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camera.ios.ts
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110 lines (95 loc) · 4.79 KB
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import imageSource = require("image-source");
import frame = require("ui/frame");
import definition = require("camera");
import common = require("./camera-common");
import types = require("utils/types");
class UIImagePickerControllerDelegateImpl extends NSObject implements UIImagePickerControllerDelegate {
public static ObjCProtocols = [UIImagePickerControllerDelegate];
static new(): UIImagePickerControllerDelegateImpl {
return <UIImagePickerControllerDelegateImpl>super.new();
}
private _callback: (result?: imageSource.ImageSource) => void;
private _width: number;
private _height: number;
private _keepAspectRatio: boolean;
public initWithCallback(callback: (result?: imageSource.ImageSource) => void): UIImagePickerControllerDelegateImpl {
this._callback = callback;
return this;
}
public initWithCallbackAndOptions(callback: (result?: imageSource.ImageSource) => void, options?): UIImagePickerControllerDelegateImpl {
this._callback = callback;
if (options) {
this._width = options.width;
this._height = options.height;
this._keepAspectRatio = types.isNullOrUndefined(options.keepAspectRatio) ? true : options.keepAspectRatio;
}
return this;
}
imagePickerControllerDidFinishPickingMediaWithInfo(picker, info): void {
if (info) {
var source = info.valueForKey(UIImagePickerControllerOriginalImage);
if (source) {
var image = null;
if (this._width || this._height) {
var newSize = null;
if (this._keepAspectRatio) {
var aspectSafeSize = common.getAspectSafeDimensions(source.size.width, source.size.height, this._width, this._height);
newSize = CGSizeMake(aspectSafeSize.width, aspectSafeSize.height);
}
else {
newSize = CGSizeMake(this._width, this._height);
}
UIGraphicsBeginImageContextWithOptions(newSize, false, 0.0);
source.drawInRect(CGRectMake(0, 0, newSize.width, newSize.height));
image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
var imageSourceResult = image ? imageSource.fromNativeSource(image) : imageSource.fromNativeSource(source);
if (this._callback) {
this._callback(imageSourceResult);
}
}
}
picker.presentingViewController.dismissViewControllerAnimatedCompletion(true, null);
listener = null;
}
imagePickerControllerDidCancel(picker): void {
picker.presentingViewController.dismissViewControllerAnimatedCompletion(true, null);
listener = null;
}
}
var listener;
export var takePicture = function (options?: definition.CameraOptions): Promise<imageSource.ImageSource> {
return new Promise<imageSource.ImageSource>((resolve, reject) => {
listener = null;
var imagePickerController = new UIImagePickerController();
var reqWidth = 0;
var reqHeight = 0;
var keepAspectRatio = true;
if (options) {
reqWidth = options.width || 0;
reqHeight = options.height || reqWidth;
keepAspectRatio = types.isNullOrUndefined(options.keepAspectRatio) ? true : options.keepAspectRatio;
}
if (reqWidth && reqHeight) {
listener = UIImagePickerControllerDelegateImpl.new().initWithCallbackAndOptions(resolve, { width: reqWidth, height: reqHeight, keepAspectRatio: keepAspectRatio });
}
else {
listener = UIImagePickerControllerDelegateImpl.new().initWithCallback(resolve);
}
imagePickerController.delegate = listener;
if (UIDevice.currentDevice().model !== "iPhone Simulator") {
// UIImagePickerControllerSourceType.UIImagePickerControllerSourceTypeCamera is not available in emulators!
imagePickerController.mediaTypes = UIImagePickerController.availableMediaTypesForSourceType(UIImagePickerControllerSourceType.UIImagePickerControllerSourceTypeCamera);
imagePickerController.sourceType = UIImagePickerControllerSourceType.UIImagePickerControllerSourceTypeCamera;
}
imagePickerController.modalPresentationStyle = UIModalPresentationStyle.UIModalPresentationCurrentContext;
var topMostFrame = frame.topmost();
if (topMostFrame) {
var viewController: UIViewController = topMostFrame.currentPage && topMostFrame.currentPage.ios;
if (viewController) {
viewController.presentViewControllerAnimatedCompletion(imagePickerController, true, null);
}
}
});
}