e.owner == 0)
{
return;
}
// remember which selection we are working with
this->aCurSelection = sne->selection;
this->aCurSelection = e.selection;
XConvertSelection(
this->display,
sne->selection,
e.selection,
this->aTargets,
this->aTargets,
this->window,
CurrentTime);
return;
}
if (e.type == SelectionNotify)
static void x11_cb_selection_notify(const XSelectionEvent e)
{
if (e.xselection.property == None)
if (e.property == None)
return;
Atom type;
@ -252,7 +238,7 @@ static void x11_cb_wmevent(SDL_SysWMmsg * msg)
XGetWindowProperty(
this->display,
this->window,
e.xselection.property,
e.property,
0, ~0L, // start and length
True , // delete the property
AnyPropertyType,
@ -262,18 +248,20 @@ static void x11_cb_wmevent(SDL_SysWMmsg * msg)
&after,
&data);
if (format == this->aIncr)
{
DEBUG_WARN("fixme: large paste buffers are not yet supported");
goto out;
}
// the target list
if (e.xselection.property == this->aTargets)
if (e.property == this->aTargets)
{
// the format is 32-bit and we must have data
// this is technically incorrect however as it's
// an array of padded 64-bit values
if (!data || format != 32)
{
if (data)
XFree(data);
return;
}
goto out;
// see if we support any of the targets listed
const uint64_t * targets = (const uint64_t *)data;
@ -282,37 +270,61 @@ static void x11_cb_wmevent(SDL_SysWMmsg * msg)
for(int n = 0; n < LG_CLIPBOARD_DATA_NONE; ++n)
if (this->aTypes[n] == targets[i])
{
DEBUG_INFO("%s", atomTypes[n]);
// we have a match, so send the notification
this->notifyFn(n);
XFree(data);
return;
goto out;
}
}
// no matches
this->notifyFn(LG_CLIPBOARD_DATA_NONE);
XFree(data);
return;
goto out;
}
if (format == this->aIncr)
if (e.property == this->aSelData)
{
DEBUG_WARN("fixme: large paste buffers are not yet supported");
XFree(data);
return;
}
for(int i = 0; i < LG_CLIPBOARD_DATA_NONE; ++i)
if (this->aTypes[i] == type)
{
this->dataFn(i, data, itemCount);
XFree(data);
return;
goto out;
}
DEBUG_WARN("clipboard data (%s) not in a supported format", XGetAtomName(this->display, type));
goto out;
}
out:
if (data)
XFree(data);
return;
}
static void x11_cb_wmevent(SDL_SysWMmsg * msg)
{
XEvent e = msg->msg.x11.event;
switch(e.type)
{
case SelectionRequest:
x11_cb_selection_request(e.xselectionrequest);
break;
case SelectionClear:
x11_cb_selection_clear(e.xselectionclear);
break;
case SelectionNotify:
x11_cb_selection_notify(e.xselection);
break;
default:
if (e.type == this->eventBase + XFixesSelectionNotify)
{
XFixesSelectionNotifyEvent * sne = (XFixesSelectionNotifyEvent *)&e;
x11_cb_xfixes_selection_notify(*sne);
}
break;
}
}