Add an AnimatedImage example

This provides a way of testing the new speed property too.
The animated GIF comes from
https://en.wikipedia.org/wiki/Uniflow_steam_engine

Task-number: QTBUG-62203
Change-Id: I1df118e79d9c7451c2fbf712b1ab4eb0656e4cc7
Reviewed-by: Louis du Verdier <louis.du.verdier@free.fr>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

4 files changed, 119 insertions, 0 deletions

diff --git a/examples/quick/imageelements/animatedimage.qml b/examples/quick/imageelements/animatedimage.qml
new file mode 100644
index 0000000000..cd83e5dd20
--- /dev/null
+++ b/examples/quick/imageelements/animatedimage.qml
@@ -0,0 +1,116 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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.
+**
+** BSD License Usage
+** Alternatively, 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+import QtQuick 2.11
+import Qt.labs.handlers 1.0
+import "../shared" as Examples
+
+Column {
+    width: 320
+    height: 480
+    spacing: 6
+    y: 12
+
+//! [image]
+    AnimatedImage {
+        id: animation
+        source: "content/Uniflow_steam_engine.gif"
+        anchors.horizontalCenter: parent.horizontalCenter
+        speed: speedSlider.value
+        TapHandler {
+            onTapped: animation.playing = !animation.playing
+        }
+    }
+//! [image]
+
+    Rectangle {
+        id: timeline
+        color: "steelblue"
+        width: animation.width
+        height: 1
+        x: animation.x
+        y: animation.height + 12
+        visible: animation.playing
+
+        Rectangle {
+            property int frames: animation.frameCount
+            width: 4; height: 8
+            x: (animation.width - width) * animation.currentFrame / frames
+            y: -4
+            color: "red"
+        }
+    }
+
+    Examples.Slider {
+        id: speedSlider
+        name: "Speed"
+        min: 0.05
+        max: 5
+        init: 1
+        width: 240
+        x: animation.x
+        Text {
+            font.pointSize: 12
+            text: Math.round(animation.speed * 100) + "%"
+            x: animation.width - width
+            anchors.verticalCenter: parent.verticalCenter
+            anchors.margins: 6
+        }
+    }
+
+    Examples.Button {
+        text: "Reset"
+        enabled: speedSlider.value !== 1
+        anchors.horizontalCenter: parent.horizontalCenter
+        onClicked: {
+            speedSlider.setValue(1)
+            animation.playing = true
+        }
+    }
+}
diff --git a/examples/quick/imageelements/content/Uniflow_steam_engine.gif b/examples/quick/imageelements/content/Uniflow_steam_engine.gif
new file mode 100644
index 0000000000..8754de4af9
--- /dev/null
+++ b/examples/quick/imageelements/content/Uniflow_steam_engine.gif
diff --git a/examples/quick/imageelements/imageelements.qml b/examples/quick/imageelements/imageelements.qml
index e0eb503ecf..dfb4d24ea6 100644
--- a/examples/quick/imageelements/imageelements.qml
+++ b/examples/quick/imageelements/imageelements.qml
@@ -61,6 +61,7 @@ Item {
             addExample("BorderImage", "An image with scaled borders",  Qt.resolvedUrl("borderimage.qml"));
             addExample("Image", "A showcase of the options available to Image", Qt.resolvedUrl("image.qml"));
             addExample("Shadows", "Rectangles with a drop-shadow effect", Qt.resolvedUrl("shadows.qml"));
+            addExample("AnimatedImage", "An image which plays animated formats", Qt.resolvedUrl("animatedimage.qml"));
             addExample("AnimatedSprite", "A simple sprite-based animation", Qt.resolvedUrl("animatedsprite.qml"));
             addExample("SpriteSequence", "A sprite-based animation with complex transitions", Qt.resolvedUrl("spritesequence.qml"));
         }
diff --git a/examples/quick/imageelements/imageelements.qrc b/examples/quick/imageelements/imageelements.qrc
index ef8a9e52cb..2488fb083b 100644
--- a/examples/quick/imageelements/imageelements.qrc
+++ b/examples/quick/imageelements/imageelements.qrc
@@ -13,7 +13,9 @@
         <file>content/shadow.png</file>
         <file>content/ShadowRectangle.qml</file>
         <file>content/speaker.png</file>
+        <file>content/Uniflow_steam_engine.gif</file>
         <file>imageelements.qml</file>
+        <file>animatedimage.qml</file>
         <file>animatedsprite.qml</file>
         <file>borderimage.qml</file>
         <file>image.qml</file>