code refactor

2020-02-25 14:20:27 +08:00
parent 23b0f93e89
commit 3facc3fdee
12 changed files with 147 additions and 41 deletions
--- a/doric-iOS/Devkit/Classes/QRScanViewController.m
+++ b/doric-iOS/Devkit/Classes/QRScanViewController.m
@@ -0,0 +1,111 @@
+/*
+ * Copyright [2019] [Doric.Pub]
+ *
+ * Licensed 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.
+ */
+//
+//  QRScanViewController.m
+//  Doric
+//
+//  Created by jingpeng.wang on 2020/2/25.
+//
+
+#import "QRScanViewController.h"
+#import <AVFoundation/AVFoundation.h>
+#import <DoricCore/Doric.h>
+#import <DoricDevkit/DoricDev.h>
+
+@interface QRScanViewController () <AVCaptureMetadataOutputObjectsDelegate>
+@property(strong, nonatomic) AVCaptureDevice *device;
+@property(strong, nonatomic) AVCaptureDeviceInput *input;
+@property(strong, nonatomic) AVCaptureMetadataOutput *output;
+@property(strong, nonatomic) AVCaptureSession *session;
+@property(strong, nonatomic) AVCaptureVideoPreviewLayer *previewLayer;
+@property(strong, nonatomic) UIPinchGestureRecognizer *pinchGes;
+@property(assign, nonatomic) CGFloat scanRegion_W;
+@property(assign, nonatomic) CGFloat initScale;
+@end
+
+@implementation QRScanViewController
+- (void)viewDidLoad {
+    [super viewDidLoad];
+    self.title = @"扫一扫";
+    [self configBasicDevice];
+    [self configPinchGes];
+    [self.session startRunning];
+}
+
+- (void)configBasicDevice {
+    self.device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
+    self.input = [[AVCaptureDeviceInput alloc] initWithDevice:self.device error:nil];
+    self.output = [[AVCaptureMetadataOutput alloc] init];
+    [self.output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
+    self.session = [[AVCaptureSession alloc] init];
+    [self.session setSessionPreset:AVCaptureSessionPresetHigh];
+    if ([self.session canAddInput:self.input]) {
+        [self.session addInput:self.input];
+    }
+    if ([self.session canAddOutput:self.output]) {
+        [self.session addOutput:self.output];
+    }
+    [self.output setMetadataObjectTypes:@[AVMetadataObjectTypeQRCode]];
+    [self.output setRectOfInterest:CGRectMake(0, 0, 1, 1)];
+    self.previewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:self.session];
+    self.previewLayer.frame = CGRectMake(0, 0, self.view.width, self.view.height);
+    self.previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
+    [self.view.layer addSublayer:self.previewLayer];
+}
+
+- (void)configPinchGes {
+    self.pinchGes = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchDetected:)];
+    [self.view addGestureRecognizer:self.pinchGes];
+}
+
+- (void)pinchDetected:(UIPinchGestureRecognizer *)recogniser {
+    if (!_device) {
+        return;
+    }
+    if (recogniser.state == UIGestureRecognizerStateBegan) {
+        _initScale = _device.videoZoomFactor;
+    }
+    NSError *error = nil;
+    [_device lockForConfiguration:&error];
+    if (!error) {
+        CGFloat zoomFactor;
+        CGFloat scale = recogniser.scale;
+        if (scale < 1.0f) {
+            zoomFactor = self.initScale - pow(self.device.activeFormat.videoMaxZoomFactor, 1.0f - recogniser.scale);
+        } else {
+            zoomFactor = self.initScale + pow(self.device.activeFormat.videoMaxZoomFactor, (recogniser.scale - 1.0f) / 2.0f);
+        }
+        zoomFactor = MIN(15.0f, zoomFactor);
+        zoomFactor = MAX(1.0f, zoomFactor);
+        _device.videoZoomFactor = zoomFactor;
+        [_device unlockForConfiguration];
+    }
+}
+
+#pragma mark - AVCaptureMetadataOutputObjectsDelegate
+
+- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection {
+    [self.session stopRunning];
+    if ([metadataObjects count] >= 1) {
+        AVMetadataMachineReadableCodeObject *qrObject = [metadataObjects lastObject];
+        NSString *result = qrObject.stringValue;
+        NSLog(@"Scan result is %@", result);
+        [[DoricDev instance] connectDevKit:[NSString stringWithFormat:@"ws://%@:7777", result]];
+        ShowToast([NSString stringWithFormat:@"Connected to %@", result], BOTTOM);
+        [self.navigationController popViewControllerAnimated:NO];
+    }
+}
+@end