summaryrefslogtreecommitdiffstats
path: root/examples/widgets
diff options
context:
space:
mode:
authorNico Vertriest <nico.vertriest@digia.com>2014-01-23 16:10:26 +0100
committerThe Qt Project <gerrit-noreply@qt-project.org>2014-01-31 16:18:07 +0100
commit0b26ad05bbadeef493317c994cc7ccb53b0a612c (patch)
treec6d790f47b7a6887fd3341bdda331e02f6a03d99 /examples/widgets
parent14addd2cbbb013a256a2c59d9a5b3ac8ca951e0d (diff)
Doc: corrected link/example errors
Update pro files after move gestures folder Update snippet statements Corrected path in imagegestures.pro Task-number: QTBUG-34749 Change-Id: Icc19908914e36507e412ab63bf0cc2809aa48e17 Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Diffstat (limited to 'examples/widgets')
-rw-r--r--examples/widgets/doc/src/plugandpaint.qdoc8
-rw-r--r--examples/widgets/gestures/gestures.pro6
-rw-r--r--examples/widgets/gestures/imagegestures/doc/src/imagegestures.qdoc100
-rw-r--r--examples/widgets/gestures/imagegestures/imagegestures.pro12
-rw-r--r--examples/widgets/gestures/imagegestures/imagewidget.cpp267
-rw-r--r--examples/widgets/gestures/imagegestures/imagewidget.h100
-rw-r--r--examples/widgets/gestures/imagegestures/main.cpp58
-rw-r--r--examples/widgets/gestures/imagegestures/mainwidget.cpp55
-rw-r--r--examples/widgets/gestures/imagegestures/mainwidget.h64
-rw-r--r--examples/widgets/widgets.pro1
10 files changed, 667 insertions, 4 deletions
diff --git a/examples/widgets/doc/src/plugandpaint.qdoc b/examples/widgets/doc/src/plugandpaint.qdoc
index 5098d892ef..4e48245bd9 100644
--- a/examples/widgets/doc/src/plugandpaint.qdoc
+++ b/examples/widgets/doc/src/plugandpaint.qdoc
@@ -316,7 +316,7 @@
\title Plug & Paint Basic Tools Example
The Basic Tools example is a static plugin for the
- \l{plugandpaint}{Plug & Paint} example. It provides a set
+ \l{tools/plugandpaint}{Plug & Paint} example. It provides a set
of basic brushes, shapes, and filters. Through the Basic Tools
example, we will review the four steps involved in writing a Qt
plugin:
@@ -333,7 +333,7 @@
\snippet tools/plugandpaintplugins/basictools/basictoolsplugin.h 0
We start by including \c interfaces.h, which defines the plugin
- interfaces for the \l{plugandpaint}{Plug & Paint}
+ interfaces for the \l{tools/plugandpaint}{Plug & Paint}
application. For the \c #include to work, we need to add an \c
INCLUDEPATH entry to the \c .pro file with the path to Qt's \c
examples/tools directory.
@@ -344,7 +344,7 @@
The \c Q_INTERFACES() macro is necessary to tell \l{moc}, Qt's
meta-object compiler, that the base classes are plugin
interfaces. Without the \c Q_INTERFACES() macro, we couldn't use
- \l qobject_cast() in the \l{plugandpaint}{Plug & Paint}
+ \l qobject_cast() in the \l{tools/plugandpaint}{Plug & Paint}
application to detect interfaces.
For an explanation for the \c Q_PLUGIN_METADATA() macro see
\l {Exporting the Plugin}.
