/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
/* globals qnx, FileError, PluginResult */
var PictureSourceType = {
PHOTOLIBRARY : 0, // Choose image from picture library (same as SAVEDPHOTOALBUM for Android)
CAMERA : 1, // Take picture from camera
SAVEDPHOTOALBUM : 2 // Choose image from picture library (same as PHOTOLIBRARY for Android)
},
DestinationType = {
DATA_URL: 0, // Return base64 encoded string
FILE_URI: 1, // Return file uri (content://media/external/images/media/2 for Android)
NATIVE_URI: 2 // Return native uri (eg. asset-library://... for iOS)
},
savePath = window.qnx.webplatform.getApplication().getEnv("HOME").replace('/data', '') + '/shared/camera/',
invokeAvailable = true;
//check for camera card - it isn't currently availble in work perimeter
window.qnx.webplatform.getApplication().invocation.queryTargets(
{
type: 'image/jpeg',
action: 'bb.action.CAPTURE',
target_type: 'CARD'
},
function (error, targets) {
invokeAvailable = !error && targets && targets instanceof Array &&
targets.filter(function (t) { return t.default === 'sys.camera.card'; }).length > 0;
}
);
//open a webview with getUserMedia camera card implementation when camera card not available
function showCameraDialog (done, cancel, fail) {
var wv = qnx.webplatform.createWebView(function () {
wv.url = 'local:///chrome/camera.html';
wv.allowQnxObject = true;
wv.allowRpc = true;
wv.zOrder = 1;
wv.setGeometry(0, 0, screen.width, screen.height);
wv.backgroundColor = 0x00000000;
wv.active = true;
wv.visible = true;
wv.on('UserMediaRequest', function (evt, args) {
wv.allowUserMedia(JSON.parse(args).id, 'CAMERA_UNIT_REAR');
});
wv.on('JavaScriptCallback', function (evt, data) {
var args = JSON.parse(data).args;
if (args[0] === 'cordova-plugin-camera') {
if (args[1] === 'cancel') {
cancel('User canceled');
} else if (args[1] === 'error') {
fail(args[2]);
} else {
saveImage(args[1], done, fail);
}
wv.un('JavaScriptCallback', arguments.callee);
wv.visible = false;
wv.destroy();
qnx.webplatform.getApplication().unlockRotation();
}
});
wv.on('Destroyed', function () {
wv.delete();
});
qnx.webplatform.getApplication().lockRotation();
qnx.webplatform.getController().dispatchEvent('webview.initialized', [wv]);
});
}
//create unique name for saved file (same pattern as BB10 camera app)
function imgName() {
var date = new Date(),
pad = function (n) { return n < 10 ? '0' + n : n; };
return 'IMG_' + date.getFullYear() + pad(date.getMonth() + 1) + pad(date.getDate()) + '_' +
pad(date.getHours()) + pad(date.getMinutes()) + pad(date.getSeconds()) + '.png';
}
//convert dataURI to Blob
function dataURItoBlob(dataURI) {
var byteString = atob(dataURI.split(',')[1]),
mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0],
arrayBuffer = new ArrayBuffer(byteString.length),
ia = new Uint8Array(arrayBuffer),
i;
for (i = 0; i < byteString.length; i++) {
ia[i] = byteString.charCodeAt(i);
}
return new Blob([new DataView(arrayBuffer)], { type: mimeString });
}
//save dataURI to file system and call success with path
function saveImage(data, success, fail) {
var name = savePath + imgName();
require('lib/webview').setSandbox(false);
window.webkitRequestFileSystem(window.PERSISTENT, 0, function (fs) {
fs.root.getFile(name, { create: true }, function (entry) {
entry.createWriter(function (writer) {
writer.onwriteend = function () {
success(name);
};
writer.onerror = fail;
writer.write(dataURItoBlob(data));
});
}, fail);
}, fail);
}
function encodeBase64(filePath, callback) {
var sandbox = window.qnx.webplatform.getController().setFileSystemSandbox, // save original sandbox value
errorHandler = function (err) {
var msg = "An error occured: ";
switch (err.code) {
case FileError.NOT_FOUND_ERR:
msg += "File or directory not found";
break;
case FileError.NOT_READABLE_ERR:
msg += "File or directory not readable";
break;
case FileError.PATH_EXISTS_ERR:
msg += "File or directory already exists";
break;
case FileError.TYPE_MISMATCH_ERR:
msg += "Invalid file type";
break;
default:
msg += "Unknown Error";
break;
}
// set it back to original value
window.qnx.webplatform.getController().setFileSystemSandbox = sandbox;
callback(msg);
},
gotFile = function (fileEntry) {
fileEntry.file(function (file) {
var reader = new FileReader();
reader.onloadend = function (e) {
// set it back to original value
window.qnx.webplatform.getController().setFileSystemSandbox = sandbox;
callback(this.result);
};
reader.readAsDataURL(file);
}, errorHandler);
},
onInitFs = function (fs) {
window.qnx.webplatform.getController().setFileSystemSandbox = false;
fs.root.getFile(filePath, {create: false}, gotFile, errorHandler);
};
window.webkitRequestFileSystem(window.TEMPORARY, 10 * 1024 * 1024, onInitFs, errorHandler); // set size to 10MB max
}
module.exports = {
takePicture: function (success, fail, args, env) {
var destinationType = JSON.parse(decodeURIComponent(args[1])),
sourceType = JSON.parse(decodeURIComponent(args[2])),
result = new PluginResult(args, env),
done = function (data) {
if (destinationType === DestinationType.FILE_URI) {
data = "file://" + data;
result.callbackOk(data, false);
} else {
encodeBase64(data, function (data) {
if (/^data:/.test(data)) {
data = data.slice(data.indexOf(",") + 1);
result.callbackOk(data, false);
} else {
result.callbackError(data, false);
}
});
}
},
cancel = function (reason) {
result.callbackError(reason, false);
},
invoked = function (error) {
if (error) {
result.callbackError(error, false);
}
};
switch(sourceType) {
case PictureSourceType.CAMERA:
if (invokeAvailable) {
window.qnx.webplatform.getApplication().cards.camera.open("photo", done, cancel, invoked);
} else {
showCameraDialog(done, cancel, fail);
}
break;
case PictureSourceType.PHOTOLIBRARY:
case PictureSourceType.SAVEDPHOTOALBUM:
window.qnx.webplatform.getApplication().cards.filePicker.open({
mode: "Picker",
type: ["picture"]
}, done, cancel, invoked);
break;
}
result.noResult(true);
}
};