xcb: Expose the systemtray functions through platformheaders

Change-Id: I3504141d8130bbfe3246d81b61c8cbb010e255d6
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>

7 files changed, 181 insertions, 52 deletions

diff --git a/src/platformheaders/xcbfunctions/qxcbfunctionshelper.h b/src/platformheaders/xcbfunctions/qxcbfunctionshelper.h
new file mode 100644
index 0000000000..a9d734a387
--- /dev/null
+++ b/src/platformheaders/xcbfunctions/qxcbfunctionshelper.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QXCBFUNCTIONHELPER_H
+#define QXCBFUNCTIONHELPER_H
+
+#include <QtCore/QByteArray>
+#include <QtGui/QGuiApplication>
+
+QT_BEGIN_NAMESPACE
+
+namespace QXcbFunctionsHelper
+{
+
+template<typename ReturnT, typename FunctionT>
+ReturnT callPlatformFunction(const QByteArray &functionName)
+{
+    FunctionT func = reinterpret_cast<FunctionT>(QGuiApplication::platformFunction(functionName));
+    return func ? func() : ReturnT();
+}
+
+template<typename ReturnT, typename FunctionT, typename Arg1>
+ReturnT callPlatformFunction(const QByteArray &functionName, Arg1 a1)
+{
+    FunctionT func = reinterpret_cast<FunctionT>(QGuiApplication::platformFunction(functionName));
+    return func ? func(a1) : ReturnT();
+}
+
+template<typename ReturnT, typename FunctionT, typename Arg1, typename Arg2>
+ReturnT callPlatformFunction(const QByteArray &functionName, Arg1 a1, Arg2 a2)
+{
+    FunctionT func = reinterpret_cast<FunctionT>(QGuiApplication::platformFunction(functionName));
+    return func ? func(a1, a2) : ReturnT();
+}
+
+template<typename ReturnT, typename FunctionT, typename Arg1, typename Arg2, typename Arg3>
+ReturnT callPlatformFunction(const QByteArray &functionName, Arg1 a1, Arg2 a2, Arg3 a3)
+{
+    FunctionT func = reinterpret_cast<FunctionT>(QGuiApplication::platformFunction(functionName));
+    return func ? func(a1, a2, a3) : ReturnT();
+}
+
+template<typename ReturnT, typename FunctionT, typename Arg1, typename Arg2, typename Arg3, typename Arg4>
+ReturnT callPlatformFunction(const QByteArray &functionName, Arg1 a1, Arg2 a2, Arg3 a3, Arg4 a4)
+{
+    FunctionT func = reinterpret_cast<FunctionT>(QGuiApplication::platformFunction(functionName));
+    return func ? func(a1, a2, a3, a4) : ReturnT();
+}
+
+}
+
+QT_END_NAMESPACE
+
+#endif  /*QXCBFUNCTIONHELPER_H*/
diff --git a/src/platformheaders/xcbfunctions/qxcbwindowfunctions.h b/src/platformheaders/xcbfunctions/qxcbwindowfunctions.h
index f9008039a1..e07679ddcd 100644
--- a/src/platformheaders/xcbfunctions/qxcbwindowfunctions.h
+++ b/src/platformheaders/xcbfunctions/qxcbwindowfunctions.h
@@ -34,8 +34,7 @@
 #ifndef QXCBWINDOWFUNCTIONS_H
 #define QXCBWINDOWFUNCTIONS_H
 
-#include <QtCore/QByteArray>
-#include <QtGui/QGuiApplication>
+#include "qxcbfunctionshelper.h"
 
 QT_BEGIN_NAMESPACE
 
@@ -65,12 +64,30 @@ public:
 
