Merge remote-tracking branch 'origin/5.6' into 5.7

Change-Id: I75a8ddc0652f3c6f438ef98e940c9357450d29c6

7 files changed, 118 insertions, 46 deletions

diff --git a/src/client/qwaylanddisplay.cpp b/src/client/qwaylanddisplay.cpp
index 9ed76d2c..7b3ff7bb 100644
--- a/src/client/qwaylanddisplay.cpp
+++ b/src/client/qwaylanddisplay.cpp
@@ -137,6 +137,8 @@ QWaylandDisplay::QWaylandDisplay(QWaylandIntegration *waylandIntegration)
     , mLastInputSerial(0)
     , mLastInputDevice(0)
     , mLastInputWindow(0)
+    , mLastKeyboardFocus(Q_NULLPTR)
+    , mSyncCallback(Q_NULLPTR)
 {
     qRegisterMetaType<uint32_t>("uint32_t");
 
@@ -393,6 +395,73 @@ void QWaylandDisplay::setLastInputDevice(QWaylandInputDevice *device, uint32_t s
     mLastInputWindow = win;
 }
 
+bool QWaylandDisplay::shellManagesActiveState() const
+{
+    //TODO: This should be part of a shell interface used by the shell protocol implementations
+    return mShellXdg;
+}
+
+void QWaylandDisplay::handleWindowActivated(QWaylandWindow *window)
+{
+    if (mActiveWindows.contains(window))
+        return;
+
+    mActiveWindows.append(window);
+    requestWaylandSync();
+}
+
+void QWaylandDisplay::handleWindowDeactivated(QWaylandWindow *window)
+{
+    Q_ASSERT(!mActiveWindows.empty());
+
+    if (mActiveWindows.last() == window)
+        requestWaylandSync();
+
+    mActiveWindows.removeOne(window);
+}
+
+void QWaylandDisplay::handleKeyboardFocusChanged(QWaylandInputDevice *inputDevice)
+{
+    QWaylandWindow *keyboardFocus = inputDevice->keyboardFocus();
+
+    if (!shellManagesActiveState() && mLastKeyboardFocus != keyboardFocus) {
+        if (keyboardFocus)
+            handleWindowActivated(keyboardFocus);
+        if (mLastKeyboardFocus)
+            handleWindowDeactivated(mLastKeyboardFocus);
+    }
+    mLastKeyboardFocus = inputDevice->keyboardFocus();
+}
+
+void QWaylandDisplay::handleWaylandSync()
+{
+    // This callback is used to set the window activation because we may get an activate/deactivate
+    // pair, and the latter one would be lost in the QWindowSystemInterface queue, if we issue the
+    // handleWindowActivated() calls immediately.
+    QWindow *activeWindow = mActiveWindows.empty() ? Q_NULLPTR : mActiveWindows.last()->window();
+    if (activeWindow != QGuiApplication::focusWindow())
+        QWindowSystemInterface::handleWindowActivated(activeWindow);
+}
+
+const wl_callback_listener QWaylandDisplay::syncCallbackListener = {
+    [](void *data, struct wl_callback *callback, uint32_t time){
+        Q_UNUSED(time);
+        wl_callback_destroy(callback);
+        QWaylandDisplay *display = static_cast<QWaylandDisplay *>(data);
+        display->mSyncCallback = Q_NULLPTR;
+        display->handleWaylandSync();
+    }
+};
+
+void QWaylandDisplay::requestWaylandSync()
+{
+    if (mSyncCallback)
+        return;
+
+    mSyncCallback = wl_display_sync(mDisplay);
+    wl_callback_add_listener(mSyncCallback, &syncCallbackListener, this);
+}
+
 }
 
 QT_END_NAMESPACE
diff --git a/src/client/qwaylanddisplay_p.h b/src/client/qwaylanddisplay_p.h
index 1c0b46bf..b040d69a 100644
--- a/src/client/qwaylanddisplay_p.h
+++ b/src/client/qwaylanddisplay_p.h
@@ -54,6 +54,7 @@
 #include <QtCore/QObject>
 #include <QtCore/QRect>
 #include <QtCore/QPointer>
+#include <QtCore/QVector>
 
 #include <QtCore/QWaitCondition>
 
@@ -174,6 +175,11 @@ public:
     QWaylandWindow *lastInputWindow() const;
     void setLastInputDevice(QWaylandInputDevice *device, uint32_t serial, QWaylandWindow *window);
 
+    bool shellManagesActiveState() const;
+    void handleWindowActivated(QWaylandWindow *window);
+    void handleWindowDeactivated(QWaylandWindow *window);
+    void handleKeyboardFocusChanged(QWaylandInputDevice *inputDevice);
+
 public slots:
     void blockingReadEvents();
     void flushRequests();
@@ -183,6 +189,9 @@ private:
     void exitWithError();
     void checkError() const;
 
