From 20d6dac63c25d227ed5315801e3e853ee78ec248 Mon Sep 17 00:00:00 2001
From: Andre de la Rocha <andre.rocha@qt.io>
Date: Fri, 25 May 2018 14:48:03 +0200
Subject: Add Windows Pointer Input Messages support

Replaces the handling of tablet/touchscreen/touchpad/mouse input with a
unified implementation based on the Windows Pointer Input Messages added
to Windows 8. The legacy implementation is still used for Windows 7.

Task-number: QTBUG-60437
Change-Id: I0a0f48ee9d5365f84ba528aa04c6ab1fe4253c50
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
---
 .../platforms/windows/qwindowspointerhandler.h     | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 src/plugins/platforms/windows/qwindowspointerhandler.h

(limited to 'src/plugins/platforms/windows/qwindowspointerhandler.h')

diff --git a/src/plugins/platforms/windows/qwindowspointerhandler.h b/src/plugins/platforms/windows/qwindowspointerhandler.h
new file mode 100644
index 0000000000..11bc9419d7
--- /dev/null
+++ b/src/plugins/platforms/windows/qwindowspointerhandler.h
@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWINDOWSPOINTERHANDLER_H
+#define QWINDOWSPOINTERHANDLER_H
+
+#include "qtwindowsglobal.h"
+#include <QtCore/qt_windows.h>
+
+#include <QtCore/qpointer.h>
+#include <QtCore/qscopedpointer.h>
+#include <QtCore/qhash.h>
+
+QT_BEGIN_NAMESPACE
+
+class QWindow;
+class QTouchDevice;
+
+class QWindowsPointerHandler
+{
+    Q_DISABLE_COPY(QWindowsPointerHandler)
+public:
+    QWindowsPointerHandler() = default;
+    bool translatePointerEvent(QWindow *window, HWND hwnd, QtWindows::WindowsEventType et, MSG msg, LRESULT *result);
+    bool translateMouseEvent(QWindow *window, HWND hwnd, QtWindows::WindowsEventType et, MSG msg, LRESULT *result);
+    QTouchDevice *touchDevice() const { return m_touchDevice.data(); }
+    QTouchDevice *ensureTouchDevice();
+    Qt::MouseButtons queryMouseButtons();
+    QWindow *windowUnderMouse() const { return m_windowUnderPointer.data(); }
+    void clearWindowUnderMouse() { m_windowUnderPointer = nullptr; }
+
+private:
+    bool translateMouseTouchPadEvent(QWindow *window, HWND hwnd, QtWindows::WindowsEventType et, MSG msg, PVOID vPointerInfo);
+    bool translateTouchEvent(QWindow *window, HWND hwnd, QtWindows::WindowsEventType et, MSG msg, PVOID vTouchInfo, unsigned int count);
+    bool translatePenEvent(QWindow *window, HWND hwnd, QtWindows::WindowsEventType et, MSG msg, PVOID vPenInfo);
+
+    QScopedPointer<QTouchDevice> m_touchDevice;
+    QHash<int, QPointF> m_lastTouchPositions;
+    QPointer<QWindow> m_windowUnderPointer;
+    QPointer<QWindow> m_currentWindow;
+    bool m_needsEnterOnPointerUpdate = false;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWINDOWSPOINTERHANDLER_H
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