From b24a6419869c14e32e87cb97e529cc25c246b5e0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCri=20Valdmann?= <juri.valdmann@qt.io>
Date: Wed, 5 Apr 2017 17:14:16 +0200
Subject: Create example for full screen feature in WebEngine

Adds an example ('videoplayer') showing how to enable the Fullscreen
API[1] in QWebEngineView. This is one of the missing examples blocking
the removal of demobrowser.

[1]: https://fullscreen.spec.whatwg.org

Task-number: QTBUG-59820
Change-Id: Ib02a1556515d87e595ca54c2bce18c9144030fbc
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Michal Klocek <michal.klocek@qt.io>
---
 .../videoplayer/fullscreennotification.cpp         | 87 ++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 examples/webenginewidgets/videoplayer/fullscreennotification.cpp

(limited to 'examples/webenginewidgets/videoplayer/fullscreennotification.cpp')

diff --git a/examples/webenginewidgets/videoplayer/fullscreennotification.cpp b/examples/webenginewidgets/videoplayer/fullscreennotification.cpp
new file mode 100644
index 000000000..e65e2cbad
--- /dev/null
+++ b/examples/webenginewidgets/videoplayer/fullscreennotification.cpp
@@ -0,0 +1,87 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "fullscreennotification.h"
+
+#include <QGraphicsOpacityEffect>
+#include <QPropertyAnimation>
+#include <QSequentialAnimationGroup>
+
+FullScreenNotification::FullScreenNotification(QWidget *parent)
+    : QLabel(parent)
+    , m_previouslyVisible(false)
+{
+    setText(tr("You are now in full screen mode. Press ESC to quit!"));
+    setStyleSheet(
+        "font-size: 24px;"
+        "color: white;"
+        "background-color: black;"
+        "border-color: white;"
+        "border-width: 2px;"
+        "border-style: solid;"
+        "padding: 100px");
+    setAttribute(Qt::WA_TransparentForMouseEvents);
+
+    auto effect = new QGraphicsOpacityEffect;
+    effect->setOpacity(1);
+    setGraphicsEffect(effect);
+
+    auto animations = new QSequentialAnimationGroup(this);
+    animations->addPause(3000);
+    auto opacityAnimation = new QPropertyAnimation(effect, "opacity", animations);
+    opacityAnimation->setDuration(2000);
+    opacityAnimation->setStartValue(1.0);
+    opacityAnimation->setEndValue(0.0);
+    opacityAnimation->setEasingCurve(QEasingCurve::OutQuad);
+    animations->addAnimation(opacityAnimation);
+
+    connect(this, &FullScreenNotification::shown,
+            [animations](){ animations->start(); });
+
+    connect(animations, &QAbstractAnimation::finished,
+            [this](){ this->hide(); });
+}
+
+void FullScreenNotification::showEvent(QShowEvent *event)
+{
+    QLabel::showEvent(event);
+    if (!m_previouslyVisible && isVisible())
+        emit shown();
+    m_previouslyVisible = isVisible();
+}
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