Move the Windows Event Dispatcher into QtGui

Task-number: QTBUG-83255
Change-Id: Ida86f27d7f52b9be48fbea909979320866ff8dae
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>

1 files changed, 230 insertions, 0 deletions

diff --git a/src/gui/platform/windows/qwindowsguieventdispatcher.cpp b/src/gui/platform/windows/qwindowsguieventdispatcher.cpp
new file mode 100644
index 0000000000..ca4bc4091b
--- /dev/null
+++ b/src/gui/platform/windows/qwindowsguieventdispatcher.cpp
@@ -0,0 +1,230 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Samuel Gaist <samuel.gaist@edeltech.ch>
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwindowsguieventdispatcher_p.h"
+
+#include <qpa/qwindowsysteminterface.h>
+
+#include <QtCore/QCoreApplication>
+#include <QtCore/QDebug>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QWindowsGuiEventDispatcher
+    \brief Event dispatcher for Windows
+
+    Maintains a global stack storing the current event dispatcher and
+    its processing flags for access from the Windows procedure
+    qWindowsWndProc. Handling the QPA gui events should be done
+    from within the qWindowsWndProc to ensure correct processing of messages.
+
+    \internal
+*/
+
+QWindowsGuiEventDispatcher::QWindowsGuiEventDispatcher(QObject *parent) :
+    QEventDispatcherWin32(parent)
+{
+    setObjectName(QStringLiteral("QWindowsGuiEventDispatcher"));
+    createInternalHwnd(); // QTBUG-40881: Do not delay registering timers, etc. for QtMfc.
+}
+
+bool QWindowsGuiEventDispatcher::processEvents(QEventLoop::ProcessEventsFlags flags)
+{
+    const QEventLoop::ProcessEventsFlags oldFlags = m_flags;
+    m_flags = flags;
+    const bool rc = QEventDispatcherWin32::processEvents(flags);
+    m_flags = oldFlags;
+    return rc;
+}
+
+void QWindowsGuiEventDispatcher::sendPostedEvents()
+{
+    QEventDispatcherWin32::sendPostedEvents();
+    QWindowSystemInterface::sendWindowSystemEvents(m_flags);
+}
+
+// Helpers for printing debug output for WM_* messages.
+struct MessageDebugEntry
+{
+    UINT message;
+    const char *description;
+    bool interesting;
+};
+
+static const MessageDebugEntry
+messageDebugEntries[] = {
+    {WM_CREATE, "WM_CREATE", true},
+    {WM_PAINT, "WM_PAINT", true},
+    {WM_CLOSE, "WM_CLOSE", true},
+    {WM_DESTROY, "WM_DESTROY", true},
+    {WM_MOVE, "WM_MOVE", true},
+    {WM_SIZE, "WM_SIZE", true},
+    {WM_GETICON, "WM_GETICON", false},
+    {WM_KEYDOWN, "WM_KEYDOWN", true},
+    {WM_SYSKEYDOWN, "WM_SYSKEYDOWN", true},
+    {WM_SYSCOMMAND, "WM_SYSCOMMAND", true},
+    {WM_KEYUP, "WM_KEYUP", true},
+    {WM_SYSKEYUP, "WM_SYSKEYUP", true},
+#if defined(WM_APPCOMMAND)
+    {WM_APPCOMMAND, "WM_APPCOMMAND", true},
