/usr/share/qt5/doc/qtmultimedia/qml-qtmultimedia-cameracapture.html is in qtmultimedia5-doc-html 5.5.1-4ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 | <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- qdeclarativecameracapture.cpp -->
<title>CameraCapture QML Type | Qt Multimedia 5.5</title>
<link rel="stylesheet" type="text/css" href="style/offline.css" />
</head>
<body>
<div class="header" id="qtdocheader">
<div class="main">
<div class="main-rounded">
<div class="navigationbar">
<ul>
<li>Qt 5.5</li>
<li><a href="qtmultimedia-index.html">Qt Multimedia</a></li>
<li><a href="qtmultimedia-qmlmodule.html">QML Types</a></li>
<li>CameraCapture QML Type</li>
<li id="buildversion">Qt 5.5.1 Reference Documentation</li>
</ul>
</div>
</div>
<div class="content">
<div class="line">
<div class="content mainContent">
<div class="sidebar">
<div class="toc">
<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#signals">Signals</a></li>
<li class="level1"><a href="#methods">Methods</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
</ul>
</div>
<div class="sidebar-content" id="sidebar-content"></div></div>
<h1 class="title">CameraCapture QML Type</h1>
<span class="subtitle"></span>
<!-- $$$CameraCapture-brief -->
<p>An interface for capturing camera images <a href="#details">More...</a></p>
<!-- @@@CameraCapture -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import QtMultimedia 5.5</td></tr></table></div><ul>
<li><a href="qml-qtmultimedia-cameracapture-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="properties"></a>
<h2 id="properties">Properties</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#capturedImagePath-prop">capturedImagePath</a></b></b> : string</li>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#errorString-prop">errorString</a></b></b> : string</li>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#ready-prop">ready</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#resolution-prop">resolution</a></b></b> : size</li>
</ul>
<a name="signals"></a>
<h2 id="signals">Signals</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#captureFailed-signal">captureFailed</a></b></b>(requestId, message)</li>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#imageCaptured-signal">imageCaptured</a></b></b>(requestId, preview)</li>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#imageMetadataAvailable-signal">imageMetadataAvailable</a></b></b>(requestId, key, value)</li>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#imageSaved-signal">imageSaved</a></b></b>(requestId, path)</li>
</ul>
<a name="methods"></a>
<h2 id="methods">Methods</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#cancelCapture-method">cancelCapture</a></b></b>()</li>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#capture-method">capture</a></b></b>()</li>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#captureToLocation-method">captureToLocation</a></b></b>(location)</li>
<li class="fn"><b><b><a href="qml-qtmultimedia-cameracapture.html#setMetadata-method">setMetadata</a></b></b>(key, value)</li>
</ul>
<!-- $$$CameraCapture-description -->
<a name="details"></a>
<h2 id="details">Detailed Description</h2>
</p>
<p>This type allows you to capture still images and be notified when they are available or saved to disk. You can adjust the resolution of the captured image and where the saved image should go.</p>
<p><a href="qml-qtmultimedia-cameracapture.html">CameraCapture</a> is a child of a <a href="qml-multimedia.html#camera">Camera</a> (as the <code>imageCapture</code> property) and cannot be created directly.</p>
<pre class="qml"><span class="type">Item</span> {
<span class="name">width</span>: <span class="number">640</span>
<span class="name">height</span>: <span class="number">360</span>
<span class="type"><a href="qml-qtmultimedia-camera.html">Camera</a></span> {
<span class="name">id</span>: <span class="name">camera</span>
<span class="type">imageCapture</span> {
<span class="name">onImageCaptured</span>: {
<span class="comment">// Show the preview in an Image</span>
<span class="name">photoPreview</span>.<span class="name">source</span> <span class="operator">=</span> <span class="name">preview</span>
}
}
}
<span class="type"><a href="qml-qtmultimedia-videooutput.html">VideoOutput</a></span> {
<span class="name">source</span>: <span class="name">camera</span>
<span class="name">focus</span> : <span class="name">visible</span> <span class="comment">// to receive focus and capture key events when visible</span>
