<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>photosurface.qml Example File | Qt Quick 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td ><a href="qtquick-demos-photosurface-example.html">Qt Quick Demo - Photo Surface</a></td><td >photosurface.qml Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">photosurface.qml Example File</h1> <span class="subtitle">demos/photosurface/photosurface.qml</span> <!-- $$$demos/photosurface/photosurface.qml-description --> <div class="descr"> <a name="details"></a> <pre class="qml"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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 The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, 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 The Qt Company Ltd 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> import QtQuick 2.6 import QtQuick.Dialogs 1.0 import QtQuick.Window 2.1 import Qt.labs.folderlistmodel 1.0 <span class="type"><a href="qml-qtquick-window-window.html">Window</a></span> { <span class="name">id</span>: <span class="name">root</span> <span class="name">visible</span>: <span class="number">true</span> <span class="name">width</span>: <span class="number">1024</span>; <span class="name">height</span>: <span class="number">600</span> <span class="name">color</span>: <span class="string">"black"</span> property <span class="type">int</span> <span class="name">highestZ</span>: <span class="number">0</span> property <span class="type">real</span> <span class="name">defaultSize</span>: <span class="number">200</span> property <span class="type">var</span> <span class="name">currentFrame</span>: <span class="name">undefined</span> property <span class="type">real</span> <span class="name">surfaceViewportRatio</span>: <span class="number">1.5</span> <span class="type">FileDialog</span> { <span class="name">id</span>: <span class="name">fileDialog</span> <span class="name">title</span>: <span class="string">"Choose a folder with some images"</span> <span class="name">selectFolder</span>: <span class="number">true</span> <span class="name">folder</span>: <span class="name">picturesLocation</span> <span class="name">onAccepted</span>: <span class="name">folderModel</span>.<span class="name">folder</span> <span class="operator">=</span> <span class="name">fileUrl</span> <span class="operator">+</span> <span class="string">"/"</span> } <span class="type"><a href="qml-qtquick-flickable.html">Flickable</a></span> { <span class="name">id</span>: <span class="name">flick</span> <span class="name">anchors</span>.fill: <span class="name">parent</span> <span class="name">contentWidth</span>: <span class="name">width</span> <span class="operator">*</span> <span class="name">surfaceViewportRatio</span> <span class="name">contentHeight</span>: <span class="name">height</span> <span class="operator">*</span> <span class="name">surfaceViewportRatio</span> <span class="type"><a href="qml-qtquick-repeater.html">Repeater</a></span> { <span class="name">model</span>: <span class="name">FolderListModel</span> { <span class="name">id</span>: <span class="name">folderModel</span> <span class="name">objectName</span>: <span class="string">"folderModel"</span> <span class="name">showDirs</span>: <span class="number">false</span> <span class="name">nameFilters</span>: <span class="name">imageNameFilters</span> } <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> { <span class="name">id</span>: <span class="name">photoFrame</span> <span class="name">width</span>: <span class="name">image</span>.<span class="name">width</span> <span class="operator">*</span> (<span class="number">1</span> <span class="operator">+</span> <span class="number">0.10</span> <span class="operator">*</span> <span class="name">image</span>.<span class="name">height</span> <span class="operator">/</span> <span class="name">image</span>.<span class="name">width</span>) <span class="name">height</span>: <span class="name">image</span>.<span class="name">height</span> <span class="operator">*</span> <span class="number">1.10</span> <span class="name">scale</span>: <span class="name">defaultSize</span> <span class="operator">/</span> <span class="name">Math</span>.<span class="name">max</span>(<span class="name">image</span>.<span class="name">sourceSize</span>.<span class="name">width</span>, <span class="name">image</span>.<span class="name">sourceSize</span>.<span class="name">height</span>) Behavior on <span class="name">scale</span> { <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">duration</span>: <span class="number">200</span> } } Behavior on <span class="name">x</span> { <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">duration</span>: <span class="number">200</span> } } Behavior on <span class="name">y</span> { <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">duration</span>: <span class="number">200</span> } } <span class="name">border</span>.color: <span class="string">"black"</span> <span class="name">border</span>.width: <span class="number">2</span> <span class="name">smooth</span>: <span class="number">true</span> <span class="name">antialiasing</span>: <span class="number">true</span> <span class="name">Component</span>.onCompleted: { <span class="name">x</span> <span class="operator">=</span> <span class="name">Math</span>.