+#endif
+    {WM_IME_CHAR, "WM_IMECHAR", true},
+    {WM_IME_KEYDOWN, "WM_IMECHAR", true},
+    {WM_CANCELMODE,  "WM_CANCELMODE", true},
+    {WM_CHAR, "WM_CHAR", true},
+    {WM_DEADCHAR, "WM_DEADCHAR", true},
+    {WM_ACTIVATE, "WM_ACTIVATE", true},
+    {WM_SETFOCUS, "WM_SETFOCUS", true},
+    {WM_KILLFOCUS, "WM_KILLFOCUS", true},
+    {WM_ENABLE, "WM_ENABLE", true},
+    {WM_SHOWWINDOW, "WM_SHOWWINDOW", true},
+    {WM_WINDOWPOSCHANGED, "WM_WINDOWPOSCHANGED", true},
+    {WM_SETCURSOR, "WM_SETCURSOR", false},
+    {WM_GETFONT, "WM_GETFONT", true},
+    {WM_LBUTTONDOWN, "WM_LBUTTONDOWN", true},
+    {WM_LBUTTONUP, "WM_LBUTTONUP", true},
+    {WM_LBUTTONDBLCLK, "WM_LBUTTONDBLCLK", true},
+    {WM_RBUTTONDOWN, "WM_RBUTTONDOWN", true},
+    {WM_RBUTTONUP, "WM_RBUTTONUP", true},
+    {WM_RBUTTONDBLCLK, "WM_RBUTTONDBLCLK", true},
+    {WM_MBUTTONDOWN, "WM_MBUTTONDOWN", true},
+    {WM_MBUTTONUP, "WM_MBUTTONUP", true},
+    {WM_MBUTTONDBLCLK, "WM_MBUTTONDBLCLK", true},
+    {WM_MOUSEWHEEL, "WM_MOUSEWHEEL", true},
+    {WM_XBUTTONDOWN, "WM_XBUTTONDOWN", true},
+    {WM_XBUTTONUP, "WM_XBUTTONUP", true},
+    {WM_XBUTTONDBLCLK, "WM_XBUTTONDBLCLK", true},
+    {WM_MOUSEHWHEEL, "WM_MOUSEHWHEEL", true},
+    {WM_GETOBJECT, "WM_GETOBJECT", true},
+    {WM_IME_SETCONTEXT, "WM_IME_SETCONTEXT", true},
+    {WM_INPUTLANGCHANGE, "WM_INPUTLANGCHANGE", true},
+    {WM_IME_NOTIFY, "WM_IME_NOTIFY", true},
+#if defined(WM_DWMNCRENDERINGCHANGED)
+    {WM_DWMNCRENDERINGCHANGED, "WM_DWMNCRENDERINGCHANGED", true},
+#endif
+    {WM_IME_SETCONTEXT, "WM_IME_SETCONTEXT", true},
+    {WM_IME_NOTIFY, "WM_IME_NOTIFY", true},
+    {WM_RENDERFORMAT, "WM_RENDERFORMAT", true},
+    {WM_RENDERALLFORMATS, "WM_RENDERALLFORMATS", true},
+    {WM_DESTROYCLIPBOARD, "WM_DESTROYCLIPBOARD", true},
+    {WM_CAPTURECHANGED, "WM_CAPTURECHANGED", true},
+    {WM_IME_STARTCOMPOSITION, "WM_IME_STARTCOMPOSITION", true},
+    {WM_IME_COMPOSITION, "WM_IME_COMPOSITION", true},
+    {WM_IME_ENDCOMPOSITION, "WM_IME_ENDCOMPOSITION", true},
+    {WM_IME_NOTIFY, "WM_IME_NOTIFY", true},
+    {WM_IME_REQUEST, "WM_IME_REQUEST", true},
+#if !defined(QT_NO_SESSIONMANAGER)
+    {WM_QUERYENDSESSION, "WM_QUERYENDSESSION", true},
+    {WM_ENDSESSION, "WM_ENDSESSION", true},
+#endif
+    {WM_MOUSEACTIVATE,"WM_MOUSEACTIVATE", true},
+    {WM_CHILDACTIVATE, "WM_CHILDACTIVATE", true},
+    {WM_PARENTNOTIFY, "WM_PARENTNOTIFY", true},
+    {WM_ENTERIDLE, "WM_ENTERIDLE", false},
+    {WM_GETMINMAXINFO, "WM_GETMINMAXINFO", true},
+    {WM_WINDOWPOSCHANGING, "WM_WINDOWPOSCHANGING", true},
+    {WM_NCCREATE, "WM_NCCREATE", true},
+    {WM_NCDESTROY, "WM_NCDESTROY", true},