<span class="name">anchors</span>.fill: <span class="name">parent</span>
<span class="type">MouseArea</span> {
<span class="name">anchors</span>.fill: <span class="name">parent</span>;
<span class="name">onClicked</span>: <span class="name">camera</span>.<span class="name">imageCapture</span>.<span class="name">capture</span>();
}
}
<span class="type">Image</span> {
<span class="name">id</span>: <span class="name">photoPreview</span>
}
}</pre>
<!-- @@@CameraCapture -->
<h2>Property Documentation</h2>
<!-- $$$capturedImagePath -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="capturedImagePath-prop"><td class="tblQmlPropNode"><p><a name="capturedImagePath-prop"></a><span class="name">capturedImagePath</span> : <span class="type">string</span></p></td></tr></table></div></div><div class="qmldoc"><p>This property holds the location of the last captured image.</p>
</div></div><!-- @@@capturedImagePath -->
<br/>
<!-- $$$errorString -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="errorString-prop"><td class="tblQmlPropNode"><p><a name="errorString-prop"></a><span class="name">errorString</span> : <span class="type">string</span></p></td></tr></table></div></div><div class="qmldoc"><p>This property holds the error message related to the last capture.</p>
</div></div><!-- @@@errorString -->
<br/>
<!-- $$$ready -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="ready-prop"><td class="tblQmlPropNode"><p><a name="ready-prop"></a><span class="name">ready</span> : <span class="type">bool</span></p></td></tr></table></div></div><div class="qmldoc"><p>This property holds a bool value indicating whether the camera is ready to capture photos or not.</p>
<p>Calling <a href="qml-qtmultimedia-cameracapture.html#capture-method">capture()</a> while <i>ready</i> is <code>false</code> is not permitted and results in an error.</p>
</div></div><!-- @@@ready -->
<br/>
<!-- $$$resolution -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="resolution-prop"><td class="tblQmlPropNode"><p><a name="resolution-prop"></a><span class="name">resolution</span> : <span class="type">size</span></p></td></tr></table></div></div><div class="qmldoc"><p>This property holds the resolution/size of the image to be captured. If empty, the system chooses the appropriate resolution.</p>
</div></div><!-- @@@resolution -->
<br/>
<h2>Signal Documentation</h2>
<!-- $$$captureFailed -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="captureFailed-signal"><td class="tblQmlFuncNode"><p><a name="captureFailed-signal"></a><span class="name">captureFailed</span>(<span class="type">requestId</span>, <span class="type">message</span>)</p></td></tr></table></div></div><div class="qmldoc"><p>This signal is emitted when an error occurs during capture with <i>requestId</i>. A descriptive message is available in <i>message</i>.</p>
<p>The corresponding handler is <code>onCaptureFailed</code>.</p>
</div></div><!-- @@@captureFailed -->
<br/>
<!-- $$$imageCaptured -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="imageCaptured-signal"><td class="tblQmlFuncNode"><p><a name="imageCaptured-signal"></a><span class="name">imageCaptured</span>(<span class="type">requestId</span>, <span class="type">preview</span>)</p></td></tr></table></div></div><div class="qmldoc"><p>This signal is emitted when an image with <i>requestId</i> has been captured but not yet saved to the filesystem. The <i>preview</i> parameter can be used as the URL supplied to an Image.</p>
<p>The corresponding handler is <code>onImageCaptured</code>.</p>
<p><b>See also </b><a href="qml-qtmultimedia-cameracapture.html#imageSaved-signal">imageSaved</a>.</p>
</div></div><!-- @@@imageCaptured -->
<br/>
<!-- $$$imageMetadataAvailable -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="imageMetadataAvailable-signal"><td class="tblQmlFuncNode"><p><a name="imageMetadataAvailable-signal"></a><span class="name">imageMetadataAvailable</span>(<span class="type">requestId</span>, <span class="type">key</span>, <span class="type">value</span>)</p></td></tr></table></div></div><div class="qmldoc"><p>This signal is emitted when the image with <i>requestId</i> has new metadata available with the key <i>key</i> and value <i>value</i>.</p>
<p>The corresponding handler is <code>onImageMetadataAvailable</code>.</p>
<p><b>See also </b><a href="qml-qtmultimedia-cameracapture.html#imageCaptured-signal">imageCaptured</a>.</p>
