photosurface example: simplify PinchArea usage; fileUrls; license

FileDialog.filePaths was changed to fileUrls.  No need to do so much
scripting because the PinchArea.target takes care of the math already,
and with better rotational symmetry too.  Example QML should have a
BSD license.

Change-Id: I892292574c81c032d948c1c2d4924fc7127dd008
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>

1 files changed, 33 insertions, 41 deletions

diff --git a/examples/quick/demos/photosurface/photosurface.qml b/examples/quick/demos/photosurface/photosurface.qml
index 80957180d0..53e0edffbe 100644
--- a/examples/quick/demos/photosurface/photosurface.qml
+++ b/examples/quick/demos/photosurface/photosurface.qml
@@ -1,39 +1,38 @@
 /****************************************************************************
 **
-** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/legal
 **
-** This file is part of the QtQml module of the Qt Toolkit.
+** This file is part of the examples of the Qt Toolkit.
 **
-** $QT_BEGIN_LICENSE:LGPL$
-** 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.
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
 **
-** 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.
+** "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.
 **
-** In addition, as a special exception, Digia gives you certain additional
-** rights.  These rights are described in the Digia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3.0 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU General Public License version 3.0 requirements will be
-** met: http://www.gnu.org/copyleft/gpl.html.
 **
+** 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."
 **
 ** $QT_END_LICENSE$
 **
@@ -54,7 +53,7 @@ Rectangle {
         id: fileDialog
         title: "Choose a folder with some images"
         selectFolder: true
-        onAccepted: { folderModel.folder = filePaths[0] + "/" }
+        onAccepted: folderModel.folder = fileUrl + "/"
     }
 
     Repeater {
@@ -85,18 +84,11 @@ Rectangle {
             }
             PinchArea {
                 anchors.fill: parent
-                property real initialScale
-                property real initialRotation
-                onPinchStarted: {
-                    initialScale = image.scale
-                    initialRotation = parent.rotation
-                }
-                onPinchUpdated: {
-                    image.scale = initialScale * pinch.scale;
-                    parent.rotation = initialRotation + pinch.rotation
-                    if (Math.abs(photoFrame.rotation) < 4)
-                        parent.rotation = 0;
-                }
+                pinch.target: photoFrame
+                pinch.minimumRotation: -360
+                pinch.maximumRotation: 360
+                pinch.minimumScale: 0.1
+                pinch.maximumScale: 10
                 onPinchFinished: photoFrame.border.color = "black";
                 MouseArea {
                     id: dragArea