     typedef void (*SetWmWindowType)(QWindow *window, QXcbWindowFunctions::WmWindowTypes windowType);
     static const QByteArray setWmWindowTypeIdentifier() { return QByteArrayLiteral("XcbSetWmWindowType"); }
-
     static void setWmWindowType(QWindow *window, WmWindowType type)
     {
-        SetWmWindowType func = reinterpret_cast<SetWmWindowType>(QGuiApplication::platformFunction(setWmWindowTypeIdentifier()));
-        if (func)
-            func(window, type);
+        return QXcbFunctionsHelper::callPlatformFunction<void, SetWmWindowType, QWindow *, WmWindowType>(setWmWindowTypeIdentifier(), window, type);
+    }
+
+    typedef void (*SetParentRelativeBackPixmap)(const QWindow *window);
+    static const QByteArray setParentRelativeBackPixmapIdentifier() { return QByteArrayLiteral("XcbSetParentRelativeBackPixmap"); }
+    static void setParentRelativeBackPixmap(const QWindow *window)
+    {
+        return QXcbFunctionsHelper::callPlatformFunction<void, SetParentRelativeBackPixmap, const QWindow *>(setParentRelativeBackPixmapIdentifier(), window);
+    }
+
+    typedef bool (*RequestSystemTrayWindowDock)(const QWindow *window);
+    static const QByteArray requestSystemTrayWindowDockIdentifier() { return QByteArrayLiteral("XcbRequestSystemTrayWindowDockIdentifier"); }
+    static bool requestSystemTrayWindowDock(const QWindow *window)
+    {
+        return QXcbFunctionsHelper::callPlatformFunction<bool, RequestSystemTrayWindowDock, const QWindow *>(requestSystemTrayWindowDockIdentifier(), window);
+    }
+
+    typedef QRect (*SystemTrayWindowGlobalGeometry)(const QWindow *window);
+    static const QByteArray systemTrayWindowGlobalGeometryIdentifier() { return QByteArrayLiteral("XcbSystemTrayWindowGlobalGeometryIdentifier"); }
+    static QRect systemTrayWindowGlobalGeometry(const QWindow *window)
+    {
+        return QXcbFunctionsHelper::callPlatformFunction<QRect, SystemTrayWindowGlobalGeometry, const QWindow *>(systemTrayWindowGlobalGeometryIdentifier(), window);
     }
 };
 
diff --git a/src/plugins/platforms/xcb/qxcbnativeinterface.cpp b/src/plugins/platforms/xcb/qxcbnativeinterface.cpp
index 5f322108a5..614390a8d8 100644
--- a/src/plugins/platforms/xcb/qxcbnativeinterface.cpp
+++ b/src/plugins/platforms/xcb/qxcbnativeinterface.cpp
@@ -109,22 +109,12 @@ bool QXcbNativeInterface::systemTrayAvailable(const QScreen *screen) const
 
 bool QXcbNativeInterface::requestSystemTrayWindowDock(const QWindow *window)
 {
-    const QPlatformWindow *platformWindow = window->handle();
-    if (!platformWindow)
-        return false;
-    QXcbSystemTrayTracker *trayTracker = systemTrayTracker(window->screen());
-    if (!trayTracker)
-        return false;
-    trayTracker->requestSystemTrayWindowDock(static_cast<const QXcbWindow *>(platformWindow)->xcb_window());
-    return true;
+    return QXcbWindow::requestSystemTrayWindowDockStatic(window);
 }
 
 QRect QXcbNativeInterface::systemTrayWindowGlobalGeometry(const QWindow *window)
 {
-    if (const QPlatformWindow *platformWindow = window->handle())
-        if (const QXcbSystemTrayTracker *trayTracker = systemTrayTracker(window->screen()))
-            return trayTracker->systemTrayWindowGlobalGeometry(static_cast<const QXcbWindow *>(platformWindow)->xcb_window());
-    return QRect();
+    return QXcbWindow::systemTrayWindowGlobalGeometryStatic(window);
 }
 
 xcb_window_t QXcbNativeInterface::locateSystemTray(xcb_connection_t *conn, const QXcbScreen *screen)
@@ -193,16 +183,9 @@ bool QXcbNativeInterface::systrayVisualHasAlphaChannel() {
     }
 }
 
-void QXcbNativeInterface::setParentRelativeBackPixmap(const QWindow *qwindow)
+void QXcbNativeInterface::setParentRelativeBackPixmap(QWindow *window)
 {
-    if (const QPlatformWindow *platformWindow = qwindow->handle()) {
-        const QXcbWindow *qxwindow = static_cast<const QXcbWindow *>(platformWindow);
-        xcb_connection_t *xcb_conn = qxwindow->xcb_connection();
-
-        const quint32 mask = XCB_CW_BACK_PIXMAP;
-        const quint32 values[] = { XCB_BACK_PIXMAP_PARENT_RELATIVE };
-        Q_XCB_CALL(xcb_change_window_attributes(xcb_conn, qxwindow->xcb_window(), mask, values));
-    }
+    QXcbWindow::setParentRelativeBackPixmapStatic(window);
 }
 
 void *QXcbNativeInterface::nativeResourceForIntegration(const QByteArray &resourceString)
@@ -378,9 +361,18 @@ QFunctionPointer QXcbNativeInterface::platformFunction(const QByteArray &functio
         return func;
 
