dev-qt/qtgui: Fix QClipboard behaviour on XCB

This fix is also in 5.6.3 and >=5.8.0.

See also:
https://bugreports.qt.io/browse/QTBUG-56972
https://bugs.kde.org/show_bug.cgi?id=348390

Package-Manager: Portage-2.3.5, Repoman-2.3.1

1 files changed, 39 insertions, 0 deletions

diff --git a/dev-qt/qtgui/files/qtgui-5.7.1-qclipboard.patch b/dev-qt/qtgui/files/qtgui-5.7.1-qclipboard.patch
new file mode 100644
index 000000000000..42ee58b611fe
--- /dev/null
+++ b/dev-qt/qtgui/files/qtgui-5.7.1-qclipboard.patch
@@ -0,0 +1,39 @@
+From 291eba6f8099a0fec8fbd9cf8a1fb67e5c9f4f8d Mon Sep 17 00:00:00 2001
+From: Palo Kisa <palo.kisa@gmail.com>
+Date: Mon, 7 Nov 2016 18:27:17 +0100
+Subject: QClipboard: Fix emitting changed() in XCB
+
+In XCB environment the QClipboard::changed() was not delivered if the
+QClipboard::clear() was issued by other Qt app/process.
+
+If the QClipboard::clear() is used, then the owner in
+xcb_xfixes_selection_notify_event_t is XCB_NONE, so we need make the
+decission to handle this event by the selection_timestamp and our
+m_timestamp[mode].
+
+Task-number: QTBUG-56972
+Change-Id: If4c486ac02223eac506465cac7ff1a07bd02a187
+Reviewed-by: Lars Knoll <lars.knoll@qt.io>
+---
+ src/plugins/platforms/xcb/qxcbclipboard.cpp | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/src/plugins/platforms/xcb/qxcbclipboard.cpp b/src/plugins/platforms/xcb/qxcbclipboard.cpp
+index d44ebae..40abef4 100644
+--- a/src/plugins/platforms/xcb/qxcbclipboard.cpp
++++ b/src/plugins/platforms/xcb/qxcbclipboard.cpp
+@@ -723,8 +723,10 @@ void QXcbClipboard::handleXFixesSelectionRequest(xcb_xfixes_selection_notify_eve
+     if (mode > QClipboard::Selection)
+         return;
+ 
+-    // here we care only about the xfixes events that come from non Qt processes
+-    if (event->owner != XCB_NONE && event->owner != owner()) {
++    // Note1: Here we care only about the xfixes events that come from other processes.
++    // Note2: If the QClipboard::clear() is issued, event->owner is XCB_NONE,
++    // so we check selection_timestamp to not handle our own QClipboard::clear().
++    if (event->owner != owner() && event->selection_timestamp > m_timestamp[mode]) {
+         if (!m_xClipboard[mode]) {
+             m_xClipboard[mode].reset(new QXcbClipboardMime(mode, this));
+         } else {
+-- 
+cgit v1.0-4-g1e03