119 lines
4.2 KiB
Objective-C
119 lines
4.2 KiB
Objective-C
//
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// ScanIdentityBarcodeViewController.m
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// Signal-iOS
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//
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// Created by Christine Corbett Moran on 3/29/14.
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// Copyright (c) 2014 Open Whisper Systems. All rights reserved.
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//
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#import "ScanIdentityBarcodeViewController.h"
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#import "NSData+Base64.h"
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#import "NSData+hexString.h"
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#import "UIColor+OWS.h"
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@implementation ScanIdentityBarcodeViewController
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- (void)viewDidLoad {
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[super viewDidLoad];
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self.title = NSLocalizedString(@"SCAN_KEY", @"");
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self.highlightView = [[UIView alloc] init];
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self.highlightView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin|UIViewAutoresizingFlexibleBottomMargin;
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self.highlightView.layer.borderColor = [UIColor ows_greenColor].CGColor;
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self.highlightView.layer.borderWidth = 4;
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[self.view addSubview:self.highlightView];
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self.session = [[AVCaptureSession alloc] init];
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self.device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
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NSError *error = nil;
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self.input = [AVCaptureDeviceInput deviceInputWithDevice:self.device error:&error];
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if (self.input) {
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[self.session addInput:self.input];
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} else {
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DDLogCDebug(@"Error: %@", error);
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}
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self.output = [[AVCaptureMetadataOutput alloc] init];
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[self.output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
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[self.session addOutput:self.output];
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self.output.metadataObjectTypes = [self.output availableMetadataObjectTypes];
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self.prevLayer = [AVCaptureVideoPreviewLayer layerWithSession:self.session];
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self.prevLayer.frame = self.view.bounds;
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self.prevLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
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[self.view.layer addSublayer:self.prevLayer];
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[self.session startRunning];
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[self.view bringSubviewToFront:self.highlightView];
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}
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- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection {
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CGRect highlightViewRect = CGRectZero;
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AVMetadataMachineReadableCodeObject *barCodeObject;
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NSString *detectionString = nil;
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NSArray *barCodeTypes = @[AVMetadataObjectTypeQRCode];
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for (AVMetadataObject *metadata in metadataObjects) {
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for (NSString *type in barCodeTypes) {
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if ([metadata.type isEqualToString:type]) {
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barCodeObject = (AVMetadataMachineReadableCodeObject *)[self.prevLayer transformedMetadataObjectForMetadataObject:(AVMetadataMachineReadableCodeObject *)metadata];
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highlightViewRect = barCodeObject.bounds;
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detectionString = [(AVMetadataMachineReadableCodeObject *)metadata stringValue];
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break;
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}
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}
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if (detectionString != nil) {
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NSData* detectionData = [NSData dataFromBase64String:detectionString];
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NSString *dialogTitle;
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NSString *dialogDescription;
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if([detectionData isEqualToData:self.identityKey]) {
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dialogTitle = NSLocalizedString(@"SCAN_KEY_VERIFIED_TITLE", @"");
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dialogDescription = NSLocalizedString(@"SCAN_KEY_VERIFIED_TEXT", @"");
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}
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else {
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dialogTitle = NSLocalizedString(@"SCAN_KEY_CONFLICT_TITLE", @"");
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dialogDescription = NSLocalizedString(@"SCAN_KEY_CONFLICT_TEXT", @"");
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}
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[self.session stopRunning];
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UIAlertController *controller = [UIAlertController alertControllerWithTitle:dialogTitle message:dialogDescription preferredStyle:UIAlertControllerStyleAlert];
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[self presentViewController:controller animated:YES completion:^{
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[self performSelector:@selector(dismissScannerAfterSuccesfullScan) withObject:nil afterDelay:5];
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}];
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break;
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}
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}
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self.highlightView.frame = highlightViewRect;
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}
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#pragma mark - Action
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- (void)dismissScannerAfterSuccesfullScan {
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[self dismissViewControllerAnimated:YES completion:^{
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[self closeButtonAction:nil];
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}];
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}
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- (IBAction)closeButtonAction:(id)sender
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{
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[self performSegueWithIdentifier:@"UnwindToIdentityKeyWasVerifiedSegue" sender:self];
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}
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@end
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