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CB-10414: Adding focus handler to resume video when user comes back on leaving the app while preview was running

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This commit is contained in:
Raghav Katyal 2016-03-02 14:15:01 -08:00
parent 56b9469313
commit 9c906b2ab7
1 changed files with 13 additions and 0 deletions
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13
src/windows/CameraProxy.js
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@ -351,12 +351,22 @@ function takePictureFromCameraWP(successCallback, errorCallback, args) {
captureSettings.streamingCaptureMode = CaptureNS.StreamingCaptureMode.video; captureSettings.streamingCaptureMode = CaptureNS.StreamingCaptureMode.video;
} }
function continueVideoOnFocus() {
// if preview is defined it would be stuck, play it
if (capturePreview) {
capturePreview.play();
}
}
function startCameraPreview() { function startCameraPreview() {
// Search for available camera devices // Search for available camera devices
// This is necessary to detect which camera (front or back) we should use // This is necessary to detect which camera (front or back) we should use
var DeviceEnum = Windows.Devices.Enumeration; var DeviceEnum = Windows.Devices.Enumeration;
var expectedPanel = cameraDirection === 1 ? DeviceEnum.Panel.front : DeviceEnum.Panel.back; var expectedPanel = cameraDirection === 1 ? DeviceEnum.Panel.front : DeviceEnum.Panel.back;
// Add focus event handler to capture the event when user suspends the app and comes back while the preview is on
window.addEventListener("focus", continueVideoOnFocus);
DeviceEnum.DeviceInformation.findAllAsync(DeviceEnum.DeviceClass.videoCapture).then(function (devices) { DeviceEnum.DeviceInformation.findAllAsync(DeviceEnum.DeviceClass.videoCapture).then(function (devices) {
if (devices.length <= 0) { if (devices.length <= 0) {
destroyCameraPreview(); destroyCameraPreview();
@ -459,6 +469,9 @@ function takePictureFromCameraWP(successCallback, errorCallback, args) {
cameraCaptureButton.removeEventListener('click', onCameraCaptureButtonClick); cameraCaptureButton.removeEventListener('click', onCameraCaptureButtonClick);
cameraCancelButton.removeEventListener('click', onCameraCancelButtonClick); cameraCancelButton.removeEventListener('click', onCameraCancelButtonClick);
// Remove the focus event handler
window.removeEventListener("focus", continueVideoOnFocus);
// Remove elements // Remove elements
[capturePreview, cameraCaptureButton, cameraCancelButton].forEach(function (elem) { [capturePreview, cameraCaptureButton, cameraCancelButton].forEach(function (elem) {
if (elem /* && elem in document.body.childNodes */) { if (elem /* && elem in document.body.childNodes */) {