@@ -501,7 +501,7 @@
\title Plug & Paint Extra Filters Example
The Extra Filters example is a plugin for the
- \l{plugandpaint}{Plug & Paint} example. It provides a set
+ \l{tools/plugandpaint}{Plug & Paint} example. It provides a set
of filters in addition to those provided by the
\l{tools/plugandpaintplugins/basictools}{Basic Tools} plugin.
diff --git a/examples/widgets/gestures/gestures.pro b/examples/widgets/gestures/gestures.pro
new file mode 100644
index 0000000000..ecbcf07480
--- /dev/null
+++ b/examples/widgets/gestures/gestures.pro
@@ -0,0 +1,6 @@
+requires(qtHaveModule(widgets))
+
+TEMPLATE = \
+ subdirs
+SUBDIRS = \
+ imagegestures
diff --git a/examples/widgets/gestures/imagegestures/doc/src/imagegestures.qdoc b/examples/widgets/gestures/imagegestures/doc/src/imagegestures.qdoc
new file mode 100644
index 0000000000..d6d215d6bd
--- /dev/null
+++ b/examples/widgets/gestures/imagegestures/doc/src/imagegestures.qdoc
@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/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: http://www.gnu.org/copyleft/fdl.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+ \example gestures/imagegestures
+ \title Image Gestures Example
+
+ This example shows how to enable gestures for a widget and use gesture input
+ to perform actions.
+
+ We use two classes to create the user interface for the application: \c MainWidget
+ and \c ImageWidget. The \c MainWidget class is simply used as a container for the
+ \c ImageWidget class, which we will configure to accept gesture input. Since we
+ are interested in the way gestures are used, we will concentrate on the
+ implementation of the \c ImageWidget class.
+
+ \section1 ImageWidget Class Definition
+
+ The \c ImageWidget class is a simple QWidget subclass that reimplements the general
+ QWidget::event() handler function in addition to several more specific event handlers:
+
+ \snippet gestures/imagegestures/imagewidget.h class definition begin
+ \dots
+ \snippet gestures/imagegestures/imagewidget.h class definition end
+
+ We also implement a private helper function, \c gestureEvent(), to help manage
+ gesture events delivered to the widget, and three functions to perform actions
+ based on gestures: \c panTriggered(), \c pinchTriggered() and \c swipeTriggered().
+
+ \section1 ImageWidget Class Implementation
+
+ In the widget's constructor, we begin by setting up various parameters that will
+ be used to control the way images are displayed.
+
+ \snippet gestures/imagegestures/imagewidget.cpp constructor
+
+ We enable three of the standard gestures for the widget by calling QWidget::grabGesture()
+ with the types of gesture we need. These will be recognized by the application's
+ default gesture recognizer, and events will be delivered to our widget.
+
+ Since QWidget does not define a specific event handler for gestures, the widget
+ needs to reimplement the general QWidget::event() to receive gesture events.
+
+ \snippet gestures/imagegestures/imagewidget.cpp event handler
+
+ We implement the event handler to delegate gesture events to a private function
+ specifically written for the task, and pass all other events to QWidget's
+ implementation.
+
+ The \c gestureHandler() function examines the gestures supplied by the
+ newly-delivered QGestureEvent. Since only one gesture of a given type can be
+ used on a widget at any particular time, we can check for each gesture type
+ using the QGestureEvent::gesture() function:
+
+ \snippet gestures/imagegestures/imagewidget.cpp gesture event handler
+
+ If a QGesture object is supplied for a certain type of gesture, we call a special
+ purpose function to deal with it, casting the gesture object to the appropriate
+ QGesture subclass.
+
+ To illustrate how a standard gesture can be interpreted by an application, we
+ show the implementation of the \c swipeTriggered() function, which handles the
+ gesture associated with a brushing or swiping motion on the user's display or
+ input device:
+
+ \snippet gestures/imagegestures/imagewidget.cpp swipe function
+
+ The QSwipeGesture class provides specialized functions and defines a enum
+ to make it more convenient for developers to discover which direction, if
+ any, the user swiped the display. Here, we simply navigate to the previous
+ image in the collection if the user swiped upwards or to the left; otherwise
+ we navigate to the next image in the collection.
+
+ The other gestures are also handled by special purpose functions, but use
+ the values of properties held by the QGesture object passed to them.
