Client: Implement primary-selection-unstable-v1

[ChangeLog][QPA plugin] Added support for middle mouse pasting through the
primary-selection-unstable-v1 protocol.

Fixes: QTBUG-66008
Change-Id: I7c8fb9aa2c856f5b6794aeab1ee75d80cad05dcd
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>

1 files changed, 25 insertions, 0 deletions

diff --git a/src/client/qwaylandinputdevice.cpp b/src/client/qwaylandinputdevice.cpp
index f0fd99563..8a580898d 100644
--- a/src/client/qwaylandinputdevice.cpp
+++ b/src/client/qwaylandinputdevice.cpp
@@ -47,6 +47,9 @@
 #include "qwaylanddatadevice_p.h"
 #include "qwaylanddatadevicemanager_p.h"
 #endif
+#if QT_CONFIG(wayland_client_primary_selection)
+#include "qwaylandprimaryselectionv1_p.h"
+#endif
 #include "qwaylandtouch_p.h"
 #include "qwaylandscreen_p.h"
 #include "qwaylandcursor_p.h"
@@ -363,6 +366,12 @@ QWaylandInputDevice::QWaylandInputDevice(QWaylandDisplay *display, int version,
     }
 #endif
 
+#if QT_CONFIG(wayland_client_primary_selection)
+    // TODO: Could probably decouple this more if there was a signal for new seat added
+    if (auto *psm = mQDisplay->primarySelectionManager())
+        setPrimarySelectionDevice(psm->createDevice(this));
+#endif
+
     if (mQDisplay->textInputManager())
         mTextInput.reset(new QWaylandTextInput(mQDisplay, mQDisplay->textInputManager()->get_text_input(wl_seat())));
 
@@ -446,6 +455,18 @@ QWaylandDataDevice *QWaylandInputDevice::dataDevice() const
 }
 #endif
 
+#if QT_CONFIG(wayland_client_primary_selection)
+void QWaylandInputDevice::setPrimarySelectionDevice(QWaylandPrimarySelectionDeviceV1 *primarySelectionDevice)
+{
+    mPrimarySelectionDevice.reset(primarySelectionDevice);
+}
+
+QWaylandPrimarySelectionDeviceV1 *QWaylandInputDevice::primarySelectionDevice() const
+{
+    return mPrimarySelectionDevice.data();
+}
+#endif
+
 void QWaylandInputDevice::setTextInput(QWaylandTextInput *textInput)
 {
     mTextInput.reset(textInput);
@@ -1190,6 +1211,10 @@ void QWaylandInputDevice::Keyboard::handleFocusLost()
     if (auto *dataDevice = mParent->dataDevice())
         dataDevice->invalidateSelectionOffer();
 #endif
+#if QT_CONFIG(wayland_client_primary_selection)
+    if (auto *device = mParent->primarySelectionDevice())
+        device->invalidateSelectionOffer();
+#endif
     mParent->mQDisplay->handleKeyboardFocusChanged(mParent);
     mRepeatTimer.stop();
 }