Doc: Update examples used in Writing QML Extensions tutorial

Update the examples to use Qt's resource file system to
store the qml files in, enabling them to run unmodified
in any platform/build configuration.

Also,
    - Chapter 6: Move the plugin code to a subproject
      and create a C++ application to use the plugin
    - Update documentation related to above chapter
    - Add thumbnails for the examples so they will
      appear in Qt Creators example list.

Task-number: QTBUG-35001
Change-Id: I29122af11bb11c7e5e17993438e5fc18c7f96f89
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

8 files changed, 437 insertions, 0 deletions

diff --git a/examples/qml/tutorials/extending/chapter6-plugins/import/chartsplugin.cpp b/examples/qml/tutorials/extending/chapter6-plugins/import/chartsplugin.cpp
new file mode 100644
index 0000000000..fea4c1aa85
--- /dev/null
+++ b/examples/qml/tutorials/extending/chapter6-plugins/import/chartsplugin.cpp
@@ -0,0 +1,53 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation 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 Digia Plc and its Subsidiary(-ies) 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 "chartsplugin.h"
+//![0]
+#include "piechart.h"
+#include "pieslice.h"
+#include <qqml.h>
+
+void ChartsPlugin::registerTypes(const char *uri)
+{
+    qmlRegisterType<PieChart>(uri, 1, 0, "PieChart");
+    qmlRegisterType<PieSlice>(uri, 1, 0, "PieSlice");
+}
+
+//![0]
+
diff --git a/examples/qml/tutorials/extending/chapter6-plugins/import/chartsplugin.h b/examples/qml/tutorials/extending/chapter6-plugins/import/chartsplugin.h
new file mode 100644
index 0000000000..d768306967
--- /dev/null
+++ b/examples/qml/tutorials/extending/chapter6-plugins/import/chartsplugin.h
@@ -0,0 +1,57 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation 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 Digia Plc and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef CHARTSPLUGIN_H
+#define CHARTSPLUGIN_H
+
+//![0]
+#include <QQmlExtensionPlugin>
+
+class ChartsPlugin : public QQmlExtensionPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QQmlExtensionInterface")
+
+public:
+    void registerTypes(const char *uri);
+};
+//![0]
+
+#endif
+
diff --git a/examples/qml/tutorials/extending/chapter6-plugins/import/import.pro b/examples/qml/tutorials/extending/chapter6-plugins/import/import.pro
new file mode 100644
index 0000000000..83cfb96ab5
--- /dev/null
+++ b/examples/qml/tutorials/extending/chapter6-plugins/import/import.pro
@@ -0,0 +1,26 @@
+TEMPLATE = lib
+CONFIG += plugin
+QT += qml quick
+
+DESTDIR = ../Charts
+TARGET = $$qtLibraryTarget(chartsplugin)
+
+HEADERS += piechart.h \
+           pieslice.h \
+           chartsplugin.h
+
+SOURCES += piechart.cpp \
+           pieslice.cpp \
+           chartsplugin.cpp
+
+DESTPATH=$$[QT_INSTALL_EXAMPLES]/qml/tutorials/extending/chapter6-plugins/Charts
+
+target.path=$$DESTPATH
+qmldir.files=$$PWD/qmldir
+qmldir.path=$$DESTPATH
+INSTALLS += target qmldir
+
+OTHER_FILES += qmldir
+
+# Copy the qmldir file to the same folder as the plugin binary
+QMAKE_POST_LINK += $$QMAKE_COPY $$replace($$list($$quote($$PWD/qmldir) $$DESTDIR), /, $$QMAKE_DIR_SEP)
diff --git a/examples/qml/tutorials/extending/chapter6-plugins/import/piechart.cpp b/examples/qml/tutorials/extending/chapter6-plugins/import/piechart.cpp
new file mode 100644
index 0000000000..295bb8961d
--- /dev/null
+++ b/examples/qml/tutorials/extending/chapter6-plugins/import/piechart.cpp
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation 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 Digia Plc and its Subsidiary(-ies) 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 "piechart.h"
+#include "pieslice.h"
+
+PieChart::PieChart(QQuickItem *parent)
+    : QQuickItem(parent)
+{
+}
+
+QString PieChart::name() const
+{
+    return m_name;
+}
+
+void PieChart::setName(const QString &name)
+{
+    m_name = name;
+}
+
+QQmlListProperty<PieSlice> PieChart::slices()
+{
+    return QQmlListProperty<PieSlice>(this, 0, &PieChart::append_slice, 0, 0, 0);
+}
+