+    void handleWaylandSync();
+    void requestWaylandSync();
+
     struct Listener {
         RegistryListener listener;
         void *data;
@@ -213,6 +222,10 @@ private:
     uint32_t mLastInputSerial;
     QWaylandInputDevice *mLastInputDevice;
     QPointer<QWaylandWindow> mLastInputWindow;
+    QWaylandWindow *mLastKeyboardFocus;
+    QVector<QWaylandWindow *> mActiveWindows;
+    struct wl_callback *mSyncCallback;
+    static const wl_callback_listener syncCallbackListener;
 
     void registry_global(uint32_t id, const QString &interface, uint32_t version) Q_DECL_OVERRIDE;
     void registry_global_remove(uint32_t id) Q_DECL_OVERRIDE;
diff --git a/src/client/qwaylandinputdevice.cpp b/src/client/qwaylandinputdevice.cpp
index 13ab5efe..f490f07f 100644
--- a/src/client/qwaylandinputdevice.cpp
+++ b/src/client/qwaylandinputdevice.cpp
@@ -78,7 +78,6 @@ QWaylandInputDevice::Keyboard::Keyboard(QWaylandInputDevice *p)
     , mXkbMap(0)
     , mXkbState(0)
 #endif
-    , mFocusCallback(0)
     , mNativeModifiers(0)
 {
     connect(&mRepeatTimer, SIGNAL(timeout()), this, SLOT(repeatKey()));
@@ -131,8 +130,6 @@ QWaylandInputDevice::Keyboard::~Keyboard()
 #endif
     if (mFocus)
         QWindowSystemInterface::handleWindowActivated(0);
-    if (mFocusCallback)
-        wl_callback_destroy(mFocusCallback);
     if (mParent->mVersion >= 3)
         wl_keyboard_release(object());
     else
@@ -614,10 +611,7 @@ void QWaylandInputDevice::Keyboard::keyboard_enter(uint32_t time, struct wl_surf
     QWaylandWindow *window = QWaylandWindow::fromWlSurface(surface);
     mFocus = window;
 
-    if (!mFocusCallback) {
-        mFocusCallback = wl_display_sync(mParent->mDisplay);
-        wl_callback_add_listener(mFocusCallback, &QWaylandInputDevice::Keyboard::callback, this);
-    }
+    mParent->mQDisplay->handleKeyboardFocusChanged(mParent);
 }
 
 void QWaylandInputDevice::Keyboard::keyboard_leave(uint32_t time, struct wl_surface *surface)
@@ -632,31 +626,9 @@ void QWaylandInputDevice::Keyboard::keyboard_leave(uint32_t time, struct wl_surf
 
     mFocus = NULL;
 
-    // Use a callback to set the focus because we may get a leave/enter pair, and
-    // the latter one would be lost in the QWindowSystemInterface queue, if
-    // we issue the handleWindowActivated() calls immediately.
-    if (!mFocusCallback) {
-        mFocusCallback = wl_display_sync(mParent->mDisplay);
-        wl_callback_add_listener(mFocusCallback, &QWaylandInputDevice::Keyboard::callback, this);
-    }
-    mRepeatTimer.stop();
-}
-
-const wl_callback_listener QWaylandInputDevice::Keyboard::callback = {
-    QWaylandInputDevice::Keyboard::focusCallback
-};
+    mParent->mQDisplay->handleKeyboardFocusChanged(mParent);
 
-void QWaylandInputDevice::Keyboard::focusCallback(void *data, struct wl_callback *callback, uint32_t time)
-{
-    Q_UNUSED(time);
-    Q_UNUSED(callback);
-    QWaylandInputDevice::Keyboard *self = static_cast<QWaylandInputDevice::Keyboard *>(data);
-    if (self->mFocusCallback) {
-        wl_callback_destroy(self->mFocusCallback);
-        self->mFocusCallback = 0;
-    }
-
-    QWindowSystemInterface::handleWindowActivated(self->mFocus ? self->mFocus->window() : 0);
+    mRepeatTimer.stop();
 }
 
 static void sendKey(QWindow *tlw, ulong timestamp, QEvent::Type type, int key, Qt::KeyboardModifiers modifiers,
diff --git a/src/client/qwaylandinputdevice_p.h b/src/client/qwaylandinputdevice_p.h
index 3954328f..ea685223 100644
--- a/src/client/qwaylandinputdevice_p.h
+++ b/src/client/qwaylandinputdevice_p.h
@@ -197,7 +197,6 @@ public:
     xkb_keymap *mXkbMap;
     xkb_state *mXkbState;
 #endif
-    struct wl_callback *mFocusCallback;
     uint32_t mNativeModifiers;
 
     int mRepeatKey;
@@ -209,9 +208,6 @@ public:
 #endif
     QTimer mRepeatTimer;
 
