Doc: Add docs for SimpleKeyboard example

Fixes: QDS-4140
Change-Id: Icf1da91512848881914ac4c44e47ecc6e5bc3903
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

doc/qtdesignstudio/config/qtdesignstudio.qdocconf

@@ -90,6 +90,7 @@ depends +=    qtwidgets \
               qtsensors \
               qttestlib \
               qtuitools \
+              qtvirtualkeyboard \
               qtxml
 
 include(../../config/macros.qdocconf)

doc/qtdesignstudio/examples/SimpleKeyboard/SimpleKeyboard.qml

@@ -0,0 +1,118 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Design Studio.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 2.15
+import SimpleKeyboard 1.0
+import QtQuick.VirtualKeyboard 2.15
+import QtQuick.Window 2.2
+
+Window {
+    id: window
+    width: Constants.width
+    height: Constants.height
+    Item {
+        id: cornerItem
+        x: 0
+        y: 0
+    }
+
+    property int activeFocusItemBottom : activeFocusItem == null ? 0 : Math.min(height, cornerItem.mapFromItem(activeFocusItem, 0, activeFocusItem.height).y + 50)
+
+    Swiper {
+        id: view
+        width: window.width
+        height: window.height
+        y: !inputPanel.active ? 0 : Math.min(0, window.height - inputPanel.height - activeFocusItemBottom)
+        Behavior on y {
+            NumberAnimation {
+                duration: 250
+                easing.type: Easing.InOutQuad
+            }
+        }
+    }
+
+    Rectangle {
+        id: inputPanelBackground
+        anchors.left: parent.left
+        anchors.right: parent.right
+        anchors.top: inputPanel.top
+        anchors.bottom: inputPanel.bottom
+        color: "black"
+    }
+
+    InputPanel {
+        id: inputPanel
+        x: window.width/2 - width/2
+        y: window.height
+        width: Math.min(window.width, window.height)
+
+        states: State {
+            name: "visible"
+            when: inputPanel.active
+            PropertyChanges {
+                target: inputPanel
+                y: window.height - inputPanel.height
+            }
+        }
+        transitions: Transition {
+            from: ""
+            to: "visible"
+            reversible: true
+            ParallelAnimation {
+                NumberAnimation {
+                    properties: "y"
+                    duration: 250
+                    easing.type: Easing.InOutQuad
+                }
+            }
+        }
+    }
+}
+

doc/qtdesignstudio/examples/SimpleKeyboard/SimpleKeyboard.qmlproject

@@ -0,0 +1,45 @@
+import QmlProject 1.1
+
+Project {
+    mainFile: "SimpleKeyboard.qml"
+
+    /* Include .qml, .js, and image files from current directory and subdirectories */
+    QmlFiles {
+        directory: "."
+    }
+
+    JavaScriptFiles {
+        directory: "."
+    }
+
+    ImageFiles {
+        directory: "."
+    }
+
+    Files {
+        filter: "*.conf"
+        files: ["qtquickcontrols2.conf"]
+    }
+
+    Files {
+        filter: "qmldir"
+        directory: "."
+    }
+
+    Files {
+        filter: "*.ttf;*.otf"
+    }
+
+    Environment {
+        QT_QUICK_CONTROLS_CONF: "qtquickcontrols2.conf"
+        QT_AUTO_SCREEN_SCALE_FACTOR: "1"
+        QT_IM_MODULE: "qtvirtualkeyboard"
+        QT_VIRTUALKEYBOARD_DESKTOP_DISABLE: 1
+    }
+
+    /* List of plugin directories passed to QML runtime */
+    importPaths: [ "imports", "asset_imports" ]
+
+    /* Required for deployment */
+    targetDirectory: "/opt/SimpleKeyboard"
+}

doc/qtdesignstudio/examples/doc/simplekeyboard.qdoc

@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Design Studio documentation.
+**
+** 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 Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
+**
+****************************************************************************/
+
+/*!
+    \example SimpleKeyboard
+    \ingroup studioexamples
+    \brief Illustrates how to use a virtual keyboard in an application.
+
+    \title Simple Keyboard
+
+    \e {Simple Keyboard} provides a virtual keyboard for entering
+    text into several text fields. It uses functionality from the
+    \l{Qt Virtual Keyboard} module.
+
+    \image simplekeyboard.png "Virtual keyboard opening from a text input field"
+
+    The virtual keyboard is automatically displayed when users start entering
+    text into \l{Text Edit} or \l{Text Input} components. For more information
+    about using it, see \l{User Guide}{Virtual Keyboard: User Guide}.
+
+    To test the virtual keyboard, you need to select the \inlineimage run_small.png
+    (\uicontrol Run) button to run the example on the desktop or a device.
+    The keyboard is not available during preview.
+
+    \section1 Using a Virtual Keyboard
+
+    First, we create an empty project, as described in \l {Creating Projects}.
+    For the purposes of this example, we call the project \e SimpleKeyboard.
+    We can use the default settings for other options, but we need to select
+    the \uicontrol {Use Qt Virtual Keyboard} check box on the
+    \uicontrol {Define Project Details} page.
+
+    \image simplekeyboard-project-details.png "SimpleKeyboard project details"
+
+    The project wizard template adds the Qt Quick Virtual Keyboard module
+    to the project and creates a component based on \l InputPanel in
+    \e SimpleKeyboard.qml.
+
+    \image simplekeyboard-component.png "SimpleKeyboard component"
+
+    We then create a tabbed UI that contains fields for entering text, among
+    other things. The virtual keyboard is automatically enabled for the text
+    edit and text input controls.
+*/