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Implement X11 primary selection

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This commit is contained in:
Desour
2022-08-23 17:19:23 +02:00
committed by sfan5
parent 1967d71cfb
commit 53b9eaa831
5 changed files with 128 additions and 32 deletions
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94
source/Irrlicht/CIrrDeviceLinux.cpp
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@ -1000,12 +1000,15 @@ bool CIrrDeviceLinux::run()
send_response(req->property);
};
if (req->selection != X_ATOM_CLIPBOARD ||
if ((req->selection != X_ATOM_CLIPBOARD &&
req->selection != XA_PRIMARY) ||
req->owner != XWindow) {
// we are not the owner, refuse request
send_response_refuse();
break;
}
const core::stringc &text_buffer = req->selection == X_ATOM_CLIPBOARD ?
Clipboard : PrimarySelection;
// for debugging:
//~ {
@ -1026,8 +1029,8 @@ bool CIrrDeviceLinux::run()
req->target, X_ATOM_UTF8_STRING,
8, // format = 8-bit
PropModeReplace,
(unsigned char *)Clipboard.c_str(),
Clipboard.size());
(unsigned char *)text_buffer.c_str(),
text_buffer.size());
send_response(req->target);
break;
}
@ -1052,8 +1055,8 @@ bool CIrrDeviceLinux::run()
set_property_and_notify(
X_ATOM_UTF8_STRING,
8,
Clipboard.c_str(),
Clipboard.size()
text_buffer.c_str(),
text_buffer.size()
);
} else {
@ -1676,47 +1679,49 @@ void CIrrDeviceLinux::pollJoysticks()
}
#if defined(_IRR_COMPILE_WITH_X11_)
//! gets text from the clipboard
//! \return Returns 0 if no string is in there, otherwise utf-8 text.
const c8 *CIrrDeviceLinux::getTextFromClipboard() const
const c8 *CIrrDeviceLinux::getTextFromSelection(Atom selection, core::stringc &text_buffer) const
{
#if defined(_IRR_COMPILE_WITH_X11_)
Window ownerWindow = XGetSelectionOwner(XDisplay, X_ATOM_CLIPBOARD);
Window ownerWindow = XGetSelectionOwner(XDisplay, selection);
if (ownerWindow == XWindow) {
return Clipboard.c_str();
return text_buffer.c_str();
}
Clipboard = "";
text_buffer = "";
if (ownerWindow == None) {
return Clipboard.c_str();
return text_buffer.c_str();
}
// delete the property to be set beforehand
XDeleteProperty(XDisplay, XWindow, XA_PRIMARY);
XConvertSelection(XDisplay, X_ATOM_CLIPBOARD, X_ATOM_UTF8_STRING, XA_PRIMARY,
XConvertSelection(XDisplay, selection, X_ATOM_UTF8_STRING, XA_PRIMARY,
XWindow, CurrentTime);
XFlush(XDisplay);
// wait for event via a blocking call
XEvent event_ret;
std::pair<Window, Atom> args(XWindow, selection);
XIfEvent(XDisplay, &event_ret, [](Display *_display, XEvent *event, XPointer arg) {
auto p = reinterpret_cast<std::pair<Window, Atom> *>(arg);
return (Bool) (event->type == SelectionNotify &&
event->xselection.requestor == *(Window *)arg &&
event->xselection.selection == X_ATOM_CLIPBOARD &&
event->xselection.requestor == p->first &&
event->xselection.selection == p->second &&
event->xselection.target == X_ATOM_UTF8_STRING);
}, (XPointer)&XWindow);
}, (XPointer)&args);
_IRR_DEBUG_BREAK_IF(!(event_ret.type == SelectionNotify &&
event_ret.xselection.requestor == XWindow &&
event_ret.xselection.selection == X_ATOM_CLIPBOARD &&
event_ret.xselection.selection == selection &&
event_ret.xselection.target == X_ATOM_UTF8_STRING));
Atom property_set = event_ret.xselection.property;
if (event_ret.xselection.property == None) {
// request failed => empty string
