Doc: Moving the Image Gestures example.

Reviewed-by: Trust Me

1 files changed, 0 insertions, 268 deletions

diff --git a/examples/gestures/imageviewer/imagewidget.cpp b/examples/gestures/imageviewer/imagewidget.cpp
deleted file mode 100644
index c4a4e50..0000000
--- a/examples/gestures/imageviewer/imagewidget.cpp
+++ /dev/null
@@ -1,268 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 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.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights.  These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "imagewidget.h"
-
-#include <QtGui>
-
-ImageWidget::ImageWidget(QWidget *parent)
-    : QWidget(parent),
-    position(0),
-    horizontalOffset(0),
-    verticalOffset(0),
-    rotationAngle(0),
-    scaleFactor(1)
-
-{
-    setObjectName("ImageWidget");
-    setMinimumSize(QSize(100,100));
-
-    setAttribute(Qt::WA_PaintOnScreen);
-    setAttribute(Qt::WA_OpaquePaintEvent);
-    setAttribute(Qt::WA_NoSystemBackground);
-
-//! [enable gestures]
-    grabGesture(Qt::PanGesture);
-    grabGesture(Qt::PinchGesture);
-    grabGesture(Qt::SwipeGesture);
-//! [enable gestures]
-}
-
-//! [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);
-    p.fillRect(rect(), Qt::white);
-
-    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(scaleFactor, scaleFactor);
-    p.translate(-iw/2, -ih/2);
-    p.drawImage(0, 0, currentImage);
-}
-
-void ImageWidget::mouseDoubleClickEvent(QMouseEvent *)
-{
-    rotationAngle = 0;
-    scaleFactor = 1;
-    verticalOffset = 0;
-    horizontalOffset = 0;
-    update();
-}
-
-//! [gesture event handler]
-bool ImageWidget::gestureEvent(QGestureEvent *event)
-{
-    if (QGesture *pan = event->gesture(Qt::PanGesture)) {
-        panTriggered(static_cast<QPanGesture*>(pan));
-        return true;
-    } else if (QGesture *pinch = event->gesture(Qt::PinchGesture)) {
-        pinchTriggered(static_cast<QPinchGesture*>(pinch));
-        return true;
-    } else if (QGesture *swipe = event->gesture(Qt::SwipeGesture)) {
-        swipeTriggered(static_cast<QSwipeGesture*>(swipe));
-        return true;
-    }
-    return false;
-}
-//! [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
-    QSizeF lastOffset = gesture->offset();
-    horizontalOffset += lastOffset.width();
-    verticalOffset += lastOffset.height();
-    update();
-}
-
-void ImageWidget::pinchTriggered(QPinchGesture *gesture)
-{
-    QPinchGesture::WhatChanged whatChanged = gesture->whatChanged();
-    if (whatChanged & QPinchGesture::RotationAngleChanged) {
-        qreal value = gesture->property("rotationAngle").toReal();
-        qreal lastValue = gesture->property("lastRotationAngle").toReal();
-        rotationAngle += value - lastValue;
-    }
-    if (whatChanged & QPinchGesture::ScaleFactorChanged) {
-        qreal value = gesture->property("scaleFactor").toReal();
-        qreal lastValue = gesture->property("lastScaleFactor").toReal();
-        scaleFactor += value - lastValue;
-    }
-    update();
-}
-
-//! [swipe function]
-void ImageWidget::swipeTriggered(QSwipeGesture *gesture)
-{
-    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();
-}