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-rw-r--r--examples/gestures/imagegestures/imagegestures.pro21
-rw-r--r--examples/gestures/imagegestures/imagewidget.cpp267
-rw-r--r--examples/gestures/imagegestures/imagewidget.h100
-rw-r--r--examples/gestures/imagegestures/main.cpp58
-rw-r--r--examples/gestures/imagegestures/mainwidget.cpp55
-rw-r--r--examples/gestures/imagegestures/mainwidget.h64
6 files changed, 565 insertions, 0 deletions
diff --git a/examples/gestures/imagegestures/imagegestures.pro b/examples/gestures/imagegestures/imagegestures.pro
new file mode 100644
index 0000000000..10326e658d
--- /dev/null
+++ b/examples/gestures/imagegestures/imagegestures.pro
@@ -0,0 +1,21 @@
+HEADERS = imagewidget.h \
+ mainwidget.h
+SOURCES = imagewidget.cpp \
+ main.cpp \
+ mainwidget.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/gestures/imagegestures
+sources.files = $$SOURCES \
+ $$HEADERS \
+ $$RESOURCES \
+ $$FORMS \
+ imagegestures.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/gestures/imagegestures
+INSTALLS += target \
+ sources
+
+symbian {
+ TARGET.UID3 = 0xA000D7D0
+ include($$QT_SOURCE_TREE/examples/symbianpkgrules.pri)
+}
diff --git a/examples/gestures/imagegestures/imagewidget.cpp b/examples/gestures/imagegestures/imagewidget.cpp
new file mode 100644
index 0000000000..8bbb96563e
--- /dev/null
+++ b/examples/gestures/imagegestures/imagewidget.cpp
@@ -0,0 +1,267 @@
+
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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 Nokia Corporation 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 <QtGui>
+
+//! [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/gestures/imagegestures/imagewidget.h b/examples/gestures/imagegestures/imagewidget.h
new file mode 100644
index 0000000000..fff24fbcdf
--- /dev/null
+++ b/examples/gestures/imagegestures/imagewidget.h
@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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 Nokia Corporation 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 <QtGui>
+
+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/gestures/imagegestures/main.cpp b/examples/gestures/imagegestures/main.cpp
new file mode 100644
index 0000000000..ca37a733f7
--- /dev/null
+++ b/examples/gestures/imagegestures/main.cpp
@@ -0,0 +1,58 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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 Nokia Corporation 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 <QtGui>
+
+#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/gestures/imagegestures/mainwidget.cpp b/examples/gestures/imagegestures/mainwidget.cpp
new file mode 100644
index 0000000000..329cfe3bfd
--- /dev/null
+++ b/examples/gestures/imagegestures/mainwidget.cpp
@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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 Nokia Corporation 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/gestures/imagegestures/mainwidget.h b/examples/gestures/imagegestures/mainwidget.h
new file mode 100644
index 0000000000..066b1ee680
--- /dev/null
+++ b/examples/gestures/imagegestures/mainwidget.h
@@ -0,0 +1,64 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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 Nokia Corporation 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
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