</div></div><!-- @@@imageMetadataAvailable -->
<br/>
<!-- $$$imageSaved -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="imageSaved-signal"><td class="tblQmlFuncNode"><p><a name="imageSaved-signal"></a><span class="name">imageSaved</span>(<span class="type">requestId</span>, <span class="type">path</span>)</p></td></tr></table></div></div><div class="qmldoc"><p>This signal is emitted after the image with <i>requestId</i> has been written to the filesystem. The <i>path</i> is a local file path, not a URL.</p>
<p>The corresponding handler is <code>onImageSaved</code>.</p>
<p><b>See also </b><a href="qml-qtmultimedia-cameracapture.html#imageCaptured-signal">imageCaptured</a>.</p>
</div></div><!-- @@@imageSaved -->
<br/>
<h2>Method Documentation</h2>
<!-- $$$cancelCapture -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="cancelCapture-method"><td class="tblQmlFuncNode"><p><a name="cancelCapture-method"></a><span class="name">cancelCapture</span>()</p></td></tr></table></div></div><div class="qmldoc"><p>Cancel pending image capture requests.</p>
</div></div><!-- @@@cancelCapture -->
<br/>
<!-- $$$capture -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="capture-method"><td class="tblQmlFuncNode"><p><a name="capture-method"></a><span class="name">capture</span>()</p></td></tr></table></div></div><div class="qmldoc"><p>Start image capture. The <a href="qml-qtmultimedia-cameracapture.html#imageCaptured-signal">imageCaptured</a> and <a href="qml-qtmultimedia-cameracapture.html#imageSaved-signal">imageSaved</a> signals will be emitted when the capture is complete.</p>
<p>The image will be captured to the default system location, typically <a href="../qtcore/qstandardpaths.html#writableLocation">QStandardPaths::writableLocation</a>(<a href="../qtcore/qstandardpaths.html#StandardLocation-enum">QStandardPaths::PicturesLocation</a>) for still imaged or <a href="../qtcore/qstandardpaths.html#writableLocation">QStandardPaths::writableLocation</a>(<a href="../qtcore/qstandardpaths.html#StandardLocation-enum">QStandardPaths::MoviesLocation</a>) for video.</p>
<p>Camera saves all the capture parameters like exposure settings or image processing parameters, so changes to camera parameters after capture() is called do not affect previous capture requests.</p>
<p>capture() returns the capture requestId parameter, used with imageExposed(), imageCaptured(), imageMetadataAvailable() and imageSaved() signals.</p>
<p><b>See also </b><a href="qml-qtmultimedia-cameracapture.html#ready-prop">ready</a>.</p>
</div></div><!-- @@@capture -->
<br/>
<!-- $$$captureToLocation -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="captureToLocation-method"><td class="tblQmlFuncNode"><p><a name="captureToLocation-method"></a><span class="name">captureToLocation</span>(<span class="type">location</span>)</p></td></tr></table></div></div><div class="qmldoc"><p>Start image capture to specified <i>location</i>. The <a href="qml-qtmultimedia-cameracapture.html#imageCaptured-signal">imageCaptured</a> and <a href="qml-qtmultimedia-cameracapture.html#imageSaved-signal">imageSaved</a> signals will be emitted when the capture is complete.</p>
<p>CameraCapture::captureToLocation returns the capture requestId parameter, used with imageExposed(), imageCaptured(), imageMetadataAvailable() and imageSaved() signals.</p>
<p>If the application is unable to write to the location specified by <code>location</code> the <a href="qml-qtmultimedia-cameracapture.html">CameraCapture</a> will emit an error. The most likely reasons for the application to be unable to write to a location is that the path is wrong and the location does not exists, or the application does not have write permission for that location.</p>
</div></div><!-- @@@captureToLocation -->
<br/>
<!-- $$$setMetadata -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="setMetadata-method"><td class="tblQmlFuncNode"><p><a name="setMetadata-method"></a><span class="name">setMetadata</span>(<span class="type">key</span>, <span class="type">value</span>)</p></td></tr></table></div></div><div class="qmldoc"><p>Sets a particular metadata <i>key</i> to <i>value</i> for the subsequent image captures.</p>
<p><b>See also </b><a href="qmediametadata.html">QMediaMetaData</a>.</p>
</div></div><!-- @@@setMetadata -->
<br/>
</div>
</div>
</div>
</div>
</div>
<div class="footer">
<p>
<acronym title="Copyright">©</acronym> 2015 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>
|