<span class="name">random</span>() <span class="operator">*</span> <span class="name">root</span>.<span class="name">width</span> <span class="operator">-</span> <span class="name">width</span> <span class="operator">/</span> <span class="number">2</span> <span class="name">y</span> <span class="operator">=</span> <span class="name">Math</span>.<span class="name">random</span>() <span class="operator">*</span> <span class="name">root</span>.<span class="name">height</span> <span class="operator">-</span> <span class="name">height</span> <span class="operator">/</span> <span class="number">2</span> <span class="name">rotation</span> <span class="operator">=</span> <span class="name">Math</span>.<span class="name">random</span>() <span class="operator">*</span> <span class="number">13</span> <span class="operator">-</span> <span class="number">6</span> } <span class="type"><a href="qml-qtquick-image.html">Image</a></span> { <span class="name">id</span>: <span class="name">image</span> <span class="name">anchors</span>.centerIn: <span class="name">parent</span> <span class="name">fillMode</span>: <span class="name">Image</span>.<span class="name">PreserveAspectFit</span> <span class="name">source</span>: <span class="name">folderModel</span>.<span class="name">folder</span> <span class="operator">+</span> <span class="name">fileName</span> <span class="name">antialiasing</span>: <span class="number">true</span> } <span class="type"><a href="qml-qtquick-pincharea.html">PinchArea</a></span> { <span class="name">anchors</span>.fill: <span class="name">parent</span> <span class="name">pinch</span>.target: <span class="name">photoFrame</span> <span class="name">pinch</span>.minimumRotation: -<span class="number">360</span> <span class="name">pinch</span>.maximumRotation: <span class="number">360</span> <span class="name">pinch</span>.minimumScale: <span class="number">0.1</span> <span class="name">pinch</span>.maximumScale: <span class="number">10</span> <span class="name">pinch</span>.dragAxis: <span class="name">Pinch</span>.<span class="name">XAndYAxis</span> <span class="name">onPinchStarted</span>: <span class="name">setFrameColor</span>(); property <span class="type">real</span> <span class="name">zRestore</span>: <span class="number">0</span> <span class="name">onSmartZoom</span>: { <span class="keyword">if</span> (<span class="name">pinch</span>.<span class="name">scale</span> <span class="operator">></span> <span class="number">0</span>) { <span class="name">photoFrame</span>.<span class="name">rotation</span> <span class="operator">=</span> <span class="number">0</span>; <span class="name">photoFrame</span>.<span class="name">scale</span> <span class="operator">=</span> <span class="name">Math</span>.<span class="name">min</span>(<span class="name">root</span>.<span class="name">width</span>, <span class="name">root</span>.<span class="name">height</span>) <span class="operator">/</span> <span class="name">Math</span>.<span class="name">max</span>(<span class="name">image</span>.<span class="name">sourceSize</span>.<span class="name">width</span>, <span class="name">image</span>.<span class="name">sourceSize</span>.<span class="name">height</span>) <span class="operator">*</span> <span class="number">0.85</span> <span class="name">photoFrame</span>.<span class="name">x</span> <span class="operator">=</span> <span class="name">flick</span>.<span class="name">contentX</span> <span class="operator">+</span> (<span class="name">flick</span>.<span class="name">width</span> <span class="operator">-</span> <span class="name">photoFrame</span>.<span class="name">width</span>) <span class="operator">/</span> <span class="number">2</span> <span class="name">photoFrame</span>.<span class="name">y</span> <span class="operator">=</span> <span class="name">flick</span>.<span class="name">contentY</span> <span class="operator">+</span> (<span class="name">flick</span>.<span class="name">height</span> <span class="operator">-</span> <span class="name">photoFrame</span>.<span class="name">height</span>) <span class="operator">/</span> <span class="number">2</span> <span class="name">zRestore</span> <span class="operator">=</span> <span class="name">photoFrame</span>.<span class="name">z</span> <span class="name">photoFrame</span>.<span class="name">z</span> <span class="operator">=</span> ++<span class="name">root</span>.<span class="name">highestZ</span>; } <span class="keyword">else</span> { <span class="name">photoFrame</span>.<span class="name">rotation</span> <span class="operator">=</span> <span class="name">pinch</span>.<span class="name">previousAngle</span> <span class="name">photoFrame</span>.<span class="name">scale</span> <span class="operator">=</span> <span class="name">pinch</span>.<span class="name">previousScale</span> <span class="name">photoFrame</span>.<span class="name">x</span> <span class="operator">=</span> <span class="name">pinch</span>.<span class="name">previousCenter</span>.