diff options
| -rw-r--r-- | src/quick/handlers/handlers.pri | 2 | ||||
| -rw-r--r-- | src/quick/handlers/qquickpointersinglehandler.cpp | 105 | ||||
| -rw-r--r-- | src/quick/handlers/qquickpointersinglehandler_p.h | 83 |
3 files changed, 190 insertions, 0 deletions
diff --git a/src/quick/handlers/handlers.pri b/src/quick/handlers/handlers.pri index 2eed3855d3..c91b259107 100644 --- a/src/quick/handlers/handlers.pri +++ b/src/quick/handlers/handlers.pri @@ -1,9 +1,11 @@ HEADERS += \ $$PWD/qquickpointerhandler_p.h \ $$PWD/qquickpointerdevicehandler_p.h \ + $$PWD/qquickpointersinglehandler_p.h \ $$PWD/qquickhandlersmodule_p.h \ SOURCES += \ $$PWD/qquickpointerhandler.cpp \ $$PWD/qquickpointerdevicehandler.cpp \ + $$PWD/qquickpointersinglehandler.cpp \ $$PWD/qquickhandlersmodule.cpp \ diff --git a/src/quick/handlers/qquickpointersinglehandler.cpp b/src/quick/handlers/qquickpointersinglehandler.cpp new file mode 100644 index 0000000000..135726105b --- /dev/null +++ b/src/quick/handlers/qquickpointersinglehandler.cpp @@ -0,0 +1,105 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQuick module 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 "qquickpointersinglehandler_p.h" + +QT_BEGIN_NAMESPACE + +/*! + An intermediate class (not registered as a QML type) + for the most common handlers: those which expect only a single point. + wantsPointerEvent() will choose the first point which is inside the + \l target item, and return true as long as the event contains that point. + Override handleEventPoint() to implement a single-point handler. +*/ + +QQuickPointerSingleHandler::QQuickPointerSingleHandler(QObject *parent) + : QQuickPointerDeviceHandler(parent) + , m_currentPoint(nullptr) + , m_currentPointId(0) +{ +} + +bool QQuickPointerSingleHandler::wantsPointerEvent(QQuickPointerEvent *event) +{ + if (!QQuickPointerDeviceHandler::wantsPointerEvent(event)) + return false; + int c = event->pointCount(); + for (int i = 0; i < c; ++i) { + QQuickEventPoint *p = event->point(i); + if (m_currentPointId) { + if (m_currentPointId == p->pointId()) { + m_currentPoint = p; + return true; + } + } else { + if (p->grabber()) { + if (p->grabber() == target()) + setCurrentPoint(p); + else + continue; + } else { + if (targetContains(p)) + setCurrentPoint(p); + } + if (m_currentPoint) + return true; + } + } + // If we didn't return yet, there are no interesting points + setCurrentPoint(nullptr); + return false; +} + +void QQuickPointerSingleHandler::handlePointerEventImpl(QQuickPointerEvent *event) +{ + QQuickPointerDeviceHandler::handlePointerEventImpl(event); + handleEventPoint(m_currentPoint); + // If the point is released or was rejected, this handler is done handling that point. + if (m_currentPoint->state() == QQuickEventPoint::Released || !m_currentPoint->grabber()) + setCurrentPoint(nullptr); +} + +void QQuickPointerSingleHandler::setCurrentPoint(QQuickEventPoint *p) +{ + m_currentPoint = p; + m_currentPointId = p ? p->pointId() : 0; +} + +QT_END_NAMESPACE diff --git a/src/quick/handlers/qquickpointersinglehandler_p.h b/src/quick/handlers/qquickpointersinglehandler_p.h new file mode 100644 index 0000000000..c05a5cfc62 --- /dev/null +++ b/src/quick/handlers/qquickpointersinglehandler_p.h @@ -0,0 +1,83 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQuick module 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 QQUICKPOINTERSINGLEHANDLER_H +#define QQUICKPOINTERSINGLEHANDLER_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include "qquickpointerdevicehandler_p.h" + +QT_BEGIN_NAMESPACE + +class Q_QUICK_PRIVATE_EXPORT QQuickPointerSingleHandler : public QQuickPointerDeviceHandler +{ + Q_OBJECT + +public: + QQuickPointerSingleHandler(QObject *parent = 0); + virtual ~QQuickPointerSingleHandler() { } + +protected: + bool wantsPointerEvent(QQuickPointerEvent *event) Q_DECL_OVERRIDE; + void handlePointerEventImpl(QQuickPointerEvent *event) Q_DECL_OVERRIDE; + virtual void handleEventPoint(QQuickEventPoint *point) = 0; + +private: + void setCurrentPoint(QQuickEventPoint *p); + +private: + QQuickEventPoint *m_currentPoint; + quint64 m_currentPointId; +}; + +QT_END_NAMESPACE + +QML_DECLARE_TYPE(QQuickPointerSingleHandler) + +#endif // QQUICKPOINTERSINGLEHANDLER_H |