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Support clipboard actions in Content Browser and Scene tree on X11

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This commit is contained in:
Ari Vuollet
2025-06-23 17:06:06 +03:00
parent 6e79ffea34
commit ccb78103ec
1 changed files with 199 additions and 10 deletions
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209
Source/Engine/Platform/SDL/SDLPlatform.Linux.cpp
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@@ -407,6 +407,8 @@ namespace X11Impl
X11::Atom xAtomText;
X11::Atom xAtomString;
X11::Atom xAtomUTF8String;
X11::Atom xAtomFlaxRaw;
X11::Atom xAtomUriList;
X11::Atom xAtomXselData;
X11::Atom xDnDRequested = 0;
@@ -417,6 +419,8 @@ namespace X11Impl
int32 XFixesSelectionNotifyEvent = 0;
StringAnsi ClipboardText;
Array<byte> ClipboardData;
Array<StringAnsi> ClipboardFiles;
void ClipboardGetText(String& result, X11::Atom source, X11::Atom atom, X11::Window window)
{
@@ -447,11 +451,99 @@ namespace X11Impl
return;
if (event.xselection.property)
{
X11::XGetWindowProperty(event.xselection.display, event.xselection.requestor, event.xselection.property, 0L,(~0L), 0, AnyPropertyType, &target, &format, &size, &N,(unsigned char**)&data);
X11::XGetWindowProperty(event.xselection.display, event.xselection.requestor, event.xselection.property, 0L, (~0L), 0, AnyPropertyType, &target, &format, &size, &N, (unsigned char**)&data);
if (target == xAtomUTF8String || target == xAtomString)
{
// Got text to paste
result.Set(data , size);
result.Set(data, size);
X11::XFree(data);
}
X11::XDeleteProperty(event.xselection.display, event.xselection.requestor, event.xselection.property);
}
}
}
void ClipboardGetData(Array<byte>& result, X11::Atom source, X11::Atom atom, X11::Window window)
{
X11::Window selectionOwner = X11::XGetSelectionOwner(xDisplay, source);
if (selectionOwner == 0)
{
// No copy owner
return;
}
if (selectionOwner == window)
{
// Copy/paste from self
result.Set(ClipboardData.Get(), ClipboardData.Count());
return;
}
// Send event to get data from the owner
int format;
unsigned long N, size;
byte* data;
X11::Atom target;
X11::XEvent event;
X11::XConvertSelection(xDisplay, xAtomClipboard, atom, xAtomXselData, window, CurrentTime);
X11::XSync(xDisplay, 0);
if (X11::XCheckTypedEvent(xDisplay, SelectionNotify, &event))
{
if (event.xselection.selection != xAtomClipboard)
return;
if (event.xselection.property)
{
X11::XGetWindowProperty(event.xselection.display, event.xselection.requestor, event.xselection.property, 0L,(~0L), 0, AnyPropertyType, &target, &format, &size, &N, (byte**)&data);
if (target == atom)
{
result.Set(data, size);
X11::XFree(data);
}
X11::XDeleteProperty(event.xselection.display, event.xselection.requestor, event.xselection.property);
}
}
}
void ClipboardGetFiles(Array<String>& result, X11::Atom source, X11::Atom atom, X11::Window window)
{
X11::Window selectionOwner = X11::XGetSelectionOwner(xDisplay, source);
if (selectionOwner == 0)
{
// No copy owner
return;
}
if (selectionOwner == window)
{
// Copy/paste from self
result.Clear();
for (auto file : ClipboardFiles)
result.Add(String(file));
return;
}
// Send event to get data from the owner
int format;
unsigned long N, size;
char* data;
X11::Atom target;
X11::XEvent event;
