diff options
Diffstat (limited to 'src/quicktemplates2/qquickpresshandler.cpp')
-rw-r--r-- | src/quicktemplates2/qquickpresshandler.cpp | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/src/quicktemplates2/qquickpresshandler.cpp b/src/quicktemplates2/qquickpresshandler.cpp new file mode 100644 index 0000000000..d9ed484be9 --- /dev/null +++ b/src/quicktemplates2/qquickpresshandler.cpp @@ -0,0 +1,147 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** 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 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPLv3 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.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 later as published by the Free +** Software Foundation and appearing in the file LICENSE.GPL included in +** the packaging of this file. Please review the following information to +** ensure the GNU General Public License version 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qquickpresshandler_p_p.h" + +#include <QtCore/private/qobject_p.h> +#include <QtGui/qguiapplication.h> +#include <QtGui/qstylehints.h> +#include <QtQuick/qquickitem.h> +#include <QtQuick/private/qquickevents_p_p.h> +#include <QtQuickTemplates2/private/qquicktextarea_p.h> +#include <QtQuickTemplates2/private/qquicktextfield_p.h> + +QT_BEGIN_NAMESPACE + +void QQuickPressHandler::mousePressEvent(QMouseEvent *event) +{ + longPress = false; + pressPos = event->position(); + if (Qt::LeftButton == (event->buttons() & Qt::LeftButton)) { + timer.start(QGuiApplication::styleHints()->mousePressAndHoldInterval(), control); + delayedMousePressEvent = new QMouseEvent(event->type(), event->position().toPoint(), event->button(), event->buttons(), event->modifiers()); + } else { + timer.stop(); + } + + if (isSignalConnected(control, "pressed(QQuickMouseEvent*)", pressedSignalIndex)) { + QQuickMouseEvent mev; + mev.reset(pressPos.x(), pressPos.y(), event->button(), event->buttons(), + event->modifiers(), false/*isClick*/, false/*wasHeld*/); + mev.setAccepted(true); + QQuickMouseEvent *mevPtr = &mev; + void *args[] = { nullptr, &mevPtr }; + QMetaObject::metacall(control, QMetaObject::InvokeMetaMethod, pressedSignalIndex, args); + event->setAccepted(mev.isAccepted()); + } +} + +void QQuickPressHandler::mouseMoveEvent(QMouseEvent *event) +{ + if (qAbs(int(event->position().x() - pressPos.x())) > QGuiApplication::styleHints()->startDragDistance()) + timer.stop(); +} + +void QQuickPressHandler::mouseReleaseEvent(QMouseEvent *event) +{ + if (!longPress) { + timer.stop(); + + if (isSignalConnected(control, "released(QQuickMouseEvent*)", releasedSignalIndex)) { + QQuickMouseEvent mev; + mev.reset(pressPos.x(), pressPos.y(), event->button(), event->buttons(), + event->modifiers(), false/*isClick*/, false/*wasHeld*/); + mev.setAccepted(true); + QQuickMouseEvent *mevPtr = &mev; + void *args[] = { nullptr, &mevPtr }; + QMetaObject::metacall(control, QMetaObject::InvokeMetaMethod, releasedSignalIndex, args); + event->setAccepted(mev.isAccepted()); + } + } +} + +void QQuickPressHandler::timerEvent(QTimerEvent *) +{ + timer.stop(); + clearDelayedMouseEvent(); + + longPress = isSignalConnected(control, "pressAndHold(QQuickMouseEvent*)", pressAndHoldSignalIndex); + if (longPress) { + QQuickMouseEvent mev; +QT_WARNING_PUSH +QT_WARNING_DISABLE_DEPRECATED + mev.reset(pressPos.x(), pressPos.y(), Qt::LeftButton, Qt::LeftButton, + QGuiApplication::keyboardModifiers(), false/*isClick*/, true/*wasHeld*/); +QT_WARNING_POP + mev.setAccepted(true); + // Use fast signal invocation since we already got its index + QQuickMouseEvent *mevPtr = &mev; + void *args[] = { nullptr, &mevPtr }; + QMetaObject::metacall(control, QMetaObject::InvokeMetaMethod, pressAndHoldSignalIndex, args); + if (!mev.isAccepted()) + longPress = false; + } +} + +void QQuickPressHandler::clearDelayedMouseEvent() +{ + if (delayedMousePressEvent) { + delete delayedMousePressEvent; + delayedMousePressEvent = 0; + } +} + +bool QQuickPressHandler::isActive() +{ + return !(timer.isActive() || longPress); +} + +bool QQuickPressHandler::isSignalConnected(QQuickItem *item, const char *signalName, int &signalIndex) +{ + if (signalIndex == -1) + signalIndex = item->metaObject()->indexOfSignal(signalName); + Q_ASSERT(signalIndex != -1); + const auto signalMetaMethod = item->metaObject()->method(signalIndex); + if (QQuickTextArea *textArea = qobject_cast<QQuickTextArea*>(item)) { + return textArea->isSignalConnected(signalMetaMethod); + } else if (QQuickTextField *textField = qobject_cast<QQuickTextField*>(item)) { + return textField->isSignalConnected(signalMetaMethod); + } + qFatal("Unhandled control type for signal name: %s", signalName); + return false; +} + +QT_END_NAMESPACE |