<span class="name">x</span> <span class="operator">-</span> <span class="name">photoFrame</span>.<span class="name">width</span> <span class="operator">/</span> <span class="number">2</span> <span class="name">photoFrame</span>.<span class="name">y</span> <span class="operator">=</span> <span class="name">pinch</span>.<span class="name">previousCenter</span>.<span class="name">y</span> <span class="operator">-</span> <span class="name">photoFrame</span>.<span class="name">height</span> <span class="operator">/</span> <span class="number">2</span> <span class="name">photoFrame</span>.<span class="name">z</span> <span class="operator">=</span> <span class="name">zRestore</span> --<span class="name">root</span>.<span class="name">highestZ</span> } } <span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> { <span class="name">id</span>: <span class="name">dragArea</span> <span class="name">hoverEnabled</span>: <span class="number">true</span> <span class="name">anchors</span>.fill: <span class="name">parent</span> <span class="name">drag</span>.target: <span class="name">photoFrame</span> <span class="name">scrollGestureEnabled</span>: <span class="number">false</span> <span class="comment">// 2-finger-flick gesture should pass through to the Flickable</span> <span class="name">onPressed</span>: { <span class="name">photoFrame</span>.<span class="name">z</span> <span class="operator">=</span> ++<span class="name">root</span>.<span class="name">highestZ</span>; <span class="name">parent</span>.<span class="name">setFrameColor</span>(); } <span class="name">onEntered</span>: <span class="name">parent</span>.<span class="name">setFrameColor</span>(); <span class="name">onWheel</span>: { <span class="keyword">if</span> (<span class="name">wheel</span>.<span class="name">modifiers</span> <span class="operator">&</span> <span class="name">Qt</span>.<span class="name">ControlModifier</span>) { <span class="name">photoFrame</span>.<span class="name">rotation</span> <span class="operator">+=</span> <span class="name">wheel</span>.<span class="name">angleDelta</span>.<span class="name">y</span> <span class="operator">/</span> <span class="number">120</span> <span class="operator">*</span> <span class="number">5</span>; <span class="keyword">if</span> (<span class="name">Math</span>.<span class="name">abs</span>(<span class="name">photoFrame</span>.<span class="name">rotation</span>) <span class="operator"><</span> <span class="number">4</span>) <span class="name">photoFrame</span>.<span class="name">rotation</span> <span class="operator">=</span> <span class="number">0</span>; } <span class="keyword">else</span> { <span class="name">photoFrame</span>.<span class="name">rotation</span> <span class="operator">+=</span> <span class="name">wheel</span>.<span class="name">angleDelta</span>.<span class="name">x</span> <span class="operator">/</span> <span class="number">120</span>; <span class="keyword">if</span> (<span class="name">Math</span>.<span class="name">abs</span>(<span class="name">photoFrame</span>.<span class="name">rotation</span>) <span class="operator"><</span> <span class="number">0.6</span>) <span class="name">photoFrame</span>.<span class="name">rotation</span> <span class="operator">=</span> <span class="number">0</span>; var <span class="name">scaleBefore</span> = <span class="name">photoFrame</span>.<span class="name">scale</span>; <span class="name">photoFrame</span>.<span class="name">scale</span> <span class="operator">+=</span> <span class="name">photoFrame</span>.<span class="name">scale</span> <span class="operator">*</span> <span class="name">wheel</span>.<span class="name">angleDelta</span>.<span class="name">y</span> <span class="operator">/</span> <span class="number">120</span> <span class="operator">/</span> <span class="number">10</span>; } } } <span class="keyword">function</span> <span class="name">setFrameColor</span>() { <span class="keyword">if</span> (<span class="name">currentFrame</span>) <span class="name">currentFrame</span>.<span class="name">border</span>.<span class="name">color</span> <span class="operator">=</span> <span class="string">"black"</span>; <span class="name">currentFrame</span> <span class="operator">=</span> <span class="name">photoFrame</span>; <span class="name">currentFrame</span>.<span class="name">border</span>.<span class="name">color</span> <span class="operator">=</span> <span class="string">"red"</span>; } } } } } <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> { <span class="name">id</span>: <span class="name">verticalScrollDecorator</span> <span class="name">anchors</span>.right: <span class="name">parent</span>.<span class="name">right</span> <span class="name">anchors</span>.margins: <span class="number">2</span> <span class="name">color</span>: <span class="string">"cyan"</span> <span class="name">border</span>.color: <span class="string">"black"</span> <span class="name">border</span>.width: <span class="number">1</span> <span class="name">width</span>: <span class="number">5</span> <span class="name">radius</span>: <span class="number">2</span> <span class="name">antialiasing</span>: <span class="number">true</span> <span class="name">height</span>: <span class="name">flick</span>.