+    {WM_NCCALCSIZE, "WM_NCCALCSIZE", true},
+    {WM_NCACTIVATE, "WM_NCACTIVATE", true},
+    {WM_NCMOUSEMOVE, "WM_NCMOUSEMOVE", true},
+    {WM_NCMOUSELEAVE, "WM_NCMOUSELEAVE", true},
+    {WM_NCLBUTTONDOWN, "WM_NCLBUTTONDOWN", true},
+    {WM_NCLBUTTONUP, "WM_NCLBUTTONUP", true},
+    {WM_ACTIVATEAPP, "WM_ACTIVATEAPP", true},
+    {WM_NCPAINT, "WM_NCPAINT", true},
+    {WM_ERASEBKGND, "WM_ERASEBKGND", true},
+    {WM_MOUSEMOVE, "WM_MOUSEMOVE", true},
+    {WM_MOUSELEAVE, "WM_MOUSELEAVE", true},
+    {WM_NCHITTEST, "WM_NCHITTEST", false},
+#ifdef WM_TOUCH
+    {WM_TOUCH, "WM_TOUCH", true},
+#endif
+    {WM_CHANGECBCHAIN, "WM_CHANGECBCHAIN", true},
+    {WM_DISPLAYCHANGE, "WM_DISPLAYCHANGE", true},
+    {WM_DRAWCLIPBOARD, "WM_DRAWCLIPBOARD", true},
+    {WM_THEMECHANGED, "WM_THEMECHANGED", true},
+    {0x90, "WM_UAHDESTROYWINDOW", true},
+    {0x272, "WM_UNREGISTER_WINDOW_SERVICES", true},
+#ifdef WM_POINTERUPDATE
+    {WM_POINTERDEVICECHANGE, "WM_POINTERDEVICECHANGE", true},
+    {WM_POINTERDEVICEINRANGE, "WM_POINTERDEVICEINRANGE", true},
+    {WM_POINTERDEVICEOUTOFRANGE, "WM_POINTERDEVICEOUTOFRANGE", true},
+    {WM_NCPOINTERUPDATE, "WM_NCPOINTERUPDATE", true},
+    {WM_NCPOINTERDOWN, "WM_NCPOINTERDOWN", true},
+    {WM_NCPOINTERUP, "WM_NCPOINTERUP", true},
+    {WM_POINTERUPDATE, "WM_POINTERUPDATE", true},
+    {WM_POINTERDOWN, "WM_POINTERDOWN", true},
+    {WM_POINTERUP, "WM_POINTERUP", true},
+    {WM_POINTERENTER, "WM_POINTERENTER", true},
+    {WM_POINTERLEAVE, "WM_POINTERLEAVE", true},
+    {WM_POINTERACTIVATE, "WM_POINTERACTIVATE", true},
+    {WM_POINTERCAPTURECHANGED, "WM_POINTERCAPTURECHANGED", true},
+    {WM_TOUCHHITTESTING, "WM_TOUCHHITTESTING", true},
+    {WM_POINTERWHEEL, "WM_POINTERWHEEL", true},
+    {WM_POINTERHWHEEL, "WM_POINTERHWHEEL", true},
+#endif // WM_POINTERUPDATE
+#ifdef DM_POINTERHITTEST
+    {DM_POINTERHITTEST, "DM_POINTERHITTEST", true},
+#endif // DM_POINTERHITTEST
+#ifdef WM_POINTERROUTEDTO
+    {WM_POINTERROUTEDTO, "WM_POINTERROUTEDTO", true},
+    {WM_POINTERROUTEDAWAY, "WM_POINTERROUTEDAWAY", true},
+    {WM_POINTERROUTEDRELEASED, "WM_POINTERROUTEDRELEASED", true},
+#endif // WM_POINTERROUTEDTO
+};
+
+static inline const MessageDebugEntry *messageDebugEntry(UINT msg)
+{
+    for (size_t i = 0; i < sizeof(messageDebugEntries)/sizeof(MessageDebugEntry); i++)
+        if (messageDebugEntries[i].message == msg)
+            return messageDebugEntries + i;
+    return 0;
+}
+
+const char *QWindowsGuiEventDispatcher::windowsMessageName(UINT msg)
+{
+    if (const MessageDebugEntry *e = messageDebugEntry(msg))
+        return e->description;
+    return "Unknown";
+}
+
+QT_END_NAMESPACE