return Clipboard.c_str();
return text_buffer.c_str();
}
// check for data
@ -1743,15 +1748,15 @@ const c8 *CIrrDeviceLinux::getTextFromClipboard() const
// for debugging:
//~ {
//~ char *type_name = XGetAtomName(XDisplay, type);
//~ fprintf(stderr, "CIrrDeviceLinux::getTextFromClipboard: actual type: %s (=%ld)\n",
//~ fprintf(stderr, "CIrrDeviceLinux::getTextFromSelection: actual type: %s (=%ld)\n",
//~ type_name, type);
//~ XFree(type_name);
//~ }
if (type != X_ATOM_UTF8_STRING && type != X_ATOM_UTF8_MIME_TYPE) {
os::Printer::log("CIrrDeviceLinux::getTextFromClipboard: did not get utf-8 string",
os::Printer::log("CIrrDeviceLinux::getTextFromSelection: did not get utf-8 string",
ELL_WARNING);
return Clipboard.c_str();
return text_buffer.c_str();
}
if (bytesLeft > 0) {
@ -1760,20 +1765,49 @@ const c8 *CIrrDeviceLinux::getTextFromClipboard() const
bytesLeft, 0, AnyPropertyType, &type, &format,
&numItems, &dummy, &data);
if (result == Success)
Clipboard = (irr::c8 *)data;
text_buffer = (irr::c8 *)data;
XFree (data);
}
// delete the property again, to inform the owner about the successful transfer
XDeleteProperty(XDisplay, XWindow, property_set);
return Clipboard.c_str();
return text_buffer.c_str();
}
#endif
//! gets text from the clipboard
//! \return Returns 0 if no string is in there, otherwise utf-8 text.
const c8 *CIrrDeviceLinux::getTextFromClipboard() const
{
#if defined(_IRR_COMPILE_WITH_X11_)
return getTextFromSelection(X_ATOM_CLIPBOARD, Clipboard);
#else
return nullptr;
#endif
}
//! gets text from the primary selection
//! \return Returns 0 if no string is in there, otherwise utf-8 text.
const c8 *CIrrDeviceLinux::getTextFromPrimarySelection() const
{
#if defined(_IRR_COMPILE_WITH_X11_)
return getTextFromSelection(XA_PRIMARY, PrimarySelection);
#else
return nullptr;
#endif
}
#if defined(_IRR_COMPILE_WITH_X11_)
bool CIrrDeviceLinux::becomeSelectionOwner(Atom selection) const
{
XSetSelectionOwner (XDisplay, selection, XWindow, CurrentTime);
XFlush (XDisplay);
Window owner = XGetSelectionOwner(XDisplay, selection);
return owner == XWindow;
}
#endif
//! copies text to the clipboard
void CIrrDeviceLinux::copyToClipboard(const c8 *text) const
{
@ -1781,15 +1815,23 @@ void CIrrDeviceLinux::copyToClipboard(const c8 *text) const
// Actually there is no clipboard on X but applications just say they own the clipboard and return text when asked.
// Which btw. also means that on X you lose clipboard content when closing applications.
Clipboard = text;
XSetSelectionOwner (XDisplay, X_ATOM_CLIPBOARD, XWindow, CurrentTime);
XFlush (XDisplay);
Window owner = XGetSelectionOwner(XDisplay, X_ATOM_CLIPBOARD);
if (owner != XWindow) {
if (!becomeSelectionOwner(X_ATOM_CLIPBOARD)) {
os::Printer::log("CIrrDeviceLinux::copyToClipboard: failed to set owner", ELL_WARNING);
}
#endif
}
//! copies text to the primary selection
void CIrrDeviceLinux::copyToPrimarySelection(const c8 *text) const
{
#if defined(_IRR_COMPILE_WITH_X11_)
PrimarySelection = text;
if (!becomeSelectionOwner(XA_PRIMARY)) {
os::Printer::log("CIrrDeviceLinux::copyToPrimarySelection: failed to set owner", ELL_WARNING);
}
#endif
}
#ifdef _IRR_COMPILE_WITH_X11_
// return true if the passed event has the type passed in parameter arg
Bool PredicateIsEventType(Display *display, XEvent *event, XPointer arg)