<span class="name">height</span> <span class="operator">*</span> (<span class="name">flick</span>.<span class="name">height</span> <span class="operator">/</span> <span class="name">flick</span>.<span class="name">contentHeight</span>) <span class="operator">-</span> (<span class="name">width</span> <span class="operator">-</span> <span class="name">anchors</span>.<span class="name">margins</span>) <span class="operator">*</span> <span class="number">2</span> <span class="name">y</span>: (<span class="name">flick</span>.<span class="name">contentY</span> <span class="operator">-</span> <span class="name">flick</span>.<span class="name">originY</span>) <span class="operator">*</span> (<span class="name">flick</span>.<span class="name">height</span> <span class="operator">/</span> <span class="name">flick</span>.<span class="name">contentHeight</span>) NumberAnimation on <span class="name">opacity</span> { <span class="name">id</span>: <span class="name">vfade</span>; <span class="name">to</span>: <span class="number">0</span>; <span class="name">duration</span>: <span class="number">500</span> } <span class="name">onYChanged</span>: { <span class="name">opacity</span> <span class="operator">=</span> <span class="number">1.0</span>; <span class="name">scrollFadeTimer</span>.<span class="name">restart</span>() } } <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> { <span class="name">id</span>: <span class="name">horizontalScrollDecorator</span> <span class="name">anchors</span>.bottom: <span class="name">parent</span>.<span class="name">bottom</span> <span class="name">anchors</span>.margins: <span class="number">2</span> <span class="name">color</span>: <span class="string">"cyan"</span> <span class="name">border</span>.color: <span class="string">"black"</span> <span class="name">border</span>.width: <span class="number">1</span> <span class="name">height</span>: <span class="number">5</span> <span class="name">radius</span>: <span class="number">2</span> <span class="name">antialiasing</span>: <span class="number">true</span> <span class="name">width</span>: <span class="name">flick</span>.<span class="name">width</span> <span class="operator">*</span> (<span class="name">flick</span>.<span class="name">width</span> <span class="operator">/</span> <span class="name">flick</span>.<span class="name">contentWidth</span>) <span class="operator">-</span> (<span class="name">height</span> <span class="operator">-</span> <span class="name">anchors</span>.<span class="name">margins</span>) <span class="operator">*</span> <span class="number">2</span> <span class="name">x</span>: (<span class="name">flick</span>.<span class="name">contentX</span> <span class="operator">-</span> <span class="name">flick</span>.<span class="name">originY</span>) <span class="operator">*</span> (<span class="name">flick</span>.<span class="name">width</span> <span class="operator">/</span> <span class="name">flick</span>.<span class="name">contentWidth</span>) NumberAnimation on <span class="name">opacity</span> { <span class="name">id</span>: <span class="name">hfade</span>; <span class="name">to</span>: <span class="number">0</span>; <span class="name">duration</span>: <span class="number">500</span> } <span class="name">onXChanged</span>: { <span class="name">opacity</span> <span class="operator">=</span> <span class="number">1.0</span>; <span class="name">scrollFadeTimer</span>.<span class="name">restart</span>() } } <span class="type">Timer</span> { <span class="name">id</span>: <span class="name">scrollFadeTimer</span>; <span class="name">interval</span>: <span class="number">1000</span>; <span class="name">onTriggered</span>: { <span class="name">hfade</span>.<span class="name">start</span>(); <span class="name">vfade</span>.<span class="name">start</span>() } } <span class="type"><a href="qml-qtquick-image.html">Image</a></span> { <span class="name">anchors</span>.top: <span class="name">parent</span>.<span class="name">top</span> <span class="name">anchors</span>.left: <span class="name">parent</span>.<span class="name">left</span> <span class="name">anchors</span>.margins: <span class="number">10</span> <span class="name">source</span>: <span class="string">"resources/folder.png"</span> <span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> { <span class="name">anchors</span>.fill: <span class="name">parent</span> <span class="name">anchors</span>.margins: -<span class="number">10</span> <span class="name">onClicked</span>: <span class="name">fileDialog</span>.<span class="name">open</span>() <span class="name">hoverEnabled</span>: <span class="number">true</span> <span class="name">onPositionChanged</span>: { <span class="name">tooltip</span>.<span class="name">visible</span> <span class="operator">=</span> <span class="number">false</span> <span class="name">hoverTimer</span>.<span class="name">start</span>() } <span class="name">onExited</span>: { <span class="name">tooltip</span>.<span class="name">visible</span> <span class="operator">=</span> <span class="number">false</span> <span class="name">hoverTimer</span>.