+void PieChart::append_slice(QQmlListProperty<PieSlice> *list, PieSlice *slice)
+{
+    PieChart *chart = qobject_cast<PieChart *>(list->object);
+    if (chart) {
+        slice->setParentItem(chart);
+        chart->m_slices.append(slice);
+    }
+}
diff --git a/examples/qml/tutorials/extending/chapter6-plugins/import/piechart.h b/examples/qml/tutorials/extending/chapter6-plugins/import/piechart.h
new file mode 100644
index 0000000000..b37bcdd411
--- /dev/null
+++ b/examples/qml/tutorials/extending/chapter6-plugins/import/piechart.h
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation 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 Digia Plc and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef PIECHART_H
+#define PIECHART_H
+
+#include <QtQuick/QQuickItem>
+
+class PieSlice;
+
+class PieChart : public QQuickItem
+{
+    Q_OBJECT
+    Q_PROPERTY(QQmlListProperty<PieSlice> slices READ slices)
+    Q_PROPERTY(QString name READ name WRITE setName)
+
+public:
+    PieChart(QQuickItem *parent = 0);
+
+    QString name() const;
+    void setName(const QString &name);
+
+    QQmlListProperty<PieSlice> slices();
+
+private:
+    static void append_slice(QQmlListProperty<PieSlice> *list, PieSlice *slice);
+
+    QString m_name;
+    QList<PieSlice *> m_slices;
+};
+
+#endif
+
diff --git a/examples/qml/tutorials/extending/chapter6-plugins/import/pieslice.cpp b/examples/qml/tutorials/extending/chapter6-plugins/import/pieslice.cpp
new file mode 100644
index 0000000000..52b409aa22
--- /dev/null
+++ b/examples/qml/tutorials/extending/chapter6-plugins/import/pieslice.cpp
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation 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 Digia Plc and its Subsidiary(-ies) 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 "pieslice.h"
+
+#include <QPainter>
+
+PieSlice::PieSlice(QQuickItem *parent)
+    : QQuickPaintedItem(parent)
+{
+}
+
+QColor PieSlice::color() const
+{
+    return m_color;
+}
+
+void PieSlice::setColor(const QColor &color)
+{
+    m_color = color;
+}
+
+int PieSlice::fromAngle() const
+{
+    return m_fromAngle;
+}
+
+void PieSlice::setFromAngle(int angle)
+{
+    m_fromAngle = angle;
+}
+
+int PieSlice::angleSpan() const
+{
+    return m_angleSpan;
+}
+
+void PieSlice::setAngleSpan(int angle)
+{
+    m_angleSpan = angle;
+}
+
+void PieSlice::paint(QPainter *painter)
+{
+    QPen pen(m_color, 2);
+    painter->setPen(pen);
+    painter->setRenderHints(QPainter::Antialiasing, true);
+    painter->drawPie(boundingRect().adjusted(1, 1, -1, -1), m_fromAngle * 16, m_angleSpan * 16);
+}
+
diff --git a/examples/qml/tutorials/extending/chapter6-plugins/import/pieslice.h b/examples/qml/tutorials/extending/chapter6-plugins/import/pieslice.h
new file mode 100644
index 0000000000..0b488b4835
--- /dev/null
+++ b/examples/qml/tutorials/extending/chapter6-plugins/import/pieslice.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation 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 Digia Plc and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef PIESLICE_H
+#define PIESLICE_H
+
+#include <QtQuick/QQuickPaintedItem>
+#include <QColor>
+
+class PieSlice : public QQuickPaintedItem
+{
+    Q_OBJECT
+    Q_PROPERTY(QColor color READ color WRITE setColor)
+    Q_PROPERTY(int fromAngle READ fromAngle WRITE setFromAngle)
+    Q_PROPERTY(int angleSpan READ angleSpan WRITE setAngleSpan)
+
+public:
+    PieSlice(QQuickItem *parent = 0);
+
+    QColor color() const;
+    void setColor(const QColor &color);
+
+    int fromAngle() const;
+    void setFromAngle(int angle);
+
+    int angleSpan() const;
+    void setAngleSpan(int span);
+
+    void paint(QPainter *painter);
+
+private:
+    QColor m_color;
+    int m_fromAngle;
+    int m_angleSpan;
+};
+
+#endif
+
diff --git a/examples/qml/tutorials/extending/chapter6-plugins/import/qmldir b/examples/qml/tutorials/extending/chapter6-plugins/import/qmldir
new file mode 100644
index 0000000000..d9e8471b3c
--- /dev/null
+++ b/examples/qml/tutorials/extending/chapter6-plugins/import/qmldir
@@ -0,0 +1,2 @@
+module Charts
+plugin chartsplugin