1 files changed, 112 insertions, 0 deletions
diff --git a/src/quicktemplates/qquickpresshandler.cpp b/src/quicktemplates/qquickpresshandler.cpp
new file mode 100644
index 0000000000..fc569a81ca
--- /dev/null
+++ b/src/quicktemplates/qquickpresshandler.cpp
@@ -0,0 +1,112 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#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 = std::make_unique<QMouseEvent>(event->type(), event->position().toPoint(), event->globalPosition().toPoint(),
+                                                 event->button(), event->buttons(), event->modifiers(), event->pointingDevice());
+    } 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()
+{
+    delayedMousePressEvent.reset();
+}
+
+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