-    static const wl_callback_listener callback;
-    static void focusCallback(void *data, struct wl_callback *callback, uint32_t time);
-
     Qt::KeyboardModifiers modifiers() const;
 
 private slots:
diff --git a/src/client/qwaylandshmbackingstore.cpp b/src/client/qwaylandshmbackingstore.cpp
index ea1fe7ba..13f823ed 100644
--- a/src/client/qwaylandshmbackingstore.cpp
+++ b/src/client/qwaylandshmbackingstore.cpp
@@ -308,29 +308,37 @@ void QWaylandShmBackingStore::updateDecorations()
     QPainter decorationPainter(entireSurface());
     decorationPainter.setCompositionMode(QPainter::CompositionMode_Source);
     QImage sourceImage = windowDecoration()->contentImage();
-    QRect target;
+
+    qreal dp = sourceImage.devicePixelRatio();
+    int dpWidth = int(sourceImage.width() / dp);
+    int dpHeight = int(sourceImage.height() / dp);
+    QMatrix sourceMatrix;
+    sourceMatrix.scale(dp, dp);
+    QRect target; // needs to be in device independent pixels
+
     //Top
     target.setX(0);
     target.setY(0);
-    target.setWidth(sourceImage.width());
+    target.setWidth(dpWidth);
     target.setHeight(windowDecorationMargins().top());
-    decorationPainter.drawImage(target, sourceImage, target);
+    decorationPainter.drawImage(target, sourceImage, sourceMatrix.mapRect(target));
 
     //Left
     target.setWidth(windowDecorationMargins().left());
-    target.setHeight(sourceImage.height());
-    decorationPainter.drawImage(target, sourceImage, target);
+    target.setHeight(dpHeight);
+    decorationPainter.drawImage(target, sourceImage, sourceMatrix.mapRect(target));
 
     //Right
-    target.setX(sourceImage.width() - windowDecorationMargins().right());
-    decorationPainter.drawImage(target, sourceImage, target);
+    target.setX(dpWidth - windowDecorationMargins().right());
+    target.setWidth(windowDecorationMargins().right());
+    decorationPainter.drawImage(target, sourceImage, sourceMatrix.mapRect(target));
 
     //Bottom
     target.setX(0);
-    target.setY(sourceImage.height() - windowDecorationMargins().bottom());
-    target.setWidth(sourceImage.width());
+    target.setY(dpHeight - windowDecorationMargins().bottom());
+    target.setWidth(dpWidth);
     target.setHeight(windowDecorationMargins().bottom());
-    decorationPainter.drawImage(target, sourceImage, target);
+    decorationPainter.drawImage(target, sourceImage, sourceMatrix.mapRect(target));
 }
 
 QWaylandAbstractDecoration *QWaylandShmBackingStore::windowDecoration() const
diff --git a/src/client/qwaylandxdgsurface.cpp b/src/client/qwaylandxdgsurface.cpp
index 69532b51..93263e0a 100644
--- a/src/client/qwaylandxdgsurface.cpp
+++ b/src/client/qwaylandxdgsurface.cpp
@@ -58,6 +58,7 @@ QWaylandXdgSurface::QWaylandXdgSurface(struct ::xdg_surface *xdg_surface, QWayla
     , m_maximized(false)
     , m_minimized(false)
     , m_fullscreen(false)
+    , m_active(false)
     , m_extendedWindow(Q_NULLPTR)
 {
     if (window->display()->windowExtension())
@@ -66,6 +67,9 @@ QWaylandXdgSurface::QWaylandXdgSurface(struct ::xdg_surface *xdg_surface, QWayla
 
 QWaylandXdgSurface::~QWaylandXdgSurface()
 {
+    if (m_active)
+        window()->display()->handleWindowDeactivated(m_window);
+
     xdg_surface_destroy(object());
     delete m_extendedWindow;
 }
@@ -182,6 +186,7 @@ void QWaylandXdgSurface::xdg_surface_configure(int32_t width, int32_t height, st
     size_t numStates = states->size / sizeof(uint32_t);
     bool aboutToMaximize = false;
     bool aboutToFullScreen = false;
+    bool aboutToActivate = false;
 
     for (size_t i = 0; i < numStates; i++) {
         switch (state[i]) {
@@ -195,13 +200,21 @@ void QWaylandXdgSurface::xdg_surface_configure(int32_t width, int32_t height, st
             m_normalSize = QSize(width, height);
             break;
         case XDG_SURFACE_STATE_ACTIVATED:
-            // TODO: here about the missing window activation
+            aboutToActivate = true;
             break;
         default:
             break;
         }
     }
 
+    if (!m_active && aboutToActivate) {
+        m_active = true;
+        window()->display()->handleWindowActivated(m_window);
+    } else if (m_active && !aboutToActivate) {
+        m_active = false;
+        window()->display()->handleWindowDeactivated(m_window);
+    }
+
     if (!m_fullscreen && aboutToFullScreen) {
         if (!m_maximized)
             m_normalSize = m_window->window()->frameGeometry().size();
diff --git a/src/client/qwaylandxdgsurface_p.h b/src/client/qwaylandxdgsurface_p.h
index 24eb8651..e98aa41e 100644
--- a/src/client/qwaylandxdgsurface_p.h
+++ b/src/client/qwaylandxdgsurface_p.h
@@ -112,6 +112,7 @@ private:
     bool m_maximized;
     bool m_minimized;
     bool m_fullscreen;
+    bool m_active;
     QSize m_normalSize;
     QMargins m_margins;
     QWaylandExtendedSurface *m_extendedWindow;