Revert "Client: Send release button event on pointer leave"

This reverts commit 8235fa65fe033a94e7a44322d3502f25940092ec.

It makes tests/manual/examples/widgets/draganddrop/puzzle not work,
which does drag and drop in same app.

Pick-to: 6.6 6.5 6.2 5.15
Fixes: QTBUG-115757
Task-number: QTBUG-97037
Change-Id: I738769fde96f7da91f5bc4dc7a70ed49596dcd61
Reviewed-by: Liang Qi <liang.qi@qt.io>

2 files changed, 2 insertions, 8 deletions

diff --git a/src/client/qwaylandinputdevice.cpp b/src/client/qwaylandinputdevice.cpp
index 4eba3c589..dc59a2376 100644
--- a/src/client/qwaylandinputdevice.cpp
+++ b/src/client/qwaylandinputdevice.cpp
@@ -719,8 +719,8 @@ public:
 
 void QWaylandInputDevice::Pointer::pointer_leave(uint32_t time, struct wl_surface *surface)
 {
-    releaseButtons();
     invalidateFocus();
+    mButtons = Qt::NoButton;
 
     mParent->mTime = time;
 
@@ -835,8 +835,6 @@ void QWaylandInputDevice::Pointer::pointer_button(uint32_t serial, uint32_t time
     default: return; // invalid button number (as far as Qt is concerned)
     }
 
-    mLastButton = qt_button;
-
     if (state)
         mButtons |= qt_button;
     else
@@ -875,13 +873,10 @@ void QWaylandInputDevice::Pointer::invalidateFocus()
 
 void QWaylandInputDevice::Pointer::releaseButtons()
 {
-    if (mButtons == Qt::NoButton)
-        return;
-
     mButtons = Qt::NoButton;
 
     if (auto *window = focusWindow()) {
-        ReleaseEvent e(focusWindow(), mParent->mTime, mSurfacePos, mGlobalPos, mButtons, mLastButton, mParent->modifiers());
+        ReleaseEvent e(focusWindow(), mParent->mTime, mSurfacePos, mGlobalPos, mButtons, Qt::NoButton, mParent->modifiers());
         window->handleMouse(mParent, e);
     }
 }
diff --git a/src/client/qwaylandinputdevice_p.h b/src/client/qwaylandinputdevice_p.h
index ea4b463c8..31ce50f68 100644
--- a/src/client/qwaylandinputdevice_p.h
+++ b/src/client/qwaylandinputdevice_p.h
@@ -336,7 +336,6 @@ public:
     QPointF mSurfacePos;
     QPointF mGlobalPos;
     Qt::MouseButtons mButtons = Qt::NoButton;
-    Qt::MouseButton mLastButton = Qt::NoButton;
 
     struct FrameData {
         QWaylandPointerEvent *event = nullptr;