     //case sensitive
-    if (function == QXcbWindowFunctions::setWmWindowTypeIdentifier()) {
-        return QFunctionPointer(QXcbWindow::setWmWindowTypeStatic);
-    }
+    if (function == QXcbWindowFunctions::setWmWindowTypeIdentifier())
+        return QFunctionPointer(QXcbWindowFunctions::SetWmWindowType(QXcbWindow::setWmWindowTypeStatic));
+
+    if (function == QXcbWindowFunctions::setParentRelativeBackPixmapIdentifier())
+        return QFunctionPointer(QXcbWindowFunctions::SetParentRelativeBackPixmap(QXcbWindow::setParentRelativeBackPixmapStatic));
+
+    if (function == QXcbWindowFunctions::requestSystemTrayWindowDockIdentifier())
+        return QFunctionPointer(QXcbWindowFunctions::RequestSystemTrayWindowDock(QXcbWindow::requestSystemTrayWindowDockStatic));
+
+    if (function == QXcbWindowFunctions::systemTrayWindowGlobalGeometryIdentifier())
+        return QFunctionPointer(QXcbWindowFunctions::SystemTrayWindowGlobalGeometry(QXcbWindow::systemTrayWindowGlobalGeometryStatic));
+
     return Q_NULLPTR;
 }
 
diff --git a/src/plugins/platforms/xcb/qxcbnativeinterface.h b/src/plugins/platforms/xcb/qxcbnativeinterface.h
index 64da388258..bf7058f8e3 100644
--- a/src/plugins/platforms/xcb/qxcbnativeinterface.h
+++ b/src/plugins/platforms/xcb/qxcbnativeinterface.h
@@ -104,7 +104,7 @@ public:
 
     Q_INVOKABLE void beep();
     Q_INVOKABLE bool systemTrayAvailable(const QScreen *screen) const;
-    Q_INVOKABLE void setParentRelativeBackPixmap(const QWindow *window);
+    Q_INVOKABLE void setParentRelativeBackPixmap(QWindow *window);
     Q_INVOKABLE bool systrayVisualHasAlphaChannel();
     Q_INVOKABLE bool requestSystemTrayWindowDock(const QWindow *window);
     Q_INVOKABLE QRect systemTrayWindowGlobalGeometry(const QWindow *window);
diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp
index 34289fb90e..1d8ba69e55 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.cpp
+++ b/src/plugins/platforms/xcb/qxcbwindow.cpp
@@ -46,6 +46,7 @@
 #include "qxcbwmsupport.h"
 #include "qxcbimage.h"
 #include "qxcbnativeinterface.h"
+#include "qxcbsystemtraytracker.h"
 
 #include <qpa/qplatformintegration.h>
 
@@ -1664,6 +1665,48 @@ void QXcbWindow::setWmWindowType(QXcbWindowFunctions::WmWindowTypes types)
     xcb_flush(xcb_connection());
 }
 
+void QXcbWindow::setParentRelativeBackPixmapStatic(QWindow *window)
+{
+    if (window->handle())
+        static_cast<QXcbWindow *>(window->handle())->setParentRelativeBackPixmap();
+}
+
+void QXcbWindow::setParentRelativeBackPixmap()
+{
+    const quint32 mask = XCB_CW_BACK_PIXMAP;
+    const quint32 values[] = { XCB_BACK_PIXMAP_PARENT_RELATIVE };
+    Q_XCB_CALL(xcb_change_window_attributes(xcb_connection(), m_window, mask, values));
+}
+
+bool QXcbWindow::requestSystemTrayWindowDockStatic(const QWindow *window)
+{
+    if (window->handle())
+        return static_cast<QXcbWindow *>(window->handle())->requestSystemTrayWindowDock();
+    return false;
+}
+
+bool QXcbWindow::requestSystemTrayWindowDock() const
+{
+    if (!connection()->systemTrayTracker())
+        return false;
+    connection()->systemTrayTracker()->requestSystemTrayWindowDock(m_window);
+    return true;
+}
+
+QRect QXcbWindow::systemTrayWindowGlobalGeometryStatic(const QWindow *window)
+{
+    if (window->handle())
+        return static_cast<QXcbWindow *>(window->handle())->systemTrayWindowGlobalGeometry();
+    return QRect();
+}
+
+QRect QXcbWindow::systemTrayWindowGlobalGeometry() const
+{
+   if (!connection()->systemTrayTracker())
+       return QRect();
+   return connection()->systemTrayTracker()->systemTrayWindowGlobalGeometry(m_window);
+}
+
 class ExposeCompressor
 {
 public:
diff --git a/src/plugins/platforms/xcb/qxcbwindow.h b/src/plugins/platforms/xcb/qxcbwindow.h
index 8f78be573c..20c7d5a7b2 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.h
+++ b/src/plugins/platforms/xcb/qxcbwindow.h
@@ -142,6 +142,15 @@ public:
     QXcbWindowFunctions::WmWindowTypes wmWindowTypes() const;
     void setWmWindowType(QXcbWindowFunctions::WmWindowTypes types);
 