+*/
diff --git a/examples/widgets/gestures/imagegestures/imagegestures.pro b/examples/widgets/gestures/imagegestures/imagegestures.pro
new file mode 100644
index 0000000000..0d5b2f286c
--- /dev/null
+++ b/examples/widgets/gestures/imagegestures/imagegestures.pro
@@ -0,0 +1,12 @@
+QT += widgets
+
+HEADERS = imagewidget.h \
+ mainwidget.h
+SOURCES = imagewidget.cpp \
+ main.cpp \
+ mainwidget.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/gestures/imagegestures
+INSTALLS += target
+
diff --git a/examples/widgets/gestures/imagegestures/imagewidget.cpp b/examples/widgets/gestures/imagegestures/imagewidget.cpp
new file mode 100644
index 0000000000..aad40afc26
--- /dev/null
+++ b/examples/widgets/gestures/imagegestures/imagewidget.cpp
@@ -0,0 +1,267 @@
+
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 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 "imagewidget.h"
+
+#include <QtWidgets>
+
+//! [constructor]
+ImageWidget::ImageWidget(QWidget *parent)
+ : QWidget(parent),
+ position(0),
+ horizontalOffset(0),
+ verticalOffset(0),
+ rotationAngle(0),
+ scaleFactor(1),
+ currentStepScaleFactor(1)
+
+{
+ setMinimumSize(QSize(100,100));
+
+//! [enable gestures]
+ grabGesture(Qt::PanGesture);
+ grabGesture(Qt::PinchGesture);
+ grabGesture(Qt::SwipeGesture);
+//! [enable gestures]
+}
+//! [constructor]
+
+//! [event handler]
+bool ImageWidget::event(QEvent *event)
+{
+ if (event->type() == QEvent::Gesture)
+ return gestureEvent(static_cast<QGestureEvent*>(event));
+ return QWidget::event(event);
+}
+//! [event handler]
+
+void ImageWidget::paintEvent(QPaintEvent*)
+{
+ QPainter p(this);
+
+ float iw = currentImage.width();
+ float ih = currentImage.height();
+ float wh = height();
+ float ww = width();
+
+ p.translate(ww/2, wh/2);
+ p.translate(horizontalOffset, verticalOffset);
+ p.rotate(rotationAngle);
+ p.scale(currentStepScaleFactor * scaleFactor, currentStepScaleFactor * scaleFactor);
+ p.translate(-iw/2, -ih/2);
+ p.drawImage(0, 0, currentImage);
+}
+
+void ImageWidget::mouseDoubleClickEvent(QMouseEvent *)
+{
+ rotationAngle = 0;
+ scaleFactor = 1;
+ currentStepScaleFactor = 1;
+ verticalOffset = 0;
+ horizontalOffset = 0;
+ update();
+}
+
+//! [gesture event handler]
+bool ImageWidget::gestureEvent(QGestureEvent *event)
+{
+ if (QGesture *swipe = event->gesture(Qt::SwipeGesture))
+ swipeTriggered(static_cast<QSwipeGesture *>(swipe));
+ else if (QGesture *pan = event->gesture(Qt::PanGesture))
+ panTriggered(static_cast<QPanGesture *>(pan));
+ if (QGesture *pinch = event->gesture(Qt::PinchGesture))
+ pinchTriggered(static_cast<QPinchGesture *>(pinch));
+ return true;
+}
+//! [gesture event handler]
+
+void ImageWidget::panTriggered(QPanGesture *gesture)
+{
+#ifndef QT_NO_CURSOR
+ switch (gesture->state()) {
+ case Qt::GestureStarted:
+ case Qt::GestureUpdated:
+ setCursor(Qt::SizeAllCursor);
+ break;
+ default:
+ setCursor(Qt::ArrowCursor);
+ }
+#endif
+ QPointF delta = gesture->delta();
+ horizontalOffset += delta.x();
+ verticalOffset += delta.y();
+ update();
+}
+
+void ImageWidget::pinchTriggered(QPinchGesture *gesture)
+{
+ QPinchGesture::ChangeFlags changeFlags = gesture->changeFlags();
+ if (changeFlags & QPinchGesture::RotationAngleChanged) {
+ qreal value = gesture->property("rotationAngle").toReal();
+ qreal lastValue = gesture->property("lastRotationAngle").toReal();
