From d19690ce984acc566754c79148b6b1ab1a5702af Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <mgraesslin@kde.org>
Date: Fri, 29 Apr 2016 15:08:22 +0200
Subject: [PATCH] Honor input mask set on internal windows

Summary:
This ensures that QWindow::setMask works for KWin internal windows.
Without KWin sends all pointer events to the QWindow, even if the
mask says it shouldn't get events.

Reviewers: #plasma

Subscribers: plasma-devel

Projects: #plasma

Differential Revision: https://phabricator.kde.org/D1509
---
 autotests/wayland/internal_window.cpp | 10 ++++++++++
 pointer_input.cpp                     |  5 +++++
 2 files changed, 15 insertions(+)

diff --git a/autotests/wayland/internal_window.cpp b/autotests/wayland/internal_window.cpp
index f252b9a580..4085f8a675 100644
--- a/autotests/wayland/internal_window.cpp
+++ b/autotests/wayland/internal_window.cpp
@@ -191,6 +191,16 @@ void InternalWindowTest::testEnterLeave()
 
     kwinApp()->platform()->pointerMotion(QPoint(101, 50), timestamp++);
     QTRY_COMPARE(leaveSpy.count(), 1);
+
+    // set a mask on the window
+    win.setMask(QRegion(10, 20, 30, 40));
+    // outside the mask we should not get an enter
+    kwinApp()->platform()->pointerMotion(QPoint(5, 5), timestamp++);
+    QVERIFY(!enterSpy.wait(100));
+    QCOMPARE(enterSpy.count(), 1);
+    // inside the mask we should still get an enter
+    kwinApp()->platform()->pointerMotion(QPoint(25, 27), timestamp++);
+    QTRY_COMPARE(enterSpy.count(), 2);
 }
 
 void InternalWindowTest::testPointerPressRelease()
diff --git a/pointer_input.cpp b/pointer_input.cpp
index 1c5b92eb37..b92ce3110f 100644
--- a/pointer_input.cpp
+++ b/pointer_input.cpp
@@ -314,6 +314,11 @@ void PointerInputRedirection::updateInternalWindow()
                     continue;
                 }
                 if (w->geometry().contains(m_pos.toPoint())) {
+                    // check input mask
+                    const QRegion mask = w->mask().translated(w->geometry().topLeft());
+                    if (!mask.isEmpty() && !mask.contains(m_pos.toPoint())) {
+                        continue;
+                    }
                     m_internalWindow = QPointer<QWindow>(w);
                     found = true;
                     break;