<span class="name">stop</span>() } <span class="type">Timer</span> { <span class="name">id</span>: <span class="name">hoverTimer</span> <span class="name">interval</span>: <span class="number">1000</span> <span class="name">onTriggered</span>: { <span class="name">tooltip</span>.<span class="name">x</span> <span class="operator">=</span> <span class="name">parent</span>.<span class="name">mouseX</span> <span class="name">tooltip</span>.<span class="name">y</span> <span class="operator">=</span> <span class="name">parent</span>.<span class="name">mouseY</span> <span class="name">tooltip</span>.<span class="name">visible</span> <span class="operator">=</span> <span class="number">true</span> } } <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> { <span class="name">id</span>: <span class="name">tooltip</span> <span class="name">border</span>.color: <span class="string">"black"</span> <span class="name">color</span>: <span class="string">"beige"</span> <span class="name">width</span>: <span class="name">tooltipText</span>.<span class="name">implicitWidth</span> <span class="operator">+</span> <span class="number">8</span> <span class="name">height</span>: <span class="name">tooltipText</span>.<span class="name">implicitHeight</span> <span class="operator">+</span> <span class="number">8</span> <span class="name">visible</span>: <span class="number">false</span> <span class="type"><a href="qml-qtquick-text.html">Text</a></span> { <span class="name">id</span>: <span class="name">tooltipText</span> <span class="name">anchors</span>.centerIn: <span class="name">parent</span> <span class="name">text</span>: <span class="string">"Open an image directory ("</span> <span class="operator">+</span> <span class="name">openShortcut</span>.<span class="name">sequenceString</span> <span class="operator">+</span> <span class="string">")"</span> } } } <span class="type"><a href="qml-qtquick-shortcut.html">Shortcut</a></span> { <span class="name">id</span>: <span class="name">openShortcut</span> <span class="name">sequence</span>: <span class="name">StandardKey</span>.<span class="name">Open</span> <span class="name">onActivated</span>: <span class="name">fileDialog</span>.<span class="name">open</span>() } } <span class="type"><a href="qml-qtquick-text.html">Text</a></span> { <span class="name">anchors</span>.bottom: <span class="name">parent</span>.<span class="name">bottom</span> <span class="name">anchors</span>.left: <span class="name">parent</span>.<span class="name">left</span> <span class="name">anchors</span>.right: <span class="name">parent</span>.<span class="name">right</span> <span class="name">anchors</span>.margins: <span class="number">10</span> <span class="name">color</span>: <span class="string">"darkgrey"</span> <span class="name">wrapMode</span>: <span class="name">Text</span>.<span class="name">WordWrap</span> <span class="name">font</span>.pointSize: <span class="number">8</span> <span class="name">text</span>: <span class="string">"On a touchscreen: use two fingers to zoom and rotate, one finger to drag\n"</span> <span class="operator">+</span> <span class="string">"With a mouse: drag normally, use the vertical wheel to zoom, horizontal wheel to rotate, or hold Ctrl while using the vertical wheel to rotate"</span> } <span class="type"><a href="qml-qtquick-shortcut.html">Shortcut</a></span> { <span class="name">sequence</span>: <span class="name">StandardKey</span>.<span class="name">Quit</span>; <span class="name">onActivated</span>: <span class="name">Qt</span>.<span class="name">quit</span>() } <span class="name">Component</span>.onCompleted: { <span class="keyword">if</span> (typeof <span class="name">contextInitialUrl</span> <span class="operator">!==</span> <span class="string">'undefined'</span>) { <span class="comment">// Launched from C++ with context properties set.</span> <span class="name">imageNameFilters</span> <span class="operator">=</span> <span class="name">contextImageNameFilters</span>; <span class="name">picturesLocation</span> <span class="operator">=</span> <span class="name">contextPicturesLocation</span>; <span class="keyword">if</span> (<span class="name">contextInitialUrl</span> <span class="operator">==</span> <span class="string">""</span>) <span class="name">fileDialog</span>.<span class="name">open</span>(); <span class="keyword">else</span> <span class="name">folderModel</span>.<span class="name">folder</span> <span class="operator">=</span> <span class="name">contextInitialUrl</span> <span class="operator">+</span> <span class="string">"/"</span>; } <span class="keyword">else</span> { <span class="comment">// Launched via QML viewer without context properties set.</span> <span class="name">fileDialog</span>.<span class="name">open</span>(); } } property <span class="type">var</span> <span class="name">imageNameFilters</span> : [<span class="string">"*.png"</span>, <span class="string">"*.jpg"</span>, <span class="string">"*.gif"</span>]; property <span class="type">string</span> <span class="name">picturesLocation</span> : <span class="string">""</span>; } </pre> </div> <!-- @@@demos/photosurface/photosurface.qml --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>