X11::XConvertSelection(xDisplay, xAtomClipboard, atom, xAtomXselData, window, CurrentTime);
X11::XSync(xDisplay, 0);
if (X11::XCheckTypedEvent(xDisplay, SelectionNotify, &event))
{
if (event.xselection.selection != xAtomClipboard)
return;
if (event.xselection.property)
{
X11::XGetWindowProperty(event.xselection.display, event.xselection.requestor, event.xselection.property, 0L, (~0L), 0, AnyPropertyType, &target, &format, &size, &N, (unsigned char**)&data);
if (target == atom)
{
String filesString(StringAnsi(data, size));
filesString.Split('\n', result);
for (auto& file : result)
{
if (file.StartsWith(TEXT("file://")))
file = file.Substring(7);
file = file.TrimTrailing(); // Trim '\r'
}
X11::XFree(data);
}
X11::XDeleteProperty(event.xselection.display, event.xselection.requestor, event.xselection.property);
@@ -1105,24 +1197,69 @@ void SDLClipboard::SetText(const StringView& text)
if (X11Impl::xDisplay)
{
X11::Window window = (X11::Window)(mainWindow->GetNativePtr());
X11Impl::ClipboardText.Set(text.Get(), text.Length());
X11Impl::ClipboardData.Clear();
X11Impl::ClipboardFiles.Clear();
X11::Window window = (X11::Window)(mainWindow->GetNativePtr());
X11::XSetSelectionOwner(X11Impl::xDisplay, X11Impl::xAtomClipboard, window, CurrentTime); // CLIPBOARD
//X11::XSetSelectionOwner(xDisplay, xAtomPrimary, window, CurrentTime); // XA_PRIMARY
X11::XFlush(X11Impl::xDisplay);
X11::XGetSelectionOwner(X11Impl::xDisplay, X11Impl::xAtomClipboard);
//X11::XGetSelectionOwner(xDisplay, xAtomPrimary);
}
else
{
SDL_SetClipboardText(StringAnsi(text).GetText());
}
}
void SDLClipboard::SetRawData(const Span<byte>& data)
{
if (CommandLine::Options.Headless.IsTrue())
return;
auto mainWindow = Engine::MainWindow;
if (!mainWindow)
return;
if (X11Impl::xDisplay)
{
X11Impl::ClipboardData.Set(data.Get(), data.Length());
X11Impl::ClipboardText.Clear();
X11Impl::ClipboardFiles.Clear();
X11::Window window = (X11::Window)(mainWindow->GetNativePtr());
X11::XSetSelectionOwner(X11Impl::xDisplay, X11Impl::xAtomClipboard, window, CurrentTime); // CLIPBOARD
//X11::XSetSelectionOwner(xDisplay, xAtomPrimary, window, CurrentTime); // XA_PRIMARY
X11::XFlush(X11Impl::xDisplay);
}
else
{
}
}
void SDLClipboard::SetFiles(const Array<String>& files)
{
if (CommandLine::Options.Headless.IsTrue())
return;
auto mainWindow = Engine::MainWindow;
if (!mainWindow)
return;
if (X11Impl::xDisplay)
{
X11Impl::ClipboardFiles.Clear();
for (auto file : files)
X11Impl::ClipboardFiles.Add(StringAnsi(file));
X11Impl::ClipboardText.Clear();
X11Impl::ClipboardData.Clear();
X11::Window window = (X11::Window)(mainWindow->GetNativePtr());
X11::XSetSelectionOwner(X11Impl::xDisplay, X11Impl::xAtomClipboard, window, CurrentTime); // CLIPBOARD
//X11::XSetSelectionOwner(xDisplay, xAtomPrimary, window, CurrentTime); // XA_PRIMARY
X11::XFlush(X11Impl::xDisplay);
}
else
{
}
}
String SDLClipboard::GetText()
@@ -1136,7 +1273,6 @@ String SDLClipboard::GetText()
if (X11Impl::xDisplay)
{
X11::Window window = reinterpret_cast<X11::Window>(mainWindow->GetNativePtr());
X11Impl::ClipboardGetText(result, X11Impl::xAtomClipboard, X11Impl::xAtomUTF8String, window);
if (result.HasChars())
return result;
@@ -1157,12 +1293,42 @@ String SDLClipboard::GetText()
Array<byte> SDLClipboard::GetRawData()
