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authorLiang Qi <liang.qi@qt.io>2016-04-29 16:09:54 +0200
committerLiang Qi <liang.qi@qt.io>2016-04-29 17:55:20 +0200
commitb894a8def5d9107663e4968d2d395f5ef3059125 (patch)
treef894c50c9e5cbdd7ec102291eb94979977ce5b37 /src/plugins/platforms/xcb/qxcbdrag.cpp
parentd2304a28ca657634253af26ad803c7f292e6f4cc (diff)
parent002112e80516a29efbb6cef721d74c5fc39fc19d (diff)
Merge remote-tracking branch 'origin/5.6' into 5.7
Conflicts: mkspecs/features/qml_module.prf mkspecs/features/qt_common.prf src/gui/text/qzip.cpp src/plugins/platforms/cocoa/qnsview.mm src/plugins/platforms/windows/array.h src/testlib/qtestcase.cpp src/widgets/dialogs/qfilesystemmodel.h Change-Id: Ie41c5868415b81f7693c80e045497035504bb210
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbdrag.cpp')
-rw-r--r--src/plugins/platforms/xcb/qxcbdrag.cpp55
1 files changed, 44 insertions, 11 deletions
diff --git a/src/plugins/platforms/xcb/qxcbdrag.cpp b/src/plugins/platforms/xcb/qxcbdrag.cpp
index ea20ef7a04..1c9faa17ea 100644
--- a/src/plugins/platforms/xcb/qxcbdrag.cpp
+++ b/src/plugins/platforms/xcb/qxcbdrag.cpp
@@ -1078,6 +1078,40 @@ void QXcbDrag::cancel()
send_leave();
}
+// find an ancestor with XdndAware on it
+static xcb_window_t findXdndAwareParent(QXcbConnection *c, xcb_window_t window)
+{
+ xcb_window_t target = 0;
+ forever {
+ // check if window has XdndAware
+ xcb_get_property_cookie_t gpCookie = Q_XCB_CALL(
+ xcb_get_property(c->xcb_connection(), false, window,
+ c->atom(QXcbAtom::XdndAware), XCB_GET_PROPERTY_TYPE_ANY, 0, 0));
+ xcb_get_property_reply_t *gpReply = xcb_get_property_reply(
+ c->xcb_connection(), gpCookie, 0);
+ bool aware = gpReply && gpReply->type != XCB_NONE;
+ free(gpReply);
+ if (aware) {
+ target = window;
+ break;
+ }
+
+ // try window's parent
+ xcb_query_tree_cookie_t qtCookie = Q_XCB_CALL(
+ xcb_query_tree_unchecked(c->xcb_connection(), window));
+ xcb_query_tree_reply_t *qtReply = xcb_query_tree_reply(
+ c->xcb_connection(), qtCookie, NULL);
+ if (!qtReply)
+ break;
+ xcb_window_t root = qtReply->root;
+ xcb_window_t parent = qtReply->parent;
+ free(qtReply);
+ if (window == root)
+ break;
+ window = parent;
+ }
+ return target;
+}
void QXcbDrag::handleSelectionRequest(const xcb_selection_request_event_t *event)
{
@@ -1105,17 +1139,16 @@ void QXcbDrag::handleSelectionRequest(const xcb_selection_request_event_t *event
// xcb_convert_selection() that we sent the XdndDrop event to.
at = findTransactionByWindow(event->requestor);
}
-// if (at == -1 && event->time == XCB_CURRENT_TIME) {
-// // previous Qt versions always requested the data on a child of the target window
-// // using CurrentTime... but it could be asking for either drop data or the current drag's data
-// Window target = findXdndAwareParent(event->requestor);
-// if (target) {
-// if (current_target && current_target == target)
-// at = -2;
-// else
-// at = findXdndDropTransactionByWindow(target);
-// }
-// }
+
+ if (at == -1 && event->time == XCB_CURRENT_TIME) {
+ xcb_window_t target = findXdndAwareParent(connection(), event->requestor);
+ if (target) {
+ if (current_target == target)
+ at = -2;
+ else
+ at = findTransactionByWindow(target);
+ }
+ }
}
QDrag *transactionDrag = 0;