+ rotationAngle += value - lastValue;
+ }
+ if (changeFlags & QPinchGesture::ScaleFactorChanged) {
+ qreal value = gesture->property("scaleFactor").toReal();
+ currentStepScaleFactor = value;
+ }
+ if (gesture->state() == Qt::GestureFinished) {
+ scaleFactor *= currentStepScaleFactor;
+ currentStepScaleFactor = 1;
+ }
+ update();
+}
+
+//! [swipe function]
+void ImageWidget::swipeTriggered(QSwipeGesture *gesture)
+{
+ if (gesture->state() == Qt::GestureFinished) {
+ if (gesture->horizontalDirection() == QSwipeGesture::Left
+ || gesture->verticalDirection() == QSwipeGesture::Up)
+ goPrevImage();
+ else
+ goNextImage();
+ update();
+ }
+}
+//! [swipe function]
+
+void ImageWidget::resizeEvent(QResizeEvent*)
+{
+ update();
+}
+
+void ImageWidget::openDirectory(const QString &path)
+{
+ this->path = path;
+ QDir dir(path);
+ QStringList nameFilters;
+ nameFilters << "*.jpg" << "*.png";
+ files = dir.entryList(nameFilters, QDir::Files|QDir::Readable, QDir::Name);
+
+ position = 0;
+ goToImage(0);
+ update();
+}
+
+QImage ImageWidget::loadImage(const QString &fileName)
+{
+ QImageReader reader(fileName);
+ if (!reader.canRead()) {
+ qDebug() << fileName << ": can't load image";
+ return QImage();
+ }
+
+ QImage image;
+ if (!reader.read(&image)) {
+ qDebug() << fileName << ": corrupted image";
+ return QImage();
+ }
+ return image;
+}
+
+void ImageWidget::goNextImage()
+{
+ if (files.isEmpty())
+ return;
+
+ if (position < files.size()-1) {
+ ++position;
+ prevImage = currentImage;
+ currentImage = nextImage;
+ if (position+1 < files.size())
+ nextImage = loadImage(path+QLatin1String("/")+files.at(position+1));
+ else
+ nextImage = QImage();
+ }
+ update();
+}
+
+void ImageWidget::goPrevImage()
+{
+ if (files.isEmpty())
+ return;
+
+ if (position > 0) {
+ --position;
+ nextImage = currentImage;
+ currentImage = prevImage;
+ if (position > 0)
+ prevImage = loadImage(path+QLatin1String("/")+files.at(position-1));
+ else
+ prevImage = QImage();
+ }
+ update();
+}
+
+void ImageWidget::goToImage(int index)
+{
+ if (files.isEmpty())
+ return;
+
+ if (index < 0 || index >= files.size()) {
+ qDebug() << "goToImage: invalid index: " << index;
+ return;
+ }
+
+ if (index == position+1) {
+ goNextImage();
+ return;
+ }
+
+ if (position > 0 && index == position-1) {
+ goPrevImage();
+ return;
+ }
+
+ position = index;
+
+ if (index > 0)
+ prevImage = loadImage(path+QLatin1String("/")+files.at(position-1));
+ else
+ prevImage = QImage();
+ currentImage = loadImage(path+QLatin1String("/")+files.at(position));
+ if (position+1 < files.size())
+ nextImage = loadImage(path+QLatin1String("/")+files.at(position+1));
+ else
+ nextImage = QImage();
+ update();
+}
diff --git a/examples/widgets/gestures/imagegestures/imagewidget.h b/examples/widgets/gestures/imagegestures/imagewidget.h
new file mode 100644
index 0000000000..7aaf554117
--- /dev/null
+++ b/examples/widgets/gestures/imagegestures/imagewidget.h
@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 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 IMAGEWIDGET_H
+#define IMAGEWIDGET_H
+
+#include <QWidget>
+#include <QImage>
+#include <QtWidgets>
+
+QT_BEGIN_NAMESPACE
+class QGestureEvent;
+class QPanGesture;
+class QPinchGesture;
+class QSwipeGesture;
+QT_END_NAMESPACE
+
+//! [class definition begin]