+    static void setParentRelativeBackPixmapStatic(QWindow *window);
+    void setParentRelativeBackPixmap();
+
+    static bool requestSystemTrayWindowDockStatic(const QWindow *window);
+    bool requestSystemTrayWindowDock() const;
+
+    static QRect systemTrayWindowGlobalGeometryStatic(const QWindow *window);
+    QRect systemTrayWindowGlobalGeometry() const;
+
     bool needsSync() const;
 
     void postSyncWindowRequest();
diff --git a/src/widgets/util/qsystemtrayicon_x11.cpp b/src/widgets/util/qsystemtrayicon_x11.cpp
index 2b153d53d9..b9b67c1df2 100644
--- a/src/widgets/util/qsystemtrayicon_x11.cpp
+++ b/src/widgets/util/qsystemtrayicon_x11.cpp
@@ -52,6 +52,7 @@
 #include <private/qguiapplication_p.h>
 #include <qdebug.h>
 
+#include <QtPlatformHeaders/qxcbwindowfunctions.h>
 #ifndef QT_NO_SYSTEMTRAYICON
 QT_BEGIN_NAMESPACE
 
@@ -119,10 +120,7 @@ QSystemTrayIconSys::QSystemTrayIconSys(QSystemTrayIcon *qIn)
     setAttribute(Qt::WA_TranslucentBackground, hasAlphaChannel);
     if (!hasAlphaChannel) {
         createWinId();
-        QMetaObject::invokeMethod(QGuiApplication::platformNativeInterface(),
-                                    "setParentRelativeBackPixmap", Qt::DirectConnection,
-                                    Q_ARG(const QWindow *, windowHandle())
-                                 );
+        QXcbWindowFunctions::setParentRelativeBackPixmap(windowHandle());
 
         // XXX: This is actually required, but breaks things ("QWidget::paintEngine: Should no
         // longer be called"). Why is this needed? When the widget is drawn, we use tricks to grab
@@ -143,15 +141,9 @@ bool QSystemTrayIconSys::addToTray()
     createWinId();
     setMouseTracking(true);
 
-    bool requestResult = false;
-    if (!QMetaObject::invokeMethod(QGuiApplication::platformNativeInterface(),
-                                   "requestSystemTrayWindowDock", Qt::DirectConnection,
-                                   Q_RETURN_ARG(bool, requestResult),
-                                   Q_ARG(const QWindow *, windowHandle()))
-            || !requestResult) {
-        qWarning("requestSystemTrayWindowDock failed.");
+    if (!QXcbWindowFunctions::requestSystemTrayWindowDock(windowHandle()))
         return false;
-    }
+
     if (!background.isNull())
         background = QPixmap();
     show();
@@ -171,15 +163,7 @@ void QSystemTrayIconSys::systemTrayWindowChanged(QScreen *)
 
 QRect QSystemTrayIconSys::globalGeometry() const
 {
-    QRect result;
-    if (!QMetaObject::invokeMethod(QGuiApplication::platformNativeInterface(),
-                                   "systemTrayWindowGlobalGeometry", Qt::DirectConnection,
-                                   Q_RETURN_ARG(QRect, result),
-                                   Q_ARG(const QWindow *, windowHandle()))
-        || !result.isValid()) {
-        qWarning("systemTrayWindowGlobalGeometry failed.");
-    }
-    return result;
+    return QXcbWindowFunctions::systemTrayWindowGlobalGeometry(windowHandle());
 }
 
 void QSystemTrayIconSys::mousePressEvent(QMouseEvent *ev)