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index.zulzul<?script src="myWebcam.js"?>
<?component name="mywebcam-macro" macroURI="myWebcam.zul"?>
<?component name="mywebcam" extends="div" widgetClass="MyWebcam"?>
<zk xmlns:n="native" xmlns:w="client">
<window title="ZK Webcam Demo" mode="overlapped" border="normal">
<!-- usage as macro and forward event -->
<mywebcam-macro onCaptureImage="System.out.println(event.getOrigin().getData())"/> <!-- this is a server side listener -->
<!-- direct usage without macro allows custom layout inside the div -->
<div w:use="MyWebcam" style="border: 1px solid blue; display: inline-block;"
onCaptureImage="System.out.println(event.getData())"> <!-- this is a server side listener -->
<vlayout>
<n:video autoplay="true" width="320" height="240" style="vertical-align: middle;"/>
<button label="Snap"/>
<n:canvas width="120" height="90"/>
</vlayout>
</div>
</window>
</zk>myWebcam.jsjavascriptzk.afterLoad('zul.wgt', function() {
window.URL = window.URL || window.webkitURL;
navigator.getUserMedia =
navigator.getUserMedia || navigator.webkitGetUserMedia ||
navigator.mozGetUserMedia || navigator.msGetUserMedia ||
navigator.oGetUserMedia || navigator.mediaDevices.getUserMedia;
MyWebcam = zk.$extends(zul.wgt.Div, {
bind_: function() {
this.$supers('bind_', arguments);
var widget = this;
var video = this.$n().querySelector('video');
var canvas = this.$n().querySelector('canvas');
var context = canvas.getContext("2d")
this.snapButton = $(this).find('button').zk.$();
this.capture = function() {
context.drawImage(video, 0, 0, canvas.width, canvas.height);
widget.fire('onCaptureImage', canvas.toDataURL(), {toServer: true});
};
this.snapButton.listen({ onClick: this.capture });
navigator.getUserMedia( { video : true },
function(stream) { video.srcObject = stream; },
function(e) { console.error('An error :', e); }
);
},
unbind_: function() {
this.snapButton.unlisten({ onClick: this.capture });
this.$supers('unbind_', arguments);
}
});//zk.extends
});//zk.afterLoad
myWebcam.zulzul<zk>
<div xmlns:n="native" xmlns:w="client" w:use="MyWebcam"
style="border: 1px solid blue; display: inline-block;"
forward="onCaptureImage=onCaptureImage(${event.data})">
<n:video autoplay="true" width="320" height="240" style="vertical-align: middle;"/>
<button label="Snap"/>
<n:canvas width="120" height="90"/>
</div>
</zk>