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/****************************************************************************
**
** Copyright (C) 2013 Ivan Vizir <define-true-false@yandex.com>
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtWinExtras module 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qwineventfilter_p.h"
#include "qwinfunctions.h"
#include "qwinevent.h"
#include <QGuiApplication>
#include <QWindow>
#ifndef WM_DWMCOLORIZATIONCOLORCHANGED
# define WM_DWMCOLORIZATIONCOLORCHANGED 0x0320
#endif
#ifndef WM_DWMCOMPOSITIONCHANGED
# define WM_DWMCOMPOSITIONCHANGED 0x031E
#endif
QWinEventFilter *QWinEventFilter::instance = 0;
QWinEventFilter::QWinEventFilter() :
tbButtonCreatedMsgId(RegisterWindowMessageW(L"TaskbarButtonCreated"))
{
}
QWinEventFilter::~QWinEventFilter()
{
instance = 0;
}
bool QWinEventFilter::nativeEventFilter(const QByteArray &, void *message, long *result)
{
MSG *msg = static_cast<MSG *>(message);
bool filterOut = false;
QEvent *event = 0;
QWindow *window = 0;
switch (msg->message) {
case WM_DWMCOLORIZATIONCOLORCHANGED :
event = new QWinColorizationChangeEvent(msg->wParam, msg->lParam);
break;
case WM_DWMCOMPOSITIONCHANGED :
event = new QWinCompositionChangeEvent(QtWin::isCompositionEnabled());
break;
case WM_THEMECHANGED :
event = new QWinEvent(QWinEvent::ThemeChange);
break;
default :
if (tbButtonCreatedMsgId == msg->message) {
event = new QWinEvent(QWinEvent::TaskbarButtonCreated);
filterOut = true;
}
break;
}
if (event) {
window = findWindow(msg->hwnd);
if (window)
QCoreApplication::sendEvent(window, event);
delete event;
}
if (filterOut && result) {
*result = 0;
}
return filterOut;
}
void QWinEventFilter::setup()
{
if (!instance) {
instance = new QWinEventFilter;
qApp->installNativeEventFilter(instance);
}
}
QWindow *QWinEventFilter::findWindow(HWND handle)
{
const WId wid = reinterpret_cast<WId>(handle);
foreach (QWindow *topLevel, QGuiApplication::topLevelWindows()) {
if (topLevel->handle() && topLevel->winId() == wid)
return topLevel;
}
return Q_NULLPTR;
}
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