+class ImageWidget : public QWidget
+{
+ Q_OBJECT
+
+public:
+ ImageWidget(QWidget *parent = 0);
+ void openDirectory(const QString &path);
+
+protected:
+ bool event(QEvent *event);
+ void paintEvent(QPaintEvent *event);
+ void resizeEvent(QResizeEvent *event);
+ void mouseDoubleClickEvent(QMouseEvent *event);
+
+private:
+ bool gestureEvent(QGestureEvent *event);
+ void panTriggered(QPanGesture*);
+ void pinchTriggered(QPinchGesture*);
+ void swipeTriggered(QSwipeGesture*);
+//! [class definition begin]
+
+ void updateImage();
+ QImage loadImage(const QString &fileName);
+ void loadImage();
+ void goNextImage();
+ void goPrevImage();
+ void goToImage(int index);
+
+ QString path;
+ QStringList files;
+ int position;
+
+ QImage prevImage, nextImage;
+ QImage currentImage;
+
+ float horizontalOffset;
+ float verticalOffset;
+ float rotationAngle;
+ float scaleFactor;
+ float currentStepScaleFactor;
+//! [class definition end]
+};
+//! [class definition end]
+
+#endif
diff --git a/examples/widgets/gestures/imagegestures/main.cpp b/examples/widgets/gestures/imagegestures/main.cpp
new file mode 100644
index 0000000000..aec32149f0
--- /dev/null
+++ b/examples/widgets/gestures/imagegestures/main.cpp
@@ -0,0 +1,58 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 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 <QtWidgets>
+
+#include "mainwidget.h"
+
+int main(int argc, char *argv[])
+{
+ QApplication app(argc, argv);
+
+ MainWidget w;
+ w.show();
+
+ if (QApplication::arguments().size() > 1)
+ w.openDirectory(QApplication::arguments().at(1));
+ else
+ w.openDirectory(QFileDialog::getExistingDirectory(0, "Select image folder"));
+
+ return app.exec();
+}
diff --git a/examples/widgets/gestures/imagegestures/mainwidget.cpp b/examples/widgets/gestures/imagegestures/mainwidget.cpp
new file mode 100644
index 0000000000..105cdf184e
--- /dev/null
+++ b/examples/widgets/gestures/imagegestures/mainwidget.cpp
@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 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 "imagewidget.h"
+#include "mainwidget.h"
+
+MainWidget::MainWidget(QWidget *parent)
+ : QMainWindow(parent)
+{
+ resize(400, 300);
+ imageWidget = new ImageWidget(this);
+ setCentralWidget(imageWidget);
+}
+
+void MainWidget::openDirectory(const QString &path)
+{
+ imageWidget->openDirectory(path);
+}
diff --git a/examples/widgets/gestures/imagegestures/mainwidget.h b/examples/widgets/gestures/imagegestures/mainwidget.h
new file mode 100644
index 0000000000..5135466fde
--- /dev/null
+++ b/examples/widgets/gestures/imagegestures/mainwidget.h
@@ -0,0 +1,64 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 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 MAINWIDGET_H
+#define MAINWIDGET_H
+
+#include <QMainWindow>
+
+class ImageWidget;
+
+class MainWidget : public QMainWindow
+{
+ Q_OBJECT
+
+public:
+ MainWidget(QWidget *parent = 0);
+
+public slots:
+ void openDirectory(const QString &path);
+
+private:
+ bool loadImage(const QString &fileName);
+
+ ImageWidget *imageWidget;
+};
+
+#endif
diff --git a/examples/widgets/widgets.pro b/examples/widgets/widgets.pro
index 9c82ad0bb7..d7d3dbc445 100644
--- a/examples/widgets/widgets.pro
+++ b/examples/widgets/widgets.pro
@@ -9,6 +9,7 @@ SUBDIRS = \
dialogs \
draganddrop \
effects \
+ gestures \
graphicsview \
itemviews \
layouts \