{
return Array<byte>();
auto mainWindow = Engine::MainWindow;
if (!mainWindow)
return Array<byte>();
if (X11Impl::xDisplay)
{
X11::Window window = reinterpret_cast<X11::Window>(mainWindow->GetNativePtr());
Array<byte> array;
X11Impl::ClipboardGetData(array, X11Impl::xAtomClipboard, X11Impl::xAtomFlaxRaw, window);
return array;
}
else
{
return Array<byte>();
}
}
Array<String> SDLClipboard::GetFiles()
{
return Array<String>();
auto mainWindow = Engine::MainWindow;
if (!mainWindow)
return Array<String>();
if (X11Impl::xDisplay)
{
X11::Window window = reinterpret_cast<X11::Window>(mainWindow->GetNativePtr());
Array<String> array;
X11Impl::ClipboardGetFiles(array, X11Impl::xAtomClipboard, X11Impl::xAtomUriList, window);
if (array.Count() > 0)
return array;
return Array<String>();
}
else
{
return Array<String>();
}
}
bool SDLCALL SDLPlatform::X11EventHook(void* userdata, _XEvent* xevent)
@@ -1307,6 +1473,7 @@ bool SDLCALL SDLPlatform::X11EventHook(void* userdata, _XEvent* xevent)
}
else if (event.type == SelectionRequest)
{
// Clipboard request
if (event.xselectionrequest.selection != xAtomClipboard)
return false;
@@ -1323,15 +1490,35 @@ bool SDLCALL SDLPlatform::X11EventHook(void* userdata, _XEvent* xevent)
int result = 0;
if (ev.target == xAtomTargets)
{
// Request supported targets for clipboard content
Array<X11::Atom, FixedAllocation<2>> types(2);
types.Add(xAtomTargets);
types.Add(xAtomUTF8String);
if (X11Impl::ClipboardData.Count() > 0)
types.Add(xAtomFlaxRaw);
else if (X11Impl::ClipboardFiles.Count() > 0)
types.Add(xAtomUriList);
else
types.Add(xAtomUTF8String);
result = X11::XChangeProperty(xDisplay, ev.requestor, ev.property, xAtomAtom, 32, PropModeReplace, (unsigned char*)types.Get(), types.Count());
}
// Request target type
else if (ev.target == xAtomString || ev.target == xAtomText)
result = X11::XChangeProperty(xDisplay, ev.requestor, ev.property, xAtomString, 8, PropModeReplace, (unsigned char*)X11Impl::ClipboardText.Get(), X11Impl::ClipboardText.Length());
else if (ev.target == xAtomUTF8String)
result = X11::XChangeProperty(xDisplay, ev.requestor, ev.property, xAtomUTF8String, 8, PropModeReplace, (unsigned char*)X11Impl::ClipboardText.Get(), X11Impl::ClipboardText.Length());
else if (ev.target == xAtomFlaxRaw)
result = X11::XChangeProperty(xDisplay, ev.requestor, ev.property, xAtomFlaxRaw, 8, PropModeReplace, X11Impl::ClipboardData.Get(), X11Impl::ClipboardData.Count());
else if (ev.target == xAtomUriList)
{
StringAnsi fileString;
for (auto file : X11Impl::ClipboardFiles)
{
fileString.Append("file://");
fileString.Append(file);
fileString.Append("\n");
}
result = X11::XChangeProperty(xDisplay, ev.requestor, ev.property, xAtomUriList, 8, PropModeReplace, (unsigned char*)fileString.Get(), fileString.Length());
}
else
ev.property = 0;
if ((result & 2) == 0)
@@ -1413,6 +1600,8 @@ bool SDLPlatform::InitX11(void* display)
xAtomUTF8String = X11::XInternAtom(xDisplay, "UTF8_STRING", 1);
if (xAtomUTF8String == 0)
xAtomUTF8String = xAtomString;
xAtomFlaxRaw = X11::XInternAtom(xDisplay, "flaxengine/raw", 0);
xAtomUriList = X11::XInternAtom(xDisplay, "text/uri-list", 0);
xAtomXselData = X11::XInternAtom(xDisplay, "XSEL_DATA", 0);
// We need to override handling of the XFixes selection tracking events from SDL